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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
#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