camera.h

 
#pragma once
 
#include "esp_camera.h"
 
namespace WroverPins
{
#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
 
/* Parallel Data Bus (Y2-Y9) */
#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
} // namespace WroverPins
 
typedef struct {
    void* buffer;
    size_t length;
    size_t width;
    size_t height;
} camera_buffer_t;
 
class Camera
{
private:
    camera_config_t _config; 
    camera_buffer_t _buffer;
 
public:
    Camera() : _buffer()
    {
        this->_config.ledc_channel = LEDC_CHANNEL_0;
        this->_config.ledc_timer = LEDC_TIMER_0;
        this->_config.pin_d0 = Y2_GPIO_NUM;
        this->_config.pin_d1 = Y3_GPIO_NUM;
        this->_config.pin_d2 = Y4_GPIO_NUM;
        this->_config.pin_d3 = Y5_GPIO_NUM;
        this->_config.pin_d4 = Y6_GPIO_NUM;
        this->_config.pin_d5 = Y7_GPIO_NUM;
        this->_config.pin_d6 = Y8_GPIO_NUM;
        this->_config.pin_d7 = Y9_GPIO_NUM;
        this->_config.pin_xclk = XCLK_GPIO_NUM;
        this->_config.pin_pclk = PCLK_GPIO_NUM;
        this->_config.pin_vsync = VSYNC_GPIO_NUM;
        this->_config.pin_href = HREF_GPIO_NUM;
        this->_config.pin_sccb_sda = SIOD_GPIO_NUM;
        this->_config.pin_sccb_scl = SIOC_GPIO_NUM;
        this->_config.pin_pwdn = PWDN_GPIO_NUM;
        this->_config.pin_reset = RESET_GPIO_NUM;
 
        this->_config.xclk_freq_hz = 20000000;       // 20MHz: Balance between speed and signal noise
        this->_config.pixel_format = PIXFORMAT_JPEG; // Required for MJPEG streaming
        this->_config.frame_size = FRAMESIZE_QVGA;   // 320x240
        this->_config.jpeg_quality = 12;             // 0-63 (lower is higher quality, 12 is optimal for Sentry)
        this->_config.fb_count = 2;                  // Double buffering in PSRAM
        this->_config.fb_location = CAMERA_FB_IN_PSRAM;
        this->_config.grab_mode = CAMERA_GRAB_LATEST;
    }
 
    ~Camera()
    {
        if (this->_buffer.buffer != NULL)
        {
            free(this->_buffer.buffer);
        }
    }
 
    bool begin();
    void capture();
    const camera_buffer_t& get_frame_buffer() { return this->_buffer; }
};