static int audio_bitrate_driver_execute_action(MSBitrateDriver *objbase, const MSRateControlAction *action){
MSAudioBitrateDriver *obj=(MSAudioBitrateDriver*)objbase;
ms_message("MSAudioBitrateDriver: executing action of type %s, value=%i",ms_rate_control_action_type_name(action->type),action->value);
if (action->type==MSRateControlActionDecreaseBitrate){
/*reducing bitrate of the codec actually doesn't work very well (not enough). Increasing ptime is much more efficient*/
if (inc_ptime(obj)==-1){
if (obj->nom_bitrate>0){
int cur_br=0;
int new_br;
if (obj->nom_bitrate==0){
if (ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&obj->nom_bitrate)!=0){
ms_message("MSAudioBitrateDriver: Encoder has nominal bitrate %i",obj->nom_bitrate);
}
obj->cur_bitrate=obj->nom_bitrate;
}
/*if max ptime is reached, then try to reduce the codec bitrate if possible */
if (ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&cur_br)!=0){
ms_message("AudioBitrateController: GET_BITRATE failed");
return 0;
}
new_br=cur_br-((cur_br*action->value)/100);
ms_message("MSAudioBitrateDriver: Attempting to reduce audio bitrate to %i",new_br);
if (ms_filter_call_method(obj->encoder,MS_FILTER_SET_BITRATE,&new_br)!=0){
ms_message("MSAudioBitrateDriver: SET_BITRATE failed, incrementing ptime");
inc_ptime(obj);
return 0;
}
new_br=0;
ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&new_br);
ms_message("MSAudioBitrateDriver: bitrate actually set to %i",new_br);
obj->cur_bitrate=new_br;
}
}
}else if (action->type==MSRateControlActionDecreasePacketRate){
inc_ptime(obj);
}else if (action->type==MSRateControlActionIncreaseQuality){
if (obj->cur_bitrate<obj->nom_bitrate){
ms_message("MSAudioBitrateDriver: increasing bitrate of codec");
if (ms_filter_call_method(obj->encoder,MS_FILTER_SET_BITRATE,&obj->nom_bitrate)!=0){
ms_message("MSAudioBitrateDriver: could not restore nominal codec bitrate (%i)",obj->nom_bitrate);
}else obj->cur_bitrate=obj->nom_bitrate;
}else if (obj->cur_ptime>obj->min_ptime){
obj->cur_ptime-=obj->min_ptime;
apply_ptime(obj);
}else return -1;
}
return 0;
}
static int audio_bitrate_driver_execute_action(MSBitrateDriver *objbase, const MSRateControlAction *action){
MSAudioBitrateDriver *obj=(MSAudioBitrateDriver*)objbase;
ms_message("MSAudioBitrateDriver: executing action of type %s, value=%i",ms_rate_control_action_type_name(action->type),action->value);
if (obj->nom_bitrate==0){
ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&obj->nom_bitrate);
if (obj->nom_bitrate==0){
ms_warning("MSAudioBitrateDriver: Not doing bitrate control on audio encoder, it does not seem to support that. Controlling ptime only.");
obj->nom_bitrate=-1;
}else
obj->cur_bitrate=obj->nom_bitrate;
}
if (obj->cur_ptime==0){
ms_filter_call_method(obj->encoder,MS_AUDIO_ENCODER_GET_PTIME,&obj->cur_ptime);
if (obj->cur_ptime==0){
ms_warning("MSAudioBitrateDriver: encoder %s does not implement MS_AUDIO_ENCODER_GET_PTIME. Consider to implement this method for better accuracy of rate control.",obj->encoder->desc->name);
obj->cur_ptime=obj->min_ptime;
}
}
if (action->type==MSRateControlActionDecreaseBitrate){
/*reducing bitrate of the codec isn't sufficient. Increasing ptime is much more efficient*/
if (inc_ptime(obj)==-1){
if (obj->nom_bitrate>0){
int cur_br=0;
int new_br;
/*if max ptime is reached, then try to reduce the codec bitrate if possible */
if (ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&cur_br)!=0){
ms_message("MSAudioBitrateDriver: GET_BITRATE failed");
return 0;
}
obj->cur_bitrate=cur_br;
new_br=cur_br-((cur_br*action->value)/100);
ms_message("MSAudioBitrateDriver: Attempting to reduce audio bitrate to %i",new_br);
if (ms_filter_call_method(obj->encoder,MS_FILTER_SET_BITRATE,&new_br)!=0){
ms_message("MSAudioBitrateDriver: SET_BITRATE failed, incrementing ptime");
inc_ptime(obj);
return 0;
}
new_br=0;
ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&new_br);
ms_message("MSAudioBitrateDriver: bitrate actually set to %i",new_br);
obj->cur_bitrate=new_br;
}
}
}else if (action->type==MSRateControlActionDecreasePacketRate){
inc_ptime(obj);
