SDL_sound_CoreAudio: decoders/oggtremor.c annotate

annotate decoders/oggtremor.c @ 590:1c8414cd5839

Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder.

author	Eric Wing <ewing@anscamobile.com>
date	Wed, 27 Apr 2011 19:37:16 -0700
parents
children	8faf61a640f0

rev	line source
590 1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	1 /*
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	2 * SDL_sound -- An abstract sound format decoding API.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	3 * Copyright (C) 2001 Ryan C. Gordon.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	4 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	7 * License as published by the Free Software Foundation; either
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	8 * version 2.1 of the License, or (at your option) any later version.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	9 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	13 * Lesser General Public License for more details.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	14 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	18 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	19
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	20 /*
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	21 * Ogg Vorbis decoder for SDL_sound.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	22 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	23 * This driver handles .OGG audio files, and depends on libvorbisfile to
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	24 * do the actual decoding work. libvorbisfile is part of libvorbis, which
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	25 * is part of the Ogg Vorbis project.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	26 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	27 * Ogg Vorbis: http://www.xiph.org/ogg/vorbis/
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	28 * vorbisfile documentation: http://www.xiph.org/ogg/vorbis/doc/vorbisfile/
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	29 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	30 * Please see the file LICENSE.txt in the source's root directory.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	31 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	32 * This file written by Ryan C. Gordon. (icculus@icculus.org)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	33 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	34
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	35 #if HAVE_CONFIG_H
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	36 # include <config.h>
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	37 #endif
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	38
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	39 #ifdef SOUND_SUPPORTS_OGG
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	40
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	41 #include <stdio.h>
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	42 #include <stdlib.h>
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	43 #include <string.h>
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	44 #include <math.h>
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	45
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	46 #include "SDL_sound.h"
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	47
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	48 #define __SDL_SOUND_INTERNAL__
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	49 #include "SDL_sound_internal.h"
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	50
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	51 //#include <vorbis/codec.h>
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	52 #include <ivorbisfile.h>
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	53 #define ERR_IO_ERROR "I/O error"
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	54
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	55
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	56 static int OGG_init(void);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	57 static void OGG_quit(void);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	58 static int OGG_open(Sound_Sample sample, const char ext);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	59 static void OGG_close(Sound_Sample *sample);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	60 static Uint32 OGG_read(Sound_Sample *sample);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	61 static int OGG_rewind(Sound_Sample *sample);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	62 static int OGG_seek(Sound_Sample *sample, Uint32 ms);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	63
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	64 static const char *extensions_ogg[] = { "OGG", NULL };
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	65 const Sound_DecoderFunctions __Sound_DecoderFunctions_OGG =
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	66 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	67 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	68 extensions_ogg,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	69 "Ogg Vorbis audio through VorbisFile",
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	70 "Ryan C. Gordon <icculus@icculus.org>",
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	71 "http://www.icculus.org/SDL_sound/"
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	72 },
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	73
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	74 OGG_init, /* init() method */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	75 OGG_quit, /* quit() method */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	76 OGG_open, /* open() method */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	77 OGG_close, /* close() method */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	78 OGG_read, /* read() method */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	79 OGG_rewind, /* rewind() method */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	80 OGG_seek /* seek() method */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	81 };
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	82
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	83
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	84 static int OGG_init(void)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	85 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	86 return(1); /* always succeeds. */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	87 } /* OGG_init */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	88
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	89
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	90 static void OGG_quit(void)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	91 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	92 /* it's a no-op. */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	93 } /* OGG_quit */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	94
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	95
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	96
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	97 /*
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	98 * These are callbacks from vorbisfile that let them read data from
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	99 * a RWops...
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	100 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	101
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	102 static size_t RWops_ogg_read(void ptr, size_t size, size_t nmemb, void datasource)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	103 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	104 return((size_t) SDL_RWread((SDL_RWops *) datasource, ptr, size, nmemb));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	105 } /* RWops_ogg_read */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	106
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	107 static int RWops_ogg_seek(void *datasource, ogg_int64_t offset, int whence)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	108 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	109 return(SDL_RWseek((SDL_RWops *) datasource, offset, whence));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	110 } /* RWops_ogg_seek */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	111
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	112 static int RWops_ogg_close(void *datasource)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	113 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	114 /* do nothing; SDL_sound will delete the RWops at a higher level. */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	115 return(0); /* this is success in fclose(), so I guess that's okay. */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	116 } /* RWops_ogg_close */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	117
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	118 static long RWops_ogg_tell(void *datasource)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	119 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	120 return((long) SDL_RWtell((SDL_RWops *) datasource));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	121 } /* RWops_ogg_tell */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	122
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	123 static const ov_callbacks RWops_ogg_callbacks =
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	124 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	125 RWops_ogg_read,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	126 RWops_ogg_seek,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	127 RWops_ogg_close,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	128 RWops_ogg_tell
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	129 };
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	130
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	131
