mirror of
https://github.com/UberGames/lilium-voyager.git
synced 2024-12-15 22:51:13 +00:00
2d45e57068
Use FS_SEEK_END in sound code instead of working around it. If FS_SEEK_SET and going to current position, just return.
475 lines
9.4 KiB
C
475 lines
9.4 KiB
C
/*
|
|
===========================================================================
|
|
Copyright (C) 1999-2005 Id Software, Inc.
|
|
Copyright (C) 2005 Stuart Dalton (badcdev@gmail.com)
|
|
Copyright (C) 2005-2006 Joerg Dietrich <dietrich_joerg@gmx.de>
|
|
|
|
This file is part of Quake III Arena source code.
|
|
|
|
Quake III Arena source code 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.
|
|
|
|
Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
===========================================================================
|
|
*/
|
|
|
|
// OGG support is enabled by this define
|
|
#ifdef USE_CODEC_VORBIS
|
|
|
|
// includes for the Q3 sound system
|
|
#include "client.h"
|
|
#include "snd_codec.h"
|
|
|
|
// includes for the OGG codec
|
|
#include <errno.h>
|
|
#define OV_EXCLUDE_STATIC_CALLBACKS
|
|
#include <vorbis/vorbisfile.h>
|
|
|
|
// The OGG codec can return the samples in a number of different formats,
|
|
// we use the standard signed short format.
|
|
#define OGG_SAMPLEWIDTH 2
|
|
|
|
// Q3 OGG codec
|
|
snd_codec_t ogg_codec =
|
|
{
|
|
"ogg",
|
|
S_OGG_CodecLoad,
|
|
S_OGG_CodecOpenStream,
|
|
S_OGG_CodecReadStream,
|
|
S_OGG_CodecCloseStream,
|
|
NULL
|
|
};
|
|
|
|
// callbacks for vobisfile
|
|
|
|
// fread() replacement
|
|
size_t S_OGG_Callback_read(void *ptr, size_t size, size_t nmemb, void *datasource)
|
|
{
|
|
snd_stream_t *stream;
|
|
int byteSize = 0;
|
|
int bytesRead = 0;
|
|
size_t nMembRead = 0;
|
|
|
|
// check if input is valid
|
|
if(!ptr)
|
|
{
|
|
errno = EFAULT;
|
|
return 0;
|
|
}
|
|
|
|
if(!(size && nmemb))
|
|
{
|
|
// It's not an error, caller just wants zero bytes!
|
|
errno = 0;
|
|
return 0;
|
|
}
|
|
|
|
if(!datasource)
|
|
{
|
|
errno = EBADF;
|
|
return 0;
|
|
}
|
|
|
|
// we use a snd_stream_t in the generic pointer to pass around
|
|
stream = (snd_stream_t *) datasource;
|
|
|
|
// FS_Read does not support multi-byte elements
|
|
byteSize = nmemb * size;
|
|
|
|
// read it with the Q3 function FS_Read()
|
|
bytesRead = FS_Read(ptr, byteSize, stream->file);
|
|
|
|
// update the file position
|
|
stream->pos += bytesRead;
|
|
|
|
// this function returns the number of elements read not the number of bytes
|
|
nMembRead = bytesRead / size;
|
|
|
|
// even if the last member is only read partially
|
|
// it is counted as a whole in the return value
|
|
if(bytesRead % size)
|
|
{
|
|
nMembRead++;
|
|
}
|
|
|
|
return nMembRead;
|
|
}
|
|
|
|
// fseek() replacement
|
|
int S_OGG_Callback_seek(void *datasource, ogg_int64_t offset, int whence)
|
|
{
|
|
snd_stream_t *stream;
|
|
int retVal = 0;
|
|
|
|
// check if input is valid
|
|
if(!datasource)
|
|
{
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
|
|
// snd_stream_t in the generic pointer
|
|
stream = (snd_stream_t *) datasource;
|
|
|
|
// we must map the whence to its Q3 counterpart
|
|
switch(whence)
|
|
{
|
|
case SEEK_SET :
|
|
{
|
|
// set the file position in the actual file with the Q3 function
|
|
retVal = FS_Seek(stream->file, (long) offset, FS_SEEK_SET);
|
|
|
|
// something has gone wrong, so we return here
|
|
if(retVal < 0)
|
|
{
|
|
return retVal;
|
|
}
|
|
|
|
// keep track of file position
|
|
stream->pos = (int) offset;
|
|
break;
|
|
}
|
|
|
|
case SEEK_CUR :
|
|
{
|
|
// set the file position in the actual file with the Q3 function
|
|
retVal = FS_Seek(stream->file, (long) offset, FS_SEEK_CUR);
|
|
|
|
// something has gone wrong, so we return here
|
|
if(retVal < 0)
|
|
{
|
|
return retVal;
|
|
}
|
|
|
|
// keep track of file position
|
|
stream->pos += (int) offset;
|
|
break;
|
|
}
|
|
|
|
case SEEK_END :
|
|
{
|
|
// set the file position in the actual file with the Q3 function
|
|
retVal = FS_Seek(stream->file, (long) offset, FS_SEEK_END);
|
|
|
|
// something has gone wrong, so we return here
|
|
if(retVal < 0)
|
|
{
|
|
return retVal;
|
|
}
|
|
|
|
// keep track of file position
|
|
stream->pos = stream->length + (int) offset;
|
|
break;
|
|
}
|
|
|
|
default :
|
|
{
|
|
// unknown whence, so we return an error
|
|
errno = EINVAL;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
// stream->pos shouldn't be smaller than zero or bigger than the filesize
|
|
stream->pos = (stream->pos < 0) ? 0 : stream->pos;
|
|
stream->pos = (stream->pos > stream->length) ? stream->length : stream->pos;
|
|
|
|
return 0;
|
|
}
|
|
|
|
// fclose() replacement
|
|
int S_OGG_Callback_close(void *datasource)
|
|
{
|
|
// we do nothing here and close all things manually in S_OGG_CodecCloseStream()
|
|
return 0;
|
|
}
|
|
|
|
// ftell() replacement
|
|
long S_OGG_Callback_tell(void *datasource)
|
|
{
|
|
snd_stream_t *stream;
|
|
|
|
// check if input is valid
|
|
if(!datasource)
|
|
{
|
|
errno = EBADF;
|
|
return -1;
|
|
}
|
|
|
|
// snd_stream_t in the generic pointer
|
|
stream = (snd_stream_t *) datasource;
|
|
|
|
return (long) FS_FTell(stream->file);
|
|
}
|
|
|
|
// the callback structure
|
|
const ov_callbacks S_OGG_Callbacks =
|
|
{
|
|
&S_OGG_Callback_read,
|
|
&S_OGG_Callback_seek,
|
|
&S_OGG_Callback_close,
|
|
&S_OGG_Callback_tell
|
|
};
|
|
|
|
/*
|
|
=================
|
|
S_OGG_CodecOpenStream
|
|
=================
|
|
*/
|
|
snd_stream_t *S_OGG_CodecOpenStream(const char *filename)
|
|
{
|
|
snd_stream_t *stream;
|
|
|
|
// OGG codec control structure
|
|
OggVorbis_File *vf;
|
|
|
|
// some variables used to get informations about the OGG
|
|
vorbis_info *OGGInfo;
|
|
ogg_int64_t numSamples;
|
|
|
|
// check if input is valid
|
|
if(!filename)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
// Open the stream
|
|
stream = S_CodecUtilOpen(filename, &ogg_codec);
|
|
if(!stream)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
// alloctate the OggVorbis_File
|
|
vf = Z_Malloc(sizeof(OggVorbis_File));
|
|
if(!vf)
|
|
{
|
|
S_CodecUtilClose(&stream);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// open the codec with our callbacks and stream as the generic pointer
|
|
if(ov_open_callbacks(stream, vf, NULL, 0, S_OGG_Callbacks) != 0)
|
|
{
|
|
Z_Free(vf);
|
|
|
|
S_CodecUtilClose(&stream);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// the stream must be seekable
|
|
if(!ov_seekable(vf))
|
|
{
|
|
ov_clear(vf);
|
|
|
|
Z_Free(vf);
|
|
|
|
S_CodecUtilClose(&stream);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// we only support OGGs with one substream
|
|
if(ov_streams(vf) != 1)
|
|
{
|
|
ov_clear(vf);
|
|
|
|
Z_Free(vf);
|
|
|
|
S_CodecUtilClose(&stream);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// get the info about channels and rate
|
|
OGGInfo = ov_info(vf, 0);
|
|
if(!OGGInfo)
|
|
{
|
|
ov_clear(vf);
|
|
|
|
Z_Free(vf);
|
|
|
|
S_CodecUtilClose(&stream);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// get the number of sample-frames in the OGG
|
|
numSamples = ov_pcm_total(vf, 0);
|
|
|
|
// fill in the info-structure in the stream
|
|
stream->info.rate = OGGInfo->rate;
|
|
stream->info.width = OGG_SAMPLEWIDTH;
|
|
stream->info.channels = OGGInfo->channels;
|
|
stream->info.samples = numSamples;
|
|
