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// Copyright 2013 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 "content/common/gpu/media/gpu_video_encode_accelerator.h"
#include "base/callback.h"
#include "base/logging.h"
#include "base/memory/shared_memory.h"
#include "base/message_loop/message_loop_proxy.h"
#include "content/common/gpu/gpu_channel.h"
#include "content/common/gpu/gpu_messages.h"
#include "ipc/ipc_message_macros.h"
#include "media/base/video_frame.h"
namespace content {
GpuVideoEncodeAccelerator::GpuVideoEncodeAccelerator(GpuChannel* gpu_channel,
int32 route_id)
: weak_this_factory_(this),
channel_(gpu_channel),
route_id_(route_id),
input_format_(media::VideoFrame::INVALID),
output_buffer_size_(0) {}
GpuVideoEncodeAccelerator::~GpuVideoEncodeAccelerator() {
if (encoder_)
encoder_.release()->Destroy();
}
bool GpuVideoEncodeAccelerator::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(GpuVideoEncodeAccelerator, message)
IPC_MESSAGE_HANDLER(AcceleratedVideoEncoderMsg_Initialize, OnInitialize)
IPC_MESSAGE_HANDLER(AcceleratedVideoEncoderMsg_Encode, OnEncode)
IPC_MESSAGE_HANDLER(AcceleratedVideoEncoderMsg_UseOutputBitstreamBuffer,
OnUseOutputBitstreamBuffer)
IPC_MESSAGE_HANDLER(
AcceleratedVideoEncoderMsg_RequestEncodingParametersChange,
OnRequestEncodingParametersChange)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void GpuVideoEncodeAccelerator::OnChannelError() {
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
if (channel_)
channel_ = NULL;
}
void GpuVideoEncodeAccelerator::NotifyInitializeDone() {
Send(new AcceleratedVideoEncoderHostMsg_NotifyInitializeDone(route_id_));
}
void GpuVideoEncodeAccelerator::RequireBitstreamBuffers(
unsigned int input_count,
const gfx::Size& input_coded_size,
size_t output_buffer_size) {
Send(new AcceleratedVideoEncoderHostMsg_RequireBitstreamBuffers(
route_id_, input_count, input_coded_size, output_buffer_size));
input_coded_size_ = input_coded_size;
output_buffer_size_ = output_buffer_size;
}
void GpuVideoEncodeAccelerator::BitstreamBufferReady(int32 bitstream_buffer_id,
size_t payload_size,
bool key_frame) {
Send(new AcceleratedVideoEncoderHostMsg_BitstreamBufferReady(
route_id_, bitstream_buffer_id, payload_size, key_frame));
}
void GpuVideoEncodeAccelerator::NotifyError(
media::VideoEncodeAccelerator::Error error) {
Send(new AcceleratedVideoEncoderHostMsg_NotifyError(route_id_, error));
}
// static
std::vector<media::VideoEncodeAccelerator::SupportedProfile>
GpuVideoEncodeAccelerator::GetSupportedProfiles() {
std::vector<media::VideoEncodeAccelerator::SupportedProfile> profiles;
// TODO(sheu): return platform-specific profiles.
return profiles;
}
void GpuVideoEncodeAccelerator::CreateEncoder() {
// TODO(sheu): actual create the encoder.
