Question

我正在开发一个类似于v4l2src的gstreamer插件，它可以从我们的相机捕获实时视频并使用gstreamer进行显示。

我的插件能够成功生成yuv文件。

现在我需要将相机图像缓冲区复制到gstreamer缓冲区并将其推送到下一个元素。为此，我使用了以下方法：

    GstBuffer  *outbuf1

    outbuf1 =  gst_buffer_new_allocate(NULL,*buflen,NULL);
    ret_size = gst_buffer_fill(outbuf1,pImgBuf->pBuffer[0],pImgBuf->iFilledLen[0]);

    ret = gst_pad_push(Video->gst_filter->srcpad,outbuf1);

我在这里收到错误代码GST_FLOW_FLUSHING

进一步调试这个我还从图像缓冲区中的数据生成了一个yuv文件，然后将图像缓冲区复制到gstreamer缓冲区：

    fwrite( pImgBuf->pBuffer[0], pImgBuf->iFilledLen[0], 1, Video->File );

这个yuv文件是使用vooya生成和播放的。

现在当我尝试使用gstreamer缓冲区生成yuv文件时，yuv文件没有正确生成，因为它没有在vooya上播放并且提供错误消息＆＃34;没有好的数据＆＃34;

以下是我的代码流程，以获取更多详细信息：

static void gst_imx219src_init (Gstimx219src * filter)
{
    printf("================================Inside  gst_imx219src_init============== \n");
  filter->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
  gst_pad_set_event_function (filter->sinkpad,
                              GST_DEBUG_FUNCPTR(gst_imx219src_sink_event));


-----------------code for camera init and recording -------------------

  ret = start_processing_on_event_dequeue( hHandle, filter );


start_processing_on_event_dequeue : This function will start the recording process in camera.This function internally calls the below function:


void Video_DeliverInput( void *hVideo, CAM_ImageBuffer *pImgBuf , CAM_StreamID  strmId)
{

    VideoChain *Video = (VideoChain*)Video;
    CAM_Error         error  = CAM_ERROR_NONE;
    int retCode = *buflen;
    GstBuffer  *outbuf1,*outbuf2,*outbuf3;

    GstFlowReturn ret;

    buflen = pImgBuf->iFilledLen;
    outbuf1 =  gst_buffer_new_allocate(NULL,*buflen,NULL);
    outbuf2 =  gst_buffer_new_allocate(NULL,*buflen,NULL);
    outbuf3 =  gst_buffer_new_allocate(NULL,*buflen,NULL);
    gst_buffer_memset(outbuf1, 0, '\0', *buflen);
    gst_buffer_memset(outbuf2, 0, '\0', *buflen);
    gst_buffer_memset(outbuf3, 0, '\0', *buflen);

    if ( Video->iEncoderType == 0 ) // yuv
        {
            if ( Video->File != NULL )
            {
                fwrite( pImgBuf->pBuffer[0], pImgBuf->iFilledLen[0], 1, Video->File );
                fwrite( pImgBuf->pBuffer[1], pImgBuf->iFilledLen[1], 1, Video->File );
                fwrite( pImgBuf->pBuffer[2], pImgBuf->iFilledLen[2], 1, Video->File );
            }
        }

        if(outbuf1)
        {

        ret_size = gst_buffer_fill (outbuf1, 0, pImgBuf->pBuffer[0],pImgBuf->iFilledLen[0]);
        ret_size = gst_buffer_fill (outbuf2, 0, pImgBuf->pBuffer[1],pImgBuf->iFilledLen[1]);
        ret_size = gst_buffer_fill (outbuf3, 0, pImgBuf->pBuffer[2],pImgBuf->iFilledLen[2]);
        }

            else
            {
                printf("===========failed to create buffer \n");
            }


        gst_pad_set_active (Video->gst_filter->srcpad,TRUE);
        ret = gst_pad_is_active (Video->gst_filter->srcpad);
        ret = gst_pad_push(Video->gst_filter->srcpad,outbuf1);
#if defined( PLATFORM_PROCESSOR_ULC )
        if(strmId == CAM_STREAM1)
        error = CAM_PortEnqueueBuffer( hVideo->hCameraEngine, CAM_PORT_PREVIEW, pImgBuf );
        else
            error = CAM_PortEnqueueBuffer( hVideo->hCameraEngine, CAM_PORT_STILL, pImgBuf );

        ASSERT_CAM_ERROR( error );
#else
        error = CAM_PortEnqueueBuffer( hVideo->hCameraEngine, CAM_PORT_VIDEO, pImgBuf );
        ASSERT_CAM_ERROR( error );
#endif
    //}

     return;
}

  filter->srcpad = gst_pad_new_from_static_template (&src_factory, "src");
  ret = start_processing_on_event_dequeue( hHandle, filter );

请有人帮我这个吗？

感谢您的帮助。

将相机图像缓冲区复制到gstreamer缓冲区

0 个答案: