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Diffstat (limited to 'src/client/snd_codec.c')
| -rw-r--r-- | src/client/snd_codec.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/src/client/snd_codec.c b/src/client/snd_codec.c new file mode 100644 index 0000000..088236a --- /dev/null +++ b/src/client/snd_codec.c @@ -0,0 +1,234 @@ +/* +=========================================================================== +Copyright (C) 1999-2005 Id Software, Inc. +Copyright (C) 2000-2006 Tim Angus +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; + 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); +#if 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); +} |