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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/callback.h"
#include "base/scoped_open_process.h"
#include "base/shared_memory.h"
#include "chrome/common/gpu_messages.h"
#include "chrome/common/plugin_messages.h"
#include "chrome/plugin/command_buffer_stub.h"
#include "chrome/plugin/plugin_channel.h"
using gpu::Buffer;
CommandBufferStub::CommandBufferStub(PluginChannel* channel,
int plugin_host_route_id,
gfx::PluginWindowHandle window)
: channel_(channel),
plugin_host_route_id_(plugin_host_route_id),
window_(window) {
route_id_ = channel->GenerateRouteID();
channel->AddRoute(route_id_, this, NULL);
}
CommandBufferStub::~CommandBufferStub() {
Destroy();
channel_->RemoveRoute(route_id_);
}
bool CommandBufferStub::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(CommandBufferStub, 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);
#if defined(OS_MACOSX)
IPC_MESSAGE_HANDLER(GpuCommandBufferMsg_SetWindowSize, OnSetWindowSize);
#endif
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
DCHECK(handled);
return handled;
}
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::NotifyRepaint() {
Send(new GpuCommandBufferMsg_NotifyRepaint(route_id_));
}
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::ScopedOpenProcess peer_process;
if (!peer_process.Open(channel_->peer_pid()))
return;
command_buffer_.reset(new gpu::CommandBufferService);
// Initialize the CommandBufferService.
if (!command_buffer_->Initialize(size)) {
Destroy();
return;
}
// Get the ring buffer.
Buffer buffer = command_buffer_->GetRingBuffer();
if (!buffer.shared_memory) {
Destroy();
return;
}
// Initialize the GPUProcessor.
processor_.reset(new gpu::GPUProcessor(command_buffer_.get(), NULL));
if (!processor_->Initialize(window_, gfx::Size(), NULL, std::vector<int32>(),
NULL, 0)) {
Destroy();
return;
}
// Perform platform specific initialization.
if (!InitializePlatformSpecific()) {
Destroy();
return;
}
// Share the ring buffer to the client process.
if (!buffer.shared_memory->ShareToProcess(peer_process.handle(),
ring_buffer)) {
Destroy();
return;
}
// Setup callbacks for events.
command_buffer_->SetPutOffsetChangeCallback(
NewCallback(processor_.get(),
&gpu::GPUProcessor::ProcessCommands));
#if defined(OS_MACOSX)
processor_->SetSwapBuffersCallback(
NewCallback(this,
&CommandBufferStub::SwapBuffersCallback));
processor_->SetTransportDIBAllocAndFree(
NewCallback(this, &CommandBufferStub::AllocTransportDIB),
NewCallback(this, &CommandBufferStub::FreeTransportDIB));
#endif
}
void CommandBufferStub::OnGetState(gpu::CommandBuffer::State* state) {
*state = command_buffer_->GetState();
}
void CommandBufferStub::OnAsyncGetState() {
gpu::CommandBuffer::State state = command_buffer_->GetState();
Send(new GpuCommandBufferMsg_UpdateState(route_id_, state));
}
void CommandBufferStub::OnFlush(int32 put_offset,
gpu::CommandBuffer::State* state) {
*state = command_buffer_->FlushSync(put_offset);
}
void CommandBufferStub::OnAsyncFlush(int32 put_offset) {
gpu::CommandBuffer::State state = command_buffer_->FlushSync(put_offset);
Send(new GpuCommandBufferMsg_UpdateState(route_id_, state));
}
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,
uint32* 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->created_size();
}
base::CloseProcessHandle(peer_handle);
}
void CommandBufferStub::Destroy() {
processor_.reset();
command_buffer_.reset();
DestroyPlatformSpecific();
}
#if !defined(OS_WIN)
bool CommandBufferStub::InitializePlatformSpecific() {
return true;
}
void CommandBufferStub::DestroyPlatformSpecific() {
}
#endif // defined(OS_WIN)
#if defined(OS_MACOSX)
void CommandBufferStub::OnSetWindowSize(const gfx::Size& size) {
// Try using the IOSurface version first.
bool notify_repaint = false;
uint64 new_backing_store = processor_->SetWindowSizeForIOSurface(size);
if (new_backing_store) {
Send(new PluginHostMsg_AcceleratedSurfaceSetIOSurface(
plugin_host_route_id_,
window_,
size.width(),
size.height(),
new_backing_store));
notify_repaint = true;
} else {
// If |new_backing_store| is 0, it might mean that the IOSurface APIs are
// not available. In this case, see if TransportDIBs are supported.
TransportDIB::Handle transport_dib =
processor_->SetWindowSizeForTransportDIB(size);
if (TransportDIB::is_valid(transport_dib)) {
Send(new PluginHostMsg_AcceleratedSurfaceSetTransportDIB(
plugin_host_route_id_,
window_,
size.width(),
size.height(),
transport_dib));
notify_repaint = true;
}
}
if (notify_repaint) {
// Indicate to the client that at least one repaint is needed.
NotifyRepaint();
}
}
void CommandBufferStub::SwapBuffersCallback() {
Send(new PluginHostMsg_AcceleratedSurfaceBuffersSwapped(
plugin_host_route_id_, window_, processor_->GetSurfaceId()));
}
void CommandBufferStub::AllocTransportDIB(const size_t size,
TransportDIB::Handle* dib_handle) {
Send(new PluginHostMsg_AllocTransportDIB(plugin_host_route_id_,
size,
dib_handle));
}
void CommandBufferStub::FreeTransportDIB(TransportDIB::Id dib_id) {
Send(new PluginHostMsg_FreeTransportDIB(plugin_host_route_id_,
dib_id));
}
#endif
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