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gecko-dev
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gecko-dev/dom/media/Benchmark.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Benchmark.h"
#include "BufferMediaResource.h"
#include "MediaData.h"
#include "PDMFactory.h"
#include "VideoUtils.h"
#include "WebMDemuxer.h"
#include "gfxPrefs.h"
#include "mozilla/AbstractThread.h"
#include "mozilla/Preferences.h"
#include "mozilla/SharedThreadPool.h"
#include "mozilla/StaticMutex.h"
#include "mozilla/StaticPrefs.h"
#include "mozilla/SystemGroup.h"
#include "mozilla/TaskQueue.h"
#include "mozilla/Telemetry.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/gfx/gfxVars.h"
#include "nsIGfxInfo.h"
#ifndef MOZ_WIDGET_ANDROID
#include "WebMSample.h"
#endif
using namespace mozilla::gfx;
namespace mozilla {
// Update this version number to force re-running the benchmark. Such as when
// an improvement to FFVP9 or LIBVPX is deemed worthwhile.
const uint32_t VP9Benchmark::sBenchmarkVersionID = 5;
const char* VP9Benchmark::sBenchmarkFpsPref = "media.benchmark.vp9.fps";
const char* VP9Benchmark::sBenchmarkFpsVersionCheck = "media.benchmark.vp9.versioncheck";
bool VP9Benchmark::sHasRunTest = false;
// static
bool
VP9Benchmark::ShouldRun()
{
#if defined(MOZ_WIDGET_ANDROID)
// Assume that the VP9 software decoder will always be too slow.
return false;
#else
#if defined(MOZ_APPLEMEDIA)
const nsCOMPtr<nsIGfxInfo> gfxInfo = services::GetGfxInfo();
nsString vendorID, deviceID;
gfxInfo->GetAdapterVendorID(vendorID);
// We won't run the VP9 benchmark on mac using an Intel GPU as performance are
// poor, see bug 1404042.
if (vendorID.EqualsLiteral("0x8086")) {
return false;
}
// Fall Through
#endif
return true;
#endif
}
// static
uint32_t
VP9Benchmark::MediaBenchmarkVp9Fps()
{
if (!ShouldRun()) {
return 0;
}
return StaticPrefs::MediaBenchmarkVp9Threshold();
}
// static
bool
VP9Benchmark::IsVP9DecodeFast(bool aDefault)
{
#if defined(MOZ_WIDGET_ANDROID)
return false;
#else
if (!ShouldRun()) {
return false;
}
static StaticMutex sMutex;
uint32_t decodeFps = StaticPrefs::MediaBenchmarkVp9Fps();
uint32_t hadRecentUpdate = StaticPrefs::MediaBenchmarkVp9Versioncheck();
bool needBenchmark;
{
StaticMutexAutoLock lock(sMutex);
needBenchmark = !sHasRunTest &&
(decodeFps == 0 || hadRecentUpdate != sBenchmarkVersionID);
sHasRunTest = true;
}
if (needBenchmark) {
RefPtr<WebMDemuxer> demuxer = new WebMDemuxer(
new BufferMediaResource(sWebMSample, sizeof(sWebMSample)));
RefPtr<Benchmark> estimiser = new Benchmark(
demuxer,
{ StaticPrefs::MediaBenchmarkFrames(), // frames to measure
1, // start benchmarking after decoding this frame.
8, // loop after decoding that many frames.
