1 files changed, 60 insertions, 0 deletions
diff --git a/media/libcubeb/tests/test_latency.cpp b/media/libcubeb/tests/test_latency.cpp
new file mode 100644
index 0000000000..0586b1a367
--- /dev/null
+++ b/media/libcubeb/tests/test_latency.cpp
@@ -0,0 +1,60 @@
+#ifdef NDEBUG
+#undef NDEBUG
+#endif
+#include <stdlib.h>
+#include "cubeb/cubeb.h"
+#include <assert.h>
+#include <stdio.h>
+#ifdef CUBEB_GECKO_BUILD
+#include "TestHarness.h"
+#endif
+
+#define LOG(msg) fprintf(stderr, "%s\n", msg);
+
+int main(int /*argc*/, char * /*argv*/[])
+{
+#ifdef CUBEB_GECKO_BUILD
+  ScopedXPCOM xpcom("test_latency");
+#endif
+
+  cubeb * ctx = NULL;
+  int r;
+  uint32_t max_channels;
+  uint32_t preferred_rate;
+  uint32_t latency_frames;
+
+  LOG("latency_test start");
+  r = cubeb_init(&ctx, "Cubeb audio test");
+  assert(r == CUBEB_OK && "Cubeb init failed.");
+  LOG("cubeb_init ok");
+
+  r = cubeb_get_max_channel_count(ctx, &max_channels);
+  assert(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
+  if (r == CUBEB_OK) {
+    assert(max_channels > 0 && "Invalid max channel count.");
+    LOG("cubeb_get_max_channel_count ok");
+  }
+
+  r = cubeb_get_preferred_sample_rate(ctx, &preferred_rate);
+  assert(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
+  if (r == CUBEB_OK) {
+    assert(preferred_rate > 0 && "Invalid preferred sample rate.");
+    LOG("cubeb_get_preferred_sample_rate ok");
+  }
+
+  cubeb_stream_params params = {
+    CUBEB_SAMPLE_FLOAT32NE,
+    preferred_rate,
+    max_channels
+  };
+  r = cubeb_get_min_latency(ctx, params, &latency_frames);
+  assert(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
+  if (r == CUBEB_OK) {
+    assert(latency_frames > 0 && "Invalid minimal latency.");
+    LOG("cubeb_get_min_latency ok");
+  }
+
+  cubeb_destroy(ctx);
+  LOG("cubeb_destroy ok");
+  return EXIT_SUCCESS;
+}