int gst_video1_encode(struct videnc_state *st, bool update,
const struct vidframe *frame)
{
int err;
if (!st || !frame || frame->fmt != VID_FMT_YUV420P)
return EINVAL;
if (!st->streamer.valid ||
!vidsz_cmp(&st->encoder.size, &frame->size)) {
pipeline_close(st);
err = pipeline_init(st, &frame->size);
if (err) {
warning("gst_video: pipeline initialization failed\n");
return err;
}
st->encoder.size = frame->size;
}
if (update) {
debug("gst_video: gstreamer picture update"
", it's not implemented...\n");
}
/*
* Push frame into pipeline.
* Function call will return once frame has been processed completely.
*/
err = pipeline_push(st, frame);
return err;
}
/**
* process incoming pipeline input.
*
* the only input processed so far is from the video output stage to
* draw something into the image.
*/
void pipeline_process_input(CPipelinePacket &i_cPipelinePacket) {
if (i_cPipelinePacket.type_info_name
!= typeid(CDataDrawingInformation).name()) {
std::cerr
<< "ERROR: Only data drawing information allowed for image input stage"
<< std::endl;
exit(-1);
}
// unpack
CDataDrawingInformation *d = i_cPipelinePacket.getPayload<
CDataDrawingInformation>();
// handle package by drawing a circle
draw_circle(*d);
// push modifications on image to pipeline
pipeline_push();
}