stream->info.size = stream->info.samples * stream->info.channels * stream->info.width;
|
|
stream->info.dataofs = 0;
|
|
|
|
// We use stream->pos for the file pointer in the compressed ogg file
|
|
stream->pos = 0;
|
|
|
|
// We use the generic pointer in stream for the OGG codec control structure
|
|
stream->ptr = vf;
|
|
|
|
return stream;
|
|
}
|
|
|
|
/*
|
|
=================
|
|
S_OGG_CodecCloseStream
|
|
=================
|
|
*/
|
|
void S_OGG_CodecCloseStream(snd_stream_t *stream)
|
|
{
|
|
// check if input is valid
|
|
if(!stream)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// let the OGG codec cleanup its stuff
|
|
ov_clear((OggVorbis_File *) stream->ptr);
|
|
|
|
// free the OGG codec control struct
|
|
Z_Free(stream->ptr);
|
|
|
|
// close the stream
|
|
S_CodecUtilClose(&stream);
|
|
}
|
|
|
|
/*
|
|
=================
|
|
S_OGG_CodecReadStream
|
|
=================
|
|
*/
|
|
int S_OGG_CodecReadStream(snd_stream_t *stream, int bytes, void *buffer)
|
|
{
|
|
// buffer handling
|
|
int bytesRead, bytesLeft, c;
|
|
char *bufPtr;
|
|
|
|
// Bitstream for the decoder
|
|
int BS = 0;
|
|
|
|
// big endian machines want their samples in big endian order
|
|
int IsBigEndian = 0;
|
|
|
|
# ifdef Q3_BIG_ENDIAN
|
|
IsBigEndian = 1;
|
|
# endif // Q3_BIG_ENDIAN
|
|
|
|
// check if input is valid
|
|
if(!(stream && buffer))
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
if(bytes <= 0)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
bytesRead = 0;
|
|
bytesLeft = bytes;
|
|
bufPtr = buffer;
|
|
|
|
// cycle until we have the requested or all available bytes read
|
|
while(-1)
|
|
{
|
|
// read some bytes from the OGG codec
|
|
c = ov_read((OggVorbis_File *) stream->ptr, bufPtr, bytesLeft, IsBigEndian, OGG_SAMPLEWIDTH, 1, &BS);
|
|
|
|
// no more bytes are left
|
|
if(c <= 0)
|
|
{
|
|
break;
|
|
}
|
|
|
|
bytesRead += c;
|
|
bytesLeft -= c;
|
|
bufPtr += c;
|
|
|
|
// we have enough bytes
|
|
if(bytesLeft <= 0)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
|
|
return bytesRead;
|
|
}
|
|
|
|
/*
|
|
=====================================================================
|
|
S_OGG_CodecLoad
|
|
|
|
We handle S_OGG_CodecLoad as a special case of the streaming functions
|
|
where we read the whole stream at once.
|
|
======================================================================
|
|
*/
|
|
void *S_OGG_CodecLoad(const char *filename, snd_info_t *info)
|
|
{
|
|
snd_stream_t *stream;
|
|
byte *buffer;
|
|
int bytesRead;
|
|
|
|
// check if input is valid
|
|
if(!(filename && info))
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
// open the file as a stream
|
|
stream = S_OGG_CodecOpenStream(filename);
|
|
if(!stream)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
// copy over the info
|
|
info->rate = stream->info.rate;
|
|
info->width = stream->info.width;
|
|
info->channels = stream->info.channels;
|
|
info->samples = stream->info.samples;
|
|
info->size = stream->info.size;
|
|
info->dataofs = stream->info.dataofs;
|
|
|
|
// allocate a buffer
|
|
// this buffer must be free-ed by the caller of this function
|
|
buffer = Hunk_AllocateTempMemory(info->size);
|
|
if(!buffer)
|
|
{
|
|
S_OGG_CodecCloseStream(stream);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
// fill the buffer
|
|
bytesRead = S_OGG_CodecReadStream(stream, info->size, buffer);
|
|
|
|
// we don't even have read a single byte
|
|
if(bytesRead <= 0)
|
|
{
|
|
Hunk_FreeTempMemory(buffer);
|
|
S_OGG_CodecCloseStream(stream);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
S_OGG_CodecCloseStream(stream);
|
|
|
|
return buffer;
|
|
}
|
|
|
|
#endif // USE_CODEC_VORBIS
|