SDL_sound_CoreAudio: decoders/coreaudio.c annotate

annotate decoders/coreaudio.c @ 578:7ff36153215a

Fixed 48-byte memory leak.

author	Eric Wing <ewing . public \|-at-\| gmail . com>
date	Sat, 06 Nov 2010 00:27:45 -0700
parents	af33b35a55c1
children	6927c489964c 33a77ceaed26

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",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	62 "caf",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	63 "Sd2f",
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	64 "Sd2",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	65 "au",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	66 "next",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	67 "mp2",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	68 "mp1",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	69 "ac3",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	70 "3gpp",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	71 "3gp2",
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	72 "amrf",
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	73 "amr",
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	74 "ima4",
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	75 "ima",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	76 NULL
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	77 };
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	78 const Sound_DecoderFunctions __Sound_DecoderFunctions_CoreAudio =
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	79 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	80 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	81 extensions_coreaudio,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	82 "Decode audio through Core Audio through",
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	83 "Eric Wing <ewing . public @ playcontrol.net>",
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	84 "http://playcontrol.net"
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	85 },
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	86
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	87 CoreAudio_init, /* init() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	88 CoreAudio_quit, /* quit() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	89 CoreAudio_open, /* open() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	90 CoreAudio_close, /* close() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	91 CoreAudio_read, /* read() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	92 CoreAudio_rewind, /* rewind() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	93 CoreAudio_seek /* seek() method */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	94 };
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	95
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	96
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	97 static int CoreAudio_init(void)
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 return(1); /* always succeeds. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	100 } /* CoreAudio_init */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	101
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 static void CoreAudio_quit(void)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	104 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	105 /* it's a no-op. */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	106 } /* CoreAudio_quit */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	107
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	108 /*
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	109 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	110 kAudioFileAIFFType = 'AIFF',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	111 kAudioFileAIFCType = 'AIFC',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	112 kAudioFileWAVEType = 'WAVE',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	113 kAudioFileSoundDesigner2Type = 'Sd2f',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	114 kAudioFileNextType = 'NeXT',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	115 kAudioFileMP3Type = 'MPG3',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	116 kAudioFileMP2Type = 'MPG2',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	117 kAudioFileMP1Type = 'MPG1',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	118 kAudioFileAC3Type = 'ac-3',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	119 kAudioFileAAC_ADTSType = 'adts',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	120 kAudioFileMPEG4Type = 'mp4f',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	121 kAudioFileM4AType = 'm4af',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	122 kAudioFileCAFType = 'caff',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	123 kAudioFile3GPType = '3gpp',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	124 kAudioFile3GP2Type = '3gp2',
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	125 kAudioFileAMRType = 'amrf'
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	126 */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	127 static AudioFileTypeID CoreAudio_GetAudioTypeForExtension(const char* file_extension)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	128 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	129 if( (__Sound_strcasecmp(file_extension, "aif") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	130 \|\| (__Sound_strcasecmp(file_extension, "aiff") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	131 \|\| (__Sound_strcasecmp(file_extension, "aifc") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	134 return kAudioFileAIFCType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	135 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	136 else if( (__Sound_strcasecmp(file_extension, "wav") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	137 \|\| (__Sound_strcasecmp(file_extension, "wave") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	138 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	139 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	140 return kAudioFileWAVEType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	141 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	142 else if( (__Sound_strcasecmp(file_extension, "mp3") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	143 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	144 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	145 return kAudioFileMP3Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	146 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	147 else if( (__Sound_strcasecmp(file_extension, "mp4") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	150 return kAudioFileMPEG4Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	151 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	152 else if( (__Sound_strcasecmp(file_extension, "m4a") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	155 return kAudioFileM4AType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	156 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	157 else if( (__Sound_strcasecmp(file_extension, "aac") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	160 return kAudioFileAAC_ADTSType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	161 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	162 else if( (__Sound_strcasecmp(file_extension, "aac") == 0)
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 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	165 return kAudioFileAAC_ADTSType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	166 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	167 else if( (__Sound_strcasecmp(file_extension, "caf") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	168 \|\| (__Sound_strcasecmp(file_extension, "caff") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	169 )
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 return kAudioFileCAFType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	172 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	173 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	174 \|\| (__Sound_strcasecmp(file_extension, "sd2") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	175 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	176 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	177 return kAudioFileSoundDesigner2Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	178 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	179 else if( (__Sound_strcasecmp(file_extension, "au") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	180 \|\| (__Sound_strcasecmp(file_extension, "next") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	181 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	182 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	183 return kAudioFileNextType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	184 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	185 else if( (__Sound_strcasecmp(file_extension, "mp2") == 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 kAudioFileMP2Type;
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, "mp1") == 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 kAudioFileMP1Type;
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, "ac3") == 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 kAudioFileAC3Type;
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, "3gpp") == 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 kAudioFile3GPType;
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, "3gp2") == 0)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	206 )
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 return kAudioFile3GP2Type;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	209 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	210 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	211 \|\| (__Sound_strcasecmp(file_extension, "amr") == 0)
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	212 )
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 return kAudioFileAMRType;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	215 }
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	216 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	217 \|\| (__Sound_strcasecmp(file_extension, "ima") == 0)
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	218 )
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	219 {
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	220 /* not sure about this one */
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	221 return kAudioFileCAFType;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	222 }
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	223 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	224 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	225 return 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	226 }
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	227
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	228 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	229