TimeDuration::FromMilliseconds(StaticPrefs::MediaBenchmarkTimeout()) });
estimiser->Run()->Then(
AbstractThread::MainThread(),
__func__,
[](uint32_t aDecodeFps) {
if (XRE_IsContentProcess()) {
dom::ContentChild* contentChild = dom::ContentChild::GetSingleton();
if (contentChild) {
contentChild->SendNotifyBenchmarkResult(NS_LITERAL_STRING("VP9"),
aDecodeFps);
}
} else {
Preferences::SetUint(sBenchmarkFpsPref, aDecodeFps);
Preferences::SetUint(sBenchmarkFpsVersionCheck, sBenchmarkVersionID);
}
Telemetry::Accumulate(Telemetry::HistogramID::VIDEO_VP9_BENCHMARK_FPS,
aDecodeFps);
},
[]() {});
}
if (decodeFps == 0) {
return aDefault;
}
return decodeFps >= StaticPrefs::MediaBenchmarkVp9Threshold();
#endif
}
Benchmark::Benchmark(MediaDataDemuxer* aDemuxer, const Parameters& aParameters)
: QueueObject(new TaskQueue(GetMediaThreadPool(MediaThreadType::PLAYBACK),
"Benchmark::QueueObject"))
, mParameters(aParameters)
, mKeepAliveUntilComplete(this)
, mPlaybackState(this, aDemuxer)
{
MOZ_COUNT_CTOR(Benchmark);
}
Benchmark::~Benchmark()
{
MOZ_COUNT_DTOR(Benchmark);
}
RefPtr<Benchmark::BenchmarkPromise>
Benchmark::Run()
{
RefPtr<Benchmark> self = this;
return InvokeAsync(Thread(), __func__, [self] {
RefPtr<BenchmarkPromise> p = self->mPromise.Ensure(__func__);
self->mPlaybackState.Dispatch(NS_NewRunnableFunction(
"Benchmark::Run", [self]() { self->mPlaybackState.DemuxSamples(); }));
return p;
});
}
void
Benchmark::ReturnResult(uint32_t aDecodeFps)
{
MOZ_ASSERT(OnThread());
mPromise.ResolveIfExists(aDecodeFps, __func__);
}
void
Benchmark::ReturnError(const MediaResult& aError)
{
MOZ_ASSERT(OnThread());
mPromise.RejectIfExists(aError, __func__);
}
void
Benchmark::Dispose()
{
MOZ_ASSERT(OnThread());
mKeepAliveUntilComplete = nullptr;
}
void
Benchmark::Init()
{
MOZ_ASSERT(NS_IsMainThread());
gfxVars::Initialize();
gfxPrefs::GetSingleton();
}
BenchmarkPlayback::BenchmarkPlayback(Benchmark* aGlobalState,
MediaDataDemuxer* aDemuxer)
: QueueObject(new TaskQueue(
GetMediaThreadPool(MediaThreadType::PLAYBACK),
"BenchmarkPlayback::QueueObject"))
, mGlobalState(aGlobalState)
, mDecoderTaskQueue(new TaskQueue(
GetMediaThreadPool(MediaThreadType::PLATFORM_DECODER),
"BenchmarkPlayback::mDecoderTaskQueue"))
, mDemuxer(aDemuxer)
, mSampleIndex(0)
, mFrameCount(0)
, mFinished(false)
, mDrained(false)
{
}
void
BenchmarkPlayback::DemuxSamples()
{
MOZ_ASSERT(OnThread());
RefPtr<Benchmark> ref(mGlobalState);
mDemuxer->Init()->Then(
Thread(), __func__,
[this, ref](nsresult aResult) {
MOZ_ASSERT(OnThread());
if (mDemuxer->GetNumberTracks(TrackInfo::kVideoTrack)) {
mTrackDemuxer =
mDemuxer->GetTrackDemuxer(TrackInfo::kVideoTrack, 0);
} else if (mDemuxer->GetNumberTracks(TrackInfo::kAudioTrack)) {
mTrackDemuxer =
mDemuxer->GetTrackDemuxer(TrackInfo::kAudioTrack, 0);
}
if (!mTrackDemuxer) {
Error(MediaResult(NS_ERROR_FAILURE, "Can't create track demuxer"));
return;
}
DemuxNextSample();
},
[this, ref](const MediaResult& aError) { Error(aError); });
}
void
BenchmarkPlayback::DemuxNextSample()
{
MOZ_ASSERT(OnThread());
RefPtr<Benchmark> ref(mGlobalState);
RefPtr<MediaTrackDemuxer::SamplesPromise> promise = mTrackDemuxer->GetSamples();
promise->Then(
Thread(), __func__,
[this, ref](RefPtr<MediaTrackDemuxer::SamplesHolder> aHolder) {
mSamples.AppendElements(std::move(aHolder->mSamples));
if (ref->mParameters.mStopAtFrame &&
mSamples.Length() == ref->mParameters.mStopAtFrame.ref()) {
InitDecoder(std::move(*mTrackDemuxer->GetInfo()));
} else {
Dispatch(NS_NewRunnableFunction("BenchmarkPlayback::DemuxNextSample",
[this, ref]() { DemuxNextSample(); }));
}
},
[this, ref](const MediaResult& aError) {
switch (aError.Code()) {
case NS_ERROR_DOM_MEDIA_END_OF_STREAM:
InitDecoder(std::move(*mTrackDemuxer->GetInfo()));
break;
default:
Error(aError);
break;
}
});
}
void
BenchmarkPlayback::InitDecoder(TrackInfo&& aInfo)
{
MOZ_ASSERT(OnThread());
RefPtr<PDMFactory> platform = new PDMFactory();
