void
Playback_DS::disk_thread ( void )
{
_thread.name( "Playback" );
DMESSAGE( "playback thread running" );
/* buffer to hold the interleaved data returned by the track reader */
sample_t *buf = buffer_alloc( _nframes * channels() * _disk_io_blocks );
sample_t *cbuf = buffer_alloc( _nframes );
const nframes_t nframes = _nframes;
nframes_t blocks_written;
while ( ! _terminate )
{
seek:
blocks_written = 0;
read_block( buf, nframes * _disk_io_blocks );
while ( blocks_written < _disk_io_blocks &&
wait_for_block() )
{
// lock(); // for seeking
if ( _pending_seek )
{
/* FIXME: non-RT-safe IO */
DMESSAGE( "performing seek to frame %lu", (unsigned long)_seek_frame );
_frame = _seek_frame;
_pending_seek = false;
flush();
goto seek;
}
/* might have received terminate signal while waiting for block */
if ( _terminate )
goto done;
// unlock(); // for seeking
/* deinterleave the buffer and stuff it into the per-channel ringbuffers */
const size_t block_size = nframes * sizeof( sample_t );
for ( int i = 0; i < channels(); i++ )
{
buffer_deinterleave_one_channel( cbuf,
buf + ( blocks_written * nframes * channels() ),
i,
channels(),
nframes );
while ( jack_ringbuffer_write_space( _rb[ i ] ) < block_size )
usleep( 100 * 1000 );
jack_ringbuffer_write( _rb[ i ], ((char*)cbuf), block_size );
}
blocks_written++;
}
}
done:
DMESSAGE( "playback thread terminating" );
free(buf);
free(cbuf);
// flush();
_terminate = false;
_thread.exit();
}
void
Record_DS::disk_thread ( void )
{
_thread.name( "Capture" );
DMESSAGE( "capture thread running..." );
const nframes_t nframes = _nframes;
/* buffer to hold the interleaved data returned by the track reader */
sample_t *buf = buffer_alloc( nframes * channels() * _disk_io_blocks );
sample_t *cbuf = buffer_alloc( nframes );
const size_t block_size = nframes * sizeof( sample_t );
nframes_t blocks_read = 0;
while ( wait_for_block() )
{
/* pull data from the per-channel ringbuffers and interlace it */
for ( int i = channels(); i--; )
{
while ( jack_ringbuffer_read_space( _rb[ i ] ) < block_size )
usleep( 10 * 1000 );
jack_ringbuffer_read( _rb[ i ], ((char*)cbuf), block_size );
buffer_interleave_one_channel( buf + ( blocks_read * nframes * channels() ),
cbuf,
i,
channels(),
nframes );
}
blocks_read++;
if ( blocks_read == _disk_io_blocks )
{
write_block( buf, nframes * _disk_io_blocks );
blocks_read = 0;
}
}
DMESSAGE( "capture thread terminating" );
/* flush what remains in the buffer out to disk */
{
while ( blocks_read-- > 0 || ( ! sem_trywait( &_blocks ) && errno != EAGAIN ) )
{
for ( int i = channels(); i--; )
{
jack_ringbuffer_read( _rb[ i ], (char*)cbuf, block_size );
buffer_interleave_one_channel( buf, cbuf, i, channels(), nframes );
}
const nframes_t frames_remaining = (_stop_frame - _frame ) - _frames_written;
if ( frames_remaining < nframes )
{
/* this is the last block, might be partial */
write_block( buf, frames_remaining );
break;
}
else
write_block( buf, nframes );
}
}
free(buf);
free(cbuf);
DMESSAGE( "finalzing capture" );
Track::Capture *c = _capture;
_capture = NULL;
/* now finalize the recording */
if ( c->audio_file )
track()->finalize( c, _stop_frame );
delete c;
flush();
_terminate = false;
DMESSAGE( "capture thread gone" );
_thread.exit();
}
void
Record_DS::disk_thread ( void )
{
_thread.name( "Capture" );
DMESSAGE( "capture thread running..." );
track()->record( _capture, _frame );
const nframes_t nframes = _nframes * _disk_io_blocks;
/* buffer to hold the interleaved data returned by the track reader */
sample_t *buf = new sample_t[ nframes * channels() ];
#ifndef AVOID_UNNECESSARY_COPYING
sample_t *cbuf = new sample_t[ nframes ];
#endif
const size_t block_size = nframes * sizeof( sample_t );
int blocks_ready = 0;
while ( wait_for_block() )
{
if ( ++blocks_ready < _disk_io_blocks )
continue;
else
blocks_ready = 0;
/* pull data from the per-channel ringbuffers and interlace it */
for ( int i = channels(); i--; )
{
#ifdef AVOID_UNNECESSARY_COPYING
/* interleave direcectly from the ringbuffer to avoid
* unnecessary copying */
jack_ringbuffer_data_t rbd[2];
memset( rbd, 0, sizeof( rbd ) );
jack_ringbuffer_get_read_vector( _rb[ i ], rbd );
if ( rbd[ 0 ].len >= block_size )
{
/* it'll all fit in one go */
buffer_interleave_one_channel( buf, (sample_t*)rbd[ 0 ].buf, i, channels(), nframes );
}
else if ( rbd[ 0 ].len + rbd[ 1 ].len >= block_size )
