Arduino ESP32-CAM 学习之旅③ 简单剖析官方案例源码,揭开ESP32-CAM神秘面纱

2021/5/24 22:55:17

本文主要是介绍Arduino ESP32-CAM 学习之旅③ 简单剖析官方案例源码,揭开ESP32-CAM神秘面纱,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!

博主联系方式汇总(非诚勿扰)

  • Arduino ESP32-CAM 学习之旅① 认识ESP32-CAM,搭建环境,运行第一个程序
  • Arduino ESP32-CAM 学习之旅② ESP32-CAM开发板

文章目录

    • 1.前言
      • 1.1 OpenMv
    • 2. 源码学习
      • 2.1 源码位置
      • 2.2 源码结构
        • 2.2.1 camera_index.h —— web页面Gzip源码
        • 2.2.2 camera_pins.h —— 摄像头引脚映射关系
        • 2.2.3 CameraWebServer.ino —— Arduino代码
        • 2.2.4 app_httpd.cpp —— 整个http Server 和 Image Stream Server 处理过程(核心代码)
      • 2.3 源码剖析① —— CameraWebServer
        • 2.3.1 第一步,解读 esp_camera 关键代码
          • 2.3.1.1 esp_camera_init —— 初始化摄像头驱动
          • 2.3.1.2 esp_camera_deinit —— 重新初始化摄像头驱动
          • 2.3.1.3 esp_camera_fb_get—— 获取摄像头帧数据,创建帧数组返回
          • 2.3.1.4 esp_camera_fb_return —— 获取摄像头帧数据,复用帧数组
          • 2.3.1.5 esp_camera_sensor_get—— 获取摄像头传感器,一般需要对传感器做一些配置
        • 2.3.2 第二步,解读 Setup 和 loop
        • 2.3.3 第三步,解读 app_httpd(startCameraServer)
          • 2.3.3.1 index_handler —— 处理 http://{ip}:{port}
          • 2.3.3.2 status_handler —— 处理 http://{ip}:{port}/status
          • 2.3.3.3 cmd_handler —— 处理 http://{ip}:{port}/capture
          • 2.3.3.4 capture_handler —— 处理 http://{ip}:{port}/capture,拍照
          • 2.3.3.5 stream_handler —— 处理 http://{ip}:{port}/stream,图片视频流

授人以鱼不如授人以渔,目的不是为了教会你具体项目开发,而是学会学习的能力。希望大家分享给你周边需要的朋友或者同学,说不定大神成长之路有博哥的奠基石。。。
共同学习成长QQ群 ESP8266物联网开发① 622368884,不喜勿加,里面有一大群志同道合的探路人

1.前言

在 Arduino ESP32-CAM 学习之旅① 认识ESP32-CAM,搭建环境,运行第一个程序 中,我们仅仅是运行了一个官方例程,但是对于好学的我们来说,还是想慢慢拆解整个代码模块,拆解成我们可以理解的各个部分。所以,这一篇,请跟着博主去揭开ESP32-CAM的神秘面纱。
在这里插入图片描述
官方案例的操作步骤:

  • 下载案例到ESP32-CAM,主要烧写注意事项
  • 在电脑浏览器上输入串口监视器打印出来的IP地址就会出现如下页面。

在这里插入图片描述
这里有一系列的选项可以选择,点击Start Stream按钮就会出现以下画面(放心,这个人不是博主):
在这里插入图片描述

1.1 OpenMv

首先,在我们这里,ESP32-CAM其实就是OpenMv的应用(当然博主也是不断学习才了解到的)。
这里贴一些觉得不错的参考资料:

  • https://book.openmv.cc/
  • https://docs.singtown.com/micropython/zh/latest/openmvcam/library/omv.sensor.html

2. 源码学习

2.1 源码位置

如果你是下载了ESP32源码,可以找到这个目录。
在这里插入图片描述

或者直接去到github查阅:
https://gitee.com/mirrors/arduino-esp32/tree/master/libraries/ESP32/examples/Camera/CameraWebServer

在这里插入图片描述

2.2 源码结构

官方案例中,源码围绕着4个文件:

  • CameraWebServer.ino
  • app_httpd.cpp —— 整个http Server 和 Image Stream Server 处理过程
  • camera_index.h —— web页面Gzip源码
  • camera_pins.h —— 摄像头引脚映射关系

