From ae6b5d89ea93b95c2990895077cf5e8f0bba9ad9 Mon Sep 17 00:00:00 2001
From: Guenter  Geiger <ggeiger@users.sourceforge.net>
Date: Mon, 2 Feb 2004 11:28:02 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r1301, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/; revision=1302
---
 pd/portaudio_v18/pa_tests/debug_sine_getchar.c | 140 +++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 pd/portaudio_v18/pa_tests/debug_sine_getchar.c

(limited to 'pd/portaudio_v18/pa_tests/debug_sine_getchar.c')

diff --git a/pd/portaudio_v18/pa_tests/debug_sine_getchar.c b/pd/portaudio_v18/pa_tests/debug_sine_getchar.c
new file mode 100644
index 00000000..54c0cba5
--- /dev/null
+++ b/pd/portaudio_v18/pa_tests/debug_sine_getchar.c
@@ -0,0 +1,140 @@
+/*
+ * $Id: debug_sine_getchar.c,v 1.1.2.2 2003/04/10 23:09:40 philburk Exp $
+ *
+ * Play a sine wave using the Portable Audio api until ENTER hit.
+ *
+ * Authors:
+ *    Ross Bencina <rossb@audiomulch.com>
+ *    Phil Burk <philburk@softsynth.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 SAMPLE_RATE   (48000)
+#define AMPLITUDE     (0.3)
+#define FRAMES_PER_BUFFER  (64)
+#define OUTPUT_DEVICE Pa_GetDefaultOutputDeviceID()
+//#define OUTPUT_DEVICE (2)
+
+#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(   void *inputBuffer, void *outputBuffer,
+                             unsigned long framesPerBuffer,
+                             PaTimestamp outTime, void *userData )
+{
+    paTestData *data = (paTestData*)userData;
+    float *out = (float*)outputBuffer;
+    unsigned long i;
+    int finished = 0;
+    (void) outTime; /* Prevent unused variable warnings. */
+    (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 finished;
+}
+
+/*******************************************************************/
+int main(void);
+int main(void)
+{
+    PortAudioStream *stream;
+    PaError err;
+    paTestData data;
+    int i;
+    printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d, devID = %d\n",
+    	SAMPLE_RATE, FRAMES_PER_BUFFER, OUTPUT_DEVICE);
+    /* initialise sinusoidal wavetable */
+    for( i=0; i<TABLE_SIZE; i++ )
+    {
+        data.sine[i] = (float) (AMPLITUDE * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
+    }
+    data.left_phase = data.right_phase = 0;
+    err = Pa_Initialize();
+    if( err != paNoError ) goto error;
+    err = Pa_OpenStream(
+              &stream,
+              paNoDevice,/* default input device */
+              0,              /* no input */
+              paFloat32,  /* 32 bit floating point input */
+              NULL,
+              OUTPUT_DEVICE,
+              2,          /* stereo output */
+              paFloat32,      /* 32 bit floating point output */
+              NULL,
+              SAMPLE_RATE,
+              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;
+    printf("Press ENTER to stop.\n" ); fflush(stdout);
+    getchar();
+
+    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 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;
+}
-- 
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