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	230 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	231 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	232 static char return_string[16];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	233 uint32_t big_endian_code = htonl(error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	234 char* big_endian_str = (char*)&big_endian_code;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	235 // 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	236 if(isprint(big_endian_str[0])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	237 && isprint(big_endian_str[1])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	238 && isprint(big_endian_str[2])
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	239 && isprint (big_endian_str[3]))
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	240 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	241 return_string[0] = '\'';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	242 return_string[1] = big_endian_str[0];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	243 return_string[2] = big_endian_str[1];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	244 return_string[3] = big_endian_str[2];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	245 return_string[4] = big_endian_str[3];
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	246 return_string[5] = '\'';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	247 return_string[6] = '\0';
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	248 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	249 else if(error_code > -200000 && error_code < 200000)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	250 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	251 // no, format it as an integer
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	252 snprintf(return_string, 16, "%d", error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	253 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	254 else
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 // 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	257 snprintf(return_string, 16, "0x%x", error_code);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	258 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	259 return return_string;
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	262
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	263
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	264 SInt64 CoreAudio_SizeCallback(void* inClientData)
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 SDL_RWops* rw_ops = (SDL_RWops*)inClientData;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	267 SInt64 current_position = SDL_RWtell(rw_ops);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	268 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	269 SDL_RWseek(rw_ops, current_position, SEEK_SET);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	270 // fprintf(stderr, "CoreAudio_SizeCallback:%d\n", end_position);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	271
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	272 return end_position;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	273 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	274
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	275 OSStatus CoreAudio_ReadCallback(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	276 void* inClientData,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	277 SInt64 inPosition,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	278 UInt32 requestCount,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	279 void* data_buffer,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	280 UInt32* actualCount
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	281 )
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	282 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	283 SDL_RWops* rw_ops = (SDL_RWops*)inClientData;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	284 SDL_RWseek(rw_ops, inPosition, SEEK_SET);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	285 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	286 // 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	287 // 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	288
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	289 *actualCount = bytes_actually_read;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	290 return noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	291 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	292
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	293
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	294 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	295 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	296 CoreAudioFileContainer* core_audio_file_container;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	297 AudioFileID* audio_file_id;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	298 OSStatus error_result;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	299 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	300 AudioStreamBasicDescription actual_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	301 AudioStreamBasicDescription output_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	302 Float64 estimated_duration;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	303 UInt32 format_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	304
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	305
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	306 core_audio_file_container = (CoreAudioFileContainer*)malloc(sizeof(CoreAudioFileContainer));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	307 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	308
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	309
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	310 audio_file_id = (AudioFileID*)malloc(sizeof(AudioFileID));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	311 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	312
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	313 error_result = AudioFileOpenWithCallbacks(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	314 internal->rw,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	315 CoreAudio_ReadCallback,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	316 NULL,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	317 CoreAudio_SizeCallback,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	318 NULL,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	319 CoreAudio_GetAudioTypeForExtension(ext),
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	320 audio_file_id
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	321 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	322 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	323 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	324 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	325 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	326 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	327 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	328 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	329 } /* if */
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 format_size = sizeof(actual_format);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	332 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	333 *audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	334 kAudioFilePropertyDataFormat,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	335 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	336 &actual_format
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 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	339 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	340 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	341 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	342 free(core_audio_file_container);
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	343 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	344 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	345 } /* if */
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 format_size = sizeof(estimated_duration);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	348 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	349 *audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	350 kAudioFilePropertyEstimatedDuration,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	351 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	352 &estimated_duration
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 if (error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	355 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	356 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	357 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	358 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	359 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	360 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	361 } /* if */
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	364 core_audio_file_container->audioFileID = audio_file_id;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	365
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	366 internal->decoder_private = core_audio_file_container;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	367
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	368 sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	369 sample->actual.rate = (UInt32) actual_format.mSampleRate;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	370 sample->actual.channels = (UInt8)actual_format.mChannelsPerFrame;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	371 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	372
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	373 #if 0
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	374 /* 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	375 if(actual_format.mFormatFlags & kAudioFormatFlagIsBigEndian)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	376 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	377 if(16 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	378 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	379 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	380 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	381 sample->actual.format = AUDIO_S16MSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	382 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	383 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	384 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	385 sample->actual.format = AUDIO_U16MSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	386 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	387 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	388 else if(8 == actual_format.mBitsPerChannel)
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 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
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_S8;
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 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	395 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	396 sample->actual.format = AUDIO_U8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	397 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	398 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	399 else // might be 0 for undefined?
