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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 "ui/gfx/gpu_memory_buffer.h"
namespace cc {
namespace {
class GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
public:
GpuMemoryBufferImpl(const gfx::Size& size, Format format)
: size_(size),
format_(format),
pixels_(new uint8[size.GetArea() * BytesPerPixel(format)]),
mapped_(false) {}
// Overridden from gfx::GpuMemoryBuffer:
void* Map() override {
DCHECK(!mapped_);
mapped_ = true;
return pixels_.get();
}
void Unmap() override {
DCHECK(mapped_);
mapped_ = false;
}
bool IsMapped() const override { return mapped_; }
Format GetFormat() const override { return format_; }
uint32 GetStride() const override {
return size_.width() * BytesPerPixel(format_);
}
gfx::GpuMemoryBufferHandle GetHandle() const override {
NOTREACHED();
return gfx::GpuMemoryBufferHandle();
}
ClientBuffer AsClientBuffer() override {
return reinterpret_cast<ClientBuffer>(this);
}
private:
static size_t BytesPerPixel(Format format) {
switch (format) {
case RGBA_8888:
case RGBX_8888:
case BGRA_8888:
return 4;
}
NOTREACHED();
return 0;
}
const gfx::Size size_;
gfx::GpuMemoryBuffer::Format format_;
scoped_ptr<uint8[]> pixels_;
bool mapped_;
};
} // namespace
TestGpuMemoryBufferManager::TestGpuMemoryBufferManager() {
}
TestGpuMemoryBufferManager::~TestGpuMemoryBufferManager() {
}
scoped_ptr<gfx::GpuMemoryBuffer>
TestGpuMemoryBufferManager::AllocateGpuMemoryBuffer(
const gfx::Size& size,
gfx::GpuMemoryBuffer::Format format,
gfx::GpuMemoryBuffer::Usage usage) {
return make_scoped_ptr<gfx::GpuMemoryBuffer>(
new GpuMemoryBufferImpl(size, format));
}
gfx::GpuMemoryBuffer*
TestGpuMemoryBufferManager::GpuMemoryBufferFromClientBuffer(
ClientBuffer buffer) {
return reinterpret_cast<gfx::GpuMemoryBuffer*>(buffer);
}
} // namespace cc
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