static gboolean gst_imx_blitter_video_sink_set_caps(GstBaseSink *sink, GstCaps *caps)
{
gboolean ret;
GstVideoInfo video_info;
GstImxBlitterVideoSink *blitter_video_sink = GST_IMX_BLITTER_VIDEO_SINK(sink);
g_assert(blitter_video_sink != NULL);
g_assert(blitter_video_sink->blitter != NULL);
GST_IMX_BLITTER_VIDEO_SINK_LOCK(blitter_video_sink);
gst_video_info_init(&video_info);
if (!gst_video_info_from_caps(&video_info, caps))
{
GST_ERROR_OBJECT(blitter_video_sink, "could not set caps %" GST_PTR_FORMAT, (gpointer)caps);
ret = FALSE;
}
else
{
blitter_video_sink->input_video_info = video_info;
blitter_video_sink->canvas_needs_update = TRUE;
if (blitter_video_sink->blitter != NULL)
gst_imx_blitter_set_input_video_info(blitter_video_sink->blitter, &video_info);
ret = TRUE;
}
GST_IMX_BLITTER_VIDEO_SINK_UNLOCK(blitter_video_sink);
return ret;
}
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;
}
gboolean gst_imx_blitter_compositor_draw_frame(GstImxCompositor *compositor, GstVideoInfo const *input_info, GstImxRegion const *input_region, GstImxCanvas const *output_canvas, GstBuffer *input_frame, guint8 alpha)
{
gboolean ret = TRUE;
GstImxBlitterCompositor *blitter_compositor = GST_IMX_BLITTER_COMPOSITOR(compositor);
g_assert(blitter_compositor->blitter != NULL);
ret = ret && gst_imx_blitter_set_input_video_info(blitter_compositor->blitter, input_info);
ret = ret && gst_imx_blitter_set_input_region(blitter_compositor->blitter, input_region);
ret = ret && gst_imx_blitter_set_input_frame(blitter_compositor->blitter, input_frame);
ret = ret && gst_imx_blitter_set_output_canvas(blitter_compositor->blitter, output_canvas);
ret = ret && gst_imx_blitter_blit(blitter_compositor->blitter, alpha);
return ret;
}
