SDL_sound_CoreAudio: decoders/coreaudio.c annotate

annotate decoders/coreaudio.c @ 576:8d62447b75f2

Added new Core Audio backend.

author	Eric Wing <ewing . public \|-at-\| gmail . com>
date	Sun, 10 Oct 2010 21:30:17 -0700
parents
children	af33b35a55c1

rev	line source
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	1 /*
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	2 * SDL_sound Core Audio backend
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	3 * Copyright (C) 2010 Eric Wing
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	4 *
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	5 * This library is free software; you can redistribute it and/or
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	6 * modify it under the terms of the GNU Lesser General Public
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	7 * License as published by the Free Software Foundation; either
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	8 * version 2.1 of the License, or (at your option) any later version.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	9 *
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	10 * This library is distributed in the hope that it will be useful,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	13 * Lesser General Public License for more details.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	14 *
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	15 * You should have received a copy of the GNU Lesser General Public
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	16 * License along with this library; if not, write to the Free Software
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	18 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	19
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	20 #if HAVE_CONFIG_H
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	21 # include <config.h>
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	22 #endif
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	23
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	24 #ifdef SOUND_SUPPORTS_COREAUDIO
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	25
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	26 #include <stddef.h> /* NULL */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	27 #include <stdio.h> /* printf */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	28 #include <arpa/inet.h> /* htonl */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	29 #include <AudioToolbox/AudioToolbox.h>
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	30
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	31 #include "SDL_sound.h"
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	32
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	33 #define __SDL_SOUND_INTERNAL__
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	34 #include "SDL_sound_internal.h"
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	35
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	36 typedef struct CoreAudioFileContainer
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	37 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	38 AudioFileID* audioFileID;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	39 ExtAudioFileRef extAudioFileRef;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	40 AudioStreamBasicDescription* outputFormat;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	41 } CoreAudioFileContainer;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	42
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	43 //http://developer.apple.com/library/ios/#documentation/MusicAudio/Reference/AudioFileConvertRef/Reference/reference.html
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	44
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	45 static int CoreAudio_init(void);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	46 static void CoreAudio_quit(void);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	47 static int CoreAudio_open(Sound_Sample sample, const char ext);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	48 static void CoreAudio_close(Sound_Sample *sample);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	49 static Uint32 CoreAudio_read(Sound_Sample *sample);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	50 static int CoreAudio_rewind(Sound_Sample *sample);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	51 static int CoreAudio_seek(Sound_Sample *sample, Uint32 ms);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	52
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	53 static const char *extensions_coreaudio[] =
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	54 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	55 "aif",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	56 "aiff",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	57 "aifc",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	58 "wav",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	59 "wave",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	60 "mp3",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	61 "mp4",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	62 "m4a",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	63 "aac",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	64 "caf",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	65 "Sd2f",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	66 "au",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	67 "next",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	68 "mp2",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	69 "mp1",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	70 "ac3",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	71 "3gpp",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	72 "3gp2",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	73 "amrf",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	74 NULL
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	75 };
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	76 const Sound_DecoderFunctions __Sound_DecoderFunctions_CoreAudio =
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	77 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	78 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	79 extensions_coreaudio,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	80 "Decode audio through Core Audio through",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	81 "Eric Wing <ewing.public@playcontrol.net>",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	82 "http://playcontrol.net"
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	83 },
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	84
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	85 CoreAudio_init, /* init() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	86 CoreAudio_quit, /* quit() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	87 CoreAudio_open, /* open() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	88 CoreAudio_close, /* close() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	89 CoreAudio_read, /* read() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	90 CoreAudio_rewind, /* rewind() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	91 CoreAudio_seek /* seek() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	92 };
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	93
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	94
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	95 static int CoreAudio_init(void)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	96 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	97 return(1); /* always succeeds. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	98 } /* CoreAudio_init */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	99
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	100
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	101 static void CoreAudio_quit(void)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	102 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	103 /* it's a no-op. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	104 } /* CoreAudio_quit */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	105
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	106
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	107 static AudioFileTypeID CoreAudio_GetAudioTypeForExtension(const char* file_extension)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	108 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	109 if( (__Sound_strcasecmp(file_extension, "aif") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	110 \|\| (__Sound_strcasecmp(file_extension, "aiff") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	111 \|\| (__Sound_strcasecmp(file_extension, "aifc") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	112 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	113 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	114 return kAudioFileAIFCType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	115 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	116 else if( (__Sound_strcasecmp(file_extension, "wav") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	117 \|\| (__Sound_strcasecmp(file_extension, "wave") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	118 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	119 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	120 return kAudioFileWAVEType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	121 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	122 else if( (__Sound_strcasecmp(file_extension, "mp3") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	123 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	124 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	125 return kAudioFileMP3Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	126 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	127 else if( (__Sound_strcasecmp(file_extension, "mp4") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	128 