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89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
/*
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Audio File Library
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Copyright (C) 2000, Michael Pruett <michael@68k.org>
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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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units.h
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This file defines the internal Unit and CompressionUnit
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structures for the Audio File Library.
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*/
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#ifndef UNIT_H
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#define UNIT_H
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#include "audiofile.h"
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#include "afinternal.h"
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struct AudioFormat;
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class FileModule;
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struct Unit
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{
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int fileFormat; /* AF_FILEFMT_... */
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const char *name; /* a 2-3 word name of the file format */
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const char *description; /* a more descriptive name for the format */
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const char *label; /* a 4-character label for the format */
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bool implemented; /* if implemented */
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AFfilesetup (*completesetup) (AFfilesetup setup);
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bool (*recognize) (File *fh);
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int defaultSampleFormat;
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int defaultSampleWidth;
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int compressionTypeCount;
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const int *compressionTypes;
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int markerCount;
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int instrumentCount;
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int loopPerInstrumentCount;
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int instrumentParameterCount;
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const InstParamInfo *instrumentParameters;
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};
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struct CompressionUnit
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{
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int compressionID; /* AF_COMPRESSION_... */
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bool implemented;
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const char *label; /* 4-character (approximately) label */
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const char *shortname; /* short name in English */
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const char *name; /* long name in English */
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double squishFactor; /* compression ratio */
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int nativeSampleFormat; /* AF_SAMPFMT_... */
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int nativeSampleWidth; /* sample width in bits */
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bool needsRebuffer; /* if there are chunk boundary requirements */
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bool multiple_of; /* can accept any multiple of chunksize */
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bool (*fmtok) (AudioFormat *format);
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FileModule *(*initcompress) (Track *track, File *fh,
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bool seekok, bool headerless, AFframecount *chunkframes);
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FileModule *(*initdecompress) (Track *track, File *fh,
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bool seekok, bool headerless, AFframecount *chunkframes);
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};
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#define _AF_NUM_UNITS 17
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#define _AF_NUM_COMPRESSION 7
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extern const Unit _af_units[_AF_NUM_UNITS];
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extern const CompressionUnit _af_compression[_AF_NUM_COMPRESSION];
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#endif /* UNIT_H */
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