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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.
#include "chrome/renderer/gpu_video_decoder_host.h"
#include "chrome/common/gpu_messages.h"
#include "chrome/renderer/gpu_video_service_host.h"
#include "chrome/renderer/render_thread.h"
GpuVideoDecoderHost::GpuVideoDecoderHost(GpuVideoServiceHost* service_host,
GpuChannelHost* channel_host,
int context_route_id)
: gpu_video_service_host_(service_host),
channel_host_(channel_host),
context_route_id_(context_route_id),
event_handler_(NULL),
buffer_id_serial_(0),
state_(kStateUninitialized),
input_buffer_busy_(false) {
memset(&init_param_, 0, sizeof(init_param_));
memset(&done_param_, 0, sizeof(done_param_));
}
void GpuVideoDecoderHost::OnChannelError() {
channel_host_ = NULL;
}
void GpuVideoDecoderHost::OnMessageReceived(const IPC::Message& msg) {
IPC_BEGIN_MESSAGE_MAP(GpuVideoDecoderHost, msg)
IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_InitializeACK,
OnInitializeDone)
IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_DestroyACK,
OnUninitializeDone)
IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_FlushACK,
OnFlushDone)
IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_EmptyThisBufferACK,
OnEmptyThisBufferACK)
IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_EmptyThisBufferDone,
OnEmptyThisBufferDone)
IPC_MESSAGE_HANDLER(GpuVideoDecoderHostMsg_FillThisBufferDone,
OnFillThisBufferDone)
IPC_MESSAGE_UNHANDLED_ERROR()
IPC_END_MESSAGE_MAP()
}
bool GpuVideoDecoderHost::Initialize(EventHandler* event_handler,
const GpuVideoDecoderInitParam& param) {
DCHECK_EQ(state_, kStateUninitialized);
// Save the event handler before we perform initialization operations so
// that we can report initialization events.
event_handler_ = event_handler;
// TODO(hclam): Pass the context route ID here.
// TODO(hclam): This create video decoder operation is synchronous, need to
// make it asynchronous.
decoder_info_.context_id = context_route_id_;
if (!channel_host_->Send(
new GpuChannelMsg_CreateVideoDecoder(&decoder_info_))) {
LOG(ERROR) << "GpuChannelMsg_CreateVideoDecoder failed";
return false;
}
// Add the route so we'll receive messages.
gpu_video_service_host_->AddRoute(my_route_id(), this);
init_param_ = param;
if (!channel_host_ || !channel_host_->Send(
new GpuVideoDecoderMsg_Initialize(route_id(), param))) {
LOG(ERROR) << "GpuVideoDecoderMsg_Initialize failed";
return false;
}
return true;
}
bool GpuVideoDecoderHost::Uninitialize() {
if (!channel_host_ || !channel_host_->Send(
new GpuVideoDecoderMsg_Destroy(route_id()))) {
LOG(ERROR) << "GpuVideoDecoderMsg_Destroy failed";
return false;
}
gpu_video_service_host_->RemoveRoute(my_route_id());
return true;
}
void GpuVideoDecoderHost::EmptyThisBuffer(scoped_refptr<Buffer> buffer) {
DCHECK_NE(state_, kStateUninitialized);
DCHECK_NE(state_, kStateFlushing);
// We never own input buffers, therefore when client in flush state, it
// never call us with EmptyThisBuffer.
if (state_ != kStateNormal)
return;
input_buffer_queue_.push_back(buffer);
SendInputBufferToGpu();
}
void GpuVideoDecoderHost::FillThisBuffer(scoped_refptr<VideoFrame> frame) {
DCHECK_NE(state_, kStateUninitialized);
// Depends on who provides buffer. client could return buffer to
// us while flushing.
if (state_ == kStateError)
return;
GpuVideoDecoderOutputBufferParam param;
if (!channel_host_ || !channel_host_->Send(
new GpuVideoDecoderMsg_FillThisBuffer(route_id(), param))) {
LOG(ERROR) << "GpuVideoDecoderMsg_FillThisBuffer failed";
}
}
bool GpuVideoDecoderHost::Flush() {
state_ = kStateFlushing;
if (!channel_host_ || !channel_host_->Send(
new GpuVideoDecoderMsg_Flush(route_id()))) {
LOG(ERROR) << "GpuVideoDecoderMsg_Flush failed";
return false;
}
input_buffer_queue_.clear();
// TODO(jiesun): because GpuVideoDeocder/GpuVideoDecoder are asynchronously.