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	129 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	130 return kAudioFileMPEG4Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	131 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	132 else if( (__Sound_strcasecmp(file_extension, "m4a") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	133 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	134 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	135 return kAudioFileM4AType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	136 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	137 else if( (__Sound_strcasecmp(file_extension, "aac") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	138 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	139 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	140 return kAudioFileAAC_ADTSType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	141 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	142 else if( (__Sound_strcasecmp(file_extension, "aac") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	143 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	144 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	145 return kAudioFileAAC_ADTSType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	146 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	147 else if( (__Sound_strcasecmp(file_extension, "caf") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	148 \|\| (__Sound_strcasecmp(file_extension, "caff") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	149 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	150 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	151 return kAudioFileCAFType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	152 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	153 else if( (__Sound_strcasecmp(file_extension, "Sd2f") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	154 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	155 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	156 return kAudioFileSoundDesigner2Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	157 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	158 else if( (__Sound_strcasecmp(file_extension, "au") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	159 \|\| (__Sound_strcasecmp(file_extension, "next") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	160 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	161 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	162 return kAudioFileNextType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	163 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	164 else if( (__Sound_strcasecmp(file_extension, "mp2") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	165 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	166 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	167 return kAudioFileMP2Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	168 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	169 else if( (__Sound_strcasecmp(file_extension, "mp1") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	170 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	171 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	172 return kAudioFileMP1Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	173 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	174 else if( (__Sound_strcasecmp(file_extension, "ac3") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	175 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	176 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	177 return kAudioFileAC3Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	178 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	179 else if( (__Sound_strcasecmp(file_extension, "3gpp") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	180 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	181 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	182 return kAudioFile3GPType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	183 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	184 else if( (__Sound_strcasecmp(file_extension, "3gp2") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	185 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	186 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	187 return kAudioFile3GP2Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	188 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	189 else if( (__Sound_strcasecmp(file_extension, "amrf") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	190 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	191 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	192 return kAudioFileAMRType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	193 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	194 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	195 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	196 return 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	197 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	198 /*
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	199 kAudioFilhttp://developer.apple.com/library/ios/#documentation/MusicAudio/Reference/AudioFileConvertRef/Reference/reference.htmleAIFFType = 'AIFF',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	200 kAudioFileAIFCType = 'AIFC',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	201 kAudioFileWAVEType = 'WAVE',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	202 kAudioFileSoundDesigner2Type = 'Sd2f',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	203 kAudioFileNextType = 'NeXT',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	204 kAudioFileMP3Type = 'MPG3',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	205 kAudioFileMP2Type = 'MPG2',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	206 kAudioFileMP1Type = 'MPG1',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	207 kAudioFileAC3Type = 'ac-3',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	208 kAudioFileAAC_ADTSType = 'adts',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	209 kAudioFileMPEG4Type = 'mp4f',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	210 kAudioFileM4AType = 'm4af',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	211 kAudioFileCAFType = 'caff',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	212 kAudioFile3GPType = '3gpp',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	213 kAudioFile3GP2Type = '3gp2',
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	214 kAudioFileAMRType = 'amrf'
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	215
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	216 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	217 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	218
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	219 static const char* CoreAudio_FourCCToString(int32_t error_code)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	220 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	221 static char return_string[16];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	222 uint32_t big_endian_code = htonl(error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	223 char* big_endian_str = (char*)&big_endian_code;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	224 // see if it appears to be a 4-char-code
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	225 if(isprint(big_endian_str[0])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	226 && isprint(big_endian_str[1])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	227 && isprint(big_endian_str[2])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	228 && isprint (big_endian_str[3]))
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	229 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	230 return_string[0] = '\'';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	231 return_string[1] = big_endian_str[0];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	232 return_string[2] = big_endian_str[1];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	233 return_string[3] = big_endian_str[2];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	234 return_string[4] = big_endian_str[3];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	235 return_string[5] = '\'';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	236 return_string[6] = '\0';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	237 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	238 else if(error_code > -200000 && error_code < 200000)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	239 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	240 // no, format it as an integer
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	241 snprintf(return_string, 16, "%d", error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	242 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	243 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	244 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	245 // no, format it as an integer but in hex
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	246 snprintf(return_string, 16, "0x%x", error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	247 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	248 return return_string;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	249 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	250
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	251
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	252
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	253 SInt64 CoreAudio_SizeCallback(void* inClientData)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	254 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	255 SDL_RWops* rw_ops = (SDL_RWops*)inClientData;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	256 SInt64 current_position = SDL_RWtell(rw_ops);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	257 SInt64 end_position = SDL_RWseek(rw_ops, 0, SEEK_END);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	258 SDL_RWseek(rw_ops, current_position, SEEK_SET);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	259 // fprintf(stderr, "CoreAudio_SizeCallback:%d\n", end_position);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	260