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 // 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	402 sample->actual.format = AUDIO_S16SYS;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	403 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	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 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	407 else // little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	408 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	409 if(16 == actual_format.mBitsPerChannel)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	410 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	411 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	412 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	413 sample->actual.format = AUDIO_S16LSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	414 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	415 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	416 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	417 sample->actual.format = AUDIO_U16LSB;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	418 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	419 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	420 else if(8 == actual_format.mBitsPerChannel)
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 if(kAudioFormatFlagIsSignedInteger & actual_format.mFormatFlags)
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_S8;
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 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	427 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	428 sample->actual.format = AUDIO_U8;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	429 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	430 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	431 else // might be 0 for undefined?
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 sample->actual.format = AUDIO_S16SYS;
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 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	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 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	439 #else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	440
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	441
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	442
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	443 /*
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	444 * 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	445 * 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	446 * 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	447 * as the desired format.
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 sample->actual.format = (sample->desired.format == 0) ?
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	450 AUDIO_S16SYS : sample->desired.format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	451 #endif
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	452
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	453
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	454 SNDDBG(("CoreAudio: channels == (%d).\n", sample->actual.channels));
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	455 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	456 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	457 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	458
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 error_result = ExtAudioFileWrapAudioFileID(*audio_file_id,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	462 false, // set to false for read-only
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	463 &core_audio_file_container->extAudioFileRef
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	464 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	465 if(error_result != noErr)
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 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	468 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	469 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	470 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	471 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	472 } /* if */
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	475 /* 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	476 * 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	477 * optimal format on iPhone/iPod Touch hardware.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	478 * 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	479 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	480 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	481 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	482 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	483 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	484
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	485 if(sample->desired.format == 0)
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 // do AUDIO_S16SYS
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	488 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	489 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	490 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	491 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	492 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	493 output_format.mFormatFlags = 0; // clear flags
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	494 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	495 // Mask against bitsize
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	496 if(0xFF & sample->desired.format)
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 output_format.mBitsPerChannel = 16; /* 16-bit */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	499 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	500 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	501 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	502 output_format.mBitsPerChannel = 8; /* 8-bit */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	503 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	504
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	505 // Mask for signed/unsigned
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	506 if((1<<15) & sample->desired.format)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	507 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	508 output_format.mFormatFlags = output_format.mFormatFlags \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	509
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 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	512 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	513 // no flag set for unsigned
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 // Mask for big/little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	516 if((1<<12) & sample->desired.format)
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 output_format.mFormatFlags = output_format.mFormatFlags \| kAudioFormatFlagIsBigEndian;
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 else
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 // no flag set for little endian
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	523 }
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	526 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	527 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	528
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	529
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 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	532 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	533 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	534 // output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsPacked \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	535 output_format.mFormatFlags = kAudioFormatFlagsNativeEndian \| kAudioFormatFlagIsSignedInteger;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	536 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	537 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	538 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	539 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	540 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	541 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	542 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	543 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	544 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	545 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	546 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	547 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	548 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	549
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	550
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	551 /* Set the desired client (output) data format */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	552 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	553 if(noErr != error_result)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	554 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	555 ExtAudioFileDispose(core_audio_file_container->extAudioFileRef);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	556 AudioFileClose(*audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	557 free(audio_file_id);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	558 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	559 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	560 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	561 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	562
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	563
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	564 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	565 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	566
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	567
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 /* 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	570 * info will be returned to the user.
