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Diffstat (limited to '')
| -rw-r--r-- | dom/media/mediacapabilities/DecoderBenchmark.cpp | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/dom/media/mediacapabilities/DecoderBenchmark.cpp b/dom/media/mediacapabilities/DecoderBenchmark.cpp new file mode 100644 index 0000000000..b5c9a2a693 --- /dev/null +++ b/dom/media/mediacapabilities/DecoderBenchmark.cpp @@ -0,0 +1,243 @@ +/* -*- 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 "DecoderBenchmark.h" +#include "mozilla/BenchmarkStorageChild.h" +#include "mozilla/media/MediaUtils.h" +#include "mozilla/StaticPrefs_media.h" + +namespace mozilla { + +void DecoderBenchmark::StoreScore(const nsACString& aDecoderName, + const nsACString& aKey, + RefPtr<FrameStatistics> aStats) { + FrameStatisticsData statsData = aStats->GetFrameStatisticsData(); + uint64_t totalFrames = FrameStatistics::GetTotalFrames(statsData); + uint64_t droppedFrames = FrameStatistics::GetDroppedFrames(statsData); + + MOZ_ASSERT(droppedFrames <= totalFrames); + MOZ_ASSERT(totalFrames >= mLastTotalFrames); + MOZ_ASSERT(droppedFrames >= mLastDroppedFrames); + + uint64_t diffTotalFrames = totalFrames - mLastTotalFrames; + uint64_t diffDroppedFrames = droppedFrames - mLastDroppedFrames; + + /* Update now in case the method returns at the if check bellow. */ + mLastTotalFrames = totalFrames; + mLastDroppedFrames = droppedFrames; + + /* A minimum number of 10 frames is required to store the score. */ + if (diffTotalFrames < 10) { + return; + } + + int32_t percentage = + 100 - 100 * float(diffDroppedFrames) / float(diffTotalFrames); + + MOZ_ASSERT(percentage >= 0); + + Put(aDecoderName, aKey, percentage); +} + +void DecoderBenchmark::Put(const nsACString& aDecoderName, + const nsACString& aKey, int32_t aValue) { + MOZ_ASSERT(NS_IsMainThread()); + const nsCString name(aDecoderName); + const nsCString key(aKey); + BenchmarkStorageChild::Instance()->SendPut(name, key, aValue); +} + +RefPtr<BenchmarkScorePromise> DecoderBenchmark::GetScore( + const nsACString& aDecoderName, const nsACString& aKey) { + if (NS_IsMainThread()) { + return Get(aDecoderName, aKey); + } + + RefPtr<DecoderBenchmark> self = this; + const nsCString decoderName(aDecoderName); + const nsCString key(aKey); + return InvokeAsync( + GetMainThreadSerialEventTarget(), __func__, + [self, decoderName, key] { return self->Get(decoderName, key); }); +} + +RefPtr<BenchmarkScorePromise> DecoderBenchmark::Get( + const nsACString& aDecoderName, const nsACString& aKey) { + MOZ_ASSERT(NS_IsMainThread()); + + const nsCString name(aDecoderName); + const nsCString key(aKey); + return BenchmarkStorageChild::Instance()->SendGet(name, key)->Then( + GetCurrentSerialEventTarget(), __func__, + [](int32_t aResult) { + return BenchmarkScorePromise::CreateAndResolve(aResult, __func__); + }, + [](ipc::ResponseRejectReason&&) { + return BenchmarkScorePromise::CreateAndReject(NS_ERROR_FAILURE, + __func__); + }); +} + +/* The key string consists of the video properties resolution, framerate, + * and bitdepth. There are various levels for each of them. The key is + * formated by the closest level, for example, a video with width=1920, + * height=1080, frameRate=24, and bitdepth=8bit will have the key: + * "ResolutionLevel5-FrameRateLevel1-8bit". */ + +#define NELEMS(x) (sizeof(x) / sizeof((x)[0])) + +/* Keep them sorted */ +const uint32_t PixelLevels[] = { + /* 256x144 =*/36864, + /* 426x240 =*/102240, + /* 640x360 =*/230400, + /* 854x480 =*/409920, + /* 1280x720 =*/921600, + /* 1920x1080 =*/2073600, + /* 2560x1440 =*/3686400, + /* 3840x2160 =*/8294400, +}; +const size_t PixelLevelsSize = NELEMS(PixelLevels); + +const uint32_t FrameRateLevels[] = { + 15, 24, 30, 50, 60, +}; +const size_t FrameRateLevelsSize = NELEMS(FrameRateLevels); + +/* static */ +nsCString KeyUtil::FindLevel(const uint32_t aLevels[], const