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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/viz/service/display/software_output_device.h"
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/task/sequenced_task_runner.h"
#include "skia/ext/legacy_display_globals.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkColorSpace.h"
#include "ui/gfx/vsync_provider.h"
namespace viz {
SoftwareOutputDevice::SoftwareOutputDevice()
: SoftwareOutputDevice(base::SequencedTaskRunner::GetCurrentDefault()) {}
SoftwareOutputDevice::SoftwareOutputDevice(
scoped_refptr<base::SequencedTaskRunner> task_runner)
: task_runner_(std::move(task_runner)) {}
SoftwareOutputDevice::~SoftwareOutputDevice() = default;
void SoftwareOutputDevice::BindToClient(SoftwareOutputDeviceClient* client) {
DCHECK(client);
DCHECK(!client_);
client_ = client;
}
void SoftwareOutputDevice::Resize(const gfx::Size& viewport_pixel_size,
float scale_factor) {
if (viewport_pixel_size_ == viewport_pixel_size)
return;
SkImageInfo info =
SkImageInfo::MakeN32(viewport_pixel_size.width(),
viewport_pixel_size.height(), kOpaque_SkAlphaType);
viewport_pixel_size_ = viewport_pixel_size;
SkSurfaceProps props = skia::LegacyDisplayGlobals::GetSkSurfaceProps();
surface_ = SkSurfaces::Raster(info, &props);
}
SkCanvas* SoftwareOutputDevice::BeginPaint(const gfx::Rect& damage_rect) {
damage_rect_ = damage_rect;
return surface_ ? surface_->getCanvas() : nullptr;
}
void SoftwareOutputDevice::EndPaint() {}
gfx::VSyncProvider* SoftwareOutputDevice::GetVSyncProvider() {
return vsync_provider_.get();
}
void SoftwareOutputDevice::OnSwapBuffers(SwapBuffersCallback swap_ack_callback,
gfx::FrameData data) {
task_runner_->PostTask(FROM_HERE, base::BindOnce(std::move(swap_ack_callback),
viewport_pixel_size_));
}
int SoftwareOutputDevice::MaxFramesPending() const {
return 1;
}
bool SoftwareOutputDevice::SupportsOverridePlatformSize() const {
return false;
}
SkBitmap SoftwareOutputDevice::ReadbackForTesting() {
SkBitmap bitmap;
bitmap.allocPixels(
surface_->imageInfo().makeColorSpace(SkColorSpace::MakeSRGB()));
CHECK(surface_->readPixels(bitmap, 0, 0));
return bitmap;
}
} // namespace viz
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