SDL_sound_CoreAudio: decoders/coreaudio.c annotate

annotate decoders/coreaudio.c @ 581:2264b134b7ac

merged

author	Eric Wing <ewing . public \|-at-\| gmail . com>
date	Tue, 23 Nov 2010 18:25:44 -0800
parents	33a77ceaed26 6927c489964c
children

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
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	3 * Copyright (C) 2010 Eric Wing <ewing . public @ playcontrol.net>
576 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 static int CoreAudio_init(void);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	44 static void CoreAudio_quit(void);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	45 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	46 static void CoreAudio_close(Sound_Sample *sample);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	47 static Uint32 CoreAudio_read(Sound_Sample *sample);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	48 static int CoreAudio_rewind(Sound_Sample *sample);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	49 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	50
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	51 static const char *extensions_coreaudio[] =
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 "aif",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	54 "aiff",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	55 "aifc",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	56 "wav",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	57 "wave",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	58 "mp3",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	59 "mp4",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	60 "m4a",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	61 "aac",
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	62 "adts",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	63 "caf",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	64 "Sd2f",
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	65 "Sd2",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	66 "au",
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	67 "snd",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	68 "next",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	69 "mp2",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	70 "mp1",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	71 "ac3",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	72 "3gpp",
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	73 "3gp",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	74 "3gp2",
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	75 "3g2",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	76 "amrf",
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	77 "amr",
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	78 "ima4",
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	79 "ima",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	80 NULL
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	81 };
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	82 const Sound_DecoderFunctions __Sound_DecoderFunctions_CoreAudio =
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 extensions_coreaudio,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	86 "Decode audio through Core Audio through",
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	87 "Eric Wing <ewing . public @ playcontrol.net>",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	88 "http://playcontrol.net"
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	89 },
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	90
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	91 CoreAudio_init, /* init() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	92 CoreAudio_quit, /* quit() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	93 CoreAudio_open, /* open() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	94 CoreAudio_close, /* close() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	95 CoreAudio_read, /* read() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	96 CoreAudio_rewind, /* rewind() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	97 CoreAudio_seek /* seek() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	98 };
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 int CoreAudio_init(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 return(1); /* always succeeds. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	104 } /* CoreAudio_init */
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 void CoreAudio_quit(void)
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 /* it's a no-op. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	110 } /* CoreAudio_quit */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	111
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	112 /*
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	113 http://developer.apple.com/library/ios/#documentation/MusicAudio/Reference/AudioFileConvertRef/Reference/reference.html
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	114 kAudioFileAIFFType = 'AIFF',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	115 kAudioFileAIFCType = 'AIFC',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	116 kAudioFileWAVEType = 'WAVE',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	117 kAudioFileSoundDesigner2Type = 'Sd2f',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	118 kAudioFileNextType = 'NeXT',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	119 kAudioFileMP3Type = 'MPG3',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	120 kAudioFileMP2Type = 'MPG2',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	121 kAudioFileMP1Type = 'MPG1',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	122 kAudioFileAC3Type = 'ac-3',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	123 kAudioFileAAC_ADTSType = 'adts',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	124 kAudioFileMPEG4Type = 'mp4f',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	125 kAudioFileM4AType = 'm4af',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	126 kAudioFileCAFType = 'caff',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	127 kAudioFile3GPType = '3gpp',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	128 kAudioFile3GP2Type = '3gp2',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	129 kAudioFileAMRType = 'amrf'
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	130 */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	131 static AudioFileTypeID CoreAudio_GetAudioTypeForExtension(const char* file_extension)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	132 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	133 if( (__Sound_strcasecmp(file_extension, "aif") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	134 \|\| (__Sound_strcasecmp(file_extension, "aiff") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	135 \|\| (__Sound_strcasecmp(file_extension, "aifc") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	138 return kAudioFileAIFCType;
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 else if( (__Sound_strcasecmp(file_extension, "wav") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	141 \|\| (__Sound_strcasecmp(file_extension, "wave") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	142 )
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 return kAudioFileWAVEType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	145 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	146 else if( (__Sound_strcasecmp(file_extension, "mp3") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	147 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	148 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	149 return kAudioFileMP3Type;
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 else if( (__Sound_strcasecmp(file_extension, "mp4") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	154 return kAudioFileMPEG4Type;
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 else if( (__Sound_strcasecmp(file_extension, "m4a") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	159 return kAudioFileM4AType;
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 else if( (__Sound_strcasecmp(file_extension, "aac") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	162 )
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 return kAudioFileAAC_ADTSType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	165 }
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	166 else if( (__Sound_strcasecmp(file_extension, "adts") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	167 )
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 return kAudioFileAAC_ADTSType;
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 else if( (__Sound_strcasecmp(file_extension, "caf") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	172 \|\| (__Sound_strcasecmp(file_extension, "caff") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	175 return kAudioFileCAFType;
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 else if( (__Sound_strcasecmp(file_extension, "Sd2f") == 0)
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	178 \|\| (__Sound_strcasecmp(file_extension, "sd2") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	179 )
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 return kAudioFileSoundDesigner2Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	182 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	183 else if( (__Sound_strcasecmp(file_extension, "au") == 0)
