Initial import.

1 files changed, 238 insertions, 0 deletions

diff --git a/src/client/snd_codec.c b/src/client/snd_codec.c
new file mode 100644
index 0000000..b11e087
--- /dev/null
+++ b/src/client/snd_codec.c
@@ -0,0 +1,238 @@
+/*
+===========================================================================
+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;
+}