C++ (Cpp) gst_gl_stereo_mix_process_frames示例

示例#1

文件： gstglstereomix.c 项目： thiblahute/gst-plugins-bad

static gboolean
gst_gl_stereo_mix_make_output (GstGLStereoMix * mix)
{
  GList *walk;
  gboolean res = FALSE;
  GstElement *element = GST_ELEMENT (mix);
  gboolean missing_buffer = FALSE;

  GST_LOG_OBJECT (mix, "Processing buffers");

  GST_OBJECT_LOCK (mix);
  walk = element->sinkpads;
  while (walk) {
    GstVideoAggregatorPad *vaggpad = walk->data;
    GstGLStereoMixPad *pad = walk->data;
    GstBuffer *buffer = gst_video_aggregator_pad_get_current_buffer (vaggpad);

    GST_LOG_OBJECT (mix, "Checking pad %" GST_PTR_FORMAT, vaggpad);

    if (buffer != NULL) {
      pad->current_buffer = buffer;

      GST_DEBUG_OBJECT (pad, "Got buffer %" GST_PTR_FORMAT,
          pad->current_buffer);
    } else {
      GST_LOG_OBJECT (mix, "No buffer on pad %" GST_PTR_FORMAT, vaggpad);
      pad->current_buffer = NULL;
      missing_buffer = TRUE;
    }
    walk = g_list_next (walk);
  }
  if (missing_buffer) {
    /* We're still waiting for a buffer to turn up on at least one input */
    GST_WARNING_OBJECT (mix, "Not generating output - need more input buffers");
    res = TRUE;
    goto out;
  }

  /* Copy GL memory from each input frame to the output */
  if (!gst_gl_stereo_mix_process_frames (mix)) {
    GST_LOG_OBJECT (mix, "Failed to process frames to output");
    goto out;
  }

  if (mix->primary_out == NULL)
    goto out;

  res = TRUE;

out:
  GST_OBJECT_UNLOCK (mix);

  return res;
}

示例#2

文件： gstglstereomix.c 项目： ndufresne/gst-plugins-bad

gboolean
gst_gl_stereo_mix_make_output (GstGLStereoMix * mix)
{
  guint i;
  GList *walk;
  gboolean res = FALSE;
  guint array_index = 0;
  GstElement *element = GST_ELEMENT (mix);
  gboolean missing_buffer = FALSE;

  GST_LOG_OBJECT (mix, "Processing buffers");

  GST_OBJECT_LOCK (mix);
  walk = element->sinkpads;

  i = mix->frames->len;
  g_ptr_array_set_size (mix->frames, element->numsinkpads);
  for (; i < element->numsinkpads; i++)
    mix->frames->pdata[i] = g_slice_new0 (GstGLStereoMixFrameData);
  while (walk) {
    GstGLMixerPad *pad = GST_GL_MIXER_PAD (walk->data);
    GstVideoAggregatorPad *vaggpad = walk->data;
    GstGLStereoMixFrameData *frame;

    GST_LOG_OBJECT (mix, "Checking pad %" GST_PTR_FORMAT, vaggpad);

    frame = g_ptr_array_index (mix->frames, array_index);
    frame->base.pad = pad;
    frame->buf = NULL;

    walk = g_list_next (walk);

    if (vaggpad->buffer != NULL) {
      frame->buf = vaggpad->buffer;

      GST_DEBUG_OBJECT (pad, "Got buffer %" GST_PTR_FORMAT, frame->buf);
    } else {
      GST_LOG_OBJECT (mix, "No buffer on pad %" GST_PTR_FORMAT, vaggpad);
      missing_buffer = TRUE;
    }
    ++array_index;
  }
  if (missing_buffer) {
    /* We're still waiting for a buffer to turn up on at least one input */
    GST_WARNING_OBJECT (mix, "Not generating output - need more input buffers");
    res = TRUE;
    goto out;
  }

  /* Copy GL memory from each input frame to the output */
  if (!gst_gl_stereo_mix_process_frames (mix, mix->frames)) {
    GST_LOG_OBJECT (mix, "Failed to process frames to output");
    goto out;
  }

  if (mix->primary_out == NULL)
    goto out;

  res = TRUE;

out:
  GST_OBJECT_UNLOCK (mix);

  return res;
}