C++ (Cpp) GstImxBlitterVideoTransformClass::are_video_infos_equal Examples

Example #1

File: video_transform.c Project: gale320/gstreamer-imx

static gboolean gst_imx_blitter_video_transform_set_caps(GstBaseTransform *transform, GstCaps *in, GstCaps *out)
{
	gboolean inout_info_equal;
	GstVideoInfo in_info, out_info;
	GstImxBlitterVideoTransform *blitter_video_transform = GST_IMX_BLITTER_VIDEO_TRANSFORM(transform);
	GstImxBlitterVideoTransformClass *klass = GST_IMX_BLITTER_VIDEO_TRANSFORM_CLASS(G_OBJECT_GET_CLASS(transform));
	GstImxCanvas *canvas = &(blitter_video_transform->canvas);
	GstImxRegion source_subset;

	g_assert(klass->are_video_infos_equal != NULL);
	g_assert(blitter_video_transform->blitter != NULL);

	if (!gst_video_info_from_caps(&in_info, in) || !gst_video_info_from_caps(&out_info, out))
	{
		GST_ERROR_OBJECT(transform, "caps are invalid");
		blitter_video_transform->inout_info_set = FALSE;
		return FALSE;
	}

	inout_info_equal = klass->are_video_infos_equal(blitter_video_transform, &in_info, &out_info);

	if (inout_info_equal)
		GST_DEBUG_OBJECT(transform, "input and output caps are equal");
	else
		GST_DEBUG_OBJECT(transform, "input and output caps are not equal:  input: %" GST_PTR_FORMAT "  output: %" GST_PTR_FORMAT, (gpointer)in, (gpointer)out);

	gst_imx_blitter_set_input_video_info(blitter_video_transform->blitter, &in_info);
	gst_imx_blitter_set_output_video_info(blitter_video_transform->blitter, &out_info);

	/* setting new caps changes the canvas, so recalculate it
	 * the recalculation here is done without any input cropping, so set
	 * last_frame_with_cropdata to FALSE, in case subsequent frames do
	 * contain crop metadata */

	blitter_video_transform->last_frame_with_cropdata = FALSE;

	/* the canvas always encompasses the entire output frame */
	canvas->outer_region.x1 = 0;
	canvas->outer_region.y1 = 0;
	canvas->outer_region.x2 = GST_VIDEO_INFO_WIDTH(&out_info);
	canvas->outer_region.y2 = GST_VIDEO_INFO_HEIGHT(&out_info);

	gst_imx_canvas_calculate_inner_region(canvas, &in_info);
	gst_imx_canvas_clip(canvas, &(canvas->outer_region), &in_info, NULL, &source_subset);

	gst_imx_blitter_set_input_region(blitter_video_transform->blitter, &source_subset);
	gst_imx_blitter_set_output_canvas(blitter_video_transform->blitter, canvas);

	blitter_video_transform->input_video_info = in_info;
	blitter_video_transform->output_video_info = out_info;
	blitter_video_transform->inout_info_equal = inout_info_equal;
	blitter_video_transform->inout_info_set = TRUE;

	return TRUE;
}

Example #2

File: blitter_video_transform.c Project: merics/gstreamer-imx

static gboolean gst_imx_blitter_video_transform_set_caps(GstBaseTransform *transform, GstCaps *in, GstCaps *out)
{
	gboolean inout_info_equal;
	GstVideoInfo in_info, out_info;
	GstImxBlitterVideoTransform *blitter_video_transform = GST_IMX_BLITTER_VIDEO_TRANSFORM(transform);
	GstImxBlitterVideoTransformClass *klass = GST_IMX_BLITTER_VIDEO_TRANSFORM_CLASS(G_OBJECT_GET_CLASS(transform));

	g_assert(klass->are_video_infos_equal != NULL);
	g_assert(blitter_video_transform->blitter != NULL);

	if (!gst_video_info_from_caps(&in_info, in) || !gst_video_info_from_caps(&out_info, out))
	{
		GST_ERROR_OBJECT(transform, "caps are invalid");
		blitter_video_transform->inout_info_set = FALSE;
		return FALSE;
	}

	inout_info_equal = klass->are_video_infos_equal(blitter_video_transform, &in_info, &out_info);

	if (inout_info_equal)
		GST_DEBUG_OBJECT(transform, "input and output caps are equal");
	else
		GST_DEBUG_OBJECT(transform, "input and output caps are not equal:  input: %" GST_PTR_FORMAT "  output: %" GST_PTR_FORMAT, (gpointer)in, (gpointer)out);

	if (!gst_imx_base_blitter_set_input_video_info(blitter_video_transform->blitter, &in_info))
	{
		GST_ERROR_OBJECT(transform, "could not use input caps: %" GST_PTR_FORMAT, (gpointer)in);
		blitter_video_transform->inout_info_set = FALSE;
		return FALSE;
	}

	blitter_video_transform->input_video_info = in_info;
	blitter_video_transform->output_video_info = out_info;
	blitter_video_transform->inout_info_equal = inout_info_equal;
	blitter_video_transform->inout_info_set = TRUE;

	return TRUE;
}