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	184 \|\| (__Sound_strcasecmp(file_extension, "snd") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	185 \|\| (__Sound_strcasecmp(file_extension, "next") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	188 return kAudioFileNextType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	189 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	190 else if( (__Sound_strcasecmp(file_extension, "mp2") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	193 return kAudioFileMP2Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	194 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	195 else if( (__Sound_strcasecmp(file_extension, "mp1") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	196 )
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 return kAudioFileMP1Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	199 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	200 else if( (__Sound_strcasecmp(file_extension, "ac3") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	201 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	202 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	203 return kAudioFileAC3Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	204 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	205 else if( (__Sound_strcasecmp(file_extension, "3gpp") == 0)
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	206 \|\| (__Sound_strcasecmp(file_extension, "3gp") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	207 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	208 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	209 return kAudioFile3GPType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	210 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	211 else if( (__Sound_strcasecmp(file_extension, "3gp2") == 0)
580 33a77ceaed26 Added more file extension variations for CoreAudio. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 578 diff changeset	212 \|\| (__Sound_strcasecmp(file_extension, "3g2") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	213 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	214 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	215 return kAudioFile3GP2Type;
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 else if( (__Sound_strcasecmp(file_extension, "amrf") == 0)
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	218 \|\| (__Sound_strcasecmp(file_extension, "amr") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	219 )
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 return kAudioFileAMRType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	222 }
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	223 else if( (__Sound_strcasecmp(file_extension, "ima4") == 0)
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	224 \|\| (__Sound_strcasecmp(file_extension, "ima") == 0)
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	225 )
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	226 {
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	227 /* not sure about this one */
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	228 return kAudioFileCAFType;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	229 }
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	230 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	231 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	232 return 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	233 }
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	234
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	235 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	236
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	237 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	238 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	239 static char return_string[16];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	240 uint32_t big_endian_code = htonl(error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	241 char* big_endian_str = (char*)&big_endian_code;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	242 // 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	243 if(isprint(big_endian_str[0])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	244 && isprint(big_endian_str[1])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	245 && isprint(big_endian_str[2])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	246 && isprint (big_endian_str[3]))
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_string[0] = '\'';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	249 return_string[1] = big_endian_str[0];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	250 return_string[2] = big_endian_str[1];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	251 return_string[3] = big_endian_str[2];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	252 return_string[4] = big_endian_str[3];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	253 return_string[5] = '\'';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	254 return_string[6] = '\0';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	255 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	256 else if(error_code > -200000 && error_code < 200000)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	257 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	258 // no, format it as an integer
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	259 snprintf(return_string, 16, "%d", error_code);
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 else
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 // 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	264 snprintf(return_string, 16, "0x%x", error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	265 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	266 return return_string;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	267 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	268
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	269
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 SInt64 CoreAudio_SizeCallback(void* inClientData)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	272 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	273 SDL_RWops* rw_ops = (SDL_RWops*)inClientData;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	274 SInt64 current_position = SDL_RWtell(rw_ops);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	275 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	276 SDL_RWseek(rw_ops, current_position, SEEK_SET);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	277 // fprintf(stderr, "CoreAudio_SizeCallback:%d\n", end_position);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	278
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	279 return end_position;
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 OSStatus CoreAudio_ReadCallback(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	283 void* inClientData,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	284 SInt64 inPosition,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	285 UInt32 requestCount,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	286 void* data_buffer,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	287 UInt32* actualCount
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	288 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	289 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	290 SDL_RWops* rw_ops = (SDL_RWops*)inClientData;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	291 SDL_RWseek(rw_ops, inPosition, SEEK_SET);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	292 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	293 // 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	294 // 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	295
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	296 *actualCount = bytes_actually_read;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	297 return noErr;
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	300
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	301 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	302 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	303 CoreAudioFileContainer* core_audio_file_container;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	304 AudioFileID* audio_file_id;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	305 OSStatus error_result;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	306 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	307 AudioStreamBasicDescription actual_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	308 AudioStreamBasicDescription output_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	309 Float64 estimated_duration;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	310 UInt32 format_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	311
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 core_audio_file_container = (CoreAudioFileContainer*)malloc(sizeof(CoreAudioFileContainer));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	314 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	315
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	316
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	317 audio_file_id = (AudioFileID*)malloc(sizeof(AudioFileID));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	318 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	319
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	320 error_result = AudioFileOpenWithCallbacks(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	321 internal->rw,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	322 CoreAudio_ReadCallback,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	323 NULL,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	324 CoreAudio_SizeCallback,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	325 NULL,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	326 CoreAudio_GetAudioTypeForExtension(ext),
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	327 audio_file_id
