#ifndef PA_OPENSLES_H #define PA_OPENSLES_H /* * $Id: * PortAudio Portable Real-Time Audio Library * Android OpenSLES-specific extensions * * Copyright (c) 1999-2000 Ross Bencina and Phil Burk * * 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. */ /* * The text above constitutes the entire PortAudio license; however, * the PortAudio community also makes the following non-binding requests: * * Any person wishing to distribute modifications to the Software is * requested to send the modifications to the original developer so that * they can be incorporated into the canonical version. It is also * requested that these non-binding requests be included along with the * license above. */ /** @file @ingroup public_header @brief Android OpenSLES-specific PortAudio API extension header file. */ #include #ifdef __cplusplus extern "C" { #endif /** The android stream type and recording preset as defined in * OpenSLES_AndroidConfiguration.h */ typedef struct PaOpenslesStreamInfo { SLint32 androidPlaybackStreamType; SLint32 androidRecordingPreset; } PaOpenslesStreamInfo; /** Provide PA OpenSLES with native buffer information. This function must be called before Pa_Initialize. * To have optimal latency, this function should be called. Otherwise PA OpenSLES will use non-optimal values * as default. * @param bufferSize the native buffersize as returned by AudioManager's PROPERTY_OUTPUT_FRAMES_PER_BUFFER. It is recommended you set the number of buffers to 1 if API>17 as well, and use the sample rate defined in AudioManager's android.media.property.OUTPUT_SAMPLE_RATE. All three together will enable the AUDIO_OUTPUT_FLAG_FAST flag. */ void PaOpenSLES_SetNativeBufferSize( unsigned long bufferSize ); /** Provide PA OpenSLES with native buffer information. This function must be called before Pa_Initialize. * To have optimal latency and enable the AUDIO_OUTPUT_FLAG_FAST flag, this function should be called. Otherwise PA OpenSLES will use non-optimal values (2) as default. * @param The number of buffers can be reduced to 1 on API >17. Make sure you set the native buffer size when doing this, and use the sample rate defined in AudioManager's android.media.property.OUTPUT_SAMPLE_RATE. */ void PaOpenSLES_SetNumberOfBuffers( unsigned buffers ); #ifdef __cplusplus } #endif #endif