esp 32 cam take photo on BMP

Hello,

I 'm new in Arduino Ide
I used the code in link to take photos with the ESP32-CAM board and save them to a microSD card .
and it it is work , though I want to save the picture on .bmp form
could any one help me to convert jpg photo to .bmp on SD card

#include “esp_camera.h”
#include “Arduino.h”
#include “FS.h” // SD Card ESP32
#include “SD_MMC.h” // SD Card ESP32
#include “soc/soc.h” // Disable brownour problems
#include “soc/rtc_cntl_reg.h” // Disable brownour problems
#include “driver/rtc_io.h”
#include <EEPROM.h> // read and write from flash memory

// define the number of bytes you want to access
#define EEPROM_SIZE 1

// Pin definition for 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

int pictureNumber = 0;

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

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(psramFound()){
config.frame_size = FRAMESIZE_UXGA; // FRAMESIZE_ + QVGA|CIF|VGA|SVGA|XGA|SXGA|UXGA
config.jpeg_quality = 10;
config.fb_count = 2;
} else {
config.frame_size = FRAMESIZE_SVGA;
config.jpeg_quality = 12;
config.fb_count = 1;
}

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

//Serial.println(“Starting SD Card”);
if(!SD_MMC.begin()){
Serial.println(“SD Card Mount Failed”);
return;
}

uint8_t cardType = SD_MMC.cardType();
if(cardType == CARD_NONE){
Serial.println(“No SD Card attached”);
return;
}

camera_fb_t * fb = NULL;

// Take Picture with Camera
fb = esp_camera_fb_get();
if(!fb) {
Serial.println(“Camera capture failed”);
return;
}
// initialize EEPROM with predefined size
EEPROM.begin(EEPROM_SIZE);
pictureNumber = EEPROM.read(0) + 1;

// Path where new picture will be saved in SD Card
String path = “/picture” + String(pictureNumber) +".jpg";

fs::FS &fs = SD_MMC;
Serial.printf(“Picture file name: %s\n”, path.c_str());

File file = fs.open(path.c_str(), FILE_WRITE);
if(!file){
Serial.println(“Failed to open file in writing mode”);
}
else {
file.write(fb->buf, fb->len); // payload (image), payload length
Serial.printf(“Saved file to path: %s\n”, path.c_str());
EEPROM.write(0, pictureNumber);
EEPROM.commit();
}
file.close();
esp_camera_fb_return(fb);

// Turns off the ESP32-CAM white on-board LED (flash) connected to GPIO 4
pinMode(4, OUTPUT);
digitalWrite(4, LOW);
rtc_gpio_hold_en(GPIO_NUM_4);

delay(2000);
Serial.println(“Going to sleep now”);
delay(2000);
esp_deep_sleep_start();
Serial.println(“This will never be printed”);
}

void loop() {

}

I would guess that if you changed

config.pixel_format = PIXFORMAT_JPEG;

to

config.pixel_format = PIXFORMAT_BMP;

And

// Path where new picture will be saved in SD Card
  String path = "/picture" + String(pictureNumber) +".jpg";

to

// Path where new picture will be saved in SD Card
  String path = "/picture" + String(pictureNumber) +".bmp";

it might work.

Thanks for your reply,

I changed it but it give me that

'PIXFORMAT_BMP' was not declared in this scope

Thanks.

A list of supported formats suggests that bitmap is not supported. You could use RAW format and store it with bitmap headers in order to do the trick.