void compute_curve(VorbisPsy *psy, float *audio, float *curve)
{
int i;
float work[psy->n];
float scale=4.f/psy->n;
float scale_dB;
scale_dB=todB(scale);
/* window the PCM data; use a BH4 window, not vorbis */
for(i=0;i<psy->n;i++)
work[i]=audio[i] * psy->window[i];
{
static int seq=0;
//_analysis_output("win",seq,work,psy->n,0,0);
seq++;
}
/* FFT yields more accurate tonal estimation (not phase sensitive) */
spx_drft_forward(&psy->lookup,work);
/* magnitudes */
work[0]=scale_dB+todB(work[0]);
for(i=1;i<psy->n-1;i+=2){
float temp = work[i]*work[i] + work[i+1]*work[i+1];
work[(i+1)>>1] = scale_dB+.5f * todB(temp);
}
/* derive a noise curve */
_vp_noisemask(psy,work,curve);
#define SIDEL 12
for (i=0;i<SIDEL;i++)
{
curve[i]=curve[SIDEL];
}
#define SIDEH 12
for (i=0;i<SIDEH;i++)
{
curve[(psy->n>>1)-i-1]=curve[(psy->n>>1)-SIDEH];
}
for(i=0;i<((psy->n)>>1);i++)
curve[i] = fromdB(1.2*curve[i]+.2*i);
//curve[i] = fromdB(0.8*curve[i]+.35*i);
//curve[i] = fromdB(0.9*curve[i])*pow(1.0*i+45,1.3);
}
/* called only by playback thread */
time_linkage *mix_read(time_linkage *in,
time_linkage *inA, // reverb channel
time_linkage *inB){ // reverb channel
int i,j,k,outch=ms.out.channels;
int outactive[outch];
float peak[MIX_BLOCKS+5][input_ch];
float rms[MIX_BLOCKS+5][input_ch];
int bypass=1;
if(in->samples==0){
ms.out.samples=0;
return &ms.out;
}
memset(outactive,0,sizeof(outactive));
memset(peak,0,sizeof(peak));
memset(rms,0,sizeof(rms));
/* eliminate asynch change possibility */
memcpy(ms.curr,mix_set,sizeof(*mix_set)*input_ch);
/* fillstate here is only used for lazy initialization/reset */
if(ms.fillstate==0){
/* zero the cache */
for(i=0;i<input_ch;i++){
memset(ms.cacheP[i],0,sizeof(**ms.cacheP)*input_size);
memset(ms.cachePP[i],0,sizeof(**ms.cachePP)*input_size);
memset(ms.cachePA[i],0,sizeof(**ms.cachePA)*input_size);
memset(ms.cachePPA[i],0,sizeof(**ms.cachePPA)*input_size);
memset(ms.cachePB[i],0,sizeof(**ms.cachePB)*input_size);
memset(ms.cachePPB[i],0,sizeof(**ms.cachePPB)*input_size);
}
memcpy(ms.prev,ms.curr,sizeof(*mix_set)*input_ch);
ms.fillstate=1;
}
/* zero the output block; we'll me mixing into it input-by-input */
for(i=0;i<outch;i++)
memset(ms.out.data[i],0,sizeof(**ms.out.data)*input_size);
/* a bit of laziness that may actually save CPU time by avoiding
special-cases later */
for(i=0;i<input_ch;i++){
if(mute_channel_muted(in->active,i))
memset(in->data[i],0,sizeof(**in->data)*input_size);
if(mute_channel_muted(inA->active,i))
memset(inA->data[i],0,sizeof(**inA->data)*input_size);
if(mute_channel_muted(inB->active,i))
memset(inB->data[i],0,sizeof(**inB->data)*input_size);
}
/* input-by-input */
for(i=0;i<input_ch;i++){
int feedit=mixpanel_visible[i];
int feeditM=atten_visible;
/* master feedback is a bit of a pain; the metrics we need aren't
produced by any of the mixdowns below. Do it by hand */
if(feeditM){
float mix[input_size];
float att=fromdB(ms.curr[i].master_att * .1);
int del=rint(ms.curr[i].master_delay*.00001*input_rate);
float acc=0.;
if(!mute_channel_muted(in->active,i)){
memset(mix,0,sizeof(mix));
mixwork(in->data[i],ms.cacheP[i],ms.cachePP[i],
mix,att,del,0,att,del,0);
bypass=0;
for(j=0;j<input_size;j++){
float val=mix[j]*mix[j];
if(val>peak[0][i])peak[0][i]=val;
acc+=val;
}