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	132 /* Return a human readable version of an VorbisFile error code... */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	133 #if (defined DEBUG_CHATTER)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	134 static const char *ogg_error(int errnum)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	135 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	136 switch(errnum)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	137 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	138 case OV_EREAD:
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	139 return("i/o error");
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	140 case OV_ENOTVORBIS:
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	141 return("not a vorbis file");
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	142 case OV_EVERSION:
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	143 return("Vorbis version mismatch");
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	144 case OV_EBADHEADER:
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	145 return("invalid Vorbis bitstream header");
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	146 case OV_EFAULT:
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	147 return("internal logic fault in Vorbis library");
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	148 } /* switch */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	149
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	150 return("unknown error");
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	151 } /* ogg_error */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	152 #endif
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	153
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	154 static __inline__ void output_ogg_comments(OggVorbis_File *vf)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	155 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	156 #if (defined DEBUG_CHATTER)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	157 int i;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	158 vorbis_comment *vc = ov_comment(vf, -1);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	159
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	160 if (vc == NULL)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	161 return;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	162
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	163 SNDDBG(("OGG: vendor == [%s].\n", vc->vendor));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	164 for (i = 0; i < vc->comments; i++)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	165 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	166 SNDDBG(("OGG: user comment [%s].\n", vc->user_comments[i]));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	167 } /* for */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	168 #endif
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	169 } /* output_ogg_comments */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	170
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	171
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	172 static int OGG_open(Sound_Sample sample, const char ext)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	173 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	174 int rc;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	175 double total_time;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	176 OggVorbis_File *vf;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	177 vorbis_info *info;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	178 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	179
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	180 vf = (OggVorbis_File *) malloc(sizeof (OggVorbis_File));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	181 BAIL_IF_MACRO(vf == NULL, ERR_OUT_OF_MEMORY, 0);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	182
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	183 rc = ov_open_callbacks(internal->rw, vf, NULL, 0, RWops_ogg_callbacks);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	184 if (rc != 0)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	185 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	186 SNDDBG(("OGG: can't grok data. reason: [%s].\n", ogg_error(rc)));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	187 free(vf);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	188 BAIL_MACRO("OGG: Not valid Ogg Vorbis data.", 0);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	189 } /* if */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	190
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	191 info = ov_info(vf, -1);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	192 if (info == NULL)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	193 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	194 ov_clear(vf);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	195 free(vf);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	196 BAIL_MACRO("OGG: failed to retrieve bitstream info", 0);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	197 } /* if */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	198
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	199 SNDDBG(("OGG: Accepting data stream.\n"));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	200
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	201 output_ogg_comments(vf);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	202 SNDDBG(("OGG: bitstream version == (%d).\n", info->version));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	203 SNDDBG(("OGG: bitstream channels == (%d).\n", info->channels));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	204 SNDDBG(("OGG: bitstream sampling rate == (%ld).\n", info->rate));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	205 SNDDBG(("OGG: seekable == {%s}.\n", ov_seekable(vf) ? "TRUE" : "FALSE"));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	206 SNDDBG(("OGG: number of logical bitstreams == (%ld).\n", ov_streams(vf)));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	207 SNDDBG(("OGG: serial number == (%ld).\n", ov_serialnumber(vf, -1)));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	208 SNDDBG(("OGG: total seconds of sample == (%f).\n", ov_time_total(vf, -1)));
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	209
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	210 internal->decoder_private = vf;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	211 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	212 sample->actual.rate = (Uint32) info->rate;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	213 sample->actual.channels = (Uint8) info->channels;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	214 total_time = ov_time_total(vf, -1);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	215 if (OV_EINVAL == total_time)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	216 internal->total_time = -1;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	217 else
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	218 internal->total_time = (Sint32)(total_time * 1000.0 + 0.5);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	219
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	220
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	221 /*
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	222 * Since we might have more than one logical bitstream in the OGG file,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	223 * and these bitstreams may be in different formats, we might be
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	224 * converting two or three times: once in vorbisfile, once again in
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	225 * SDL_sound, and perhaps a third time to get it to the sound device's
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	226 * format. That's wickedly inefficient.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	227 *
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	228 * To combat this a little, if the user specified a desired format, we
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	229 * claim that to be the "actual" format of the collection of logical
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	230 * bitstreams. This means that VorbisFile will do a conversion as
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	231 * necessary, and SDL_sound will not. If the user didn't specify a
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	232 * desired format, then we pretend the "actual" format is something that
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	233 * OGG files are apparently commonly encoded in.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	234 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	235 sample->actual.format = (sample->desired.format == 0) ?
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	236 AUDIO_S16SYS : sample->desired.format;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	237 return(1);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	238 } /* OGG_open */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	239
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	240
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	241 static void OGG_close(Sound_Sample *sample)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	242 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	243 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	244 OggVorbis_File vf = (OggVorbis_File ) internal->decoder_private;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	245 ov_clear(vf);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	246 free(vf);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	247 } /* OGG_close */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	248
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	249 /* Note: According to the Vorbis documentation:
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	250 * "ov_read() will decode at most one vorbis packet per invocation,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	251 * so the value returned will generally be less than length."
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	252 * Due to this, for buffer sizes like 16384, SDL_Sound was always getting
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	253 * an underfilled buffer and always setting the EAGAIN flag.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	254 * Since the SDL_Sound API implies that the entire buffer