2.2.1 camera_index.h —— web页面Gzip源码

//File: index_ov2640.html.gz, Size: 4316
#define index_ov2640_html_gz_len 4316
const uint8_t index_ov2640_html_gz[] = {
 0x1F, 0x8B, 0x08, 0x08, 0x50, 0x5C, 0xAE, 0x5C, 0x00, 0x03, 0x69, 0x6E, 0x64, 0x65, 0x78, 0x5F,
 0x6F, 0x76, 0x32, 0x36, 0x34, 0x30, 0x2E, 0x68, 0x74, 0x6D, 0x6C, 0x00, 0xE5, 0x5D, 0x7B, 0x73,
 0xD3, 0xC6, 0x16, 0xFF, 0x9F, 0x4F, 0x21, 0x04, 0x25, 0xF6, 0x34, 0x76, 0x6C, 0xC7, 0x84, 0xE0,
 0xDA, 0xE2, 0x42, 0x08, 0xD0, 0x19, 0x5E, 0x25, 0x2D, 0x74, 0xA6, 0xD3, 0x81, 0xB5, 0xB4, 0xB2,
 0x55, 0x64, 0xC9, 0x95, 0x56, 0x76, 0x52, 0x26, 0x9F, 0xE3, 0x7E, 0xA0, 0xFB, 0xC5, 0xEE, 0xD9,
 0x87, 0xA4, 0x95, 0xBC, 0x7A, 0xD8, 0x26, 0x36, 0x97, 0xEB, 0xCC, 0x14, 0xD9, 0xDA, 0x73, 0xF6,
 0x9C, 0xF3, 0x3B, 0xAF, 0x5D, 0x3D, 0x3A, 0xBC, 0x6D, 0xF9, 0x26, 0xB9, 0x9A, 0x63, 0x6D, 0x4A,
 0x66, 0xAE, 0x71, 0x6B, 0xC8, 0xFF, 0xD1, 0xE0, 0x33, 0x9C, 0x62, 0x64, 0xF1, 0x43, 0xF6, 0x75,
 0x86, 0x09, 0xD2, 0xCC, 0x29, 0x0A, 0x42, 0x4C, 0x46, 0x7A, 0x44, 0xEC, 0xD6, 0xA9, 0x9E, 0x3F,
 0xED, 0xA1, 0x19, 0x1E, 0xE9, 0x0B, 0x07, 0x2F, 0xE7, 0x7E, 0x40, 0x74, 0xCD, 0xF4, 0x3D, 0x82,
 0x3D, 0x18, 0xBE, 0x74, 0x2C, 0x32, 0x1D, 0x59, 0x78, 0xE1, 0x98, 0xB8, 0xC5, 0xBE, 0x1C, 0x3A,
 0x9E, 0x43, 0x1C, 0xE4, 0xB6, 0x42, 0x13, 0xB9, 0x78, 0xD4, 0x95, 0x79, 0x11, 0x87, 0xB8, 0xD8,
 0x38, 0xBF, 0x78, 0x7B, 0xDC, 0xD3, 0xDE, 0xBC, 0xEF, 0xF5, 0x4F, 0x3A, 0xC3, 0x23, 0xFE, 0x5B,
 0x3A, 0x26, 0x24, 0x57, 0xF2, 0x77, 0xFA, 0x19, 0xFB, 0xD6, 0x95, 0xF6, 0x25, 0xF3, 0x13, 0xFD,
 0xD8, 0x20, 0x44, 0xCB, 0x46, 0x33, 0xC7, 0xBD, 0x1A, 0x68, 0x8F, 0x03, 0x98, 0xF3, 0xF0, 0x05,
 0x76, 0x17, 0x98, 0x38, 0x26, 0x3A, 0x0C, 0x91, 0x17, 0xB6, 0x42, 0x1C, 0x38, 0xF6, 0x4F, 0x2B,
 0x84, 0x63, 0x64, 0x7E, 0x9E, 0x04, 0x7E, 0xE4, 0x59, 0x03, 0xED, 0x4E, 0xF7, 0x94, 0xFE, 0xAD,
 0x0E, 0x32, 0x7D, 0xD7, 0x0F, 0xE0, 0xFC, 0xF9, 0x33, 0xFA, 0xB7, 0x7A, 0x9E, 0xCD, 0x1E, 0x3A,
 0xFF, 0xE0, 0x81, 0xD6, 0x3D, 0x99, 0x5F, 0x66, 0xCE, 0x5F, 0xDF, 0xCA, 0x7C, 0x9D, 0xF6, 0x8A,
 0xA4, 0x17, 0xF4, 0xA7, 0xE5, 0xF4, 0x21, 0x36, 0x89, 0xE3, 0x7B, 0xED, 0x19, 0x72, 0x3C, 0x05,
 0x27, 0xCB, 0x09, 0xE7, 0x2E, 0x02, 0x1B, 0xD8, 0x2E, 0x2E, 0xE5, 0x73, 0x67, 0x86, 0xBD, 0xE8,
 0xB0, 0x82, 0x1B, 0x65, 0xD2, 0xB2, 0x9C, 0x80, 0x8F, 0x1A, 0x50, 0x3B, 0x44, 0x33, 0xAF, 0x92,
 0x6D, 0x99, 0x5C, 0x9E, 0xEF, 0x61, 0x85, 0x01, 0xE9, 0x44, 0xCB, 0x00, 0xCD, 0xE9, 0x00, 0xFA,
 0xEF, 0xEA, 0x90, 0x99, 0xE3, 0x71, 0xA7, 0x1A, 0x68, 0xC7, 0xFD, 0xCE, 0xFC, 0xB2, 0x02, 0xCA,
 0xE3, 0x13, 0xFA, 0xB7, 0x3A, 0x68, 0x8E, 0x2C, 0xCB, 0xF1, 0x26, 0x03, 0xED, 0x54, 0xC9, 0xC2,
 0x0F, 0x2C, 0x1C, 0xB4, 0x02, 0x64, 0x39, 0x51, 0x38, 0xD0, 0xFA, 0xAA, 0x31, 0x33, 0x14, 0x4C,
 0x40, 0x16, 0xE2, 0x83, 0xB0, 0xAD, 0xAE, 0x52, 0x12, 0x31, 0x24, 0x70, 0x26, 0x53, 0x02, 0x90,
 0xAE, 0x8C, 0xC9, 0x1B, 0x4D, 0x84, 0x50, 0x15, 0x9E, 0xA5, 0x76, 0x53, 0x5B, 0x0D, 0xB9, 0xCE,
 0xC4, 0x6B, 0x39, 0x04, 0xCF, 0x40, 0x9D, 0x90, 0x04, 0x98, 0x98, 0xD3, 0x32, 0x51, 0x6C, 0x67,
 0x12, 0x05, 0x58, 0x21, 0x48, 0x62, 0xB7, 0x12, 0x85, 0xE1, 0xE4, 0xEA, 0xA9, 0xD6, 0x12, 0x8F,
 0x3F, 0x3B, 0xA4, 0x25, 0x6C, 0x32, 0xC6, 0xB6, 0x1F, 0x60, 0xE5, 0xC8, 0x78, 0x84, 0xEB, 0x9B,
 0x9F, 0x5B, 0x21, 0x41, 0x01, 0xA9, 0xC3, 0x10, 0xD9, 0x04, 0x07, 0xD5, 0xFC, 0x30, 0xF5, 0x8A,
 0x6A, 0x6E, 0xC5, 0xD3, 0x8A, 0x01, 0x8E, 0xE7, 0x3A, 0x1E, 0xAE, 0x2F, 0x5E, 0xD1, 0xBC, 0x59,
 0x76, 0x7C, 0x54, 0x0D, 0x60, 0x9C, 0xD9, 0xA4, 0xCC, 0x4B, 0x98, 0xAE, 0xAB, 0x93, 0x89, 0xB8,
 0xE9, 0x76, 0x3A, 0x3F, 0xAC, 0x9E, 0x9C, 0x62, 0xEE, 0xA6, 0x28, 0x22, 0xFE, 0xF6, 0x11, 0xB1,
 0x12, 0x56, 0x39, 0x3D, 0xFE, 0x35, 0xC3, 0x96, 0x83, 0xB4, 0x86, 0x14, 0xCE, 0xA7, 0x1D, 0xF0,
 0xA9, 0xA6, 0x86, 0x3C, 0x4B, 0x6B, 0xF8, 0x81, 0x03, 0x81, 0x80, 0x58, 0xBA, 0x71, 0xE1, 0x17,
 0x28, 0x1C, 0x73, 0xDC, 0x54, 0xA8, 0x5C, 0x12, 0x33, 0xB2, 0x45, 0xD4, 0x61, 0x43, 0x3F, 0x35,
 0x52, 0x0E, 0xFD, 0x54, 0x06, 0x90, 0x42, 0x47, 0xC6, 0xBE, 0x0C, 0x2F, 0x59, 0xC2, 0x22, 0xCC,
 0xE8, 0x67, 0x86, 0x2E, 0x5B, 0xA5, 0xD8, 0xC5, 0x83, 0x62, 0x0C, 0xA1, 0xCC, 0x9A, 0x0D, 0x18,
 0xBA, 0x98, 0x6A, 0x2D, 0x8D, 0x66, 0xC9, 0xA6, 0x9A, 0x46, 0x30, 0x55, 0x43, 0x4E, 0x3F, 0xB2,
 0x53, 0xAC, 0xA1, 0xAE, 0x5A, 0xD5, 0x34, 0x77, 0xF0, 0x3F, 0x95, 0x0F, 0x71, 0x4D, 0x0A, 0xB3,
 0x08, 0xFD, 0xD4, 0xCF, 0x24, 0x29, 0xB3, 0xCA, 0x6C, 0xA2, 0x60, 0x5C, 0x9C, 0x51, 0x56, 0xF8,
 0x16, 0x45, 0xB7, 0x82, 0x6B, 0xB9, 0x08, 0x75, 0xB3, 0x8B, 0x82, 0x71, 0x99, 0x0C, 0x95, 0x59,
 0x86, 0x7E, 0xAE, 0x6B, 0xF4, 0x1B, 0x77, 0xC6, 0x11, 0x21, 0xBE, 0x17, 0x6E, 0x55, 0xA2, 0x8A,
 0xE2, 0xEC, 0xAF, 0x28, 0x24, 0x8E, 0x7D, 0xD5, 0x12, 0x21, 0x0D, 0x71, 0x36, 0x47, 0xD0, 0x42,
 0x8E, 0x31, 0x59, 0x62, 0x5C, 0xDE, 0x6E, 0x78, 0x68, 0x01, 0x79, 0x67, 0x32, 0x71, 0x55, 0xBE,
 0x67, 0x46, 0x41, 0x48, 0xFB, 0xB6, 0xB9, 0xEF, 0x00, 0xE3, 0x60, 0x75, 0xE2, 0x6C, 0x0C, 0xD6,
 0x9C, 0xA8, 0x65, 0x8E, 0x15, 0x73, 0xF9, 0x11, 0xA1, 0x36, 0x56, 0x22, 0xE1, 0x83, 0x3A, 0x0E,
 0xB9, 0x52, 0x9E, 0x13, 0x91, 0xA8, 0x38, 0x13, 0x87, 0x60, 0x69, 0x59, 0xC8, 0xCA, 0x35, 0x30,
 0xA7, 0xD8, 0xFC, 0x8C, 0xAD, 0x1F, 0x2B, 0xDB, 0xB0, 0xAA, 0xF6, 0xB0, 0xED, 0x78, 0xF3, 0x88,
 0xB4, 0x68, 0x3B, 0x35, 0xBF, 0x11, 0xCC, 0x99, 0x43, 0xC6, 0x2A, 0xF6, 0x7A, 0x65, 0x4D, 0xC5,
 0xFD, 0xF9, 0x65, 0xB9, 0x11, 0x64, 0x61, 0x0D, 0x17, 0x8D, 0xB1, 0x5B, 0x26, 0xB2, 0x08, 0x86,
 0x82, 0xB4, 0x2B, 0x72, 0x55, 0x71, 0xEF, 0xC6, 0x24, 0x4B, 0x8B, 0x57, 0xFF, 0xC1, 0x0F, 0xB5,
 0xED, 0xC8, 0x8E, 0x0F, 0x33, 0x3F, 0x85, 0xD8, 0x85, 0x00, 0x2B, 0x6A, 0xBD, 0x61, 0xCC, 0x12,
 0x64, 0x28, 0x9D, 0x20, 0x40, 0xDE, 0x04, 0x43, 0x2E, 0xB8, 0x3C, 0x8C, 0x0F, 0xCB, 0x17, 0x06,
 0xB5, 0xD4, 0xA7, 0xA9, 0xFA, 0x7E, 0xF9, 0x42, 0x84, 0x27, 0x84, 0x0D, 0x9A, 0x11, 0x09, 0xD6,
 0xD2, 0xF9, 0xBB, 0x4A, 0xA7, 0xE0, 0xFD, 0x88, 0x32, 0x60, 0xB2, 0x2E, 0xA5, 0xEC, 0xEF, 0x2B,
 0x33, 0x42, 0xBC, 0xD2, 0xB3, 0xED, 0xAA, 0xB5, 0xA2, 0x6D, 0x1F, 0x77, 0x8E, 0xFB, 0x95, 0x0D,
 0x93, 0x52, 0xCB, 0xDC, 0x7A, 0x51, 0x91, 0x31, 0x92, 0x6C, 0x52, 0x0D, 0xC1, 0x60, 0xEA, 0x2F,
 0x70, 0xA0, 0x00, 0x22, 0x27, 0x6E, 0xFF, 0x61, 0xDF, 0xAA, 0xC1, 0x0D, 0x41, 0xBE, 0x5F, 0xA8,
 0xB2, 0x69, 0x96, 0x5D, 0xAF, 0x6B, 0xF6, 0x4A, 0x1D, 0x93, 0xB3, 0x6B, 0x83, 0x37, 0xA0, 0xB1,
 0x8B, 0xAD, 0x92, 0xF4, 0x6C, 0x61, 0x1B, 0x45, 0x2E, 0xA9, 0xB0, 0x37, 0xEA, 0xD0, 0xBF, 0xB2,
 0x19, 0x59, 0x5C, 0xFD, 0x41, 0x37, 0x3A, 0x46, 0x2C, 0x12, 0xFE, 0x54, 0xCC, 0x19, 0xD7, 0x4E,
 0x34, 0x9F, 0x63, 0x04, 0xA3, 0x4C, 0x5C, 0xB4, 0x24, 0xAD, 0xD5, 0x33, 0xAB, 0x13, 0x57, 0xAD,
 0x85, 0x68, 0xA5, 0x2B, 0x26, 0xDD, 0xD0, 0x5A, 0x3A, 0x0F, 0x6C, 0xDF, 0x8C, 0x54, 0x65, 0xBA,
 0x9E, 0x4B, 0xAD, 0xF2, 0x1B, 0xC4, 0x26, 0x0B, 0x5D, 0x87, 0x39, 0x76, 0xE4, 0x79, 0x14, 0xD1,
 0x16, 0x09, 0x40, 0x4D, 0xC5, 0x44, 0xF5, 0x0C, 0xB7, 0x51, 0x74, 0x66, 0x0C, 0x5B, 0xB4, 0x19,
 0x93, 0x0B, 0x40, 0x45, 0xA2, 0x48, 0x72, 0x88, 0x16, 0xFA, 0xA0, 0x54, 0xCC, 0x6A, 0x3B, 0xBB,
 0x90, 0x69, 0x34, 0x53, 0x35, 0x06, 0xF1, 0x64, 0x5D, 0xA8, 0x62, 0x7C, 0xBA, 0x60, 0x32, 0x46,
 0x8D, 0xCE, 0x61, 0xE7, 0xF0, 0x18, 0xFE, 0xA3, 0x68, 0xD0, 0xCB, 0x9D, 0x4B, 0x98, 0xB7, 0xC0,
 0xF3, 0x72, 0xC9, 0xA7, 0x7A, 0x9F, 0xA4, 0x28, 0x8D, 0x55, 0x62, 0x51, 0x3F, 0x92, 0xB2, 0x1B,
 0x26, 0xDD, 0x76, 0x45, 0x61, 0x29, 0x70, 0xE9, 0xF5, 0x1D, 0x51, 0xE1, 0x2D, 0xEB, 0x42, 0x3C,
 0xF3, 0xFF, 0x69, 0xF1, 0xAA, 0xFA, 0x7F, 0xEF, 0xED, 0x92, 0x29, 0xBE, 0x6B, 0x4F, 0x5F, 0xDB,
 0x2E, 0xE1, 0xBE, 0x7D, 0xA3, 0x53, 0x8C, 0x7A, 0x4B, 0xF4, 0x33, 0x20, 0xA1, 0x07, 0x8B, 0xAA,
 0x00, 0x56, 0x57, 0x85, 0x3D, 0x8F, 0x34, 0x66, 0x03, 0x1B, 0xD8, 0x8E, 0xEB, 0xB6, 0x5C, 0x7F,
 0x59, 0xDD, 0x89, 0x94, 0x7B, 0xF2, 0x8A, 0x9F, 0x56, 0xBB, 0xFC, 0xA6, 0xD2, 0x46, 0x90, 0xB9,
 0xFE, 0x27, 0xA4, 0xFD, 0xBE, 0x03, 0xAE, 0x34, 0x34, 0x36, 0x2B, 0x14, 0x1B, 0xF8, 0xE3, 0x76,
 0x13, 0xD5, 0x72, 0x25, 0xDE, 0x09, 0x96, 0x2E, 0xE6, 0xC2, 0xA5, 0x43, 0xCC, 0xE9, 0x06, 0x8B,
 0xAA, 0xB9, 0x1F, 0x3A, 0xFC, 0x1A, 0x4D, 0x80, 0x5D, 0x44, 0x3B, 0xF8, 0x8D, 0x96, 0xDC, 0x95,
 0x0B, 0x13, 0x99, 0xBC, 0x8E, 0x26, 0xCC, 0x74, 0xDF, 0xCE, 0x76, 0x49, 0x9B, 0xF7, 0x0E, 0xC5,
 0xB9, 0x5A, 0xED, 0xD6, 0x15, 0xED, 0x7E, 0x36, 0x32, 0xD4, 0x83, 0xD6, 0xC8, 0xE8, 0x71, 0xD2,
 0x9E, 0x04, 0xF8, 0xAA, 0x86, 0x32, 0x87, 0xE2, 0xDF, 0x01, 0xDF, 0x10, 0xDD, 0x7C, 0xED, 0xCF,
 0x0A, 0x80, 0xF0, 0xA2, 0x76, 0x3F, 0xAC, 0x31, 0x75, 0xF1, 0x94, 0x75, 0xFC, 0x31, 0xD9, 0xEE,
 0xD3, 0xF5, 0x1A, 0xE9, 0xA6, 0xA4, 0x84, 0xAA, 0x5D, 0x35, 0xAE, 0xBE, 0xCA, 0x93, 0x2E, 0xB6,
 0x49, 0xC1, 0xD5, 0x0C, 0xD6, 0xA7, 0x1E, 0x97, 0x67, 0xB7, 0x96, 0xB4, 0x4F, 0x50, 0x99, 0x39,
 0x92, 0x5D, 0xB9, 0x62, 0xEF, 0x53, 0x72, 0xA6, 0xD9, 0x73, 0x6D, 0xE6, 0xC5, 0x90, 0xC4, 0xED,
 0x33, 0x83, 0x19, 0xC6, 0xCC, 0x44, 0xC9, 0x07, 0x78, 0xF0, 0xEF, 0x8D, 0xDE, 0x89, 0xF2, 0x62,
 0x41, 0xC9, 0xE0, 0x32, 0xD1, 0x0A, 0xB7, 0xB5, 0x56, 0x4B, 0x56, 0xE1, 0x02, 0x59, 0xCE, 0x45,
 0x4A, 0xA0, 0xCA, 0xA3, 0xB2, 0x2C, 0xC3, 0xAC, 0xEE, 0xD1, 0x94, 0x3A, 0xBB, 0x33, 0x43, 0xD0,
 0xF6, 0x52, 0x77, 0x45, 0xC0, 0x51, 0x85, 0x5F, 0x1D, 0x77, 0x97, 0x36, 0x0D, 0xBB, 0x27, 0x9D,
 0x8A, 0x29, 0x4D, 0xD7, 0x0F, 0xCB, 0xE3, 0x0A, 0x8D, 0xC1, 0x7E, 0x11, 0x51, 0x4C, 0x24, 0xB6,
 0x2E, 0x95, 0x3B, 0x4F, 0xCC, 0xB9, 0x95, 0x67, 0x6A, 0x95, 0xEE, 0xD2, 0x98, 0x2A, 0x0F, 0xC7,
 0x9C, 0xCD, 0xBB, 0x1D, 0x65, 0xA6, 0x2D, 0xDD, 0x7F, 0x23, 0xF8, 0x12, 0xD6, 0x9B, 0xF4, 0x82,
 0xDC, 0x40, 0x33, 0xB1, 0x3A, 0x8D, 0x66, 0x8A, 0x5C, 0xB7, 0xCE, 0x26, 0x60, 0x29, 0x0E, 0x53,
 0xC7, 0xB2, 0x70, 0xE9, 0x2E, 0x27, 0x5D, 0xF3, 0xE6, 0x58, 0xC4, 0x47, 0xC3, 0x23, 0xE9, 0x06,
 0x96, 0xE1, 0x51, 0x7A, 0xAF, 0xCD, 0x90, 0xDE, 0xC5, 0x22, 0xDF, 0xE7, 0xC2, 0x2F, 0xB2, 0x68,
 0xA6, 0x8B, 0xC2, 0x70, 0xA4, 0xD3, 0xBB, 0x31, 0xF4, 0xEC, 0x6D, 0x2F, 0x43, 0xCB, 0x59, 0x68,
 0x8E, 0x35, 0xD2, 0x5D, 0x7F, 0xE2, 0xE7, 0xCE, 0xB1, 0xF3, 0x7C, 0xDB, 0x1B, 0x22, 0x75, 0xA4,
 0x67, 0x2E, 0x09, 0xE8, 0x8C, 0x2A, 0xFD, 0x49, 0x37, 0xEE, 0xDD, 0x79, 0xF8, 0xE0, 0xC1, 0xC9,
 0x4F, 0xF7, 0xBC, 0x71, 0x38, 0x17, 0xFF, 0xFD, 0x95, 0x5F, 0x41, 0x79, 0xF3, 0xBE, 0x77, 0xD2,
 0x87, 0x86, 0x16, 0x13, 0xE2, 0x78, 0x93, 0x70, 0x78, 0xC4, 0x98, 0xE6, 0x04, 0x39, 0x02, 0x49,
 0x0A, 0x64, 0x13, 0x09, 0x5D, 0x25, 0x5E, 0x3C, 0x24, 0x84, 0x1C, 0x35, 0x46, 0x81, 0x62, 0x08,
 0x1B, 0xC6, 0xDB, 0x05, 0xD6, 0x69, 0xE9, 0x2C, 0xB1, 0x8D, 0xFD, 0xCB, 0xBC, 0x06, 0x4C, 0x29,
 0x91, 0xF5, 0xC4, 0x28, 0x6C, 0x15, 0x31, 0x04, 0x32, 0x46, 0x4E, 0xAF, 0x87, 0x14, 0x8C, 0x49,
 0xE4, 0x13, 0xD6, 0x97, 0xB6, 0xE7, 0xF9, 0xD4, 0x76, 0x80, 0x66, 0x98, 0x26, 0x22, 0xF1, 0x63,
 0x31, 0x9B, 0x3C, 0x12, 0x09, 0xA5, 0x6E, 0xBC, 0xC3, 0x2C, 0x5C, 0x01, 0x65, 0xA5, 0x59, 0x57,
 0xB8, 0x88, 0x0C, 0x9A, 0x99, 0x5F, 0x8F, 0x45, 0x14, 0x3B, 0xA6, 0x2D, 0xC4, 0xDC, 0xA6, 0x42,
 0x20, 0xC6, 0xCE, 0x9F, 0x33, 0x07, 0x5B, 0x20, 0x37, 0x02, 0xD3, 0x76, 0x3B, 0xBA, 0xF1, 0xDB,
 0xEF, 0xCF, 0x1F, 0x37, 0x20, 0x11, 0x75, 0x2E, 0xBB, 0xBD, 0x4E, 0xA7, 0x39, 0x3C, 0xE2, 0x43,
 0xD6, 0xE6, 0xF5, 0x50, 0x37, 0x2E, 0x18, 0xAB, 0xDE, 0x29, 0xB0, 0xEA, 0xF4, 0xFA, 0x9B, 0xB3,
 0x3A, 0xD5, 0x0D, 0xC6, 0x09, 0x98, 0x5C, 0x3E, 0x38, 0x39, 0xDD, 0x9C, 0xD1, 0x03, 0x90, 0xE9,
 0x3D, 0x70, 0x3A, 0x05, 0xED, 0x4E, 0xB6, 0x51, 0xEE, 0x44, 0x37, 0x28, 0x1F, 0x88, 0x8A, 0xCB,
 0xFE, 0xE9, 0x16, 0x7C, 0xEE, 0xEB, 0xA2, 0x24, 0x52, 0x97, 0x8D, 0x8F, 0x74, 0xE3, 0xEC, 0xE7,
 0x67, 0x8D, 0x3E, 0xC8, 0xD8, 0x7B, 0x78, 0xB2, 0x39, 0xEF, 0xBE, 0x6E, 0xFC, 0x42, 0x85, 0x3C,
 0xEE, 0x01, 0xA3, 0xFE, 0x16, 0x42, 0x1E, 0xEB, 0xC6, 0x0B, 0xC6, 0x09, 0xB8, 0x5C, 0x76, 0x1F,
 0x6C, 0x21, 0x12, 0xB8, 0xD7, 0x2F, 0x8C, 0x13, 0xF8, 0x17, 0x75, 0xAF, 0x9A, 0x9C, 0x20, 0x5F,
 0x32, 0xD3, 0x94, 0xC4, 0xE9, 0x6A, 0xF6, 0xC9, 0x9C, 0x2E, 0x0B, 0xE3, 0xBF, 0x23, 0x28, 0x1D,
 0xE4, 0x6A, 0xED, 0x20, 0x16, 0x74, 0xA0, 0x12, 0x3F, 0xA8, 0x17, 0xBF, 0x92, 0x24, 0xC9, 0x65,
 0x39, 0xDD, 0xE8, 0x76, 0x2A, 0x34, 0x60, 0xB4, 0x72, 0x16, 0x64, 0xC4, 0x19, 0x05, 0x74, 0xDA,
 0x49, 0xB0, 0x18, 0xA6, 0xB7, 0x7E, 0x80, 0x8F, 0x1E, 0xEB, 0x52, 0x5C, 0x6F, 0x94, 0x22, 0x14,
 0xD2, 0xA2, 0x4B, 0xDD, 0x38, 0x39, 0xAE, 0xB2, 0xF7, 0x16, 0x70, 0x8C, 0x59, 0x9B, 0xE2, 0xE1,
 0x30, 0x5C, 0x1B, 0x91, 0x94, 0x54, 0x37, 0x9E, 0x24, 0xC7, 0xDB, 0xE0, 0xD2, 0xEA, 0x6D, 0x81,
 0x8B, 0x24, 0x0E, 0x87, 0xA6, 0xD5, 0x13, 0xD0, 0xF4, 0xF4, 0x34, 0x22, 0xBE, 0x26, 0x30, 0x55,
 0xD2, 0x6E, 0x83, 0x0B, 0x2D, 0xE2, 0x01, 0x0A, 0xC9, 0xDA, 0xA8, 0xC4, 0x84, 0x90, 0xD6, 0xC4,
 0xD1, 0xDE, 0x10, 0x49, 0x44, 0xF9, 0x0E, 0xF0, 0x08, 0x11, 0x89, 0x02, 0x76, 0x43, 0xDC, 0xDA,
 0x88, 0xA4, 0xA4, 0x50, 0x0F, 0x93, 0xE3, 0xBD, 0xA1, 0x22, 0x89, 0xF3, 0x3D, 0xE0, 0x32, 0xC7,
 0xA6, 0x83, 0xDC, 0x8F, 0xD8, 0xB6, 0xA1, 0x64, 0xAD, 0x8F, 0x4D, 0x86, 0x1C, 0xF0, 0xE1, 0xDF,
 0xB5, 0x73, 0xF6, 0x7D, 0xED, 0x1E, 0x31, 0xC7, 0xEE, 0x6B, 0x35, 0x8A, 0x1D, 0x75, 0xDF, 0xF2,
 0xDA, 0x4F, 0xE4, 0xDC, 0xB0, 0x43, 0xE8, 0x02, 0x13, 0x3C, 0x61, 0x2B, 0xE5, 0x8D, 0x79, 0xF4,
 0x74, 0xE3, 0x79, 0x80, 0xAE, 0xD8, 0xB3, 0x05, 0xDB, 0x34, 0x3D, 0xEF, 0xB0, 0xA5, 0xFD, 0x0A,
 0x4B, 0xC1, 0x6D, 0x3A, 0xB0, 0xE7, 0x01, 0x86, 0x65, 0xE2, 0x56, 0x5C, 0xEE, 0x43, 0x31, 0x83,
 0x83, 0xED, 0x98, 0x40, 0xC3, 0x7A, 0x81, 0xE7, 0x0E, 0xFA, 0x16, 0x1A, 0x2E, 0xB4, 0x1C, 0xAF,
 0x1D, 0x16, 0x40, 0xA3, 0x1B, 0x8F, 0x3F, 0x3C, 0x59, 0x3B, 0x49, 0xF1, 0xFD, 0xE6, 0x3A, 0x1E,
 0xCE, 0xB3, 0x93, 0x10, 0x50, 0x5F, 0x59, 0x6C, 0xAA, 0x23, 0xA7, 0xEE, 0x82, 0x53, 0xA1, 0x57,
 0x2C, 0x20, 0xDB, 0x9E, 0xD3, 0x25, 0x35, 0xEB, 0xE9, 0x78, 0x73, 0x19, 0x0C, 0x84, 0xF8, 0x38,
 0x41, 0xCE, 0xFA, 0x75, 0x25, 0x26, 0x64, 0x48, 0x69, 0xCF, 0xE1, 0x68, 0x57, 0x70, 0xF1, 0x69,
 0xF7, 0x86, 0x99, 0xD0, 0x7A, 0xDF, 0xC0, 0x81, 0x20, 0x33, 0xDF, 0x5A, 0x7F, 0x3B, 0x42, 0xD0,
 0xE9, 0x06, 0xA0, 0xF6, 0x0A, 0x0E, 0xD6, 0xAE, 0x32, 0x31, 0x83, 0x1B, 0x2E, 0x2F, 0x8F, 0x23,
 0xE2, 0x6F, 0x53, 0x59, 0x2E, 0x22, 0xCF, 0xBB, 0xDA, 0xA6, 0xAC, 0x9C, 0xB9, 0x7E, 0x64, 0x6D,
 0xCE, 0x01, 0x6A, 0xCA, 0x1B, 0xDB, 0x76, 0xCC, 0xCD, 0xAB, 0x12, 0x54, 0x94, 0x17, 0xFE, 0xAC,
 0x26, 0xFD, 0x0D, 0x67, 0x71, 0x6C, 0xAE, 0x9F, 0x20, 0xB0, 0x09, 0x28, 0x9E, 0x9F, 0x69, 0x17,
 0xE7, 0xAF, 0x2F, 0xDE, 0xBC, 0xDB, 0x4D, 0x76, 0x80, 0x39, 0xF7, 0x94, 0x18, 0xA8, 0xB6, 0xFB,
 0xCE, 0x09, 0x20, 0x44, 0x6F, 0x13, 0x9C, 0x7A, 0x1C, 0xA8, 0xA7, 0x17, 0x6F, 0x77, 0x85, 0x52,
 0x6F, 0x7F, 0x30, 0xF5, 0xBE, 0x05, 0x9C, 0x3E, 0xBA, 0x78, 0x81, 0xDD, 0x0D, 0xB0, 0xE2, 0x84,
 0x14, 0x2F, 0xED, 0x25, 0x3D, 0xDA, 0xDB, 0x42, 0x2E, 0x11, 0xE5, 0x3B, 0x58, 0xC6, 0x81, 0x57,
 0x7C, 0x64, 0x42, 0x6F, 0x12, 0x3C, 0x9C, 0x52, 0x37, 0xCE, 0x2F, 0xE7, 0x7E, 0x18, 0x05, 0x35,
 0x0B, 0xAA, 0x1A, 0x91, 0x6D, 0x76, 0x06, 0x53, 0x51, 0x38, 0x22, 0xF1, 0xD6, 0x20, 0xDD, 0xD9,
 0x4F, 0x30, 0xE9, 0x75, 0xFA, 0x5F, 0x15, 0x15, 0xCA, 0xFC, 0x26, 0x81, 0x99, 0x6C, 0x50, 0x77,
 0x26, 0xB4, 0xEE, 0x3C, 0x3F, 0xDB, 0x4D, 0x2A, 0x9B, 0xEC, 0xAD, 0xE0, 0x4C, 0xF6, 0x5A, 0x70,
 0x34, 0x7E, 0x51, 0x34, 0x81, 0x69, 0xC3, 0x45, 0x84, 0x20, 0x84, 0xB5, 0xF3, 0x26, 0x0B, 0x08,
 0x79, 0x53, 0xFD, 0x72, 0x9B, 0xD0, 0x89, 0xC5, 0xC8, 0x46, 0xCE, 0x71, 0x1A, 0x37, 0xF7, 0xBF,
 0x6A, 0xD4, 0x1C, 0x57, 0x4A, 0xBB, 0x4D, 0xD0, 0x50, 0x4D, 0x4C, 0xEC, 0xB8, 0xF4, 0x09, 0xA6,
 0x75, 0x01, 0x91, 0x68, 0x39, 0x26, 0xDA, 0x19, 0xFF, 0xB6, 0x0D, 0x36, 0xBD, 0x6D, 0xB0, 0x91,
 0x25, 0xCA, 0xC2, 0x73, 0x72, 0x43, 0x95, 0xA6, 0xDB, 0x3B, 0xBD, 0x49, 0x78, 0xC6, 0xF3, 0xF5,
 0x73, 0x1A, 0xD0, 0xE8, 0xC6, 0x93, 0xB7, 0xBB, 0xC9, 0x69, 0x74, 0xB2, 0x9A, 0x39, 0x6D, 0xAB,
 0x0C, 0xC6, 0x94, 0xDA, 0x77, 0x2B, 0xB6, 0xDC, 0x00, 0x8D, 0x25, 0x15, 0xFC, 0xC3, 0x8E, 0xD0,
 0x58, 0xD6, 0x47, 0xE3, 0x2B, 0x57, 0x98, 0xE5, 0xB7, 0x80, 0x4F, 0x80, 0x96, 0x1F, 0x27, 0x33,
 0xB4, 0x36, 0x46, 0x82, 0x4E, 0x37, 0xDE, 0xA1, 0xA5, 0xF6, 0xFC, 0xD5, 0xE3, 0x9D, 0x60, 0x15,
 0x4F, 0xBA, 0x1F, 0xBC, 0x12, 0x95, 0xF7, 0x8D, 0x99, 0x8B, 0xBD, 0xF5, 0x83, 0x8A, 0x12, 0xE9,
 0xC6, 0x4B, 0xEC, 0x85, 0xDA, 0x99, 0x1F, 0x88, 0xB7, 0xCD, 0xEC, 0x04, 0x35, 0x36, 0xF3, 0x7E,
 0x20, 0xE3, 0x4A, 0xEF, 0x1B, 0xAF, 0xE9, 0xCC, 0x09, 0x02, 0x3F, 0x58, 0x1B, 0x32, 0x41, 0xA7,
 0x1B, 0x2F, 0x5A, 0xAF, 0xD8, 0xD1, 0x4E, 0xE0, 0x8A, 0x67, 0xDD, 0x0F, 0x62, 0x89, 0xCE, 0xFB,
 0x06, 0x6D, 0x61, 0xBB, 0xCE, 0x7C, 0x6D, 0xC8, 0x18, 0x95, 0x6E, 0xBC, 0x6F, 0x3D, 0x83, 0x7F,
 0x77, 0x02, 0x17, 0x9F, 0x71, 0x3F, 0x60, 0x09, 0x6D, 0xF7, 0x0D, 0x95, 0x65, 0x2E, 0xD7, 0x06,
 0x0A, 0x68, 0x74, 0xE3, 0xE9, 0xD9, 0x07, 0xAD, 0xF1, 0xD4, 0x5F, 0x7A, 0xF4, 0xC6, 0x3F, 0xED,
 0xFC, 0x75, 0x73, 0x27, 0x88, 0xD1, 0xA9, 0xF7, 0x83, 0x17, 0x53, 0x7A, 0xDF, 0x68, 0xB1, 0xBB,
 0x8F, 0xC7, 0x68, 0xFD, 0x74, 0x18, 0x13, 0xD2, 0x7B, 0x5F, 0xE0, 0x48, 0x7B, 0x82, 0x76, 0x93,
 0x10, 0x93, 0x79, 0x77, 0xD1, 0xB4, 0xA7, 0x4A, 0xEE, 0x1B, 0x27, 0x1B, 0x99, 0xF8, 0xA3, 0x85,
 0xC9, 0x26, 0x37, 0x5E, 0x48, 0xB4, 0xBA, 0xF1, 0x0C, 0xBE, 0x68, 0x4F, 0xD9, 0x97, 0x5D, 0xB5,
 0x1C, 0xF2, 0xFC, 0xBB, 0x40, 0x2D, 0xA3, 0xEF, 0x37, 0x01, 0x1C, 0x34, 0x78, 0xFE, 0xC4, 0xDB,
 0xE8, 0x7E, 0xEA, 0x0C, 0xB9, 0x80, 0xEF, 0x1D, 0xFF, 0xBE, 0x5B, 0x00, 0x53, 0x21, 0x76, 0x86,
 0xA1, 0xA4, 0xF7, 0x2E, 0x60, 0x8C, 0x9F, 0x49, 0x60, 0xDB, 0x02, 0xFC, 0xE5, 0x4F, 0x55, 0x48,
 0x89, 0x57, 0xC2, 0xB0, 0xAD, 0x1B, 0x4C, 0x5A, 0x21, 0x71, 0x5C, 0x57, 0x37, 0x9E, 0x63, 0xA2,
 0x5D, 0xD0, 0xC3, 0xE1, 0x11, 0x1F, 0x50, 0x9F, 0x8B, 0xB8, 0xE1, 0x9F, 0xBE, 0x76, 0x0D, 0xCD,
 0x74, 0xE3, 0x82, 0xBE, 0x16, 0x0B, 0x78, 0xD1, 0x6F, 0xEB, 0x33, 0x63, 0x46, 0xC4, 0x5E, 0xE0,
 0x83, 0x50, 0x09, 0x48, 0xE2, 0xED, 0x24, 0xBA, 0x16, 0x1F, 0x49, 0xBF, 0x19, 0xE7, 0x6C, 0xB0,
 0x46, 0xBD, 0xAC, 0x7A, 0x3A, 0x7A, 0x15, 0xD6, 0x2C, 0xBE, 0x58, 0x3B, 0x3C, 0xF2, 0x90, 0xC2,
 0xDC, 0x05, 0x28, 0x0C, 0xF9, 0xFB, 0xD4, 0x0A, 0x58, 0x25, 0x0F, 0x53, 0x30, 0x4B, 0xA4, 0x0F,
 0x26, 0x25, 0x6A, 0xE5, 0x1F, 0x58, 0x12, 0x1B, 0xB6, 0xF5, 0x82, 0x96, 0x3D, 0x7A, 0x24, 0xEA,
 0x21, 0x3D, 0x4C, 0xCC, 0xFF, 0x9F, 0x7F, 0x57, 0xF9, 0x0C, 0x7D, 0xDB, 0x5D, 0x2A, 0x98, 0xAE,
 0x85, 0x81, 0x39, 0xD2, 0x8B, 0x1E, 0xCD, 0x28, 0xD0, 0xFC, 0x48, 0xA5, 0x7A, 0x6E, 0xB0, 0xC2,
 0xD6, 0xC3, 0xD0, 0x0C, 0x9C, 0x39, 0x31, 0x6E, 0x59, 0xBE, 0x19, 0xCD, 0xB0, 0x47, 0xDA, 0xC8,
 0xB2, 0xCE, 0x17, 0x70, 0xF0, 0xD2, 0x09, 0x09, 0x06, 0x2B, 0x34, 0x0E, 0x9E, 0xBE, 0x79, 0x75,
 0xC6, 0x1F, 0x51, 0x79, 0xE9, 0x23, 0x0B, 0x5B, 0x07, 0x87, 0x9A, 0x1D, 0x79, 0xDC, 0xCD, 0x1B,
 0x98, 0x8E, 0xE5, 0x6F, 0x1A, 0x5C, 0xA0, 0x40, 0x1B, 0xA3, 0x10, 0xBF, 0xF0, 0x43, 0xA2, 0x8D,
 0xB4, 0x84, 0xA3, 0xEB, 0x9B, 0xEC, 0xF6, 0xC5, 0xB6, 0x1F, 0x38, 0x13, 0xC7, 0x13, 0x23, 0xB9,
 0xB2, 0xBF, 0x05, 0x2E, 0x0C, 0x4D, 0xA8, 0x7E, 0xD4, 0x0E, 0x06, 0xA7, 0xDD, 0x03, 0xFA, 0x34,
 0x11, 0xC0, 0x00, 0x3F, 0x00, 0x04, 0x18, 0x06, 0x40, 0x80, 0x8F, 0x0C, 0xF1, 0x38, 0x11, 0x76,
 0xDB, 0xCC, 0xE4, 0x54, 0x40, 0x2A, 0x6D, 0xE3, 0x80, 0xE3, 0x74, 0x40, 0x1F, 0xAD, 0xBB, 0x4E,
 0x28, 0xC3, 0xA9, 0xBF, 0x2C, 0xA3, 0x0C, 0xF0, 0xCC, 0x5F, 0xE0, 0x1C, 0x71, 0x42, 0x2D, 0xBC,
 0xB9, 0x72, 0xEA, 0xD8, 0xEB, 0x0F, 0x9A, 0xF1, 0x80, 0xE4, 0xCD, 0x3D, 0x23, 0x8D, 0x04, 0x11,
 0xCE, 0xB2, 0xC5, 0x5E, 0x15, 0xD7, 0x58, 0xAC, 0x52, 0xC6, 0x36, 0x72, 0xC3, 0x1C, 0xE7, 0x68,
 0x6E, 0x21, 0x82, 0xDF, 0xD3, 0xDD, 0x5D, 0x18, 0xD0, 0xC0, 0xEE, 0x21, 0xDF, 0xEA, 0x3D, 0x14,
 0x67, 0xDE, 0x01, 0x5F, 0x82, 0x9B, 0xE9, 0xAC, 0xF2, 0xCF, 0x40, 0x91, 0xFD, 0x3A, 0xD2, 0xBC,
 0x08, 0x42, 0xF8, 0x11, 0x53, 0x41, 0x1B, 0x64, 0xCE, 0x32, 0x6A, 0x17, 0xB2, 0x93, 0x78, 0x4B,
 0x31, 0x9B, 0x93, 0xFD, 0xE8, 0xD8, 0x74, 0xE2, 0x36, 0x7B, 0x67, 0xF2, 0x08, 0x78, 0x1C, 0xC4,
 0xD9, 0xFD, 0x20, 0x7D, 0x15, 0xA5, 0x4C, 0xC4, 0xEC, 0xD0, 0x16, 0x7D, 0xB0, 0x38, 0xBF, 0x10,
 0x27, 0x6E, 0xDF, 0x5E, 0x24, 0x7C, 0x35, 0x69, 0x18, 0x9C, 0x4A, 0x4F, 0x5C, 0xC3, 0x09, 0xE9,
 0x79, 0xBF, 0x55, 0xDE, 0x39, 0x1E, 0x31, 0x73, 0x89, 0xC3, 0xAD, 0x44, 0xF2, 0x8C, 0x05, 0xEE,
 0xDD, 0xCB, 0x72, 0xBB, 0x3D, 0x12, 0x54, 0xA9, 0x26, 0x7C, 0x3C, 0x44, 0x06, 0x44, 0x1E, 0xA8,
 0x2D, 0x9E, 0x02, 0x15, 0x22, 0x39, 0x76, 0xE3, 0x76, 0xC6, 0xF0, 0x89, 0x8C, 0x36, 0x35, 0x91,
 0x63, 0x31, 0x03, 0xB1, 0x7B, 0x20, 0x9A, 0xE9, 0x53, 0x72, 0x5C, 0xBE, 0x47, 0xCC, 0xEB, 0x1B,
 0x58, 0x5C, 0x1D, 0x6D, 0x82, 0xFD, 0xA9, 0x33, 0xA7, 0x3F, 0x88, 0xF1, 0xE9, 0x54, 0x32, 0xC7,
 0x49, 0x86, 0x23, 0x55, 0x2C, 0x27, 0x37, 0xFD, 0x30, 0x7E, 0xF4, 0x3A, 0x81, 0xB8, 0x56, 0x21,
 0x3F, 0x95, 0xCA, 0x26, 0x07, 0x36, 0xF4, 0x5A, 0x46, 0xFA, 0x7B, 0xCE, 0xD4, 0xC9, 0xC0, 0x02,
 0x26, 0x6C, 0x82, 0x55, 0x26, 0xA5, 0x92, 0xC7, 0x37, 0x8A, 0x29, 0x0C, 0xC2, 0xD8, 0x2D, 0xC7,
 0xD4, 0x14, 0x6C, 0x56, 0x38, 0x2C, 0x63, 0x95, 0x2B, 0xFC, 0x0A, 0x86, 0x3C, 0x10, 0x1B, 0xBC,
 0xAE, 0x3D, 0x61, 0x35, 0x8A, 0x32, 0x17, 0x31, 0x96, 0xFD, 0xFD, 0x96, 0x2C, 0xFC, 0x75, 0x1C,
 0x76, 0x49, 0x0A, 0x94, 0xFD, 0x80, 0xFA, 0x7F, 0x6C, 0x69, 0x1A, 0x22, 0xA9, 0xA3, 0x89, 0x07,
 0xFB, 0xE3, 0xF8, 0x48, 0xE1, 0x30, 0x21, 0xF7, 0x49, 0x91, 0x32, 0xC8, 0x89, 0x2A, 0x87, 0x08,
 0xC8, 0xDD, 0xD5, 0xE4, 0x47, 0xF5, 0xC7, 0x90, 0x42, 0x3F, 0x67, 0xF8, 0xB0, 0x8B, 0x32, 0x09,
 0x13, 0xFE, 0x1B, 0xBF, 0xCD, 0xA9, 0xE5, 0x7B, 0x58, 0xCD, 0x5D, 0x0E, 0x12, 0x15, 0x4F, 0x5E,
 0xC2, 0xF3, 0x4C, 0xA3, 0xF1, 0xCC, 0x21, 0x0A, 0x86, 0x07, 0x90, 0xBE, 0x55, 0xBC, 0x44, 0x63,
 0x97, 0x12, 0x04, 0x98, 0x44, 0x81, 0x27, 0x47, 0x21, 0xCF, 0x64, 0x7F, 0x47, 0x38, 0xB8, 0x02,
 0x46, 0x9F, 0xEE, 0x7E, 0x89, 0xEB, 0xC2, 0xF5, 0x11, 0x7B, 0x34, 0xC1, 0x77, 0x1F, 0x41, 0xE5,
 0x18, 0xDD, 0xFD, 0xC2, 0xA0, 0xBE, 0xBE, 0x07, 0x53, 0xC2, 0x17, 0x36, 0xF1, 0xF5, 0x27, 0xCE,
 0xC2, 0xA6, 0x2F, 0x9A, 0x6D, 0x30, 0x16, 0x31, 0x6E, 0x6D, 0x32, 0xC5, 0x5E, 0x23, 0xC0, 0xE1,
 0x1C, 0xD8, 0xE3, 0x34, 0x01, 0xC6, 0x33, 0xFA, 0x2E, 0x86, 0x12, 0x35, 0x69, 0x7C, 0x0A, 0x30,
 0xD0, 0x81, 0x00, 0xC4, 0xD7, 0xEE, 0x7E, 0x61, 0x2C, 0xAE, 0x35, 0x1B, 0xB2, 0x40, 0x38, 0xC5,
 0xD6, 0x21, 0xD4, 0x2B, 0x44, 0xE8, 0x13, 0xB8, 0x77, 0xBF, 0xC4, 0xAC, 0xDA, 0xFC, 0xA7, 0xEB,
 0x4F, 0x89, 0x87, 0x24, 0x45, 0x24, 0xAE, 0x7D, 0xEC, 0x44, 0x9B, 0xF1, 0xBA, 0x60, 0x28, 0xF8,
 0xC1, 0x63, 0xD7, 0x6D, 0x1C, 0xF0, 0x07, 0x95, 0x45, 0x6E, 0x6F, 0x43, 0xB3, 0x7A, 0x8E, 0x40,
 0x6C, 0xB9, 0x28, 0xB0, 0x7C, 0xE5, 0x7B, 0xA6, 0xEB, 0x98, 0x9F, 0x69, 0x42, 0x6F, 0x66, 0x05,
 0xE7, 0x19, 0xC2, 0x6D, 0xF3, 0x17, 0xCF, 0xBC, 0xF6, 0x2D, 0x9C, 0x73, 0xD3, 0x26, 0x15, 0xE3,
 0xE8, 0x08, 0xAC, 0x8C, 0xAC, 0x38, 0x95, 0x71, 0x8C, 0xE8, 0x1B, 0x0A, 0xB8, 0x99, 0x32, 0x16,
 0xE6, 0xCA, 0x08, 0x5D, 0xB8, 0xCD, 0xD2, 0x2A, 0x1F, 0xAB, 0x9C, 0xBA, 0x2D, 0x47, 0x4F, 0x4B,
 0x6C, 0xF1, 0x57, 0xE8, 0x7B, 0x8D, 0xE6, 0xAD, 0xC4, 0x0C, 0xAB, 0x3C, 0xE8, 0x04, 0x12, 0x83,
 0x8C, 0x89, 0x8A, 0xCC, 0x94, 0x5D, 0x0D, 0x1C, 0xA4, 0x99, 0xA4, 0xC0, 0x66, 0xF4, 0x23, 0x55,
 0x42, 0x56, 0x06, 0xD9, 0xBC, 0x7F, 0x30, 0x97, 0xF9, 0xF3, 0x90, 0x97, 0x4E, 0x29, 0x23, 0x35,
 0x25, 0x73, 0x71, 0xFF, 0xA3, 0xAF, 0xE8, 0x97, 0xDB, 0x17, 0xE8, 0xC9, 0xCF, 0x5D, 0x4C, 0x0F,
 0x9F, 0x5C, 0xFD, 0x0C, 0x25, 0x9F, 0x37, 0x2E, 0x4C, 0x96, 0x94, 0xE0, 0x2C, 0x69, 0x1A, 0x2B,
 0x29, 0xD3, 0x06, 0x53, 0xE2, 0xC1, 0x9A, 0x7E, 0x9E, 0x6F, 0xCA, 0x38, 0x24, 0xEB, 0x83, 0x0C,
 0x29, 0xE5, 0x5A, 0x4D, 0x9B, 0x59, 0x15, 0x48, 0xF4, 0x72, 0xAE, 0x2B, 0xA3, 0x97, 0x16, 0x02,
 0x12, 0x35, 0x73, 0xE4, 0x6A, 0x62, 0xB9, 0x25, 0x3E, 0x90, 0x8C, 0x1D, 0x12, 0x7F, 0xCE, 0x57,
 0x26, 0x39, 0x27, 0x5F, 0x3A, 0x9E, 0xE5, 0x2F, 0xDB, 0xF4, 0x7C, 0x43, 0x94, 0x56, 0x59, 0xD1,
 0xB6, 0xE3, 0x81, 0x01, 0x5F, 0xFC, 0xFA, 0xEA, 0x25, 0x4D, 0x39, 0xF2, 0x0A, 0xE7, 0x20, 0xDB,
 0x17, 0xB1, 0x77, 0x02, 0x2B, 0x67, 0xA0, 0xB0, 0xB5, 0xA1, 0xD5, 0xE6, 0xA9, 0x26, 0x69, 0x47,
 0x69, 0x24, 0xD0, 0xC3, 0x4F, 0x7C, 0x4E, 0x5A, 0x78, 0x32, 0x00, 0x37, 0x2B, 0x65, 0xF1, 0xE7,
 0x79, 0x51, 0x20, 0x0E, 0x1F, 0x13, 0x02, 0xEE, 0xAA, 0x71, 0x47, 0x0E, 0x69, 0x8E, 0x11, 0xAB,
 0xC3, 0x5B, 0x9A, 0x0C, 0x7E, 0x41, 0xC8, 0xA7, 0x66, 0x12, 0x31, 0x96, 0x15, 0x5E, 0xCA, 0x93,
 0x68, 0x0E, 0x71, 0x89, 0x1F, 0x7D, 0x34, 0xC7, 0x90, 0x1A, 0x9F, 0x82, 0xE7, 0xB7, 0x3D, 0xD0,
 0xA0, 0x79, 0x5D, 0xA6, 0x0E, 0x37, 0x57, 0x0A, 0x64, 0x5D, 0x21, 0x58, 0x12, 0x52, 0x73, 0xCB,
 0xD8, 0x47, 0xCD, 0x4E, 0xF6, 0xDE, 0x73, 0x2F, 0x6E, 0x6D, 0x8B, 0x0C, 0x3B, 0x5A, 0x35, 0x2D,
 0xEF, 0x6E, 0x32, 0x0C, 0xD2, 0xF4, 0xB2, 0x22, 0x6C, 0xAE, 0x81, 0x91, 0xFC, 0x22, 0x1E, 0x10,
 0xCB, 0x2E, 0x07, 0x44, 0x81, 0xEC, 0xD9, 0xDE, 0x2F, 0xD7, 0x2C, 0xE4, 0x20, 0x17, 0x39, 0x4C,
 0xA3, 0x2F, 0x2A, 0x98, 0xD2, 0xF2, 0x2C, 0x9C, 0xA0, 0x4E, 0x99, 0x50, 0xE6, 0xBF, 0xD2, 0x7A,
 0xC1, 0x67, 0x88, 0xA5, 0xCD, 0xF7, 0xA8, 0xD9, 0xDA, 0x70, 0x16, 0x81, 0x95, 0x66, 0xB1, 0x4F,
 0xF2, 0xDF, 0x68, 0xC3, 0x96, 0x04, 0x0F, 0x34, 0x70, 0x65, 0x41, 0x0D, 0xA7, 0xA5, 0x4C, 0x20,
 0xBA, 0xBD, 0x0A, 0x02, 0xE9, 0xAE, 0x27, 0x89, 0x56, 0xEA, 0x22, 0x4B, 0xD3, 0x5F, 0xFE, 0x3E,
 0x1D, 0xC6, 0x02, 0xB8, 0xAE, 0x6A, 0xAE, 0xC0, 0x09, 0xC6, 0x35, 0x13, 0xB7, 0xA1, 0x44, 0xA2,
 0xAD, 0x92, 0x9C, 0xA6, 0xA0, 0x2D, 0x5E, 0x6D, 0x89, 0x73, 0xDE, 0x54, 0xD4, 0x0A, 0xAF, 0xB6,
 0xC1, 0xD7, 0x92, 0x83, 0xC4, 0xF7, 0x3F, 0xA6, 0x26, 0xC4, 0xE5, 0xF6, 0xC6, 0xB2, 0xBD, 0xE3,
 0xE5, 0x40, 0x05, 0x85, 0x7C, 0x9B, 0x26, 0x37, 0x17, 0xAE, 0x69, 0x2E, 0x2C, 0xCC, 0x45, 0x09,
 0xD2, 0x0E, 0xB4, 0x7A, 0x6D, 0x92, 0xF8, 0xFF, 0x87, 0x27, 0xA9, 0x66, 0xCB, 0x71, 0xA9, 0x9C,
 0xA2, 0xF7, 0x97, 0xD4, 0x2B, 0x27, 0xC8, 0x3C, 0xCB, 0xC1, 0xD5, 0x5A, 0x8E, 0xEB, 0xA9, 0x15,
 0xAF, 0x1D, 0x28, 0x41, 0xAA, 0x96, 0x7A, 0x85, 0x11, 0xAB, 0x92, 0xEC, 0x75, 0xB3, 0xFF, 0xDD,
 0x42, 0xF2, 0x66, 0x89, 0x44, 0x58, 0xBE, 0x51, 0x5C, 0x59, 0x3D, 0xF9, 0x30, 0x49, 0xC9, 0x64,
 0x8D, 0x52, 0x49, 0x9A, 0x8C, 0x94, 0xA8, 0x13, 0x39, 0x4A, 0xA9, 0xE3, 0x41, 0xBC, 0xEC, 0x26,
 0x5F, 0x6B, 0x19, 0x2B, 0x19, 0x9D, 0x06, 0x4E, 0xCA, 0x80, 0x77, 0xFC, 0x86, 0x76, 0x3F, 0xBF,
 0x26, 0xE6, 0xBD, 0x17, 0x57, 0x36, 0xD7, 0x71, 0xC9, 0x03, 0x12, 0x95, 0x32, 0x63, 0x92, 0x00,
 0xE1, 0xF4, 0x45, 0x62, 0x56, 0x8A, 0x82, 0x5C, 0x1C, 0x90, 0x86, 0xFE, 0xD6, 0xC5, 0x74, 0xBD,
 0x22, 0x9E, 0xC6, 0x39, 0xFB, 0xF9, 0x99, 0xE6, 0x07, 0x1A, 0x7F, 0xC1, 0x5D, 0x90, 0xBC, 0x5B,
 0x44, 0x13, 0x6F, 0x7F, 0x62, 0xAB, 0x42, 0x9A, 0x83, 0xC8, 0xD4, 0x09, 0xA1, 0x49, 0xA6, 0x4F,
 0xDE, 0xE2, 0xDB, 0x7A, 0xF2, 0x82, 0xA7, 0x4A, 0xF5, 0x78, 0x57, 0xFC, 0x53, 0xA2, 0x48, 0xCE,
 0x9C, 0x9C, 0x26, 0xB5, 0xE5, 0x6D, 0xA1, 0xE3, 0x4A, 0x22, 0x2A, 0x5B, 0x87, 0xAE, 0x61, 0xC2,
 0xE4, 0xF4, 0x37, 0x6B, 0x45, 0xB5, 0x02, 0x95, 0x86, 0x4C, 0xC8, 0x52, 0x5B, 0xA6, 0xBA, 0xAE,
 0x58, 0x53, 0xB5, 0xD8, 0x2F, 0x41, 0x94, 0xEE, 0x79, 0x29, 0xB3, 0x7C, 0x31, 0x2A, 0xDC, 0xE2,
 0xBC, 0xB0, 0xF2, 0xCF, 0xF0, 0x28, 0xDE, 0x59, 0xE5, 0xDF, 0xF8, 0xAB, 0x8B, 0x86, 0x47, 0xFC,
 0x7F, 0x22, 0xF6, 0x5F, 0x04, 0x9C, 0x39, 0x76, 0x5C, 0x6C, 0x00, 0x00
};


