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tools/tracker/packages/portaudio/test/patest_callbackstop.c

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+/** @file patest_callbackstop.c
+	@ingroup test_src
+	@brief Test the paComplete callback result code.
+	@author Ross Bencina <rossb@audiomulch.com>
+*/
+/*
+ * $Id: patest_callbackstop.c 1294 2007-10-24 20:51:22Z bjornroche $
+ *
+ * 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   (5)
+#define NUM_LOOPS     (4)
+#define SAMPLE_RATE   (44100)
+#define FRAMES_PER_BUFFER  (67)
+
+#ifndef M_PI
+#define M_PI  (3.14159265)
+#endif
+
+#define TABLE_SIZE   (200)
+typedef struct
+{
+    float sine[TABLE_SIZE];
+    int phase;
+    unsigned long generatedFramesCount;
+    volatile int callbackReturnedPaComplete;
+    volatile int callbackInvokedAfterReturningPaComplete;
+    char message[100];
+}
+TestData;
+
+/*
+   This routine will be called by the PortAudio stream when audio is needed.
+   It may be 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 TestCallback( const void *input, void *output,
+                            unsigned long frameCount,
+                            const PaStreamCallbackTimeInfo* timeInfo,
+                            PaStreamCallbackFlags statusFlags,
+                            void *userData )
+{
+    TestData *data = (TestData*)userData;
+    float *out = (float*)output;
+    unsigned long i;
+    float x;
+
+    (void) input;       /* Prevent unused variable warnings. */
+    (void) timeInfo;
+    (void) statusFlags;
+
+    
+    if( data->callbackReturnedPaComplete )
+        data->callbackInvokedAfterReturningPaComplete = 1;
+
+    for( i=0; i<frameCount; i++ )
+    {
+        /* generate tone */
+        
+        x = data->sine[ data->phase++ ];
+        if( data->phase >= TABLE_SIZE )
+            data->phase -= TABLE_SIZE;
+        
+        *out++ = x;  /* left */
+        *out++ = x;  /* right */
+    }
+
+    data->generatedFramesCount += frameCount;
+    if( data->generatedFramesCount >= (NUM_SECONDS * SAMPLE_RATE) )
+    {
+        data->callbackReturnedPaComplete = 1;
+        return paComplete;
+    }
+    else
+    {
+        return paContinue;
+    }
+}
+
+/*
+ * This routine is called by portaudio when playback is done.
+ */
+static void StreamFinished( void* userData )
+{
+   TestData *data = (TestData *) userData;
+   printf( "Stream Completed: %s\n", data->message );
+}
+
+
+/*----------------------------------------------------------------------------*/
+int main(void);
+int main(void)
+{
+    PaStreamParameters outputParameters;
+    PaStream *stream;
+    PaError err;
+    TestData data;
+    int i, j;
+
+    
+    printf( "PortAudio Test: output 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) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
+    }
+    
+    err = Pa_Initialize();
+    if( err != paNoError ) goto error;
+
+    outputParameters.device                    = Pa_GetDefaultOutputDevice();
+    outputParameters.channelCount              = 2;               /* stereo output */
+    outputParameters.sampleFormat              = paFloat32;       /* 32 bit floating point output */
+    outputParameters.suggestedLatency          = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
+    outputParameters.hostApiSpecificStreamInfo = NULL;
+
+    err = Pa_OpenStream(
+              &stream,
+              NULL, /* no input */
+              &outputParameters,
+              SAMPLE_RATE,
+              FRAMES_PER_BUFFER,
+              paClipOff,      /* output will be in-range, so no need to clip */
+              TestCallback,
+              &data );
+    if( err != paNoError ) goto error;
+
+    sprintf( data.message, "Loop: XX" );
+    err = Pa_SetStreamFinishedCallback( stream, &StreamFinished );
+    if( err != paNoError ) goto error;
+
+    printf("Repeating test %d times.\n", NUM_LOOPS );
+    
+    for( i=0; i < NUM_LOOPS; ++i )
+    {
+        data.phase = 0;
+        data.generatedFramesCount = 0;
+        data.callbackReturnedPaComplete = 0;
+        data.callbackInvokedAfterReturningPaComplete = 0;
+        sprintf( data.message, "Loop: %d", i );
+
+        err = Pa_StartStream( stream );
+        if( err != paNoError ) goto error;
+
+        printf("Play for %d seconds.\n", NUM_SECONDS );
+
+        /* wait for the callback to complete generating NUM_SECONDS of tone */
+
+        do
+        {
+            Pa_Sleep( 500 );
+        }
+        while( !data.callbackReturnedPaComplete );
+
+        printf( "Callback returned paComplete.\n" );
+        printf( "Waiting for buffers to finish playing...\n" );
+
+        /* wait for stream to become inactive,
+           or for a timeout of approximately NUM_SECONDS
+         */
+     
+        j = 0;
+        while( (err = Pa_IsStreamActive( stream )) == 1 && j < NUM_SECONDS * 2 )
+        {
+            printf(".\n" );
+            Pa_Sleep( 500 );
+            ++j;
+        }
+
+        if( err < 0 )
+        {
+            goto error;
+        }
+        else if( err == 1 )
+        {
+            printf( "TEST FAILED: Timed out waiting for buffers to finish playing.\n" );
+        }
+        else
+        {
+            printf("Buffers finished.\n" );
+        }
+
+        if( data.callbackInvokedAfterReturningPaComplete )
+        {
+            printf( "TEST FAILED: Callback was invoked after returning paComplete.\n" );
+        }
+
+
+        err = Pa_StopStream( stream );
+        if( err != paNoError ) goto error;
+
+        printf( "sleeping for 1 second...\n" );
+        Pa_Sleep( 1000 );
+    }
+
+    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;
+}