C++ (Cpp) gst_video_converter_frame示例

示例#1

文件： gstvalidatessim.c 项目： thiblahute/gst-devtools

static gboolean
gst_validate_ssim_convert (GstValidateSsim * self, SSimConverterInfo * info,
    GstVideoFrame * frame, GstVideoFrame * converted_frame)
{
  gboolean res = TRUE;
  GstBuffer *outbuf = NULL;

  g_return_val_if_fail (info != NULL, FALSE);

  outbuf = gst_buffer_new_allocate (NULL, info->out_info.size, NULL);
  if (!gst_video_frame_map (converted_frame, &info->out_info, outbuf,
          GST_MAP_WRITE)) {
    GST_VALIDATE_REPORT (self, GENERAL_INPUT_ERROR,
        "Could not map output converted_frame");
    goto fail;
  }

  gst_video_converter_frame (info->converter, frame, converted_frame);

done:
  if (outbuf)
    gst_buffer_unref (outbuf);

  return res;

fail:
  res = FALSE;
  goto done;
}

示例#2

文件： gstvideoscale.c 项目： ConfusedReality/pkg_multimedia_gst-plugins-base

static GstFlowReturn
gst_video_scale_transform_frame (GstVideoFilter * filter,
                                 GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
    GstVideoScale *videoscale = GST_VIDEO_SCALE_CAST (filter);
    GstFlowReturn ret = GST_FLOW_OK;

    GST_CAT_DEBUG_OBJECT (CAT_PERFORMANCE, filter, "doing video scaling");

    gst_video_converter_frame (videoscale->convert, in_frame, out_frame);

    return ret;
}

示例#3

文件： gstvideoconvert.c 项目： chihyoung/gst-plugins-base

static GstFlowReturn
gst_video_convert_transform_frame (GstVideoFilter * filter,
    GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
  GstVideoConvert *space;

  space = GST_VIDEO_CONVERT_CAST (filter);

  GST_CAT_DEBUG_OBJECT (GST_CAT_PERFORMANCE, filter,
      "doing colorspace conversion from %s -> to %s",
      GST_VIDEO_INFO_NAME (&filter->in_info),
      GST_VIDEO_INFO_NAME (&filter->out_info));

  gst_video_converter_frame (space->convert, in_frame, out_frame);

  return GST_FLOW_OK;
}