Version 2.0

1 files changed, 166 insertions, 0 deletions

diff --git a/tests/call_twostreams.cpp b/tests/call_twostreams.cpp
new file mode 100644
index 0000000..d763cc5
--- /dev/null
+++ b/tests/call_twostreams.cpp
@@ -0,0 +1,166 @@
+/******************************************/
+/*
+  twostreams.cpp
+  by Gary P. Scavone, 2001
+
+  Text 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
+
+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 in(char *buffer, int buffer_size, void *data)
+{
+  extern int chans;
+  MY_TYPE *my_buffer = (MY_TYPE *) buffer;
+  MY_TYPE *my_data = (MY_TYPE *) data;
+  long buffer_bytes = buffer_size * chans * sizeof(MY_TYPE);
+
+  memcpy(my_data, my_buffer, buffer_bytes);
+
+  return 0;
+}
+
+int out(char *buffer, int buffer_size, void *data)
+{
+  extern int chans;
+  MY_TYPE *my_buffer = (MY_TYPE *) buffer;
+  MY_TYPE *my_data = (MY_TYPE *) data;
+  long buffer_bytes = buffer_size * chans * sizeof(MY_TYPE);
+
+  memcpy(my_buffer, my_data, buffer_bytes);
+
+  return 0;
+}
+
+int main(int argc, char *argv[])
+{
+  int device, buffer_size, stream1, stream2, fs;
+  MY_TYPE *data = 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 (RtAudioError &m) {
+    m.printMessage();
+    exit(EXIT_FAILURE);
+  }
+
+  try {
+    stream1 = audio->openStream(0, 0, device, chans,
+                                FORMAT, fs, &buffer_size, 8);
+    stream2 = audio->openStream(device, chans, 0, 0,
+                                FORMAT, fs, &buffer_size, 8);
+  }
+  catch (RtAudioError &m) {
+    m.printMessage();
+    goto cleanup;
+  }
+
+  data = (MY_TYPE *) calloc(chans*buffer_size, sizeof(MY_TYPE));
+  try {
+    audio->setStreamCallback(stream1, &in, (void *)data);
+    audio->setStreamCallback(stream2, &out, (void *)data);
+    audio->startStream(stream1);
+    audio->startStream(stream2);
+  }
+  catch (RtAudioError &m) {
+    m.printMessage();
+    goto cleanup;
+  }
+
+  cout << "\nRunning two streams (quasi-duplex) ... press <enter> to quit.\n";
+  cin.get(input);
+
+  cout << "\nStopping both streams.\n";
+  try {
+    audio->stopStream(stream1);
+    audio->stopStream(stream2);
+  }
+  catch (RtAudioError &m) {
+    m.printMessage();
+    goto cleanup;
+  }
+
+  cout << "\nPress <enter> to restart streams:\n";
+  cin.get(input);
+
+  try {
+    audio->startStream(stream1);
+    audio->startStream(stream2);
+  }
+  catch (RtAudioError &m) {
+    m.printMessage();
+    goto cleanup;
+  }
+
+  cout << "\nRunning two streams (quasi-duplex) ... press <enter> to quit.\n";
+  cin.get(input);
+
+  try {
+    audio->stopStream(stream1);
+    audio->stopStream(stream2);
+  }
+  catch (RtAudioError &m) {
+    m.printMessage();
+  }
+
+ cleanup:
+  audio->closeStream(stream1);
+  audio->closeStream(stream2);
+  delete audio;
+  if (data) free(data);
+
+  return 0;
+}