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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/client/internal/mappable_buffer_native_pixmap.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/memory/ptr_util.h"
#include "components/viz/common/resources/shared_image_format_utils.h"
#include "ui/gfx/buffer_types.h"
#include "ui/gfx/buffer_usage_util.h"
#include "ui/gfx/client_native_pixmap_factory.h"
#include "ui/gfx/native_pixmap.h"
#include "ui/ozone/public/ozone_platform.h"
#include "ui/ozone/public/surface_factory_ozone.h"
namespace gpu {
namespace {
void FreeNativePixmapForTesting(
scoped_refptr<gfx::NativePixmap> native_pixmap) {
// Nothing to do here. |native_pixmap| will be freed when this function
// returns and reference count drops to 0.
}
} // namespace
MappableBufferNativePixmap::MappableBufferNativePixmap(
const gfx::Size& size,
viz::SharedImageFormat format,
std::unique_ptr<gfx::ClientNativePixmap> pixmap)
: size_(size), format_(format), pixmap_(std::move(pixmap)) {}
MappableBufferNativePixmap::~MappableBufferNativePixmap() {
#if DCHECK_IS_ON()
{
base::AutoLock auto_lock(map_lock_);
DCHECK_EQ(map_count_, 0u);
}
#endif
}
void MappableBufferNativePixmap::AssertMapped() {
#if DCHECK_IS_ON()
base::AutoLock auto_lock(map_lock_);
DCHECK_GT(map_count_, 0u);
#endif
}
// static
std::unique_ptr<MappableBufferNativePixmap>
MappableBufferNativePixmap::CreateFromHandle(
gfx::ClientNativePixmapFactory* client_native_pixmap_factory,
gfx::GpuMemoryBufferHandle handle,
const gfx::Size& size,
viz::SharedImageFormat format,
gfx::BufferUsage usage) {
CHECK(viz::HasEquivalentBufferFormat(format));
std::unique_ptr<gfx::ClientNativePixmap> native_pixmap =
client_native_pixmap_factory->ImportFromHandle(
std::move(handle).native_pixmap_handle(), size, format, usage);
if (!native_pixmap) {
return nullptr;
}
return base::WrapUnique(
new MappableBufferNativePixmap(size, format, std::move(native_pixmap)));
}
// static
base::OnceClosure MappableBufferNativePixmap::AllocateForTesting(
const gfx::Size& size,
viz::SharedImageFormat format,
gfx::BufferUsage usage,
gfx::GpuMemoryBufferHandle* handle) {
scoped_refptr<gfx::NativePixmap> pixmap;
pixmap = ui::OzonePlatform::GetInstance()
->GetSurfaceFactoryOzone()
->CreateNativePixmap(gfx::kNullAcceleratedWidget, nullptr, size,
format, usage);
if (!pixmap) {
// https://crrev.com/c/5348599
// In some format + usage combination the pixmap may be null. For example,
// YUV_420_BIPLANAR + SCANOUT_CAMERA_READ_WRITE may fail to allocate because
// only some of platform supports that.
LOG(WARNING) << "Failed to allocate pixmap " << format.ToString() << " + "
<< gfx::BufferUsageToString(usage);
} else {
*handle = gfx::GpuMemoryBufferHandle(pixmap->ExportHandle());
}
// It's safe to bind FreeNativePixmapForTesting even if pixmap is not created
// as it does nothing with the pixmap. See the comment in
// FreeNativePixmapForTesting for more details.
return base::BindOnce(&FreeNativePixmapForTesting, pixmap);
}
bool MappableBufferNativePixmap::Map() {
base::AutoLock auto_lock(map_lock_);
if (map_count_++) {
return true;
}
if (format_.NumberOfPlanes() !=
static_cast<int>(pixmap_->GetNumberOfPlanes())) {
// RGBX8888 and BGR_565 allocates 2 planes while the gfx function returns 1
LOG(WARNING) << "Mismatched plane count " << format_.ToString()
<< " expected " << format_.NumberOfPlanes() << " value "
<< pixmap_->GetNumberOfPlanes();
}
if (!pixmap_->Map()) {
--map_count_;
return false;
}
return true;
}
void* MappableBufferNativePixmap::memory(size_t plane) {
AssertMapped();
return pixmap_->GetMemoryAddress(plane);
}
void MappableBufferNativePixmap::Unmap() {
base::AutoLock auto_lock(map_lock_);
DCHECK_GT(map_count_, 0u);
if (--map_count_) {
return;
}
pixmap_->Unmap();
}
int MappableBufferNativePixmap::stride(size_t plane) const {
// The caller is responsible for ensuring that |plane| is within bounds.
CHECK_LT(plane, pixmap_->GetNumberOfPlanes());
return pixmap_->GetStride(plane);
}
gfx::GpuMemoryBufferType MappableBufferNativePixmap::GetType() const {
return gfx::NATIVE_PIXMAP;
}
gfx::GpuMemoryBufferHandle MappableBufferNativePixmap::CloneHandle() const {
gfx::GpuMemoryBufferHandle handle(pixmap_->CloneHandleForIPC());
return handle;
}
void MappableBufferNativePixmap::MapAsync(
base::OnceCallback<void(bool)> callback) {
std::move(callback).Run(Map());
}
bool MappableBufferNativePixmap::AsyncMappingIsNonBlocking() const {
return false;
}
} // namespace gpu
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