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Diffstat (limited to 'portaudio/examples/paex_wmme_surround.c')
| -rw-r--r-- | portaudio/examples/paex_wmme_surround.c | 210 |
1 files changed, 0 insertions, 210 deletions
diff --git a/portaudio/examples/paex_wmme_surround.c b/portaudio/examples/paex_wmme_surround.c deleted file mode 100644 index 55fc255..0000000 --- a/portaudio/examples/paex_wmme_surround.c +++ /dev/null @@ -1,210 +0,0 @@ -/** @file paex_wmme_surround.c - @ingroup examples_src - @brief Use WMME-specific channelMask to request 5.1 surround sound output. - @author Ross Bencina <rossb@audiomulch.com> -*/ -/* - * $Id: $ - * Portable Audio I/O Library - * Windows MME surround sound output test - * - * Copyright (c) 2007 Ross Bencina - * - * 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. - */ - -#include <stdio.h> -#include <math.h> - -#include <windows.h> /* required when using pa_win_wmme.h */ -#include <mmsystem.h> /* required when using pa_win_wmme.h */ - -#include "portaudio.h" -#include "pa_win_wmme.h" - -#define NUM_SECONDS (12) -#define SAMPLE_RATE (44100) -#define FRAMES_PER_BUFFER (64) - -#ifndef M_PI -#define M_PI (3.14159265) -#endif - -#define TABLE_SIZE (100) - -#define CHANNEL_COUNT (6) - - - -typedef struct -{ - float sine[TABLE_SIZE]; - int phase; - int currentChannel; - int cycleCount; -} -paTestData; - -/* This routine will be called by the PortAudio engine when audio is needed. -** It may called at interrupt level on some machines so don't do anything -** that could mess up the system like calling malloc() or free(). -*/ -static int patestCallback( const void *inputBuffer, void *outputBuffer, - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo* timeInfo, - PaStreamCallbackFlags statusFlags, - void *userData ) -{ - paTestData *data = (paTestData*)userData; - float *out = (float*)outputBuffer; - unsigned long i,j; - - (void) timeInfo; /* Prevent unused variable warnings. */ - (void) statusFlags; - (void) inputBuffer; - - for( i=0; i<framesPerBuffer; i++ ) - { - for( j = 0; j < CHANNEL_COUNT; ++j ){ - if( j == data->currentChannel && data->cycleCount < 4410 ){ - *out++ = data->sine[data->phase]; - data->phase += 1 + j; // play each channel at a different pitch so they can be distinguished - if( data->phase >= TABLE_SIZE ){ - data->phase -= TABLE_SIZE; - } - }else{ - *out++ = 0; - } - } - - data->cycleCount++; - if( data->cycleCount > 44100 ){ - data->cycleCount = 0; - - ++data->currentChannel; - if( data->currentChannel >= CHANNEL_COUNT ) - data->currentChannel -= CHANNEL_COUNT; - } - } - - return paContinue; -} - -/*******************************************************************/ -int main(int argc, char* argv[]) -{ - PaStreamParameters outputParameters; - PaWinMmeStreamInfo wmmeStreamInfo; - PaStream *stream; - PaError err; - paTestData data; - int i; - int deviceIndex; - - printf("PortAudio Test: output a sine blip on each channel. SR = %d, BufSize = %d, Chans = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER, CHANNEL_COUNT); - - err = Pa_Initialize(); - if( err != paNoError ) goto error; - - deviceIndex = Pa_GetHostApiInfo( Pa_HostApiTypeIdToHostApiIndex( paMME ) )->defaultOutputDevice; - if( argc == 2 ){ - sscanf( argv[1], "%d", &deviceIndex ); - } - - printf( "using device id %d (%s)\n", deviceIndex, Pa_GetDeviceInfo(deviceIndex)->name ); - - /* initialise sinusoidal wavetable */ - for( i=0; i<TABLE_SIZE; i++ ) - { - data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ); - } - - data.phase = 0; - data.currentChannel = 0; - data.cycleCount = 0; - - outputParameters.device = deviceIndex; - outputParameters.channelCount = CHANNEL_COUNT; - outputParameters.sampleFormat = paFloat32; /* 32 bit floating point processing */ - outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - - /* it's not strictly necessary to provide a channelMask for surround sound - output. But if you want to be sure which channel mask PortAudio will use - then you should supply one */ - wmmeStreamInfo.size = sizeof(PaWinMmeStreamInfo); - wmmeStreamInfo.hostApiType = paMME; - wmmeStreamInfo.version = 1; - wmmeStreamInfo.flags = paWinMmeUseChannelMask; - wmmeStreamInfo.channelMask = PAWIN_SPEAKER_5POINT1; /* request 5.1 output format */ - outputParameters.hostApiSpecificStreamInfo = &wmmeStreamInfo; - - - if( Pa_IsFormatSupported( 0, &outputParameters, SAMPLE_RATE ) == paFormatIsSupported ){ - printf( "Pa_IsFormatSupported reports device will support %d channels.\n", CHANNEL_COUNT ); - }else{ - printf( "Pa_IsFormatSupported reports device will not support %d channels.\n", CHANNEL_COUNT ); - } - - err = Pa_OpenStream( - &stream, - NULL, /* no input */ - &outputParameters, - SAMPLE_RATE, - FRAMES_PER_BUFFER, - paClipOff, /* we won't output out of range samples so don't bother clipping them */ - patestCallback, - &data ); - if( err != paNoError ) goto error; - - err = Pa_StartStream( stream ); - if( err != paNoError ) goto error; - - printf("Play for %d seconds.\n", NUM_SECONDS ); - Pa_Sleep( NUM_SECONDS * 1000 ); - - err = Pa_StopStream( stream ); - if( err != paNoError ) goto error; - - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto error; - - Pa_Terminate(); - printf("Test finished.\n"); - - return err; -error: - Pa_Terminate(); - fprintf( stderr, "An error occurred while using the portaudio stream\n" ); - fprintf( stderr, "Error number: %d\n", err ); - fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) ); - return err; -} |