sdl-ios-xcode: src/audio/iphoneos/SDL_coreaudio

annotate src/audio/iphoneos/SDL_coreaudio_iphone.c @ 3468:789b97008d8a

My first OpenGL shader! Momma will be so proud! This shader implements the software renderer mask semantics where the source pixel is multiplied by the color and alpha modulation values and then any pixel with non-zero alpha is fully opaque. The OpenGL renderer on Mac OS X now passes all the automated render tests! :)

author	Sam Lantinga <slouken@libsdl.org>
date	Sat, 21 Nov 2009 05:29:31 +0000
parents	1e431c2631ee
children	f7b03b6838cb

rev	line source
2765 f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1 /*
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2 SDL - Simple DirectMedia Layer
2859 99210400e8b9 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 2765 diff changeset	3 Copyright (C) 1997-2009 Sam Lantinga
2765 f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5 This library is free software; you can redistribute it and/or
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	6 modify it under the terms of the GNU Lesser General Public
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	7 License as published by the Free Software Foundation; either
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	8 version 2.1 of the License, or (at your option) any later version.
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	9
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	13 Lesser General Public License for more details.
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	14
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	15 You should have received a copy of the GNU Lesser General Public
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	16 License along with this library; if not, write to the Free Software
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	18
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	19 Sam Lantinga
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	20 slouken@libsdl.org
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	21 */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	22 #include "SDL_config.h"
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	23
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	24 #include <AudioUnit/AudioUnit.h>
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	25
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	26 #include "SDL_audio.h"
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	27 #include "../SDL_audio_c.h"
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	28 #include "../SDL_sysaudio.h"
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	29 #include "SDL_coreaudio_iphone.h"
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	30
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	31 #define DEBUG_COREAUDIO 0
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	32
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	33 static void
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	34 COREAUDIO_Deinitialize(void)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	35 {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	36 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	37
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	38 /* The CoreAudio callback */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	39 static OSStatus
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40 outputCallback(void *inRefCon,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	41 AudioUnitRenderActionFlags * ioActionFlags,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	42 const AudioTimeStamp * inTimeStamp,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	43 UInt32 inBusNumber, UInt32 inNumberFrames,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	44 AudioBufferList * ioDataList)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	45 {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	46 SDL_AudioDevice this = (SDL_AudioDevice ) inRefCon;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	47 AudioBuffer *ioData = &ioDataList->mBuffers[0];
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	48 UInt32 remaining, len;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	49 void *ptr;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	51 /* Is there ever more than one buffer, and what do you do with it? */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	52 if (ioDataList->mNumberBuffers != 1) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	53 return noErr;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	54 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	55
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	56 /* Only do anything if audio is enabled and not paused */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	57 if (!this->enabled \|\| this->paused) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	58 SDL_memset(ioData->mData, this->spec.silence, ioData->mDataByteSize);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	59 return 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	60 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	61
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	62 /* No SDL conversion should be needed here, ever, since we accept
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	63 any input format in OpenAudio, and leave the conversion to CoreAudio.
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64 */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	65 /*
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	66 assert(!this->convert.needed);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67 assert(this->spec.channels == ioData->mNumberChannels);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	68 */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	69
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	70 remaining = ioData->mDataByteSize;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71 ptr = ioData->mData;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	72 while (remaining > 0) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	73 if (this->hidden->bufferOffset >= this->hidden->bufferSize) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	74 /* Generate the data */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	75 SDL_memset(this->hidden->buffer, this->spec.silence,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	76 this->hidden->bufferSize);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	77 SDL_mutexP(this->mixer_lock);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	78 (*this->spec.callback) (this->spec.userdata, this->hidden->buffer,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	79 this->hidden->bufferSize);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	80 SDL_mutexV(this->mixer_lock);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	81 this->hidden->bufferOffset = 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	82 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	83
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	84 len = this->hidden->bufferSize - this->hidden->bufferOffset;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	85 if (len > remaining)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	86 len = remaining;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	87 SDL_memcpy(ptr,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88 (char *) this->hidden->buffer + this->hidden->bufferOffset,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89 len);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	90 ptr = (char *) ptr + len;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	91 remaining -= len;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	92 this->hidden->bufferOffset += len;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	93 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	94
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	95 return 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	96 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	98 static OSStatus
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	99 inputCallback(void *inRefCon,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	100 AudioUnitRenderActionFlags * ioActionFlags,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	101 const AudioTimeStamp * inTimeStamp,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	102 UInt32 inBusNumber, UInt32 inNumberFrames,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103 AudioBufferList * ioData)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	104 {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	105 //err = AudioUnitRender(afr->fAudioUnit, ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, afr->fAudioBuffer);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	106 // !!! FIXME: write me!