//File: index_ov3660.html.gz, Size: 4408
#define index_ov3660_html_gz_len 4408
const uint8_t index_ov3660_html_gz[] = {
 0x1F, 0x8B, 0x08, 0x08, 0x28, 0x5C, 0xAE, 0x5C, 0x00, 0x03, 0x69, 0x6E, 0x64, 0x65, 0x78, 0x5F,
 0x6F, 0x76, 0x33, 0x36, 0x36, 0x30, 0x2E, 0x68, 0x74, 0x6D, 0x6C, 0x00, 0xE5, 0x5D, 0xEB, 0x92,
 0xD3, 0xC6, 0x12, 0xFE, 0xCF, 0x53, 0x08, 0x41, 0x58, 0x6F, 0x65, 0xED, 0xF5, 0x6D, 0xCD, 0xE2,
 0xD8, 0xE6, 0xC0, 0xB2, 0x84, 0x54, 0x01, 0x49, 0x20, 0x21, 0xA9, 0x4A, 0xA5, 0x60, 0x2C, 0x8D,
 0xED, 0x09, 0xB2, 0xE4, 0x48, 0x23, 0x7B, 0x37, 0xD4, 0x3E, 0xC7, 0x79, 0xA0, 0xF3, 0x62, 0xA7,
 0xE7, 0x22, 0x69, 0x24, 0x8F, 0x2E, 0xB6, 0x59, 0x9B, 0xC3, 0x31, 0x55, 0x20, 0x5B, 0xD3, 0x3D,
 0xDD, 0xFD, 0xF5, 0x6D, 0x46, 0x17, 0x06, 0x77, 0x6D, 0xCF, 0xA2, 0xD7, 0x0B, 0x6C, 0xCC, 0xE8,
 0xDC, 0x19, 0xDD, 0x19, 0x88, 0x7F, 0x0C, 0xF8, 0x0C, 0x66, 0x18, 0xD9, 0xE2, 0x90, 0x7F, 0x9D,
 0x63, 0x8A, 0x0C, 0x6B, 0x86, 0xFC, 0x00, 0xD3, 0xA1, 0x19, 0xD2, 0x49, 0xFD, 0xDC, 0xCC, 0x9E,
 0x76, 0xD1, 0x1C, 0x0F, 0xCD, 0x25, 0xC1, 0xAB, 0x85, 0xE7, 0x53, 0xD3, 0xB0, 0x3C, 0x97, 0x62,
 0x17, 0x86, 0xAF, 0x88, 0x4D, 0x67, 0x43, 0x1B, 0x2F, 0x89, 0x85, 0xEB, 0xFC, 0xCB, 0x09, 0x71,
 0x09, 0x25, 0xC8, 0xA9, 0x07, 0x16, 0x72, 0xF0, 0xB0, 0xA5, 0xF2, 0xA2, 0x84, 0x3A, 0x78, 0x74,
 0xF9, 0xF6, 0xA7, 0x4E, 0xDB, 0xF8, 0xF1, 0x5D, 0xA7, 0xD7, 0x6B, 0x0E, 0x4E, 0xC5, 0x6F, 0xC9,
 0x98, 0x80, 0x5E, 0xAB, 0xDF, 0xD9, 0x67, 0xEC, 0xD9, 0xD7, 0xC6, 0xA7, 0xD4, 0x4F, 0xEC, 0x33,
 0x01, 0x21, 0xEA, 0x13, 0x34, 0x27, 0xCE, 0x75, 0xDF, 0x78, 0xE2, 0xC3, 0x9C, 0x27, 0x2F, 0xB0,
 0xB3, 0xC4, 0x94, 0x58, 0xE8, 0x24, 0x40, 0x6E, 0x50, 0x0F, 0xB0, 0x4F, 0x26, 0xDF, 0xAD, 0x11,
 0x8E, 0x91, 0xF5, 0x71, 0xEA, 0x7B, 0xA1, 0x6B, 0xF7, 0x8D, 0x7B, 0xAD, 0x73, 0xF6, 0x67, 0x7D,
 0x90, 0xE5, 0x39, 0x9E, 0x0F, 0xE7, 0x2F, 0x9F, 0xB3, 0x3F, 0xEB, 0xE7, 0xF9, 0xEC, 0x01, 0xF9,
 0x07, 0xF7, 0x8D, 0x56, 0x6F, 0x71, 0x95, 0x3A, 0x7F, 0x73, 0x27, 0xF5, 0x75, 0xD6, 0xCE, 0x93,
 0x5E, 0xD2, 0x9F, 0x17, 0xD3, 0x07, 0xD8, 0xA2, 0xC4, 0x73, 0x1B, 0x73, 0x44, 0x5C, 0x0D, 0x27,
 0x9B, 0x04, 0x0B, 0x07, 0x81, 0x0D, 0x26, 0x0E, 0x2E, 0xE4, 0x73, 0x6F, 0x8E, 0xDD, 0xF0, 0xA4,
 0x84, 0x1B, 0x63, 0x52, 0xB7, 0x89, 0x2F, 0x46, 0xF5, 0x99, 0x1D, 0xC2, 0xB9, 0x5B, 0xCA, 0xB6,
 0x48, 0x2E, 0xD7, 0x73, 0xB1, 0xC6, 0x80, 0x6C, 0xA2, 0x95, 0x8F, 0x16, 0x6C, 0x00, 0xFB, 0x77,
 0x7D, 0xC8, 0x9C, 0xB8, 0xC2, 0xA9, 0xFA, 0x46, 0xA7, 0xDB, 0x5C, 0x5C, 0x95, 0x40, 0xD9, 0xE9,
 0xB1, 0x3F, 0xEB, 0x83, 0x16, 0xC8, 0xB6, 0x89, 0x3B, 0xED, 0x1B, 0xE7, 0x5A, 0x16, 0x9E, 0x6F,
 0x63, 0xBF, 0xEE, 0x23, 0x9B, 0x84, 0x41, 0xDF, 0xE8, 0xEA, 0xC6, 0xCC, 0x91, 0x3F, 0x05, 0x59,
 0xA8, 0x07, 0xC2, 0xD6, 0x5B, 0x5A, 0x49, 0xE4, 0x10, 0x9F, 0x4C, 0x67, 0x14, 0x20, 0x5D, 0x1B,
 0x93, 0x35, 0x9A, 0x0C, 0xA1, 0x32, 0x3C, 0x0B, 0xED, 0xA6, 0xB7, 0x1A, 0x72, 0xC8, 0xD4, 0xAD,
 0x13, 0x8A, 0xE7, 0xA0, 0x4E, 0x40, 0x7D, 0x4C, 0xAD, 0x59, 0x91, 0x28, 0x13, 0x32, 0x0D, 0x7D,
 0xAC, 0x11, 0x24, 0xB6, 0x5B, 0x81, 0xC2, 0x70, 0x72, 0xFD, 0x54, 0x7D, 0x85, 0xC7, 0x1F, 0x09,
 0xAD, 0x4B, 0x9B, 0x8C, 0xF1, 0xC4, 0xF3, 0xB1, 0x76, 0x64, 0x34, 0xC2, 0xF1, 0xAC, 0x8F, 0xF5,
 0x80, 0x22, 0x9F, 0x56, 0x61, 0x88, 0x26, 0x14, 0xFB, 0xE5, 0xFC, 0x30, 0xF3, 0x8A, 0x72, 0x6E,
 0xF9, 0xD3, 0xCA, 0x01, 0xC4, 0x75, 0x88, 0x8B, 0xAB, 0x8B, 0x97, 0x37, 0x6F, 0x9A, 0x9D, 0x18,
 0x55, 0x01, 0x18, 0x32, 0x9F, 0x16, 0x79, 0x09, 0xD7, 0x75, 0x7D, 0x32, 0x19, 0x37, 0xAD, 0x66,
 0xF3, 0x9B, 0xF5, 0x93, 0x33, 0x2C, 0xDC, 0x14, 0x85, 0xD4, 0xDB, 0x3D, 0x22, 0xD6, 0xC2, 0x2A,
 0xA3, 0xC7, 0xBF, 0xE6, 0xD8, 0x26, 0xC8, 0xA8, 0x29, 0xE1, 0x7C, 0xDE, 0x04, 0x9F, 0x3A, 0x36,
 0x90, 0x6B, 0x1B, 0x35, 0xCF, 0x27, 0x10, 0x08, 0x88, 0xA7, 0x1B, 0x07, 0x7E, 0x81, 0xC2, 0xB1,
 0xC0, 0xC7, 0x1A, 0x95, 0x0B, 0x62, 0x46, 0xB5, 0x88, 0x3E, 0x6C, 0xD8, 0xA7, 0x42, 0xCA, 0x61,
 0x9F, 0xD2, 0x00, 0xD2, 0xE8, 0xC8, 0xD9, 0x17, 0xE1, 0xA5, 0x4A, 0x98, 0x87, 0x19, 0xFB, 0xCC,
 0xD1, 0x55, 0xBD, 0x10, 0xBB, 0x68, 0x50, 0x84, 0x21, 0x94, 0x59, 0xAB, 0x06, 0x43, 0x97, 0x33,
 0xA3, 0x6E, 0xB0, 0x2C, 0x79, 0xAC, 0xA7, 0x91, 0x4C, 0xF5, 0x90, 0xB3, 0x8F, 0xEA, 0x14, 0x1B,
 0xA8, 0xAB, 0x57, 0x35, 0xC9, 0x1D, 0xE2, 0x8F, 0xCE, 0x87, 0x84, 0x26, 0xB9, 0x59, 0x84, 0x7D,
 0xAA, 0x67, 0x92, 0x84, 0x59, 0x69, 0x36, 0xD1, 0x30, 0xCE, 0xCF, 0x28, 0x6B, 0x7C, 0xF3, 0xA2,
 0x5B, 0xC3, 0xB5, 0x58, 0x84, 0xAA, 0xD9, 0x45, 0xC3, 0xB8, 0x48, 0x86, 0xD2, 0x2C, 0xC3, 0x3E,
 0x37, 0x15, 0xFA, 0x8D, 0x7B, 0xE3, 0x90, 0x52, 0xCF, 0x0D, 0x76, 0x2A, 0x51, 0x79, 0x71, 0xF6,
 0x57, 0x18, 0x50, 0x32, 0xB9, 0xAE, 0xCB, 0x90, 0x86, 0x38, 0x5B, 0x20, 0x68, 0x21, 0xC7, 0x98,
 0xAE, 0x30, 0x2E, 0x6E, 0x37, 0x5C, 0xB4, 0x84, 0xBC, 0x33, 0x9D, 0x3A, 0x3A, 0xDF, 0xB3, 0x42,
 0x3F, 0x60, 0x7D, 0xDB, 0xC2, 0x23, 0xC0, 0xD8, 0x5F, 0x9F, 0x38, 0x1D, 0x83, 0x15, 0x27, 0xAA,
 0x5B, 0x63, 0xCD, 0x5C, 0x5E, 0x48, 0x99, 0x8D, 0xB5, 0x48, 0x78, 0xA0, 0x0E, 0xA1, 0xD7, 0xDA,
 0x73, 0x32, 0x12, 0x35, 0x67, 0xA2, 0x10, 0x2C, 0x2C, 0x0B, 0x69, 0xB9, 0xFA, 0xD6, 0x0C, 0x5B,
 0x1F, 0xB1, 0xFD, 0x6D, 0x69, 0x1B, 0x56, 0xD6, 0x1E, 0x36, 0x88, 0xBB, 0x08, 0x69, 0x9D, 0xB5,
 0x53, 0x8B, 0x5B, 0xC1, 0x9C, 0x3B, 0x64, 0xA4, 0x62, 0xBB, 0x5D, 0xD4, 0x54, 0x9C, 0x2D, 0xAE,
 0x8A, 0x8D, 0xA0, 0x0A, 0x3B, 0x72, 0xD0, 0x18, 0x3B, 0x45, 0x22, 0xCB, 0x60, 0xC8, 0x49, 0xBB,
 0x32, 0x57, 0xE5, 0xF7, 0x6E, 0x5C, 0xB2, 0xA4, 0x78, 0x75, 0x1F, 0x7E, 0x53, 0xD9, 0x8E, 0xFC,
 0xF8, 0x24, 0xF5, 0x53, 0x80, 0x1D, 0x08, 0xB0, 0xBC, 0xD6, 0x1B, 0xC6, 0xAC, 0x40, 0x86, 0xC2,
 0x09, 0x7C, 0xE4, 0x4E, 0x31, 0xE4, 0x82, 0xAB, 0x93, 0xE8, 0xB0, 0x78, 0x61, 0x50, 0x49, 0x7D,
 0x96, 0xAA, 0xCF, 0x8A, 0x17, 0x22, 0x22, 0x21, 0x6C, 0xD1, 0x8C, 0x28, 0xB0, 0x16, 0xCE, 0xDF,
 0xD2, 0x3A, 0x85, 0xE8, 0x47, 0xB4, 0x01, 0x93, 0x76, 0x29, 0x6D, 0x7F, 0x5F, 0x9A, 0x11, 0xA2,
 0x95, 0xDE, 0x64, 0x52, 0xB6, 0x56, 0x9C, 0x4C, 0x3A, 0xCD, 0x4E, 0xB7, 0xB4, 0x61, 0xD2, 0x6A,
 0x99, 0x59, 0x2F, 0x6A, 0x32, 0x46, 0x9C, 0x4D, 0xCA, 0x21, 0xE8, 0xCF, 0xBC, 0x25, 0xF6, 0x35,
 0x40, 0x64, 0xC4, 0xED, 0x3E, 0xEA, 0xDA, 0x15, 0xB8, 0x21, 0xC8, 0xF7, 0x4B, 0x5D, 0x36, 0x4D,
 0xB3, 0x6B, 0xB7, 0xAC, 0x76, 0xA1, 0x63, 0x0A, 0x76, 0x0D, 0xF0, 0x06, 0x34, 0x76, 0xB0, 0x5D,
 0x90, 0x9E, 0x6D, 0x3C, 0x41, 0xA1, 0x43, 0x4B, 0xEC, 0x8D, 0x9A, 0xEC, 0x4F, 0xD1, 0x8C, 0x3C,
 0xAE, 0xFE, 0x60, 0x1B, 0x1D, 0x43, 0x1E, 0x09, 0x7F, 0x6A, 0xE6, 0x8C, 0x6A, 0x27, 0x5A, 0x2C,
 0x30, 0x82, 0x51, 0x16, 0xCE, 0x5B, 0x92, 0x56, 0xEA, 0x99, 0xF5, 0x89, 0xAB, 0xD2, 0x42, 0xB4,
 0xD4, 0x15, 0xE3, 0x6E, 0x68, 0x23, 0x9D, 0xFB, 0x13, 0xCF, 0x0A, 0x75, 0x65, 0xBA, 0x9A, 0x4B,
 0xAD, 0xF3, 0xEB, 0x47, 0x26, 0x0B, 0x1C, 0xC2, 0x1D, 0x3B, 0x74, 0x5D, 0x86, 0x68, 0x9D, 0xFA,
 0xA0, 0xA6, 0x66, 0xA2, 0x6A, 0x86, 0xDB, 0x2A, 0x3A, 0x53, 0x86, 0xCD, 0xDB, 0x8C, 0xC9, 0x04,
 0xA0, 0x26, 0x51, 0xC4, 0x39, 0xC4, 0x08, 0x3C, 0x50, 0x2A, 0x62, 0xB5, 0x9B, 0x5D, 0xE8, 0x2C,
 0x9C, 0xEB, 0x1A, 0x83, 0x68, 0xB2, 0x16, 0x54, 0x31, 0x31, 0x9D, 0x3F, 0x1D, 0xA3, 0x5A, 0xF3,
 0xA4, 0x79, 0xD2, 0x81, 0xBF, 0x34, 0x0D, 0x7A, 0xB1, 0x73, 0x49, 0xF3, 0xE6, 0x78, 0x5E, 0x26,
 0xF9, 0x94, 0xEF, 0x93, 0xE4, 0xA5, 0xB1, 0x52, 0x2C, 0xAA, 0x47, 0x52, 0x7A, 0xC3, 0xA4, 0xD5,
 0x28, 0x29, 0x2C, 0x39, 0x2E, 0xBD, 0xB9, 0x23, 0x6A, 0xBC, 0x65, 0x53, 0x88, 0xE7, 0xDE, 0x3F,
 0x75, 0x51, 0x55, 0xFF, 0xEF, 0xBD, 0x5D, 0x31, 0xC5, 0x57, 0xED, 0xE9, 0x1B, 0xDB, 0x25, 0x38,
 0xB4, 0x6F, 0x34, 0xF3, 0x51, 0xAF, 0xCB, 0x7E, 0x06, 0x24, 0x74, 0x61, 0x51, 0xE5, 0xC3, 0xEA,
 0x2A, 0xB7, 0xE7, 0x51, 0xC6, 0x6C, 0x61, 0x83, 0x09, 0x71, 0x9C, 0xBA, 0xE3, 0xAD, 0xCA, 0x3B,
 0x91, 0x62, 0x4F, 0x5E, 0xF3, 0xD3, 0x72, 0x97, 0xDF, 0x56, 0xDA, 0x10, 0x32, 0xD7, 0xFF, 0x84,
 0xB4, 0x5F, 0x77, 0xC0, 0x15, 0x86, 0xC6, 0x76, 0x85, 0x62, 0x0B, 0x7F, 0xDC, 0x6D, 0xA2, 0x4A,
 0xAE, 0x24, 0x3A, 0xC1, 0xC2, 0xC5, 0x5C, 0xB0, 0x22, 0xD4, 0x9A, 0x6D, 0xB1, 0xA8, 0x5A, 0x78,
 0x01, 0x11, 0xD7, 0x68, 0x7C, 0xEC, 0x20, 0xD6, 0xC1, 0x6F, 0xB5, 0xE4, 0x2E, 0x5D, 0x98, 0xA8,
 0xE4, 0x55, 0x34, 0xE1, 0xA6, 0xFB, 0x72, 0xB6, 0x4B, 0x1A, 0xA2, 0x77, 0xC8, 0xCF, 0xD5, 0x7A,
 0xB7, 0x2E, 0x69, 0xF7, 0xD3, 0x91, 0xA1, 0x1F, 0xB4, 0x41, 0x46, 0x8F, 0x92, 0xF6, 0xD4, 0xC7,
 0xD7, 0x15, 0x94, 0x39, 0x91, 0xFF, 0xF6, 0xC5, 0x86, 0xE8, 0xF6, 0x6B, 0x7F, 0x5E, 0x00, 0xA4,
 0x17, 0x35, 0xBA, 0x41, 0x85, 0xA9, 0xF3, 0xA7, 0xAC, 0xE2, 0x8F, 0xF1, 0x76, 0x9F, 0x69, 0x56,
 0x48, 0x37, 0x05, 0x25, 0x54, 0xEF, 0xAA, 0x51, 0xF5, 0xD5, 0x9E, 0x74, 0xF0, 0x84, 0xE6, 0x5C,
 0xCD, 0xE0, 0x7D, 0x6A, 0xA7, 0x38, 0xBB, 0xD5, 0x95, 0x7D, 0x82, 0xD2, 0xCC, 0x11, 0xEF, 0xCA,
 0xE5, 0x7B, 0x9F, 0x96, 0x33, 0xCB, 0x9E, 0x1B, 0x33, 0xCF, 0x87, 0x24, 0x6A, 0x9F, 0x39, 0xCC,
 0x30, 0x66, 0x2E, 0x4B, 0x3E, 0xC0, 0x83, 0x7F, 0xAF, 0xB5, 0x7B, 0xDA, 0x8B, 0x05, 0x05, 0x83,
 0x8B, 0x44, 0xCB, 0xDD, 0xD6, 0x5A, 0x2F, 0x59, 0xB9, 0x0B, 0x64, 0x35, 0x17, 0x69, 0x81, 0x2A,
 0x8E, 0xCA, 0xA2, 0x0C, 0xB3, 0xBE, 0x47, 0x53, 0xE8, 0xEC, 0x64, 0x8E, 0xA0, 0xED, 0x65, 0xEE,
 0x8A, 0x80, 0xA3, 0x0E, 0xBF, 0x2A, 0xEE, 0xAE, 0x6C, 0x1A, 0xB6, 0x7A, 0xCD, 0x92, 0x29, 0x2D,
 0xC7, 0x0B, 0x8A, 0xE3, 0x0A, 0x8D, 0xC1, 0x7E, 0x21, 0xD5, 0x4C, 0x24, 0xB7, 0x2E, 0xB5, 0x3B,
 0x4F, 0xDC, 0xB9, 0xB5, 0x67, 0x2A, 0x95, 0xEE, 0xC2, 0x98, 0x2A, 0x0E, 0xC7, 0x8C, 0xCD, 0x5B,
 0x4D, 0x6D, 0xA6, 0x2D, 0xDC, 0x7F, 0xA3, 0xF8, 0x0A, 0xD6, 0x9B, 0xEC, 0x82, 0x5C, 0xDF, 0xB0,
 0xB0, 0x3E, 0x8D, 0xA6, 0x8A, 0x5C, 0xAB, 0xCA, 0x26, 0x60, 0x21, 0x0E, 0x33, 0x62, 0xDB, 0xB8,
 0x70, 0x97, 0x93, 0xAD, 0x79, 0x2B, 0x36, 0x0F, 0x4C, 0x7E, 0xDD, 0xA6, 0xD4, 0xAD, 0x04, 0x45,
 0xE1, 0x75, 0xFA, 0xD6, 0x6D, 0x47, 0x8C, 0x2C, 0x34, 0x79, 0x7B, 0xC4, 0xE9, 0x56, 0xA4, 0x50,
 0x54, 0x6D, 0x70, 0xC7, 0xDB, 0xC4, 0xCC, 0x64, 0x60, 0x07, 0x36, 0x6A, 0x3D, 0x9B, 0x2B, 0x52,
 0x0D, 0x4E, 0x95, 0x7B, 0x89, 0x06, 0xA7, 0xC9, 0x6D, 0x4F, 0x03, 0x76, 0x43, 0x91, 0x7A, 0xCB,
 0x91, 0xB8, 0xDE, 0x65, 0x58, 0x0E, 0x0A, 0x82, 0xA1, 0xC9, 0x6E, 0x8C, 0x31, 0xD3, 0x77, 0x20,
 0x0D, 0x6C, 0xB2, 0x34, 0x88, 0x3D, 0x34, 0x1D, 0x6F, 0xEA, 0x65, 0xCE, 0xF1, 0xF3, 0xE2, 0x0A,
 0x04, 0x24, 0xCD, 0xA1, 0x99, 0xBA, 0x3A, 0x63, 0x72, 0xAA, 0xE4, 0x27, 0x73, 0xF4, 0xE0, 0xDE,
 0xA3, 0x87, 0x0F, 0x7B, 0xDF, 0x3D, 0x70, 0xC7, 0xC1, 0x42, 0xFE, 0xFD, 0x8B, 0xB8, 0x98, 0x25,
 0xEE, 0x88, 0x82, 0x3C, 0x4A, 0x29, 0xE8, 0x19, 0x0C, 0x4E, 0x39, 0xD3, 0x8C, 0x20, 0xA7, 0x20,
 0x49, 0x8E, 0x6C, 0xB2, 0xB6, 0xEA, 0xC4, 0x8B, 0x86, 0x04, 0x50, 0x2E, 0xC6, 0xC8, 0xD7, 0x0C,
 0xE1, 0xC3, 0x44, 0xE7, 0xC6, 0xFD, 0xD6, 0xE4, 0x35, 0x66, 0xEC, 0x5D, 0x65, 0x35, 0xE0, 0x4A,
 0xC9, 0x02, 0x24, 0x47, 0x61, 0x3B, 0x8F, 0x21, 0x90, 0x71, 0x72, 0x76, 0x69, 0x2A, 0x67, 0x4C,
 0x2C, 0x9F, 0xB4, 0xBE, 0x72, 0xA5, 0x44, 0x4C, 0x3D, 0xF1, 0xD1, 0x1C, 0x33, 0xF7, 0x97, 0x3F,
 0xE6, 0xB3, 0xC9, 0x22, 0x11, 0x53, 0x9A, 0xA3, 0x37, 0x98, 0x67, 0x4E, 0x40, 0x59, 0x6B, 0xD6,
 0x35, 0x2E, 0xB2, 0x98, 0xA5, 0xE6, 0x37, 0x23, 0x11, 0xE5, 0xE6, 0x75, 0x1D, 0x71, 0xB7, 0x29,
 0x11, 0x88, 0xB3, 0xF3, 0x16, 0xDC, 0xC1, 0x96, 0xC8, 0x09, 0xC1, 0xB4, 0xAD, 0x96, 0x39, 0xFA,
 0xF9, 0xF7, 0xEF, 0x9F, 0xD4, 0xDA, 0xCD, 0xEE, 0xF9, 0x55, 0xEB, 0xAC, 0xD7, 0x3D, 0x1E, 0x9C,
 0x8A, 0x21, 0x9B, 0xF3, 0x6A, 0x9A, 0xA3, 0x5F, 0x19, 0x2F, 0xA8, 0x2F, 0xCD, 0xAB, 0x56, 0xBB,
 0xD9, 0xDC, 0x9E, 0xD7, 0x23, 0x73, 0xF4, 0x96, 0xB3, 0x6A, 0x9F, 0x03, 0xAB, 0x66, 0x7B, 0x07,
 0xB1, 0xCE, 0xCD, 0x11, 0xE7, 0x04, 0x4C, 0xAE, 0x1E, 0xF6, 0xCE, 0xB7, 0x67, 0xF4, 0x10, 0x64,
 0x7A, 0x07, 0x9C, 0xCE, 0x41, 0xBB, 0xDE, 0x2E, 0xCA, 0xF5, 0xCC, 0x11, 0xE3, 0xD3, 0xEB, 0x36,
 0xAF, 0xBA, 0xE7, 0x3B, 0xF0, 0x39, 0x33, 0x65, 0xA7, 0xC3, 0xDC, 0x3F, 0x3A, 0x32, 0x47, 0x17,
 0x3F, 0x3C, 0xAF, 0x75, 0x41, 0xC6, 0xF6, 0xA3, 0xDE, 0xF6, 0xBC, 0xBB, 0xE0, 0x17, 0x4C, 0xC8,
 0x4E, 0x1B, 0x18, 0x75, 0x77, 0x10, 0xB2, 0x63, 0x8E, 0x5E, 0x70, 0x4E, 0xC0, 0xE5, 0xAA, 0xF5,
 0x70, 0x07, 0x91, 0xC0, 0xBD, 0x7E, 0xE6, 0x9C, 0xC0, 0xBF, 0x98, 0x7B, 0x55, 0xE4, 0x04, 0xB9,
 0x97, 0x9B, 0xA6, 0x20, 0xE6, 0xD7, 0x33, 0x59, 0xEA, 0x74, 0x51, 0x4A, 0xF8, 0x3B, 0x84, 0x8E,
 0x80, 0x5E, 0x6F, 0x9C, 0x10, 0x24, 0x1D, 0xA8, 0x24, 0x0E, 0xAA, 0xE5, 0x02, 0x45, 0x92, 0xF8,
 0x6A, 0xAB, 0x39, 0xEA, 0x96, 0x28, 0xC0, 0x49, 0xD5, 0x84, 0xCA, 0x69, 0x53, 0xF2, 0x9B, 0xAC,
 0x3F, 0x64, 0xA8, 0xB3, 0xFB, 0x79, 0xC0, 0x43, 0x3B, 0xA6, 0x12, 0xD5, 0x5B, 0x25, 0x1B, 0x8D,
 0xAC, 0xE8, 0xCA, 0x1C, 0xF5, 0x3A, 0x65, 0xD6, 0xDE, 0x01, 0x8C, 0x31, 0xEF, 0x3D, 0x5D, 0x1C,
 0x04, 0x1B, 0xE3, 0x91, 0x90, 0x9A, 0xA3, 0xA7, 0xF1, 0xF1, 0x2E, 0xA8, 0xD4, 0xCB, 0x34, 0xE5,
 0xB4, 0x39, 0xB0, 0x28, 0xE2, 0x08, 0x64, 0xEA, 0x1D, 0x09, 0x4D, 0x82, 0xCC, 0xE7, 0x05, 0xE6,
 0x36, 0x71, 0x61, 0xED, 0x80, 0x8F, 0x02, 0xBA, 0x31, 0x2A, 0x11, 0x21, 0x24, 0x35, 0x79, 0x74,
 0x30, 0x44, 0x62, 0x51, 0xBE, 0x02, 0x3C, 0x02, 0x44, 0x43, 0x9F, 0xDF, 0xE5, 0xB8, 0x31, 0x22,
 0x09, 0x29, 0x54, 0xC3, 0xF8, 0x78, 0x27, 0x54, 0x76, 0x49, 0x5F, 0x8A, 0x38, 0x12, 0x97, 0x28,
 0x85, 0x75, 0x6F, 0x09, 0x97, 0x32, 0x69, 0x77, 0xC2, 0x65, 0x86, 0xFC, 0xC5, 0x56, 0xE9, 0x2B,
 0xA6, 0x04, 0x54, 0xA2, 0xC3, 0x83, 0x85, 0x4A, 0x22, 0xCC, 0x57, 0x10, 0x2B, 0xB0, 0xFE, 0xF6,
 0x48, 0xB0, 0x79, 0xC7, 0x2F, 0xE9, 0xCC, 0xD1, 0x33, 0x5C, 0x7F, 0xCD, 0x8E, 0x76, 0x81, 0xE3,
 0x49, 0x48, 0xBD, 0x1D, 0x00, 0x89, 0x64, 0x11, 0x70, 0x34, 0x25, 0x1A, 0xE7, 0xB7, 0x84, 0xC6,
 0xF9, 0x2D, 0xA2, 0x81, 0xF0, 0x7B, 0x07, 0x2F, 0xB1, 0xB3, 0x31, 0x1C, 0x11, 0xA1, 0x39, 0xBA,
 0xBC, 0x5A, 0x78, 0x01, 0xBB, 0x5B, 0xF8, 0x25, 0xFB, 0xBE, 0x53, 0x90, 0x9C, 0xED, 0x80, 0x49,
 0x2C, 0x90, 0x8C, 0x91, 0x33, 0x89, 0xCA, 0xD9, 0x2D, 0xA1, 0x52, 0x26, 0xEB, 0x2E, 0xA8, 0x4C,