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	255 * should be filled unless EOF, additional code has been added
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	256 * to this function to call ov_read() until the buffer is filled.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	257 * However, there may still be some corner cases where the buffer
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	258 * cannot be entirely filled. So be aware.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	259 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	260 static Uint32 OGG_read(Sound_Sample *sample)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	261 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	262 int rc;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	263 int bitstream;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	264 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	265 OggVorbis_File vf = (OggVorbis_File ) internal->decoder_private;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	266
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	267 rc = ov_read(vf, internal->buffer, internal->buffer_size,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	268 &bitstream);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	269
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	270 /* Make sure the read went smoothly... */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	271 if (rc == 0)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	272 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	273
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	274 else if (rc < 0)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	275 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	276
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	277 /* If the buffer isn't filled, keep trying to fill it
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	278 * until no more data can be grabbed */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	279 else if ((Uint32) rc < internal->buffer_size)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	280 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	281 /* Creating a pointer to the buffer that denotes where to start
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	282 * writing new data. */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	283 Uint8* buffer_start_point = NULL;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	284 int total_bytes_read = rc;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	285 int bytes_remaining = internal->buffer_size - rc;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	286
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	287 /* Keep grabbing data until something prevents
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	288 * us from getting more. (Could be EOF,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	289 * packets are too large to fit in remaining
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	290 * space, or an error.)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	291 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	292 while( (rc > 0) && (bytes_remaining > 0) )
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	293 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	294 /* Set buffer pointer to end of last write */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	295 /* All the messiness is to get rid of the warning for
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	296 * dereferencing a void*
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	297 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	298 buffer_start_point = &(((Uint8*)internal->buffer)[total_bytes_read]);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	299 rc = ov_read(vf, buffer_start_point, bytes_remaining,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	300 &bitstream);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	301 /* Make sure rc > 0 because we don't accidently want
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	302 * to change the counters if there was an error
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	303 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	304 if(rc > 0)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	305 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	306 total_bytes_read += rc;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	307 bytes_remaining = bytes_remaining - rc;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	308 }
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	309 }
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	310 /* I think the minimum read size is 2, though I'm
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	311 * not sure about this. (I've hit cases where I
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	312 * couldn't read less than 4.) What I don't want to do is
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	313 * accidently claim we hit EOF when the reason rc == 0
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	314 * is because the requested amount of data was smaller
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	315 * than the minimum packet size.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	316 * For now, I will be conservative
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	317 * and not set the EOF flag, and let the next call to
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	318 * this function figure it out.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	319 * I think the ERROR flag is safe to set because
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	320 * it looks like OGG simply returns 0 if the
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	321 * read size is too small.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	322 * And in most cases for sensible buffer sizes,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	323 * this fix will fill the buffer,
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	324 * so we can set the EAGAIN flag without worrying
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	325 * that it will always be set.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	326 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	327 if(rc < 0)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	328 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	329 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	330 }
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	331 else if(rc == 0)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	332 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	333 /* Do nothing for now until there is a better solution */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	334 /* sample->flags \|= SOUND_SAMPLEFLAG_EOF; */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	335 }
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	336
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	337 /* Test for a buffer underrun. It should occur less frequently
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	338 * now, but it still may happen and not necessarily mean
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	339 * anything useful. */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	340 if ((Uint32) total_bytes_read < internal->buffer_size)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	341 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	342 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	343 }
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	344 /* change rc to the total bytes read so function
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	345 * can return the correct value.
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	346 */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	347 rc = total_bytes_read;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	348 }
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	349
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	350 return((Uint32) rc);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	351 } /* OGG_read */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	352
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	353
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	354 static int OGG_rewind(Sound_Sample *sample)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	355 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	356 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	357 OggVorbis_File vf = (OggVorbis_File ) internal->decoder_private;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	358
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	359 BAIL_IF_MACRO(ov_raw_seek(vf, 0) < 0, ERR_IO_ERROR, 0);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	360 return(1);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	361 } /* OGG_rewind */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	362
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	363
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	364 static int OGG_seek(Sound_Sample *sample, Uint32 ms)
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	365 {
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	366 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	367 OggVorbis_File vf = (OggVorbis_File ) internal->decoder_private;
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	368 double timepos = (((double) ms) / 1000.0);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	369 BAIL_IF_MACRO(ov_time_seek(vf, timepos) < 0, ERR_IO_ERROR, 0);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	370 return(1);
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	371 } /* OGG_seek */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	372
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	373 #endif /* SOUND_SUPPORTS_OGG */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	374
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	375
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	376 /* end of ogg.c ... */
1c8414cd5839 Introduced new Ogg Tremor decoder, based on the existing Ogg Vorbis decoder. Eric Wing <ewing@anscamobile.com> parents: diff changeset	377

Mercurial > SDL_sound_CoreAudio

annotate decoders/oggtremor.c @ 590:1c8414cd5839