size_t length, + uint32_t aValue) { + MOZ_ASSERT(aValue); + if (aValue <= aLevels[0]) { + return "Level0"_ns; + } + nsAutoCString level("Level"); + size_t lastIndex = length - 1; + if (aValue >= aLevels[lastIndex]) { + level.AppendInt(static_cast<uint32_t>(lastIndex)); + return std::move(level); + } + for (size_t i = 0; i < lastIndex; ++i) { + if (aValue >= aLevels[i + 1]) { + continue; + } + if (aValue - aLevels[i] < aLevels[i + 1] - aValue) { + level.AppendInt(static_cast<uint32_t>(i)); + return std::move(level); + } + level.AppendInt(static_cast<uint32_t>(i + 1)); + return std::move(level); + } + MOZ_CRASH("Array is not sorted"); + return ""_ns; +} + +/* static */ +nsCString KeyUtil::BitDepthToStr(uint8_t aBitDepth) { + switch (aBitDepth) { + case 8: // ColorDepth::COLOR_8 + return "-8bit"_ns; + case 10: // ColorDepth::COLOR_10 + case 12: // ColorDepth::COLOR_12 + case 16: // ColorDepth::COLOR_16 + return "-non8bit"_ns; + } + MOZ_ASSERT_UNREACHABLE("invalid color depth value"); + return ""_ns; +} + +/* static */ +nsCString KeyUtil::CreateKey(const DecoderBenchmarkInfo& aBenchInfo) { + nsAutoCString key("Resolution"); + key.Append(FindLevel(PixelLevels, PixelLevelsSize, + aBenchInfo.mWidth * aBenchInfo.mHeight)); + + key.Append("-FrameRate"); + key.Append( + FindLevel(FrameRateLevels, FrameRateLevelsSize, aBenchInfo.mFrameRate)); + + key.Append(BitDepthToStr(aBenchInfo.mBitDepth)); + + return std::move(key); +} + +void DecoderBenchmark::Store(const DecoderBenchmarkInfo& aBenchInfo, + RefPtr<FrameStatistics> aStats) { + if (!XRE_IsContentProcess()) { + NS_WARNING( + "Storing a benchmark is only allowed only from the content process."); + return; + } + StoreScore(aBenchInfo.mContentType, KeyUtil::CreateKey(aBenchInfo), aStats); +} + +/* static */ +RefPtr<BenchmarkScorePromise> DecoderBenchmark::Get( + const DecoderBenchmarkInfo& aBenchInfo) { + if (!XRE_IsContentProcess()) { + NS_WARNING( + "Getting a benchmark is only allowed only from the content process."); + return BenchmarkScorePromise::CreateAndReject(NS_ERROR_FAILURE, __func__); + } + // There is no need for any of the data members to query the database, thus + // it can be a static method. + auto bench = MakeRefPtr<DecoderBenchmark>(); + return bench->GetScore(aBenchInfo.mContentType, + KeyUtil::CreateKey(aBenchInfo)); +} + +static nsTHashMap<nsCStringHashKey, int32_t> DecoderVersionTable() { + nsTHashMap<nsCStringHashKey, int32_t> decoderVersionTable; + + /* + * For the decoders listed here, the benchmark version number will be checked. + * If the version number does not exist in the database or is different than + * the version number listed here, all the benchmark entries for this decoder + * will be erased. An example of assigning the version number `1` for AV1 + * decoder is: + * + * decoderVersionTable.InsertOrUpdate("video/av1"_ns, 1); + * + * For the decoders not listed here the `CheckVersion` method exits early, to + * avoid sending unecessary IPC messages. + */ + + return decoderVersionTable; +} + +/* static */ +void DecoderBenchmark::CheckVersion(const nsACString& aDecoderName) { + if (!XRE_IsContentProcess()) { + NS_WARNING( + "Checking version is only allowed only from the content process."); + return; + } + + if (!StaticPrefs::media_mediacapabilities_from_database()) { + return; + } + + nsCString name(aDecoderName); + int32_t version; + if (!DecoderVersionTable().Get(name, &version)) { + // A version is not set for that decoder ignore. + return; + } + + if (NS_IsMainThread()) { + BenchmarkStorageChild::Instance()->SendCheckVersion(name, version); + return; + } + + DebugOnly<nsresult> rv = + GetMainThreadSerialEventTarget()->Dispatch(NS_NewRunnableFunction( + "DecoderBenchmark::CheckVersion", [name, version]() { + BenchmarkStorageChild::Instance()->SendCheckVersion(name, version); + })); + MOZ_ASSERT(NS_SUCCEEDED(rv)); +} + +} // namespace mozilla |