【花雕学编程】Arduino动手做（230）-IP 视频流 Web 服务器 DF创客社区

驴友花雕 发表于 2024-9-12 18:14:39

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

ESP32-Cam 是一款运行在 ESP32-S 芯片上并使用 OV2640 摄像头的小型摄像头模块。ESP32_Cam 也可以 OV7670 摄像头，但 OV2640 更好（更高的分辨率和内置的 JPEG 编码，这消除了 ESP32-S 的处理任务）。
ESP-32 Cam 规格ESP-32 系列
它支持 Wi-Fi （802.11b/g/n）
支持蓝牙（4.2 带 BLE）
内置 LED 闪光灯
9 个 IO 端口
支持 UART、SPI、I2C 和 PWM
内置 micro SD 读卡器
输入电源：3.3V / 5V（据报道，5V 供电比 3.3V 更稳定）
OV2640 摄像头
2 百万像素
阵列尺寸：UXGA （1600 x 1200）
镜头尺寸：1/4 英寸（6.35 毫米）
最大图像传输速率：15 帧/秒

驴友花雕 发表于 2024-9-12 18:17:35

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验二百三十：ESP32 CAM开发板带OV2640摄像头模块 WIFI+蓝牙模块
项目实验之十三：ESP32-CAM监控 IP 摄像头托管一个视频流 Web 服务器

实验开源代码

/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验二百三十：ESP32 CAM开发板带OV2640摄像头模块 WIFI+蓝牙模块
项目实验之十三：ESP32-CAM监控 IP 摄像头托管一个视频流 Web 服务器
*/

#include "esp_camera.h" // 引入ESP32摄像头库
#include <WiFi.h> // 引入Wi-Fi库
#include "esp_timer.h" // 引入定时器库
#include "img_converters.h" // 引入图像转换库
#include "Arduino.h" // 引入Arduino核心库
#include "fb_gfx.h" // 引入帧缓冲图形库
#include "soc/soc.h" // 引入系统级库，用于禁用掉电问题
#include "soc/rtc_cntl_reg.h"// 引入RTC控制寄存器库，用于禁用掉电问题
#include "esp_http_server.h" // 引入HTTP服务器库

// 替换为你的Wi-Fi网络凭据
const char* ssid = "zhz3";
const char* password = "z156721";

#define PART_BOUNDARY "123456789000000000000987654321" // 定义边界字符串

// 测试过的摄像头模型
#define CAMERA_MODEL_AI_THINKER
//#define CAMERA_MODEL_M5STACK_PSRAM
//#define CAMERA_MODEL_M5STACK_WITHOUT_PSRAM

// 未测试的摄像头模型
//#define CAMERA_MODEL_WROVER_KIT

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

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";

httpd_handle_t stream_httpd = NULL;

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;

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

while(true){
fb = esp_camera_fb_get();
if (!fb) {
   Serial.println("Camera capture failed");
   res = ESP_FAIL;
} else {
   if(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;
   }
   }
}
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(res == ESP_OK){
   res = httpd_resp_send_chunk(req, _STREAM_BOUNDARY, strlen(_STREAM_BOUNDARY));
}
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;
}
//Serial.printf("MJPG: %uB\n",(uint32_t)(_jpg_buf_len));
}
return res;
}

void startCameraServer(){
httpd_config_t config = HTTPD_DEFAULT_CONFIG();
config.server_port = 80;

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

//Serial.printf("Starting web server on port: '%d'\n", config.server_port);
if (httpd_start(&stream_httpd, &config) == ESP_OK) {
httpd_register_uri_handler(stream_httpd, &index_uri);
}
}

void setup() {
WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector

Serial.begin(115200);
Serial.setDebugOutput(false);

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(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;
}

// 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;
}
// Wi-Fi connection
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");

Serial.print("Camera Stream Ready! Go to: http://");
Serial.print(WiFi.localIP());

// Start streaming web server
startCameraServer();
}

void loop() {
delay(1);
}

驴友花雕 发表于 2024-9-12 18:18:46

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

实验串口返回情况

驴友花雕 发表于 2024-9-12 18:22:40

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

PC端和手机端视频流截图

驴友花雕 发表于 2024-9-12 18:25:00

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

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【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器

【花雕学编程】Arduino动手做（230）---IP 视频流 Web 服务器