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	107 return noErr;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	108 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	109
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	110
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	111 static void
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	112 COREAUDIO_CloseDevice(_THIS)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	113 {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	114 if (this->hidden != NULL) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	115 if (this->hidden->audioUnitOpened) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	116 OSStatus result = noErr;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117 AURenderCallbackStruct callback;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	118 const AudioUnitElement output_bus = 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	119 const AudioUnitElement input_bus = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	120 const int iscapture = this->iscapture;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	121 const AudioUnitElement bus =
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	122 ((iscapture) ? input_bus : output_bus);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	123 const AudioUnitScope scope =
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	124 ((iscapture) ? kAudioUnitScope_Output :
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	125 kAudioUnitScope_Input);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	126
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	127 /* stop processing the audio unit */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	128 result = AudioOutputUnitStop(this->hidden->audioUnit);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	129
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	130 /* Remove the input callback */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	131 SDL_memset(&callback, '\0', sizeof(AURenderCallbackStruct));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	132 result = AudioUnitSetProperty(this->hidden->audioUnit,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	133 kAudioUnitProperty_SetRenderCallback,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	134 scope, bus, &callback,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	135 sizeof(callback));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	136
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	137 //CloseComponent(this->hidden->audioUnit);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	138 this->hidden->audioUnitOpened = 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	139 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	140 SDL_free(this->hidden->buffer);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	141 SDL_free(this->hidden);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	142 this->hidden = NULL;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	143 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	144 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	145
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	146
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	147 #define CHECK_RESULT(msg) \
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	148 if (result != noErr) { \
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	149 COREAUDIO_CloseDevice(this); \
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	150 SDL_SetError("CoreAudio error (%s): %d", msg, result); \
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	151 return 0; \
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	152 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	153
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	154 static int
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	155 prepare_audiounit(_THIS, const char *devname, int iscapture,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	156 const AudioStreamBasicDescription * strdesc)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	157 {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	158 OSStatus result = noErr;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	159 AURenderCallbackStruct callback;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	160 AudioComponentDescription desc;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	161 AudioComponent comp = NULL;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	162
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	163 UInt32 enableIO = 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	164 const AudioUnitElement output_bus = 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	165 const AudioUnitElement input_bus = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	166 const AudioUnitElement bus = ((iscapture) ? input_bus : output_bus);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	167 const AudioUnitScope scope = ((iscapture) ? kAudioUnitScope_Output :
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	168 kAudioUnitScope_Input);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	169
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	170 SDL_memset(&desc, '\0', sizeof(AudioComponentDescription));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	171 desc.componentType = kAudioUnitType_Output;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	172 desc.componentSubType = kAudioUnitSubType_RemoteIO;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	173 desc.componentManufacturer = kAudioUnitManufacturer_Apple;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	174
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	175 comp = AudioComponentFindNext(NULL, &desc);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	176 if (comp == NULL) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	177 SDL_SetError("Couldn't find requested CoreAudio component");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	178 return 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	179 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	180
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	181 /* Open & initialize the audio unit */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	182 /*
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	183 AudioComponentInstanceNew only available on iPhone OS 2.0 and Mac OS X 10.6
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	184 We can't use OpenAComponent on iPhone because it is not present
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	185 */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	186 result = AudioComponentInstanceNew(comp, &this->hidden->audioUnit);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	187 CHECK_RESULT("AudioComponentInstanceNew");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	188
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	189 this->hidden->audioUnitOpened = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	190
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	191 // !!! FIXME: this is wrong?
