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Diffstat (limited to 'portaudio/test/patest_multi_sine.c')
| -rw-r--r-- | portaudio/test/patest_multi_sine.c | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/portaudio/test/patest_multi_sine.c b/portaudio/test/patest_multi_sine.c deleted file mode 100644 index ec9ed8c..0000000 --- a/portaudio/test/patest_multi_sine.c +++ /dev/null @@ -1,205 +0,0 @@ -/** @file patest_multi_sine.c - @ingroup test_src - @brief Play a different sine wave on each channel. - @author Phil Burk http://www.softsynth.com -*/ -/* - * $Id$ - * - * 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" - -#define SAMPLE_RATE (44100) -#define FRAMES_PER_BUFFER (128) -#define FREQ_INCR (300.0 / SAMPLE_RATE) -#define MAX_CHANNELS (64) - -#ifndef M_PI -#define M_PI (3.14159265) -#endif - -typedef struct -{ - short interleaved; /* Nonzero for interleaved / zero for non-interleaved. */ - int numChannels; /* Actually used. */ - double phases[MAX_CHANNELS]; /* Each channel gets its' own frequency. */ -} -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) -{ - int frameIndex, channelIndex; - float** outputs = (float**)outputBuffer; - paTestData* data = (paTestData*)userData; - - (void) inputBuffer; /* Prevent unused arg warning. */ - if (data->interleaved) - { - float *out = (float*)outputBuffer; /* interleaved version */ - for( frameIndex=0; frameIndex<(int)framesPerBuffer; frameIndex++ ) - { - for( channelIndex=0; channelIndex<data->numChannels; channelIndex++ ) - { - /* Output sine wave on every channel. */ - *out++ = (float) sin(data->phases[channelIndex]); - - /* Play each channel at a higher frequency. */ - data->phases[channelIndex] += FREQ_INCR * (4 + channelIndex); - if( data->phases[channelIndex] >= (2.0 * M_PI) ) data->phases[channelIndex] -= (2.0 * M_PI); - } - } - } - else - { - for( frameIndex=0; frameIndex<(int)framesPerBuffer; frameIndex++ ) - { - for( channelIndex=0; channelIndex<data->numChannels; channelIndex++ ) - { - /* Output sine wave on every channel. */ - outputs[channelIndex][frameIndex] = (float) sin(data->phases[channelIndex]); - - /* Play each channel at a higher frequency. */ - data->phases[channelIndex] += FREQ_INCR * (4 + channelIndex); - if( data->phases[channelIndex] >= (2.0 * M_PI) ) data->phases[channelIndex] -= (2.0 * M_PI); - } - } - } - return 0; -} - -/*******************************************************************/ -int test(short interleaved) -{ - PaStream* stream; - PaStreamParameters outputParameters; - PaError err; - const PaDeviceInfo* pdi; - paTestData data; - short n; - - outputParameters.device = Pa_GetDefaultOutputDevice(); /* Default output device, max channels. */ - if (outputParameters.device == paNoDevice) { - fprintf(stderr,"Error: No default output device.\n"); - return paInvalidDevice; - } - pdi = Pa_GetDeviceInfo(outputParameters.device); - outputParameters.channelCount = pdi->maxOutputChannels; - if (outputParameters.channelCount > MAX_CHANNELS) - outputParameters.channelCount = MAX_CHANNELS; - outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */ - outputParameters.suggestedLatency = pdi->defaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - - data.interleaved = interleaved; - data.numChannels = outputParameters.channelCount; - for (n = 0; n < data.numChannels; n++) - data.phases[n] = 0.0; /* Phases wrap and maybe don't need initialisation. */ - printf("%d ", data.numChannels); - if (interleaved) - printf("interleaved "); - else - { - printf(" non-interleaved "); - outputParameters.sampleFormat |= paNonInterleaved; - } - printf("channels.\n"); - - err = Pa_OpenStream(&stream, - NULL, /* No input. */ - &outputParameters, - SAMPLE_RATE, /* Sample rate. */ - FRAMES_PER_BUFFER, /* Frames per buffer. */ - paClipOff, /* Samples never out of range, no clipping. */ - patestCallback, - &data); - if (err == paNoError) - { - err = Pa_StartStream(stream); - if (err == paNoError) - { - printf("Hit ENTER to stop this test.\n"); - getchar(); - err = Pa_StopStream(stream); - } - Pa_CloseStream( stream ); - } - return err; -} - - -/*******************************************************************/ -int main(void) -{ - PaError err; - - printf("PortAudio Test: output sine wave on each channel.\n" ); - - err = Pa_Initialize(); - if (err != paNoError) - goto done; - - err = test(1); /* 1 means interleaved. */ - if (err != paNoError) - goto done; - - err = test(0); /* 0 means not interleaved. */ - if (err != paNoError) - goto done; - - printf("Test finished.\n"); -done: - if (err) - { - 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)); - } - Pa_Terminate(); - return 0; -} |