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Timeline: Don't die if punch-in frame is before first block of recorded audio.

This commit is contained in:
Jonathan Moore Liles 2015-03-11 23:05:47 -07:00
parent 60059f4005
commit 0047df03fe
1 changed files with 41 additions and 22 deletions
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63
timeline/src/Engine/Record_DS.C
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@ -99,8 +99,8 @@ Record_DS::disk_thread ( void )
bool punching_out = false;
bool punched_in = false;
nframes_t bS = 0;
nframes_t bE = 0;
nframes_t bS = 0; /* block start */
nframes_t bE = 0; /* block end */
again:
@ -109,14 +109,14 @@ again:
punched_in = false;
punching_out = false;
nframes_t pS = _frame;
nframes_t pE = _stop_frame;
nframes_t pS = _frame; /* punch start */
nframes_t pE = _stop_frame; /* punch end */
if ( punching_in )
{
/* write remainder of buffer */
write_block( buf + ((pS - bS) * channels()),
bE - pS );
bE - pS );
punching_in = false;
punched_in = true;
@ -147,29 +147,48 @@ again:
frames_read += frames_to_read;
bE = _first_frame + frames_read;
punching_in = ! punched_in && bE > pS;
punching_out = punched_in && pE < bE;
if ( punching_out )
if ( ! punched_in && bS > pS )
{
write_block( buf,
pE - bS );
break;
/* we're supposed to be punching in but don't have data
until a later frame... write null data instead. FIXME:
it would probably be better to just have the record
threads running all the time so that there would always
have some actual data to write here */
sample_t nbuf[bS - pS];
memset(nbuf,0,bS - pS);
write_block(nbuf, pS - pS);
write_block(buf,frames_to_read);
punched_in = true;
punching_in = false;
}
else
if ( punching_in )
{
write_block( buf + ((pS - bS) * channels()),
bE - pS );
punching_in = ! punched_in && bE > pS;
punching_out = punched_in && pE < bE;
punching_in = false;
punched_in = true;
}
else if ( punched_in )
{
write_block( buf, bE - bS );
if ( punching_out )
{
write_block( buf,
pE - bS );
break;
}
else if ( punching_in )
{
assert( pS >= bS );
assert( bE >= pS );
write_block( buf + ((pS - bS) * channels()),
bE - pS );
punching_in = false;
punched_in = true;
}
else if ( punched_in )
{
write_block( buf, bE - bS );
}
}
}