int main(int argc, char * argv[])
{
cubeb * ctx = NULL;
int rv;
uint32_t max_channels;
uint32_t preferred_rate;
uint32_t latency_ms;
rv = cubeb_init(&ctx, "Cubeb audio test");
assert(rv == CUBEB_OK && "Cubeb init failed.");
rv = cubeb_get_max_channel_count(ctx, &max_channels);
assert(rv == CUBEB_OK && "Could not query the max channe count.");
assert(max_channels > 0 && "Invalid max channel count.");
rv = cubeb_get_preferred_sample_rate(ctx, &preferred_rate);
assert(rv == CUBEB_OK && "Could not query the preferred sample rate.");
assert(preferred_rate && "Invalid preferred sample rate.");
cubeb_stream_params params = {
CUBEB_SAMPLE_FLOAT32NE,
preferred_rate,
max_channels
};
rv = cubeb_get_min_latency(ctx, params, &latency_ms);
assert(rv == CUBEB_OK && "Could not query the minimal latency.");
assert(latency_ms && "Invalid minimal latency.");
cubeb_destroy(ctx);
return EXIT_SUCCESS;
}
int main(int /*argc*/, char * /*argv*/[])
{
#ifdef CUBEB_GECKO_BUILD
ScopedXPCOM xpcom("test_duplex");
#endif
cubeb *ctx;
cubeb_stream *stream;
cubeb_stream_params input_params;
cubeb_stream_params output_params;
int r;
user_state stream_state = { false };
uint32_t latency_frames = 0;
r = cubeb_init(&ctx, "Cubeb duplex example");
if (r != CUBEB_OK) {
fprintf(stderr, "Error initializing cubeb library\n");
return r;
}
/* This test needs an available input device, skip it if this host does not
* have one. */
if (!has_available_input_device(ctx)) {
return 0;
}
/* typical user-case: mono input, stereo output, low latency. */
input_params.format = STREAM_FORMAT;
input_params.rate = 48000;
input_params.channels = 1;
output_params.format = STREAM_FORMAT;
output_params.rate = 48000;
output_params.channels = 2;
r = cubeb_get_min_latency(ctx, output_params, &latency_frames);
if (r != CUBEB_OK) {
fprintf(stderr, "Could not get minimal latency\n");
return r;
}
r = cubeb_stream_init(ctx, &stream, "Cubeb duplex",
NULL, &input_params, NULL, &output_params,
latency_frames, data_cb, state_cb, &stream_state);
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(stream_state.seen_noise);
return CUBEB_OK;
}
static void
test_context_variables(void)
{
int r;
cubeb * ctx;
uint32_t value;
cubeb_stream_params params;
BEGIN_TEST;
r = cubeb_init(&ctx, "test_context_variables");
assert(r == 0 && ctx);
params.channels = STREAM_CHANNELS;
params.format = STREAM_FORMAT;
params.rate = STREAM_RATE;
r = cubeb_get_min_latency(ctx, params, &value);
assert(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
if (r == CUBEB_OK) {
assert(value > 0);
}
r = cubeb_get_preferred_sample_rate(ctx, &value);
assert(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
if (r == CUBEB_OK) {
assert(value > 0);
}
cubeb_destroy(ctx);
END_TEST;
}
TEST(cubeb, context_variables)
{
int r;
cubeb * ctx;
uint32_t value;
cubeb_channel_layout layout;
cubeb_stream_params params;
r = common_init(&ctx, "test_context_variables");
ASSERT_EQ(r, CUBEB_OK);
ASSERT_NE(ctx, nullptr);
params.channels = STREAM_CHANNELS;
params.format = STREAM_FORMAT;
params.rate = STREAM_RATE;
params.layout = STREAM_LAYOUT;
r = cubeb_get_min_latency(ctx, ¶ms, &value);
ASSERT_TRUE(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
if (r == CUBEB_OK) {
ASSERT_TRUE(value > 0);
}
r = cubeb_get_preferred_sample_rate(ctx, &value);
ASSERT_TRUE(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
if (r == CUBEB_OK) {
ASSERT_TRUE(value > 0);
}
r = cubeb_get_preferred_channel_layout(ctx, &layout);
ASSERT_TRUE(r == CUBEB_ERROR_NOT_SUPPORTED ||
