364 lines
10 KiB
C
364 lines
10 KiB
C
/*
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opensl_io.c:
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Android OpenSL input/output module
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Copyright (c) 2012, Victor Lazzarini
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of the <organization> nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assert.h>
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#include "rdpsnd_main.h"
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#include "opensl_io.h"
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#define CONV16BIT 32768
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#define CONVMYFLT (1./32768.)
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static void bqPlayerCallback(SLAndroidSimpleBufferQueueItf bq, void *context);
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// creates the OpenSL ES audio engine
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static SLresult openSLCreateEngine(OPENSL_STREAM *p)
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{
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SLresult result;
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// create engine
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result = slCreateEngine(&(p->engineObject), 0, NULL, 0, NULL, NULL);
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DEBUG_SND("engineObject=%p", p->engineObject);
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if(result != SL_RESULT_SUCCESS) goto engine_end;
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// realize the engine
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result = (*p->engineObject)->Realize(p->engineObject, SL_BOOLEAN_FALSE);
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DEBUG_SND("Realize=%d", result);
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if(result != SL_RESULT_SUCCESS) goto engine_end;
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// get the engine interface, which is needed in order to create other objects
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result = (*p->engineObject)->GetInterface(p->engineObject, SL_IID_ENGINE, &(p->engineEngine));
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DEBUG_SND("engineEngine=%p", p->engineEngine);
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if(result != SL_RESULT_SUCCESS) goto engine_end;
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engine_end:
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return result;
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}
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// opens the OpenSL ES device for output
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static SLresult openSLPlayOpen(OPENSL_STREAM *p)
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{
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SLresult result;
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SLuint32 sr = p->sr;
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SLuint32 channels = p->outchannels;
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assert(p->engineObject);
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assert(p->engineEngine);
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if(channels){
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// configure audio source
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SLDataLocator_AndroidSimpleBufferQueue loc_bufq =
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{
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SL_DATALOCATOR_ANDROIDSIMPLEBUFFERQUEUE,
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p->queuesize
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};
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switch(sr){
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case 8000:
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sr = SL_SAMPLINGRATE_8;
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break;
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case 11025:
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sr = SL_SAMPLINGRATE_11_025;
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break;
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case 16000:
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sr = SL_SAMPLINGRATE_16;
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break;
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case 22050:
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sr = SL_SAMPLINGRATE_22_05;
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break;
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case 24000:
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sr = SL_SAMPLINGRATE_24;
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break;
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case 32000:
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sr = SL_SAMPLINGRATE_32;
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break;
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case 44100:
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sr = SL_SAMPLINGRATE_44_1;
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break;
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case 48000:
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sr = SL_SAMPLINGRATE_48;
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break;
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case 64000:
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sr = SL_SAMPLINGRATE_64;
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break;
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case 88200:
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sr = SL_SAMPLINGRATE_88_2;
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break;
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case 96000:
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sr = SL_SAMPLINGRATE_96;
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break;
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case 192000:
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sr = SL_SAMPLINGRATE_192;
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break;
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default:
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return -1;
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}
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const SLInterfaceID ids[] = {SL_IID_VOLUME};
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const SLboolean req[] = {SL_BOOLEAN_FALSE};
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result = (*p->engineEngine)->CreateOutputMix(p->engineEngine, &(p->outputMixObject), 1, ids, req);
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DEBUG_SND("engineEngine=%p", p->engineEngine);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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// realize the output mix
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result = (*p->outputMixObject)->Realize(p->outputMixObject, SL_BOOLEAN_FALSE);
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DEBUG_SND("Realize=%d", result);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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int speakers;
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if(channels > 1)
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speakers = SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT;
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else speakers = SL_SPEAKER_FRONT_CENTER;
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SLDataFormat_PCM format_pcm = {SL_DATAFORMAT_PCM,channels, sr,
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SL_PCMSAMPLEFORMAT_FIXED_16, SL_PCMSAMPLEFORMAT_FIXED_16,
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speakers, SL_BYTEORDER_LITTLEENDIAN};
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SLDataSource audioSrc = {&loc_bufq, &format_pcm};
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// configure audio sink
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SLDataLocator_OutputMix loc_outmix = {SL_DATALOCATOR_OUTPUTMIX, p->outputMixObject};
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SLDataSink audioSnk = {&loc_outmix, NULL};
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// create audio player
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const SLInterfaceID ids1[] = {SL_IID_ANDROIDSIMPLEBUFFERQUEUE, SL_IID_VOLUME};
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const SLboolean req1[] = {SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE};
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result = (*p->engineEngine)->CreateAudioPlayer(p->engineEngine,
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&(p->bqPlayerObject), &audioSrc, &audioSnk, 2, ids1, req1);
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DEBUG_SND("bqPlayerObject=%p", p->bqPlayerObject);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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// realize the player
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result = (*p->bqPlayerObject)->Realize(p->bqPlayerObject, SL_BOOLEAN_FALSE);
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DEBUG_SND("Realize=%d", result);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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// get the play interface
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result = (*p->bqPlayerObject)->GetInterface(p->bqPlayerObject, SL_IID_PLAY, &(p->bqPlayerPlay));
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DEBUG_SND("bqPlayerPlay=%p", p->bqPlayerPlay);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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// get the volume interface
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result = (*p->bqPlayerObject)->GetInterface(p->bqPlayerObject, SL_IID_VOLUME, &(p->bqPlayerVolume));
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DEBUG_SND("bqPlayerVolume=%p", p->bqPlayerVolume);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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// get the buffer queue interface
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result = (*p->bqPlayerObject)->GetInterface(p->bqPlayerObject, SL_IID_ANDROIDSIMPLEBUFFERQUEUE,
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&(p->bqPlayerBufferQueue));
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DEBUG_SND("bqPlayerBufferQueue=%p", p->bqPlayerBufferQueue);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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// register callback on the buffer queue
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result = (*p->bqPlayerBufferQueue)->RegisterCallback(p->bqPlayerBufferQueue, bqPlayerCallback, p);
