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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,
IPC::Message::Sender* ipc_sender,
int context_route_id)
: gpu_video_service_host_(service_host),
ipc_sender_(ipc_sender),
context_route_id_(context_route_id),
event_handler_(NULL),
buffer_id_serial_(0),
state_(kStateUninitialized),
input_buffer_busy_(false) {
memset(&config_, 0, sizeof(config_));
memset(&done_param_, 0, sizeof(done_param_));
}
void GpuVideoDecoderHost::OnChannelError() {
ipc_sender_ = 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_UNHANDLED_ERROR()
IPC_END_MESSAGE_MAP()
}
void GpuVideoDecoderHost::Initialize(
MessageLoop* message_loop, VideoDecodeEngine::EventHandler* event_handler,
media::VideoDecodeContext* context, const media::VideoCodecConfig& config) {
// TODO(hclam): Call |event_handler| here.
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): This create video decoder operation is synchronous, need to
// make it asynchronous.
decoder_info_.context_id = context_route_id_;
if (!ipc_sender_->Send(
new GpuChannelMsg_CreateVideoDecoder(&decoder_info_))) {
LOG(ERROR) << "GpuChannelMsg_CreateVideoDecoder failed";
return;
}
// Add the route so we'll receive messages.
gpu_video_service_host_->AddRoute(my_route_id(), this);
// Save the configuration parameters.
config_ = config;
// TODO(hclam): Initialize |param| with the right values.
GpuVideoDecoderInitParam param;
param.width = config.width;
param.height = config.height;
if (!ipc_sender_ || !ipc_sender_->Send(
new GpuVideoDecoderMsg_Initialize(route_id(), param))) {
LOG(ERROR) << "GpuVideoDecoderMsg_Initialize failed";
return;
}
}
void GpuVideoDecoderHost::ConsumeVideoSample(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::ProduceVideoFrame(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;
// TODO(hclam): We should keep an IDMap to convert between a frame a buffer
// ID so that we can signal GpuVideoDecoder in GPU process to use the buffer.
// This eliminates one conversion step.
}
void GpuVideoDecoderHost::Uninitialize() {
if (!ipc_sender_ || !ipc_sender_->Send(
new GpuVideoDecoderMsg_Destroy(route_id()))) {
LOG(ERROR) << "GpuVideoDecoderMsg_Destroy failed";
return;
}
gpu_video_service_host_->RemoveRoute(my_route_id());
return;
}
void GpuVideoDecoderHost::Flush() {
state_ = kStateFlushing;
if (!ipc_sender_ || !ipc_sender_->Send(
new GpuVideoDecoderMsg_Flush(route_id()))) {
LOG(ERROR) << "GpuVideoDecoderMsg_Flush failed";
return;
}
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;
}
void GpuVideoDecoderHost::Seek() {
// TODO(hclam): Implement.
}
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;
success = true;
} while (0);
state_ = success ? kStateNormal : kStateError;
media::VideoCodecInfo info;
info.success = success;
// TODO(hclam): There's too many unnecessary copies for width and height!
// Need to clean it up.
// TODO(hclam): Need to fill in more information.
info.stream_info.surface_width = config_.width;
info.stream_info.surface_height = config_.height;
event_handler_->OnInitializeComplete(info);
}
void GpuVideoDecoderHost::OnUninitializeDone() {
input_transfer_buffer_.reset();
event_handler_->OnUninitializeComplete();
}
void GpuVideoDecoderHost::OnFlushDone() {
state_ = kStateNormal;
event_handler_->OnFlushComplete();
}
void GpuVideoDecoderHost::OnEmptyThisBufferDone() {
event_handler_->ProduceVideoSample(NULL);
}
void GpuVideoDecoderHost::OnConsumeVideoFrame(int32 frame_id, int64 timestamp,
int64 duration, int32 flags) {
scoped_refptr<VideoFrame> frame;
if (flags & kGpuVideoEndOfStream) {
VideoFrame::CreateEmptyFrame(&frame);
} else {
// TODO(hclam): Use |frame_id| to find the VideoFrame.
}
// TODO(hclam): Call the event handler.
event_handler_->ConsumeVideoFrame(frame);
}
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 (!ipc_sender_ || !ipc_sender_->Send(
new GpuVideoDecoderMsg_EmptyThisBuffer(route_id(), param))) {
LOG(ERROR) << "GpuVideoDecoderMsg_EmptyThisBuffer failed";
}
}
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