C++ (Cpp) GST_IS_VDP_VIDEO_BUFFERの例

コード例 #1

ファイル: gstvdpvideobuffer.c プロジェクト: zsx/ossbuild

void
gst_vdp_video_buffer_add_reference (GstVdpVideoBuffer * buffer,
    GstVdpVideoBuffer * buf)
{
  g_assert (GST_IS_VDP_VIDEO_BUFFER (buffer));
  g_assert (GST_IS_VDP_VIDEO_BUFFER (buf));

  gst_buffer_ref (GST_BUFFER (buf));
  buffer->refs = g_slist_prepend (buffer->refs, buf);
}

コード例 #2

ファイル: gstvdpvideobuffer.c プロジェクト: collects/gst-plugins-bad

gboolean
gst_vdp_video_buffer_upload (GstVdpVideoBuffer * video_buf, GstBuffer * src_buf,
    guint fourcc, gint width, gint height)
{
  guint8 *data[3];
  guint32 stride[3];
  VdpYCbCrFormat format;
  GstVdpDevice *device;
  VdpStatus status;

  g_return_val_if_fail (GST_IS_VDP_VIDEO_BUFFER (video_buf), FALSE);
  g_return_val_if_fail (GST_IS_BUFFER (src_buf), FALSE);

  switch (fourcc) {
    case GST_MAKE_FOURCC ('Y', 'V', '1', '2'):
    {
      data[0] = GST_BUFFER_DATA (src_buf) +
          gst_video_format_get_component_offset (GST_VIDEO_FORMAT_YV12,
          0, width, height);
      data[1] = GST_BUFFER_DATA (src_buf) +
          gst_video_format_get_component_offset (GST_VIDEO_FORMAT_YV12,
          2, width, height);
      data[2] = GST_BUFFER_DATA (src_buf) +
          gst_video_format_get_component_offset (GST_VIDEO_FORMAT_YV12,
          1, width, height);

      stride[0] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_YV12,
          0, width);
      stride[1] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_YV12,
          2, width);
      stride[2] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_YV12,
          1, width);

      format = VDP_YCBCR_FORMAT_YV12;
      break;
    }
    case GST_MAKE_FOURCC ('I', '4', '2', '0'):
    {
      data[0] = GST_BUFFER_DATA (src_buf) +
          gst_video_format_get_component_offset (GST_VIDEO_FORMAT_I420,
          0, width, height);
      data[1] = GST_BUFFER_DATA (src_buf) +
          gst_video_format_get_component_offset (GST_VIDEO_FORMAT_I420,
          2, width, height);
      data[2] = GST_BUFFER_DATA (src_buf) +
          gst_video_format_get_component_offset (GST_VIDEO_FORMAT_I420,
          1, width, height);

      stride[0] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_I420,
          0, width);
      stride[1] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_I420,
          2, width);
      stride[2] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_I420,
          1, width);

      format = VDP_YCBCR_FORMAT_YV12;
      break;
    }
    case GST_MAKE_FOURCC ('N', 'V', '1', '2'):
    {
      data[0] = GST_BUFFER_DATA (src_buf);
      data[1] = GST_BUFFER_DATA (src_buf) + width * height;

      stride[0] = width;
      stride[1] = width;

      format = VDP_YCBCR_FORMAT_NV12;
      break;
    }
    case GST_MAKE_FOURCC ('U', 'Y', 'V', 'Y'):
    {
      data[0] = GST_BUFFER_DATA (src_buf);

      stride[0] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_UYVY,
          0, width);

      format = VDP_YCBCR_FORMAT_UYVY;
      break;
    }
    case GST_MAKE_FOURCC ('Y', 'U', 'Y', '2'):
    {
      data[0] = GST_BUFFER_DATA (src_buf);

      stride[0] = gst_video_format_get_row_stride (GST_VIDEO_FORMAT_YUY2,
          0, width);

      format = VDP_YCBCR_FORMAT_YUYV;
      break;
    }
    default:
      return FALSE;
  }

  device = video_buf->device;
  status = device->vdp_video_surface_put_bits_ycbcr (video_buf->surface, format,
      (void *) data, stride);
  if (G_UNLIKELY (status != VDP_STATUS_OK)) {
    GST_ERROR_OBJECT (video_buf, "Couldn't push YUV data to VDPAU, "
        "Error returned from vdpau was: %s",
        device->vdp_get_error_string (status));
    return FALSE;
  }

  return TRUE;
}