forked from dolphin-emu/dolphin
140 lines
4.3 KiB
C++
140 lines
4.3 KiB
C++
// Copyright 2013 Dolphin Emulator Project
|
|
// Licensed under GPLv2+
|
|
// Refer to the license.txt file included.
|
|
|
|
#ifdef ANDROID
|
|
#include <assert.h>
|
|
|
|
#include <SLES/OpenSLES.h>
|
|
#include <SLES/OpenSLES_Android.h>
|
|
|
|
#include "AudioCommon/OpenSLESStream.h"
|
|
#include "Common/CommonTypes.h"
|
|
|
|
// engine interfaces
|
|
static SLObjectItf engineObject;
|
|
static SLEngineItf engineEngine;
|
|
static SLObjectItf outputMixObject;
|
|
|
|
// buffer queue player interfaces
|
|
static SLObjectItf bqPlayerObject = nullptr;
|
|
static SLPlayItf bqPlayerPlay;
|
|
static SLAndroidSimpleBufferQueueItf bqPlayerBufferQueue;
|
|
static SLMuteSoloItf bqPlayerMuteSolo;
|
|
static SLVolumeItf bqPlayerVolume;
|
|
static CMixer *g_mixer;
|
|
#define BUFFER_SIZE 512
|
|
#define BUFFER_SIZE_IN_SAMPLES (BUFFER_SIZE / 2)
|
|
|
|
// Double buffering.
|
|
static short buffer[2][BUFFER_SIZE];
|
|
static int curBuffer = 0;
|
|
|
|
static void bqPlayerCallback(SLAndroidSimpleBufferQueueItf bq, void *context)
|
|
{
|
|
assert(bq == bqPlayerBufferQueue);
|
|
assert(nullptr == context);
|
|
|
|
short *nextBuffer = buffer[curBuffer];
|
|
int nextSize = sizeof(buffer[0]);
|
|
|
|
SLresult result = (*bqPlayerBufferQueue)->Enqueue(bqPlayerBufferQueue, nextBuffer, nextSize);
|
|
|
|
// Comment from sample code:
|
|
// the most likely other result is SL_RESULT_BUFFER_INSUFFICIENT,
|
|
// which for this code example would indicate a programming error
|
|
_assert_msg_(AUDIO, SL_RESULT_SUCCESS == result, "Couldn't enqueue audio stream.");
|
|
|
|
curBuffer ^= 1; // Switch buffer
|
|
// Render to the fresh buffer
|
|
g_mixer->Mix(reinterpret_cast<short *>(buffer[curBuffer]), BUFFER_SIZE_IN_SAMPLES);
|
|
}
|
|
|
|
bool OpenSLESStream::Start()
|
|
{
|
|
SLresult result;
|
|
// create engine
|
|
result = slCreateEngine(&engineObject, 0, nullptr, 0, nullptr, nullptr);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*engineObject)->Realize(engineObject, SL_BOOLEAN_FALSE);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*engineObject)->GetInterface(engineObject, SL_IID_ENGINE, &engineEngine);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*engineEngine)->CreateOutputMix(engineEngine, &outputMixObject, 0, 0, 0);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*outputMixObject)->Realize(outputMixObject, SL_BOOLEAN_FALSE);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
|
|
SLDataLocator_AndroidSimpleBufferQueue loc_bufq = {SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 2};
|
|
SLDataFormat_PCM format_pcm = {
|
|
SL_DATAFORMAT_PCM,
|
|
2,
|
|
m_mixer->GetSampleRate() * 1000,
|
|
SL_PCMSAMPLEFORMAT_FIXED_16,
|
|
SL_PCMSAMPLEFORMAT_FIXED_16,
|
|
SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT,
|
|
SL_BYTEORDER_LITTLEENDIAN
|
|
};
|
|
|
|
SLDataSource audioSrc = {&loc_bufq, &format_pcm};
|
|
|
|
// configure audio sink
|
|
SLDataLocator_OutputMix loc_outmix = {SL_DATALOCATOR_OUTPUTMIX, outputMixObject};
|
|
SLDataSink audioSnk = {&loc_outmix, nullptr};
|
|
|
|
// create audio player
|
|
const SLInterfaceID ids[2] = {SL_IID_BUFFERQUEUE, SL_IID_VOLUME};
|
|
const SLboolean req[2] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE};
|
|
result = (*engineEngine)->CreateAudioPlayer(engineEngine, &bqPlayerObject, &audioSrc, &audioSnk, 2, ids, req);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
|
|
result = (*bqPlayerObject)->Realize(bqPlayerObject, SL_BOOLEAN_FALSE);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*bqPlayerObject)->GetInterface(bqPlayerObject, SL_IID_PLAY, &bqPlayerPlay);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*bqPlayerObject)->GetInterface(bqPlayerObject, SL_IID_BUFFERQUEUE,
|
|
&bqPlayerBufferQueue);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*bqPlayerBufferQueue)->RegisterCallback(bqPlayerBufferQueue, bqPlayerCallback, nullptr);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
result = (*bqPlayerPlay)->SetPlayState(bqPlayerPlay, SL_PLAYSTATE_PLAYING);
|
|
assert(SL_RESULT_SUCCESS == result);
|
|
|
|
// Render and enqueue a first buffer.
|
|
curBuffer ^= 1;
|
|
g_mixer = m_mixer.get();
|
|
|
|
result = (*bqPlayerBufferQueue)->Enqueue(bqPlayerBufferQueue, buffer[0], sizeof(buffer[0]));
|
|
if (SL_RESULT_SUCCESS != result)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
void OpenSLESStream::Stop()
|
|
{
|
|
if (bqPlayerObject != nullptr)
|
|
{
|
|
(*bqPlayerObject)->Destroy(bqPlayerObject);
|
|
bqPlayerObject = nullptr;
|
|
bqPlayerPlay = nullptr;
|
|
bqPlayerBufferQueue = nullptr;
|
|
bqPlayerMuteSolo = nullptr;
|
|
bqPlayerVolume = nullptr;
|
|
}
|
|
|
|
if (outputMixObject != nullptr)
|
|
{
|
|
(*outputMixObject)->Destroy(outputMixObject);
|
|
outputMixObject = nullptr;
|
|
}
|
|
|
|
if (engineObject != nullptr)
|
|
{
|
|
(*engineObject)->Destroy(engineObject);
|
|
engineObject = nullptr;
|
|
engineEngine = nullptr;
|
|
}
|
|
}
|
|
#endif
|