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	261 return end_position;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	262 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	263
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	264 OSStatus CoreAudio_ReadCallback(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	265 void* inClientData,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	266 SInt64 inPosition,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	267 UInt32 requestCount,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	268 void* data_buffer,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	269 UInt32* actualCount
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	270 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	271 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	272 SDL_RWops* rw_ops = (SDL_RWops*)inClientData;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	273 SDL_RWseek(rw_ops, inPosition, SEEK_SET);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	274 size_t bytes_actually_read = SDL_RWread(rw_ops, data_buffer, 1, requestCount);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	275 // Not sure how to test for a read error with SDL_RWops
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	276 // fprintf(stderr, "CoreAudio_ReadCallback:%d, %d\n", requestCount, bytes_actually_read);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	277
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	278 *actualCount = bytes_actually_read;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	279 return noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	280 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	281
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	282
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	283 static int CoreAudio_open(Sound_Sample sample, const char ext)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	284 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	285 CoreAudioFileContainer* core_audio_file_container;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	286 AudioFileID* audio_file_id;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	287 OSStatus error_result;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	288 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	289 AudioStreamBasicDescription actual_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	290 AudioStreamBasicDescription output_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	291 Float64 estimated_duration;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	292 UInt32 format_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	293
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	294
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	295 core_audio_file_container = (CoreAudioFileContainer*)malloc(sizeof(CoreAudioFileContainer));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	296 BAIL_IF_MACRO(core_audio_file_container == NULL, ERR_OUT_OF_MEMORY, 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	297
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	298
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	299 audio_file_id = (AudioFileID*)malloc(sizeof(AudioFileID));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	300 BAIL_IF_MACRO(audio_file_id == NULL, ERR_OUT_OF_MEMORY, 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	301
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	302 error_result = AudioFileOpenWithCallbacks(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	303 internal->rw,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	304 CoreAudio_ReadCallback,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	305 NULL,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	306 CoreAudio_SizeCallback,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	307 NULL,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	308 CoreAudio_GetAudioTypeForExtension(ext),
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	309 audio_file_id
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	310 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	311 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	312 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	313 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	314 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	315 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	316 SNDDBG(("Core Audio: can't grok data. reason: [%s].\n", CoreAudio_FourCCToString(error_result)));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	317 BAIL_MACRO("Core Audio: Not valid audio data.", 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	318 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	319
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	320 format_size = sizeof(actual_format);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	321 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	322 *audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	323 kAudioFilePropertyDataFormat,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	324 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	325 &actual_format
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	326 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	327 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	328 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	329 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	330 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	331 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	332 SNDDBG(("Core Audio: AudioFileGetProperty failed. reason: [%s].\n", CoreAudio_FourCCToString(error_result)));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	333 BAIL_MACRO("Core Audio: Not valid audio data.", 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	334 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	335
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	336 format_size = sizeof(estimated_duration);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	337 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	338 *audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	339 kAudioFilePropertyEstimatedDuration,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	340 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	341 &estimated_duration
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	342 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	343 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	344 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	345 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	346 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	347 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	348 SNDDBG(("Core Audio: AudioFileGetProperty failed. reason: [%s].\n", CoreAudio_FourCCToString(error_result)));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	349 BAIL_MACRO("Core Audio: Not valid audio data.", 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	350 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	351
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	352
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	353 core_audio_file_container->audioFileID = audio_file_id;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	354
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	355 internal->decoder_private = core_audio_file_container;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	356
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	357 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	358 sample->actual.rate = (Uint32) actual_format.mSampleRate;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	359 sample->actual.channels = (Uint8)actual_format.mChannelsPerFrame;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	360 internal->total_time = (Sint32)(estimated_duration * 1000.0 + 0.5);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	361
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	362 #if 0
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	363 /* FIXME: Both Core Audio and SDL 1.3 support float and 32-bit formats */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	364 if(actual_format.mFormatFlags & kAudioFormatFlagIsBigEndian)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	365 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	366 if(16 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	367 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	368 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	369 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	370 sample->actual.format = AUDIO_S16MSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	371 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	372 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	373 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	374 sample->actual.format = AUDIO_U16MSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	375 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	376 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	377 else if(8 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	378 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	379 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	380 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	381 sample->actual.format = AUDIO_S8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	382 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	383 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	384 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	385 sample->actual.format = AUDIO_U8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	386 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	387 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	388 else // might be 0 for undefined?
