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cmProc4.h/c: Added cmRcdPlaySetLaSecs().

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Added comments.
Fixed bug in filling record buffer.
This commit is contained in:
kevin 2013-11-19 19:28:51 -08:00
parent 2cba573163
commit 198908dd47
2 changed files with 27 additions and 11 deletions
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28
cmProc4.c
View File

@ -4237,18 +4237,31 @@ cmRC_t cmRecdPlayRegisterFrag( cmRecdPlay* p, unsigned fragIdx, unsigne
return cmOkRC; return cmOkRC;
} }
cmRC_t cmRecdPlaySetLaSecs( cmRecdPlay* p, double curLaSecs )
{
p->curLaSmpCnt = floor(curLaSecs*p->srate);
return cmOkRC;
}
cmRC_t cmRecdPlayRewind( cmRecdPlay* p ) cmRC_t cmRecdPlayRewind( cmRecdPlay* p )
{ {
unsigned i; unsigned i;
// zero the look-ahead buffers
p->laSmpIdx = 0; p->laSmpIdx = 0;
for(i=0; i<p->chCnt; ++i)
cmVOS_Zero(p->laChs[i],p->maxLaSmpCnt);
// remove all the active players
while( p->plist != NULL ) while( p->plist != NULL )
cmRecdPlayEndPlay(p,p->plist->labelSymId); cmRecdPlayEndPlay(p,p->plist->labelSymId);
// remove all the active recorders
while( p->rlist != NULL ) while( p->rlist != NULL )
cmRecdPlayEndRecord(p,p->plist->labelSymId); cmRecdPlayEndRecord(p,p->rlist->labelSymId);
// rewind all the fragments play posn.
for(i=0; i<p->fragCnt; ++i) for(i=0; i<p->fragCnt; ++i)
p->frags[i].playIdx = 0; p->frags[i].playIdx = 0;
@ -4271,6 +4284,7 @@ cmRC_t cmRecdPlayBeginRecord( cmRecdPlay* p, unsigned labelSymId )
p->frags[i].rlink = p->rlist; p->frags[i].rlink = p->rlist;
p->rlist = p->frags + i; p->rlist = p->frags + i;
// handle LA buf longer than frag buf. // handle LA buf longer than frag buf.
int cpyCnt = cmMin(p->curLaSmpCnt,p->frags[i].allocCnt); int cpyCnt = cmMin(p->curLaSmpCnt,p->frags[i].allocCnt);
@ -4302,6 +4316,7 @@ cmRC_t cmRecdPlayBeginRecord( cmRecdPlay* p, unsigned labelSymId )
} }
p->frags[i].recdIdx = cpyCnt; p->frags[i].recdIdx = cpyCnt;
p->frags[i].playIdx = 0;
} }
@ -4407,7 +4422,7 @@ cmRC_t cmRecdPlayExec( cmRecdPlay* p, const cmSample_t** iChs, cmSample_
chCnt = cmMin(chCnt, p->chCnt); chCnt = cmMin(chCnt, p->chCnt);
//------------------------------------------------------------------- //-------------------------------------------------------------------
// copy incoming audio into the look-head buffers // copy incoming audio into the look-ahead buffers
// //
// if the number of incoming samples is longer than the look-head buffer // if the number of incoming samples is longer than the look-head buffer
@ -4418,7 +4433,7 @@ cmRC_t cmRecdPlayExec( cmRecdPlay* p, const cmSample_t** iChs, cmSample_
if( srcSmpCnt > p->maxLaSmpCnt ) if( srcSmpCnt > p->maxLaSmpCnt )
{ {
// advance incoming sample buffer so that there are maxLaSmpCnt samples remaining // advance incoming sample buffer so that there are maxLaSmpCnt samples remaining
srcOffs = smpCnt-p->maxLaSmpCnt; srcOffs = srcSmpCnt-p->maxLaSmpCnt;
srcSmpCnt = p->maxLaSmpCnt; // decrease the total samples to copy srcSmpCnt = p->maxLaSmpCnt; // decrease the total samples to copy
} }
@ -4457,10 +4472,10 @@ cmRC_t cmRecdPlayExec( cmRecdPlay* p, const cmSample_t** iChs, cmSample_
unsigned n = cmMin(fp->allocCnt - fp->recdIdx,smpCnt); unsigned n = cmMin(fp->allocCnt - fp->recdIdx,smpCnt);
unsigned i; unsigned i;
for(i=0; i<p->chCnt; ++i) for(i=0; i<p->chCnt; ++i)
{
cmVOS_Copy(fp->chArray[i] + fp->recdIdx, n, iChs[i] ); cmVOS_Copy(fp->chArray[i] + fp->recdIdx, n, iChs[i] );
fp->recdIdx += n; fp->recdIdx += n;
}
} }
//------------------------------------------------------------------- //-------------------------------------------------------------------
@ -4476,10 +4491,9 @@ cmRC_t cmRecdPlayExec( cmRecdPlay* p, const cmSample_t** iChs, cmSample_
unsigned i; unsigned i;
for(i=0; i<p->chCnt; ++i) for(i=0; i<p->chCnt; ++i)
{
cmVOS_MultVVS(oChs[i],n,fp->chArray[i] + fp->playIdx,gain); cmVOS_MultVVS(oChs[i],n,fp->chArray[i] + fp->playIdx,gain);
fp->playIdx += n; fp->playIdx += n;
}
// if a fade rate has been set then advance the fade phase // if a fade rate has been set then advance the fade phase
if(fp->fadeDbPerSec!=0.0) if(fp->fadeDbPerSec!=0.0)

2
cmProc4.h
View File

@ -665,6 +665,8 @@ extern "C" {
cmRC_t cmRecdPlayRegisterFrag( cmRecdPlay* p, unsigned fragIdx, unsigned labelSymId ); cmRC_t cmRecdPlayRegisterFrag( cmRecdPlay* p, unsigned fragIdx, unsigned labelSymId );
cmRC_t cmRecdPlaySetLaSecs( cmRecdPlay* p, double curLaSecs );
cmRC_t cmRecdPlayRewind( cmRecdPlay* p ); cmRC_t cmRecdPlayRewind( cmRecdPlay* p );
cmRC_t cmRecdPlayBeginRecord( cmRecdPlay* p, unsigned labelSymId ); cmRC_t cmRecdPlayBeginRecord( cmRecdPlay* p, unsigned labelSymId );
cmRC_t cmRecdPlayEndRecord( cmRecdPlay* p, unsigned labelSymId ); cmRC_t cmRecdPlayEndRecord( cmRecdPlay* p, unsigned labelSymId );