(r == CUBEB_OK && layout != CUBEB_LAYOUT_UNDEFINED) ||
(r == CUBEB_ERROR && layout == CUBEB_LAYOUT_UNDEFINED));
cubeb_destroy(ctx);
}
bool CubebStream::Init()
{
m_ctx = CubebUtils::GetContext();
if (!m_ctx)
return false;
m_stereo = !SConfig::GetInstance().bDPL2Decoder;
cubeb_stream_params params;
params.rate = m_mixer->GetSampleRate();
if (m_stereo)
{
params.channels = 2;
params.format = CUBEB_SAMPLE_S16NE;
params.layout = CUBEB_LAYOUT_STEREO;
}
else
{
params.channels = 6;
params.format = CUBEB_SAMPLE_FLOAT32NE;
params.layout = CUBEB_LAYOUT_3F2_LFE;
}
u32 minimum_latency = 0;
if (cubeb_get_min_latency(m_ctx.get(), ¶ms, &minimum_latency) != CUBEB_OK)
ERROR_LOG(AUDIO, "Error getting minimum latency");
INFO_LOG(AUDIO, "Minimum latency: %i frames", minimum_latency);
return cubeb_stream_init(m_ctx.get(), &m_stream, "Dolphin Audio Output", nullptr, nullptr,
nullptr, ¶ms, std::max(BUFFER_SAMPLES, minimum_latency),
DataCallback, StateCallback, this) == CUBEB_OK;
}
// This code used to live inside AudioStream::Init(), but on Mac (others?)
// it has been known to take 300-800 (or even 8500) ms to execute(!)
nsresult
AudioStream::OpenCubeb(cubeb_stream_params &aParams,
LatencyRequest aLatencyRequest)
{
cubeb* cubebContext = GetCubebContext();
if (!cubebContext) {
MonitorAutoLock mon(mMonitor);
mState = AudioStream::ERRORED;
return NS_ERROR_FAILURE;
}
// If the latency pref is set, use it. Otherwise, if this stream is intended
// for low latency playback, try to get the lowest latency possible.
// Otherwise, for normal streams, use 100ms.
uint32_t latency;
if (aLatencyRequest == LowLatency && !CubebLatencyPrefSet()) {
if (cubeb_get_min_latency(cubebContext, aParams, &latency) != CUBEB_OK) {
latency = GetCubebLatency();
}
} else {
latency = GetCubebLatency();
}
{
cubeb_stream* stream;
if (cubeb_stream_init(cubebContext, &stream, "AudioStream", aParams,
latency, DataCallback_S, StateCallback_S, this) == CUBEB_OK) {
MonitorAutoLock mon(mMonitor);
mCubebStream.own(stream);
// Make sure we weren't shut down while in flight!
if (mState == SHUTDOWN) {
mCubebStream.reset();
LOG(("AudioStream::OpenCubeb() %p Shutdown while opening cubeb", this));
return NS_ERROR_FAILURE;
}
// We can't cubeb_stream_start() the thread from a transient thread due to
// cubeb API requirements (init can be called from another thread, but
// not start/stop/destroy/etc)
} else {
MonitorAutoLock mon(mMonitor);
mState = ERRORED;
LOG(("AudioStream::OpenCubeb() %p failed to init cubeb", this));
return NS_ERROR_FAILURE;
}
}
if (!mStartTime.IsNull()) {
TimeDuration timeDelta = TimeStamp::Now() - mStartTime;
LOG(("AudioStream creation time %sfirst: %u ms", mIsFirst ? "" : "not ",
(uint32_t) timeDelta.ToMilliseconds()));
Telemetry::Accumulate(mIsFirst ? Telemetry::AUDIOSTREAM_FIRST_OPEN_MS :
Telemetry::AUDIOSTREAM_LATER_OPEN_MS, timeDelta.ToMilliseconds());
}
return NS_OK;
}
// This code used to live inside AudioStream::Init(), but on Mac (others?)
// it has been known to take 300-800 (or even 8500) ms to execute(!)
nsresult
AudioStream::OpenCubeb(cubeb_stream_params &aParams,
LatencyRequest aLatencyRequest)
{
cubeb* cubebContext = CubebUtils::GetCubebContext();
if (!cubebContext) {
NS_WARNING("Can't get cubeb context!");
MonitorAutoLock mon(mMonitor);
mState = AudioStream::ERRORED;
return NS_ERROR_FAILURE;
}
// If the latency pref is set, use it. Otherwise, if this stream is intended
// for low latency playback, try to get the lowest latency possible.