 0x11, 0x71, 0x2D, 0x4C, 0x1C, 0x76, 0xE7, 0xE2, 0xA6, 0xC0, 0x28, 0xB4, 0xE6, 0xE8, 0xFB, 0xE4,
 0xCB, 0x2E, 0xC0, 0x34, 0x77, 0xC0, 0x45, 0x95, 0x27, 0x1D, 0x2F, 0x67, 0xB0, 0x58, 0xBE, 0x25,
 0x6C, 0x5A, 0xAD, 0xDB, 0xAC, 0x2A, 0x0B, 0x6C, 0x11, 0xE4, 0xBC, 0xC7, 0x93, 0x09, 0x2C, 0x83,
 0x36, 0x2F, 0x2D, 0x29, 0x72, 0xA8, 0x2F, 0xE2, 0xBB, 0x71, 0xC9, 0xBF, 0x6F, 0xBC, 0x87, 0x91,
 0x61, 0xF7, 0xB9, 0x36, 0x32, 0x9A, 0xFA, 0xB5, 0xF0, 0x6B, 0x2F, 0x96, 0x73, 0xDB, 0x5D, 0x0D,
 0x60, 0x82, 0xA7, 0x7C, 0x53, 0x7D, 0x6B, 0x1E, 0x6D, 0xF0, 0x6C, 0x1F, 0x5D, 0xF3, 0xC7, 0x10,
 0x77, 0x59, 0x48, 0xBF, 0xC1, 0xB6, 0xF1, 0x0B, 0x71, 0xB7, 0x57, 0xA6, 0xCB, 0x04, 0xC1, 0xD8,
 0xDD, 0x8D, 0xCB, 0x19, 0x2C, 0x91, 0xE0, 0x60, 0x37, 0x26, 0x3D, 0xF0, 0x24, 0xBC, 0x20, 0xE8,
 0x4B, 0x58, 0xC4, 0xA3, 0xD5, 0x78, 0xF3, 0x82, 0xB2, 0x1A, 0x43, 0x5D, 0xFE, 0xED, 0xA9, 0x71,
 0xC9, 0x6F, 0x03, 0xDB, 0x38, 0x5D, 0x89, 0x2B, 0xD4, 0x55, 0x1C, 0x5D, 0x24, 0x2A, 0x29, 0xA7,
 0xB9, 0xB6, 0x27, 0xAA, 0x0F, 0xA0, 0xAA, 0xFB, 0xA2, 0x1A, 0xF5, 0x22, 0x01, 0xF9, 0x05, 0x3D,
 0x53, 0xD1, 0xB6, 0x9A, 0x8E, 0xB7, 0xD8, 0x8A, 0x59, 0xAB, 0xCD, 0xDB, 0x30, 0x6B, 0x05, 0x30,
 0xD9, 0x4B, 0x76, 0x87, 0xA0, 0x6D, 0x00, 0x5E, 0x7B, 0x01, 0x8A, 0xCD, 0x7A, 0x18, 0xA0, 0xB8,
 0xBE, 0x87, 0x06, 0x0A, 0xBC, 0xE5, 0x3D, 0xAB, 0xA3, 0xDB, 0x04, 0x15, 0x27, 0x34, 0x47, 0xAF,
 0x90, 0x1B, 0x42, 0x91, 0xD9, 0x17, 0x60, 0xF1, 0xC4, 0x07, 0x0B, 0x2F, 0xA9, 0xF7, 0xA1, 0xA1,
 0x03, 0x41, 0xE6, 0x9E, 0xBD, 0xF9, 0x72, 0x47, 0xD2, 0x89, 0x94, 0xF8, 0x0A, 0x8E, 0x36, 0x6E,
 0x0C, 0x22, 0x0E, 0xB7, 0xDC, 0x11, 0x88, 0xA5, 0xD4, 0xF6, 0xCD, 0xC0, 0xDB, 0xD0, 0x75, 0xAF,
 0x77, 0xE9, 0x04, 0x2E, 0x1C, 0x2F, 0xB4, 0xB7, 0xE7, 0x00, 0x6D, 0xC0, 0x8F, 0x93, 0x09, 0xB1,
 0xB6, 0x6F, 0x24, 0xA0, 0x09, 0x78, 0xE1, 0xCD, 0x2B, 0xD2, 0xDF, 0x72, 0xE1, 0xC5, 0xD6, 0x16,
 0x2B, 0x39, 0x0B, 0x50, 0xBC, 0xBC, 0xD8, 0x6B, 0xE1, 0x85, 0x39, 0x0F, 0x94, 0x19, 0x98, 0xB6,
 0x87, 0x4E, 0x0A, 0x20, 0xC4, 0x7B, 0xEE, 0x3C, 0xDB, 0x80, 0x25, 0x28, 0xE3, 0x8C, 0x1E, 0x2D,
 0xBF, 0x0F, 0xB5, 0xBE, 0x4B, 0x24, 0x4A, 0xAF, 0xEE, 0x5A, 0x67, 0x9D, 0x5E, 0xBC, 0xBC, 0xEB,
 0xB4, 0x3F, 0xEF, 0x02, 0x8F, 0x31, 0xBF, 0x5D, 0x7C, 0xDA, 0xDB, 0x40, 0x03, 0xD9, 0xE8, 0x35,
 0xBB, 0xCE, 0xB0, 0x41, 0xC2, 0xDE, 0x3D, 0x90, 0xDA, 0x87, 0x8B, 0xA4, 0xF6, 0x17, 0x10, 0x4A,
 0xD3, 0x2D, 0x32, 0xDE, 0x94, 0x65, 0xBC, 0xEF, 0x2F, 0xF6, 0x83, 0xD0, 0xF4, 0x60, 0xA9, 0x6E,
 0x7A, 0xD0, 0x54, 0x67, 0x88, 0x9B, 0xAD, 0x62, 0x98, 0xB6, 0xEC, 0x60, 0x25, 0xA1, 0xD8, 0xCB,
 0xDA, 0x25, 0xC9, 0xB5, 0xAE, 0x76, 0xC9, 0x72, 0x91, 0x18, 0xE9, 0x24, 0xD7, 0x4B, 0xAE, 0x8A,
 0x9C, 0x7D, 0xDE, 0xCB, 0xBA, 0xDD, 0x32, 0x69, 0x77, 0x09, 0x1A, 0x1F, 0xAD, 0xDE, 0x4F, 0xE7,
 0x68, 0x63, 0x30, 0x24, 0x1D, 0x60, 0xF1, 0xEA, 0xC9, 0x3E, 0xDB, 0x85, 0x68, 0xDE, 0xC3, 0xC4,
 0x51, 0xAC, 0xF5, 0xA1, 0x73, 0x9D, 0x83, 0xDD, 0xCD, 0x93, 0x1D, 0x23, 0x32, 0x47, 0x2F, 0xB1,
 0x1B, 0x18, 0x17, 0x9E, 0x2F, 0xDF, 0xFD, 0xB4, 0x17, 0xD4, 0xF8, 0xCC, 0x87, 0x81, 0x4C, 0x28,
 0x7D, 0x68, 0xBC, 0x66, 0x73, 0xE2, 0xFB, 0x9E, 0xBF, 0x31, 0x64, 0x92, 0x0E, 0x96, 0x15, 0xF5,
 0x57, 0xFC, 0x68, 0x2F, 0x70, 0x45, 0xB3, 0x1E, 0x06, 0xB1, 0x58, 0xE7, 0x43, 0x83, 0xB6, 0x9C,
 0x38, 0x64, 0xB1, 0x31, 0x64, 0x9C, 0xCA, 0x1C, 0xBD, 0xAB, 0x3F, 0x87, 0x7F, 0xF7, 0x02, 0x97,
 0x98, 0xF1, 0x30, 0x60, 0x49, 0x6D, 0x0F, 0x0D, 0xD5, 0x78, 0xB1, 0x79, 0x3A, 0x04, 0x1A, 0x73,
 0xF4, 0xF4, 0xA7, 0xFD, 0xF4, 0x7E, 0x6C, 0xB2, 0x8A, 0x08, 0xED, 0x84, 0x07, 0x57, 0xEA, 0xD0,
 0x68, 0xAC, 0xB6, 0x40, 0x63, 0xC5, 0x04, 0xFF, 0x6D, 0x4F, 0x68, 0xAC, 0xAA, 0xA3, 0xF1, 0x99,
 0xE3, 0x65, 0xF5, 0x25, 0xE0, 0xC3, 0x9F, 0xC5, 0x18, 0xA3, 0xCD, 0xCB, 0x51, 0x44, 0xC8, 0x6E,
 0x1A, 0x83, 0x23, 0xE3, 0x29, 0xDA, 0x4F, 0x41, 0x8A, 0xE7, 0xDD, 0x47, 0x08, 0x25, 0x4A, 0x1E,
 0x1A, 0xA7, 0x09, 0xB2, 0xF0, 0x7B, 0x1B, 0xD3, 0x6D, 0xAE, 0x2D, 0x2B, 0xB4, 0xE6, 0xE8, 0x39,
 0x7C, 0x31, 0x9E, 0xF1, 0x2F, 0xFB, 0x6A, 0xF9, 0xD4, 0xF9, 0xF7, 0x81, 0x5A, 0x4A, 0xDF, 0x2F,
 0x02, 0x38, 0x68, 0xB0, 0xBD, 0xA9, 0xBB, 0xD5, 0x23, 0x0D, 0x29, 0x72, 0x09, 0xDF, 0x1B, 0xF1,
 0x7D, 0xBF, 0x00, 0x26, 0x42, 0xEC, 0x0D, 0x43, 0x45, 0xEF, 0x7D, 0xC0, 0x18, 0x3D, 0x16, 0xC4,
 0x8B, 0xB4, 0x78, 0x15, 0x5E, 0x19, 0x52, 0xF2, 0xE1, 0x27, 0x7E, 0x4B, 0x0B, 0xA6, 0xF5, 0x80,
 0x12, 0xC7, 0x81, 0x85, 0x30, 0xA6, 0xC6, 0x5B, 0x76, 0x38, 0x38, 0x15, 0x03, 0xAA, 0x73, 0x91,
 0xCF, 0xDC, 0xB0, 0x97, 0x50, 0xA2, 0xB9, 0x39, 0x7A, 0xCB, 0x5E, 0x12, 0x08, 0xBC, 0xD8, 0xB7,
 0xCD, 0x99, 0x71, 0x23, 0x62, 0xD7, 0xF7, 0x40, 0xA8, 0x18, 0x24, 0xF9, 0xAE, 0x26, 0xD3, 0x88,
 0x8E, 0x94, 0xDF, 0x46, 0x97, 0x7C, 0xB0, 0xC1, 0xBC, 0xAC, 0x7C, 0x3A, 0x76, 0xD5, 0xC2, 0xCA,
 0xBF, 0xB8, 0x31, 0x38, 0x75, 0x91, 0xC6, 0xDC, 0x39, 0x28, 0x0C, 0xC4, 0xDB, 0x25, 0x73, 0x58,
 0xC5, 0xCF, 0x33, 0x71, 0x4B, 0x24, 0x8F, 0x69, 0xC6, 0x6A, 0x65, 0x1F, 0xDF, 0x94, 0xDB, 0x4C,
 0xD5, 0x82, 0x96, 0x3F, 0x88, 0x29, 0xEB, 0x21, 0x3B, 0x8C, 0xCD, 0xFF, 0x9F, 0x7F, 0x97, 0xF9,
 0x0C, 0x7B, 0xF7, 0x67, 0x22, 0x98, 0x69, 0x04, 0xBE, 0x35, 0x34, 0xF3, 0x9E, 0x8E, 0xCA, 0xD1,
 0xFC, 0x54, 0xA7, 0x7A, 0x66, 0xB0, 0xC6, 0xD6, 0x83, 0xC0, 0xF2, 0xC9, 0x82, 0x8E, 0xEE, 0xD8,
 0x9E, 0x15, 0xCE, 0xB1, 0x4B, 0x1B, 0xC8, 0xB6, 0x2F, 0x97, 0x70, 0xF0, 0x92, 0x04, 0x14, 0x83,
 0x15, 0x6A, 0x47, 0xCF, 0x7E, 0x7C, 0x75, 0x21, 0x9E, 0x12, 0x7B, 0xE9, 0x21, 0x1B, 0xDB, 0x47,
 0x27, 0xC6, 0x24, 0x74, 0x85, 0x9B, 0xD7, 0x30, 0x1B, 0x2B, 0xDE, 0xBB, 0xBA, 0x44, 0xBE, 0x31,
 0x46, 0x01, 0x7E, 0xE1, 0x05, 0xD4, 0x18, 0x1A, 0x31, 0x47, 0xC7, 0xB3, 0xF8, 0x7D, 0xBF, 0x0D,
 0xCF, 0x27, 0x53, 0xE2, 0xCA, 0x91, 0x42, 0xD9, 0x5F, 0x7D, 0x07, 0x86, 0xC6, 0x54, 0xDF, 0x1A,
 0x47, 0xFD, 0xF3, 0xD6, 0x11, 0x7B, 0x1C, 0x0F, 0x60, 0x80, 0x1F, 0x00, 0x02, 0x0C, 0x03, 0x20,
 0xC0, 0x87, 0x23, 0xF9, 0x78, 0x20, 0x76, 0x1A, 0xDC, 0xE4, 0x4C, 0x40, 0x26, 0x6D, 0xED, 0x48,
 0xE0, 0x74, 0xC4, 0x1E, 0x34, 0xBE, 0x89, 0x29, 0x83, 0x99, 0xB7, 0x2A, 0xA2, 0xF4, 0xF1, 0xDC,
 0x5B, 0xE2, 0x0C, 0x71, 0x4C, 0x2D, 0xBD, 0xB9, 0x74, 0xEA, 0xC8, 0xEB, 0x8F, 0x8E, 0xA3, 0x01,
 0xF1, 0x7B, 0xCC, 0x86, 0x06, 0xF5, 0x43, 0x9C, 0x66, 0x8B, 0xDD, 0x32, 0xAE, 0x91, 0x58, 0x85,
 0x8C, 0x27, 0xC8, 0x09, 0x32, 0x9C, 0xC3, 0x85, 0x8D, 0x28, 0x7E, 0xC7, 0x76, 0x0C, 0x61, 0x40,
 0x0D, 0x3B, 0x27, 0x62, 0xFB, 0xF0, 0x44, 0x9E, 0x79, 0x03, 0x7C, 0x29, 0x3E, 0x4E, 0x66, 0x55,
 0x7F, 0x06, 0x8A, 0xF4, 0xD7, 0xA1, 0xE1, 0x86, 0x10, 0xC2, 0x8F, 0xB9, 0x0A, 0x46, 0x3F, 0x75,
 0x96, 0x53, 0x3B, 0x90, 0x9D, 0xE4, 0x3B, 0xDB, 0xF9, 0x9C, 0xFC, 0x47, 0x32, 0x61, 0x13, 0x37,
 0xF8, 0x1B, 0xE4, 0x87, 0xC0, 0xE3, 0x28, 0xCA, 0xEE, 0x47, 0xC9, 0x8B, 0x79, 0x55, 0x22, 0x6E,
 0x87, 0x86, 0xEC, 0x83, 0xE5, 0xF9, 0xA5, 0x3C, 0x71, 0xF7, 0xEE, 0x32, 0xE6, 0x6B, 0x28, 0xC3,
 0xE0, 0x54, 0x72, 0xE2, 0x06, 0x4E, 0x28, 0x4F, 0x3F, 0xAF, 0xF3, 0xCE, 0xF0, 0x88, 0x98, 0x2B,
 0x1C, 0xEE, 0xC4, 0x92, 0xA7, 0x2C, 0xF0, 0xE0, 0x41, 0x9A, 0xDB, 0xDD, 0xA1, 0xA4, 0x4A, 0x34,
 0x11, 0xE3, 0x21, 0x32, 0x20, 0xF2, 0x40, 0x6D, 0xF9, 0x4C, 0xBC, 0x14, 0x89, 0x4C, 0x6A, 0x77,
 0x53, 0x86, 0x8F, 0x65, 0x9C, 0x30, 0x13, 0x11, 0x9B, 0x1B, 0x88, 0x5F, 0x33, 0x3C, 0x4E, 0x9E,
 0x7A, 0x15, 0xF2, 0x3D, 0xE6, 0x5E, 0x5F, 0xC3, 0xF2, 0xF2, 0xDB, 0x31, 0xD8, 0x9F, 0x39, 0x73,
 0xF2, 0x83, 0x1C, 0x9F, 0x4C, 0xA5, 0x72, 0x9C, 0xA6, 0x38, 0x32, 0xC5, 0x32, 0x72, 0xB3, 0x0F,
 0x9F, 0x00, 0x86, 0xB2, 0x9D, 0xEF, 0xE4, 0xF9, 0xFC, 0x8C, 0x39, 0xD9, 0x87, 0x4F, 0xBC, 0x3E,
 0xB0, 0x50, 0x82, 0xE8, 0x0E, 0x09, 0x8D, 0x62, 0x9C, 0xDD, 0x6A, 0xCC, 0x54, 0xE2, 0x22, 0xC0,
 0x61, 0x11, 0xAB, 0x4C, 0x01, 0xD7, 0x30, 0x14, 0x01, 0x55, 0x13, 0xF5, 0xE9, 0x29, 0xAF, 0x35,
 0x8C, 0xB9, 0x8C, 0x95, 0xF4, 0xEF, 0x77, 0x54, 0xE1, 0x6F, 0xA2, 0xF0, 0x89, 0x53, 0x99, 0x8A,
 0x27, 0xF3, 0xE3, 0xC8, 0x62, 0xCC, 0xD5, 0x13, 0x87, 0x91, 0xAF, 0x2B, 0x89, 0xFC, 0x3C, 0x31,
 0xAB, 0x05, 0x39, 0x4C, 0xF1, 0xF8, 0x7E, 0x46, 0x54, 0xD5, 0xD5, 0x41, 0xEE, 0x96, 0xA1, 0xBE,
 0x80, 0x64, 0x0C, 0xA9, 0xF0, 0x63, 0x8A, 0x0F, 0xDF, 0xB0, 0x8F, 0x99, 0x88, 0xDF, 0xC4, 0xE5,
 0xFD, 0xBA, 0xE7, 0x62, 0x3D, 0x77, 0xD5, 0xD9, 0x75, 0x3C, 0x45, 0x29, 0xCE, 0x32, 0x0D, 0xC7,
 0x73, 0x42, 0x35, 0x0C, 0x8F, 0x20, 0x0D, 0xEB, 0x78, 0xC9, 0x06, 0x2D, 0x21, 0xF0, 0x31, 0x0D,
 0x7D, 0x57, 0x8D, 0x26, 0x91, 0x91, 0xFE, 0x0E, 0xB1, 0x7F, 0x0D, 0x8C, 0x3E, 0xDC, 0xFF, 0x14,
 0xE5, 0xF7, 0x9B, 0x53, 0xFE, 0x6C, 0x8E, 0xE7, 0x3C, 0x86, 0x0A, 0x30, 0xBC, 0xFF, 0x89, 0x43,
 0x7D, 0xF3, 0x00, 0xA6, 0x84, 0x2F, 0x7C, 0xE2, 0x9B, 0x0F, 0x82, 0xC5, 0x84, 0xBD, 0x3E, 0xBB,
 0xC6, 0x59, 0x44, 0xB8, 0x35, 0xE8, 0x0C, 0xBB, 0x35, 0x1F, 0x07, 0x0B, 0x60, 0x8F, 0x93, 0x44,
 0x16, 0xCD, 0xE8, 0x39, 0x18, 0x4A, 0xCD, 0xB4, 0xF6, 0xC1, 0xC7, 0x40, 0x07, 0x02, 0x50, 0xCF,
 0xB8, 0xFF, 0x89, 0xB3, 0xB8, 0x31, 0x26, 0x10, 0xCD, 0xC1, 0x0C, 0xDB, 0x27, 0x50, 0x77, 0x10,
 0x65, 0x4F, 0xA6, 0xDF, 0xFF, 0x14, 0xB1, 0x6A, 0x88, 0x9F, 0x6E, 0x3E, 0xC4, 0x1E, 0x12, 0x17,
 0x83, 0xA8, 0x86, 0xF1, 0x13, 0x0D, 0xCE, 0xEB, 0x2D, 0x47, 0xC1, 0xF3, 0x9F, 0x38, 0x4E, 0xED,
 0x48, 0xBC, 0x7E, 0x41, 0xE6, 0xE8, 0x06, 0x34, 0x9D, 0x97, 0x08, 0xC4, 0x56, 0x93, 0x3B, 0xCF,
 0x3B, 0x9E, 0x6B, 0x39, 0xC4, 0xFA, 0xC8, 0x12, 0xF3, 0x71, 0x5A, 0x70, 0x11, 0xE9, 0x4E, 0x43,
 0xBC, 0x4E, 0xEB, 0xB5, 0x67, 0xE3, 0x8C, 0x9B, 0x1E, 0x33, 0x31, 0x4E, 0x4F, 0xC1, 0xCA, 0xC8,
 0x8E, 0x52, 0x92, 0xC0, 0x88, 0xBD, 0x77, 0x45, 0x98, 0x29, 0x65, 0x61, 0xA1, 0x8C, 0xD4, 0x45,
 0xD8, 0x2C, 0xA9, 0xD6, 0x91, 0xCA, 0x89, 0xDB, 0x0A, 0xF4, 0x8C, 0xD8, 0x16, 0x7F, 0x05, 0x9E,
 0x5B, 0x3B, 0xBE, 0x13, 0x9B, 0x61, 0x9D, 0x07, 0x9B, 0x40, 0x61, 0x90, 0x32, 0x51, 0x9E, 0x99,
 0xD2, 0x5D, 0xFD, 0x51, 0x92, 0x49, 0x72, 0x6C, 0x26, 0x3E, 0x4A, 0x4D, 0xE3, 0x05, 0x8D, 0xCF,
 0xFC, 0x07, 0x77, 0x9A, 0x3F, 0x4F, 0x44, 0x11, 0x54, 0x72, 0xD2, 0xB1, 0x62, 0x30, 0xE1, 0x81,
 0xEC, 0xBF, 0x1E, 0x51, 0x1B, 0x11, 0xE8, 0xAE, 0x2F, 0x1D, 0xCC, 0x0E, 0x9F, 0x5E, 0xFF, 0x00,
 0xC5, 0x5B, 0xB4, 0x20, 0x5C, 0x9A, 0x84, 0xE0, 0x22, 0x6E, 0xFF, 0x4A, 0x29, 0x93, 0x56, 0x51,
 0xE1, 0xC1, 0xDB, 0x77, 0x91, 0x71, 0x8A, 0x38, 0xC4, 0x9D, 0x7E, 0x8A, 0x94, 0x71, 0x2D, 0xA7,
 0x4D, 0xF5, 0xF7, 0x0A, 0xBD, 0x9A, 0xED, 0x8A, 0xE8, 0x95, 0x96, 0x5E, 0xA1, 0xE6, 0xAE, 0x5C,
 0x4E, 0xAC, 0x36, 0xB7, 0x47, 0x8A, 0xB1, 0x03, 0xEA, 0x2D, 0xC4, 0x1A, 0x23, 0xE3, 0xE6, 0x2B,
 0xE2, 0xDA, 0xDE, 0xAA, 0xC1, 0xCE, 0xD7, 0x64, 0x91, 0x54, 0x15, 0x6D, 0x10, 0x17, 0x0C, 0xF8,
 0xE2, 0x97, 0x57, 0x2F, 0x59, 0xD2, 0x51, 0xD7, 0x2A, 0x47, 0xE9, 0x0E, 0x87, 0xBF, 0xEB, 0x5C,
 0x3B, 0x03, 0x83, 0xAD, 0x01, 0x4D, 0xB3, 0x48, 0x36, 0x71, 0x63, 0xC9, 0x62, 0x81, 0x1D, 0x7E,
 0x10, 0x73, 0xB2, 0xD2, 0x93, 0x02, 0xF8, 0xB8, 0x54, 0x16, 0x6F, 0x91, 0x15, 0x05, 0x22, 0xF1,
 0x09, 0xA5, 0xE0, 0xB0, 0x86, 0x70, 0xE5, 0x80, 0x65, 0x19, 0xB9, 0xCE, 0xBB, 0x63, 0xA8, 0xE0,
 0xE7, 0x04, 0x7D, 0x62, 0x26, 0x19, 0x65, 0x69, 0xE1, 0x95, 0x4C, 0x89, 0x16, 0x10, 0x99, 0xF8,
 0xF1, 0x7B, 0x6B, 0x0C, 0xC9, 0xF1, 0x19, 0x78, 0x7E, 0xC3, 0x05, 0x0D, 0x8E, 0x6F, 0x8A, 0xD4,
 0x11, 0xE6, 0x4A, 0x80, 0xAC, 0x2A, 0x04, 0x4F, 0x43, 0x7A, 0x6E, 0x29, 0xFB, 0xE8, 0xD9, 0xA9,
 0xDE, 0x2B, 0xAE, 0xDD, 0xB2, 0x36, 0x2D, 0xCF, 0xB0, 0xC3, 0x75, 0xD3, 0x8A, 0x3E, 0x25, 0xC5,
 0x20, 0x49, 0x30, 0x6B, 0xC2, 0x66, 0xDA, 0x14, 0xC5, 0x2F, 0xA2, 0x01, 0x91, 0xEC, 0x6A, 0x40,
 0xE4, 0xC8, 0x9E, 0xEE, 0xE2, 0x32, 0xED, 0x42, 0x06, 0x72, 0x99, 0xC5, 0x0C, 0xF6, 0xD6, 0x8F,
 0x19, 0x2B, 0xD0, 0xD2, 0x09, 0xAA, 0x14, 0x0A, 0x6D, 0x06, 0x2C, 0xAC, 0x18, 0x62, 0x86, 0x48,
 0xDA, 0x6C, 0xB7, 0x99, 0xAE, 0x0E, 0x17, 0x21, 0x58, 0x69, 0x1E, 0xF9, 0xA4, 0xF8, 0x8D, 0xB5,
 0x6C, 0x71, 0xF0, 0x40, 0x0B, 0x57, 0x14, 0xD4, 0x70, 0x5A, 0xC9, 0x04, 0xB2, 0xDF, 0x2B, 0x21,
 0x50, 0xEE, 0xBA, 0xE0, 0xB4, 0xF0, 0xD3, 0xBA, 0xD8, 0x1A, 0x23, 0xC3, 0xB8, 0xE3, 0x18, 0x73,
 0x46, 0x24, 0xBB, 0xA2, 0x04, 0xF1, 0xF5, 0xEE, 0x34, 0x0B, 0xF9, 0x5A, 0x57, 0x7A, 0xA3, 0xA0,
 0x15, 0xDD, 0xB7, 0x96, 0xE8, 0x83, 0x8B, 0x95, 0xC7, 0xAA, 0xF2, 0x51, 0x97, 0x5D, 0x42, 0xA1,
 0xDE, 0x65, 0x27, 0xD4, 0xC7, 0x15, 0xD5, 0xC7, 0x52, 0x7D, 0x46, 0x90, 0x34, 0x84, 0xE5, 0x2D,
 0x7F, 0xEC, 0x8C, 0xBF, 0x3D, 0x4D, 0x34, 0x5B, 0x8D, 0x0B, 0xE5, 0x94, 0xAD, 0xB8, 0xA2, 0x5E,
 0x31, 0x41, 0xEA, 0x9E, 0x62, 0xA1, 0xD6, 0x6A, 0x5C, 0x4D, 0xAD, 0xA8, 0x95, 0x67, 0x04, 0x89,
 0x5A, 0xFA, 0x86, 0x3F, 0x52, 0x25, 0xDE, 0x42, 0xE6, 0xFF, 0xA7, 0x4B, 0xFC, 0xCE, 0x94, 0x58,
 0x58, 0xB1, 0xFF, 0x5A, 0x5A, 0xCA, 0xC4, 0x30, 0x45, 0xC9, 0x78, 0xC9, 0x50, 0x4A, 0x1A, 0x8F,
 0x54, 0xA8, 0x63, 0x39, 0x0A, 0xA9, 0xA3, 0x41, 0xA2, 0x06, 0xC6, 0x5F, 0x2B, 0x19, 0x2B, 0x1E,
 0x9D, 0x04, 0x42, 0xC2, 0x40, 0x34, 0xE0, 0x23, 0xE3, 0x2C, 0xBB, 0xD4, 0x14, 0x8D, 0x90, 0x50,
 0x36, 0xD3, 0xFE, 0xA8, 0x03, 0x62, 0x95, 0x52, 0x63, 0xE2, 0x00, 0x11, 0xF4, 0x79, 0x62, 0x96,
 0x8A, 0x82, 0x1C, 0xEC, 0xD3, 0x9A, 0xF9, 0x93, 0x83, 0xD9, 0xF2, 0x41, 0xDE, 0x14, 0x7E, 0xF1,
 0xC3, 0x73, 0xC3, 0xF3, 0x0D, 0xF1, 0x16, 0x4D, 0x3F, 0x7E, 0x6B, 0x8E, 0x21, 0x5F, 0x31, 0xC7,
 0x17, 0x69, 0xC4, 0x9D, 0x1A, 0x74, 0x46, 0x02, 0xE8, 0x59, 0xD9, 0x93, 0xE0, 0xF8, 0xAE, 0x19,
 0xBF, 0x45, 0xAE, 0x54, 0x3D, 0xD1, 0xA4, 0x7E, 0x17, 0x2B, 0x92, 0x31, 0xA7, 0xA0, 0x49, 0x6C,
 0x79, 0x57, 0xEA, 0xB8, 0x96, 0x58, 0x8A, 0x96, 0x85, 0x1B, 0x98, 0x30, 0x3E, 0xFD, 0xC5, 0x5A,
 0x51, 0xAF, 0x40, 0xA9, 0x21, 0x63, 0xB2, 0xC4, 0x96, 0x89, 0xAE, 0x6B, 0xD6, 0xD4, 0xAD, 0xBD,
 0x0B, 0x10, 0x65, 0x5B, 0x49, 0xDA, 0x6C, 0x9E, 0x8F, 0x8A, 0xB0, 0xB8, 0xA8, 0x72, 0xE2, 0x33,
 0x38, 0x8D, 0x36, 0x2C, 0xC5, 0x37, 0xF1, 0x52, 0xAE, 0xC1, 0xA9, 0xF8, 0x9F, 0x0A, 0xFF, 0x0B,
 0x9B, 0xFC, 0x8E, 0x51, 0xC1, 0x70, 0x00, 0x00
};