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 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	330 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	331 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	332 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	333 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	334 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	335 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	336 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	337
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	338 format_size = sizeof(actual_format);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	339 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	340 *audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	341 kAudioFilePropertyDataFormat,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	342 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	343 &actual_format
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 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	346 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	347 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	348 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	349 free(core_audio_file_container);
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	350 SNDDBG(("Core Audio: AudioFileGetProperty failed. reason: [%s]", CoreAudio_FourCCToString(error_result)));
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	351 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	352 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	353
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	354 format_size = sizeof(estimated_duration);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	355 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	356 *audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	357 kAudioFilePropertyEstimatedDuration,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	358 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	359 &estimated_duration
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	360 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	361 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	362 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	363 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	364 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	365 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	366 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	367 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	368 } /* if */
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	371 core_audio_file_container->audioFileID = audio_file_id;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	372
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	373 internal->decoder_private = core_audio_file_container;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	374
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	375 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	376 sample->actual.rate = (UInt32) actual_format.mSampleRate;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	377 sample->actual.channels = (UInt8)actual_format.mChannelsPerFrame;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	378 internal->total_time = (SInt32)(estimated_duration * 1000.0 + 0.5);
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	379
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	380 #if 0
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	381 /* 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	382 if(actual_format.mFormatFlags & kAudioFormatFlagIsBigEndian)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	383 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	384 if(16 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	385 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	386 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
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 sample->actual.format = AUDIO_S16MSB;
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 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	391 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	392 sample->actual.format = AUDIO_U16MSB;
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 else if(8 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	396 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	397 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	398 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	399 sample->actual.format = AUDIO_S8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	400 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	401 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	402 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	403 sample->actual.format = AUDIO_U8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	404 }
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 else // might be 0 for undefined?
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 // 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	409 sample->actual.format = AUDIO_S16SYS;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	410 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	411
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 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	414 else // little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	415 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	416 if(16 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	417 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	418 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
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 sample->actual.format = AUDIO_S16LSB;
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 else
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 sample->actual.format = AUDIO_U16LSB;
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 else if(8 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	428 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	429 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
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 sample->actual.format = AUDIO_S8;
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 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	434 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	435 sample->actual.format = AUDIO_U8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	436 }
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 else // might be 0 for undefined?
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	439 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	440 sample->actual.format = AUDIO_S16SYS;
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 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	443 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	444
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	445 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	446 #else
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 /*
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	451 * 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	452 * 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	453 * 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	454 * as the desired format.
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 sample->actual.format = (sample->desired.format == 0) ?
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	457 AUDIO_S16SYS : sample->desired.format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	458 #endif
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	459
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	460
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	461 SNDDBG(("CoreAudio: channels == (%d).\n", sample->actual.channels));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	462 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	463 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	464 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	465
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	466
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	467
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	468 error_result = ExtAudioFileWrapAudioFileID(*audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	469 false, // set to false for read-only
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	470 &core_audio_file_container->extAudioFileRef
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	471 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	472 if(error_result != noErr)
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 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	475 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	476 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	477 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	478 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	479 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	480
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 /* 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	483 * 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	484 * optimal format on iPhone/iPod Touch hardware.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	485 * 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	486 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	487 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	488 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	489 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	490 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	491
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	492 if(sample->desired.format == 0)
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 // do AUDIO_S16SYS
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	495 output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsSignedInteger \| kAudioFormatFlagIsPacked; // I seem to read failures problems without kAudioFormatFlagIsPacked. From a mailing list post, this seems to be a Core Audio bug.
