Hi,
Please try the following patch:
#if 1
static int dump = 0;
int idx = 1;
if (dump < 150) {
GstMapInfo in_map_info;
NvBufSurface *surface = NULL, ip_surf;
memset (&in_map_info, 0, sizeof (in_map_info));
if (!gst_buffer_map (buf, &in_map_info, GST_MAP_READ)) {
g_print ("Error: Failed to map gst buffer\n");
gst_buffer_unmap (buf, &in_map_info);
return GST_PAD_PROBE_OK;
}
cudaError_t cuda_err;
NvBufSurfTransformRect src_rect, dst_rect;
surface = (NvBufSurface *) in_map_info.data;
ip_surf = *surface;
ip_surf.numFilled = ip_surf.batchSize = 1;
ip_surf.surfaceList = &(surface->surfaceList[idx]);
int batch_size= surface->batchSize;
printf("\nBatch Size : %d, resolution : %dx%d \n",batch_size,
surface->surfaceList[idx].width, surface->surfaceList[idx].height);
src_rect.top = 0;
src_rect.left = 0;
src_rect.width = (guint) surface->surfaceList[idx].width;
src_rect.height= (guint) surface->surfaceList[idx].height;
dst_rect.top = 0;
dst_rect.left = 0;
dst_rect.width = (guint) surface->surfaceList[idx].width;
dst_rect.height= (guint) surface->surfaceList[idx].height;
NvBufSurfTransformParams nvbufsurface_params;
nvbufsurface_params.src_rect = &src_rect;
nvbufsurface_params.dst_rect = &dst_rect;
nvbufsurface_params.transform_flag = NVBUFSURF_TRANSFORM_CROP_SRC | NVBUFSURF_TRANSFORM_CROP_DST;
nvbufsurface_params.transform_filter = NvBufSurfTransformInter_Default;
NvBufSurface *dst_surface = NULL;
NvBufSurfaceCreateParams nvbufsurface_create_params;
/* An intermediate buffer for NV12/RGBA to BGR conversion will be
* required. Can be skipped if custom algorithm can work directly on NV12/RGBA. */
nvbufsurface_create_params.gpuId = surface->gpuId;
nvbufsurface_create_params.width = (gint) surface->surfaceList[idx].width;
nvbufsurface_create_params.height = (gint) surface->surfaceList[idx].height;
nvbufsurface_create_params.size = 0;
nvbufsurface_create_params.colorFormat = NVBUF_COLOR_FORMAT_RGBA;
nvbufsurface_create_params.layout = NVBUF_LAYOUT_PITCH;
nvbufsurface_create_params.memType = NVBUF_MEM_DEFAULT;
cuda_err = cudaSetDevice (surface->gpuId);
cudaStream_t cuda_stream;
cuda_err=cudaStreamCreate (&cuda_stream);
int create_result = NvBufSurfaceCreate(&dst_surface,1,&nvbufsurface_create_params);
NvBufSurfTransformConfigParams transform_config_params;
NvBufSurfTransform_Error err;
transform_config_params.compute_mode = NvBufSurfTransformCompute_Default;
transform_config_params.gpu_id = surface->gpuId;
transform_config_params.cuda_stream = cuda_stream;
err = NvBufSurfTransformSetSessionParams (&transform_config_params);
NvBufSurfaceMemSet (dst_surface, 0, 0, 0);
err = NvBufSurfTransform (&ip_surf, dst_surface, &nvbufsurface_params);
if (err != NvBufSurfTransformError_Success) {
g_print ("NvBufSurfTransform failed with error %d while converting buffer\n", err);
}
NvBufSurfaceMap (dst_surface, 0, 0, NVBUF_MAP_READ);
NvBufSurfaceSyncForCpu (dst_surface, 0, 0);
cv::Mat bgr_frame = cv::Mat (cv::Size(nvbufsurface_create_params.width, nvbufsurface_create_params.height), CV_8UC3);
cv::Mat in_mat =
cv::Mat (nvbufsurface_create_params.height, nvbufsurface_create_params.width,
CV_8UC4, dst_surface->surfaceList[0].mappedAddr.addr[0],
dst_surface->surfaceList[0].pitch);
cv::cvtColor (in_mat, bgr_frame, CV_RGBA2BGR);
char filename[64];
snprintf(filename, 64, "/tmp/image%03d.jpg", dump);
cv::imwrite(filename,bgr_frame);
dump ++;
NvBufSurfaceUnMap (dst_surface, 0, 0);
NvBufSurfaceDestroy (dst_surface);
cudaStreamDestroy (cuda_stream);
gst_buffer_unmap (buf, &in_map_info);
}
#endif