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/*************************************************************************/
/* audio_driver_opensl.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "audio_driver_opensl.h"
#include <string.h>
#define MAX_NUMBER_INTERFACES 3
#define MAX_NUMBER_OUTPUT_DEVICES 6
/* Structure for passing information to callback function */
void AudioDriverOpenSL::_buffer_callback(
SLAndroidSimpleBufferQueueItf queueItf) {
bool mix = true;
if (pause) {
mix = false;
} else if (mutex) {
mix = mutex->try_lock() == OK;
}
if (mix) {
audio_server_process(buffer_size, mixdown_buffer);
} else {
int32_t *src_buff = mixdown_buffer;
for (int i = 0; i < buffer_size * 2; i++) {
src_buff[i] = 0;
}
}
if (mutex && mix)
mutex->unlock();
const int32_t *src_buff = mixdown_buffer;
int16_t *ptr = (int16_t *)buffers[last_free];
last_free = (last_free + 1) % BUFFER_COUNT;
for (int i = 0; i < buffer_size * 2; i++) {
ptr[i] = src_buff[i] >> 16;
}
(*queueItf)->Enqueue(queueItf, ptr, 4 * buffer_size);
}
void AudioDriverOpenSL::_buffer_callbacks(
SLAndroidSimpleBufferQueueItf queueItf,
void *pContext) {
AudioDriverOpenSL *ad = (AudioDriverOpenSL *)pContext;
ad->_buffer_callback(queueItf);
}
AudioDriverOpenSL *AudioDriverOpenSL::s_ad = NULL;
const char *AudioDriverOpenSL::get_name() const {
return "Android";
}
Error AudioDriverOpenSL::init() {
SLresult res;
SLEngineOption EngineOption[] = {
{ (SLuint32)SL_ENGINEOPTION_THREADSAFE, (SLuint32)SL_BOOLEAN_TRUE }
};
res = slCreateEngine(&sl, 1, EngineOption, 0, NULL, NULL);
if (res != SL_RESULT_SUCCESS) {
ERR_EXPLAIN("Could not Initialize OpenSL");
ERR_FAIL_V(ERR_INVALID_PARAMETER);
}
res = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
if (res != SL_RESULT_SUCCESS) {
ERR_EXPLAIN("Could not Realize OpenSL");
ERR_FAIL_V(ERR_INVALID_PARAMETER);
}
return OK;
}
void AudioDriverOpenSL::start() {
mutex = Mutex::create();
active = false;
SLresult res;
buffer_size = 1024;
for (int i = 0; i < BUFFER_COUNT; i++) {
buffers[i] = memnew_arr(int16_t, buffer_size * 2);
memset(buffers[i], 0, buffer_size * 4);
}
mixdown_buffer = memnew_arr(int32_t, buffer_size * 2);
/* Callback context for the buffer queue callback function */
/* Get the SL Engine Interface which is implicit */
res = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void *)&EngineItf);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
{
const SLInterfaceID ids[1] = { SL_IID_ENVIRONMENTALREVERB };
const SLboolean req[1] = { SL_BOOLEAN_FALSE };
res = (*EngineItf)->CreateOutputMix(EngineItf, &OutputMix, 0, ids, req);
}
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
// Realizing the Output Mix object in synchronous mode.
res = (*OutputMix)->Realize(OutputMix, SL_BOOLEAN_FALSE);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
SLDataLocator_AndroidSimpleBufferQueue loc_bufq = { SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, BUFFER_COUNT };
//bufferQueue.locatorType = SL_DATALOCATOR_BUFFERQUEUE;
//bufferQueue.numBuffers = BUFFER_COUNT; /* Four buffers in our buffer queue */
/* Setup the format of the content in the buffer queue */
pcm.formatType = SL_DATAFORMAT_PCM;
pcm.numChannels = 2;
pcm.samplesPerSec = SL_SAMPLINGRATE_44_1;
pcm.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
pcm.containerSize = SL_PCMSAMPLEFORMAT_FIXED_16;
pcm.channelMask = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
#ifdef BIG_ENDIAN_ENABLED
pcm.endianness = SL_BYTEORDER_BIGENDIAN;
#else
pcm.endianness = SL_BYTEORDER_LITTLEENDIAN;
#endif
audioSource.pFormat = (void *)&pcm;
audioSource.pLocator = (void *)&loc_bufq;
/* Setup the data sink structure */
locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
locator_outputmix.outputMix = OutputMix;
audioSink.pLocator = (void *)&locator_outputmix;
audioSink.pFormat = NULL;
/* Initialize the context for Buffer queue callbacks */
//cntxt.pDataBase = (void*)&pcmData;
//cntxt.pData = cntxt.pDataBase;
//cntxt.size = sizeof(pcmData);
/* Create the music player */
{
const SLInterfaceID ids[2] = { SL_IID_BUFFERQUEUE, SL_IID_EFFECTSEND };
const SLboolean req[2] = { SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE };
res = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 1, ids, req);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
}
/* Realizing the player in synchronous mode. */
res = (*player)->Realize(player, SL_BOOLEAN_FALSE);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
/* Get seek and play interfaces */
res = (*player)->GetInterface(player, SL_IID_PLAY, (void *)&playItf);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
res = (*player)->GetInterface(player, SL_IID_BUFFERQUEUE,
(void *)&bufferQueueItf);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
/* Setup to receive buffer queue event callbacks */
res = (*bufferQueueItf)->RegisterCallback(bufferQueueItf, _buffer_callbacks, this);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
last_free = 0;
//fill up buffers
for (int i = 0; i < BUFFER_COUNT; i++) {
/* Enqueue a few buffers to get the ball rolling */
res = (*bufferQueueItf)->Enqueue(bufferQueueItf, buffers[i], 4 * buffer_size); /* Size given in */
}
res = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING);
ERR_FAIL_COND(res != SL_RESULT_SUCCESS);
active = true;
}
int AudioDriverOpenSL::get_mix_rate() const {
return 44100;
}
AudioDriver::SpeakerMode AudioDriverOpenSL::get_speaker_mode() const {
return SPEAKER_MODE_STEREO;
}
void AudioDriverOpenSL::lock() {
if (active && mutex)
mutex->lock();
}
void AudioDriverOpenSL::unlock() {
if (active && mutex)
mutex->unlock();
}
void AudioDriverOpenSL::finish() {
(*sl)->Destroy(sl);
}
void AudioDriverOpenSL::set_pause(bool p_pause) {
pause = p_pause;
if (active) {
if (pause) {
(*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PAUSED);
} else {
(*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING);
}
}
}
AudioDriverOpenSL::AudioDriverOpenSL() {
s_ad = this;
mutex = Mutex::create(); //NULL;
pause = false;
active = false;
}
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