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/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* Sound file decoder for .wav, .mod, .ogg
* API is heavily influenced by SDL_sound.
*/
#ifndef DECODER_H
#define DECODER_H
#include "port.h"
#include "types.h"
#include "libs/uio.h"
#ifndef OVCODEC_NONE
# ifdef _MSC_VER
# pragma comment (lib, "vorbisfile.lib")
# endif /* _MSC_VER */
#endif /* OVCODEC_NONE */
typedef struct tfb_decoderformats
{
bool big_endian;
bool want_big_endian;
uint32 mono8;
uint32 stereo8;
uint32 mono16;
uint32 stereo16;
} TFB_DecoderFormats;
// forward-declare
typedef struct tfb_sounddecoder TFB_SoundDecoder;
#define THIS_PTR TFB_SoundDecoder*
typedef struct tfb_sounddecoderfunc
{
const char* (* GetName) (void);
bool (* InitModule) (int flags, const TFB_DecoderFormats*);
void (* TermModule) (void);
uint32 (* GetStructSize) (void);
int (* GetError) (THIS_PTR);
bool (* Init) (THIS_PTR);
void (* Term) (THIS_PTR);
bool (* Open) (THIS_PTR, uio_DirHandle *dir, const char *filename);
void (* Close) (THIS_PTR);
int (* Decode) (THIS_PTR, void* buf, sint32 bufsize);
// returns <0 on error, ==0 when no more data, >0 bytes returned
uint32 (* Seek) (THIS_PTR, uint32 pcm_pos);
// returns the pcm position set
uint32 (* GetFrame) (THIS_PTR);
} TFB_SoundDecoderFuncs;
#undef THIS_PTR
struct tfb_sounddecoder
{
// decoder virtual funcs - R/O
const TFB_SoundDecoderFuncs *funcs;
// public R/O, set by decoder
uint32 format;
uint32 frequency;
float length; // total length in seconds
bool is_null;
bool need_swap;
// public R/O, set by wrapper
void *buffer;
uint32 buffer_size;
sint32 error;
uint32 bytes_per_samp;
// public R/W
bool looping;
// semi-private
uio_DirHandle *dir;
char *filename;
uint32 pos;
uint32 start_sample;
uint32 end_sample;
};
// return values
enum
{
SOUNDDECODER_OK,
SOUNDDECODER_ERROR,
SOUNDDECODER_EOF,
};
typedef struct TFB_RegSoundDecoder TFB_RegSoundDecoder;
TFB_RegSoundDecoder* SoundDecoder_Register (const char* fileext,
TFB_SoundDecoderFuncs* decvtbl);
void SoundDecoder_Unregister (TFB_RegSoundDecoder* regdec);
const TFB_SoundDecoderFuncs* SoundDecoder_Lookup (const char* fileext);
void SoundDecoder_SwapWords (uint16* data, uint32 size);
sint32 SoundDecoder_Init (int flags, TFB_DecoderFormats* formats);
void SoundDecoder_Uninit (void);
TFB_SoundDecoder* SoundDecoder_Load (uio_DirHandle *dir,
char *filename, uint32 buffer_size, uint32 startTime, sint32 runTime);
uint32 SoundDecoder_Decode (TFB_SoundDecoder *decoder);
uint32 SoundDecoder_DecodeAll (TFB_SoundDecoder *decoder);
float SoundDecoder_GetTime (TFB_SoundDecoder *decoder);
uint32 SoundDecoder_GetFrame (TFB_SoundDecoder *decoder);
void SoundDecoder_Seek (TFB_SoundDecoder *decoder, uint32 msecs);
void SoundDecoder_Rewind (TFB_SoundDecoder *decoder);
void SoundDecoder_Free (TFB_SoundDecoder *decoder);
const char* SoundDecoder_GetName (TFB_SoundDecoder *decoder);
#endif
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