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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 "content/common/gpu/gpu_memory_buffer_factory_shared_memory.h"
#include <vector>
#include "base/logging.h"
#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
#include "ui/gl/gl_image.h"
#include "ui/gl/gl_image_shared_memory.h"
namespace content {
GpuMemoryBufferFactorySharedMemory::GpuMemoryBufferFactorySharedMemory() {
}
GpuMemoryBufferFactorySharedMemory::~GpuMemoryBufferFactorySharedMemory() {
}
void GpuMemoryBufferFactorySharedMemory::
GetSupportedGpuMemoryBufferConfigurations(
std::vector<Configuration>* configurations) {
const Configuration supported_configurations[] = {
{ gfx::GpuMemoryBuffer::RGBA_8888, gfx::GpuMemoryBuffer::MAP },
{ gfx::GpuMemoryBuffer::BGRA_8888, gfx::GpuMemoryBuffer::MAP }
};
configurations->assign(
supported_configurations,
supported_configurations + arraysize(supported_configurations));
}
gfx::GpuMemoryBufferHandle
GpuMemoryBufferFactorySharedMemory::CreateGpuMemoryBuffer(
gfx::GpuMemoryBufferId id,
const gfx::Size& size,
gfx::GpuMemoryBuffer::Format format,
gfx::GpuMemoryBuffer::Usage usage,
int client_id,
gfx::PluginWindowHandle surface_handle) {
base::SharedMemory shared_memory;
size_t stride_in_bytes = 0;
if (!GpuMemoryBufferImpl::StrideInBytes(
size.width(), format, &stride_in_bytes))
return gfx::GpuMemoryBufferHandle();
base::CheckedNumeric<size_t> size_in_bytes = stride_in_bytes;
size_in_bytes *= size.height();
if (!size_in_bytes.IsValid())
return gfx::GpuMemoryBufferHandle();
if (!shared_memory.CreateAnonymous(size_in_bytes.ValueOrDie()))
return gfx::GpuMemoryBufferHandle();
gfx::GpuMemoryBufferHandle handle;
handle.type = gfx::SHARED_MEMORY_BUFFER;
handle.id = id;
shared_memory.ShareToProcess(base::GetCurrentProcessHandle(), &handle.handle);
return handle;
}
void GpuMemoryBufferFactorySharedMemory::DestroyGpuMemoryBuffer(
gfx::GpuMemoryBufferId id,
int client_id) {
}
gpu::ImageFactory* GpuMemoryBufferFactorySharedMemory::AsImageFactory() {
return this;
}
scoped_refptr<gfx::GLImage>
GpuMemoryBufferFactorySharedMemory::CreateImageForGpuMemoryBuffer(
const gfx::GpuMemoryBufferHandle& handle,
const gfx::Size& size,
gfx::GpuMemoryBuffer::Format format,
unsigned internalformat,
int client_id) {
scoped_refptr<gfx::GLImageSharedMemory> image(
new gfx::GLImageSharedMemory(size, internalformat));
if (!image->Initialize(handle, format))
return scoped_refptr<gfx::GLImage>();
return image;
}
} // namespace content
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