/**************************************************************************/ /* audio_driver_opensl.cpp */ /**************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /**************************************************************************/ /* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ /* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ /* */ /* 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 { mix = mutex.try_lock(); } if (mix) { audio_server_process(buffer_size, mixdown_buffer); } else { int32_t *src_buff = mixdown_buffer; for (unsigned int i = 0; i < buffer_size * 2; i++) { src_buff[i] = 0; } } if (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 (unsigned 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 = static_cast<AudioDriverOpenSL *>(pContext); ad->_buffer_callback(queueItf); } Error AudioDriverOpenSL::init() { SLresult res; SLEngineOption EngineOption[] = { { (SLuint32)SL_ENGINEOPTION_THREADSAFE, (SLuint32)SL_BOOLEAN_TRUE } }; res = slCreateEngine(&sl, 1, EngineOption, 0, nullptr, nullptr); ERR_FAIL_COND_V_MSG(res != SL_RESULT_SUCCESS, ERR_INVALID_PARAMETER, "Could not initialize OpenSL."); res = (*sl)->Realize(sl, SL_BOOLEAN_FALSE); ERR_FAIL_COND_V_MSG(res != SL_RESULT_SUCCESS, ERR_INVALID_PARAMETER, "Could not realize OpenSL."); return OK; } void AudioDriverOpenSL::start() { 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 }; /* 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 = nullptr; /* 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; } void AudioDriverOpenSL::_record_buffer_callback(SLAndroidSimpleBufferQueueItf queueItf) { for (int i = 0; i < rec_buffer.size(); i++) { int32_t sample = rec_buffer[i] << 16; input_buffer_write(sample); input_buffer_write(sample); // call twice to convert to Stereo } SLresult res = (*recordBufferQueueItf)->Enqueue(recordBufferQueueItf, rec_buffer.ptrw(), rec_buffer.size() * sizeof(int16_t)); ERR_FAIL_COND(res != SL_RESULT_SUCCESS); } void AudioDriverOpenSL::_record_buffer_callbacks(SLAndroidSimpleBufferQueueItf queueItf, void *pContext) { AudioDriverOpenSL *ad = static_cast<AudioDriverOpenSL *>(pContext); ad->_record_buffer_callback(queueItf); } Error AudioDriverOpenSL::init_input_device() { SLDataLocator_IODevice loc_dev = { SL_DATALOCATOR_IODEVICE, SL_IODEVICE_AUDIOINPUT, SL_DEFAULTDEVICEID_AUDIOINPUT, nullptr }; SLDataSource recSource = { &loc_dev, nullptr }; SLDataLocator_AndroidSimpleBufferQueue loc_bq = { SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE, 2 }; SLDataFormat_PCM format_pcm = { SL_DATAFORMAT_PCM, 1, SL_SAMPLINGRATE_44_1, SL_PCMSAMPLEFORMAT_FIXED_16, SL_PCMSAMPLEFORMAT_FIXED_16, SL_SPEAKER_FRONT_CENTER, SL_BYTEORDER_LITTLEENDIAN }; SLDataSink recSnk = { &loc_bq, &format_pcm }; const SLInterfaceID ids[2] = { SL_IID_ANDROIDSIMPLEBUFFERQUEUE, SL_IID_ANDROIDCONFIGURATION }; const SLboolean req[2] = { SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE }; SLresult res = (*EngineItf)->CreateAudioRecorder(EngineItf, &recorder, &recSource, &recSnk, 2, ids, req); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); res = (*recorder)->Realize(recorder, SL_BOOLEAN_FALSE); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); res = (*recorder)->GetInterface(recorder, SL_IID_RECORD, (void *)&recordItf); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); res = (*recorder)->GetInterface(recorder, SL_IID_ANDROIDSIMPLEBUFFERQUEUE, (void *)&recordBufferQueueItf); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); res = (*recordBufferQueueItf)->RegisterCallback(recordBufferQueueItf, _record_buffer_callbacks, this); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); SLuint32 state; res = (*recordItf)->GetRecordState(recordItf, &state); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); if (state != SL_RECORDSTATE_STOPPED) { res = (*recordItf)->SetRecordState(recordItf, SL_RECORDSTATE_STOPPED); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); res = (*recordBufferQueueItf)->Clear(recordBufferQueueItf); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); } const int rec_buffer_frames = 2048; rec_buffer.resize(rec_buffer_frames); input_buffer_init(rec_buffer_frames); res = (*recordBufferQueueItf)->Enqueue(recordBufferQueueItf, rec_buffer.ptrw(), rec_buffer.size() * sizeof(int16_t)); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); res = (*recordItf)->SetRecordState(recordItf, SL_RECORDSTATE_RECORDING); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); return OK; } Error AudioDriverOpenSL::input_start() { if (OS::get_singleton()->request_permission("RECORD_AUDIO")) { return init_input_device(); } WARN_PRINT("Unable to start audio capture - No RECORD_AUDIO permission"); return ERR_UNAUTHORIZED; } Error AudioDriverOpenSL::input_stop() { SLuint32 state; SLresult res = (*recordItf)->GetRecordState(recordItf, &state); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); if (state != SL_RECORDSTATE_STOPPED) { res = (*recordItf)->SetRecordState(recordItf, SL_RECORDSTATE_STOPPED); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); res = (*recordBufferQueueItf)->Clear(recordBufferQueueItf); ERR_FAIL_COND_V(res != SL_RESULT_SUCCESS, ERR_CANT_OPEN); } return OK; } int AudioDriverOpenSL::get_mix_rate() const { return 44100; // hardcoded for Android, as selected by SL_SAMPLINGRATE_44_1 } AudioDriver::SpeakerMode AudioDriverOpenSL::get_speaker_mode() const { return SPEAKER_MODE_STEREO; } void AudioDriverOpenSL::lock() { if (active) { mutex.lock(); } } void AudioDriverOpenSL::unlock() { if (active) { 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() { }