diff options
Diffstat (limited to 'portaudio/examples/paex_mono_asio_channel_select.c')
| -rw-r--r-- | portaudio/examples/paex_mono_asio_channel_select.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/portaudio/examples/paex_mono_asio_channel_select.c b/portaudio/examples/paex_mono_asio_channel_select.c deleted file mode 100644 index 4b55d31..0000000 --- a/portaudio/examples/paex_mono_asio_channel_select.c +++ /dev/null @@ -1,167 +0,0 @@ -/** @file paex_mono_asio_channel_select.c - @ingroup examples_src - @brief Play a monophonic sine wave on a specific ASIO channel. - @author Ross Bencina <rossb@audiomulch.com> - @author Phil Burk <philburk@softsynth.com> -*/ -/* - * $Id$ - * - * Authors: - * Ross Bencina <rossb@audiomulch.com> - * Phil Burk <philburk@softsynth.com> - * - * This program uses the PortAudio Portable Audio Library. - * For more information see: http://www.portaudio.com - * 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. - */ - -#include <stdio.h> -#include <math.h> -#include "portaudio.h" -#include "pa_asio.h" - -#define NUM_SECONDS (10) -#define SAMPLE_RATE (44100) -#define AMPLITUDE (0.8) -#define FRAMES_PER_BUFFER (64) -#define OUTPUT_DEVICE Pa_GetDefaultOutputDevice() - -#ifndef M_PI -#define M_PI (3.14159265) -#endif - -#define TABLE_SIZE (200) -typedef struct -{ - float sine[TABLE_SIZE]; - int phase; -} -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; - int finished = 0; - /* avoid unused variable warnings */ - (void) inputBuffer; - (void) timeInfo; - (void) statusFlags; - for( i=0; i<framesPerBuffer; i++ ) - { - *out++ = data->sine[data->phase]; /* left */ - data->phase += 1; - if( data->phase >= TABLE_SIZE ) data->phase -= TABLE_SIZE; - } - return finished; -} - -/*******************************************************************/ -int main(void); -int main(void) -{ - PaStreamParameters outputParameters; - PaAsioStreamInfo asioOutputInfo; - PaStream *stream; - PaError err; - paTestData data; - int outputChannelSelectors[1]; - int i; - printf("PortAudio Test: output MONO sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER); - /* initialise sinusoidal wavetable */ - for( i=0; i<TABLE_SIZE; i++ ) - { - data.sine[i] = (float) (AMPLITUDE * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. )); - } - data.phase = 0; - - err = Pa_Initialize(); - if( err != paNoError ) goto error; - - outputParameters.device = OUTPUT_DEVICE; - outputParameters.channelCount = 1; /* MONO output */ - outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */ - outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency; - - /* Use an ASIO specific structure. WARNING - this is not portable. */ - asioOutputInfo.size = sizeof(PaAsioStreamInfo); - asioOutputInfo.hostApiType = paASIO; - asioOutputInfo.version = 1; - asioOutputInfo.flags = paAsioUseChannelSelectors; - outputChannelSelectors[0] = 1; /* skip channel 0 and use the second (right) ASIO device channel */ - asioOutputInfo.channelSelectors = outputChannelSelectors; - outputParameters.hostApiSpecificStreamInfo = &asioOutputInfo; - - 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 ); fflush(stdout); - 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; -} |