1 files changed, 149 insertions, 0 deletions
diff --git a/media/libcubeb/tests/test_tone.cpp b/media/libcubeb/tests/test_tone.cpp
new file mode 100644
index 000000000..3c6e0ec54
--- /dev/null
+++ b/media/libcubeb/tests/test_tone.cpp
@@ -0,0 +1,149 @@
+/*
+ * 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 600
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <assert.h>
+#include <limits.h>
+
+#include "cubeb/cubeb.h"
+#include "common.h"
+#ifdef CUBEB_GECKO_BUILD
+#include "TestHarness.h"
+#endif
+
+#define SAMPLE_FREQUENCY 48000
+#if (defined(_WIN32) || defined(__WIN32__))
+#define STREAM_FORMAT CUBEB_SAMPLE_FLOAT32LE
+#else
+#define STREAM_FORMAT CUBEB_SAMPLE_S16LE
+#endif
+
+/* store the phase of the generated waveform */
+struct cb_user_data {
+  long position;
+};
+
+long data_cb(cubeb_stream *stream, void *user, const void* /*inputbuffer*/, void *outputbuffer, long nframes)
+{
+  struct cb_user_data *u = (struct cb_user_data *)user;
+#if (defined(_WIN32) || defined(__WIN32__))
+  float *b = (float *)outputbuffer;
+#else
+  short *b = (short *)outputbuffer;
+#endif
+  float t1, t2;
+  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 */
+    t1 = sin(2*M_PI*(i + u->position)*350/SAMPLE_FREQUENCY);
+    t2 = sin(2*M_PI*(i + u->position)*440/SAMPLE_FREQUENCY);
+#if (defined(_WIN32) || defined(__WIN32__))
+    b[i]  = 0.5 * t1;
+    b[i] += 0.5 * t2;
+#else
+    b[i]  = (SHRT_MAX / 2) * t1;
+    b[i] += (SHRT_MAX / 2) * t2;
+#endif
+    /* European dial tone */
+    /*
+    t1 = sin(2*M_PI*(i + u->position)*425/SAMPLE_FREQUENCY);
+#if (defined(_WIN32) || defined(__WIN32__))
+    b[i] = t1;
+#else
+    b[i]  = SHRT_MAX * t1;
+#endif
+    */
+  }
+  /* 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*/[])
+{
+#ifdef CUBEB_GECKO_BUILD
+  ScopedXPCOM xpcom("test_tone");
+#endif
+
+  cubeb *ctx;
+  cubeb_stream *stream;
+  cubeb_stream_params params;
+  struct cb_user_data *user_data;
+  int r;
+
+  r = cubeb_init(&ctx, "Cubeb tone example");
+  if (r != CUBEB_OK) {
+    fprintf(stderr, "Error initializing cubeb library\n");
+    return r;
+  }
+
+  params.format = STREAM_FORMAT;
+  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;
+
+  r = cubeb_stream_init(ctx, &stream, "Cubeb tone (mono)", NULL, NULL, NULL, &params,
+                        4096, data_cb, state_cb, user_data);
+  if (r != CUBEB_OK) {
+    fprintf(stderr, "Error initializing cubeb stream\n");
+    return r;
+  }
+
+  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;
+}