{
/* there's enough space in the ringbuffer, but it's not contiguous */
assert( ! ( rbd[ 0 ].len % sizeof( sample_t ) ) );
const nframes_t f = rbd[ 0 ].len / sizeof( sample_t );
/* do the first half */
buffer_deinterleave_one_channel( (sample_t*)rbd[ 0 ].buf, buf, i, channels(), f );
buffer_interleave_one_channel( buf, (sample_t*)rbd[ 0 ].buf, i, channels(), f );
assert( rbd[ 1 ].len >= ( nframes - f ) * sizeof( sample_t ) );
/* do the second half */
buffer_interleave_one_channel( buf + f, (sample_t*)rbd[ 0 ].buf, i, channels(), nframes - f );
}
else
++_xruns;
jack_ringbuffer_read_advance( _rb[ i ], block_size );
#else
if ( jack_ringbuffer_read( _rb[ i ], (char*)cbuf, block_size ) < block_size )
++_xruns;
buffer_interleave_one_channel( buf, cbuf, i, channels(), nframes );
#endif
}
write_block( buf, nframes );
}
DMESSAGE( "capture thread terminating" );
/* flush what remains in the buffer out to disk */
{
/* use JACk sized blocks for this last bit */
const nframes_t nframes = _nframes;
const size_t block_size = _nframes * sizeof( sample_t );
#ifdef AVOID_UNNECESSARY_COPYING
sample_t *cbuf = new sample_t[ nframes ];
#endif
while ( blocks_ready-- > 0 || ( ! sem_trywait( &_blocks ) && errno != EAGAIN ) )
{
for ( int i = channels(); i--; )
{
jack_ringbuffer_read( _rb[ i ], (char*)cbuf, block_size );
buffer_interleave_one_channel( buf, cbuf, i, channels(), nframes );
}
const nframes_t frames_remaining = (_stop_frame - _frame ) - _frames_written;
if ( frames_remaining < nframes )
{
/* this is the last block, might be partial */
write_block( buf, frames_remaining );
break;
}
else
write_block( buf, nframes );
}
#ifdef AVOID_UNNECESSARY_COPYING
delete[] cbuf;
#endif
}
delete[] buf;
#ifndef AVOID_UNNECESSARY_COPYING
delete[] cbuf;
#endif
DMESSAGE( "finalzing capture" );
Track::Capture *c = _capture;
_capture = NULL;
/* now finalize the recording */
track()->finalize( c, _stop_frame );
delete c;
_terminate = false;
DMESSAGE( "capture thread gone" );
_thread.exit();
}
void
Playback_DS::disk_thread ( void )
{
_thread.name( "Playback" );
DMESSAGE( "playback thread running" );
/* buffer to hold the interleaved data returned by the track reader */
sample_t *buf = new sample_t[ _nframes * channels() * _disk_io_blocks ];
#ifndef AVOID_UNNECESSARY_COPYING
sample_t *cbuf = new sample_t[ _nframes * _disk_io_blocks ];
#endif
int blocks_ready = 0;
const nframes_t nframes = _nframes * _disk_io_blocks;
while ( wait_for_block() )
{
// lock(); // for seeking
if ( seek_pending() )
{
/* FIXME: non-RT-safe IO */
DMESSAGE( "performing seek to frame %lu", (unsigned long)_pending_seek );
_frame = _pending_seek;
_pending_seek = -1;
blocks_ready = 0;
}
if ( ++blocks_ready < _disk_io_blocks )
{
/* wait for more space */
continue;
}
/* reset */
blocks_ready = 0;
read_block( buf, nframes );
// unlock(); // for seeking
/* deinterleave the buffer and stuff it into the per-channel ringbuffers */
const size_t block_size = nframes * sizeof( sample_t );
for ( int i = channels(); i--; )
{
#ifdef AVOID_UNNECESSARY_COPYING
/* deinterleave direcectly into the ringbuffer to avoid
* unnecessary copying */
jack_ringbuffer_data_t rbd[2];
memset( rbd, 0, sizeof( rbd ) );
jack_ringbuffer_get_write_vector( _rb[ i ], rbd );
if ( rbd[ 0 ].len >= block_size )
{
/* it'll all fit in one go */
buffer_deinterleave_one_channel( (sample_t*)rbd[ 0 ].buf, buf, i, channels(), nframes );
}
else if ( rbd[ 0 ].len + rbd[ 1 ].len >= block_size )
{
/* there's enough space in the ringbuffer, but it's not contiguous */
assert( ! ( rbd[ 0 ].len % sizeof( sample_t ) ) );
// assert( ! ( rbd[ 1 ].len % sizeof( sample_t ) ) );
const nframes_t f = rbd[ 0 ].len / sizeof( sample_t );
/* do the first half */
buffer_deinterleave_one_channel( (sample_t*)rbd[ 0 ].buf, buf, i, channels(), f );
assert( rbd[ 1 ].len >= ( nframes - f ) * sizeof( sample_t ) );
/* do the second half */
buffer_deinterleave_one_channel( (sample_t*)rbd[ 1 ].buf, buf + f, i, channels(), nframes - f );
}
else
++_xruns;
jack_ringbuffer_write_advance( _rb[ i ], block_size );
#else
buffer_deinterleave_one_channel( cbuf, buf, i, channels(), nframes );
if ( jack_ringbuffer_write( _rb[ i ], (char*)cbuf, block_size ) < block_size )
++_xruns;
#endif
}
}
DMESSAGE( "playback thread terminating" );
delete[] buf;
#ifndef AVOID_UNNECESSARY_COPYING
delete[] cbuf;
#endif
_terminate = false;
}