// Otherwise, for normal streams, use 100ms.
uint32_t latency;
if (aLatencyRequest == LowLatency && !CubebUtils::CubebLatencyPrefSet()) {
if (cubeb_get_min_latency(cubebContext, aParams, &latency) != CUBEB_OK) {
latency = CubebUtils::GetCubebLatency();
}
} else {
latency = CubebUtils::GetCubebLatency();
}
{
cubeb_stream* stream;
if (cubeb_stream_init(cubebContext, &stream, "AudioStream", aParams,
latency, DataCallback_S, StateCallback_S, this) == CUBEB_OK) {
MonitorAutoLock mon(mMonitor);
MOZ_ASSERT(mState != SHUTDOWN);
mCubebStream.reset(stream);
// We can't cubeb_stream_start() the thread from a transient thread due to
// cubeb API requirements (init can be called from another thread, but
// not start/stop/destroy/etc)
} else {
MonitorAutoLock mon(mMonitor);
mState = ERRORED;
NS_WARNING(nsPrintfCString("AudioStream::OpenCubeb() %p failed to init cubeb", this).get());
return NS_ERROR_FAILURE;
}
}
cubeb_stream_register_device_changed_callback(mCubebStream.get(),
AudioStream::DeviceChangedCallback_s);
mState = INITIALIZED;
if (!mStartTime.IsNull()) {
TimeDuration timeDelta = TimeStamp::Now() - mStartTime;
LOG(("AudioStream creation time %sfirst: %u ms", mIsFirst ? "" : "not ",
(uint32_t) timeDelta.ToMilliseconds()));
Telemetry::Accumulate(mIsFirst ? Telemetry::AUDIOSTREAM_FIRST_OPEN_MS :
Telemetry::AUDIOSTREAM_LATER_OPEN_MS, timeDelta.ToMilliseconds());
}
return NS_OK;
}
void
AudioCallbackDriver::Init()
{
cubeb_stream_params params;
uint32_t latency;
MOZ_ASSERT(!NS_IsMainThread(),
"This is blocking and should never run on the main thread.");
mSampleRate = params.rate = CubebUtils::PreferredSampleRate();
#if defined(__ANDROID__)
#if defined(MOZ_B2G)
params.stream_type = CubebUtils::ConvertChannelToCubebType(mAudioChannel);
#else
params.stream_type = CUBEB_STREAM_TYPE_MUSIC;
#endif
if (params.stream_type == CUBEB_STREAM_TYPE_MAX) {
NS_WARNING("Bad stream type");
return;
}
#else
(void)mAudioChannel;
#endif
params.channels = mGraphImpl->AudioChannelCount();
if (AUDIO_OUTPUT_FORMAT == AUDIO_FORMAT_S16) {
params.format = CUBEB_SAMPLE_S16NE;
} else {
params.format = CUBEB_SAMPLE_FLOAT32NE;
}
if (cubeb_get_min_latency(CubebUtils::GetCubebContext(), params, &latency) != CUBEB_OK) {
NS_WARNING("Could not get minimal latency from cubeb.");
return;
}
cubeb_stream* stream;
if (cubeb_stream_init(CubebUtils::GetCubebContext(), &stream,
"AudioCallbackDriver", params, latency,
DataCallback_s, StateCallback_s, this) == CUBEB_OK) {
mAudioStream.own(stream);
} else {
NS_WARNING("Could not create a cubeb stream for MediaStreamGraph.");
return;
}
cubeb_stream_register_device_changed_callback(mAudioStream,
AudioCallbackDriver::DeviceChangedCallback_s);
StartStream();
STREAM_LOG(PR_LOG_DEBUG, ("AudioCallbackDriver started."));
}
// This code used to live inside AudioStream::Init(), but on Mac (others?)
// it has been known to take 300-800 (or even 8500) ms to execute(!)
nsresult
AudioStream::OpenCubeb(cubeb_stream_params &aParams,
LatencyRequest aLatencyRequest)
{
cubeb* cubebContext = GetCubebContext();
if (!cubebContext) {
MonitorAutoLock mon(mMonitor);
mState = AudioStream::ERRORED;
return NS_ERROR_FAILURE;
}
// If the latency pref is set, use it. Otherwise, if this stream is intended
// for low latency playback, try to get the lowest latency possible.
