1 files changed, 121 insertions, 0 deletions
diff --git a/third_party/rust/cubeb-sys/libcubeb/test/test_tone.cpp b/third_party/rust/cubeb-sys/libcubeb/test/test_tone.cpp
new file mode 100644
index 0000000000..70a71885e6
--- /dev/null
+++ b/third_party/rust/cubeb-sys/libcubeb/test/test_tone.cpp
@@ -0,0 +1,121 @@
+/*
+ * 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. */
+#include "gtest/gtest.h"
+#if !defined(_XOPEN_SOURCE)
+#define _XOPEN_SOURCE 600
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <memory>
+#include <limits.h>
+#include "cubeb/cubeb.h"
+#include <atomic>
+
+//#define ENABLE_NORMAL_LOG
+//#define ENABLE_VERBOSE_LOG
+#include "common.h"
+
+
+#define SAMPLE_FREQUENCY 48000
+#define STREAM_FORMAT CUBEB_SAMPLE_S16LE
+
+/* store the phase of the generated waveform */
+struct cb_user_data {
+  std::atomic<long> position;
+};
+
+long data_cb_tone(cubeb_stream *stream, void *user, const void* /*inputbuffer*/, void *outputbuffer, long nframes)
+{
+  struct cb_user_data *u = (struct cb_user_data *)user;
+  short *b = (short *)outputbuffer;
+  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);
+    b[i]  = (SHRT_MAX / 2) * t1;
+    b[i] += (SHRT_MAX / 2) * t2;
+    /* European dial tone */
+    /*
+    t1 = sin(2*M_PI*(i + u->position)*425/SAMPLE_FREQUENCY);
+    b[i]  = SHRT_MAX * t1;
+    */
+  }
+  /* remember our phase to avoid clicking on buffer transitions */
+  /* we'll still click if position overflows */
+  u->position += nframes;
+
+  return nframes;
+}
+
+void state_cb_tone(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:
+    fprintf(stderr, "stream started\n"); break;
+  case CUBEB_STATE_STOPPED:
+    fprintf(stderr, "stream stopped\n"); break;
+  case CUBEB_STATE_DRAINED:
+    fprintf(stderr, "stream drained\n"); break;
+  default:
+    fprintf(stderr, "unknown stream state %d\n", state);
+  }
+
+  return;
+}
+
+TEST(cubeb, tone)
+{
+  cubeb *ctx;
+  cubeb_stream *stream;
+  cubeb_stream_params params;
+  int r;
+
+  r = common_init(&ctx, "Cubeb tone example");
+  ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
+
+  std::unique_ptr<cubeb, decltype(&cubeb_destroy)>
+    cleanup_cubeb_at_exit(ctx, cubeb_destroy);
+
+  params.format = STREAM_FORMAT;
+  params.rate = SAMPLE_FREQUENCY;
+  params.channels = 1;
+  params.layout = CUBEB_LAYOUT_MONO;
+  params.prefs = CUBEB_STREAM_PREF_NONE;
+
+  std::unique_ptr<cb_user_data> user_data(new cb_user_data());
+  ASSERT_TRUE(!!user_data) << "Error allocating user data";
+
+  user_data->position = 0;
+
+  r = cubeb_stream_init(ctx, &stream, "Cubeb tone (mono)", NULL, NULL, NULL, &params,
+                        4096, data_cb_tone, state_cb_tone, user_data.get());
+  ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb stream";
+
+  std::unique_ptr<cubeb_stream, decltype(&cubeb_stream_destroy)>
+    cleanup_stream_at_exit(stream, cubeb_stream_destroy);
+
+  cubeb_stream_start(stream);
+  delay(5000);
+  cubeb_stream_stop(stream);
+
+  ASSERT_TRUE(user_data->position.load());
+}