int ms_ticker_attach_multiple(MSTicker *ticker,MSFilter *f,...)
{
MSList *sources=NULL;
MSList *filters=NULL;
MSList *it;
MSList *total_sources=NULL;
va_list l;
va_start(l,f);
do{
if (f->ticker==NULL) {
filters=ms_filter_find_neighbours(f);
sources=get_sources(filters);
if (sources==NULL){
ms_fatal("No sources found around filter %s",f->desc->name);
ms_list_free(filters);
break;
}
/*run preprocess on each filter: */
for(it=filters;it!=NULL;it=it->next)
ms_filter_preprocess((MSFilter*)it->data,ticker);
ms_list_free(filters);
total_sources=ms_list_concat(total_sources,sources);
}else ms_message("Filter %s is already being scheduled; nothing to do.",f->desc->name);
}while ((f=va_arg(l,MSFilter*))!=NULL);
va_end(l);
if (total_sources){
ms_mutex_lock(&ticker->lock);
ticker->execution_list=ms_list_concat(ticker->execution_list,total_sources);
ms_mutex_unlock(&ticker->lock);
}
return 0;
}
int ms_ticker_attach(MSTicker *ticker,MSFilter *f)
{
MSList *sources=NULL;
MSList *filters=NULL;
MSList *it;
if (f->ticker!=NULL) {
ms_message("Filter %s is already being scheduled; nothing to do.",f->desc->name);
return 0;
}
find_filters(&filters,f);
sources=get_sources(filters);
if (sources==NULL){
ms_fatal("No sources found around filter %s",f->desc->name);
ms_list_free(filters);
return -1;
}
/*run preprocess on each filter: */
for(it=filters;it!=NULL;it=it->next)
ms_filter_preprocess((MSFilter*)it->data,ticker);
ms_mutex_lock(&ticker->lock);
ticker->execution_list=ms_list_concat(ticker->execution_list,sources);
ms_mutex_unlock(&ticker->lock);
ms_list_free(filters);
return 0;
}
/*this function must be called from the MSTicker thread:
it replaces one filter by another one.
This is a dirty hack that works anyway.
It would be interesting to have something that does the job
simplier within the MSTicker api
*/
void video_stream_change_decoder(VideoStream *stream, int payload){
RtpSession *session=stream->session;
RtpProfile *prof=rtp_session_get_profile(session);
PayloadType *pt=rtp_profile_get_payload(prof,payload);
if (pt!=NULL){
MSFilter *dec=ms_filter_create_decoder(pt->mime_type);
if (dec!=NULL){
ms_filter_unlink(stream->rtprecv, 0, stream->decoder, 0);
ms_filter_unlink(stream->decoder,0,stream->output,0);
ms_filter_postprocess(stream->decoder);
ms_filter_destroy(stream->decoder);
stream->decoder=dec;
if (pt->recv_fmtp!=NULL)
ms_filter_call_method(stream->decoder,MS_FILTER_ADD_FMTP,(void*)pt->recv_fmtp);
ms_filter_link (stream->rtprecv, 0, stream->decoder, 0);
ms_filter_link (stream->decoder,0 , stream->output, 0);
ms_filter_preprocess(stream->decoder,stream->ticker);
}else{
ms_warning("No decoder found for %s",pt->mime_type);
}
}else{
ms_warning("No payload defined with number %i",payload);
}
}
/**
* This function must be called from the MSTicker thread:
* it replaces one filter by another one.
* This is a dirty hack that works anyway.
* It would be interesting to have something that does the job
* more easily within the MSTicker API.
*/
static void media_stream_change_decoder(MediaStream *stream, int payload) {
RtpSession *session = stream->sessions.rtp_session;
RtpProfile *prof = rtp_session_get_profile(session);
PayloadType *pt = rtp_profile_get_payload(prof, payload);
if (stream->decoder == NULL){
ms_message("media_stream_change_decoder(): ignored, no decoder.");
return;
}
if (pt != NULL){
MSFilter *dec;
if (stream->type == VideoStreamType){
/* Q: why only video ? this optimization seems relevant for audio too.*/
if ((stream->decoder != NULL) && (stream->decoder->desc->enc_fmt != NULL)
&& (strcasecmp(pt->mime_type, stream->decoder->desc->enc_fmt) == 0)) {
/* Same formats behind different numbers, nothing to do. */
return;
}
}
dec = ms_filter_create_decoder(pt->mime_type);
if (dec != NULL) {
MSFilter *nextFilter = stream->decoder->outputs[0]->next.filter;
ms_filter_unlink(stream->rtprecv, 0, stream->decoder, 0);
ms_filter_unlink(stream->decoder, 0, nextFilter, 0);
ms_filter_postprocess(stream->decoder);
ms_filter_destroy(stream->decoder);
stream->decoder = dec;
if (pt->recv_fmtp != NULL)
ms_filter_call_method(stream->decoder, MS_FILTER_ADD_FMTP, (void *)pt->recv_fmtp);
ms_filter_link(stream->rtprecv, 0, stream->decoder, 0);
ms_filter_link(stream->decoder, 0, nextFilter, 0);
ms_filter_preprocess(stream->decoder,stream->sessions.ticker);
} else {
ms_warning("No decoder found for %s", pt->mime_type);
}
} else {
ms_warning("No payload defined with number %i", payload);
}
}
/*this function must be called from the MSTicker thread:
it replaces one filter by another one.
This is a dirty hack that works anyway.
It would be interesting to have something that does the job
simplier within the MSTicker api
*/
void video_stream_change_decoder(VideoStream *stream, int payload){
RtpSession *session=stream->session;
RtpProfile *prof=rtp_session_get_profile(session);
PayloadType *pt=rtp_profile_get_payload(prof,payload);
if (pt!=NULL){
MSFilter *dec;
if (stream->decoder!=NULL && stream->decoder->desc->enc_fmt!=NULL &&
strcasecmp(pt->mime_type,stream->decoder->desc->enc_fmt)==0){
/* same formats behind different numbers, nothing to do */
return;
}
dec=ms_filter_create_decoder(pt->mime_type);
if (dec!=NULL){
ms_filter_unlink(stream->rtprecv, 0, stream->decoder, 0);
if (stream->tee2)
ms_filter_unlink(stream->decoder,0,stream->tee2,0);
else if(stream->output)
ms_filter_unlink(stream->decoder,0,stream->output,0);
ms_filter_postprocess(stream->decoder);
ms_filter_destroy(stream->decoder);
stream->decoder=dec;
if (pt->recv_fmtp!=NULL)
ms_filter_call_method(stream->decoder,MS_FILTER_ADD_FMTP,(void*)pt->recv_fmtp);
ms_filter_link (stream->rtprecv, 0, stream->decoder, 0);
if (stream->tee2)
ms_filter_link(stream->decoder,0,stream->tee2,0);
else if(stream->output)
ms_filter_link (stream->decoder,0 , stream->output, 0);
ms_filter_preprocess(stream->decoder,stream->ticker);
ms_filter_set_notify_callback(dec, event_cb, stream);
}else{
ms_warning("No decoder found for %s",pt->mime_type);
}
}else{
ms_warning("No payload defined with number %i",payload);
}
}
