summaryrefslogtreecommitdiff
path: root/portaudio/test/patest_prime.c
diff options
context:
space:
mode:
Diffstat (limited to 'portaudio/test/patest_prime.c')
-rw-r--r--portaudio/test/patest_prime.c234
1 files changed, 0 insertions, 234 deletions
diff --git a/portaudio/test/patest_prime.c b/portaudio/test/patest_prime.c
deleted file mode 100644
index e943310..0000000
--- a/portaudio/test/patest_prime.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/** @file patest_prime.c
- @ingroup test_src
- @brief Test stream priming mode.
- @author Ross Bencina http://www.audiomulch.com/~rossb
-*/
-
-/*
- * $Id$
- *
- * 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"
-#include "pa_util.h"
-
-#define NUM_BEEPS (3)
-#define SAMPLE_RATE (44100)
-#define SAMPLE_PERIOD (1.0/44100.0)
-#define FRAMES_PER_BUFFER (256)
-#define BEEP_DURATION (400)
-#define IDLE_DURATION (SAMPLE_RATE*2) /* 2 seconds */
-#define SLEEP_MSEC (50)
-
-#define STATE_BKG_IDLE (0)
-#define STATE_BKG_BEEPING (1)
-
-typedef struct
-{
- float leftPhase;
- float rightPhase;
- int state;
- int beepCountdown;
- int idleCountdown;
-}
-paTestData;
-
-static void InitializeTestData( paTestData *testData )
-{
- testData->leftPhase = 0;
- testData->rightPhase = 0;
- testData->state = STATE_BKG_BEEPING;
- testData->beepCountdown = BEEP_DURATION;
- testData->idleCountdown = IDLE_DURATION;
-}
-
-/* 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 )
-{
- /* Cast data passed through stream to our structure. */
- paTestData *data = (paTestData*)userData;
- float *out = (float*)outputBuffer;
- unsigned int i;
- int result = paContinue;
-
- /* suppress unused parameter warnings */
- (void) inputBuffer;
- (void) timeInfo;
- (void) statusFlags;
-
- for( i=0; i<framesPerBuffer; i++ )
- {
- switch( data->state )
- {
- case STATE_BKG_IDLE:
- *out++ = 0.0; /* left */
- *out++ = 0.0; /* right */
- --data->idleCountdown;
-
- if( data->idleCountdown <= 0 ) result = paComplete;
- break;
-
- case STATE_BKG_BEEPING:
- if( data->beepCountdown <= 0 )
- {
- data->state = STATE_BKG_IDLE;
- *out++ = 0.0; /* left */
- *out++ = 0.0; /* right */
- }
- else
- {
- /* Play sawtooth wave. */
- *out++ = data->leftPhase; /* left */
- *out++ = data->rightPhase; /* right */
- /* Generate simple sawtooth phaser that ranges between -1.0 and 1.0. */
- data->leftPhase += 0.01f;
- /* When signal reaches top, drop back down. */
- if( data->leftPhase >= 1.0f ) data->leftPhase -= 2.0f;
- /* higher pitch so we can distinguish left and right. */
- data->rightPhase += 0.03f;
- if( data->rightPhase >= 1.0f ) data->rightPhase -= 2.0f;
- }
- --data->beepCountdown;
- break;
- }
- }
-
- return result;
-}
-
-/*******************************************************************/
-static PaError DoTest( int flags )
-{
- PaStream *stream;
- PaError err = paNoError;
- paTestData data;
- PaStreamParameters outputParameters;
-
- InitializeTestData( &data );
-
- outputParameters.device = Pa_GetDefaultOutputDevice();
- if (outputParameters.device == paNoDevice) {
- fprintf(stderr,"Error: No default output device.\n");
- goto error;
- }
- outputParameters.channelCount = 2;
- outputParameters.hostApiSpecificStreamInfo = NULL;
- outputParameters.sampleFormat = paFloat32;
- outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;
-
- /* Open an audio I/O stream. */
- err = Pa_OpenStream(
- &stream,
- NULL, /* no input */
- &outputParameters,
- SAMPLE_RATE,
- FRAMES_PER_BUFFER, /* frames per buffer */
- paClipOff | flags, /* 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("hear \"BEEP\"\n" );
- fflush(stdout);
-
- while( ( err = Pa_IsStreamActive( stream ) ) == 1 ) Pa_Sleep(SLEEP_MSEC);
- if( err < 0 ) goto error;
-
- err = Pa_StopStream( stream );
- if( err != paNoError ) goto error;
-
- err = Pa_CloseStream( stream );
- if( err != paNoError ) goto error;
-
- return err;
-error:
- return err;
-}
-
-/*******************************************************************/
-int main(void);
-int main(void)
-{
- PaError err = paNoError;
- int i;
-
- /* Initialize library before making any other calls. */
- err = Pa_Initialize();
- if( err != paNoError ) goto error;
-
- printf("PortAudio Test: Testing stream playback with no priming.\n");
- printf("PortAudio Test: you should see BEEP before you hear it.\n");
- printf("BEEP %d times.\n", NUM_BEEPS );
-
- for( i=0; i< NUM_BEEPS; ++i )
- {
- err = DoTest( 0 );
- if( err != paNoError )
- goto error;
- }
-
- printf("PortAudio Test: Testing stream playback with priming.\n");
- printf("PortAudio Test: you should see BEEP around the same time you hear it.\n");
- for( i=0; i< NUM_BEEPS; ++i )
- {
- err = DoTest( paPrimeOutputBuffersUsingStreamCallback );
- if( err != paNoError )
- goto error;
- }
-
- printf("Test finished.\n");
-
- Pa_Terminate();
- 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;
-}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-01 01:08:22 +0000