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DEBUG_SND("bqPlayerCallback=%p", p->bqPlayerCallback);
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assert(!result);
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if(result != SL_RESULT_SUCCESS) goto end_openaudio;
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// set the player's state to playing
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result = (*p->bqPlayerPlay)->SetPlayState(p->bqPlayerPlay, SL_PLAYSTATE_PLAYING);
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DEBUG_SND("SetPlayState=%d", result);
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assert(!result);
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end_openaudio:
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assert(!result);
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return result;
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}
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return SL_RESULT_SUCCESS;
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}
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// close the OpenSL IO and destroy the audio engine
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static void openSLDestroyEngine(OPENSL_STREAM *p){
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// destroy buffer queue audio player object, and invalidate all associated interfaces
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if (p->bqPlayerObject != NULL) {
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(*p->bqPlayerObject)->Destroy(p->bqPlayerObject);
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p->bqPlayerObject = NULL;
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p->bqPlayerVolume = NULL;
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p->bqPlayerPlay = NULL;
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p->bqPlayerBufferQueue = NULL;
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p->bqPlayerEffectSend = NULL;
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}
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// destroy output mix object, and invalidate all associated interfaces
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if (p->outputMixObject != NULL) {
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(*p->outputMixObject)->Destroy(p->outputMixObject);
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p->outputMixObject = NULL;
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}
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// destroy engine object, and invalidate all associated interfaces
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if (p->engineObject != NULL) {
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(*p->engineObject)->Destroy(p->engineObject);
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p->engineObject = NULL;
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p->engineEngine = NULL;
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}
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}
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// open the android audio device for and/or output
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OPENSL_STREAM *android_OpenAudioDevice(int sr, int outchannels, int bufferframes){
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OPENSL_STREAM *p;
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p = (OPENSL_STREAM *) calloc(sizeof(OPENSL_STREAM), 1);
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if (!p)
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return NULL;
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p->queuesize = bufferframes;
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p->outchannels = outchannels;
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p->sr = sr;
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if(openSLCreateEngine(p) != SL_RESULT_SUCCESS)
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{
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android_CloseAudioDevice(p);
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return NULL;
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}
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if(openSLPlayOpen(p) != SL_RESULT_SUCCESS)
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{
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android_CloseAudioDevice(p);
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return NULL;
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}
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p->queue = Queue_New(TRUE, -1, -1);
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if (!p->queue)
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{
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android_CloseAudioDevice(p);
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return NULL;
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}
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return p;
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}
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// close the android audio device
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void android_CloseAudioDevice(OPENSL_STREAM *p){
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if (p == NULL)
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return;
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openSLDestroyEngine(p);
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if (p->queue)
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Queue_Free(p->queue);
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free(p);
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}
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// this callback handler is called every time a buffer finishes playing
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void bqPlayerCallback(SLAndroidSimpleBufferQueueItf bq, void *context)
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{
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OPENSL_STREAM *p = (OPENSL_STREAM *) context;
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assert(p);
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assert(p->queue);
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void *data = Queue_Dequeue(p->queue);
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free(data);
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}
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// puts a buffer of size samples to the device
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int android_AudioOut(OPENSL_STREAM *p, const short *buffer,int size)
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{
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assert(p);
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assert(buffer);
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assert(size > 0);
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/* Assure, that the queue is not full. */
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if (p->queuesize <= Queue_Count(p->queue))
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WaitForSingleObject(p->queue->event, INFINITE);
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void *data = calloc(size, sizeof(short));
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if (!data)
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{
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DEBUG_SND("unable to allocate a buffer");
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return -1;
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}
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memcpy(data, buffer, size * sizeof(short));
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(*p->bqPlayerBufferQueue)->Enqueue(p->bqPlayerBufferQueue,
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data, sizeof(short) * size);
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return size;
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}
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int android_GetOutputMute(OPENSL_STREAM *p) {
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SLboolean mute;
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assert(p);
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assert(p->bqPlayerVolume);
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SLresult rc = (*p->bqPlayerVolume)->GetMute(p->bqPlayerVolume, &mute);
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assert(SL_RESULT_SUCCESS == rc);
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return mute;
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}
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void android_SetOutputMute(OPENSL_STREAM *p, BOOL _mute) {
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SLboolean mute = _mute;
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assert(p);
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assert(p->bqPlayerVolume);
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SLresult rc = (*p->bqPlayerVolume)->SetMute(p->bqPlayerVolume, mute);
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assert(SL_RESULT_SUCCESS == rc);
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}
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int android_GetOutputVolume(OPENSL_STREAM *p){
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SLmillibel level;
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assert(p);
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assert(p->bqPlayerVolume);
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SLresult rc = (*p->bqPlayerVolume)->GetVolumeLevel(p->bqPlayerVolume, &level);
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assert(SL_RESULT_SUCCESS == rc);
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return level;
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}
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int android_GetOutputVolumeMax(OPENSL_STREAM *p){
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SLmillibel level;
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assert(p);
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assert(p->bqPlayerVolume);
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SLresult rc = (*p->bqPlayerVolume)->GetMaxVolumeLevel(p->bqPlayerVolume, &level);
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assert(SL_RESULT_SUCCESS == rc);
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return level;
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}
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void android_SetOutputVolume(OPENSL_STREAM *p, int level){
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SLresult rc = (*p->bqPlayerVolume)->SetVolumeLevel(p->bqPlayerVolume, level);
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assert(SL_RESULT_SUCCESS == rc);
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}
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