CoglPipeline *
cogl_gst_video_sink_get_pipeline (CoglGstVideoSink *vt)
{
CoglGstVideoSinkPrivate *priv;
g_return_val_if_fail (COGL_GST_IS_VIDEO_SINK (vt), NULL);
priv = vt->priv;
if (priv->pipeline == NULL)
{
priv->pipeline = cogl_pipeline_new (priv->ctx);
cogl_gst_video_sink_setup_pipeline (vt, priv->pipeline);
cogl_gst_video_sink_attach_frame (vt, priv->pipeline);
priv->frame_dirty = FALSE;
}
else if (priv->frame_dirty)
{
CoglPipeline *pipeline = cogl_pipeline_copy (priv->pipeline);
cogl_object_unref (priv->pipeline);
priv->pipeline = pipeline;
cogl_gst_video_sink_attach_frame (vt, pipeline);
priv->frame_dirty = FALSE;
}
return priv->pipeline;
}
static void
paint (CoglFramebuffer *fb,
const CoglGstRectangle *video_output,
void *user_data)
{
Data *data = user_data;
CoglPipeline *pipeline;
pipeline = cogl_pipeline_copy (data->pipeline);
cogl_gst_video_sink_attach_frame (data->sink, pipeline);
cogl_object_unref (data->pipeline);
data->pipeline = pipeline;
if (data->last_output_width != video_output->width ||
data->last_output_height != video_output->height)
{
int location =
cogl_pipeline_get_uniform_location (pipeline, "pixel_step");
if (location != -1)
{
float value[2] =
{
1.0f / video_output->width,
1.0f / video_output->height
};
cogl_pipeline_set_uniform_float (pipeline,
location,
2, /* n_components */
1, /* count */
value);
}
data->last_output_width = video_output->width;
data->last_output_height = video_output->height;
}
borders_draw (data->borders, fb, video_output);
cogl_framebuffer_draw_rectangle (fb,
pipeline,
video_output->x,
video_output->y,
video_output->x +
video_output->width,
video_output->y +
video_output->height);
}
