diff -r 000000000000 -r 6474c204b198 media/libcubeb/tests/test_tone.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/libcubeb/tests/test_tone.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,117 @@
+/*
+ * Copyright © 2011 Mozilla Foundation
+ *
+ * This program is made available under an ISC-style license.  See the
+ * accompanying file LICENSE for details.
+ */
+
+/* libcubeb api/function test. Plays a simple tone. */
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#define _XOPEN_SOURCE 500
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <assert.h>
+
+#include "cubeb/cubeb.h"
+#include "common.h"
+
+#define SAMPLE_FREQUENCY 48000
+
+/* store the phase of the generated waveform */
+struct cb_user_data {
+  long position;
+};
+
+long data_cb(cubeb_stream *stream, void *user, void *buffer, long nframes)
+{
+  struct cb_user_data *u = (struct cb_user_data *)user;
+  short *b = (short *)buffer;
+  int i;
+
+  if (stream == NULL || u == NULL)
+    return CUBEB_ERROR;
+
+  /* generate our test tone on the fly */
+  for (i = 0; i < nframes; i++) {
+    /* North American dial tone */
+    b[i]  = 16000*sin(2*M_PI*(i + u->position)*350/SAMPLE_FREQUENCY);
+    b[i] += 16000*sin(2*M_PI*(i + u->position)*440/SAMPLE_FREQUENCY);
+    /* European dial tone */
+    /*b[i]  = 30000*sin(2*M_PI*(i + u->position)*425/SAMPLE_FREQUENCY);*/
+  }
+  /* remember our phase to avoid clicking on buffer transitions */
+  /* we'll still click if position overflows */
+  u->position += nframes;
+
+  return nframes;
+}
+
+void state_cb(cubeb_stream *stream, void *user, cubeb_state state)
+{
+  struct cb_user_data *u = (struct cb_user_data *)user;
+
+  if (stream == NULL || u == NULL)
+    return;
+
+  switch (state) {
+    case CUBEB_STATE_STARTED:
+      printf("stream started\n"); break;
+    case CUBEB_STATE_STOPPED:
+      printf("stream stopped\n"); break;
+    case CUBEB_STATE_DRAINED:
+      printf("stream drained\n"); break;
+    default:
+      printf("unknown stream state %d\n", state);
+  }
+
+  return;
+}
+
+int main(int argc, char *argv[])
+{
+  cubeb *ctx;
+  cubeb_stream *stream;
+  cubeb_stream_params params;
+  struct cb_user_data *user_data;
+  int ret;
+
+  ret = cubeb_init(&ctx, "Cubeb tone example");
+  if (ret != CUBEB_OK) {
+    fprintf(stderr, "Error initializing cubeb library\n");
+    return ret;
+  }
+
+  params.format = CUBEB_SAMPLE_S16NE;
+  params.rate = SAMPLE_FREQUENCY;
+  params.channels = 1;
+
+  user_data = (struct cb_user_data *) malloc(sizeof(*user_data));
+  if (user_data == NULL) {
+    fprintf(stderr, "Error allocating user data\n");
+    return CUBEB_ERROR;
+  }
+  user_data->position = 0;
+
+  ret = cubeb_stream_init(ctx, &stream, "Cubeb tone (mono)", params,
+                          250, data_cb, state_cb, user_data);
+  if (ret != CUBEB_OK) {
+    fprintf(stderr, "Error initializing cubeb stream\n");
+    return ret;
+  }
+
+  cubeb_stream_start(stream);
+  delay(500);
+  cubeb_stream_stop(stream);
+
+  cubeb_stream_destroy(stream);
+  cubeb_destroy(ctx);
+
+  assert(user_data->position);
+
+  free(user_data);
+
+  return CUBEB_OK;
+}