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	389 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	390 // This case seems to come up a lot for me. Maybe for file types like .m4a?
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	391 sample->actual.format = AUDIO_S16SYS;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	392 SNDDBG(("Core Audio: Unsupported actual_format.mBitsPerChannel: [%d].\n", actual_format.mBitsPerChannel));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	393
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	394 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	395 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	396 else // little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	397 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	398 if(16 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	399 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	400 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	401 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	402 sample->actual.format = AUDIO_S16LSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	403 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	404 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	405 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	406 sample->actual.format = AUDIO_U16LSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	407 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	408 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	409 else if(8 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	410 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	411 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	412 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	413 sample->actual.format = AUDIO_S8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	414 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	415 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	416 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	417 sample->actual.format = AUDIO_U8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	418 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	419 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	420 else // might be 0 for undefined?
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	421 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	422 sample->actual.format = AUDIO_S16SYS;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	423
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	424 SNDDBG(("Core Audio: Unsupported actual_format.mBitsPerChannel: [%d].\n", actual_format.mBitsPerChannel));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	425 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	426
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	427 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	428 #else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	429
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	430
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	431
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	432 /*
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	433 * I want to use Core Audio to do conversion and decoding for performance reasons.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	434 * This is particularly important on mobile devices like iOS.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	435 * Taking from the Ogg Vorbis decode, I pretend the "actual" format is the same
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	436 * as the desired format.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	437 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	438 sample->actual.format = (sample->desired.format == 0) ?
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	439 AUDIO_S16SYS : sample->desired.format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	440 #endif
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	441
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	442
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	443 SNDDBG(("CoreAudio: channels == (%d).\n", sample->actual.channels));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	444 SNDDBG(("CoreAudio: sampling rate == (%d).\n",sample->actual.rate));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	445 SNDDBG(("CoreAudio: total seconds of sample == (%d).\n", internal->total_time));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	446 SNDDBG(("CoreAudio: sample->actual.format == (%d).\n", sample->actual.format));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	447
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	448
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	449
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	450 error_result = ExtAudioFileWrapAudioFileID(*audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	451 false, // set to false for read-only
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	452 &core_audio_file_container->extAudioFileRef
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	453 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	454 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	455 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	456 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	457 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	458 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	459 SNDDBG(("Core Audio: can't wrap data. reason: [%s].\n", CoreAudio_FourCCToString(error_result)));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	460 BAIL_MACRO("Core Audio: Failed to wrap data.", 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	461 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	462
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	463
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	464 /* The output format must be linear PCM because that's the only type OpenAL knows how to deal with.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	465 * Set the client format to 16 bit signed integer (native-endian) data because that is the most
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	466 * optimal format on iPhone/iPod Touch hardware.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	467 * Maintain the channel count and sample rate of the original source format.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	468 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	469 output_format.mSampleRate = actual_format.mSampleRate; // preserve the original sample rate
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	470 output_format.mChannelsPerFrame = actual_format.mChannelsPerFrame; // preserve the number of channels
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	471 output_format.mFormatID = kAudioFormatLinearPCM; // We want linear PCM data
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	472 output_format.mFramesPerPacket = 1; // We know for linear PCM, the definition is 1 frame per packet
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	473
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	474 if(sample->desired.format == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	475 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	476 // do AUDIO_S16SYS
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	477 output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsSignedInteger \| kAudioFormatFlagIsPacked;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	478 output_format.mBitsPerChannel = 16; // We know we want 16-bit
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	479 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	480 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	481 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	482 output_format.mFormatFlags = 0; // clear flags
