add initial structure

1 files changed, 182 insertions, 0 deletions

diff --git a/portaudio/test/patest_sine_srate.c b/portaudio/test/patest_sine_srate.c
new file mode 100644
index 0000000..d4ce81b
--- /dev/null
+++ b/portaudio/test/patest_sine_srate.c
@@ -0,0 +1,182 @@
+/*
+ * $Id: patest_sine.c 1097 2006-08-26 08:27:53Z rossb $
+ *
+ * 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.
+ */
+
+/** @file patest_sine_srate_mac.c
+    @ingroup test_src
+    @brief Plays sine waves at 44100 and 48000,
+          and forces the hardware to change if this is a mac.
+          Designed for use with CoreAudio.
+    @author Bjorn Roche <bjorn@xowave.com>
+   @author Ross Bencina <rossb@audiomulch.com>
+   @author Phil Burk <philburk@softsynth.com>
+*/
+
+#include <stdio.h>
+#include <math.h>
+#include "portaudio.h"
+
+#ifdef __APPLE__
+#include "pa_mac_core.h"
+#endif
+
+#define NUM_SECONDS   (5)
+#define SAMPLE_RATE1   (44100)
+#define SAMPLE_RATE2   (48000)
+#define FRAMES_PER_BUFFER  (64)
+
+#ifndef M_PI
+#define M_PI  (3.14159265)
+#endif
+
+#define TABLE_SIZE   (200)
+typedef struct
+{
+    float sine[TABLE_SIZE];
+    int left_phase;
+    int right_phase;
+}
+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;
+    float *out = (float*)outputBuffer;
+    unsigned long i;
+
+    (void) timeInfo; /* Prevent unused variable warnings. */
+    (void) statusFlags;
+    (void) inputBuffer;
+
+    for( i=0; i<framesPerBuffer; 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;
+    }
+
+    return paContinue;
+}
+
+/*******************************************************************/
+int main(void);
+int main(void)
+{
+    PaStreamParameters outputParameters;
+    PaStream *stream;
+    PaError err;
+    paTestData data;
+#ifdef __APPLE__
+    PaMacCoreStreamInfo macInfo;
+#endif
+    int i;
+
+    /* initialise sinusoidal wavetable */
+    for( i=0; i<TABLE_SIZE; i++ )
+    {
+        data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
+    }
+    data.left_phase = data.right_phase = 0;
+
+    err = Pa_Initialize();
+    if( err != paNoError ) goto error;
+
+    for( i=0; i<2; ++i ) {
+        const float sr = i ? SAMPLE_RATE2 : SAMPLE_RATE1;
+        printf("PortAudio Test: output sine wave. SR = %g, BufSize = %d\n", sr, FRAMES_PER_BUFFER);
+        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 = paFloat32; /* 32 bit floating point output */
+        outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
+        /** setup host specific info */
+#ifdef __APPLE__
+        PaMacCore_SetupStreamInfo( &macInfo, paMacCorePro );
+        outputParameters.hostApiSpecificStreamInfo = &macInfo;
+#else
+        printf( "Hardware SR changing not being tested on this platform.\n" );
+        outputParameters.hostApiSpecificStreamInfo = NULL;
+#endif
+        err = Pa_OpenStream(
+                &stream,
+                NULL, /* no input */
+                &outputParameters,
+                sr,
+                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;
+
+        err = Pa_StartStream( stream );
+        if( err != paNoError ) goto error;
+
+        printf("Play for %d seconds.\n", NUM_SECONDS );
+        Pa_Sleep( NUM_SECONDS * 1000 );
+
+        err = Pa_StopStream( stream );
+        if( err != paNoError ) 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;
+}