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	496 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	497 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	498 else
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 output_format.mFormatFlags = 0; // clear flags
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	501 output_format.mFormatFlags \|= kAudioFormatFlagIsPacked; // I seem to read failures problems without kAudioFormatFlagIsPacked. From a mailing list post, this seems to be a Core Audio bug.
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	502 // Mask against bitsize
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	503 if(0xFF & sample->desired.format)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	504 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	505 output_format.mBitsPerChannel = 16; /* 16-bit */
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 else
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 output_format.mBitsPerChannel = 8; /* 8-bit */
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	512 // Mask for signed/unsigned
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	513 if((1<<15) & sample->desired.format)
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.mFormatFlags = output_format.mFormatFlags \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	516
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	517 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	518 else
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 // no flag set for unsigned
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	521 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	522 // Mask for big/little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	523 if((1<<12) & sample->desired.format)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	524 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	525 output_format.mFormatFlags = output_format.mFormatFlags \| kAudioFormatFlagIsBigEndian;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	526 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	527 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	528 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	529 // no flag set for little endian
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 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	532
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	533 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	534 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	535
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	536
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	537 /*
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	538 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	539 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	540 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	541 // output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsPacked \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	542 output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	543 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	544 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	545 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	546 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	547 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	548 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	549 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	550 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	551 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	552 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	553 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	554 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	555 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	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 /* Set the desired client (output) data format */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	559 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	560 if(noErr != error_result)
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 ExtAudioFileDispose(core_audio_file_container->extAudioFileRef);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	563 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	564 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	565 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	566 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	567 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	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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	571 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	572 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	573
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	576 /* 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	577 * info will be returned to the user.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	578 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	579 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	580
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 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	584 } /* CoreAudio_open */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	585
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	586
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	587 static void CoreAudio_close(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	588 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	589 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	590 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	591
578 7ff36153215a Fixed 48-byte memory leak. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 577 diff changeset	592 free(core_audio_file_container->outputFormat);
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	593 ExtAudioFileDispose(core_audio_file_container->extAudioFileRef);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	594 AudioFileClose(*core_audio_file_container->audioFileID);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	595 free(core_audio_file_container->audioFileID);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	596 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	597
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	598 } /* CoreAudio_close */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	599
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	600
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	601 static Uint32 CoreAudio_read(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	602 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	603 OSStatus error_result = noErr;
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	604 /* Documentation/example shows SInt64, but is problematic for big endian
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	605 * on 32-bit cast for ExtAudioFileRead() because it takes the upper
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	606 * bits which turn to 0.
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	607 */
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	608 UInt32 buffer_size_in_frames = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	609 UInt32 buffer_size_in_frames_remaining = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	610 UInt32 total_frames_read = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	611 UInt32 data_buffer_size = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	612 UInt32 bytes_remaining = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	613 size_t total_bytes_read = 0;
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	614 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	615 CoreAudioFileContainer* core_audio_file_container = (CoreAudioFileContainer *) internal->decoder_private;
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	616 UInt32 max_buffer_size = internal->buffer_size;
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	617
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	618 // 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	619 // 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	620
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	621 /* 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	622 /* 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	623 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	624 // 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	625
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	626
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	627 // void* temp_buffer = malloc(max_buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	628
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	629 AudioBufferList audio_buffer_list;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	630 audio_buffer_list.mNumberBuffers = 1;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	631 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	632 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	633 audio_buffer_list.mBuffers[0].mData = internal->buffer;
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	636 bytes_remaining = max_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	637 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	638
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	639 // oops. Due to the kAudioFormatFlagIsPacked bug,
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	640 // I was misled to believe that Core Audio
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	641 // was not always filling my entire requested buffer.
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	642 // So this while-loop might be unnecessary.
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	643 // However, I have not exhaustively tested all formats,
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	644 // so maybe it is possible this loop is useful.
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	645 // It might also handle the not-evenly disvisible case above.
