int vorbis_encode_setup_managed(vorbis_info *vi,
long channels,
long rate,
long max_bitrate,
long nominal_bitrate,
long min_bitrate){
codec_setup_info *ci;
highlevel_encode_setup *hi;
double tnominal;
if(rate<=0) return OV_EINVAL;
ci=vi->codec_setup;
hi=&ci->hi;
tnominal=nominal_bitrate;
if(nominal_bitrate<=0.){
if(max_bitrate>0.){
if(min_bitrate>0.)
nominal_bitrate=(max_bitrate+min_bitrate)*.5;
else
nominal_bitrate=max_bitrate*.875;
}else{
if(min_bitrate>0.){
nominal_bitrate=min_bitrate;
}else{
return(OV_EINVAL);
}
}
}
hi->req=nominal_bitrate;
hi->setup=get_setup_template(channels,rate,nominal_bitrate,1,&hi->base_setting);
if(!hi->setup)return OV_EIMPL;
vorbis_encode_setup_setting(vi,channels,rate);
/* initialize management with sane defaults */
hi->coupling_p=1;
hi->managed=1;
hi->bitrate_min=min_bitrate;
hi->bitrate_max=max_bitrate;
hi->bitrate_av=tnominal;
hi->bitrate_av_damp=1.5f; /* full range in no less than 1.5 second */
hi->bitrate_reservoir=nominal_bitrate*2;
hi->bitrate_reservoir_bias=.1; /* bias toward hoarding bits */
return(0);
}
int vorbis_encode_setup_managed(vorbis_info *vi,
long channels,
long rate,
long max_bitrate,
long nominal_bitrate,
long min_bitrate){
codec_setup_info *ci = vi->codec_setup;
highlevel_encode_setup *hi = &ci->hi;
double tnominal = nominal_bitrate;
int ret = 0;
if (nominal_bitrate <= 0.0f){
if (max_bitrate > 0.0f){
if (min_bitrate > 0.0f)
nominal_bitrate = (long)((max_bitrate + min_bitrate)*0.5f);
else
nominal_bitrate = (long)(max_bitrate*0.875f);
}
else{
if (min_bitrate > 0.0f){
nominal_bitrate = min_bitrate;
}
else{
return(OV_EINVAL);
}
}
}
get_setup_template(vi, channels, rate, nominal_bitrate, 1);
if (!hi->setup)return OV_EIMPL;
ret = vorbis_encode_setup_setting(vi, channels, rate);
if (ret){
vorbis_info_clear(vi);
return ret;
}
/* initialize management with sane defaults */
hi->managed = 1;
hi->bitrate_min = min_bitrate;
hi->bitrate_max = max_bitrate;
hi->bitrate_av = (long)tnominal;
hi->bitrate_av_damp = 1.5f; /* full range in no less than 1.5 second */
hi->bitrate_reservoir = nominal_bitrate * 2;
hi->bitrate_reservoir_bias = 0.1f; /* bias toward hoarding bits */
return(ret);
}
int vorbis_encode_setup_vbr(vorbis_info *vi,
long channels,
long rate,
float quality){
codec_setup_info *ci=vi->codec_setup;
highlevel_encode_setup *hi=&ci->hi;
quality+=.0000001;
if(quality>=1.)quality=.9999;
get_setup_template(vi,channels,rate,quality,0);
if(!hi->setup)return OV_EIMPL;
return vorbis_encode_setup_setting(vi,channels,rate);
}
int vorbis_encode_setup_managed(vorbis_info *vi,
long channels,
long rate,
long max_bitrate,
long nominal_bitrate,
long min_bitrate){
codec_setup_info *ci=vi->codec_setup;
highlevel_encode_setup *hi=&ci->hi;
double tnominal=nominal_bitrate;
int ret=0;
if(nominal_bitrate<=0.){
