diff options
Diffstat (limited to 'pd/portaudio_v18/pa_tests/patest_sine8.c')
| -rw-r--r-- | pd/portaudio_v18/pa_tests/patest_sine8.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/pd/portaudio_v18/pa_tests/patest_sine8.c b/pd/portaudio_v18/pa_tests/patest_sine8.c deleted file mode 100644 index 36cf863a..00000000 --- a/pd/portaudio_v18/pa_tests/patest_sine8.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * $Id: patest_sine8.c,v 1.1.1.1 2002/01/22 00:52:38 phil Exp $ - * patest_sine8.c - * Play a sine wave using the Portable Audio api for several seconds. - * Test 8 bit data. - * - * Author: Ross Bencina <rossb@audiomulch.com> - * - * This program uses the PortAudio Portable Audio Library. - * For more information see: http://www.audiomulch.com/portaudio/ - * 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. - * - * 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. - * - * 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. - * - */ -#include <stdio.h> -#include <math.h> -#include "portaudio.h" -#define NUM_SECONDS (8) -#define SAMPLE_RATE (44100) -#define TEST_UNSIGNED (1) -#if TEST_UNSIGNED -#define TEST_FORMAT paUInt8 -#else -#define TEST_FORMAT paInt8 -#endif -#ifndef M_PI -#define M_PI (3.14159265) -#endif -#define TABLE_SIZE (200) -typedef struct -{ -#if TEST_UNSIGNED - unsigned char sine[TABLE_SIZE]; -#else - char sine[TABLE_SIZE]; -#endif - 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( void *inputBuffer, void *outputBuffer, - unsigned long framesPerBuffer, - PaTimestamp outTime, void *userData ) -{ - paTestData *data = (paTestData*)userData; - char *out = (char*)outputBuffer; - int i; - int framesToCalc; - int finished = 0; - (void) outTime; /* Prevent unused variable warnings. */ - (void) inputBuffer; - - 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++ ) - { -#if TEST_UNSIGNED - *out++ = (unsigned char) 0x80; /* left */ - *out++ = (unsigned char) 0x80; /* right */ -#else - *out++ = 0; /* left */ - *out++ = 0; /* right */ -#endif - - } - return finished; -} -/*******************************************************************/ -int main(void); -int main(void) -{ - PortAudioStream *stream; - PaError err; - paTestData data; - int i; - int 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] = (char) (127.0 * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. )); -#if TEST_UNSIGNED - data.sine[i] += (unsigned char) 0x80; -#endif - - } - 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; - err = Pa_OpenStream( - &stream, - paNoDevice,/* default input device */ - 0, /* no input */ - TEST_FORMAT, - NULL, - Pa_GetDefaultOutputDeviceID(), /* default output device */ - 2, /* stereo output */ - TEST_FORMAT, - NULL, - SAMPLE_RATE, - 256, /* frames per buffer */ - 0, /* number of buffers, if zero then use default minimum */ - 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; - /* Watch until sound is halfway finished. */ - while( Pa_StreamTime( stream ) < (totalSamps/2) ) Pa_Sleep(10); - /* Stop sound until ENTER hit. */ - err = Pa_StopStream( stream ); - if( err != paNoError ) goto error; - printf("Pause for 2 seconds.\n"); - Pa_Sleep( 2000 ); - - err = Pa_StartStream( stream ); - if( err != paNoError ) goto error; - printf("Waiting for sound to finish.\n"); - while( Pa_StreamActive( stream ) ) Pa_Sleep(10); - err = Pa_CloseStream( stream ); - if( err != paNoError ) goto error; - Pa_Terminate(); - printf("Test finished.\n"); - return err; -error: - Pa_Terminate(); - fprintf( stderr, "An error occured while using the portaudio stream\n" ); - fprintf( stderr, "Error number: %d\n", err ); - fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) ); - return err; -} |