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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
Copyright (C) 2000-2009 Darklegion Development
Copyright (C) 2005 Stuart Dalton (badcdev@gmail.com)
This file is part of Tremulous.
Tremulous 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.
Tremulous 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 Tremulous; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include "client.h"
#include "snd_codec.h"
static snd_codec_t *codecs;
/*
=================
S_FileExtension
=================
*/
static char *S_FileExtension(const char *fni)
{
// we should search from the ending to the last '/'
char *fn = (char *) fni + strlen(fni) - 1;
char *eptr = NULL;
while(*fn != '/' && fn != fni)
{
if(*fn == '.')
{
eptr = fn;
break;
}
fn--;
}
return eptr;
}
/*
=================
S_FindCodecForFile
Select an appropriate codec for a file based on its extension
=================
*/
static snd_codec_t *S_FindCodecForFile(const char *filename)
{
char *ext = S_FileExtension(filename);
snd_codec_t *codec = codecs;
if(!ext)
{
// No extension - auto-detect
while(codec)
{
char fn[MAX_QPATH];
// there is no extension so we do not need to subtract 4 chars
Q_strncpyz(fn, filename, MAX_QPATH);
COM_DefaultExtension(fn, MAX_QPATH, codec->ext);
// Check it exists
if(FS_ReadFile(fn, NULL) != -1)
return codec;
// Nope. Next!
codec = codec->next;
}
// Nothin'
return NULL;
}
while(codec)
{
if(!Q_stricmp(ext, codec->ext))
return codec;
codec = codec->next;
}
return NULL;
}
/*
=================
S_CodecInit
=================
*/
void S_CodecInit()
{
codecs = NULL;
S_CodecRegister(&wav_codec);
#ifdef USE_CODEC_VORBIS
S_CodecRegister(&ogg_codec);
#endif
}
/*
=================
S_CodecShutdown
=================
*/
void S_CodecShutdown()
{
codecs = NULL;
}
/*
=================
S_CodecRegister
=================
*/
void S_CodecRegister(snd_codec_t *codec)
{
codec->next = codecs;
codecs = codec;
}
/*
=================
S_CodecLoad
=================
*/
void *S_CodecLoad(const char *filename, snd_info_t *info)
{
snd_codec_t *codec;
char fn[MAX_QPATH];
codec = S_FindCodecForFile(filename);
if(!codec)
{
Com_Printf("Unknown extension for %s\n", filename);
return NULL;
}
strncpy(fn, filename, sizeof(fn));
COM_DefaultExtension(fn, sizeof(fn), codec->ext);
return codec->load(fn, info);
}
/*
=================
S_CodecOpenStream
=================
*/
snd_stream_t *S_CodecOpenStream(const char *filename)
{
snd_codec_t *codec;
char fn[MAX_QPATH];
codec = S_FindCodecForFile(filename);
if(!codec)
{
Com_Printf("Unknown extension for %s\n", filename);
return NULL;
}
strncpy(fn, filename, sizeof(fn));
COM_DefaultExtension(fn, sizeof(fn), codec->ext);
return codec->open(fn);
}
void S_CodecCloseStream(snd_stream_t *stream)
{
stream->codec->close(stream);
}
int S_CodecReadStream(snd_stream_t *stream, int bytes, void *buffer)
{
return stream->codec->read(stream, bytes, buffer);
}
//=======================================================================
// Util functions (used by codecs)
/*
=================
S_CodecUtilOpen
=================
*/
snd_stream_t *S_CodecUtilOpen(const char *filename, snd_codec_t *codec)
{
snd_stream_t *stream;
fileHandle_t hnd;
int length;
// Try to open the file
length = FS_FOpenFileRead(filename, &hnd, qtrue);
if(!hnd)
{
Com_Printf("Can't read sound file %s\n", filename);
return NULL;
}
// Allocate a stream
stream = Z_Malloc(sizeof(snd_stream_t));
if(!stream)
{
FS_FCloseFile(hnd);
return NULL;
}
// Copy over, return
stream->codec = codec;
stream->file = hnd;
stream->length = length;
return stream;
}
/*
=================
S_CodecUtilClose
=================
*/
void S_CodecUtilClose(snd_stream_t **stream)
{
FS_FCloseFile((*stream)->file);
Z_Free(*stream);
*stream = NULL;
}
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