// Otherwise, for normal streams, use 100ms.
uint32_t latency;
if (aLatencyRequest == LowLatency && !CubebLatencyPrefSet()) {
if (cubeb_get_min_latency(cubebContext, aParams, &latency) != CUBEB_OK) {
latency = GetCubebLatency();
}
} else {
latency = GetCubebLatency();
}
{
cubeb_stream* stream;
if (cubeb_stream_init(cubebContext, &stream, "AudioStream", aParams,
latency, DataCallback_S, StateCallback_S, this) == CUBEB_OK) {
MonitorAutoLock mon(mMonitor);
mCubebStream.own(stream);
// Make sure we weren't shut down while in flight!
if (mState == SHUTDOWN) {
mCubebStream.reset();
LOG(("AudioStream::OpenCubeb() %p Shutdown while opening cubeb", this));
return NS_ERROR_FAILURE;
}
// We can't cubeb_stream_start() the thread from a transient thread due to
// cubeb API requirements (init can be called from another thread, but
// not start/stop/destroy/etc)
} else {
MonitorAutoLock mon(mMonitor);
mState = ERRORED;
LOG(("AudioStream::OpenCubeb() %p failed to init cubeb", this));
return NS_ERROR_FAILURE;
}
}
return NS_OK;
}
TEST(cubeb, duplex)
{
cubeb *ctx;
cubeb_stream *stream;
cubeb_stream_params input_params;
cubeb_stream_params output_params;
int r;
user_state_duplex stream_state = { false };
uint32_t latency_frames = 0;
r = cubeb_init(&ctx, "Cubeb duplex example", NULL);
ASSERT_EQ(r, CUBEB_OK) << "Error initializing cubeb library";
std::unique_ptr<cubeb, decltype(&cubeb_destroy)>
cleanup_cubeb_at_exit(ctx, cubeb_destroy);
/* This test needs an available input device, skip it if this host does not
* have one. */
if (!has_available_input_device(ctx)) {
return;
}
/* typical user-case: mono input, stereo output, low latency. */
input_params.format = STREAM_FORMAT;
input_params.rate = 48000;
input_params.channels = 1;
input_params.layout = CUBEB_LAYOUT_MONO;
output_params.format = STREAM_FORMAT;
output_params.rate = 48000;
output_params.channels = 2;
output_params.layout = CUBEB_LAYOUT_STEREO;
r = cubeb_get_min_latency(ctx, output_params, &latency_frames);
ASSERT_EQ(r, CUBEB_OK) << "Could not get minimal latency";
r = cubeb_stream_init(ctx, &stream, "Cubeb duplex",
NULL, &input_params, NULL, &output_params,
latency_frames, data_cb_duplex, state_cb_duplex, &stream_state);
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(500);
cubeb_stream_stop(stream);
ASSERT_TRUE(stream_state.seen_audio);
}
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_ms;
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_ms);
assert(r == CUBEB_OK || r == CUBEB_ERROR_NOT_SUPPORTED);
if (r == CUBEB_OK) {
assert(latency_ms > 0 && "Invalid minimal latency.");
LOG("cubeb_get_min_latency ok");
}
cubeb_destroy(ctx);
LOG("cubeb_destroy ok");
return EXIT_SUCCESS;
}
void
AudioCallbackDriver::Init()
{
cubeb_stream_params params;
uint32_t latency;
MOZ_ASSERT(!NS_IsMainThread(),
"This is blocking and should never run on the main thread.");
mSampleRate = params.rate = CubebUtils::PreferredSampleRate();
#if defined(__ANDROID__)
#if defined(MOZ_B2G)
params.stream_type = CubebUtils::ConvertChannelToCubebType(mAudioChannel);
#else
params.stream_type = CUBEB_STREAM_TYPE_MUSIC;
#endif
if (params.stream_type == CUBEB_STREAM_TYPE_MAX) {
NS_WARNING("Bad stream type");
return;
}
#else
(void)mAudioChannel;
#endif
params.channels = mGraphImpl->AudioChannelCount();
if (AUDIO_OUTPUT_FORMAT == AUDIO_FORMAT_S16) {
params.format = CUBEB_SAMPLE_S16NE;
} else {
params.format = CUBEB_SAMPLE_FLOAT32NE;
}
if (cubeb_get_min_latency(CubebUtils::GetCubebContext(), params, &latency) != CUBEB_OK) {
NS_WARNING("Could not get minimal latency from cubeb.");
return;
}
cubeb_stream* stream;
if (cubeb_stream_init(CubebUtils::GetCubebContext(), &stream,
"AudioCallbackDriver", params, latency,
DataCallback_s, StateCallback_s, this) == CUBEB_OK) {
mAudioStream.own(stream);
} else {
NS_WARNING("Could not create a cubeb stream for MediaStreamGraph, falling back to a SystemClockDriver");
// Fall back to a driver using a normal thread.
