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73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001-2004 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program 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
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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* $Header$
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*
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*/
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#ifndef SOUND_VOC_H
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#define SOUND_VOC_H
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#include "stdafx.h"
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#include "common/scummsys.h"
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class AudioStream;
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class File;
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#if !defined(__GNUC__)
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#pragma START_PACK_STRUCTS
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#endif
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struct VocFileHeader {
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uint8 desc[20];
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uint16 datablock_offset;
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uint16 version;
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uint16 id;
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} GCC_PACK;
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struct VocBlockHeader {
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uint8 blocktype;
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uint8 size[3];
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uint8 sr;
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uint8 pack;
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} GCC_PACK;
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#if !defined(__GNUC__)
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#pragma END_PACK_STRUCTS
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#endif
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/**
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* Take a sample rate parameter as it occurs in a VOC sound header, and
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* return the corresponding sample frequency.
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*
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* This method has special cases for the standard rates of 11025 and 22050 kHz,
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* which due to limitations of the format, cannot be encoded exactly in a VOC
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* file. As a consequence, many game files have sound data sampled with those
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* rates, but the VOC marks them incorrectly as 11111 or 22222 kHz. This code
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* works around that and "unrounds" the sampling rates.
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*/
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extern int getSampleRateFromVOCRate(int vocSR);
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extern byte *readVOCFromMemory(byte *ptr, int &size, int &rate, int &loops, int &begin_loop, int &end_loop);
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extern byte *loadVOCFile(File *file, int &size, int &rate);
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AudioStream *makeVOCStream(byte *ptr);
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AudioStream *makeVOCStream(File *file);
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#endif
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