/* static */ bool
MP4Decoder::IsVideoAccelerated(layers::LayersBackend aBackend)
{
VideoInfo config;
nsRefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aBackend, config));
if (!decoder) {
return false;
}
bool result = decoder->IsHardwareAccelerated();
return result;
}
/* static */ bool
MP4Decoder::IsVideoAccelerated(layers::LayersBackend aBackend, nsACString& aFailureReason)
{
VideoInfo config;
nsRefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aBackend, config));
if (!decoder) {
aFailureReason.AssignLiteral("Failed to create H264 decoder");
return false;
}
bool result = decoder->IsHardwareAccelerated(aFailureReason);
return result;
}
/* static */ already_AddRefed<dom::Promise>
MP4Decoder::IsVideoAccelerated(layers::LayersBackend aBackend, nsIGlobalObject* aParent)
{
MOZ_ASSERT(NS_IsMainThread());
ErrorResult rv;
RefPtr<dom::Promise> promise;
promise = dom::Promise::Create(aParent, rv);
if (rv.Failed()) {
rv.SuppressException();
return nullptr;
}
RefPtr<TaskQueue> taskQueue =
new TaskQueue(GetMediaThreadPool(MediaThreadType::PLATFORM_DECODER));
VideoInfo config;
RefPtr<MediaDataDecoder> decoder(CreateTestH264Decoder(aBackend, config, taskQueue));
if (!decoder) {
taskQueue->BeginShutdown();
taskQueue->AwaitShutdownAndIdle();
promise->MaybeResolve(NS_LITERAL_STRING("No; Failed to create H264 decoder"));
return promise.forget();
}
decoder->Init()
->Then(AbstractThread::MainThread(), __func__,
[promise, decoder, taskQueue] (TrackInfo::TrackType aTrack) {
nsCString failureReason;
bool ok = decoder->IsHardwareAccelerated(failureReason);
nsAutoString result;
if (ok) {
result.AssignLiteral("Yes");
} else {
result.AssignLiteral("No");
}
if (failureReason.Length()) {
result.AppendLiteral("; ");
AppendUTF8toUTF16(failureReason, result);
}
decoder->Shutdown();
taskQueue->BeginShutdown();
taskQueue->AwaitShutdownAndIdle();
promise->MaybeResolve(result);
},
[promise, decoder, taskQueue] (MediaDataDecoder::DecoderFailureReason aResult) {
decoder->Shutdown();
taskQueue->BeginShutdown();
taskQueue->AwaitShutdownAndIdle();
promise->MaybeResolve(NS_LITERAL_STRING("No; Failed to initialize H264 decoder"));
});
return promise.forget();
}
/* static */ bool
MP4Decoder::CanCreateH264Decoder()
{
#ifdef XP_WIN
static bool haveCachedResult = false;
static bool result = false;
if (haveCachedResult) {
return result;
}
VideoInfo config;
nsRefPtr<MediaDataDecoder> decoder(
CreateTestH264Decoder(layers::LayersBackend::LAYERS_BASIC, config));
if (decoder) {
decoder->Shutdown();
result = true;
}
haveCachedResult = true;
return result;
#else
return IsEnabled();
#endif
}