}else if (action->type==MSRateControlActionIncreaseQuality){
if (obj->nom_bitrate>0){
if (ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&obj->cur_bitrate)==0){
if (obj->cur_bitrate > 0 && obj->cur_bitrate<obj->nom_bitrate){
obj->cur_bitrate=(obj->cur_bitrate*140)/100;
if (obj->cur_bitrate> obj->nom_bitrate) obj->cur_bitrate=obj->nom_bitrate;
ms_message("MSAudioBitrateDriver: increasing bitrate of codec to %i",obj->cur_bitrate);
if (ms_filter_call_method(obj->encoder,MS_FILTER_SET_BITRATE,&obj->cur_bitrate)!=0){
ms_message("MSAudioBitrateDriver: could not set codec bitrate to %i",obj->cur_bitrate);
}else obj->cur_bitrate=obj->nom_bitrate; /* so that we do not attempt this anymore*/
return 0;
}
}else ms_warning("MSAudioBitrateDriver: MS_FILTER_GET_BITRATE failed.");
}
if (obj->cur_ptime>obj->min_ptime){
obj->cur_ptime-=obj->min_ptime;
apply_ptime(obj);
}else return -1;
}
return 0;
}
static int audio_bitrate_driver_execute_action(MSBitrateDriver *objbase, const MSRateControlAction *action){
MSAudioBitrateDriver *obj=(MSAudioBitrateDriver*)objbase;
ms_message("MSAudioBitrateDriver: executing action of type %s, value=%i",ms_rate_control_action_type_name(action->type),action->value);
if (obj->nom_bitrate==0){
ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&obj->nom_bitrate);
if (obj->nom_bitrate==0){
ms_warning("MSAudioBitrateDriver: Not doing bitrate control on audio encoder, it does not seem to support that. Controlling ptime only.");
obj->nom_bitrate=-1;
}else
obj->cur_bitrate=obj->nom_bitrate;
}
if (obj->cur_ptime==0 || ms_filter_has_method(obj->encoder,MS_AUDIO_ENCODER_GET_PTIME)){ /*always sync current ptime if possible*/
ms_filter_call_method(obj->encoder,MS_AUDIO_ENCODER_GET_PTIME,&obj->cur_ptime);
if (obj->cur_ptime==0){
ms_warning("MSAudioBitrateDriver: encoder %s does not implement MS_AUDIO_ENCODER_GET_PTIME. Consider to implement this method for better accuracy of rate control.",obj->encoder->desc->name);
obj->cur_ptime=obj->min_ptime;
}
}
if (action->type==MSRateControlActionDecreaseBitrate){
/*reducing bitrate of the codec isn't sufficient. Increasing ptime is much more efficient*/
if ((obj->encoder_caps & MS_AUDIO_ENCODER_CAP_AUTO_PTIME) || inc_ptime(obj)){
if (obj->nom_bitrate>0){
int cur_br=0;
int new_br;
/*if max ptime is reached, then try to reduce the codec bitrate if possible */
if (ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&cur_br)!=0){
ms_message("MSAudioBitrateDriver: GET_BITRATE failed");
return 0;
}
obj->cur_bitrate=cur_br;
new_br=cur_br-((cur_br*action->value)/100);
ms_message("MSAudioBitrateDriver: Attempting to reduce audio bitrate from %i to %i",cur_br,new_br);
if (ms_filter_call_method(obj->encoder,MS_FILTER_SET_BITRATE,&new_br)!=0){
ms_message("MSAudioBitrateDriver: SET_BITRATE failed, incrementing ptime");
return inc_ptime(obj);
} else {
rtp_session_set_target_upload_bandwidth(obj->session, new_br);
}
new_br=0;
ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&new_br);
ms_message("MSAudioBitrateDriver: bitrate actually set to %i",new_br);
obj->cur_bitrate=new_br;
}
}
}else if (action->type==MSRateControlActionDecreasePacketRate){
return inc_ptime(obj);
}else if (action->type==MSRateControlActionIncreaseQuality){
int ret=0;
if (!(obj->encoder_caps & MS_AUDIO_ENCODER_CAP_AUTO_PTIME)){
if (obj->cur_ptime>obj->min_ptime){
ret=dec_ptime(obj);
}
}
if (obj->nom_bitrate>0){
int cur_bitrate=0;
if (ms_filter_call_method(obj->encoder,MS_FILTER_GET_BITRATE,&cur_bitrate)==0){
if (cur_bitrate > 0 && cur_bitrate<obj->nom_bitrate){
obj->cur_bitrate=(obj->cur_bitrate*140)/100;
if (obj->cur_bitrate>= obj->nom_bitrate) {
obj->cur_bitrate=obj->nom_bitrate;
ret=-1;/*we reached the nominal value*/
}
ms_message("MSAudioBitrateDriver: increasing bitrate of codec to %i",obj->cur_bitrate);
if (ms_filter_call_method(obj->encoder,MS_FILTER_SET_BITRATE,&obj->cur_bitrate)!=0){
ms_message("MSAudioBitrateDriver: could not set codec bitrate to %i",obj->cur_bitrate);
}else {
rtp_session_set_target_upload_bandwidth(obj->session, obj->cur_bitrate);
}
}
}else ms_warning("MSAudioBitrateDriver: MS_FILTER_GET_BITRATE failed.");
}
return ret;
}
return 0;
}