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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/layers/ProfilerScreenshots.h"
#include "mozilla/TimeStamp.h"
#include "GeckoProfiler.h"
#include "gfxUtils.h"
#include "nsThreadUtils.h"
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::layers;
ProfilerScreenshots::ProfilerScreenshots()
: mMutex("ProfilerScreenshots::mMutex"), mLiveSurfaceCount(0) {}
ProfilerScreenshots::~ProfilerScreenshots() = default;
/* static */
bool ProfilerScreenshots::IsEnabled() {
#ifdef MOZ_GECKO_PROFILER
return profiler_feature_active(ProfilerFeature::Screenshots);
#else
return false;
#endif
}
void ProfilerScreenshots::SubmitScreenshot(
uintptr_t aWindowIdentifier, const gfx::IntSize& aOriginalSize,
const IntSize& aScaledSize, const TimeStamp& aTimeStamp,
const std::function<bool(DataSourceSurface*)>& aPopulateSurface) {
#ifdef MOZ_GECKO_PROFILER
RefPtr<DataSourceSurface> backingSurface = TakeNextSurface();
if (!backingSurface) {
return;
}
MOZ_RELEASE_ASSERT(aScaledSize <= backingSurface->GetSize());
bool succeeded = aPopulateSurface(backingSurface);
if (!succeeded) {
PROFILER_MARKER_UNTYPED(
"NoCompositorScreenshot because aPopulateSurface callback failed",
GRAPHICS);
ReturnSurface(backingSurface);
return;
}
int sourceThread = profiler_current_thread_id();
uintptr_t windowIdentifier = aWindowIdentifier;
IntSize originalSize = aOriginalSize;
IntSize scaledSize = aScaledSize;
TimeStamp timeStamp = aTimeStamp;
RefPtr<ProfilerScreenshots> self = this;
NS_DispatchBackgroundTask(NS_NewRunnableFunction(
"ProfilerScreenshots::SubmitScreenshot",
[self{std::move(self)}, backingSurface, sourceThread, windowIdentifier,
originalSize, scaledSize, timeStamp]() {
// Create a new surface that wraps backingSurface's data but has the
// correct size.
if (profiler_can_accept_markers()) {
DataSourceSurface::ScopedMap scopedMap(backingSurface,
DataSourceSurface::READ);
RefPtr<DataSourceSurface> surf =
Factory::CreateWrappingDataSourceSurface(
scopedMap.GetData(), scopedMap.GetStride(), scaledSize,
SurfaceFormat::B8G8R8A8);
// Encode surf to a JPEG data URL.
nsCString dataURL;
nsresult rv = gfxUtils::EncodeSourceSurface(
surf, ImageType::JPEG, u"quality=85"_ns, gfxUtils::eDataURIEncode,
nullptr, &dataURL);
if (NS_SUCCEEDED(rv)) {
// Add a marker with the data URL.
struct ScreenshotMarker {
static constexpr mozilla::Span<const char> MarkerTypeName() {
return mozilla::MakeStringSpan("CompositorScreenshot");
}
static void StreamJSONMarkerData(
mozilla::baseprofiler::SpliceableJSONWriter& aWriter,
const mozilla::ProfilerString8View& aScreenshotDataURL,
const mozilla::gfx::IntSize& aWindowSize,
uintptr_t aWindowIdentifier) {
aWriter.UniqueStringProperty("url", aScreenshotDataURL);
char hexWindowID[32];
SprintfLiteral(hexWindowID, "0x%" PRIXPTR, aWindowIdentifier);
aWriter.StringProperty("windowID", hexWindowID);
aWriter.DoubleProperty("windowWidth", aWindowSize.width);
aWriter.DoubleProperty("windowHeight", aWindowSize.height);
}
static mozilla::MarkerSchema MarkerTypeDisplay() {
return mozilla::MarkerSchema::SpecialFrontendLocation{};
}
};
profiler_add_marker(
"CompositorScreenshot", geckoprofiler::category::GRAPHICS,
{MarkerThreadId(sourceThread),
MarkerTiming::InstantAt(timeStamp)},
ScreenshotMarker{}, dataURL, originalSize, windowIdentifier);
}
}
// Return backingSurface back to the surface pool.
self->ReturnSurface(backingSurface);
}));
#endif
}
already_AddRefed<DataSourceSurface> ProfilerScreenshots::TakeNextSurface() {
MutexAutoLock mon(mMutex);
if (!mAvailableSurfaces.IsEmpty()) {
RefPtr<DataSourceSurface> surf = mAvailableSurfaces[0];
mAvailableSurfaces.RemoveElementAt(0);
return surf.forget();
}
if (mLiveSurfaceCount >= 8) {
NS_WARNING(
"already 8 surfaces in flight, skipping capture for this composite");
return nullptr;
}
mLiveSurfaceCount++;
return Factory::CreateDataSourceSurface(ScreenshotSize(),
SurfaceFormat::B8G8R8A8);
}
void ProfilerScreenshots::ReturnSurface(DataSourceSurface* aSurface) {
MutexAutoLock mon(this->mMutex);
mAvailableSurfaces.AppendElement(aSurface);
}
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