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Diffstat (limited to 'portaudio/test/patest_sine8.c')
| -rw-r--r-- | portaudio/test/patest_sine8.c | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/portaudio/test/patest_sine8.c b/portaudio/test/patest_sine8.c deleted file mode 100644 index 82de69d..0000000 --- a/portaudio/test/patest_sine8.c +++ /dev/null @@ -1,216 +0,0 @@ -/** @file patest_sine8.c - @ingroup test_src - @brief Test 8 bit data: play a sine wave for several seconds. - @author Ross Bencina <rossb@audiomulch.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 NUM_SECONDS (8) -#define SAMPLE_RATE (44100) -#define TABLE_SIZE (200) -#define TEST_UNSIGNED (0) - -#if TEST_UNSIGNED -#define TEST_FORMAT paUInt8 -typedef unsigned char sample_t; -#define SILENCE ((sample_t)0x80) -#else -#define TEST_FORMAT paInt8 -typedef char sample_t; -#define SILENCE ((sample_t)0x00) -#endif - -#ifndef M_PI -#define M_PI (3.14159265) -#endif - -typedef struct -{ - sample_t sine[TABLE_SIZE]; - int left_phase; - int right_phase; - unsigned int framesToGo; -} -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; - sample_t *out = (sample_t*)outputBuffer; - int i; - int framesToCalc; - int finished = 0; - (void) inputBuffer; /* Prevent unused variable warnings. */ - - if( data->framesToGo < framesPerBuffer ) - { - framesToCalc = data->framesToGo; - data->framesToGo = 0; - finished = 1; - } - else - { - framesToCalc = framesPerBuffer; - data->framesToGo -= framesPerBuffer; - } - - for( i=0; i<framesToCalc; i++ ) - { - *out++ = data->sine[data->left_phase]; /* left */ - *out++ = data->sine[data->right_phase]; /* right */ - data->left_phase += 1; - if( data->left_phase >= TABLE_SIZE ) data->left_phase -= TABLE_SIZE; - data->right_phase += 3; /* higher pitch so we can distinguish left and right. */ - if( data->right_phase >= TABLE_SIZE ) data->right_phase -= TABLE_SIZE; - } - /* zero remainder of final buffer */ - for( ; i<(int)framesPerBuffer; i++ ) - { - *out++ = SILENCE; /* left */ - *out++ = SILENCE; /* right */ - } - return finished; -} - -/*******************************************************************/ -int main(void); -int main(void) -{ - PaStreamParameters outputParameters; - PaStream* stream; - PaError err; - paTestData data; - PaTime streamOpened; - int i, totalSamps; - -#if TEST_UNSIGNED - printf("PortAudio Test: output UNsigned 8 bit sine wave.\n"); -#else - printf("PortAudio Test: output signed 8 bit sine wave.\n"); -#endif - /* initialise sinusoidal wavetable */ - for( i=0; i<TABLE_SIZE; i++ ) - { - data.sine[i] = SILENCE + (char) (127.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. )); - } - data.left_phase = data.right_phase = 0; - data.framesToGo = totalSamps = NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */ - - err = Pa_Initialize(); - if( err != paNoError ) - goto error; - - outputParameters.device = Pa_GetDefaultOutputDevice(); /* Default output device. */ - if (outputParameters.device == paNoDevice) { - fprintf(stderr,"Error: No default output device.\n"); - goto error; - } - outputParameters.channelCount = 2; /* Stereo output. */ - outputParameters.sampleFormat = TEST_FORMAT; - outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency; - outputParameters.hostApiSpecificStreamInfo = NULL; - err = Pa_OpenStream( &stream, - NULL, /* No input. */ - &outputParameters, - SAMPLE_RATE, - 256, /* 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; - - streamOpened = Pa_GetStreamTime( stream ); /* Time in seconds when stream was opened (approx). */ - - err = Pa_StartStream( stream ); - if( err != paNoError ) - goto error; - - /* Watch until sound is halfway finished. */ - /* (Was ( Pa_StreamTime( stream ) < (totalSamps/2) ) in V18. */ - while( (Pa_GetStreamTime( stream ) - streamOpened) < (PaTime)NUM_SECONDS / 2.0 ) - Pa_Sleep(10); - - /* Stop sound. */ - printf("Stopping Stream.\n"); - err = Pa_StopStream( stream ); - if( err != paNoError ) - goto error; - - printf("Pause for 2 seconds.\n"); - Pa_Sleep( 2000 ); - - printf("Starting again.\n"); - err = Pa_StartStream( stream ); - if( err != paNoError ) - goto error; - - printf("Waiting for sound to finish.\n"); - - while( ( err = Pa_IsStreamActive( stream ) ) == 1 ) - Pa_Sleep(100); - if( err < 0 ) - 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; -} |