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	192 enableIO = ((iscapture) ? 1 : 0);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	193 result = AudioUnitSetProperty(this->hidden->audioUnit,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	194 kAudioOutputUnitProperty_EnableIO,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	195 kAudioUnitScope_Input, input_bus,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	196 &enableIO, sizeof(enableIO));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	197 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_EnableIO input)");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	198
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	199 // !!! FIXME: this is wrong?
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	200 enableIO = ((iscapture) ? 0 : 1);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	201 result = AudioUnitSetProperty(this->hidden->audioUnit,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	202 kAudioOutputUnitProperty_EnableIO,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	203 kAudioUnitScope_Output, output_bus,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	204 &enableIO, sizeof(enableIO));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	205 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_EnableIO output)");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	206
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	207 /*result = AudioUnitSetProperty(this->hidden->audioUnit,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	208 kAudioOutputUnitProperty_CurrentDevice,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	209 kAudioUnitScope_Global, 0,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	210 &this->hidden->deviceID,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	211 sizeof(AudioDeviceID));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	212
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	213 CHECK_RESULT("AudioUnitSetProperty (kAudioOutputUnitProperty_CurrentDevice)"); */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	214
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	215 /* Set the data format of the audio unit. */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	216 result = AudioUnitSetProperty(this->hidden->audioUnit,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	217 kAudioUnitProperty_StreamFormat,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	218 scope, bus, strdesc, sizeof(*strdesc));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	219 CHECK_RESULT("AudioUnitSetProperty (kAudioUnitProperty_StreamFormat)");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	220
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	221 /* Set the audio callback */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	222 SDL_memset(&callback, '\0', sizeof(AURenderCallbackStruct));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	223 callback.inputProc = ((iscapture) ? inputCallback : outputCallback);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	224 callback.inputProcRefCon = this;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	225 result = AudioUnitSetProperty(this->hidden->audioUnit,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	226 kAudioUnitProperty_SetRenderCallback,
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	227 scope, bus, &callback, sizeof(callback));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	228 CHECK_RESULT
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	229 ("AudioUnitSetProperty (kAudioUnitProperty_SetInputCallback)");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	230
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	231 /* Calculate the final parameters for this audio specification */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	232 SDL_CalculateAudioSpec(&this->spec);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	233
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	234 /* Allocate a sample buffer */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	235 this->hidden->bufferOffset = this->hidden->bufferSize = this->spec.size;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	236 this->hidden->buffer = SDL_malloc(this->hidden->bufferSize);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	237
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	238 result = AudioUnitInitialize(this->hidden->audioUnit);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	239 CHECK_RESULT("AudioUnitInitialize");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	240
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	241 /* Finally, start processing of the audio unit */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	242 result = AudioOutputUnitStart(this->hidden->audioUnit);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	243 CHECK_RESULT("AudioOutputUnitStart");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	244 /* We're running! */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	245 return 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	246 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	247
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	248 static int
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	249 COREAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	250 {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	251 AudioStreamBasicDescription strdesc;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	252 SDL_AudioFormat test_format = SDL_FirstAudioFormat(this->spec.format);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	253 int valid_datatype = 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	254
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	255 /* Initialize all variables that we clean on shutdown */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	256 this->hidden = (struct SDL_PrivateAudioData *)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	257 SDL_malloc((sizeof *this->hidden));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	258 if (this->hidden == NULL) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	259 SDL_OutOfMemory();
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	260 return (0);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	261 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	262 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	263
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	264 /* Setup a AudioStreamBasicDescription with the requested format */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	265 SDL_memset(&strdesc, '\0', sizeof(AudioStreamBasicDescription));