rms[0][i]=acc/input_size;
}
acc=0.;
if(inA && !mute_channel_muted(inA->active,i)){
memset(mix,0,sizeof(mix));
mixwork(inA->data[i],ms.cachePA[i],ms.cachePPA[i],
mix,att,del,0,att,del,0);
bypass=0;
for(j=0;j<input_size;j++){
float val=mix[j]*mix[j];
if(val>peak[1][i])peak[1][i]=val;
acc+=val;
}
rms[1][i]=acc/input_size;
}
acc=0.;
if(inB && !mute_channel_muted(inB->active,i)){
memset(mix,0,sizeof(mix));
mixwork(inB->data[i],ms.cachePB[i],ms.cachePPB[i],
mix,att,del,0,att,del,0);
bypass=0;
for(j=0;j<input_size;j++){
float val=mix[j]*mix[j];
if(val>peak[2][i])peak[2][i]=val;
acc+=val;
}
rms[2][i]=acc/input_size;
}
}
/* placer settings; translate to final numbers */
int placer=ms.curr[i].placer_place;
int placerP=ms.prev[i].placer_place;
/* place mix */
{
int mixedA=0,mixedB=0;
float mixA[input_size],mixB[input_size];
for(j=0;j<OUTPUT_CHANNELS;j++){
int destA=ms.curr[i].placer_destA[j];
int destAP=ms.prev[i].placer_destA[j];
int destB=ms.curr[i].placer_destB[j];
int destBP=ms.prev[i].placer_destB[j];
if(destA || destAP){
outactive[j]=1;
if(!mixedA){
float relA=(placer>100 ? placer*.01-1. : 0.);
float relAP=(placerP>100 ? placerP*.01-1. : 0.);
float attA=fromdB((ms.curr[i].master_att + ms.curr[i].placer_att * relA)*.1);
float attAP=fromdB((ms.prev[i].master_att + ms.prev[i].placer_att * relAP)*.1);
int delA=rint((ms.curr[i].master_delay + ms.curr[i].placer_delay * relA)*.00001*input_rate);
int delAP=rint((ms.prev[i].master_delay + ms.prev[i].placer_delay * relAP)*.00001*input_rate);
float attA_r=fromdB(ms.curr[i].master_att*.1);
float attAP_r=fromdB(ms.prev[i].master_att*.1);
int delA_r=rint(ms.curr[i].master_delay*.00001*input_rate);
int delAP_r=rint(ms.prev[i].master_delay*.00001*input_rate);
memset(mixA,0,sizeof(mixA));
mixwork(in->data[i],ms.cacheP[i],ms.cachePP[i],
mixA,attA,delA,0,attAP,delAP,0);
mixwork(inA->data[i],ms.cachePA[i],ms.cachePPA[i],
mixA,attA_r,delA_r,0,attAP_r,delAP_r,0);
mixedA=1;
}
mixadd(mixA,ms.out.data[j],destA,destAP);
}
if(destB || destBP){
outactive[j]=1;
if(!mixedB){
float relB=(placer<100 ? 1.-placer*.01 : 0.);
float relBP=(placerP<100 ? 1.-placerP*.01 : 0.);
float attB=fromdB((ms.curr[i].master_att + ms.curr[i].placer_att * relB)*.1);
float attBP=fromdB((ms.prev[i].master_att + ms.prev[i].placer_att * relBP)*.1);
int delB=rint((ms.curr[i].master_delay + ms.curr[i].placer_delay * relB)*.00001*input_rate);
int delBP= rint((ms.prev[i].master_delay + ms.prev[i].placer_delay * relBP)*.00001*input_rate);
float attB_r=fromdB(ms.curr[i].master_att*.1);
float attBP_r=fromdB(ms.prev[i].master_att*.1);
int delB_r=rint(ms.curr[i].master_delay*.00001*input_rate);
int delBP_r= rint(ms.prev[i].master_delay*.00001*input_rate);
memset(mixB,0,sizeof(mixB));
mixwork(in->data[i],ms.cacheP[i],ms.cachePP[i],
mixB,attB,delB,0,attBP,delBP,0);
mixwork(inB->data[i],ms.cachePB[i],ms.cachePPB[i],
mixB,attB_r,delB_r,0,attBP_r,delBP_r,0);
mixedB=1;
}
mixadd(mixB,ms.out.data[j],destB,destBP);
}
}
/* feedback for A */
if(feedit){
float acc=0.;
bypass=0;
if(mixedA){
for(j=0;j<input_size;j++){
float val=mixA[j]*mixA[j];
if(val>peak[3][i])peak[3][i]=val;
acc+=val;
}
peak[3][i]=peak[3][i];
rms[3][i]=acc/input_size;
}
}
/* feedback for B */
if(feedit){
float acc=0.;
bypass=0;
if(mixedB){
for(j=0;j<input_size;j++){
float val=mixB[j]*mixB[j];