if(max_bitrate>0.){
nominal_bitrate=max_bitrate*.875;
}else{
if(min_bitrate>0.){
nominal_bitrate=min_bitrate;
}else{
return(OV_EINVAL);
}
}
}
get_setup_template(vi,channels,rate,nominal_bitrate,1);
if(!hi->setup)return OV_EIMPL;
ret=vorbis_encode_setup_setting(vi,channels,rate);
if(ret){
vorbis_info_clear(vi);
return ret;
}
/* initialize management with sane defaults */
/* initialize management with sane defaults */
hi->managed=1;
hi->bitrate_av_window=4.;
hi->bitrate_av_window_center=.5;
hi->bitrate_limit_window=2.;
hi->bitrate_min=min_bitrate;
hi->bitrate_max=max_bitrate;
hi->bitrate_av_lo=tnominal;
hi->bitrate_av_hi=tnominal;
return(ret);
}
int vorbis_encode_setup_vbr(vorbis_info *vi,
long channels,
long rate,
float quality){
codec_setup_info *ci=vi->codec_setup;
highlevel_encode_setup *hi=&ci->hi;
quality+=.0000001;
if(quality>=1.)quality=.9999;
hi->req=quality;
hi->setup=get_setup_template(channels,rate,quality,0,&hi->base_setting);
if(!hi->setup)return OV_EIMPL;
vorbis_encode_setup_setting(vi,channels,rate);
hi->managed=0;
hi->coupling_p=1;
return 0;
}
int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg){
if(vi){
codec_setup_info *ci=vi->codec_setup;
highlevel_encode_setup *hi=&ci->hi;
int setp=(number&0xf); /* a read request has a low nibble of 0 */
if(setp && hi->set_in_stone)return(OV_EINVAL);
switch(number){
/* now deprecated *****************/
case OV_ECTL_RATEMANAGE_GET:
{
struct ovectl_ratemanage_arg *ai=
(struct ovectl_ratemanage_arg *)arg;
ai->management_active=hi->managed;
ai->bitrate_hard_window=ai->bitrate_av_window=
(double)hi->bitrate_reservoir/vi->rate;
ai->bitrate_av_window_center=1.;
ai->bitrate_hard_min=hi->bitrate_min;
ai->bitrate_hard_max=hi->bitrate_max;
ai->bitrate_av_lo=hi->bitrate_av;
ai->bitrate_av_hi=hi->bitrate_av;
}
return(0);
/* now deprecated *****************/
case OV_ECTL_RATEMANAGE_SET:
{
struct ovectl_ratemanage_arg *ai=
(struct ovectl_ratemanage_arg *)arg;
if(ai==NULL){
hi->managed=0;
}else{
hi->managed=ai->management_active;
vorbis_encode_ctl(vi,OV_ECTL_RATEMANAGE_AVG,arg);
vorbis_encode_ctl(vi,OV_ECTL_RATEMANAGE_HARD,arg);
}
}
return 0;
/* now deprecated *****************/
case OV_ECTL_RATEMANAGE_AVG:
{
struct ovectl_ratemanage_arg *ai=
(struct ovectl_ratemanage_arg *)arg;
if(ai==NULL){
hi->bitrate_av=0;
}else{
hi->bitrate_av=(ai->bitrate_av_lo+ai->bitrate_av_hi)*.5;
}
}
return(0);
/* now deprecated *****************/
case OV_ECTL_RATEMANAGE_HARD:
{
struct ovectl_ratemanage_arg *ai=
(struct ovectl_ratemanage_arg *)arg;
if(ai==NULL){
hi->bitrate_min=0;
hi->bitrate_max=0;
}else{
hi->bitrate_min=ai->bitrate_hard_min;
hi->bitrate_max=ai->bitrate_hard_max;
hi->bitrate_reservoir=ai->bitrate_hard_window*
(hi->bitrate_max+hi->bitrate_min)*.5;
}
if(hi->bitrate_reservoir<128.)