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	483 output_format.mFormatFlags \|= kAudioFormatFlagIsPacked; // I seem to read failures problems without this
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	484 // Mask against bitsize
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	485 if(0xFF & sample->desired.format)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	486 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	487 output_format.mBitsPerChannel = 16; /* 16-bit */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	488 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	489 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	490 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	491 output_format.mBitsPerChannel = 8; /* 8-bit */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	492 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	493
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	494 // Mask for signed/unsigned
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	495 if((1<<15) & sample->desired.format)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	496 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	497 output_format.mFormatFlags = output_format.mFormatFlags \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	498
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	499 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	500 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	501 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	502 // no flag set for unsigned
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	503 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	504 // Mask for big/little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	505 if((1<<12) & sample->desired.format)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	506 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	507 output_format.mFormatFlags = output_format.mFormatFlags \| kAudioFormatFlagIsBigEndian;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	508 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	509 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	510 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	511 // no flag set for little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	512 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	513 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	514
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	515 output_format.mBitsPerChannel = 16; // We know we want 16-bit
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	516 output_format.mBytesPerPacket = output_format.mBitsPerChannel/8 * output_format.mChannelsPerFrame; // e.g. 16-bits/8 * channels => so 2-bytes per channel per frame
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	517 output_format.mBytesPerFrame = output_format.mBitsPerChannel/8 * output_format.mChannelsPerFrame; // For PCM, since 1 frame is 1 packet, it is the same as mBytesPerPacket
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	518
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	519
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	520 /*
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	521 output_format.mSampleRate = actual_format.mSampleRate; // preserve the original sample rate
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	522 output_format.mChannelsPerFrame = actual_format.mChannelsPerFrame; // preserve the number of channels
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	523 output_format.mFormatID = kAudioFormatLinearPCM; // We want linear PCM data
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	524 // output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsPacked \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	525 output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	526 output_format.mFramesPerPacket = 1; // We know for linear PCM, the definition is 1 frame per packet
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	527 output_format.mBitsPerChannel = 16; // We know we want 16-bit
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	528 output_format.mBytesPerPacket = 2 * output_format.mChannelsPerFrame; // We know we are using 16-bit, so 2-bytes per channel per frame
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	529 output_format.mBytesPerFrame = 2 * output_format.mChannelsPerFrame; // For PCM, since 1 frame is 1 packet, it is the same as mBytesPerPacket
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	530 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	531 SNDDBG(("output_format: mSampleRate: %lf\n", output_format.mSampleRate));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	532 SNDDBG(("output_format: mChannelsPerFrame: %d\n", output_format.mChannelsPerFrame));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	533 SNDDBG(("output_format: mFormatID: %d\n", output_format.mFormatID));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	534 SNDDBG(("output_format: mFormatFlags: %d\n", output_format.mFormatFlags));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	535 SNDDBG(("output_format: mFramesPerPacket: %d\n", output_format.mFramesPerPacket));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	536 SNDDBG(("output_format: mBitsPerChannel: %d\n", output_format.mBitsPerChannel));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	537 SNDDBG(("output_format: mBytesPerPacket: %d\n", output_format.mBytesPerPacket));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	538 SNDDBG(("output_format: mBytesPerFrame: %d\n", output_format.mBytesPerFrame));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	539
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	540
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	541 /* Set the desired client (output) data format */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	542 error_result = ExtAudioFileSetProperty(core_audio_file_container->extAudioFileRef, kExtAudioFileProperty_ClientDataFormat, sizeof(output_format), &output_format);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	543 if(noErr != error_result)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	544 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	545 ExtAudioFileDispose(core_audio_file_container->extAudioFileRef);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	546 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	547 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	548 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	549 SNDDBG(("Core Audio: ExtAudioFileSetProperty(kExtAudioFileProperty_ClientDataFormat) failed, reason: [%s].\n", CoreAudio_FourCCToString(error_result)));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	550 BAIL_MACRO("Core Audio: Not valid audio data.", 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	551 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	552
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	553
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	554 core_audio_file_container->outputFormat = (AudioStreamBasicDescription*)malloc(sizeof(AudioStreamBasicDescription));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	555 BAIL_IF_MACRO(core_audio_file_container->outputFormat == NULL, ERR_OUT_OF_MEMORY, 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	556
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	557
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	558
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	559 /* Copy the output format to the audio_description that was passed in so the
