From a3d2ee35944db4dd0a3a342bb7f2df69f229f45d Mon Sep 17 00:00:00 2001
From: Gary Scavone <gary@music.mcgill.ca>
Date: Wed, 9 Oct 2013 23:44:33 +0200
Subject: Version 2.1

---
 tests/call_playtwo.cpp | 178 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 178 insertions(+)
 create mode 100644 tests/call_playtwo.cpp

(limited to 'tests/call_playtwo.cpp')

diff --git a/tests/call_playtwo.cpp b/tests/call_playtwo.cpp
new file mode 100644
index 0000000..4364262
--- /dev/null
+++ b/tests/call_playtwo.cpp
@@ -0,0 +1,178 @@
+/******************************************/
+/*
+  call_playtwo.cpp
+  by Gary P. Scavone, 2002.
+
+  Test executable using two streams with
+  callbacks.
+*/
+/******************************************/
+
+#include "RtAudio.h"
+#include <iostream.h>
+
+/*
+typedef signed long  MY_TYPE;
+#define FORMAT RtAudio::RTAUDIO_SINT24
+#define SCALE  2147483647.0
+
+typedef char  MY_TYPE;
+#define FORMAT RtAudio::RTAUDIO_SINT8
+#define SCALE  127.0
+
+typedef signed short  MY_TYPE;
+#define FORMAT RtAudio::RTAUDIO_SINT16
+#define SCALE  32767.0
+
+typedef signed long  MY_TYPE;
+#define FORMAT RtAudio::RTAUDIO_SINT32
+#define SCALE  2147483647.0
+
+typedef float  MY_TYPE;
+#define FORMAT RtAudio::RTAUDIO_FLOAT32
+#define SCALE  1.0
+*/
+
+typedef double  MY_TYPE;
+#define FORMAT RtAudio::RTAUDIO_FLOAT64
+#define SCALE  1.0
+#define BASE_RATE1 0.005
+#define BASE_RATE2 0.004
+
+void usage(void) {
+  /* Error function in case of incorrect command-line
+     argument specifications
+  */
+  cout << "\nuseage: call_twostreams N fs\n";
+  cout << "    where N = number of channels,\n";
+  cout << "    and fs = the sample rate.\n\n";
+  exit(0);
+}
+
+int chans;
+
+int saw1(char *buffer, int buffer_size, void *data)
+{
+  int i, j;
+  extern int chans;
+  MY_TYPE *my_buffer = (MY_TYPE *) buffer;
+  double *my_data = (double *) data;
+
+  for (i=0; i<buffer_size; i++) {
+    for (j=0; j<chans; j++) {
+      *my_buffer++ = (MY_TYPE) (my_data[j] * SCALE);
+      my_data[j] += BASE_RATE1 * (j+1+(j*0.1));
+      if (my_data[j] >= 1.0) my_data[j] -= 2.0;
+    }
+  }
+
+  return 0;
+}
+
+int saw2(char *buffer, int buffer_size, void *data)
+{
+  int i, j;
+  extern int chans;
+  MY_TYPE *my_buffer = (MY_TYPE *) buffer;
+  double *my_data = (double *) data;
+
+  for (i=0; i<buffer_size; i++) {
+    for (j=0; j<chans; j++) {
+      *my_buffer++ = (MY_TYPE) (my_data[j] * SCALE);
+      my_data[j] += BASE_RATE2 * (j+1+(j*0.1));
+      if (my_data[j] >= 1.0) my_data[j] -= 2.0;
+    }
+  }
+
+  return 0;
+}
+
+int main(int argc, char *argv[])
+{
+  int device, buffer_size, stream1 = 0, stream2 = 0, fs;
+  double *data1 = 0;
+  double *data2 = 0;
+  RtAudio *audio;
+  char input;
+
+  // minimal command-line checking
+  if (argc != 3) usage();
+
+  chans = (int) atoi(argv[1]);
+  fs = (int) atoi(argv[2]);
+
+  // Open the realtime output device
+  buffer_size = 512;
+  device = 0; // default device
+  try {
+    audio = new RtAudio();
+  }
+  catch (RtError &) {
+    exit(EXIT_FAILURE);
+  }
+
+  try {
+    stream1 = audio->openStream(device, chans, 0, 0,
+                                FORMAT, fs, &buffer_size, 8);
+    stream2 = audio->openStream(device, chans, 0, 0,
+                                FORMAT, fs, &buffer_size, 8);
+  }
+  catch (RtError &) {
+    goto cleanup;
+  }
+
+  data1 = (double *) calloc(chans, sizeof(double));
+  data2 = (double *) calloc(chans, sizeof(double));
+
+  try {
+    audio->setStreamCallback(stream1, &saw1, (void *)data1);
+    audio->setStreamCallback(stream2, &saw2, (void *)data2);
+    audio->startStream(stream1);
+    audio->startStream(stream2);
+  }
+  catch (RtError &) {
+    goto cleanup;
+  }
+
+  cout << "\nRunning two streams ... press <enter> to quit.\n";
+  cin.get(input);
+
+  cout << "\nStopping both streams.\n";
+  try {
+    audio->stopStream(stream1);
+    audio->stopStream(stream2);
+  }
+  catch (RtError &) {
+    goto cleanup;
+  }
+
+  cout << "\nPress <enter> to restart streams:\n";
+  cin.get(input);
+
+  try {
+    audio->startStream(stream1);
+    audio->startStream(stream2);
+  }
+  catch (RtError &) {
+    goto cleanup;
+  }
+
+  cout << "\nRunning two streams (quasi-duplex) ... press <enter> to quit.\n";
+  cin.get(input);
+
+  try {
+    audio->stopStream(stream1);
+    audio->stopStream(stream2);
+  }
+  catch (RtError &) {
+  }
+
+ cleanup:
+  audio->closeStream(stream1);
+  audio->closeStream(stream2);
+  delete audio;
+  if (data1) free(data1);
+  if (data2) free(data2);
+
+  return 0;
+}
-- 
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