mDecoder = platform->CreateDecoder({ aInfo, mDecoderTaskQueue });
if (!mDecoder) {
Error(MediaResult(NS_ERROR_FAILURE, "Failed to create decoder"));
return;
}
RefPtr<Benchmark> ref(mGlobalState);
mDecoder->Init()->Then(
Thread(), __func__,
[this, ref](TrackInfo::TrackType aTrackType) { InputExhausted(); },
[this, ref](const MediaResult& aError) { Error(aError); });
}
void
BenchmarkPlayback::FinalizeShutdown()
{
MOZ_ASSERT(OnThread());
MOZ_ASSERT(!mDecoder, "mDecoder must have been shutdown already");
mDecoderTaskQueue->BeginShutdown();
mDecoderTaskQueue->AwaitShutdownAndIdle();
mDecoderTaskQueue = nullptr;
if (mTrackDemuxer) {
mTrackDemuxer->Reset();
mTrackDemuxer->BreakCycles();
mTrackDemuxer = nullptr;
}
mDemuxer = nullptr;
RefPtr<Benchmark> ref(mGlobalState);
Thread()->AsTaskQueue()->BeginShutdown()->Then(
ref->Thread(), __func__,
[ref]() { ref->Dispose(); },
[]() { MOZ_CRASH("not reached"); });
}
void
BenchmarkPlayback::GlobalShutdown()
{
MOZ_ASSERT(OnThread());
MOZ_ASSERT(!mFinished, "We've already shutdown");
mFinished = true;
if (mDecoder) {
RefPtr<Benchmark> ref(mGlobalState);
mDecoder->Flush()->Then(
Thread(), __func__,
[ref, this]() {
mDecoder->Shutdown()->Then(
Thread(), __func__,
[ref, this]() {
FinalizeShutdown();
},
[]() { MOZ_CRASH("not reached"); });
mDecoder = nullptr;
},
[]() { MOZ_CRASH("not reached"); });
} else {
FinalizeShutdown();
}
}
void
BenchmarkPlayback::Output(const MediaDataDecoder::DecodedData& aResults)
{
MOZ_ASSERT(OnThread());
MOZ_ASSERT(!mFinished);
RefPtr<Benchmark> ref(mGlobalState);
mFrameCount += aResults.Length();
if (!mDecodeStartTime && mFrameCount >= ref->mParameters.mStartupFrame) {
mDecodeStartTime = Some(TimeStamp::Now());
}
TimeStamp now = TimeStamp::Now();
uint32_t frames = mFrameCount - ref->mParameters.mStartupFrame;
TimeDuration elapsedTime = now - mDecodeStartTime.refOr(now);
if (((frames == ref->mParameters.mFramesToMeasure) &&
mFrameCount > ref->mParameters.mStartupFrame && frames > 0) ||
elapsedTime >= ref->mParameters.mTimeout || mDrained) {
uint32_t decodeFps = frames / elapsedTime.ToSeconds();
GlobalShutdown();
ref->Dispatch(
NS_NewRunnableFunction("BenchmarkPlayback::Output", [ref, decodeFps]() {
ref->ReturnResult(decodeFps);
}));
}
}
void
BenchmarkPlayback::Error(const MediaResult& aError)
{
MOZ_ASSERT(OnThread());
RefPtr<Benchmark> ref(mGlobalState);
GlobalShutdown();
ref->Dispatch(NS_NewRunnableFunction(
"BenchmarkPlayback::Error",
[ref, aError]() { ref->ReturnError(aError); }));
}
void
BenchmarkPlayback::InputExhausted()
{
MOZ_ASSERT(OnThread());
MOZ_ASSERT(!mFinished);
if (mSampleIndex >= mSamples.Length()) {
Error(MediaResult(NS_ERROR_FAILURE, "Nothing left to decode"));
return;
}
RefPtr<MediaRawData> sample = mSamples[mSampleIndex];
RefPtr<Benchmark> ref(mGlobalState);
RefPtr<MediaDataDecoder::DecodePromise> p = mDecoder->Decode(sample);
mSampleIndex++;
if (mSampleIndex == mSamples.Length() && !ref->mParameters.mStopAtFrame) {
// Complete current frame decode then drain if still necessary.
p->Then(Thread(), __func__,
[ref, this](const MediaDataDecoder::DecodedData& aResults) {
Output(aResults);
if (!mFinished) {
mDecoder->Drain()->Then(
Thread(), __func__,
[ref, this](const MediaDataDecoder::DecodedData& aResults) {
mDrained = true;
Output(aResults);
MOZ_ASSERT(mFinished, "We must be done now");
},
[ref, this](const MediaResult& aError) { Error(aError); });
}
},
[ref, this](const MediaResult& aError) { Error(aError); });
} else {
if (mSampleIndex == mSamples.Length() && ref->mParameters.mStopAtFrame) {
mSampleIndex = 0;
}
// Continue decoding
p->Then(Thread(), __func__,
[ref, this](const MediaDataDecoder::DecodedData& aResults) {
Output(aResults);
if (!mFinished) {
InputExhausted();
}
},
[ref, this](const MediaResult& aError) { Error(aError); });
}
}
} // namespace mozilla
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