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	560 * info will be returned to the user.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	561 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	562 memcpy(core_audio_file_container->outputFormat, &output_format, sizeof(AudioStreamBasicDescription));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	563
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	564
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	565
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	566 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	567 } /* CoreAudio_open */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	568
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	569
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	570 static void CoreAudio_close(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	571 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	572 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	573 CoreAudioFileContainer* core_audio_file_container = (CoreAudioFileContainer *) internal->decoder_private;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	574
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	575 ExtAudioFileDispose(core_audio_file_container->extAudioFileRef);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	576 AudioFileClose(*core_audio_file_container->audioFileID);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	577 free(core_audio_file_container->audioFileID);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	578 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	579
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	580 } /* CoreAudio_close */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	581
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	582
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	583 static Uint32 CoreAudio_read(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	584 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	585 OSStatus error_result = noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	586 SInt64 buffer_size_in_frames = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	587 SInt64 buffer_size_in_frames_remaining = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	588 SInt64 total_frames_read = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	589 Uint32 data_buffer_size = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	590 Uint32 bytes_remaining = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	591 Uint32 total_bytes_read = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	592 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	593 CoreAudioFileContainer* core_audio_file_container = (CoreAudioFileContainer *) internal->decoder_private;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	594 Uint32 max_buffer_size = internal->buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	595
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	596 // printf("internal->buffer_size=%d, internal->buffer=0x%x, sample->buffer_size=%d\n", internal->buffer_size, internal->buffer, sample->buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	597 // printf("internal->max_buffer_size=%d\n", max_buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	598
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	599 /* Compute how many frames will fit into our max buffer size */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	600 /* Warning: If this is not evenly divisible, the buffer will not be completely filled which violates the SDL_sound assumption. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	601 buffer_size_in_frames = max_buffer_size / core_audio_file_container->outputFormat->mBytesPerFrame;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	602 // printf("buffer_size_in_frames=%ld, internal->buffer_size=%d, internal->buffer=0x%x outputFormat->mBytesPerFrame=%d, sample->buffer_size=%d\n", buffer_size_in_frames, internal->buffer_size, internal->buffer, core_audio_file_container->outputFormat->mBytesPerFrame, sample->buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	603
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	604
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	605 // void* temp_buffer = malloc(max_buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	606
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	607 AudioBufferList audio_buffer_list;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	608 audio_buffer_list.mNumberBuffers = 1;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	609 audio_buffer_list.mBuffers[0].mDataByteSize = max_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	610 audio_buffer_list.mBuffers[0].mNumberChannels = core_audio_file_container->outputFormat->mChannelsPerFrame;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	611 audio_buffer_list.mBuffers[0].mData = internal->buffer;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	612
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	613
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	614 bytes_remaining = max_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	615 buffer_size_in_frames_remaining = buffer_size_in_frames;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	616
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	617 // oops. Due to a bug in how I opened the file, I was misled to believe that Core Audio
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	618 // was not always filling my entire requested buffer. So this while-loop might be unnecessary.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	619 // However, I have not exhaustively tested all formats, so maybe it is possible this loop is useful.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	620 while(buffer_size_in_frames_remaining > 0 && !(sample->flags & SOUND_SAMPLEFLAG_EOF))
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	621 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	622
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	623 data_buffer_size = (Uint32)(buffer_size_in_frames * core_audio_file_container->outputFormat->mBytesPerFrame);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	624 // printf("data_buffer_size=%d\n", data_buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	625
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	626 buffer_size_in_frames = buffer_size_in_frames_remaining;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	627
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	628 // printf("reading buffer_size_in_frames=%"PRId64"\n", buffer_size_in_frames);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	629
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	630
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	631 audio_buffer_list.mBuffers[0].mDataByteSize = bytes_remaining;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	632 audio_buffer_list.mBuffers[0].mData = &(((Uint8*)internal->buffer)[total_bytes_read]);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	633
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	634
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	635 /* Read the data into an AudioBufferList */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	636 error_result = ExtAudioFileRead(core_audio_file_container->extAudioFileRef, (UInt32*)&buffer_size_in_frames, &audio_buffer_list);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	637 if(error_result == noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	638 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	639
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	640
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	641 /* Success */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	642
