93 lines
2.3 KiB
C++
93 lines
2.3 KiB
C++
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/*
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Audio File Library
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Copyright (C) 1999-2000, Michael Pruett <michael@68k.org>
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Copyright (C) 2000, Silicon Graphics, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301 USA
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*/
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/*
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compression.cpp
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This file contains routines for configuring compressed audio.
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*/
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#include "config.h"
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#include <assert.h>
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#include "FileHandle.h"
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#include "Setup.h"
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#include "Track.h"
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#include "audiofile.h"
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#include "aupvlist.h"
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#include "units.h"
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#include "util.h"
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const CompressionUnit *_af_compression_unit_from_id (int compressionid)
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{
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for (int i=0; i<_AF_NUM_COMPRESSION; i++)
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if (_af_compression[i].compressionID == compressionid)
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return &_af_compression[i];
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_af_error(AF_BAD_COMPTYPE, "compression type %d not available", compressionid);
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return NULL;
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}
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int afGetCompression (AFfilehandle file, int trackid)
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{
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if (!_af_filehandle_ok(file))
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return -1;
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Track *track = file->getTrack(trackid);
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if (!track)
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return -1;
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return track->f.compressionType;
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}
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void afInitCompression (AFfilesetup setup, int trackid, int compression)
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{
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if (!_af_filesetup_ok(setup))
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return;
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TrackSetup *track = setup->getTrack(trackid);
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if (!track)
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return;
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if (!_af_compression_unit_from_id(compression))
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return;
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track->compressionSet = true;
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track->f.compressionType = compression;
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}
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#if 0
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int afGetCompressionParams (AFfilehandle file, int trackid,
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int *compression, AUpvlist pvlist, int numitems)
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{
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assert(file);
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assert(trackid == AF_DEFAULT_TRACK);
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}
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void afInitCompressionParams (AFfilesetup setup, int trackid,
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int compression, AUpvlist pvlist, int numitems)
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{
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assert(setup);
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assert(trackid == AF_DEFAULT_TRACK);
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}
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#endif
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