122 lines
3.5 KiB
C
122 lines
3.5 KiB
C
/*
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opensl_io.c:
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Android OpenSL input/output module header
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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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#ifndef OPENSL_IO
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#define OPENSL_IO
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#include <SLES/OpenSLES.h>
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#include <SLES/OpenSLES_Android.h>
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#include <pthread.h>
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#include <stdlib.h>
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typedef struct threadLock_{
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pthread_mutex_t m;
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pthread_cond_t c;
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unsigned char s;
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} threadLock;
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct opensl_stream {
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// engine interfaces
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SLObjectItf engineObject;
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SLEngineItf engineEngine;
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// output mix interfaces
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SLObjectItf outputMixObject;
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// buffer queue player interfaces
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SLObjectItf bqPlayerObject;
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SLPlayItf bqPlayerPlay;
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SLAndroidSimpleBufferQueueItf bqPlayerBufferQueue;
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SLEffectSendItf bqPlayerEffectSend;
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// recorder interfaces
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SLObjectItf recorderObject;
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SLRecordItf recorderRecord;
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SLAndroidSimpleBufferQueueItf recorderBufferQueue;
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// buffer indexes
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int currentInputIndex;
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int currentOutputIndex;
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// current buffer half (0, 1)
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int currentOutputBuffer;
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int currentInputBuffer;
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// buffers
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short *outputBuffer[2];
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short *inputBuffer[2];
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// size of buffers
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int outBufSamples;
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int inBufSamples;
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// locks
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void* inlock;
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void* outlock;
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double time;
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int inchannels;
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int outchannels;
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int sr;
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} OPENSL_STREAM;
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/*
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Open the audio device with a given sampling rate (sr), input and output channels and IO buffer size
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in frames. Returns a handle to the OpenSL stream
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*/
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OPENSL_STREAM* android_OpenAudioDevice(int sr, int inchannels, int outchannels, int bufferframes);
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/*
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Close the audio device
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*/
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void android_CloseAudioDevice(OPENSL_STREAM *p);
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/*
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Read a buffer from the OpenSL stream *p, of size samples. Returns the number of samples read.
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*/
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int android_AudioIn(OPENSL_STREAM *p, float *buffer,int size);
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/*
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Write a buffer to the OpenSL stream *p, of size samples. Returns the number of samples written.
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*/
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int android_AudioOut(OPENSL_STREAM *p, float *buffer,int size);
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/*
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Get the current IO block time in seconds
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*/
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double android_GetTimestamp(OPENSL_STREAM *p);
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#ifdef __cplusplus
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};
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#endif
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#endif // #ifndef OPENSL_IO
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