mirror of
https://github.com/libretro/scummvm.git
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106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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// Disable symbol overrides so that we can use system headers.
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#define FORBIDDEN_SYMBOL_ALLOW_ALL
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#include "osys_main.h"
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void OSystem_IPHONE::AQBufferCallback(void *in, AudioQueueRef inQ, AudioQueueBufferRef outQB) {
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//printf("AQBufferCallback()\n");
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if (s_AudioQueue.frameCount > 0 && s_soundCallback != NULL) {
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outQB->mAudioDataByteSize = 4 * s_AudioQueue.frameCount;
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s_soundCallback(s_soundParam, (byte *)outQB->mAudioData, outQB->mAudioDataByteSize);
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AudioQueueEnqueueBuffer(inQ, outQB, 0, NULL);
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} else {
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AudioQueueStop(s_AudioQueue.queue, false);
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}
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}
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void OSystem_IPHONE::mixCallback(void *sys, byte *samples, int len) {
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OSystem_IPHONE *this_ = (OSystem_IPHONE *)sys;
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assert(this_);
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if (this_->_mixer) {
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this_->_mixer->mixCallback(samples, len);
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}
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}
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void OSystem_IPHONE::setupMixer() {
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_mixer = new Audio::MixerImpl(this, AUDIO_SAMPLE_RATE);
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s_soundCallback = mixCallback;
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s_soundParam = this;
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startSoundsystem();
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}
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void OSystem_IPHONE::startSoundsystem() {
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s_AudioQueue.dataFormat.mSampleRate = AUDIO_SAMPLE_RATE;
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s_AudioQueue.dataFormat.mFormatID = kAudioFormatLinearPCM;
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s_AudioQueue.dataFormat.mFormatFlags = kLinearPCMFormatFlagIsSignedInteger | kAudioFormatFlagIsPacked;
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s_AudioQueue.dataFormat.mBytesPerPacket = 4;
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s_AudioQueue.dataFormat.mFramesPerPacket = 1;
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s_AudioQueue.dataFormat.mBytesPerFrame = 4;
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s_AudioQueue.dataFormat.mChannelsPerFrame = 2;
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s_AudioQueue.dataFormat.mBitsPerChannel = 16;
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s_AudioQueue.frameCount = WAVE_BUFFER_SIZE;
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if (AudioQueueNewOutput(&s_AudioQueue.dataFormat, AQBufferCallback, &s_AudioQueue, 0, kCFRunLoopCommonModes, 0, &s_AudioQueue.queue)) {
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printf("Couldn't set the AudioQueue callback!\n");
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_mixer->setReady(false);
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return;
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}
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uint32 bufferBytes = s_AudioQueue.frameCount * s_AudioQueue.dataFormat.mBytesPerFrame;
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for (int i = 0; i < AUDIO_BUFFERS; i++) {
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if (AudioQueueAllocateBuffer(s_AudioQueue.queue, bufferBytes, &s_AudioQueue.buffers[i])) {
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printf("Error allocating AudioQueue buffer!\n");
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_mixer->setReady(false);
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return;
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}
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AQBufferCallback(&s_AudioQueue, s_AudioQueue.queue, s_AudioQueue.buffers[i]);
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}
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AudioQueueSetParameter(s_AudioQueue.queue, kAudioQueueParam_Volume, 1.0);
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if (AudioQueueStart(s_AudioQueue.queue, NULL)) {
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printf("Error starting the AudioQueue!\n");
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_mixer->setReady(false);
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return;
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}
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_mixer->setReady(true);
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}
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void OSystem_IPHONE::stopSoundsystem() {
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AudioQueueStop(s_AudioQueue.queue, true);
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for (int i = 0; i < AUDIO_BUFFERS; i++) {
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AudioQueueFreeBuffer(s_AudioQueue.queue, s_AudioQueue.buffers[i]);
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}
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AudioQueueDispose(s_AudioQueue.queue, true);
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_mixer->setReady(false);
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}
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