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	571 */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	572 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	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 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	577 } /* CoreAudio_open */
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	580 static void CoreAudio_close(Sound_Sample *sample)
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 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	583 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	584
578 7ff36153215a Fixed 48-byte memory leak. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 577 diff changeset	585 free(core_audio_file_container->outputFormat);
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	586 ExtAudioFileDispose(core_audio_file_container->extAudioFileRef);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	587 AudioFileClose(*core_audio_file_container->audioFileID);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	588 free(core_audio_file_container->audioFileID);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	589 free(core_audio_file_container);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	590
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	591 } /* CoreAudio_close */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	592
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	593
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	594 static Uint32 CoreAudio_read(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	595 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	596 OSStatus error_result = noErr;
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	597 /* 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	598 * 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	599 * bits which turn to 0.
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	600 */
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	601 UInt32 buffer_size_in_frames = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	602 UInt32 buffer_size_in_frames_remaining = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	603 UInt32 total_frames_read = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	604 UInt32 data_buffer_size = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	605 UInt32 bytes_remaining = 0;
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	606 size_t total_bytes_read = 0;
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	607 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	608 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	609 UInt32 max_buffer_size = internal->buffer_size;
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	610
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	611 // 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	612 // 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	613
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	614 /* 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	615 /* 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	616 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	617 // 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	618
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	619
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	620 // void* temp_buffer = malloc(max_buffer_size);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	621
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	622 AudioBufferList audio_buffer_list;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	623 audio_buffer_list.mNumberBuffers = 1;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	624 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	625 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	626 audio_buffer_list.mBuffers[0].mData = internal->buffer;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	627
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	628
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	629 bytes_remaining = max_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	630 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	631
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	632 // oops. Due to the kAudioFormatFlagIsPacked bug,
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	633 // 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	634 // 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	635 // So this while-loop might be unnecessary.
af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	636 // 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	637 // 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	638 // 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	639 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	640 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	641
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	642 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	643 // 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	644
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	645 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	646
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	647 // 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	648
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	649
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	650 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	651 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	652
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 /* Read the data into an AudioBufferList */
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	655 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	656 if(error_result == noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	657 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	658
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 /* Success */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	661
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	662 total_frames_read += buffer_size_in_frames;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	663 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	664
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	665 // 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	666
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	667 /* 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	668 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	669 // 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	670
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	671 total_bytes_read += data_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	672 bytes_remaining = bytes_remaining - data_buffer_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	673
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	674 /* 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	675 if(0 == buffer_size_in_frames)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	676 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	677 sample->flags \|= SOUND_SAMPLEFLAG_EOF;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	678 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	679
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 else
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	682 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	683 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	684
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	685 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	686 break;
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 }
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
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	691 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	692 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	693 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	694
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	695 /* Don't know what to do here. */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	696 sample->flags \|= SOUND_SAMPLEFLAG_EAGAIN;
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 return total_bytes_read;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	699 } /* CoreAudio_read */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	700
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	701
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	702 static int CoreAudio_rewind(Sound_Sample *sample)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	703 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	704 OSStatus error_result = noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	705 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	706 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	707
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	708 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	709 if(error_result != noErr)
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 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	712 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	713 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	714 } /* CoreAudio_rewind */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	715
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	716
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	717 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	718 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	719 OSStatus error_result = noErr;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	720 Sound_SampleInternal internal = (Sound_SampleInternal ) sample->opaque;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	721 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	722 SInt64 frame_offset = 0;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	723 AudioStreamBasicDescription actual_format;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	724 UInt32 format_size;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	725
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	726 format_size = sizeof(AudioStreamBasicDescription);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	727 error_result = AudioFileGetProperty(
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	728 *core_audio_file_container->audioFileID,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	729 kAudioFilePropertyDataFormat,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	730 &format_size,
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	731 &actual_format
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	732 );
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	733 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	734 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	735 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	736 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	737 } /* if */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	738
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	739 // packetIndex = (pos * sampleRate) / framesPerPacket
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	740 frame_offset = (SInt64)((ms/1000.0 * actual_format.mSampleRate) / actual_format.mFramesPerPacket);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	741 // 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	742 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	743 if(error_result != noErr)
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	744 {
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	745 sample->flags \|= SOUND_SAMPLEFLAG_ERROR;
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	746 }
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	747
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	748 return(1);
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	749 } /* CoreAudio_seek */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	750
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	751 #endif /* SOUND_SUPPORTS_COREAUDIO */
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	752
8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	753
577 af33b35a55c1 Minor cleanups. Ready to release. Eric Wing <ewing . public \|-at-\| gmail . com> parents: 576 diff changeset	754 /* end of coreaudio.c ... */
576 8d62447b75f2 Added new Core Audio backend. Eric Wing <ewing . public \|-at-\| gmail . com> parents: diff changeset	755

Mercurial > SDL_sound_CoreAudio

annotate decoders/coreaudio.c @ 578:7ff36153215a