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	646 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	647 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	648
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	649 data_buffer_size = (UInt32)(buffer_size_in_frames * core_audio_file_container->outputFormat->mBytesPerFrame);
576 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 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	653
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	654 // 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	655
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	656
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	657 audio_buffer_list.mBuffers[0].mDataByteSize = bytes_remaining;
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	658 audio_buffer_list.mBuffers[0].mData = &(((UInt8*)internal->buffer)[total_bytes_read]);
576 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 /* Read the data into an AudioBufferList */
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	662 error_result = ExtAudioFileRead(core_audio_file_container->extAudioFileRef, &buffer_size_in_frames, &audio_buffer_list);
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	663 if(error_result == noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	664 {
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	667 /* Success */
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 total_frames_read += buffer_size_in_frames;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	670 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	671
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	672 // printf("read buffer_size_in_frames=%"PRId64", buffer_size_in_frames_remaining=%"PRId64"\n", buffer_size_in_frames, buffer_size_in_frames_remaining);
576 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 /* ExtAudioFileRead returns the number of frames actually read. Need to convert back to bytes. */
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	675 data_buffer_size = (UInt32)(buffer_size_in_frames * core_audio_file_container->outputFormat->mBytesPerFrame);
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	676 // 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	677
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	678 total_bytes_read += data_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	679 bytes_remaining = bytes_remaining - data_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	680
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	681 /* 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	682 if(0 == buffer_size_in_frames)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	683 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	684 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	685 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	686
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	687 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	688 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	689 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	690 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	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 break;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	694
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	695 }
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 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	699 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	700 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	701
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	702 /* Don't know what to do here. */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	703 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	704 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	705 return total_bytes_read;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	706 } /* CoreAudio_read */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	707
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	708
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	709 static int CoreAudio_rewind(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	710 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	711 OSStatus error_result = noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	712 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	713 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	714
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	715 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	716 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	717 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	718 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
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 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	721 } /* CoreAudio_rewind */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	722
579 6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	723 /* Note: I found this tech note:
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	724 http://developer.apple.com/library/mac/#qa/qa2009/qa1678.html
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	725 I don't know if this applies to us. So far, I haven't noticed the problem,
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	726 so I haven't applied any of the techniques.
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	727 */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	728 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	729 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	730 OSStatus error_result = noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	731 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	732 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	733 SInt64 frame_offset = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	734 AudioStreamBasicDescription actual_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	735 UInt32 format_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	736
579 6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	737
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	738 /* I'm confused. The Apple documentation says this:
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	739 "Seek position is specified in the sample rate and frame count of the file’s audio data format
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	740 — not your application’s audio data format."
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	741 My interpretation is that I want to get the "actual format of the file and compute the frame offset.
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	742 But when I try that, seeking goes to the wrong place.
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	743 When I use outputFormat, things seem to work correctly.
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	744 I must be misinterpreting the documentation or doing something wrong.
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	745 */
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	746 #if 0 /* not working */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	747 format_size = sizeof(AudioStreamBasicDescription);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	748 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	749 *core_audio_file_container->audioFileID,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	750 kAudioFilePropertyDataFormat,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	751 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	752 &actual_format
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	753 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	754 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	755 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	756 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	757 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	758 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	759
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	760 // packetIndex = (pos * sampleRate) / framesPerPacket
579 6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	761 // frame_offset = (SInt64)((ms/1000.0 * actual_format.mSampleRate) / actual_format.mFramesPerPacket);
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	762 #else /* seems to work, but I'm confused */
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	763 // packetIndex = (pos * sampleRate) / framesPerPacket
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	764 frame_offset = (SInt64)((ms/1000.0 * core_audio_file_container->outputFormat->mSampleRate) / core_audio_file_container->outputFormat->mFramesPerPacket);
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	765 #endif
6927c489964c Bug fix for CoreAudio seeking. Comments inline in code. Eric Wing <ewing@anscamobile.com> parents: 578 diff changeset	766
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	767 // 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	768 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	769 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	770 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	771 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	772 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	773
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	774 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	775 } /* CoreAudio_seek */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	776
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	777 #endif /* SOUND_SUPPORTS_COREAUDIO */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	778
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	779
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	780 /* end of coreaudio.c ... */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	781

Mercurial > SDL_sound_CoreAudio

annotate decoders/coreaudio.c @ 581:2264b134b7ac