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	266 strdesc.mFormatID = kAudioFormatLinearPCM;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	267 strdesc.mFormatFlags = kLinearPCMFormatFlagIsPacked;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	268 strdesc.mChannelsPerFrame = this->spec.channels;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	269 strdesc.mSampleRate = this->spec.freq;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	270 strdesc.mFramesPerPacket = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	271
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	272 while ((!valid_datatype) && (test_format)) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	273 this->spec.format = test_format;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	274 /* Just a list of valid SDL formats, so people don't pass junk here. */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	275 switch (test_format) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	276 case AUDIO_U8:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	277 case AUDIO_S8:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	278 case AUDIO_U16LSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	279 case AUDIO_S16LSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	280 case AUDIO_U16MSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	281 case AUDIO_S16MSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	282 case AUDIO_S32LSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	283 case AUDIO_S32MSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	284 case AUDIO_F32LSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	285 case AUDIO_F32MSB:
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	286 valid_datatype = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	287 strdesc.mBitsPerChannel = SDL_AUDIO_BITSIZE(this->spec.format);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	288 if (SDL_AUDIO_ISBIGENDIAN(this->spec.format))
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	289 strdesc.mFormatFlags \|= kLinearPCMFormatFlagIsBigEndian;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	290
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	291 if (SDL_AUDIO_ISFLOAT(this->spec.format))
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	292 strdesc.mFormatFlags \|= kLinearPCMFormatFlagIsFloat;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	293 else if (SDL_AUDIO_ISSIGNED(this->spec.format))
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	294 strdesc.mFormatFlags \|= kLinearPCMFormatFlagIsSignedInteger;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	295 break;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	296 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	297 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	298
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	299 if (!valid_datatype) { /* shouldn't happen, but just in case... */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	300 COREAUDIO_CloseDevice(this);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	301 SDL_SetError("Unsupported audio format");
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	302 return 0;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	303 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	304
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	305 strdesc.mBytesPerFrame =
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	306 strdesc.mBitsPerChannel * strdesc.mChannelsPerFrame / 8;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	307 strdesc.mBytesPerPacket =
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	308 strdesc.mBytesPerFrame * strdesc.mFramesPerPacket;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	309
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	310 if (!prepare_audiounit(this, devname, iscapture, &strdesc)) {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	311 COREAUDIO_CloseDevice(this);
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	312 return 0; /* prepare_audiounit() will call SDL_SetError()... */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	313 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	314
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	315 return 1; /* good to go. */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	316 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	317
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	318 static int
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	319 COREAUDIO_Init(SDL_AudioDriverImpl * impl)
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	320 {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	321 /* Set the function pointers */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	322 impl->OpenDevice = COREAUDIO_OpenDevice;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	323 impl->CloseDevice = COREAUDIO_CloseDevice;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	324 impl->Deinitialize = COREAUDIO_Deinitialize;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	325 impl->ProvidesOwnCallbackThread = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	326
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	327 /* added for iPhone */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	328 impl->OnlyHasDefaultInputDevice = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	329 impl->OnlyHasDefaultOutputDevice = 1;
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	330 impl->HasCaptureSupport = 0; /* still needs to be written */
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	331
2942 1e431c2631ee indent Sam Lantinga <slouken@libsdl.org> parents: 2938 diff changeset	332 return 2; /* defitely have an audio device. */
2765 f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	333 }
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	334
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	335 AudioBootStrap COREAUDIOIPHONE_bootstrap = {
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	336 "coreaudio-iphoneos", "SDL CoreAudio (iPhone OS) audio driver",
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	337 COREAUDIO_Init, 0
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	338 };
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	339
f55c87ae336b Final merge of Google Summer of Code 2008 work... Sam Lantinga <slouken@libsdl.org> parents: diff changeset	340 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/audio/iphoneos/SDL_coreaudio_iphone.c @ 3468:789b97008d8a