C++ (Cpp) gst_vtdec_sample_buffer_from示例

示例#1

文件： vtdec.c 项目： cbetz421/gst-plugins-bad

static GstFlowReturn
gst_vtdec_decode_buffer (GstVTDec * self, GstBuffer * buf)
{
  GstVTApi *vt = self->ctx->vt;
  CMSampleBufferRef sbuf;
  VTStatus status;
  VTDecodeFrameFlags frame_flags = 0;
  GstFlowReturn ret = GST_FLOW_OK;

  sbuf = gst_vtdec_sample_buffer_from (self, buf);

  self->flush = FALSE;
  status = vt->VTDecompressionSessionDecodeFrame (self->session, sbuf,
      frame_flags, buf, NULL);
  if (status != 0) {
    GST_WARNING_OBJECT (self, "VTDecompressionSessionDecodeFrame returned %d",
        status);
  }

  status = vt->VTDecompressionSessionWaitForAsynchronousFrames (self->session);
  if (status != 0) {
    GST_WARNING_OBJECT (self,
        "VTDecompressionSessionWaitForAsynchronousFrames returned %d", status);
  }

  CFRelease (sbuf);
  gst_buffer_unref (buf);

  if (self->flush) {
    if (!gst_vtdec_negotiate_downstream (self)) {
      ret = GST_FLOW_NOT_NEGOTIATED;
      goto error;
    }

    g_queue_sort (self->cur_outbufs, (GCompareDataFunc) _sort_buffers, NULL);
    while (!g_queue_is_empty (self->cur_outbufs)) {
      buf = g_queue_pop_head (self->cur_outbufs);
      GST_LOG_OBJECT (self, "Pushing buffer with PTS:%" GST_TIME_FORMAT,
          GST_TIME_ARGS (GST_BUFFER_PTS (buf)));
      ret = gst_pad_push (self->srcpad, buf);
      if (ret != GST_FLOW_OK) {
        goto error;
      }
    }
  };

exit:
  return ret;

error:
  {
    g_queue_free_full (self->cur_outbufs, (GDestroyNotify) gst_buffer_unref);
    self->cur_outbufs = g_queue_new ();
    goto exit;
  }
}

示例#2

文件： vtdec.c 项目： lubing521/gst-embedded-builder

static GstFlowReturn
gst_vtdec_decode_buffer (GstVTDec * self, GstBuffer * buf)
{
  GstVTApi *vt = self->ctx->vt;
  CMSampleBufferRef sbuf;
  VTStatus status;
  GstFlowReturn ret = GST_FLOW_OK;
  guint i;

  self->cur_inbuf = buf;
  sbuf = gst_vtdec_sample_buffer_from (self, buf);

  status = vt->VTDecompressionSessionDecodeFrame (self->session, sbuf, 0, 0, 0);
  if (status != 0) {
    GST_WARNING_OBJECT (self, "VTDecompressionSessionDecodeFrame returned %d",
        status);
  }

  status = vt->VTDecompressionSessionWaitForAsynchronousFrames (self->session);
  if (status != 0) {
    GST_WARNING_OBJECT (self,
        "VTDecompressionSessionWaitForAsynchronousFrames returned %d", status);
  }

  self->ctx->cm->FigSampleBufferRelease (sbuf);
  self->cur_inbuf = NULL;
  gst_buffer_unref (buf);

  if (self->cur_outbufs->len > 0) {
    if (!gst_vtdec_negotiate_downstream (self))
      ret = GST_FLOW_NOT_NEGOTIATED;
  }

  for (i = 0; i != self->cur_outbufs->len; i++) {
    GstBuffer *buf = g_ptr_array_index (self->cur_outbufs, i);

    if (ret == GST_FLOW_OK) {
      ret = gst_pad_push (self->srcpad, buf);
    } else {
      gst_buffer_unref (buf);
    }
  }
  g_ptr_array_set_size (self->cur_outbufs, 0);

  return ret;
}