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	643 total_frames_read += buffer_size_in_frames;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	644 buffer_size_in_frames_remaining = buffer_size_in_frames_remaining - buffer_size_in_frames;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	645
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	646 printf("read buffer_size_in_frames=%"PRId64", buffer_size_in_frames_remaining=%"PRId64"\n", buffer_size_in_frames, buffer_size_in_frames_remaining);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	647
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	648 /* ExtAudioFileRead returns the number of frames actually read. Need to convert back to bytes. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	649 data_buffer_size = (Uint32)(buffer_size_in_frames * core_audio_file_container->outputFormat->mBytesPerFrame);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	650 // printf("data_buffer_size=%d\n", data_buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	651
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	652 total_bytes_read += data_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	653 bytes_remaining = bytes_remaining - data_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	654
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	655 /* Note: 0 == buffer_size_in_frames is a legitimate value meaning we are EOF. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	656 if(0 == buffer_size_in_frames)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	657 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	658 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	659 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	660
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	661 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	662 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	663 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	664 SNDDBG(("Core Audio: ExtAudioFileReadfailed, reason: [%s].\n", CoreAudio_FourCCToString(error_result)));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	665
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	666 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	667 break;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	668
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	669 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	670 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	671
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	672 if( (!(sample->flags & SOUND_SAMPLEFLAG_EOF)) && (total_bytes_read < max_buffer_size))
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	673 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	674 SNDDBG(("Core Audio: ExtAudioFileReadfailed SOUND_SAMPLEFLAG_EAGAIN, reason: [total_bytes_read < max_buffer_size], %d, %d.\n", total_bytes_read , max_buffer_size));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	675
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	676 // Don't know what to do here.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	677 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	678 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	679 return total_bytes_read;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	680 } /* CoreAudio_read */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	681
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	682
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	683 static int CoreAudio_rewind(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	684 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	685 OSStatus error_result = noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	686 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	687 CoreAudioFileContainer* core_audio_file_container = (CoreAudioFileContainer *) internal->decoder_private;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	688
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	689 error_result = ExtAudioFileSeek(core_audio_file_container->extAudioFileRef, 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	690 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	691 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	692 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	693 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	694 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	695 } /* CoreAudio_rewind */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	696
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	697
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	698 static int CoreAudio_seek(Sound_Sample *sample, Uint32 ms)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	699 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	700 OSStatus error_result = noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	701 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	702 CoreAudioFileContainer* core_audio_file_container = (CoreAudioFileContainer *) internal->decoder_private;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	703 SInt64 frame_offset = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	704 AudioStreamBasicDescription actual_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	705 UInt32 format_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	706
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	707 format_size = sizeof(AudioStreamBasicDescription);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	708 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	709 *core_audio_file_container->audioFileID,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	710 kAudioFilePropertyDataFormat,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	711 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	712 &actual_format
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	713 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	714 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	715 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	716 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	717 BAIL_MACRO("Core Audio: Could not GetProperty for kAudioFilePropertyDataFormat.", 0);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	718 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	719
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	720 // packetIndex = (pos * sampleRate) / framesPerPacket
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	721 frame_offset = (SInt64)((ms/1000.0 * actual_format.mSampleRate) / actual_format.mFramesPerPacket);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	722 // computed against actual format and not the client format
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	723 error_result = ExtAudioFileSeek(core_audio_file_container->extAudioFileRef, frame_offset);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	724 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	725 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	726 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	727 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	728
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	729 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	730 } /* CoreAudio_seek */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	731
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	732 #endif /* SOUND_SUPPORTS_COREAUDIO */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	733
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	734
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	735 /* end of ogg.c ... */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	736

Mercurial > SDL_sound_CoreAudio

annotate decoders/coreaudio.c @ 576:8d62447b75f2