75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#include "../Audio_Sequence.H"
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#include "dsp.h"
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using namespace std;
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/**********/
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/* Engine */
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/**********/
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/* THREAD: IO */
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/** determine region coverage and fill /buf/ with interleaved samples
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* from /frame/ to /nframes/ for exactly /channels/ channels. */
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nframes_t
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Audio_Sequence::play ( sample_t *buf, nframes_t frame, nframes_t nframes, int channels )
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{
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sample_t *cbuf = new sample_t[ nframes ];
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memset( cbuf, 0, nframes * sizeof( sample_t ) );
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/* quick and dirty--let the regions figure out coverage for themselves */
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for ( list <Sequence_Widget *>::const_iterator i = _widgets.begin();
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i != _widgets.end(); ++i )
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{
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const Audio_Region *r = (Audio_Region*)(*i);
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for ( int i = channels; i--; )
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{
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int nfr;
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if ( ! ( nfr = r->read( cbuf, frame, nframes, i ) ) )
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/* error ? */
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continue;
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if ( channels == 1 )
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buffer_mix( buf, cbuf, nframes );
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else
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buffer_interleave_one_channel_and_mix( buf, cbuf, i, channels, nframes );
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}
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}
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delete[] cbuf;
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/* FIXME: bogus */
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return nframes;
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}
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/* /\* THREAD: RT *\/ */
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/* nframes_t */
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/* Audio_Sequence::process ( nframes_t nframes ) */
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/* { */
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/* return disktream->process( nframes ); */
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/* } */
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