blob: 4d1e79f1e44d012aea975e5f33299e6baebba795 [file] [log] [blame]
// 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 <vector>
#include "base/containers/hash_tables.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/non_thread_safe.h"
#include "content/common/gpu/client/command_buffer_proxy_impl.h"
#include "gpu/config/gpu_info.h"
#include "ipc/ipc_listener.h"
#include "media/video/video_encode_accelerator.h"
namespace gfx {
class Size;
} // namespace gfx
namespace media {
class VideoFrame;
} // namespace media
namespace content {
class GpuChannelHost;
// This class is the renderer-side host for the VideoEncodeAccelerator in the
// GPU process, coordinated over IPC.
class GpuVideoEncodeAcceleratorHost
: public IPC::Listener,
public media::VideoEncodeAccelerator,
public CommandBufferProxyImpl::DeletionObserver,
public base::NonThreadSafe {
// |this| is guaranteed not to outlive |channel| and |impl|. (See comments
// for |channel_| and |impl_|.)
GpuVideoEncodeAcceleratorHost(GpuChannelHost* channel,
CommandBufferProxyImpl* impl);
// IPC::Listener implementation.
bool OnMessageReceived(const IPC::Message& message) override;
void OnChannelError() override;
// media::VideoEncodeAccelerator implementation.
SupportedProfiles GetSupportedProfiles() override;
bool Initialize(media::VideoFrame::Format input_format,
const gfx::Size& input_visible_size,
media::VideoCodecProfile output_profile,
uint32 initial_bitrate,
Client* client) override;
void Encode(const scoped_refptr<media::VideoFrame>& frame,
bool force_keyframe) override;
void UseOutputBitstreamBuffer(const media::BitstreamBuffer& buffer) override;
void RequestEncodingParametersChange(uint32 bitrate,
uint32 framerate_num) override;
void Destroy() override;
// CommandBufferProxyImpl::DeletionObserver implemetnation.
void OnWillDeleteImpl() override;
// Only Destroy() should be deleting |this|.
~GpuVideoEncodeAcceleratorHost() override;
// Notify |client_| of an error. Posts a task to avoid re-entrancy.
void PostNotifyError(Error);
void Send(IPC::Message* message);
// IPC handlers, proxying media::VideoEncodeAccelerator::Client for the GPU
// process. Should not be called directly.
void OnRequireBitstreamBuffers(uint32 input_count,
const gfx::Size& input_coded_size,
uint32 output_buffer_size);
void OnNotifyInputDone(int32 frame_id);
void OnBitstreamBufferReady(int32 bitstream_buffer_id,
uint32 payload_size,
bool key_frame);
void OnNotifyError(Error error);
// Unowned reference to the GpuChannelHost to send IPC messages to the GPU
// process. |channel_| outlives |impl_|, so the reference is always valid as
// long as it is not NULL.
GpuChannelHost* channel_;
// Route ID for the associated encoder in the GPU process.
int32 encoder_route_id_;
// The client that will receive callbacks from the encoder.
Client* client_;
// Unowned reference to the CommandBufferProxyImpl that created us. |this|
// registers as a DeletionObserver of |impl_|, so the reference is always
// valid as long as it is not NULL.
CommandBufferProxyImpl* impl_;
// media::VideoFrames sent to the encoder.
// base::IDMap not used here, since that takes pointers, not scoped_refptr.
typedef base::hash_map<int32, scoped_refptr<media::VideoFrame> > FrameMap;
FrameMap frame_map_;
// ID serial number for the next frame to send to the GPU process.
int32 next_frame_id_;
// WeakPtr factory for posting tasks back to itself.
base::WeakPtrFactory<GpuVideoEncodeAcceleratorHost> weak_this_factory_;
} // namespace content