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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/test/test_gpu_memory_buffer_manager.h"
#include "base/logging.h"
#include "base/numerics/safe_conversions.h"
#include "ui/gfx/buffer_format_util.h"
#include "ui/gfx/gpu_memory_buffer.h"
namespace cc {
namespace {
class GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
public:
GpuMemoryBufferImpl(const gfx::Size& size,
gfx::BufferFormat format,
scoped_ptr<base::SharedMemory> shared_memory,
size_t offset)
: size_(size),
format_(format),
shared_memory_(shared_memory.Pass()),
offset_(offset),
mapped_(false) {}
// Overridden from gfx::GpuMemoryBuffer:
bool Map() override {
DCHECK(!mapped_);
if (!shared_memory_->Map(offset_ +
gfx::BufferSizeForBufferFormat(size_, format_)))
return false;
mapped_ = true;
return true;
}
void* memory(size_t plane) override {
DCHECK(mapped_);
DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
return reinterpret_cast<uint8_t*>(shared_memory_->memory()) + offset_ +
gfx::BufferOffsetForBufferFormat(size_, format_, plane);
}
void Unmap() override {
DCHECK(mapped_);
shared_memory_->Unmap();
mapped_ = false;
}
gfx::Size GetSize() const override { return size_; }
gfx::BufferFormat GetFormat() const override { return format_; }
int stride(size_t plane) const override {
DCHECK_LT(plane, gfx::NumberOfPlanesForBufferFormat(format_));
return base::checked_cast<int>(gfx::RowSizeForBufferFormat(
size_.width(), format_, static_cast<int>(plane)));
}
gfx::GpuMemoryBufferId GetId() const override {
NOTREACHED();
return gfx::GpuMemoryBufferId(0);
}
gfx::GpuMemoryBufferHandle GetHandle() const override {
gfx::GpuMemoryBufferHandle handle;
handle.type = gfx::SHARED_MEMORY_BUFFER;
handle.handle = shared_memory_->handle();
handle.offset = base::checked_cast<uint32_t>(offset_);
return handle;
}
ClientBuffer AsClientBuffer() override {
return reinterpret_cast<ClientBuffer>(this);
}
private:
const gfx::Size size_;
gfx::BufferFormat format_;
scoped_ptr<base::SharedMemory> shared_memory_;
size_t offset_;
bool mapped_;
};
} // namespace
TestGpuMemoryBufferManager::TestGpuMemoryBufferManager() {
}
TestGpuMemoryBufferManager::~TestGpuMemoryBufferManager() {
}
scoped_ptr<gfx::GpuMemoryBuffer>
TestGpuMemoryBufferManager::AllocateGpuMemoryBuffer(const gfx::Size& size,
gfx::BufferFormat format,
gfx::BufferUsage usage) {
scoped_ptr<base::SharedMemory> shared_memory(new base::SharedMemory);
const size_t buffer_size = gfx::BufferSizeForBufferFormat(size, format);
if (!shared_memory->CreateAnonymous(buffer_size))
return nullptr;
return make_scoped_ptr<gfx::GpuMemoryBuffer>(
new GpuMemoryBufferImpl(size, format, shared_memory.Pass(), 0));
}
scoped_ptr<gfx::GpuMemoryBuffer>
TestGpuMemoryBufferManager::CreateGpuMemoryBufferFromHandle(
const gfx::GpuMemoryBufferHandle& handle,
const gfx::Size& size,
gfx::BufferFormat format) {
if (handle.type != gfx::SHARED_MEMORY_BUFFER)
return nullptr;
return make_scoped_ptr<gfx::GpuMemoryBuffer>(new GpuMemoryBufferImpl(
size, format,
make_scoped_ptr(new base::SharedMemory(handle.handle, false)),
handle.offset));
}
gfx::GpuMemoryBuffer*
TestGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
ClientBuffer buffer) {
return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
}
void TestGpuMemoryBufferManager::SetDestructionSyncPoint(
gfx::GpuMemoryBuffer* buffer,
uint32 sync_point) {
}
} // namespace cc
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