mNextDriver = new SystemClockDriver(GraphImpl());
mNextDriver->SetGraphTime(this, mIterationStart, mIterationEnd);
mGraphImpl->SetCurrentDriver(mNextDriver);
DebugOnly<bool> found = mGraphImpl->RemoveMixerCallback(this);
NS_WARN_IF_FALSE(!found, "Mixer callback not added when switching?");
mNextDriver->Start();
return;
}
cubeb_stream_register_device_changed_callback(mAudioStream,
AudioCallbackDriver::DeviceChangedCallback_s);
StartStream();
STREAM_LOG(LogLevel::Debug, ("AudioCallbackDriver started."));
}
nsresult
AudioStream::Init(int32_t aNumChannels, int32_t aRate,
const dom::AudioChannelType aAudioChannelType,
LatencyRequest aLatencyRequest)
{
cubeb* cubebContext = GetCubebContext();
if (!cubebContext || aNumChannels < 0 || aRate < 0) {
return NS_ERROR_FAILURE;
}
PR_LOG(gAudioStreamLog, PR_LOG_DEBUG,
("%s channels: %d, rate: %d", __FUNCTION__, aNumChannels, aRate));
mInRate = mOutRate = aRate;
mChannels = aNumChannels;
mOutChannels = (aNumChannels > 2) ? 2 : aNumChannels;
mLatencyRequest = aLatencyRequest;
mDumpFile = OpenDumpFile(this);
cubeb_stream_params params;
params.rate = aRate;
params.channels = mOutChannels;
#if defined(__ANDROID__)
#if defined(MOZ_B2G)
params.stream_type = ConvertChannelToCubebType(aAudioChannelType);
#else
params.stream_type = CUBEB_STREAM_TYPE_MUSIC;
#endif
if (params.stream_type == CUBEB_STREAM_TYPE_MAX) {
return NS_ERROR_INVALID_ARG;
}
#endif
if (AUDIO_OUTPUT_FORMAT == AUDIO_FORMAT_S16) {
params.format = CUBEB_SAMPLE_S16NE;
} else {
params.format = CUBEB_SAMPLE_FLOAT32NE;
}
mBytesPerFrame = sizeof(AudioDataValue) * mOutChannels;
mAudioClock.Init();
// If the latency pref is set, use it. Otherwise, if this stream is intended
// for low latency playback, try to get the lowest latency possible.
// Otherwise, for normal streams, use 100ms.
uint32_t latency;
if (aLatencyRequest == LowLatency && !CubebLatencyPrefSet()) {
if (cubeb_get_min_latency(cubebContext, params, &latency) != CUBEB_OK) {
latency = GetCubebLatency();
}
} else {
latency = GetCubebLatency();
}
{
cubeb_stream* stream;
if (cubeb_stream_init(cubebContext, &stream, "AudioStream", params,
latency, DataCallback_S, StateCallback_S, this) == CUBEB_OK) {
mCubebStream.own(stream);
}
}
if (!mCubebStream) {
return NS_ERROR_FAILURE;
}
// Size mBuffer for one second of audio. This value is arbitrary, and was
// selected based on the observed behaviour of the existing AudioStream
// implementations.
uint32_t bufferLimit = FramesToBytes(aRate);
NS_ABORT_IF_FALSE(bufferLimit % mBytesPerFrame == 0, "Must buffer complete frames");
mBuffer.SetCapacity(bufferLimit);
// Start the stream right away when low latency has been requested. This means
// that the DataCallback will feed silence to cubeb, until the first frames
// are writtent to this AudioStream.
if (mLatencyRequest == LowLatency) {
Start();
}
return NS_OK;
}
