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// Copyright (c) 2009 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 "base/process_util.h"
#include "base/shared_memory.h"
#include "chrome/common/command_buffer_messages.h"
#include "chrome/plugin/command_buffer_stub.h"
#include "chrome/plugin/plugin_channel.h"
using gpu::Buffer;
CommandBufferStub::CommandBufferStub(PluginChannel* channel,
gfx::PluginWindowHandle window)
: channel_(channel),
window_(window) {
route_id_ = channel->GenerateRouteID();
channel->AddRoute(route_id_, this, false);
}
CommandBufferStub::~CommandBufferStub() {
channel_->RemoveRoute(route_id_);
}
void CommandBufferStub::OnChannelError() {
NOTREACHED() << "CommandBufferService::OnChannelError called";
}
bool CommandBufferStub::Send(IPC::Message* message) {
if (!channel_) {
delete message;
return false;
}
return channel_->Send(message);
}
void CommandBufferStub::OnInitialize(int32 size,
base::SharedMemoryHandle* ring_buffer) {
DCHECK(!command_buffer_.get());
*ring_buffer = base::SharedMemory::NULLHandle();
// Assume service is responsible for duplicating the handle from the calling
// process.
base::ProcessHandle peer_handle;
if (!base::OpenProcessHandle(channel_->peer_pid(), &peer_handle))
return;
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) {
processor_ = new gpu::GPUProcessor(command_buffer_.get());
if (processor_->Initialize(window_)) {
command_buffer_->SetPutOffsetChangeCallback(
NewCallback(processor_.get(),
&gpu::GPUProcessor::ProcessCommands));
buffer.shared_memory->ShareToProcess(peer_handle, ring_buffer);
} else {
processor_ = NULL;
command_buffer_.reset();
}
}
}
base::CloseProcessHandle(peer_handle);
}
void CommandBufferStub::OnGetState(gpu::CommandBuffer::State* state) {
*state = command_buffer_->GetState();
}
void CommandBufferStub::OnFlush(int32 put_offset,
gpu::CommandBuffer::State* state) {
*state = command_buffer_->Flush(put_offset);
}
void CommandBufferStub::OnCreateTransferBuffer(int32 size, int32* id) {
*id = command_buffer_->CreateTransferBuffer(size);
}
void CommandBufferStub::OnDestroyTransferBuffer(int32 id) {
command_buffer_->DestroyTransferBuffer(id);
}
void CommandBufferStub::OnGetTransferBuffer(
int32 id,
base::SharedMemoryHandle* transfer_buffer,
size_t* size) {
*transfer_buffer = base::SharedMemoryHandle();
*size = 0;
// Assume service is responsible for duplicating the handle to the calling
// process.
base::ProcessHandle peer_handle;
if (!base::OpenProcessHandle(channel_->peer_pid(), &peer_handle))
return;
Buffer buffer = command_buffer_->GetTransferBuffer(id);
if (buffer.shared_memory) {
buffer.shared_memory->ShareToProcess(peer_handle, transfer_buffer);
*size = buffer.shared_memory->max_size();
}
base::CloseProcessHandle(peer_handle);
}
void CommandBufferStub::OnMessageReceived(const IPC::Message& msg) {
IPC_BEGIN_MESSAGE_MAP(CommandBufferStub, msg)
IPC_MESSAGE_HANDLER(CommandBufferMsg_Initialize, OnInitialize);
IPC_MESSAGE_HANDLER(CommandBufferMsg_GetState, OnGetState);
IPC_MESSAGE_HANDLER(CommandBufferMsg_Flush, OnFlush);
IPC_MESSAGE_HANDLER(CommandBufferMsg_CreateTransferBuffer,
OnCreateTransferBuffer);
IPC_MESSAGE_HANDLER(CommandBufferMsg_DestroyTransferBuffer,
OnDestroyTransferBuffer);
IPC_MESSAGE_HANDLER(CommandBufferMsg_GetTransferBuffer,
OnGetTransferBuffer);
IPC_MESSAGE_UNHANDLED_ERROR()
IPC_END_MESSAGE_MAP()
}
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