hi->bitrate_reservoir=128.;
}
return(0);
/* replacement ratemanage interface */
case OV_ECTL_RATEMANAGE2_GET:
{
struct ovectl_ratemanage2_arg *ai=
(struct ovectl_ratemanage2_arg *)arg;
if(ai==NULL)return OV_EINVAL;
ai->management_active=hi->managed;
ai->bitrate_limit_min_kbps=hi->bitrate_min/1000;
ai->bitrate_limit_max_kbps=hi->bitrate_max/1000;
ai->bitrate_average_kbps=hi->bitrate_av/1000;
ai->bitrate_average_damping=hi->bitrate_av_damp;
ai->bitrate_limit_reservoir_bits=hi->bitrate_reservoir;
ai->bitrate_limit_reservoir_bias=hi->bitrate_reservoir_bias;
}
return (0);
case OV_ECTL_RATEMANAGE2_SET:
{
struct ovectl_ratemanage2_arg *ai=
(struct ovectl_ratemanage2_arg *)arg;
if(ai==NULL){
hi->managed=0;
}else{
/* sanity check; only catch invariant violations */
if(ai->bitrate_limit_min_kbps>0 &&
ai->bitrate_average_kbps>0 &&
ai->bitrate_limit_min_kbps>ai->bitrate_average_kbps)
return OV_EINVAL;
if(ai->bitrate_limit_max_kbps>0 &&
ai->bitrate_average_kbps>0 &&
ai->bitrate_limit_max_kbps<ai->bitrate_average_kbps)
return OV_EINVAL;
if(ai->bitrate_limit_min_kbps>0 &&
ai->bitrate_limit_max_kbps>0 &&
ai->bitrate_limit_min_kbps>ai->bitrate_limit_max_kbps)
return OV_EINVAL;
if(ai->bitrate_average_damping <= 0.)
return OV_EINVAL;
if(ai->bitrate_limit_reservoir_bits < 0)
return OV_EINVAL;
if(ai->bitrate_limit_reservoir_bias < 0.)
return OV_EINVAL;
if(ai->bitrate_limit_reservoir_bias > 1.)
return OV_EINVAL;
hi->managed=ai->management_active;
hi->bitrate_min=ai->bitrate_limit_min_kbps * 1000;
hi->bitrate_max=ai->bitrate_limit_max_kbps * 1000;
hi->bitrate_av=ai->bitrate_average_kbps * 1000;
hi->bitrate_av_damp=ai->bitrate_average_damping;
hi->bitrate_reservoir=ai->bitrate_limit_reservoir_bits;
hi->bitrate_reservoir_bias=ai->bitrate_limit_reservoir_bias;
}
}
return 0;
case OV_ECTL_LOWPASS_GET:
{
double *farg=(double *)arg;
*farg=hi->lowpass_kHz;
}
return(0);
case OV_ECTL_LOWPASS_SET:
{
double *farg=(double *)arg;
hi->lowpass_kHz=*farg;
if(hi->lowpass_kHz<2.)hi->lowpass_kHz=2.;
if(hi->lowpass_kHz>99.)hi->lowpass_kHz=99.;
hi->lowpass_altered=1;
}
return(0);
case OV_ECTL_IBLOCK_GET:
{
double *farg=(double *)arg;
*farg=hi->impulse_noisetune;
}
return(0);
case OV_ECTL_IBLOCK_SET:
{
double *farg=(double *)arg;
hi->impulse_noisetune=*farg;
if(hi->impulse_noisetune>0.)hi->impulse_noisetune=0.;
if(hi->impulse_noisetune<-15.)hi->impulse_noisetune=-15.;
}
return(0);
case OV_ECTL_COUPLING_GET:
{
int *iarg=(int *)arg;
*iarg=hi->coupling_p;
}
return(0);
case OV_ECTL_COUPLING_SET:
{
const void *new_template;
double new_base=0.;
int *iarg=(int *)arg;
hi->coupling_p=((*iarg)!=0);
/* Fetching a new template can alter the base_setting, which
many other parameters are based on. Right now, the only
parameter drawn from the base_setting that can be altered
by an encctl is the lowpass, so that is explictly flagged
to not be overwritten when we fetch a new template and
recompute the dependant settings */
new_template = get_setup_template(hi->coupling_p?vi->channels:-1,
vi->rate,
hi->req,
hi->managed,
&new_base);
if(!hi->setup)return OV_EIMPL;
hi->setup=new_template;
hi->base_setting=new_base;
vorbis_encode_setup_setting(vi,vi->channels,vi->rate);
}
return(0);
}
return(OV_EIMPL);
}
return(OV_EINVAL);
}