// We need a way to make flush logic more clear. but I think ring buffer
// should make the busy flag obsolete, therefore I will leave it for now.
input_buffer_busy_ = false;
return true;
}
void GpuVideoDecoderHost::OnInitializeDone(
const GpuVideoDecoderInitDoneParam& param) {
done_param_ = param;
bool success = false;
do {
if (!param.success_)
break;
if (!base::SharedMemory::IsHandleValid(param.input_buffer_handle_))
break;
input_transfer_buffer_.reset(
new base::SharedMemory(param.input_buffer_handle_, false));
if (!input_transfer_buffer_->Map(param.input_buffer_size_))
break;
if (!base::SharedMemory::IsHandleValid(param.output_buffer_handle_))
break;
output_transfer_buffer_.reset(
new base::SharedMemory(param.output_buffer_handle_, false));
if (!output_transfer_buffer_->Map(param.output_buffer_size_))
break;
success = true;
} while (0);
state_ = success ? kStateNormal : kStateError;
event_handler_->OnInitializeDone(success, param);
}
void GpuVideoDecoderHost::OnUninitializeDone() {
input_transfer_buffer_.reset();
output_transfer_buffer_.reset();
event_handler_->OnUninitializeDone();
}
void GpuVideoDecoderHost::OnFlushDone() {
state_ = kStateNormal;
event_handler_->OnFlushDone();
}
void GpuVideoDecoderHost::OnEmptyThisBufferDone() {
scoped_refptr<Buffer> buffer;
event_handler_->OnEmptyBufferDone(buffer);
}
void GpuVideoDecoderHost::OnFillThisBufferDone(
const GpuVideoDecoderOutputBufferParam& param) {
scoped_refptr<VideoFrame> frame;
if (param.flags_ & GpuVideoDecoderOutputBufferParam::kFlagsEndOfStream) {
VideoFrame::CreateEmptyFrame(&frame);
} else {
VideoFrame::CreateFrame(VideoFrame::YV12,
init_param_.width_,
init_param_.height_,
base::TimeDelta::FromMicroseconds(param.timestamp_),
base::TimeDelta::FromMicroseconds(param.duration_),
&frame);
uint8* src = static_cast<uint8*>(output_transfer_buffer_->memory());
uint8* data0 = frame->data(0);
uint8* data1 = frame->data(1);
uint8* data2 = frame->data(2);
int32 size = init_param_.width_ * init_param_.height_;
memcpy(data0, src, size);
memcpy(data1, src + size, size / 4);
memcpy(data2, src + size + size / 4, size / 4);
}
event_handler_->OnFillBufferDone(frame);
if (!channel_host_ || !channel_host_->Send(
new GpuVideoDecoderMsg_FillThisBufferDoneACK(route_id()))) {
LOG(ERROR) << "GpuVideoDecoderMsg_FillThisBufferDoneACK failed";
}
}
void GpuVideoDecoderHost::OnEmptyThisBufferACK() {
input_buffer_busy_ = false;
SendInputBufferToGpu();
}
void GpuVideoDecoderHost::SendInputBufferToGpu() {
if (input_buffer_busy_) return;
if (input_buffer_queue_.empty()) return;
input_buffer_busy_ = true;
scoped_refptr<Buffer> buffer;
buffer = input_buffer_queue_.front();
input_buffer_queue_.pop_front();
// Send input data to GPU process.
GpuVideoDecoderInputBufferParam param;
param.offset_ = 0;
param.size_ = buffer->GetDataSize();
param.timestamp_ = buffer->GetTimestamp().InMicroseconds();
memcpy(input_transfer_buffer_->memory(), buffer->GetData(), param.size_);
if (!channel_host_ || !channel_host_->Send(
new GpuVideoDecoderMsg_EmptyThisBuffer(route_id(), param))) {
LOG(ERROR) << "GpuVideoDecoderMsg_EmptyThisBuffer failed";
}
}
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