monitor图像时不时出现一帧花屏，出现频率还很高，请问是哪里出问题了吗？

摄像头在正常运行显示图像时，monitor中时不时会出现 bh 0x001d2d05 白色字样，此时该帧图像会显示花掉，monitor显示如下：

I (551899) camera_httpd: MJPG: 32000B 41ms (24.4fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (551939) camera_httpd: MJPG: 31942B 40ms (25.0fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (551979) camera_httpd: MJPG: 31733B 35ms (28.6fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (552019) camera_httpd: MJPG: 32000B 43ms (23.3fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (552059) camera_httpd: MJPG: 31813B 43ms (23.3fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (552099) camera_httpd: MJPG: 31831B 35ms (28.6fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (552139) camera_httpd: MJPG: 31443B 43ms (23.3fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (552179) camera_httpd: MJPG: 31740B 34ms (29.4fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

bh 0x001d2d05

I (552219) camera_httpd: MJPG: 31320B 47ms (21.3fps), AVG: 39ms (25.6fps), 0+0+0+0=0 0

I (552349) camera_httpd: MJPG: 31571B 123ms (8.1fps), AVG: 43ms (23.3fps), 0+0+0+0=0 0

I (552369) camera_httpd: MJPG: 31199B 20ms (50.0fps), AVG: 42ms (23.8fps), 0+0+0+0=0 0



查看代码，出现该提示字样在 esp-whocomponentsesp32-cameradrivercamera.c 这个文件中的



static void IRAM_ATTR dma_filter_buffer(size_t buf_idx)

{

    //no need to process the data if frame is in use or is bad

    if(s_state->fb->ref || s_state->fb->bad) {

        return;

    }



    //check if there is enough space in the frame buffer for the new data

    size_t buf_len = s_state->width * s_state->fb_bytes_per_pixel / s_state->dma_per_line;

    size_t fb_pos = s_state->dma_filtered_count * buf_len;

    if(fb_pos > s_state->fb_size - buf_len) {

        //size_t processed = s_state->dma_received_count * buf_len;

        //ets_printf("[%s:%u] ovf pos: %u, processed: %un", __FUNCTION__, __LINE__, fb_pos, processed);

        return;

    }



    //convert I2S DMA buffer to pixel data

    (*s_state->dma_filter)(s_state->dma_buf[buf_idx], &s_state->dma_desc[buf_idx], s_state->fb->buf + fb_pos);



    //first frame buffer

    if(!s_state->dma_filtered_count) {

        //check for correct JPEG header

        if(s_state->sensor.pixformat == PIXFORMAT_JPEG) {

            uint32_t sig = *((uint32_t *)s_state->fb->buf) & 0xFFFFFF;

            if(sig != 0xffd8ff) {

                ets_printf("bh 0x%08xn", sig);

                s_state->fb->bad = 1;

                return;

            }

        }

        //set the frame properties

        s_state->fb->width = resolution[s_state->sensor.status.framesize].width;

        s_state->fb->height = resolution[s_state->sensor.status.framesize].height;

        s_state->fb->format = s_state->sensor.pixformat;



        uint64_t us = (uint64_t)esp_timer_get_time();

        s_state->fb->timestamp.tv_sec = us / 1000000UL;

        s_state->fb->timestamp.tv_usec = us % 1000000UL;

    }

    s_state->dma_filtered_count++;

}



能帮我分析处理下形成这个问题的原因吗？感谢！