注意:这里就是整个Web页面的Gzip字符流,包括:

  • index_ov2640_html_gz

对应这个web页面
在这里插入图片描述
对应摄像头模块 ov2640 的控制页面

这里感谢群里网友把它转成我们可以看得懂的代码(html + css + JS):

<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width,initial-scale=1">
        <title>ESP32 OV2460</title>
        <style>
            body {
                font-family: Arial,Helvetica,sans-serif;
                background: #181818;
                color: #EFEFEF;
                font-size: 16px
            }

            h2 {
                font-size: 18px
            }

            section.main {
                display: flex
            }

            #menu,section.main {
                flex-direction: column
            }

            #menu {
                display: none;
                flex-wrap: nowrap;
                min-width: 340px;
                background: #363636;
                padding: 8px;
                border-radius: 4px;
                margin-top: -10px;
                margin-right: 10px;
            }

            #content {
                display: flex;
                flex-wrap: wrap;
                align-items: stretch
            }

            figure {
                padding: 0px;
                margin: 0;
                -webkit-margin-before: 0;
                margin-block-start: 0;
                -webkit-margin-after: 0;
                margin-block-end: 0;
                -webkit-margin-start: 0;
                margin-inline-start: 0;
                -webkit-margin-end: 0;
                margin-inline-end: 0
            }

            figure img {
                display: block;
                width: 100%;
                height: auto;
                border-radius: 4px;
                margin-top: 8px;
            }

            @media (min-width: 800px) and (orientation:landscape) {
                #content {
                    display:flex;
                    flex-wrap: nowrap;
                    align-items: stretch
                }

                figure img {
                    display: block;
                    max-width: 100%;
                    max-height: calc(100vh - 40px);
                    width: auto;
                    height: auto
                }

                figure {
                    padding: 0 0 0 0px;
                    margin: 0;
                    -webkit-margin-before: 0;
                    margin-block-start: 0;
                    -webkit-margin-after: 0;
                    margin-block-end: 0;
                    -webkit-margin-start: 0;
                    margin-inline-start: 0;
                    -webkit-margin-end: 0;
                    margin-inline-end: 0
                }
            }

            section#buttons {
                display: flex;
                flex-wrap: nowrap;
                justify-content: space-between
            }

            #nav-toggle {
                cursor: pointer;
                display: block
            }

            #nav-toggle-cb {
                outline: 0;
                opacity: 0;
                width: 0;
                height: 0
            }

            #nav-toggle-cb:checked+#menu {
                display: flex
            }

            .input-group {
                display: flex;
                flex-wrap: nowrap;
                line-height: 22px;
                margin: 5px 0
            }

            .input-group>label {
                display: inline-block;
                padding-right: 10px;
                min-width: 47%
            }

            .input-group input,.input-group select {
                flex-grow: 1
            }

            .range-max,.range-min {
                display: inline-block;
                padding: 0 5px
            }

            button {
                display: block;
                margin: 5px;
                padding: 0 12px;
                border: 0;
                line-height: 28px;
                cursor: pointer;
                color: #fff;
                background: #ff3034;
                border-radius: 5px;
                font-size: 16px;
                outline: 0
            }

            button:hover {
                background: #ff494d
            }

            button:active {
                background: #f21c21
            }

            button.disabled {
                cursor: default;
                background: #a0a0a0
            }

            input[type=range] {
                -webkit-appearance: none;
                width: 100%;
                height: 22px;
                background: #363636;
                cursor: pointer;
                margin: 0
            }

            input[type=range]:focus {
                outline: 0
            }

            input[type=range]::-webkit-slider-runnable-track {
                width: 100%;
                height: 2px;
                cursor: pointer;
                background: #EFEFEF;
                border-radius: 0;
                border: 0 solid #EFEFEF
            }

            input[type=range]::-webkit-slider-thumb {
                border: 1px solid rgba(0,0,30,0);
                height: 22px;
                width: 22px;
                border-radius: 50px;
                background: #ff3034;
                cursor: pointer;
                -webkit-appearance: none;
                margin-top: -11.5px
            }

            input[type=range]:focus::-webkit-slider-runnable-track {
                background: #EFEFEF
            }

            input[type=range]::-moz-range-track {
                width: 100%;
                height: 2px;
                cursor: pointer;
                background: #EFEFEF;
                border-radius: 0;
                border: 0 solid #EFEFEF
            }

            input[type=range]::-moz-range-thumb {
                border: 1px solid rgba(0,0,30,0);
                height: 22px;
                width: 22px;
                border-radius: 50px;
                background: #ff3034;
                cursor: pointer
            }

            input[type=range]::-ms-track {
                width: 100%;
                height: 2px;
                cursor: pointer;
                background: 0 0;
                border-color: transparent;
                color: transparent
            }

            input[type=range]::-ms-fill-lower {
                background: #EFEFEF;
                border: 0 solid #EFEFEF;
                border-radius: 0
            }

            input[type=range]::-ms-fill-upper {
                background: #EFEFEF;
                border: 0 solid #EFEFEF;
                border-radius: 0
            }

            input[type=range]::-ms-thumb {
                border: 1px solid rgba(0,0,30,0);
                height: 22px;
                width: 22px;
                border-radius: 50px;
                background: #ff3034;
                cursor: pointer;
                height: 2px
            }

            input[type=range]:focus::-ms-fill-lower {
                background: #EFEFEF
            }

            input[type=range]:focus::-ms-fill-upper {
                background: #363636
            }

            .switch {
                display: block;
                position: relative;
                line-height: 22px;
                font-size: 16px;
                height: 22px
            }

            .switch input {
                outline: 0;
                opacity: 0;
                width: 0;
                height: 0
            }

            .slider {
                width: 50px;
                height: 22px;
                border-radius: 22px;
                cursor: pointer;
                background-color: grey
            }

            .slider,.slider:before {
                display: inline-block;
                transition: .4s
            }

            .slider:before {
                position: relative;
                content: "";
                border-radius: 50%;
                height: 16px;
                width: 16px;
                left: 4px;
                top: 3px;
                background-color: #fff
            }

            input:checked+.slider {
                background-color: #ff3034
            }

            input:checked+.slider:before {
                -webkit-transform: translateX(26px);
                transform: translateX(26px)
            }

            select {
                border: 1px solid #363636;
                font-size: 14px;
                height: 22px;
                outline: 0;
                border-radius: 5px
            }

            .image-container {
                position: relative;
                min-width: 160px
            }

            .close {
                position: absolute;
                right: 5px;
                top: 5px;
                background: #ff3034;
                width: 16px;
                height: 16px;
                border-radius: 100px;
                color: #fff;
                text-align: center;
                line-height: 18px;
                cursor: pointer
            }

            .hidden {
                display: none
            }
        </style>
    </head>
    <body>
        <section class="main">
            <div id="logo">
                <label for="nav-toggle-cb" id="nav-toggle">&#9776;&nbsp;&nbsp;Toggle OV2640 settings</label>
            </div>
            <div id="content">
                <div id="sidebar">
                    <input type="checkbox" id="nav-toggle-cb" checked="checked">
                    <nav id="menu">
                        <div class="input-group" id="framesize-group">
                            <label for="framesize">Resolution</label>
                            <select id="framesize" class="default-action">
                                <option value="10">UXGA(1600x1200)</option>
                                <option value="9">SXGA(1280x1024)</option>
                                <option value="8">XGA(1024x768)</option>
                                <option value="7">SVGA(800x600)</option>
                                <option value="6">VGA(640x480)</option>
                                <option value="5" selected="selected">CIF(400x296)</option>
                                <option value="4">QVGA(320x240)</option>
                                <option value="3">HQVGA(240x176)</option>
                                <option value="0">QQVGA(160x120)</option>
                            </select>
                        </div>
                        <div class="input-group" id="quality-group">
                            <label for="quality">Quality</label>
                            <div class="range-min">10</div>
                            <input type="range" id="quality" min="10" max="63" value="10" class="default-action">
                            <div class="range-max">63</div>
                        </div>
                        <div class="input-group" id="brightness-group">
                            <label for="brightness">Brightness</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="brightness" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="contrast-group">
                            <label for="contrast">Contrast</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="contrast" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="saturation-group">
                            <label for="saturation">Saturation</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="saturation" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="special_effect-group">
                            <label for="special_effect">Special Effect</label>
                            <select id="special_effect" class="default-action">
                                <option value="0" selected="selected">No Effect</option>
                                <option value="1">Negative</option>
                                <option value="2">Grayscale</option>
                                <option value="3">Red Tint</option>
                                <option value="4">Green Tint</option>
                                <option value="5">Blue Tint</option>
                                <option value="6">Sepia</option>
                            </select>
                        </div>
                        <div class="input-group" id="awb-group">
                            <label for="awb">AWB</label>
                            <div class="switch">
                                <input id="awb" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="awb"></label>
                            </div>
                        </div>
                        <div class="input-group" id="awb_gain-group">
                            <label for="awb_gain">AWB Gain</label>
                            <div class="switch">
                                <input id="awb_gain" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="awb_gain"></label>
                            </div>
                        </div>
                        <div class="input-group" id="wb_mode-group">
                            <label for="wb_mode">WB Mode</label>
                            <select id="wb_mode" class="default-action">
                                <option value="0" selected="selected">Auto</option>
                                <option value="1">Sunny</option>
                                <option value="2">Cloudy</option>
                                <option value="3">Office</option>
                                <option value="4">Home</option>
                            </select>
                        </div>
                        <div class="input-group" id="aec-group">
                            <label for="aec">AEC SENSOR</label>
                            <div class="switch">
                                <input id="aec" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="aec"></label>
                            </div>
                        </div>
                        <div class="input-group" id="aec2-group">
                            <label for="aec2">AEC DSP</label>
                            <div class="switch">
                                <input id="aec2" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="aec2"></label>
                            </div>
                        </div>
                        <div class="input-group" id="ae_level-group">
                            <label for="ae_level">AE Level</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="ae_level" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="aec_value-group">
                            <label for="aec_value">Exposure</label>
                            <div class="range-min">0</div>
                            <input type="range" id="aec_value" min="0" max="1200" value="204" class="default-action">
                            <div class="range-max">1200</div>
                        </div>
                        <div class="input-group" id="agc-group">
                            <label for="agc">AGC</label>
                            <div class="switch">
                                <input id="agc" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="agc"></label>
                            </div>
                        </div>
                        <div class="input-group hidden" id="agc_gain-group">
                            <label for="agc_gain">Gain</label>
                            <div class="range-min">1x</div>
                            <input type="range" id="agc_gain" min="0" max="30" value="5" class="default-action">
                            <div class="range-max">31x</div>
                        </div>
                        <div class="input-group" id="gainceiling-group">
                            <label for="gainceiling">Gain Ceiling</label>
                            <div class="range-min">2x</div>
                            <input type="range" id="gainceiling" min="0" max="6" value="0" class="default-action">
                            <div class="range-max">128x</div>
                        </div>
                        <div class="input-group" id="bpc-group">
                            <label for="bpc">BPC</label>
                            <div class="switch">
                                <input id="bpc" type="checkbox" class="default-action">
                                <label class="slider" for="bpc"></label>
                            </div>
                        </div>
                        <div class="input-group" id="wpc-group">
                            <label for="wpc">WPC</label>
                            <div class="switch">
                                <input id="wpc" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="wpc"></label>
                            </div>
                        </div>
                        <div class="input-group" id="raw_gma-group">
                            <label for="raw_gma">Raw GMA</label>
                            <div class="switch">
                                <input id="raw_gma" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="raw_gma"></label>
                            </div>
                        </div>
                        <div class="input-group" id="lenc-group">
                            <label for="lenc">Lens Correction</label>
                            <div class="switch">
                                <input id="lenc" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="lenc"></label>
                            </div>
                        </div>
                        <div class="input-group" id="hmirror-group">
                            <label for="hmirror">H-Mirror</label>
                            <div class="switch">
                                <input id="hmirror" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="hmirror"></label>
                            </div>
                        </div>
                        <div class="input-group" id="vflip-group">
                            <label for="vflip">V-Flip</label>
                            <div class="switch">
                                <input id="vflip" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="vflip"></label>
                            </div>
                        </div>
                        <div class="input-group" id="dcw-group">
                            <label for="dcw">DCW (Downsize EN)</label>
                            <div class="switch">
                                <input id="dcw" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="dcw"></label>
                            </div>
                        </div>
                        <div class="input-group" id="colorbar-group">
                            <label for="colorbar">Color Bar</label>
                            <div class="switch">
                                <input id="colorbar" type="checkbox" class="default-action">
                                <label class="slider" for="colorbar"></label>
                            </div>
                        </div>
                        <div class="input-group" id="face_detect-group">
                            <label for="face_detect">Face Detection</label>
                            <div class="switch">
                                <input id="face_detect" type="checkbox" class="default-action">
                                <label class="slider" for="face_detect"></label>
                            </div>
                        </div>
                        <div class="input-group" id="face_recognize-group">
                            <label for="face_recognize">Face Recognition</label>
                            <div class="switch">
                                <input id="face_recognize" type="checkbox" class="default-action">
                                <label class="slider" for="face_recognize"></label>
                            </div>
                        </div>
                        <section id="buttons">
                            <button id="get-still">Get Still</button>
                            <button id="toggle-stream">Start Stream</button>
                            <button id="face_enroll" class="disabled" disabled="disabled">Enroll Face</button>
                        </section>
                    </nav>
                </div>
                <figure>
                    <div id="stream-container" class="image-container hidden">
                        <div class="close" id="close-stream">×</div>
                        <img id="stream" src="">
                    </div>
                </figure>
            </div>
        </section>
        <script>
document.addEventListener('DOMContentLoaded', function (event) {
  var baseHost = document.location.origin
  var streamUrl = baseHost + ':81'

  const hide = el => {
    el.classList.add('hidden')
  }
  const show = el => {
    el.classList.remove('hidden')
  }

  const disable = el => {
    el.classList.add('disabled')
    el.disabled = true
  }

  const enable = el => {
    el.classList.remove('disabled')
    el.disabled = false
  }

  const updateValue = (el, value, updateRemote) => {
    updateRemote = updateRemote == null ? true : updateRemote
    let initialValue
    if (el.type === 'checkbox') {
      initialValue = el.checked
      value = !!value
      el.checked = value
    } else {
      initialValue = el.value
      el.value = value
    }

    if (updateRemote && initialValue !== value) {
      updateConfig(el);
    } else if(!updateRemote){
      if(el.id === "aec"){
        value ? hide(exposure) : show(exposure)
      } else if(el.id === "agc"){
        if (value) {
          show(gainCeiling)
          hide(agcGain)
        } else {
          hide(gainCeiling)
          show(agcGain)
        }
      } else if(el.id === "awb_gain"){
        value ? show(wb) : hide(wb)
      } else if(el.id === "face_recognize"){
        value ? enable(enrollButton) : disable(enrollButton)
      }
    }
  }

  function updateConfig (el) {
    let value
    switch (el.type) {
      case 'checkbox':
        value = el.checked ? 1 : 0
        break
      case 'range':
      case 'select-one':
        value = el.value
        break
      case 'button':
      case 'submit':
        value = '1'
        break
      default:
        return
    }

    const query = `${baseHost}/control?var=${el.id}&val=${value}`

    fetch(query)
      .then(response => {
        console.log(`request to ${query} finished, status: ${response.status}`)
      })
  }

  document
    .querySelectorAll('.close')
    .forEach(el => {
      el.onclick = () => {
        hide(el.parentNode)
      }
    })

  // read initial values
  fetch(`${baseHost}/status`)
    .then(function (response) {
      return response.json()
    })
    .then(function (state) {
      document
        .querySelectorAll('.default-action')
        .forEach(el => {
          updateValue(el, state[el.id], false)
        })
    })

  const view = document.getElementById('stream')
  const viewContainer = document.getElementById('stream-container')
  const stillButton = document.getElementById('get-still')
  const streamButton = document.getElementById('toggle-stream')
  const enrollButton = document.getElementById('face_enroll')
  const closeButton = document.getElementById('close-stream')

  const stopStream = () => {
    window.stop();
    streamButton.innerHTML = 'Start Stream'
  }

  const startStream = () => {
    view.src = `${streamUrl}/stream`
    show(viewContainer)
    streamButton.innerHTML = 'Stop Stream'
  }

  // Attach actions to buttons
  stillButton.onclick = () => {
    stopStream()
    view.src = `${baseHost}/capture?_cb=${Date.now()}`
    show(viewContainer)
  }

  closeButton.onclick = () => {
    stopStream()
    hide(viewContainer)
  }

  streamButton.onclick = () => {
    const streamEnabled = streamButton.innerHTML === 'Stop Stream'
    if (streamEnabled) {
      stopStream()
    } else {
      startStream()
    }
  }

  enrollButton.onclick = () => {
    updateConfig(enrollButton)
  }

  // Attach default on change action
  document
    .querySelectorAll('.default-action')
    .forEach(el => {
      el.onchange = () => updateConfig(el)
    })

  // Custom actions
  // Gain
  const agc = document.getElementById('agc')
  const agcGain = document.getElementById('agc_gain-group')
  const gainCeiling = document.getElementById('gainceiling-group')
  agc.onchange = () => {
    updateConfig(agc)
    if (agc.checked) {
      show(gainCeiling)
      hide(agcGain)
    } else {
      hide(gainCeiling)
      show(agcGain)
    }
  }

  // Exposure
  const aec = document.getElementById('aec')
  const exposure = document.getElementById('aec_value-group')
  aec.onchange = () => {
    updateConfig(aec)
    aec.checked ? hide(exposure) : show(exposure)
  }

  // AWB
  const awb = document.getElementById('awb_gain')
  const wb = document.getElementById('wb_mode-group')
  awb.onchange = () => {
    updateConfig(awb)
    awb.checked ? show(wb) : hide(wb)
  }

  // Detection and framesize
  const detect = document.getElementById('face_detect')
  const recognize = document.getElementById('face_recognize')
  const framesize = document.getElementById('framesize')

  framesize.onchange = () => {
    updateConfig(framesize)
    if (framesize.value > 5) {
      updateValue(detect, false)
      updateValue(recognize, false)
    }
  }

  detect.onchange = () => {
    if (framesize.value > 5) {
      alert("Please select CIF or lower resolution before enabling this feature!");
      updateValue(detect, false)
      return;
    }
    updateConfig(detect)
    if (!detect.checked) {
      disable(enrollButton)
      updateValue(recognize, false)
    }
  }

  recognize.onchange = () => {
    if (framesize.value > 5) {
      alert("Please select CIF or lower resolution before enabling this feature!");
      updateValue(recognize, false)
      return;
    }
    updateConfig(recognize)
    if (recognize.checked) {
      enable(enrollButton)
      updateValue(detect, true)
    } else {
      disable(enrollButton)
    }
  }
})

        </script>
    </body>
</html>

  • index_ov3660_html_gz

对应摄像头模块 ov3660 的控制页面,不过博主这里没有该模块,所以暂且忽略吧,理论上原理和 ov2640共同。

2.2.2 camera_pins.h —— 摄像头引脚映射关系

源码细节:

#if defined(CAMERA_MODEL_WROVER_KIT)
#define PWDN_GPIO_NUM    -1
#define RESET_GPIO_NUM   -1
#define XCLK_GPIO_NUM    21
#define SIOD_GPIO_NUM    26
#define SIOC_GPIO_NUM    27

#define Y9_GPIO_NUM      35
#define Y8_GPIO_NUM      34
#define Y7_GPIO_NUM      39
#define Y6_GPIO_NUM      36
#define Y5_GPIO_NUM      19
#define Y4_GPIO_NUM      18
#define Y3_GPIO_NUM       5
#define Y2_GPIO_NUM       4
#define VSYNC_GPIO_NUM   25
#define HREF_GPIO_NUM    23
#define PCLK_GPIO_NUM    22

#elif defined(CAMERA_MODEL_ESP_EYE)
#define PWDN_GPIO_NUM    -1
#define RESET_GPIO_NUM   -1
#define XCLK_GPIO_NUM    4
#define SIOD_GPIO_NUM    18
#define SIOC_GPIO_NUM    23

#define Y9_GPIO_NUM      36
#define Y8_GPIO_NUM      37
#define Y7_GPIO_NUM      38
#define Y6_GPIO_NUM      39
#define Y5_GPIO_NUM      35
#define Y4_GPIO_NUM      14
#define Y3_GPIO_NUM      13
#define Y2_GPIO_NUM      34
#define VSYNC_GPIO_NUM   5
#define HREF_GPIO_NUM    27
#define PCLK_GPIO_NUM    25

#elif defined(CAMERA_MODEL_M5STACK_PSRAM)
#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     25
#define SIOC_GPIO_NUM     23

#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       32
#define VSYNC_GPIO_NUM    22
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

#elif defined(CAMERA_MODEL_M5STACK_V2_PSRAM)
#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     22
#define SIOC_GPIO_NUM     23

#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       32
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

#elif defined(CAMERA_MODEL_M5STACK_WIDE)
#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     22
#define SIOC_GPIO_NUM     23

#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       32
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

#elif defined(CAMERA_MODEL_M5STACK_ESP32CAM)
#define PWDN_GPIO_NUM     -1
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     25
#define SIOC_GPIO_NUM     23

#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       17
#define VSYNC_GPIO_NUM    22
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

#elif defined(CAMERA_MODEL_AI_THINKER)
#define PWDN_GPIO_NUM     32
#define RESET_GPIO_NUM    -1
#define XCLK_GPIO_NUM      0
#define SIOD_GPIO_NUM     26
#define SIOC_GPIO_NUM     27

#define Y9_GPIO_NUM       35
#define Y8_GPIO_NUM       34
#define Y7_GPIO_NUM       39
#define Y6_GPIO_NUM       36
#define Y5_GPIO_NUM       21
#define Y4_GPIO_NUM       19
#define Y3_GPIO_NUM       18
#define Y2_GPIO_NUM        5
#define VSYNC_GPIO_NUM    25
#define HREF_GPIO_NUM     23
#define PCLK_GPIO_NUM     22

#elif defined(CAMERA_MODEL_TTGO_T_JOURNAL)
#define PWDN_GPIO_NUM      0
#define RESET_GPIO_NUM    15
#define XCLK_GPIO_NUM     27
#define SIOD_GPIO_NUM     25
#define SIOC_GPIO_NUM     23

#define Y9_GPIO_NUM       19
#define Y8_GPIO_NUM       36
#define Y7_GPIO_NUM       18
#define Y6_GPIO_NUM       39
#define Y5_GPIO_NUM        5
#define Y4_GPIO_NUM       34
#define Y3_GPIO_NUM       35
#define Y2_GPIO_NUM       17
#define VSYNC_GPIO_NUM    22
#define HREF_GPIO_NUM     26
#define PCLK_GPIO_NUM     21

#else
#error "Camera model not selected"
#endif

关于这一块的讲解,请参考 Arduino ESP32-CAM 学习之旅② ESP32-CAM开发板 该篇已经详细说明如何区分开发板。

2.2.3 CameraWebServer.ino —— Arduino代码

源码细节:

//Disable Example for now
#if 0
#include "esp_camera.h"
#include <WiFi.h>

//
// WARNING!!! PSRAM IC required for UXGA resolution and high JPEG quality
//            Ensure ESP32 Wrover Module or other board with PSRAM is selected
//            Partial images will be transmitted if image exceeds buffer size
//

// Select camera model
#define CAMERA_MODEL_WROVER_KIT // Has PSRAM
//#define CAMERA_MODEL_ESP_EYE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM
//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM
//#define CAMERA_MODEL_AI_THINKER // Has PSRAM
//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM

#include "camera_pins.h"

const char* ssid = "*********";
const char* password = "*********";

void startCameraServer();

void setup() {
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  Serial.println();

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;
  
  // if PSRAM IC present, init with UXGA resolution and higher JPEG quality
  //                      for larger pre-allocated frame buffer.
  if(psramFound()){
    config.frame_size = FRAMESIZE_UXGA;
    config.jpeg_quality = 10;
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    config.fb_count = 1;
  }

#if defined(CAMERA_MODEL_ESP_EYE)
  pinMode(13, INPUT_PULLUP);
  pinMode(14, INPUT_PULLUP);
#endif

  // camera init
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }

  sensor_t * s = esp_camera_sensor_get();
  // initial sensors are flipped vertically and colors are a bit saturated
  if (s->id.PID == OV3660_PID) {
    s->set_vflip(s, 1); // flip it back
    s->set_brightness(s, 1); // up the brightness just a bit
    s->set_saturation(s, -2); // lower the saturation
  }
  // drop down frame size for higher initial frame rate
  s->set_framesize(s, FRAMESIZE_QVGA);

#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM)
  s->set_vflip(s, 1);
  s->set_hmirror(s, 1);
#endif

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");

  startCameraServer();

  Serial.print("Camera Ready! Use 'http://");
  Serial.print(WiFi.localIP());
  Serial.println("' to connect");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10000);
}
#else
void setup(){}
void loop(){}
#endif

代码不多,稍后讲解。

2.2.4 app_httpd.cpp —— 整个http Server 和 Image Stream Server 处理过程(核心代码)

源码细节:

// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "esp_http_server.h"
#include "esp_timer.h"
#include "esp_camera.h"
#include "img_converters.h"
#include "camera_index.h"
#include "Arduino.h"

#include "fb_gfx.h"
#include "fd_forward.h"
#include "fr_forward.h"

#define ENROLL_CONFIRM_TIMES 5
#define FACE_ID_SAVE_NUMBER 7

#define FACE_COLOR_WHITE  0x00FFFFFF
#define FACE_COLOR_BLACK  0x00000000
#define FACE_COLOR_RED    0x000000FF
#define FACE_COLOR_GREEN  0x0000FF00
#define FACE_COLOR_BLUE   0x00FF0000
#define FACE_COLOR_YELLOW (FACE_COLOR_RED | FACE_COLOR_GREEN)
#define FACE_COLOR_CYAN   (FACE_COLOR_BLUE | FACE_COLOR_GREEN)
#define FACE_COLOR_PURPLE (FACE_COLOR_BLUE | FACE_COLOR_RED)

typedef struct {
        size_t size; //number of values used for filtering
        size_t index; //current value index
        size_t count; //value count
        int sum;
        int * values; //array to be filled with values
} ra_filter_t;

typedef struct {
        httpd_req_t *req;
        size_t len;
} jpg_chunking_t;

#define PART_BOUNDARY "123456789000000000000987654321"
static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";

static ra_filter_t ra_filter;
httpd_handle_t stream_httpd = NULL;
httpd_handle_t camera_httpd = NULL;

static mtmn_config_t mtmn_config = {0};
static int8_t detection_enabled = 0;
static int8_t recognition_enabled = 0;
static int8_t is_enrolling = 0;
static face_id_list id_list = {0};

static ra_filter_t * ra_filter_init(ra_filter_t * filter, size_t sample_size){
    memset(filter, 0, sizeof(ra_filter_t));

    filter->values = (int *)malloc(sample_size * sizeof(int));
    if(!filter->values){
        return NULL;
    }
    memset(filter->values, 0, sample_size * sizeof(int));

    filter->size = sample_size;
    return filter;
}

static int ra_filter_run(ra_filter_t * filter, int value){
    if(!filter->values){
        return value;
    }
    filter->sum -= filter->values[filter->index];
    filter->values[filter->index] = value;
    filter->sum += filter->values[filter->index];
    filter->index++;
    filter->index = filter->index % filter->size;
    if (filter->count < filter->size) {
        filter->count++;
    }
    return filter->sum / filter->count;
}

static void rgb_print(dl_matrix3du_t *image_matrix, uint32_t color, const char * str){
    fb_data_t fb;
    fb.width = image_matrix->w;
    fb.height = image_matrix->h;
    fb.data = image_matrix->item;
    fb.bytes_per_pixel = 3;
    fb.format = FB_BGR888;
    fb_gfx_print(&fb, (fb.width - (strlen(str) * 14)) / 2, 10, color, str);
}

static int rgb_printf(dl_matrix3du_t *image_matrix, uint32_t color, const char *format, ...){
    char loc_buf[64];
    char * temp = loc_buf;
    int len;
    va_list arg;
    va_list copy;
    va_start(arg, format);
    va_copy(copy, arg);
    len = vsnprintf(loc_buf, sizeof(loc_buf), format, arg);
    va_end(copy);
    if(len >= sizeof(loc_buf)){
        temp = (char*)malloc(len+1);
        if(temp == NULL) {
            return 0;
        }
    }
    vsnprintf(temp, len+1, format, arg);
    va_end(arg);
    rgb_print(image_matrix, color, temp);
    if(len > 64){
        free(temp);
    }
    return len;
}

static void draw_face_boxes(dl_matrix3du_t *image_matrix, box_array_t *boxes, int face_id){
    int x, y, w, h, i;
    uint32_t color = FACE_COLOR_YELLOW;
    if(face_id < 0){
        color = FACE_COLOR_RED;
    } else if(face_id > 0){
        color = FACE_COLOR_GREEN;
    }
    fb_data_t fb;
    fb.width = image_matrix->w;
    fb.height = image_matrix->h;
    fb.data = image_matrix->item;
    fb.bytes_per_pixel = 3;
    fb.format = FB_BGR888;
    for (i = 0; i < boxes->len; i++){
        // rectangle box
        x = (int)boxes->box[i].box_p[0];
        y = (int)boxes->box[i].box_p[1];
        w = (int)boxes->box[i].box_p[2] - x + 1;
        h = (int)boxes->box[i].box_p[3] - y + 1;
        fb_gfx_drawFastHLine(&fb, x, y, w, color);
        fb_gfx_drawFastHLine(&fb, x, y+h-1, w, color);
        fb_gfx_drawFastVLine(&fb, x, y, h, color);
        fb_gfx_drawFastVLine(&fb, x+w-1, y, h, color);
#if 0
        // landmark
        int x0, y0, j;
        for (j = 0; j < 10; j+=2) {
            x0 = (int)boxes->landmark[i].landmark_p[j];
            y0 = (int)boxes->landmark[i].landmark_p[j+1];
            fb_gfx_fillRect(&fb, x0, y0, 3, 3, color);
        }
#endif
    }
}

static int run_face_recognition(dl_matrix3du_t *image_matrix, box_array_t *net_boxes){
    dl_matrix3du_t *aligned_face = NULL;
    int matched_id = 0;

    aligned_face = dl_matrix3du_alloc(1, FACE_WIDTH, FACE_HEIGHT, 3);
    if(!aligned_face){
        Serial.println("Could not allocate face recognition buffer");
        return matched_id;
    }
    if (align_face(net_boxes, image_matrix, aligned_face) == ESP_OK){
        if (is_enrolling == 1){
            int8_t left_sample_face = enroll_face(&id_list, aligned_face);

            if(left_sample_face == (ENROLL_CONFIRM_TIMES - 1)){
                Serial.printf("Enrolling Face ID: %d\n", id_list.tail);
            }
            Serial.printf("Enrolling Face ID: %d sample %d\n", id_list.tail, ENROLL_CONFIRM_TIMES - left_sample_face);
            rgb_printf(image_matrix, FACE_COLOR_CYAN, "ID[%u] Sample[%u]", id_list.tail, ENROLL_CONFIRM_TIMES - left_sample_face);
            if (left_sample_face == 0){
                is_enrolling = 0;
                Serial.printf("Enrolled Face ID: %d\n", id_list.tail);
            }
        } else {
            matched_id = recognize_face(&id_list, aligned_face);
            if (matched_id >= 0) {
                Serial.printf("Match Face ID: %u\n", matched_id);
                rgb_printf(image_matrix, FACE_COLOR_GREEN, "Hello Subject %u", matched_id);
            } else {
                Serial.println("No Match Found");
                rgb_print(image_matrix, FACE_COLOR_RED, "Intruder Alert!");
                matched_id = -1;
            }
        }
    } else {
        Serial.println("Face Not Aligned");
        //rgb_print(image_matrix, FACE_COLOR_YELLOW, "Human Detected");
    }

    dl_matrix3du_free(aligned_face);
    return matched_id;
}

static size_t jpg_encode_stream(void * arg, size_t index, const void* data, size_t len){
    jpg_chunking_t *j = (jpg_chunking_t *)arg;
    if(!index){
        j->len = 0;
    }
    if(httpd_resp_send_chunk(j->req, (const char *)data, len) != ESP_OK){
        return 0;
    }
    j->len += len;
    return len;
}

static esp_err_t capture_handler(httpd_req_t *req){
    camera_fb_t * fb = NULL;
    esp_err_t res = ESP_OK;
    int64_t fr_start = esp_timer_get_time();

    fb = esp_camera_fb_get();
    if (!fb) {
        Serial.println("Camera capture failed");
        httpd_resp_send_500(req);
        return ESP_FAIL;
    }

    httpd_resp_set_type(req, "image/jpeg");
    httpd_resp_set_hdr(req, "Content-Disposition", "inline; filename=capture.jpg");
    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");

    size_t out_len, out_width, out_height;
    uint8_t * out_buf;
    bool s;
    bool detected = false;
    int face_id = 0;
    if(!detection_enabled || fb->width > 400){
        size_t fb_len = 0;
        if(fb->format == PIXFORMAT_JPEG){
            fb_len = fb->len;
            res = httpd_resp_send(req, (const char *)fb->buf, fb->len);
        } else {
            jpg_chunking_t jchunk = {req, 0};
            res = frame2jpg_cb(fb, 80, jpg_encode_stream, &jchunk)?ESP_OK:ESP_FAIL;
            httpd_resp_send_chunk(req, NULL, 0);
            fb_len = jchunk.len;
        }
        esp_camera_fb_return(fb);
        int64_t fr_end = esp_timer_get_time();
        Serial.printf("JPG: %uB %ums\n", (uint32_t)(fb_len), (uint32_t)((fr_end - fr_start)/1000));
        return res;
    }

    dl_matrix3du_t *image_matrix = dl_matrix3du_alloc(1, fb->width, fb->height, 3);
    if (!image_matrix) {
        esp_camera_fb_return(fb);
        Serial.println("dl_matrix3du_alloc failed");
        httpd_resp_send_500(req);
        return ESP_FAIL;
    }

    out_buf = image_matrix->item;
    out_len = fb->width * fb->height * 3;
    out_width = fb->width;
    out_height = fb->height;

    s = fmt2rgb888(fb->buf, fb->len, fb->format, out_buf);
    esp_camera_fb_return(fb);
    if(!s){
        dl_matrix3du_free(image_matrix);
        Serial.println("to rgb888 failed");
        httpd_resp_send_500(req);
        return ESP_FAIL;
    }

    box_array_t *net_boxes = face_detect(image_matrix, &mtmn_config);

    if (net_boxes){
        detected = true;
        if(recognition_enabled){
            face_id = run_face_recognition(image_matrix, net_boxes);
        }
        draw_face_boxes(image_matrix, net_boxes, face_id);
        free(net_boxes->score);
        free(net_boxes->box);
        free(net_boxes->landmark);
        free(net_boxes);
    }

    jpg_chunking_t jchunk = {req, 0};
    s = fmt2jpg_cb(out_buf, out_len, out_width, out_height, PIXFORMAT_RGB888, 90, jpg_encode_stream, &jchunk);
    dl_matrix3du_free(image_matrix);
    if(!s){
        Serial.println("JPEG compression failed");
        return ESP_FAIL;
    }

    int64_t fr_end = esp_timer_get_time();
    Serial.printf("FACE: %uB %ums %s%d\n", (uint32_t)(jchunk.len), (uint32_t)((fr_end - fr_start)/1000), detected?"DETECTED ":"", face_id);
    return res;
}

static esp_err_t stream_handler(httpd_req_t *req){
    camera_fb_t * fb = NULL;
    esp_err_t res = ESP_OK;
    size_t _jpg_buf_len = 0;
    uint8_t * _jpg_buf = NULL;
    char * part_buf[64];
    dl_matrix3du_t *image_matrix = NULL;
    bool detected = false;
    int face_id = 0;
    int64_t fr_start = 0;
    int64_t fr_ready = 0;
    int64_t fr_face = 0;
    int64_t fr_recognize = 0;
    int64_t fr_encode = 0;

    static int64_t last_frame = 0;
    if(!last_frame) {
        last_frame = esp_timer_get_time();
    }

    res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
    if(res != ESP_OK){
        return res;
    }

    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");

    while(true){
        detected = false;
        face_id = 0;
        fb = esp_camera_fb_get();
        if (!fb) {
            Serial.println("Camera capture failed");
            res = ESP_FAIL;
        } else {
            fr_start = esp_timer_get_time();
            fr_ready = fr_start;
            fr_face = fr_start;
            fr_encode = fr_start;
            fr_recognize = fr_start;
            if(!detection_enabled || fb->width > 400){
                if(fb->format != PIXFORMAT_JPEG){
                    bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
                    esp_camera_fb_return(fb);
                    fb = NULL;
                    if(!jpeg_converted){
                        Serial.println("JPEG compression failed");
                        res = ESP_FAIL;
                    }
                } else {
                    _jpg_buf_len = fb->len;
                    _jpg_buf = fb->buf;
                }
            } else {

                image_matrix = dl_matrix3du_alloc(1, fb->width, fb->height, 3);

                if (!image_matrix) {
                    Serial.println("dl_matrix3du_alloc failed");
                    res = ESP_FAIL;
                } else {
                    if(!fmt2rgb888(fb->buf, fb->len, fb->format, image_matrix->item)){
                        Serial.println("fmt2rgb888 failed");
                        res = ESP_FAIL;
                    } else {
                        fr_ready = esp_timer_get_time();
                        box_array_t *net_boxes = NULL;
                        if(detection_enabled){
                            net_boxes = face_detect(image_matrix, &mtmn_config);
                        }
                        fr_face = esp_timer_get_time();
                        fr_recognize = fr_face;
                        if (net_boxes || fb->format != PIXFORMAT_JPEG){
                            if(net_boxes){
                                detected = true;
                                if(recognition_enabled){
                                    face_id = run_face_recognition(image_matrix, net_boxes);
                                }
                                fr_recognize = esp_timer_get_time();
                                draw_face_boxes(image_matrix, net_boxes, face_id);
                                free(net_boxes->score);
                                free(net_boxes->box);
                                free(net_boxes->landmark);
                                free(net_boxes);
                            }
                            if(!fmt2jpg(image_matrix->item, fb->width*fb->height*3, fb->width, fb->height, PIXFORMAT_RGB888, 90, &_jpg_buf, &_jpg_buf_len)){
                                Serial.println("fmt2jpg failed");
                                res = ESP_FAIL;
                            }
                            esp_camera_fb_return(fb);
                            fb = NULL;
                        } else {
                            _jpg_buf = fb->buf;
                            _jpg_buf_len = fb->len;
                        }
                        fr_encode = esp_timer_get_time();
                    }
                    dl_matrix3du_free(image_matrix);
                }
            }
        }
        if(res == ESP_OK){
            res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
        }
        if(res == ESP_OK){
            size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
            res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
        }
        if(res == ESP_OK){
            res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
        }
        if(fb){
            esp_camera_fb_return(fb);
            fb = NULL;
            _jpg_buf = NULL;
        } else if(_jpg_buf){
            free(_jpg_buf);
            _jpg_buf = NULL;
        }
        if(res != ESP_OK){
            break;
        }
        int64_t fr_end = esp_timer_get_time();

        int64_t ready_time = (fr_ready - fr_start)/1000;
        int64_t face_time = (fr_face - fr_ready)/1000;
        int64_t recognize_time = (fr_recognize - fr_face)/1000;
        int64_t encode_time = (fr_encode - fr_recognize)/1000;
        int64_t process_time = (fr_encode - fr_start)/1000;
        
        int64_t frame_time = fr_end - last_frame;
        last_frame = fr_end;
        frame_time /= 1000;
        uint32_t avg_frame_time = ra_filter_run(&ra_filter, frame_time);
        Serial.printf("MJPG: %uB %ums (%.1ffps), AVG: %ums (%.1ffps), %u+%u+%u+%u=%u %s%d\n",
            (uint32_t)(_jpg_buf_len),
            (uint32_t)frame_time, 1000.0 / (uint32_t)frame_time,
            avg_frame_time, 1000.0 / avg_frame_time,
            (uint32_t)ready_time, (uint32_t)face_time, (uint32_t)recognize_time, (uint32_t)encode_time, (uint32_t)process_time,
            (detected)?"DETECTED ":"", face_id
        );
    }

    last_frame = 0;
    return res;
}

static esp_err_t cmd_handler(httpd_req_t *req){
    char*  buf;
    size_t buf_len;
    char variable[32] = {0,};
    char value[32] = {0,};

    buf_len = httpd_req_get_url_query_len(req) + 1;
    if (buf_len > 1) {
        buf = (char*)malloc(buf_len);
        if(!buf){
            httpd_resp_send_500(req);
            return ESP_FAIL;
        }
        if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
            if (httpd_query_key_value(buf, "var", variable, sizeof(variable)) == ESP_OK &&
                httpd_query_key_value(buf, "val", value, sizeof(value)) == ESP_OK) {
            } else {
                free(buf);
                httpd_resp_send_404(req);
                return ESP_FAIL;
            }
        } else {
            free(buf);
            httpd_resp_send_404(req);
            return ESP_FAIL;
        }
        free(buf);
    } else {
        httpd_resp_send_404(req);
        return ESP_FAIL;
    }

    int val = atoi(value);
    sensor_t * s = esp_camera_sensor_get();
    int res = 0;

    if(!strcmp(variable, "framesize")) {
        if(s->pixformat == PIXFORMAT_JPEG) res = s->set_framesize(s, (framesize_t)val);
    }
    else if(!strcmp(variable, "quality")) res = s->set_quality(s, val);
    else if(!strcmp(variable, "contrast")) res = s->set_contrast(s, val);
    else if(!strcmp(variable, "brightness")) res = s->set_brightness(s, val);
    else if(!strcmp(variable, "saturation")) res = s->set_saturation(s, val);
    else if(!strcmp(variable, "gainceiling")) res = s->set_gainceiling(s, (gainceiling_t)val);
    else if(!strcmp(variable, "colorbar")) res = s->set_colorbar(s, val);
    else if(!strcmp(variable, "awb")) res = s->set_whitebal(s, val);
    else if(!strcmp(variable, "agc")) res = s->set_gain_ctrl(s, val);
    else if(!strcmp(variable, "aec")) res = s->set_exposure_ctrl(s, val);
    else if(!strcmp(variable, "hmirror")) res = s->set_hmirror(s, val);
    else if(!strcmp(variable, "vflip")) res = s->set_vflip(s, val);
    else if(!strcmp(variable, "awb_gain")) res = s->set_awb_gain(s, val);
    else if(!strcmp(variable, "agc_gain")) res = s->set_agc_gain(s, val);
    else if(!strcmp(variable, "aec_value")) res = s->set_aec_value(s, val);
    else if(!strcmp(variable, "aec2")) res = s->set_aec2(s, val);
    else if(!strcmp(variable, "dcw")) res = s->set_dcw(s, val);
    else if(!strcmp(variable, "bpc")) res = s->set_bpc(s, val);
    else if(!strcmp(variable, "wpc")) res = s->set_wpc(s, val);
    else if(!strcmp(variable, "raw_gma")) res = s->set_raw_gma(s, val);
    else if(!strcmp(variable, "lenc")) res = s->set_lenc(s, val);
    else if(!strcmp(variable, "special_effect")) res = s->set_special_effect(s, val);
    else if(!strcmp(variable, "wb_mode")) res = s->set_wb_mode(s, val);
    else if(!strcmp(variable, "ae_level")) res = s->set_ae_level(s, val);
    else if(!strcmp(variable, "face_detect")) {
        detection_enabled = val;
        if(!detection_enabled) {
            recognition_enabled = 0;
        }
    }
    else if(!strcmp(variable, "face_enroll")) is_enrolling = val;
    else if(!strcmp(variable, "face_recognize")) {
        recognition_enabled = val;
        if(recognition_enabled){
            detection_enabled = val;
        }
    }
    else {
        res = -1;
    }

    if(res){
        return httpd_resp_send_500(req);
    }

    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
    return httpd_resp_send(req, NULL, 0);
}

static esp_err_t status_handler(httpd_req_t *req){
    static char json_response[1024];

    sensor_t * s = esp_camera_sensor_get();
    char * p = json_response;
    *p++ = '{';

    p+=sprintf(p, "\"framesize\":%u,", s->status.framesize);
    p+=sprintf(p, "\"quality\":%u,", s->status.quality);
    p+=sprintf(p, "\"brightness\":%d,", s->status.brightness);
    p+=sprintf(p, "\"contrast\":%d,", s->status.contrast);
    p+=sprintf(p, "\"saturation\":%d,", s->status.saturation);
    p+=sprintf(p, "\"sharpness\":%d,", s->status.sharpness);
    p+=sprintf(p, "\"special_effect\":%u,", s->status.special_effect);
    p+=sprintf(p, "\"wb_mode\":%u,", s->status.wb_mode);
    p+=sprintf(p, "\"awb\":%u,", s->status.awb);
    p+=sprintf(p, "\"awb_gain\":%u,", s->status.awb_gain);
    p+=sprintf(p, "\"aec\":%u,", s->status.aec);
    p+=sprintf(p, "\"aec2\":%u,", s->status.aec2);
    p+=sprintf(p, "\"ae_level\":%d,", s->status.ae_level);
    p+=sprintf(p, "\"aec_value\":%u,", s->status.aec_value);
    p+=sprintf(p, "\"agc\":%u,", s->status.agc);
    p+=sprintf(p, "\"agc_gain\":%u,", s->status.agc_gain);
    p+=sprintf(p, "\"gainceiling\":%u,", s->status.gainceiling);
    p+=sprintf(p, "\"bpc\":%u,", s->status.bpc);
    p+=sprintf(p, "\"wpc\":%u,", s->status.wpc);
    p+=sprintf(p, "\"raw_gma\":%u,", s->status.raw_gma);
    p+=sprintf(p, "\"lenc\":%u,", s->status.lenc);
    p+=sprintf(p, "\"vflip\":%u,", s->status.vflip);
    p+=sprintf(p, "\"hmirror\":%u,", s->status.hmirror);
    p+=sprintf(p, "\"dcw\":%u,", s->status.dcw);
    p+=sprintf(p, "\"colorbar\":%u,", s->status.colorbar);
    p+=sprintf(p, "\"face_detect\":%u,", detection_enabled);
    p+=sprintf(p, "\"face_enroll\":%u,", is_enrolling);
    p+=sprintf(p, "\"face_recognize\":%u", recognition_enabled);
    *p++ = '}';
    *p++ = 0;
    httpd_resp_set_type(req, "application/json");
    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
    return httpd_resp_send(req, json_response, strlen(json_response));
}

static esp_err_t index_handler(httpd_req_t *req){
    httpd_resp_set_type(req, "text/html");
    httpd_resp_set_hdr(req, "Content-Encoding", "gzip");
    sensor_t * s = esp_camera_sensor_get();
    if (s->id.PID == OV3660_PID) {
        return httpd_resp_send(req, (const char *)index_ov3660_html_gz, index_ov3660_html_gz_len);
    }
    return httpd_resp_send(req, (const char *)index_ov2640_html_gz, index_ov2640_html_gz_len);
}

void startCameraServer(){
    httpd_config_t config = HTTPD_DEFAULT_CONFIG();

    httpd_uri_t index_uri = {
        .uri       = "/",
        .method    = HTTP_GET,
        .handler   = index_handler,
        .user_ctx  = NULL
    };

    httpd_uri_t status_uri = {
        .uri       = "/status",
        .method    = HTTP_GET,
        .handler   = status_handler,
        .user_ctx  = NULL
    };

    httpd_uri_t cmd_uri = {
        .uri       = "/control",
        .method    = HTTP_GET,
        .handler   = cmd_handler,
        .user_ctx  = NULL
    };

    httpd_uri_t capture_uri = {
        .uri       = "/capture",
        .method    = HTTP_GET,
        .handler   = capture_handler,
        .user_ctx  = NULL
    };

   httpd_uri_t stream_uri = {
        .uri       = "/stream",
        .method    = HTTP_GET,
        .handler   = stream_handler,
        .user_ctx  = NULL
    };


    ra_filter_init(&ra_filter, 20);
    
    mtmn_config.type = FAST;
    mtmn_config.min_face = 80;
    mtmn_config.pyramid = 0.707;
    mtmn_config.pyramid_times = 4;
    mtmn_config.p_threshold.score = 0.6;
    mtmn_config.p_threshold.nms = 0.7;
    mtmn_config.p_threshold.candidate_number = 20;
    mtmn_config.r_threshold.score = 0.7;
    mtmn_config.r_threshold.nms = 0.7;
    mtmn_config.r_threshold.candidate_number = 10;
    mtmn_config.o_threshold.score = 0.7;
    mtmn_config.o_threshold.nms = 0.7;
    mtmn_config.o_threshold.candidate_number = 1;
    
    face_id_init(&id_list, FACE_ID_SAVE_NUMBER, ENROLL_CONFIRM_TIMES);
    
