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2017-08-22 Fred Gleason <fredg@paravelsystems.com>

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* Implemented SEGUE transitions in rdrender(1).
This commit is contained in:
Fred Gleason
2017-08-22 17:40:41 -04:00
parent 6659660736
commit 3abb23a77a
7 changed files with 341 additions and 26 deletions
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99
utils/rdrender/mainloop.cpp
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@@ -18,9 +18,10 @@
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
#include <math.h>
#include <stdio.h>
#include <sndfile.h>
#include <vector>
#include <rdcart.h>
#include <rdcut.h>
@@ -32,7 +33,7 @@
int MainObject::MainLoop()
{
static float pcm[16384];
float *pcm=NULL;
QTime current_time=render_start_time;
// QDate current_date=render_start_date;
@@ -60,34 +61,60 @@ int MainObject::MainLoop()
}
//
// Iterate through the log
// Initialize the log
//
std::vector<LogLine *> lls;
for(int i=0;i<log_event->size();i++) {
RDLogLine *ll=log_event->logLine(i);
if(ll->type()==RDLogLine::Cart) {
RDCart *cart=new RDCart(ll->cartNumber());
if(cart->exists()&&(cart->type()==RDCart::Audio)) {
QString cutname;
if(cart->selectCut(&cutname,current_time)) {
RDCut *cut=new RDCut(cutname);
QString filename;
if(GetCutFile(cutname,cut->startPoint(),cut->endPoint(),&filename)) {
SNDFILE *sf_in=sf_open(filename,SFM_READ,&sf_info);
int n;
if(sf_in!=NULL) {
DeleteCutFile(filename);
while((n=sf_readf_float(sf_in,pcm,8192))>0) {
sf_writef_float(sf_out,pcm,n);
}
sf_close(sf_in);
}
}
delete cut;
}
lls.push_back(new LogLine(log_event->logLine(i),render_user,render_station,
render_system,render_config,render_channels));
}
lls.push_back(new LogLine(new RDLogLine(),render_user,render_station,
render_system,render_config,render_channels));
lls.back()->setTransType(RDLogLine::Play);
//
// Iterate through it
//
for(unsigned i=0;i<lls.size();i++) {
if((lls.at(i)->transType()==RDLogLine::Stop)&&
(lls.at(i)->timeType()!=RDLogLine::Hard)) {
Verbose(current_time,i,QString().sprintf("Unconditional STOP on %06u [",
lls.at(i)->cartNumber())+
lls.at(i)->title()+"]");
break;
}
if(lls.at(i)->open(current_time)) {
Verbose(current_time,i,
QString().sprintf("starting cart %06u [",lls.at(i)->cartNumber())+
lls.at(i)->title()+"]");
sf_count_t frames=0;
if((lls.at(i+1)->transType()==RDLogLine::Segue)&&
(lls.at(i)->cut()->segueStartPoint()>=0)) {
frames=FramesFromMsec(lls.at(i)->cut()->segueStartPoint()-
lls.at(i)->cut()->startPoint());
current_time=current_time.addMSecs(lls.at(i)->cut()->segueStartPoint()-
lls.at(i)->cut()->startPoint());
}
delete cart;
else {
frames=FramesFromMsec(lls.at(i)->cut()->endPoint()-
lls.at(i)->cut()->startPoint());
current_time=current_time.addMSecs(lls.at(i)->cut()->endPoint()-
lls.at(i)->cut()->startPoint());
}
pcm=new float[frames*render_channels];
memset(pcm,0,frames*render_channels);
for(unsigned j=0;j<i;j++) {
Sum(pcm,lls.at(j),frames);
}
Sum(pcm,lls.at(i),frames);
sf_writef_float(sf_out,pcm,frames);
delete pcm;
pcm=NULL;
lls.at(i)->setRamp(lls.at(i+1)->transType());
}
}
Verbose(current_time,lls.size()-1,"--- end of log ---");
//
// Clean up
@@ -95,3 +122,25 @@ int MainObject::MainLoop()
sf_close(sf_out);
return 0;
}
void MainObject::Sum(float *pcm_out,LogLine *ll,sf_count_t frames)
{
if(ll->handle()!=NULL) {
float *pcm=new float[frames*render_channels];
memset(pcm,0,frames*render_channels);
sf_count_t n=sf_readf_float(ll->handle(),pcm,frames);
for(sf_count_t i=0;i<n;i+=render_channels) {
double ratio=exp10(((double)i*ll->rampRate()+ll->rampLevel())/2000.0);
for(sf_count_t j=0;j<render_channels;j++) {
pcm_out[i*render_channels+j]+=ratio*pcm[i*render_channels+j];
}
}
ll->setRampLevel((double)n*ll->rampRate()+ll->rampLevel());
if(n<frames) {
ll->close();
}
delete pcm;
}
}