xash3d-fwgs/engine/common/soundlib/snd_main.c

281 lines
6.0 KiB
C

/*
snd_main.c - load & save various sound formats
Copyright (C) 2010 Uncle Mike
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 3 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.
*/
#include "soundlib.h"
// global sound variables
sndlib_t sound;
void Sound_Reset( void )
{
// reset global variables
sound.width = sound.rate = 0;
sound.channels = sound.loopstart = 0;
sound.samples = sound.flags = 0;
sound.type = WF_UNKNOWN;
sound.wav = NULL;
sound.size = 0;
}
wavdata_t *SoundPack( void )
{
wavdata_t *pack = Mem_Calloc( host.soundpool, sizeof( wavdata_t ));
pack->buffer = sound.wav;
pack->width = sound.width;
pack->rate = sound.rate;
pack->type = sound.type;
pack->size = sound.size;
pack->loopStart = sound.loopstart;
pack->samples = sound.samples;
pack->channels = sound.channels;
pack->flags = sound.flags;
return pack;
}
/*
================
FS_LoadSound
loading and unpack to wav any known sound
================
*/
wavdata_t *FS_LoadSound( const char *filename, const byte *buffer, size_t size )
{
const char *ext = COM_FileExtension( filename );
string path, loadname;
qboolean anyformat = true;
fs_offset_t filesize = 0;
const loadwavfmt_t *format;
byte *f;
Sound_Reset(); // clear old sounddata
Q_strncpy( loadname, filename, sizeof( loadname ));
if( Q_stricmp( ext, "" ))
{
// we needs to compare file extension with list of supported formats
// and be sure what is real extension, not a filename with dot
for( format = sound.loadformats; format && format->formatstring; format++ )
{
if( !Q_stricmp( format->ext, ext ))
{
COM_StripExtension( loadname );
anyformat = false;
break;
}
}
}
// special mode: skip any checks, load file from buffer
if( filename[0] == '#' && buffer && size )
goto load_internal;
// now try all the formats in the selected list
for( format = sound.loadformats; format && format->formatstring; format++)
{
if( anyformat || !Q_stricmp( ext, format->ext ))
{
Q_sprintf( path, format->formatstring, loadname, "", format->ext );
f = FS_LoadFile( path, &filesize, false );
if( f && filesize > 0 )
{
if( format->loadfunc( path, f, filesize ))
{
Mem_Free(f); // release buffer
return SoundPack(); // loaded
}
else Mem_Free(f); // release buffer
}
}
}
load_internal:
for( format = sound.loadformats; format && format->formatstring; format++ )
{
if( anyformat || !Q_stricmp( ext, format->ext ))
{
if( buffer && size > 0 )
{
if( format->loadfunc( loadname, buffer, size ))
return SoundPack(); // loaded
}
}
}
if( filename[0] != '#' )
Con_DPrintf( S_WARN "FS_LoadSound: couldn't load \"%s\"\n", loadname );
return NULL;
}
/*
================
Sound_FreeSound
free WAV buffer
================
*/
void FS_FreeSound( wavdata_t *pack )
{
if( !pack ) return;
if( pack->buffer ) Mem_Free( pack->buffer );
Mem_Free( pack );
}
/*
================
FS_OpenStream
open and reading basic info from sound stream
================
*/
stream_t *FS_OpenStream( const char *filename )
{
const char *ext = COM_FileExtension( filename );
string path, loadname;
qboolean anyformat = true;
const streamfmt_t *format;
stream_t *stream;
Sound_Reset(); // clear old streaminfo
Q_strncpy( loadname, filename, sizeof( loadname ));
if( Q_stricmp( ext, "" ))
{
// we needs to compare file extension with list of supported formats
// and be sure what is real extension, not a filename with dot
for( format = sound.streamformat; format && format->formatstring; format++ )
{
if( !Q_stricmp( format->ext, ext ))
{
COM_StripExtension( loadname );
anyformat = false;
break;
}
}
}
// now try all the formats in the selected list
for( format = sound.streamformat; format && format->formatstring; format++)
{
if( anyformat || !Q_stricmp( ext, format->ext ))
{
Q_sprintf( path, format->formatstring, loadname, "", format->ext );
if(( stream = format->openfunc( path )) != NULL )
{
stream->format = format;
return stream; // done
}
}
}
Con_Reportf( "FS_OpenStream: couldn't open \"%s\"\n", loadname );
return NULL;
}
/*
================
FS_StreamInfo
get basic stream info
================
*/
wavdata_t *FS_StreamInfo( stream_t *stream )
{
static wavdata_t info;
if( !stream ) return NULL;
// fill structure
info.loopStart = -1;
info.rate = stream->rate;
info.width = stream->width;
info.channels = stream->channels;
info.flags = SOUND_STREAM;
info.size = stream->size;
info.buffer = NULL;
info.samples = 0; // not actual for streams
info.type = stream->type;
return &info;
}
/*
================
FS_ReadStream
extract stream as wav-data and put into buffer, move file pointer
================
*/
int FS_ReadStream( stream_t *stream, int bytes, void *buffer )
{
if( !stream || !stream->format || !stream->format->readfunc )
return 0;
if( bytes <= 0 || buffer == NULL )
return 0;
return stream->format->readfunc( stream, bytes, buffer );
}
/*
================
FS_GetStreamPos
get stream position (in bytes)
================
*/
int FS_GetStreamPos( stream_t *stream )
{
if( !stream || !stream->format || !stream->format->getposfunc )
return -1;
return stream->format->getposfunc( stream );
}
/*
================
FS_SetStreamPos
set stream position (in bytes)
================
*/
int FS_SetStreamPos( stream_t *stream, int newpos )
{
if( !stream || !stream->format || !stream->format->setposfunc )
return -1;
return stream->format->setposfunc( stream, newpos );
}
/*
================
FS_FreeStream
close sound stream
================
*/
void FS_FreeStream( stream_t *stream )
{
if( !stream || !stream->format || !stream->format->freefunc )
return;
stream->format->freefunc( stream );
}