if(val>peak[4][i])peak[4][i]=val;
acc+=val;
}
peak[4][i]=peak[4][i];
rms[4][i]=acc/input_size;
}
}
}
/* direct block mix */
for(k=0;k<MIX_BLOCKS;k++){
float mix[input_size];
int sourceM=ms.curr[i].insert_source[k][0];
int sourceMP=ms.prev[i].insert_source[k][0];
int sourceA=ms.curr[i].insert_source[k][1];
int sourceAP=ms.prev[i].insert_source[k][1];
int sourceB=ms.curr[i].insert_source[k][2];
int sourceBP=ms.prev[i].insert_source[k][2];
float att=
fromdB((ms.curr[i].master_att +
ms.curr[i].insert_att[k])*.1);
int del=
rint((ms.curr[i].master_delay +
ms.curr[i].insert_delay[k])*.00001*input_rate);
float attP=
fromdB((ms.prev[i].master_att +
ms.prev[i].insert_att[k])*.1);
int delP=
rint((ms.prev[i].master_delay +
ms.prev[i].insert_delay[k])*.00001*input_rate);
if(sourceM || sourceMP ||
sourceA || sourceAP ||
sourceB || sourceBP){
memset(mix,0,sizeof(mix));
/* master */
if(sourceM || sourceMP)
mixwork(in->data[i],ms.cacheP[i],ms.cachePP[i],
mix,
(sourceM ? att : 0),
del,ms.curr[i].insert_invert[k],
(sourceMP ? attP : 0),
delP,ms.prev[i].insert_invert[k]);
/* reverbA */
if(sourceA || sourceAP)
if(inA)
mixwork(inA->data[i],ms.cachePA[i],ms.cachePPA[i],
mix,
(sourceA ? att : 0),
del,ms.curr[i].insert_invert[k],
(sourceAP ? attP : 0),
delP,ms.prev[i].insert_invert[k]);
/* reverbB */
if(sourceB || sourceBP)
if(inB)
mixwork(inB->data[i],ms.cachePB[i],ms.cachePPB[i],
mix,
(sourceB ? att : 0),
del,ms.curr[i].insert_invert[k],
(sourceBP ? attP : 0),
delP,ms.prev[i].insert_invert[k]);
/* mix into output */
for(j=0;j<OUTPUT_CHANNELS;j++){
int dest=ms.curr[i].insert_dest[k][j];
int destP=ms.prev[i].insert_dest[k][j];
if(dest || destP){
outactive[j]=1;
mixadd(mix,ms.out.data[j],dest,destP);
}
}
/* feedback */
if(feedit){
float acc=0.;
bypass=0;
for(j=0;j<input_size;j++){
float val=mix[j]*mix[j];
if(val>peak[5+k][i])peak[5+k][i]=val;
acc+=val;
}
peak[5+k][i]=peak[5+k][i];
rms[5+k][i]=acc/input_size;
}
}
}
/* rotate data cache */
{
float *temp=ms.cachePP[i];
ms.cachePP[i]=ms.cacheP[i];
ms.cacheP[i]=in->data[i];
in->data[i]=temp;
if(inA){
temp=ms.cachePPA[i];
ms.cachePPA[i]=ms.cachePA[i];
ms.cachePA[i]=inA->data[i];
inA->data[i]=temp;
}
if(inB){
temp=ms.cachePPB[i];
ms.cachePPB[i]=ms.cachePB[i];
ms.cachePB[i]=inB->data[i];
inB->data[i]=temp;
}
}
}
/* finish output data */
ms.out.samples=in->samples;
ms.out.active=0;
for(i=0;i<OUTPUT_CHANNELS;i++)
if(outactive[i])
ms.out.active|=(1<<i);
/* rotate settings cache */
{
mix_settings *temp=ms.curr;
ms.curr=ms.prev;
ms.prev=temp;
}
/* push feedback */
if(bypass){
mix_feedback *mf=
(mix_feedback *)feedback_new(&ms.feedpool,new_mix_feedback);
mf->bypass=1;
feedback_push(&ms.feedpool,(feedback_generic *)mf);
}else{
mix_feedback *mf=
(mix_feedback *)feedback_new(&ms.feedpool,new_mix_feedback);
if(!mf->peak){
mf->peak=malloc((MIX_BLOCKS+5)*sizeof(*mf->peak));
mf->rms=malloc((MIX_BLOCKS+5)*sizeof(*mf->rms));
for(i=0;i<MIX_BLOCKS+5;i++)
mf->rms[i]=malloc(input_ch*sizeof(**mf->rms));
for(i=0;i<MIX_BLOCKS+5;i++)
mf->peak[i]=malloc(input_ch*sizeof(**mf->peak));
}
for(i=0;i<MIX_BLOCKS+5;i++){
memcpy(mf->peak[i],peak[i],input_ch*sizeof(**peak));
memcpy(mf->rms[i],rms[i],input_ch*sizeof(**rms));
}
mf->bypass=0;
feedback_push(&ms.feedpool,(feedback_generic *)mf);
}
return &ms.out;
}