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// Copyright (c) 2010 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.
#if defined(ENABLE_GPU)
#include "base/process_util.h"
#include "base/shared_memory.h"
#include "build/build_config.h"
#include "chrome/common/gpu_messages.h"
#include "chrome/gpu/gpu_channel.h"
#include "chrome/gpu/gpu_command_buffer_stub.h"
using gpu::Buffer;
GpuCommandBufferStub::GpuCommandBufferStub(GpuChannel* channel,
gfx::NativeView view,
GpuCommandBufferStub* parent,
const gfx::Size& size,
uint32 parent_texture_id,
int32 route_id)
: channel_(channel),
view_(view),
parent_(parent),
initial_size_(size),
parent_texture_id_(parent_texture_id),
route_id_(route_id) {
}
GpuCommandBufferStub::~GpuCommandBufferStub() {
if (processor_.get()) {
processor_->Destroy();
}
}
void GpuCommandBufferStub::OnMessageReceived(const IPC::Message& message) {
IPC_BEGIN_MESSAGE_MAP(GpuCommandBufferStub, message)
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_Initialize, OnInitialize);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_GetState, OnGetState);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_AsyncGetState, OnAsyncGetState);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_Flush, OnFlush);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_AsyncFlush, OnAsyncFlush);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_CreateTransferBuffer,
OnCreateTransferBuffer);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_DestroyTransferBuffer,
OnDestroyTransferBuffer);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_GetTransferBuffer,
OnGetTransferBuffer);
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_ResizeOffscreenFrameBuffer,
OnResizeOffscreenFrameBuffer);
IPC_MESSAGE_UNHANDLED_ERROR()
IPC_END_MESSAGE_MAP()
}
bool GpuCommandBufferStub::Send(IPC::Message* message) {
return channel_->Send(message);
}
void GpuCommandBufferStub::OnInitialize(
int32 size,
base::SharedMemoryHandle* ring_buffer) {
DCHECK(!command_buffer_.get());
*ring_buffer = base::SharedMemory::NULLHandle();
command_buffer_.reset(new gpu::CommandBufferService);
// Initialize the CommandBufferService and GPUProcessor.
if (command_buffer_->Initialize(size)) {
Buffer buffer = command_buffer_->GetRingBuffer();
if (buffer.shared_memory) {
gpu::GPUProcessor* parent_processor =
parent_ ? parent_->processor_.get() : NULL;
processor_.reset(new gpu::GPUProcessor(command_buffer_.get()));
// TODO(apatrick): The reinterpret_cast below is only valid on windows.
#if !defined(OS_WIN)
DCHECK_EQ(view_, static_cast<gfx::NativeView>(0));
#endif
if (processor_->Initialize(
reinterpret_cast<gfx::PluginWindowHandle>(view_),
initial_size_,
parent_processor,
parent_texture_id_)) {
command_buffer_->SetPutOffsetChangeCallback(
NewCallback(processor_.get(),
&gpu::GPUProcessor::ProcessCommands));
// Assume service is responsible for duplicating the handle from the
// calling process.
buffer.shared_memory->ShareToProcess(channel_->renderer_handle(),
ring_buffer);
} else {
processor_.reset();
command_buffer_.reset();
}
}
}
}
void GpuCommandBufferStub::OnGetState(gpu::CommandBuffer::State* state) {
*state = command_buffer_->GetState();
}
void GpuCommandBufferStub::OnAsyncGetState() {
gpu::CommandBuffer::State state = command_buffer_->GetState();
Send(new GpuCommandBufferMsg_UpdateState(route_id_, state));
}
void GpuCommandBufferStub::OnFlush(int32 put_offset,
gpu::CommandBuffer::State* state) {
*state = command_buffer_->Flush(put_offset);
}
void GpuCommandBufferStub::OnAsyncFlush(int32 put_offset) {
gpu::CommandBuffer::State state = command_buffer_->Flush(put_offset);
Send(new GpuCommandBufferMsg_UpdateState(route_id_, state));
}
void GpuCommandBufferStub::OnCreateTransferBuffer(int32 size, int32* id) {
*id = command_buffer_->CreateTransferBuffer(size);
}
void GpuCommandBufferStub::OnDestroyTransferBuffer(int32 id) {
command_buffer_->DestroyTransferBuffer(id);
}
void GpuCommandBufferStub::OnGetTransferBuffer(
int32 id,
base::SharedMemoryHandle* transfer_buffer,
uint32* size) {
*transfer_buffer = base::SharedMemoryHandle();
*size = 0;
Buffer buffer = command_buffer_->GetTransferBuffer(id);
if (buffer.shared_memory) {
// Assume service is responsible for duplicating the handle to the calling
// process.
buffer.shared_memory->ShareToProcess(channel_->renderer_handle(),
transfer_buffer);
*size = buffer.shared_memory->max_size();
}
}
void GpuCommandBufferStub::OnResizeOffscreenFrameBuffer(const gfx::Size& size) {
processor_->ResizeOffscreenFrameBuffer(size);
}
#endif // ENABLE_GPU
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