    Serial.printf("Starting web server on port: '%d'\n", config.server_port);
    if (httpd_start(&camera_httpd, &config) == ESP_OK) {
        httpd_register_uri_handler(camera_httpd, &index_uri);
        httpd_register_uri_handler(camera_httpd, &cmd_uri);
        httpd_register_uri_handler(camera_httpd, &status_uri);
        httpd_register_uri_handler(camera_httpd, &capture_uri);
    }

    config.server_port += 1;
    config.ctrl_port += 1;
    Serial.printf("Starting stream server on port: '%d'\n", config.server_port);
    if (httpd_start(&stream_httpd, &config) == ESP_OK) {
        httpd_register_uri_handler(stream_httpd, &stream_uri);
    }
}

这里才是整个CAM核心代码,包括构建控制页面WebServer、构建图片流ImageStreamServer等等。

2.3 源码剖析① —— CameraWebServer

#include "esp_camera.h"
#include <WiFi.h>

//
// WARNING!!! PSRAM IC required for UXGA resolution and high JPEG quality
//            Ensure ESP32 Wrover Module or other board with PSRAM is selected
//            Partial images will be transmitted if image exceeds buffer size
//

// Select camera model
#define CAMERA_MODEL_WROVER_KIT // Has PSRAM
//#define CAMERA_MODEL_ESP_EYE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM
//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM
//#define CAMERA_MODEL_AI_THINKER // Has PSRAM
//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM

#include "camera_pins.h"

const char* ssid = "*********";
const char* password = "*********";

void startCameraServer();

void setup() {
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  Serial.println();

  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000;
  config.pixel_format = PIXFORMAT_JPEG;
  
  // if PSRAM IC present, init with UXGA resolution and higher JPEG quality
  //                      for larger pre-allocated frame buffer.
  if(psramFound()){
    config.frame_size = FRAMESIZE_UXGA;
    config.jpeg_quality = 10;
    config.fb_count = 2;
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    config.fb_count = 1;
  }

#if defined(CAMERA_MODEL_ESP_EYE)
  pinMode(13, INPUT_PULLUP);
  pinMode(14, INPUT_PULLUP);
#endif

  // camera init
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }

  sensor_t * s = esp_camera_sensor_get();
  // initial sensors are flipped vertically and colors are a bit saturated
  if (s->id.PID == OV3660_PID) {
    s->set_vflip(s, 1); // flip it back
    s->set_brightness(s, 1); // up the brightness just a bit
    s->set_saturation(s, -2); // lower the saturation
  }
  // drop down frame size for higher initial frame rate
  s->set_framesize(s, FRAMESIZE_QVGA);

#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM)
  s->set_vflip(s, 1);
  s->set_hmirror(s, 1);
#endif

  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");

  startCameraServer();

  Serial.print("Camera Ready! Use 'http://");
  Serial.print(WiFi.localIP());
  Serial.println("' to connect");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10000);
}

2.3.1 第一步,解读 esp_camera 关键代码

这里有包含了一个重要头文件:

esp_camera.h 包含了Camera的SDK方法,其中有一个属于Camera初始化配置
在这里插入图片描述

  • camera_config_t —— 摄像头初始化配置
/**
 * @brief Configuration structure for camera initialization
 * (摄像头初始化配置结构体)
 */
typedef struct {
    int pin_pwdn;                   /*!< GPIO pin for camera power down line */
    int pin_reset;                  /*!< GPIO pin for camera reset line */
    int pin_xclk;                   /*!< GPIO pin for camera XCLK line */
    int pin_sscb_sda;               /*!< GPIO pin for camera SDA line */
    int pin_sscb_scl;               /*!< GPIO pin for camera SCL line */
    int pin_d7;                     /*!< GPIO pin for camera D7 line */
    int pin_d6;                     /*!< GPIO pin for camera D6 line */
    int pin_d5;                     /*!< GPIO pin for camera D5 line */
    int pin_d4;                     /*!< GPIO pin for camera D4 line */
    int pin_d3;                     /*!< GPIO pin for camera D3 line */
    int pin_d2;                     /*!< GPIO pin for camera D2 line */
    int pin_d1;                     /*!< GPIO pin for camera D1 line */
    int pin_d0;                     /*!< GPIO pin for camera D0 line */
    int pin_vsync;                  /*!< GPIO pin for camera VSYNC line */
    int pin_href;                   /*!< GPIO pin for camera HREF line */
    int pin_pclk;                   /*!< GPIO pin for camera PCLK line */

    int xclk_freq_hz;               /*!< Frequency of XCLK signal, in Hz. Either 20KHz or 10KHz for OV2640 double FPS (Experimental) */

    ledc_timer_t ledc_timer;        /*!< LEDC timer to be used for generating XCLK  */
    ledc_channel_t ledc_channel;    /*!< LEDC channel to be used for generating XCLK  */

    pixformat_t pixel_format;       /*!< Format of the pixel data: PIXFORMAT_ + YUV422|GRAYSCALE|RGB565|JPEG  */
    framesize_t frame_size;         /*!< Size of the output image: FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA  */

    int jpeg_quality;               /*!< Quality of JPEG output. 0-63 lower means higher quality  */
    size_t fb_count;                /*!< Number of frame buffers to be allocated. If more than one, then each frame will be acquired (double speed)  */
} camera_config_t;

主要分为几类:

  • Pin IO口引脚 (pin_xxxxx
  • 时钟配置(ledc_timerledc_channel
  • FPS(xclk_freq_hz),也叫作帧率,对于ov2640,可以去20KHz或者10KHz
  • 像素数据格式(pixel_format),包括 RGB565、JPEG等等
  • 图片输出大小(frame_size),包括 QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA 等等
  • JPEG图片质量(jpeg_quality),0-63,数字越小质量越高
  • 帧缓存数量(fb_count),默认情况下都是1
  • camera_fb_t —— 摄像头数据帧结构体(真正存储摄像头数据的地方)
/**
 * @brief Data structure of camera frame buffer
 */
typedef struct {
    uint8_t * buf;              /*!< Pointer to the pixel data */
    size_t len;                 /*!< Length of the buffer in bytes */
    size_t width;               /*!< Width of the buffer in pixels */
    size_t height;              /*!< Height of the buffer in pixels */
    pixformat_t format;         /*!< Format of the pixel data */
    struct timeval timestamp;   /*!< Timestamp since boot of the first DMA buffer of the frame */
} camera_fb_t;
  • 常见错误
#define ESP_ERR_CAMERA_BASE 0x20000
#define ESP_ERR_CAMERA_NOT_DETECTED             (ESP_ERR_CAMERA_BASE + 1)
#define ESP_ERR_CAMERA_FAILED_TO_SET_FRAME_SIZE (ESP_ERR_CAMERA_BASE + 2)
#define ESP_ERR_CAMERA_FAILED_TO_SET_OUT_FORMAT (ESP_ERR_CAMERA_BASE + 3)
#define ESP_ERR_CAMERA_NOT_SUPPORTED            (ESP_ERR_CAMERA_BASE + 4)
  • SDK方法重点
2.3.1.1 esp_camera_init —— 初始化摄像头驱动
/**
 * @brief Initialize the camera driver
 *
 * @note call camera_probe before calling this function
 *
 * This function detects and configures camera over I2C interface,
 * allocates framebuffer and DMA buffers,
 * initializes parallel I2S input, and sets up DMA descriptors.
 *
 * Currently this function can only be called once and there is
 * no way to de-initialize this module.
 *
 * @param config  Camera configuration parameters
 *
 * @return ESP_OK on success
 */
esp_err_t esp_camera_init(const camera_config_t* config);

此方法只能被调用一次。

2.3.1.2 esp_camera_deinit —— 重新初始化摄像头驱动
/**
 * @brief Deinitialize the camera driver
 *
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_STATE if the driver hasn't been initialized yet
 */
esp_err_t esp_camera_deinit();
2.3.1.3 esp_camera_fb_get—— 获取摄像头帧数据,创建帧数组返回
/**
 * @brief Obtain pointer to a frame buffer.
 *
 * @return pointer to the frame buffer
 */
camera_fb_t* esp_camera_fb_get();

这里是返回一个新的数组,也就意味着创建内容,习惯性要和 esp_camera_fb_return 一起使用

2.3.1.4 esp_camera_fb_return —— 获取摄像头帧数据,复用帧数组
/**
 * @brief Return the frame buffer to be reused again.
 *
 * @param fb    Pointer to the frame buffer
 */
void esp_camera_fb_return(camera_fb_t * fb);
2.3.1.5 esp_camera_sensor_get—— 获取摄像头传感器,一般需要对传感器做一些配置
/**
 * @brief Get a pointer to the image sensor control structure
 *
 * @return pointer to the sensor
 */
sensor_t * esp_camera_sensor_get();

暂时还没有看太懂各个参数(毕竟不是专业搞摄像头):

typedef struct _sensor {
    sensor_id_t id;             // Sensor ID.
    uint8_t  slv_addr;          // Sensor I2C slave address.
    pixformat_t pixformat;
    camera_status_t status;
    int xclk_freq_hz;

    // Sensor function pointers
    int  (*init_status)         (sensor_t *sensor);
    // 初始化相机传感器
    int  (*reset)               (sensor_t *sensor);
    // 设置相机模块的像素模式
    int  (*set_pixformat)       (sensor_t *sensor, pixformat_t pixformat);
    // 设置相机模块的帧大小
    int  (*set_framesize)       (sensor_t *sensor, framesize_t framesize);
    // 设置相机图像对比度。-3至+3
    int  (*set_contrast)        (sensor_t *sensor, int level);
    // 设置相机图像亮度。-3至+3
    int  (*set_brightness)      (sensor_t *sensor, int level);
    // 设置相机图像饱和度。-3至+3
    int  (*set_saturation)      (sensor_t *sensor, int level);
    int  (*set_sharpness)       (sensor_t *sensor, int level);
    int  (*set_denoise)         (sensor_t *sensor, int level);
    // 设置相机图像增益上限。2, 4, 8, 16, 32, 64, 128
    int  (*set_gainceiling)     (sensor_t *sensor, gainceiling_t gainceiling);
    // 设置相机图像JPEG压缩质量。0-100
    int  (*set_quality)         (sensor_t *sensor, int quality);
    // 打开(True)或关闭(False)彩色模式。默认关闭。
    int  (*set_colorbar)        (sensor_t *sensor, int enable);
    // 使能白平衡
    int  (*set_whitebal)        (sensor_t *sensor, int enable);
    // 使能增益
    int  (*set_gain_ctrl)       (sensor_t *sensor, int enable);
    // 使能曝光
    int  (*set_exposure_ctrl)   (sensor_t *sensor, int enable);
    // 使能水平方向翻转
    int  (*set_hmirror)         (sensor_t *sensor, int enable);
    // 垂直方向翻转
    int  (*set_vflip)           (sensor_t *sensor, int enable);

    int  (*set_aec2)            (sensor_t *sensor, int enable);
    // 自动白平衡
    int  (*set_awb_gain)        (sensor_t *sensor, int enable);
    // 自动增益
    int  (*set_agc_gain)        (sensor_t *sensor, int gain);
    // 自动曝光
    int  (*set_aec_value)       (sensor_t *sensor, int gain);

    int  (*set_special_effect)  (sensor_t *sensor, int effect);
    int  (*set_wb_mode)         (sensor_t *sensor, int mode);
    int  (*set_ae_level)        (sensor_t *sensor, int level);

    int  (*set_dcw)             (sensor_t *sensor, int enable);
    int  (*set_bpc)             (sensor_t *sensor, int enable);
    int  (*set_wpc)             (sensor_t *sensor, int enable);

    int  (*set_raw_gma)         (sensor_t *sensor, int enable);
    int  (*set_lenc)            (sensor_t *sensor, int enable);

    int  (*get_reg)             (sensor_t *sensor, int reg, int mask);
    int  (*set_reg)             (sensor_t *sensor, int reg, int mask, int value);
    int  (*set_res_raw)         (sensor_t *sensor, int startX, int startY, int endX, int endY, int offsetX, int offsetY, int totalX, int totalY, int outputX, int outputY, bool scale, bool binning);
    int  (*set_pll)             (sensor_t *sensor, int bypass, int mul, int sys, int root, int pre, int seld5, int pclken, int pclk);
    int  (*set_xclk)            (sensor_t *sensor, int timer, int xclk);
} sensor_t;

有一堆setXXX方法。表示设置参数

  • sensor_id_t 代表特定摄像头模块信息
typedef struct {
    uint8_t MIDH;
    uint8_t MIDL;
    uint8_t PID;
    uint8_t VER;
} sensor_id_t;

重点关注 PID(表示具体摄像头,也叫作感光元件):

#define NT99141_PID     (0x14)
#define OV9650_PID     (0x96)
#define OV7725_PID     (0x77)
#define OV2640_PID     (0x26)
#define OV3660_PID     (0x36)
#define OV5640_PID     (0x56)
#define OV7670_PID     (0x76)
  • pixformat_t ——像素格式
typedef enum {
    PIXFORMAT_RGB565,    // 2BPP/RGB565
    PIXFORMAT_YUV422,    // 2BPP/YUV422
    PIXFORMAT_GRAYSCALE, // 1BPP/GRAYSCALE
    PIXFORMAT_JPEG,      // JPEG/COMPRESSED
    PIXFORMAT_RGB888,    // 3BPP/RGB888
    PIXFORMAT_RAW,       // RAW
    PIXFORMAT_RGB444,    // 3BP2P/RGB444
    PIXFORMAT_RGB555,    // 3BP2P/RGB555
} pixformat_t;
  • framesize_t 图像帧数据大小 (长 * 宽)
typedef enum {
    FRAMESIZE_96X96,    // 96x96
    FRAMESIZE_QQVGA,    // 160x120
    FRAMESIZE_QCIF,     // 176x144
    FRAMESIZE_HQVGA,    // 240x176
    FRAMESIZE_240X240,  // 240x240
    FRAMESIZE_QVGA,     // 320x240
    FRAMESIZE_CIF,      // 400x296
    FRAMESIZE_HVGA,     // 480x320
    FRAMESIZE_VGA,      // 640x480
    FRAMESIZE_SVGA,     // 800x600
    FRAMESIZE_XGA,      // 1024x768
    FRAMESIZE_HD,       // 1280x720
    FRAMESIZE_SXGA,     // 1280x1024
    FRAMESIZE_UXGA,     // 1600x1200
    // 3MP Sensors
    FRAMESIZE_FHD,      // 1920x1080
    FRAMESIZE_P_HD,     //  720x1280
    FRAMESIZE_P_3MP,    //  864x1536
    FRAMESIZE_QXGA,     // 2048x1536
    // 5MP Sensors
    FRAMESIZE_QHD,      // 2560x1440
    FRAMESIZE_WQXGA,    // 2560x1600
    FRAMESIZE_P_FHD,    // 1080x1920
    FRAMESIZE_QSXGA,    // 2560x1920
    FRAMESIZE_INVALID
} framesize_t;
  • gainceiling_t —— 相机图像增益上限
typedef enum {
    GAINCEILING_2X,
    GAINCEILING_4X,
    GAINCEILING_8X,
    GAINCEILING_16X,
    GAINCEILING_32X,
    GAINCEILING_64X,
    GAINCEILING_128X,
} gainceiling_t;

2.3.2 第二步,解读 Setup 和 loop

源码+注释:

#include "esp_camera.h"  // 核心库
#include <WiFi.h>  // ESP32 Arduino库

//
// WARNING!!! PSRAM IC required for UXGA resolution and high JPEG quality
//            Ensure ESP32 Wrover Module or other board with PSRAM is selected
//            Partial images will be transmitted if image exceeds buffer size
//

// Select camera model
// #define CAMERA_MODEL_WROVER_KIT // Has PSRAM
//#define CAMERA_MODEL_ESP_EYE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_PSRAM // Has PSRAM
//#define CAMERA_MODEL_M5STACK_V2_PSRAM // M5Camera version B Has PSRAM
//#define CAMERA_MODEL_M5STACK_WIDE // Has PSRAM
//#define CAMERA_MODEL_M5STACK_ESP32CAM // No PSRAM
#define CAMERA_MODEL_AI_THINKER // Has PSRAM 选用安信可CAM模块
//#define CAMERA_MODEL_TTGO_T_JOURNAL // No PSRAM

#include "camera_pins.h"  //根据上面选择的CameraModel引入对应的引脚

const char* ssid = "*********";
const char* password = "*********";

void startCameraServer(); // 开启整个camera webserver

void setup() {
  // 串口初始化
  Serial.begin(115200);
  Serial.setDebugOutput(true);
  Serial.println();

  // 摄像头配置
  camera_config_t config;
  config.ledc_channel = LEDC_CHANNEL_0;
  config.ledc_timer = LEDC_TIMER_0;
  config.pin_d0 = Y2_GPIO_NUM;
  config.pin_d1 = Y3_GPIO_NUM;
  config.pin_d2 = Y4_GPIO_NUM;
  config.pin_d3 = Y5_GPIO_NUM;
  config.pin_d4 = Y6_GPIO_NUM;
  config.pin_d5 = Y7_GPIO_NUM;
  config.pin_d6 = Y8_GPIO_NUM;
  config.pin_d7 = Y9_GPIO_NUM;
  config.pin_xclk = XCLK_GPIO_NUM;
  config.pin_pclk = PCLK_GPIO_NUM;
  config.pin_vsync = VSYNC_GPIO_NUM;
  config.pin_href = HREF_GPIO_NUM;
  config.pin_sscb_sda = SIOD_GPIO_NUM;
  config.pin_sscb_scl = SIOC_GPIO_NUM;
  config.pin_pwdn = PWDN_GPIO_NUM;
  config.pin_reset = RESET_GPIO_NUM;
  config.xclk_freq_hz = 20000000; // 20KHz
  config.pixel_format = PIXFORMAT_JPEG; // JPEG格式
  
  // if PSRAM IC present, init with UXGA resolution and higher JPEG quality
  //                      for larger pre-allocated frame buffer.
  if(psramFound()){
    config.frame_size = FRAMESIZE_UXGA; // 图像帧大小
    config.jpeg_quality = 10; // JPEG压缩
    config.fb_count = 2; // 缓存帧数量
  } else {
    config.frame_size = FRAMESIZE_SVGA;
    config.jpeg_quality = 12;
    config.fb_count = 1;
  }

// 另一款摄像头模块 ESP_EYE
#if defined(CAMERA_MODEL_ESP_EYE)
  pinMode(13, INPUT_PULLUP);
  pinMode(14, INPUT_PULLUP);
#endif

  // 初始化摄像头
  esp_err_t err = esp_camera_init(&config);
  if (err != ESP_OK) {
    Serial.printf("Camera init failed with error 0x%x", err);
    return;
  }
  // 初始化成功后获取当前摄像头传感器
  sensor_t * s = esp_camera_sensor_get();
  // initial sensors are flipped vertically and colors are a bit saturated
  // 判断摄像头是否是Ov3660
  if (s->id.PID == OV3660_PID) {
    s->set_vflip(s, 1); // flip it back
    s->set_brightness(s, 1); // up the brightness just a bit
    s->set_saturation(s, -2); // lower the saturation
  }
  // drop down frame size for higher initial frame rate
  s->set_framesize(s, FRAMESIZE_QVGA);

// 另一款摄像头模块 M5STACK
#if defined(CAMERA_MODEL_M5STACK_WIDE) || defined(CAMERA_MODEL_M5STACK_ESP32CAM)
  s->set_vflip(s, 1);
  s->set_hmirror(s, 1);
#endif

  // 连接wifi路由
  WiFi.begin(ssid, password);

  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected");
  // 启动摄像头服务器,这里会包括WebServer以及图片流StreamServer
  startCameraServer();

  Serial.print("Camera Ready! Use 'http://");
  Serial.print(WiFi.localIP());
  Serial.println("' to connect");
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10000);
}

这里主要关注几个步骤:

  • 摄像头配置 camera_config_t
  • 摄像头初始化 esp_camera_init
  • 设置摄像头 esp_camera_sensor_get
  • 启动服务器监听 startCameraServer

2.3.3 第三步,解读 app_httpd(startCameraServer)

源码+注释:

// 启动Web服务器
void startCameraServer(){
    // 构建HTTP常用配置,包括端口、栈大小、send_wait_timeout、链接数等等
    httpd_config_t config = HTTPD_DEFAULT_CONFIG();

    // 处理请求:
    // - 请求地址:    http://${ip}:${port},ip为IP地址,port为端口号
    // - 请求方式:    GET 请求
    // - 请求处理响应: index_handler
    httpd_uri_t index_uri = {
        .uri       = "/",
        .method    = HTTP_GET,
        .handler   = index_handler,
        .user_ctx  = NULL
    };

    // 处理请求:
    // - 请求地址:    http://${ip}:${port}/status,ip为IP地址,port为端口号
    // - 请求方式:    GET 请求
    // - 请求处理响应: status_handler
    httpd_uri_t status_uri = {
        .uri       = "/status",
        .method    = HTTP_GET,
        .handler   = status_handler,
        .user_ctx  = NULL
    };

    // 处理请求:
    // - 请求地址:    http://${ip}:${port}/control,ip为IP地址,port为端口号
    // - 请求方式:    GET 请求
    // - 请求处理响应: cmd_handler
    httpd_uri_t cmd_uri = {
        .uri       = "/control",
        .method    = HTTP_GET,
        .handler   = cmd_handler,
        .user_ctx  = NULL
    };

    // 处理请求:
    // - 请求地址:    http://${ip}:${port}/capture,ip为IP地址,port为端口号
    // - 请求方式:    GET 请求
    // - 请求处理响应: capture_handler
    httpd_uri_t capture_uri = {
        .uri       = "/capture",
        .method    = HTTP_GET,
        .handler   = capture_handler,
        .user_ctx  = NULL
    };

    // 处理请求:
    // - 请求地址:    http://${ip}:${port}/stream,ip为IP地址,port为端口号
    // - 请求方式:    GET 请求
    // - 请求处理响应: stream_handler
   httpd_uri_t stream_uri = {
        .uri       = "/stream",
        .method    = HTTP_GET,
        .handler   = stream_handler,
        .user_ctx  = NULL
    };

    //-------- 跟人脸检测有关系 ----------------//
    ra_filter_init(&ra_filter, 20);
    mtmn_config.type = FAST;
    mtmn_config.min_face = 80;
    mtmn_config.pyramid = 0.707;
    mtmn_config.pyramid_times = 4;
    mtmn_config.p_threshold.score = 0.6;
    mtmn_config.p_threshold.nms = 0.7;
    mtmn_config.p_threshold.candidate_number = 20;
    mtmn_config.r_threshold.score = 0.7;
    mtmn_config.r_threshold.nms = 0.7;
    mtmn_config.r_threshold.candidate_number = 10;
    mtmn_config.o_threshold.score = 0.7;
    mtmn_config.o_threshold.nms = 0.7;
    mtmn_config.o_threshold.candidate_number = 1;
    
    face_id_init(&id_list, FACE_ID_SAVE_NUMBER, ENROLL_CONFIRM_TIMES);
    //-------- 跟人脸检测有关系 ----------------//

    // 启动WebServer
    Serial.printf("Starting web server on port: '%d'\n", config.server_port);
    if (httpd_start(&camera_httpd, &config) == ESP_OK) {
        // 启动服务器成功,就注入请求回调,这些请求均由Web页面发起
        httpd_register_uri_handler(camera_httpd, &index_uri);// 首页访问
        httpd_register_uri_handler(camera_httpd, &cmd_uri);// 控制命令
        httpd_register_uri_handler(camera_httpd, &status_uri);// 状态访问
        httpd_register_uri_handler(camera_httpd, &capture_uri);//
    }

    config.server_port += 1;
    config.ctrl_port += 1;
    // 启动SteamServer,端口号在WebServer基础上加1
    Serial.printf("Starting stream server on port: '%d'\n", config.server_port);
    if (httpd_start(&stream_httpd, &config) == ESP_OK) {
        // 启动服务器成功,就注入请求回调,这些请求均由Web页面发起
        httpd_register_uri_handler(stream_httpd, &stream_uri);// 图片流访问
    }
}
  • 这里主要起了两个Server,一个是H5页面的WebServer,一个是图片流的StreamServer。关于什么叫做WebServer,请自行学习 ESP8266开发之旅 网络篇⑪ WebServer——ESP8266WebServer库的使用
2.3.3.1 index_handler —— 处理 http://{ip}:{port}
static esp_err_t index_handler(httpd_req_t *req){
    httpd_resp_set_type(req, "text/html");
    httpd_resp_set_hdr(req, "Content-Encoding", "gzip");
    sensor_t * s = esp_camera_sensor_get();
    if (s->id.PID == OV3660_PID) {
        return httpd_resp_send(req, (const char *)index_ov3660_html_gz, index_ov3660_html_gz_len);
    }
    return httpd_resp_send(req, (const char *)index_ov2640_html_gz, index_ov2640_html_gz_len);
}

这里使用Gzip方式把WebHtml显示内容返回给浏览器解析。抛开CSS样式,我们截取布局加JS代码:

<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <meta name="viewport" content="width=device-width,initial-scale=1">
        <title>ESP32 OV2640</title>
    </head>
    <body>
        <section class="main">
            <div id="logo">
                <label for="nav-toggle-cb" id="nav-toggle">&#9776;&nbsp;&nbsp;Toggle OV2640 settings</label>
            </div>
            <div id="content">
                <div id="sidebar">
                    <input type="checkbox" id="nav-toggle-cb" checked="checked">
                    <nav id="menu">
                        <div class="input-group" id="framesize-group">
                            <label for="framesize">Resolution</label>
                            <select id="framesize" class="default-action">
                                <option value="10">UXGA(1600x1200)</option>
                                <option value="9">SXGA(1280x1024)</option>
                                <option value="8">XGA(1024x768)</option>
                                <option value="7">SVGA(800x600)</option>
                                <option value="6">VGA(640x480)</option>
                                <option value="5" selected="selected">CIF(400x296)</option>
                                <option value="4">QVGA(320x240)</option>
                                <option value="3">HQVGA(240x176)</option>
                                <option value="0">QQVGA(160x120)</option>
                            </select>
                        </div>
                        <div class="input-group" id="quality-group">
                            <label for="quality">Quality</label>
                            <div class="range-min">10</div>
                            <input type="range" id="quality" min="10" max="63" value="10" class="default-action">
                            <div class="range-max">63</div>
                        </div>
                        <div class="input-group" id="brightness-group">
                            <label for="brightness">Brightness</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="brightness" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="contrast-group">
                            <label for="contrast">Contrast</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="contrast" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="saturation-group">
                            <label for="saturation">Saturation</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="saturation" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="special_effect-group">
                            <label for="special_effect">Special Effect</label>
                            <select id="special_effect" class="default-action">
                                <option value="0" selected="selected">No Effect</option>
                                <option value="1">Negative</option>
                                <option value="2">Grayscale</option>
                                <option value="3">Red Tint</option>
                                <option value="4">Green Tint</option>
                                <option value="5">Blue Tint</option>
                                <option value="6">Sepia</option>
                            </select>
                        </div>
                        <div class="input-group" id="awb-group">
                            <label for="awb">AWB</label>
                            <div class="switch">
                                <input id="awb" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="awb"></label>
                            </div>
                        </div>
                        <div class="input-group" id="awb_gain-group">
                            <label for="awb_gain">AWB Gain</label>
                            <div class="switch">
                                <input id="awb_gain" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="awb_gain"></label>
                            </div>
                        </div>
                        <div class="input-group" id="wb_mode-group">
                            <label for="wb_mode">WB Mode</label>
                            <select id="wb_mode" class="default-action">
                                <option value="0" selected="selected">Auto</option>
                                <option value="1">Sunny</option>
                                <option value="2">Cloudy</option>
                                <option value="3">Office</option>
                                <option value="4">Home</option>
                            </select>
                        </div>
                        <div class="input-group" id="aec-group">
                            <label for="aec">AEC SENSOR</label>
                            <div class="switch">
                                <input id="aec" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="aec"></label>
                            </div>
                        </div>
                        <div class="input-group" id="aec2-group">
                            <label for="aec2">AEC DSP</label>
                            <div class="switch">
                                <input id="aec2" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="aec2"></label>
                            </div>
                        </div>
                        <div class="input-group" id="ae_level-group">
                            <label for="ae_level">AE Level</label>
                            <div class="range-min">-2</div>
                            <input type="range" id="ae_level" min="-2" max="2" value="0" class="default-action">
                            <div class="range-max">2</div>
                        </div>
                        <div class="input-group" id="aec_value-group">
                            <label for="aec_value">Exposure</label>
                            <div class="range-min">0</div>
                            <input type="range" id="aec_value" min="0" max="1200" value="204" class="default-action">
                            <div class="range-max">1200</div>
                        </div>
                        <div class="input-group" id="agc-group">
                            <label for="agc">AGC</label>
                            <div class="switch">
                                <input id="agc" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="agc"></label>
                            </div>
                        </div>
                        <div class="input-group hidden" id="agc_gain-group">
                            <label for="agc_gain">Gain</label>
                            <div class="range-min">1x</div>
                            <input type="range" id="agc_gain" min="0" max="30" value="5" class="default-action">
                            <div class="range-max">31x</div>
                        </div>
                        <div class="input-group" id="gainceiling-group">
                            <label for="gainceiling">Gain Ceiling</label>
                            <div class="range-min">2x</div>
                            <input type="range" id="gainceiling" min="0" max="6" value="0" class="default-action">
                            <div class="range-max">128x</div>
                        </div>
                        <div class="input-group" id="bpc-group">
                            <label for="bpc">BPC</label>
                            <div class="switch">
                                <input id="bpc" type="checkbox" class="default-action">
                                <label class="slider" for="bpc"></label>
                            </div>
                        </div>
                        <div class="input-group" id="wpc-group">
                            <label for="wpc">WPC</label>
                            <div class="switch">
                                <input id="wpc" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="wpc"></label>
                            </div>
                        </div>
                        <div class="input-group" id="raw_gma-group">
                            <label for="raw_gma">Raw GMA</label>
                            <div class="switch">
                                <input id="raw_gma" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="raw_gma"></label>
                            </div>
                        </div>
                        <div class="input-group" id="lenc-group">
                            <label for="lenc">Lens Correction</label>
                            <div class="switch">
                                <input id="lenc" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="lenc"></label>
                            </div>
                        </div>
                        <div class="input-group" id="hmirror-group">
                            <label for="hmirror">H-Mirror</label>
                            <div class="switch">
                                <input id="hmirror" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="hmirror"></label>
                            </div>
                        </div>
                        <div class="input-group" id="vflip-group">
                            <label for="vflip">V-Flip</label>
                            <div class="switch">
                                <input id="vflip" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="vflip"></label>
                            </div>
                        </div>
                        <div class="input-group" id="dcw-group">
                            <label for="dcw">DCW (Downsize EN)</label>
                            <div class="switch">
                                <input id="dcw" type="checkbox" class="default-action" checked="checked">
                                <label class="slider" for="dcw"></label>
                            </div>
                        </div>
                        <div class="input-group" id="colorbar-group">
                            <label for="colorbar">Color Bar</label>
                            <div class="switch">
                                <input id="colorbar" type="checkbox" class="default-action">
                                <label class="slider" for="colorbar"></label>
                            </div>
                        </div>
                        <div class="input-group" id="face_detect-group">
                            <label for="face_detect">Face Detection</label>
                            <div class="switch">
                                <input id="face_detect" type="checkbox" class="default-action">
                                <label class="slider" for="face_detect"></label>
                            </div>
                        </div>
                        <div class="input-group" id="face_recognize-group">
                            <label for="face_recognize">Face Recognition</label>
                            <div class="switch">
                                <input id="face_recognize" type="checkbox" class="default-action">
                                <label class="slider" for="face_recognize"></label>
                            </div>
                        </div>
                        <section id="buttons">
                            <button id="get-still">Get Still</button>
                            <button id="toggle-stream">Start Stream</button>
                            <button id="face_enroll" class="disabled" disabled="disabled">Enroll Face</button>
                        </section>
                    </nav>
                </div>
                <figure>
                    <div id="stream-container" class="image-container hidden">
                        <div class="close" id="close-stream">×</div>
                        <img id="stream" src="">
                    </div>
                </figure>
            </div>
        </section>
        <script>
document.addEventListener('DOMContentLoaded', function (event) {
  var baseHost = document.location.origin
  var streamUrl = baseHost + ':81'

  const hide = el => {
    el.classList.add('hidden')
  }
  const show = el => {
    el.classList.remove('hidden')
  }

  const disable = el => {
    el.classList.add('disabled')
    el.disabled = true
  }

  const enable = el => {
    el.classList.remove('disabled')
    el.disabled = false
  }

  const updateValue = (el, value, updateRemote) => {
    updateRemote = updateRemote == null ? true : updateRemote
    let initialValue
    if (el.type === 'checkbox') {
      initialValue = el.checked
      value = !!value
      el.checked = value
    } else {
      initialValue = el.value
      el.value = value
    }

    if (updateRemote && initialValue !== value) {
      updateConfig(el);
    } else if(!updateRemote){
      if(el.id === "aec"){
        value ? hide(exposure) : show(exposure)
      } else if(el.id === "agc"){
        if (value) {
          show(gainCeiling)
          hide(agcGain)
        } else {
          hide(gainCeiling)
          show(agcGain)
        }
      } else if(el.id === "awb_gain"){
        value ? show(wb) : hide(wb)
      } else if(el.id === "face_recognize"){
        value ? enable(enrollButton) : disable(enrollButton)
      }
    }
  }

  function updateConfig (el) {
    let value
    switch (el.type) {
      case 'checkbox':
        value = el.checked ? 1 : 0
        break
      case 'range':
      case 'select-one':
        value = el.value
        break
      case 'button':
      case 'submit':
        value = '1'
        break
      default:
        return
    }

    const query = `${baseHost}/control?var=${el.id}&val=${value}`

    fetch(query)
      .then(response => {
        console.log(`request to ${query} finished, status: ${response.status}`)
      })
  }

  document
    .querySelectorAll('.close')
    .forEach(el => {
      el.onclick = () => {
        hide(el.parentNode)
      }
    })

  // read initial values
  fetch(`${baseHost}/status`)
    .then(function (response) {
      return response.json()
    })
    .then(function (state) {
      document
        .querySelectorAll('.default-action')
        .forEach(el => {
          updateValue(el, state[el.id], false)
        })
    })

  const view = document.getElementById('stream')
  const viewContainer = document.getElementById('stream-container')
  const stillButton = document.getElementById('get-still')
  const streamButton = document.getElementById('toggle-stream')
  const enrollButton = document.getElementById('face_enroll')
  const closeButton = document.getElementById('close-stream')

  const stopStream = () => {
    window.stop();
    streamButton.innerHTML = 'Start Stream'
  }

  const startStream = () => {
    view.src = `${streamUrl}/stream`
    show(viewContainer)
    streamButton.innerHTML = 'Stop Stream'
  }

  // Attach actions to buttons
  stillButton.onclick = () => {
    stopStream()
    view.src = `${baseHost}/capture?_cb=${Date.now()}`
    show(viewContainer)
  }

  closeButton.onclick = () => {
    stopStream()
    hide(viewContainer)
  }

  streamButton.onclick = () => {
    const streamEnabled = streamButton.innerHTML === 'Stop Stream'
    if (streamEnabled) {
      stopStream()
    } else {
      startStream()
    }
  }

  enrollButton.onclick = () => {
    updateConfig(enrollButton)
  }

  // Attach default on change action
  document
    .querySelectorAll('.default-action')
    .forEach(el => {
      el.onchange = () => updateConfig(el)
    })

  // Custom actions
  // Gain
  const agc = document.getElementById('agc')
  const agcGain = document.getElementById('agc_gain-group')
  const gainCeiling = document.getElementById('gainceiling-group')
  agc.onchange = () => {
    updateConfig(agc)
    if (agc.checked) {
      show(gainCeiling)
      hide(agcGain)
    } else {
      hide(gainCeiling)
      show(agcGain)
    }
  }

  // Exposure
  const aec = document.getElementById('aec')
  const exposure = document.getElementById('aec_value-group')
  aec.onchange = () => {
    updateConfig(aec)
    aec.checked ? hide(exposure) : show(exposure)
  }

  // AWB
  const awb = document.getElementById('awb_gain')
  const wb = document.getElementById('wb_mode-group')
  awb.onchange = () => {
    updateConfig(awb)
    awb.checked ? show(wb) : hide(wb)
  }

  // Detection and framesize
  const detect = document.getElementById('face_detect')
  const recognize = document.getElementById('face_recognize')
  const framesize = document.getElementById('framesize')

  framesize.onchange = () => {
    updateConfig(framesize)
    if (framesize.value > 5) {
      updateValue(detect, false)
      updateValue(recognize, false)
    }
  }

  detect.onchange = () => {
    if (framesize.value > 5) {
      alert("Please select CIF or lower resolution before enabling this feature!");
      updateValue(detect, false)
      return;
    }
    updateConfig(detect)
    if (!detect.checked) {
      disable(enrollButton)
      updateValue(recognize, false)
    }
  }

  recognize.onchange = () => {
    if (framesize.value > 5) {
      alert("Please select CIF or lower resolution before enabling this feature!");
      updateValue(recognize, false)
      return;
    }
    updateConfig(recognize)
    if (recognize.checked) {
      enable(enrollButton)
      updateValue(detect, true)
    } else {
      disable(enrollButton)
    }
  }
})

        </script>
    </body>
</html>

这里整个Web页面主要集中于设置各种控制配置以及展示图片流,也就是该图片展示效果
在这里插入图片描述
最终我们只需要关注几行代码:

  • ${baseHost}/control?var=${el.id}&val=${value}
  • ${streamUrl}/stream
  • ${baseHost}/capture?_cb=${Date.now()}
  • ${baseHost}/status
  • ${baseHost}/control?var=${el.id}&val=${value}

这几个就对应着HTTP请求也就是各个handler的操作内容

2.3.3.2 status_handler —— 处理 http://{ip}:{port}/status

源码+注释:

// 获取当前摄像头模块的详细信息
static esp_err_t status_handler(httpd_req_t *req){
    static char json_response[1024];

    sensor_t * s = esp_camera_sensor_get();
    char * p = json_response;
    *p++ = '{';
    // 图像帧大小
    p+=sprintf(p, "\"framesize\":%u,", s->status.framesize);
    // 图片压缩质量
    p+=sprintf(p, "\"quality\":%u,", s->status.quality);
    p+=sprintf(p, "\"brightness\":%d,", s->status.brightness);
    p+=sprintf(p, "\"contrast\":%d,", s->status.contrast);
    p+=sprintf(p, "\"saturation\":%d,", s->status.saturation);
    p+=sprintf(p, "\"sharpness\":%d,", s->status.sharpness);
    p+=sprintf(p, "\"special_effect\":%u,", s->status.special_effect);
    p+=sprintf(p, "\"wb_mode\":%u,", s->status.wb_mode);
    p+=sprintf(p, "\"awb\":%u,", s->status.awb);
    p+=sprintf(p, "\"awb_gain\":%u,", s->status.awb_gain);
    p+=sprintf(p, "\"aec\":%u,", s->status.aec);
    p+=sprintf(p, "\"aec2\":%u,", s->status.aec2);
    p+=sprintf(p, "\"ae_level\":%d,", s->status.ae_level);
    p+=sprintf(p, "\"aec_value\":%u,", s->status.aec_value);
    p+=sprintf(p, "\"agc\":%u,", s->status.agc);
    p+=sprintf(p, "\"agc_gain\":%u,", s->status.agc_gain);
    p+=sprintf(p, "\"gainceiling\":%u,", s->status.gainceiling);
    p+=sprintf(p, "\"bpc\":%u,", s->status.bpc);
    p+=sprintf(p, "\"wpc\":%u,", s->status.wpc);
    p+=sprintf(p, "\"raw_gma\":%u,", s->status.raw_gma);
    p+=sprintf(p, "\"lenc\":%u,", s->status.lenc);
    p+=sprintf(p, "\"vflip\":%u,", s->status.vflip);
    p+=sprintf(p, "\"hmirror\":%u,", s->status.hmirror);
    p+=sprintf(p, "\"dcw\":%u,", s->status.dcw);
    p+=sprintf(p, "\"colorbar\":%u,", s->status.colorbar);
    // 人脸检测
    p+=sprintf(p, "\"face_detect\":%u,", detection_enabled);
    // 人脸采集
    p+=sprintf(p, "\"face_enroll\":%u,", is_enrolling);
    // 人脸检测
    p+=sprintf(p, "\"face_recognize\":%u", recognition_enabled);
    *p++ = '}';
    *p++ = 0;
    httpd_resp_set_type(req, "application/json");
    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
    return httpd_resp_send(req, json_response, strlen(json_response));
}

主要是把当前摄像头传感器的各个配置内容返回给到Web,包括人脸识别、增益曝光等等。

2.3.3.3 cmd_handler —— 处理 http://{ip}:{port}/capture

源码+注释:

// 各种设置摄像头模块功能
static esp_err_t cmd_handler(httpd_req_t *req){
    char*  buf;
    size_t buf_len;
    char variable[32] = {0,};
    char value[32] = {0,};

    buf_len = httpd_req_get_url_query_len(req) + 1;
    if (buf_len > 1) {
        buf = (char*)malloc(buf_len);
        if(!buf){
            httpd_resp_send_500(req);
            return ESP_FAIL;
        }
        if (httpd_req_get_url_query_str(req, buf, buf_len) == ESP_OK) {
            if (httpd_query_key_value(buf, "var", variable, sizeof(variable)) == ESP_OK &&
                httpd_query_key_value(buf, "val", value, sizeof(value)) == ESP_OK) {
            } else {
                free(buf);
                httpd_resp_send_404(req);
                return ESP_FAIL;
            }
        } else {
            free(buf);
            httpd_resp_send_404(req);
            return ESP_FAIL;
        }
        free(buf);
    } else {
        httpd_resp_send_404(req);
        return ESP_FAIL;
    }

    int val = atoi(value);
    sensor_t * s = esp_camera_sensor_get();
    int res = 0;

    if(!strcmp(variable, "framesize")) {
        if(s->pixformat == PIXFORMAT_JPEG) res = s->set_framesize(s, (framesize_t)val);
    }
    else if(!strcmp(variable, "quality")) res = s->set_quality(s, val);
    else if(!strcmp(variable, "contrast")) res = s->set_contrast(s, val);
    else if(!strcmp(variable, "brightness")) res = s->set_brightness(s, val);
    else if(!strcmp(variable, "saturation")) res = s->set_saturation(s, val);
    else if(!strcmp(variable, "gainceiling")) res = s->set_gainceiling(s, (gainceiling_t)val);
    else if(!strcmp(variable, "colorbar")) res = s->set_colorbar(s, val);
    else if(!strcmp(variable, "awb")) res = s->set_whitebal(s, val);
    else if(!strcmp(variable, "agc")) res = s->set_gain_ctrl(s, val);
    else if(!strcmp(variable, "aec")) res = s->set_exposure_ctrl(s, val);
    else if(!strcmp(variable, "hmirror")) res = s->set_hmirror(s, val);
    else if(!strcmp(variable, "vflip")) res = s->set_vflip(s, val);
    else if(!strcmp(variable, "awb_gain")) res = s->set_awb_gain(s, val);
    else if(!strcmp(variable, "agc_gain")) res = s->set_agc_gain(s, val);
    else if(!strcmp(variable, "aec_value")) res = s->set_aec_value(s, val);
    else if(!strcmp(variable, "aec2")) res = s->set_aec2(s, val);
    else if(!strcmp(variable, "dcw")) res = s->set_dcw(s, val);
    else if(!strcmp(variable, "bpc")) res = s->set_bpc(s, val);
    else if(!strcmp(variable, "wpc")) res = s->set_wpc(s, val);
    else if(!strcmp(variable, "raw_gma")) res = s->set_raw_gma(s, val);
    else if(!strcmp(variable, "lenc")) res = s->set_lenc(s, val);
    else if(!strcmp(variable, "special_effect")) res = s->set_special_effect(s, val);
    else if(!strcmp(variable, "wb_mode")) res = s->set_wb_mode(s, val);
    else if(!strcmp(variable, "ae_level")) res = s->set_ae_level(s, val);
    else if(!strcmp(variable, "face_detect")) {
        detection_enabled = val;
        if(!detection_enabled) {
            recognition_enabled = 0;
        }
    }
    else if(!strcmp(variable, "face_enroll")) is_enrolling = val;
    else if(!strcmp(variable, "face_recognize")) {
        recognition_enabled = val;
        if(recognition_enabled){
            detection_enabled = val;
        }
    }
    else {
        res = -1;
    }

    if(res){
        return httpd_resp_send_500(req);
    }

    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");
    return httpd_resp_send(req, NULL, 0);
}

这个方法的属性跟 status_handler 其实就是一套东西。。。.。

2.3.3.4 capture_handler —— 处理 http://{ip}:{port}/capture,拍照

源码+注释:

static esp_err_t capture_handler(httpd_req_t *req){
    camera_fb_t * fb = NULL;
    esp_err_t res = ESP_OK;
    int64_t fr_start = esp_timer_get_time();

    // 获取一帧图片内容
    fb = esp_camera_fb_get();
    if (!fb) {
        Serial.println("Camera capture failed");
        httpd_resp_send_500(req);
        return ESP_FAIL;
    }
    // 构造响应内容,格式是图片格式 jpeg
    httpd_resp_set_type(req, "image/jpeg");
    httpd_resp_set_hdr(req, "Content-Disposition", "inline; filename=capture.jpg");
    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");

    size_t out_len, out_width, out_height;
    uint8_t * out_buf;
    bool s;
    bool detected = false;
    int face_id = 0;
    // 没有开启人脸检测
    if(!detection_enabled || fb->width > 400){
        size_t fb_len = 0;
        // 图片就是JPEG格式
        if(fb->format == PIXFORMAT_JPEG){
            fb_len = fb->len;
            res = httpd_resp_send(req, (const char *)fb->buf, fb->len);
        } else {
            // 转成JPEG格式
            jpg_chunking_t jchunk = {req, 0};
            res = frame2jpg_cb(fb, 80, jpg_encode_stream, &jchunk)?ESP_OK:ESP_FAIL;
            httpd_resp_send_chunk(req, NULL, 0);
            fb_len = jchunk.len;
        }
        // 复用数组
        esp_camera_fb_return(fb);
        int64_t fr_end = esp_timer_get_time();
        Serial.printf("JPG: %uB %ums\n", (uint32_t)(fb_len), (uint32_t)((fr_end - fr_start)/1000));
        return res;
    }

    dl_matrix3du_t *image_matrix = dl_matrix3du_alloc(1, fb->width, fb->height, 3);
    if (!image_matrix) {
        esp_camera_fb_return(fb);
        Serial.println("dl_matrix3du_alloc failed");
        httpd_resp_send_500(req);
        return ESP_FAIL;
    }

    out_buf = image_matrix->item;
    out_len = fb->width * fb->height * 3;
    out_width = fb->width;
    out_height = fb->height;

    s = fmt2rgb888(fb->buf, fb->len, fb->format, out_buf);
    esp_camera_fb_return(fb);
    if(!s){
        dl_matrix3du_free(image_matrix);
        Serial.println("to rgb888 failed");
        httpd_resp_send_500(req);
        return ESP_FAIL;
    }
    // 人脸检测
    box_array_t *net_boxes = face_detect(image_matrix, &mtmn_config);

    if (net_boxes){
        detected = true;
        if(recognition_enabled){
            // 人脸识别
            face_id = run_face_recognition(image_matrix, net_boxes);
        }
        // 绘制人脸框框
        draw_face_boxes(image_matrix, net_boxes, face_id);
        free(net_boxes->score);
        free(net_boxes->box);
        free(net_boxes->landmark);
        free(net_boxes);
    }

    jpg_chunking_t jchunk = {req, 0};
    s = fmt2jpg_cb(out_buf, out_len, out_width, out_height, PIXFORMAT_RGB888, 90, jpg_encode_stream, &jchunk);
    dl_matrix3du_free(image_matrix);
    if(!s){
        Serial.println("JPEG compression failed");
        return ESP_FAIL;
    }

    int64_t fr_end = esp_timer_get_time();
    Serial.printf("FACE: %uB %ums %s%d\n", (uint32_t)(jchunk.len), (uint32_t)((fr_end - fr_start)/1000), detected?"DETECTED ":"", face_id);
    return res;
}
2.3.3.5 stream_handler —— 处理 http://{ip}:{port}/stream,图片视频流
// 图片流处理
static esp_err_t stream_handler(httpd_req_t *req){
    camera_fb_t * fb = NULL;
    esp_err_t res = ESP_OK;
    size_t _jpg_buf_len = 0;
    uint8_t * _jpg_buf = NULL;
    char * part_buf[64];
    dl_matrix3du_t *image_matrix = NULL;
    bool detected = false;
    int face_id = 0;
    int64_t fr_start = 0;
    int64_t fr_ready = 0;
    int64_t fr_face = 0;
    int64_t fr_recognize = 0;
    int64_t fr_encode = 0;

    static int64_t last_frame = 0;
    if(!last_frame) {
        last_frame = esp_timer_get_time();
    }

    res = httpd_resp_set_type(req, _STREAM_CONTENT_TYPE);
    if(res != ESP_OK){
        return res;
    }

    httpd_resp_set_hdr(req, "Access-Control-Allow-Origin", "*");

    while(true){
        detected = false;
        face_id = 0;
        fb = esp_camera_fb_get();
        if (!fb) {
            Serial.println("Camera capture failed");
            res = ESP_FAIL;
        } else {
            fr_start = esp_timer_get_time();
            fr_ready = fr_start;
            fr_face = fr_start;
            fr_encode = fr_start;
            fr_recognize = fr_start;
            if(!detection_enabled || fb->width > 400){
                if(fb->format != PIXFORMAT_JPEG){
                    bool jpeg_converted = frame2jpg(fb, 80, &_jpg_buf, &_jpg_buf_len);
                    esp_camera_fb_return(fb);
                    fb = NULL;
                    if(!jpeg_converted){
                        Serial.println("JPEG compression failed");
                        res = ESP_FAIL;
                    }
                } else {
                    _jpg_buf_len = fb->len;
                    _jpg_buf = fb->buf;
                }
            } else {

                image_matrix = dl_matrix3du_alloc(1, fb->width, fb->height, 3);

                if (!image_matrix) {
                    Serial.println("dl_matrix3du_alloc failed");
                    res = ESP_FAIL;
                } else {
                    if(!fmt2rgb888(fb->buf, fb->len, fb->format, image_matrix->item)){
                        Serial.println("fmt2rgb888 failed");
                        res = ESP_FAIL;
                    } else {
                        fr_ready = esp_timer_get_time();
                        box_array_t *net_boxes = NULL;
                        if(detection_enabled){
                            net_boxes = face_detect(image_matrix, &mtmn_config);
                        }
                        fr_face = esp_timer_get_time();
                        fr_recognize = fr_face;
                        if (net_boxes || fb->format != PIXFORMAT_JPEG){
                            if(net_boxes){
                                detected = true;
                                if(recognition_enabled){
                                    face_id = run_face_recognition(image_matrix, net_boxes);
                                }
                                fr_recognize = esp_timer_get_time();
                                draw_face_boxes(image_matrix, net_boxes, face_id);
                                free(net_boxes->score);
                                free(net_boxes->box);
                                free(net_boxes->landmark);
                                free(net_boxes);
                            }
                            if(!fmt2jpg(image_matrix->item, fb->width*fb->height*3, fb->width, fb->height, PIXFORMAT_RGB888, 90, &_jpg_buf, &_jpg_buf_len)){
                                Serial.println("fmt2jpg failed");
                                res = ESP_FAIL;
                            }
                            esp_camera_fb_return(fb);
                            fb = NULL;
                        } else {
                            _jpg_buf = fb->buf;
                            _jpg_buf_len = fb->len;
                        }
                        fr_encode = esp_timer_get_time();
                    }
                    dl_matrix3du_free(image_matrix);
                }
            }
        }
        if(res == ESP_OK){
            res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
        }
        if(res == ESP_OK){
            size_t hlen = snprintf((char *)part_buf, 64, _STREAM_PART, _jpg_buf_len);
            res = httpd_resp_send_chunk(req, (const char *)part_buf, hlen);
        }
        if(res == ESP_OK){
            res = httpd_resp_send_chunk(req, (const char *)_jpg_buf, _jpg_buf_len);
        }
        if(fb){
            esp_camera_fb_return(fb);
            fb = NULL;
            _jpg_buf = NULL;
        } else if(_jpg_buf){
            free(_jpg_buf);
            _jpg_buf = NULL;
        }
        if(res != ESP_OK){
            break;
        }
        int64_t fr_end = esp_timer_get_time();

        int64_t ready_time = (fr_ready - fr_start)/1000;
        int64_t face_time = (fr_face - fr_ready)/1000;
        int64_t recognize_time = (fr_recognize - fr_face)/1000;
        int64_t encode_time = (fr_encode - fr_recognize)/1000;
        int64_t process_time = (fr_encode - fr_start)/1000;
        
        int64_t frame_time = fr_end - last_frame;
        last_frame = fr_end;
        frame_time /= 1000;
        uint32_t avg_frame_time = ra_filter_run(&ra_filter, frame_time);
        Serial.printf("MJPG: %uB %ums (%.1ffps), AVG: %ums (%.1ffps), %u+%u+%u+%u=%u %s%d\n",
            (uint32_t)(_jpg_buf_len),
            (uint32_t)frame_time, 1000.0 / (uint32_t)frame_time,
            avg_frame_time, 1000.0 / avg_frame_time,
            (uint32_t)ready_time, (uint32_t)face_time, (uint32_t)recognize_time, (uint32_t)encode_time, (uint32_t)process_time,
            (detected)?"DETECTED ":"", face_id
        );
    }

    last_frame = 0;
    return res;
}

这里使用到一个HTTP知识点,

// 重点在于http 协议:multipart/x-mixed-replace
#define PART_BOUNDARY "123456789000000000000987654321"
static const char* _STREAM_CONTENT_TYPE = "multipart/x-mixed-replace;boundary=" PART_BOUNDARY;
static const char* _STREAM_BOUNDARY = "\r\n--" PART_BOUNDARY "\r\n";
static const char* _STREAM_PART = "Content-Type: image/jpeg\r\nContent-Length: %u\r\n\r\n";
  • 对于服务器推送,使用一个“multipart/mixed”类型的变种–multipart/x-mixed-replace。这里,“x-”表示属于实验类型。“replace”表示每一个新数据块都会代替前一个数据块。也就是说,新数据不是附加到旧数据之后,而是替代它。
  • 在服务器推送技术中,“multipart/x-mixed-replace”类型的报文由唯一的边界线组成,这些边界线分割每个数据块。每个数据块都有自己的头标,因而能够指定对象相关的内容类型和其他信息。由于“multipart/x-mixed-replace”的特性是每一新数据块取代前一数据对象,因而浏览器中总是显示最新的数据对象。
    “multipart/x-mixed-replace”报文没有结尾。也就是说,服务器可以永远保持连接,并发送所需的数据。如果用户不再在浏览器窗口中显示数据流,或者浏览器到服务器间的连接中间(例如用户按“STOP”按钮),服务器的推送才会中断。这是人们使用服务器推送的典型方式。

这里就是核心的东西。

基本上到这一步,大概的讲解就结束了,这里也只是抛砖引玉,更多细节还需要大家自行学习,特别OpenMv。



这篇关于Arduino ESP32-CAM 学习之旅③ 简单剖析官方案例源码,揭开ESP32-CAM神秘面纱的文章就介绍到这儿,希望我们推荐的文章对大家有所帮助,也希望大家多多支持为之网!


扫一扫关注最新编程教程