}
void GpuVideoEncodeAccelerator::OnInitialize(
media::VideoFrame::Format input_format,
const gfx::Size& input_visible_size,
media::VideoCodecProfile output_profile,
uint32 initial_bitrate) {
DVLOG(2) << "GpuVideoEncodeAccelerator::OnInitialize(): "
"input_format=" << input_format
<< ", input_visible_size=" << input_visible_size.ToString()
<< ", output_profile=" << output_profile
<< ", initial_bitrate=" << initial_bitrate;
DCHECK(!encoder_);
if (input_visible_size.width() > kint32max / input_visible_size.height()) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::OnInitialize(): "
"input_visible_size too large";
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
CreateEncoder();
if (!encoder_) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::OnInitialize(): VEA creation "
"failed";
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
encoder_->Initialize(
input_format, input_visible_size, output_profile, initial_bitrate);
input_format_ = input_format;
input_visible_size_ = input_visible_size;
}
void GpuVideoEncodeAccelerator::OnEncode(int32 frame_id,
base::SharedMemoryHandle buffer_handle,
uint32 buffer_size,
bool force_keyframe) {
DVLOG(3) << "GpuVideoEncodeAccelerator::OnEncode(): frame_id=" << frame_id
<< ", buffer_size=" << buffer_size
<< ", force_keyframe=" << force_keyframe;
if (!encoder_)
return;
if (frame_id < 0) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::OnEncode(): invalid frame_id="
<< frame_id;
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
scoped_ptr<base::SharedMemory> shm(
new base::SharedMemory(buffer_handle, true));
if (!shm->Map(buffer_size)) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::OnEncode(): "
"could not map frame_id=" << frame_id;
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
scoped_refptr<media::VideoFrame> frame =
media::VideoFrame::WrapExternalSharedMemory(
media::VideoFrame::I420,
input_coded_size_,
gfx::Rect(input_visible_size_),
input_visible_size_,
reinterpret_cast<uint8*>(shm->memory()),
buffer_handle,
base::TimeDelta(),
// It's turtles all the way down...
base::Bind(base::IgnoreResult(&base::MessageLoopProxy::PostTask),
base::MessageLoopProxy::current(),
FROM_HERE,
base::Bind(&GpuVideoEncodeAccelerator::EncodeFrameFinished,
weak_this_factory_.GetWeakPtr(),
frame_id,
base::Passed(&shm))));
if (!frame) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::OnEncode(): "
"could not create VideoFrame for frame_id=" << frame_id;
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
encoder_->Encode(frame, force_keyframe);
}
void GpuVideoEncodeAccelerator::OnUseOutputBitstreamBuffer(
int32 buffer_id,
base::SharedMemoryHandle buffer_handle,
uint32 buffer_size) {
DVLOG(3) << "GpuVideoEncodeAccelerator::OnUseOutputBitstreamBuffer(): "
"buffer_id=" << buffer_id
<< ", buffer_size=" << buffer_size;
if (!encoder_)
return;
if (buffer_id < 0) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::OnUseOutputBitstreamBuffer(): "
"invalid buffer_id=" << buffer_id;
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
if (buffer_size < output_buffer_size_) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::OnUseOutputBitstreamBuffer(): "
"buffer too small for buffer_id=" << buffer_id;
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
encoder_->UseOutputBitstreamBuffer(
media::BitstreamBuffer(buffer_id, buffer_handle, buffer_size));
}
void GpuVideoEncodeAccelerator::OnRequestEncodingParametersChange(
uint32 bitrate,
uint32 framerate) {
DVLOG(2) << "GpuVideoEncodeAccelerator::OnRequestEncodingParametersChange(): "
"bitrate=" << bitrate
<< ", framerate=" << framerate;
if (!encoder_)
return;
encoder_->RequestEncodingParametersChange(bitrate, framerate);
}
void GpuVideoEncodeAccelerator::EncodeFrameFinished(
int32 frame_id,
scoped_ptr<base::SharedMemory> shm) {
Send(new AcceleratedVideoEncoderHostMsg_NotifyInputDone(route_id_, frame_id));
// Just let shm fall out of scope.
}
void GpuVideoEncodeAccelerator::Send(IPC::Message* message) {
if (!channel_) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::Send(): no channel";
delete message;
return;
} else if (!channel_->Send(message)) {
DLOG(ERROR) << "GpuVideoEncodeAccelerator::Send(): sending failed: "
"message->type()=" << message->type();
NotifyError(media::VideoEncodeAccelerator::kPlatformFailureError);
return;
}
}
} // namespace content
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