jpeg encode test @https://github.com/espressif/esp-adf-libs/tree/master/esp_codec

main.cpp

#include <Arduino.h>
#include "esp_jpeg_enc.h"
int esp_jpeg_enc_demo1()
{

    /// configure encoder
    jpeg_enc_info_t info = DEFAULT_JPEG_ENC_CONFIG();
    info.quality = 80;
    info.src_type = JPEG_RAW_TYPE_RGB888;
    /// allocate input buffer to fill original image  stream.
    int in_len = info.width * info.height * 3;
    uint8_t *inbuf = (uint8_t *)ps_malloc(in_len);
    for(int i=0;i<in_len;i++)
    {
        inbuf[i] = i%255;
    }
    if (inbuf == NULL)
    {
        return 0;
    }
    /// allocate output buffer to fill encoded image stream.
    int out_len = info.width * info.height * 2;
    uint8_t *outbuf = (uint8_t *)ps_malloc(out_len);
    if (inbuf == NULL)
    {
        return 0;
    }
    int out_size = 0;
    void *el = jpeg_enc_open(&info);
    if (el == NULL)
    {
        return 0;
    }
    jpeg_enc_process(el, inbuf, in_len, outbuf, out_len, &out_size);
    return 1;
}
void setup()
{
    USBSerial.begin(115200);
}
void loop()
{
    delay(1000);
    long time = millis();
    USBSerial.printf("start\n");
    int err = esp_jpeg_enc_demo1();
    USBSerial.printf("time:%d, %d\n", err, millis() - time);
}

platformio.ini

[env:esp32s3]
platform = espressif32
board = esp32-s3-wroom-1
board_build.partitions = default_8MB.csv
board_build.flash_mode = qio
board_upload.flash_size = 8MB
build_flags =
    -Llib/codec -lesp_codec
    -DBOARD_HAS_PSRAM
    -mfix-esp32-psram-cache-issue
framework = arduino
upload_port = COM4
upload_speed = 921600