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// Copyright (c) 2012 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.
#ifndef CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
#define CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
#include <map>
#include <vector>
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/memory/shared_memory.h"
#include "base/synchronization/waitable_event.h"
#include "content/common/gpu/gpu_command_buffer_stub.h"
#include "gpu/command_buffer/service/texture_manager.h"
#include "gpu/config/gpu_info.h"
#include "ipc/ipc_listener.h"
#include "ipc/ipc_sender.h"
#include "media/video/video_decode_accelerator.h"
#include "ui/gfx/geometry/size.h"
struct AcceleratedVideoDecoderMsg_Decode_Params;
namespace content {
class GpuVideoDecodeAccelerator
: public IPC::Listener,
public IPC::Sender,
public media::VideoDecodeAccelerator::Client,
public GpuCommandBufferStub::DestructionObserver {
public:
// Each of the arguments to the constructor must outlive this object.
// |stub->decoder()| will be made current around any operation that touches
// the underlying VDA so that it can make GL calls safely.
GpuVideoDecodeAccelerator(
int32 host_route_id,
GpuCommandBufferStub* stub,
const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
// IPC::Listener implementation.
bool OnMessageReceived(const IPC::Message& message) override;
// media::VideoDecodeAccelerator::Client implementation.
void ProvidePictureBuffers(uint32 requested_num_of_buffers,
const gfx::Size& dimensions,
uint32 texture_target) override;
void DismissPictureBuffer(int32 picture_buffer_id) override;
void PictureReady(const media::Picture& picture) override;
void NotifyError(media::VideoDecodeAccelerator::Error error) override;
void NotifyEndOfBitstreamBuffer(int32 bitstream_buffer_id) override;
void NotifyFlushDone() override;
void NotifyResetDone() override;
// GpuCommandBufferStub::DestructionObserver implementation.
void OnWillDestroyStub() override;
// Function to delegate sending to actual sender.
bool Send(IPC::Message* message) override;
// Initialize VDAs from the set of VDAs supported for current platform until
// one of them succeeds for given |profile|. Send the |init_done_msg| when
// done. filter_ is passed to GpuCommandBufferStub channel only if the chosen
// VDA can decode on IO thread.
void Initialize(const media::VideoCodecProfile profile,
IPC::Message* init_done_msg);
// Static query for supported profiles. This query calls the appropriate
// platform-specific version. The returned supported profiles vector will
// not contain duplicates.
static gpu::VideoDecodeAcceleratorSupportedProfiles GetSupportedProfiles();
private:
typedef scoped_ptr<media::VideoDecodeAccelerator>(
GpuVideoDecodeAccelerator::*CreateVDAFp)();
class MessageFilter;
scoped_ptr<media::VideoDecodeAccelerator> CreateDXVAVDA();
scoped_ptr<media::VideoDecodeAccelerator> CreateV4L2VDA();
scoped_ptr<media::VideoDecodeAccelerator> CreateV4L2SliceVDA();
scoped_ptr<media::VideoDecodeAccelerator> CreateVaapiVDA();
scoped_ptr<media::VideoDecodeAccelerator> CreateVTVDA();
scoped_ptr<media::VideoDecodeAccelerator> CreateOzoneVDA();
scoped_ptr<media::VideoDecodeAccelerator> CreateAndroidVDA();
// We only allow self-delete, from OnWillDestroyStub(), after cleanup there.
~GpuVideoDecodeAccelerator() override;
// Handlers for IPC messages.
void OnDecode(const AcceleratedVideoDecoderMsg_Decode_Params& params);
void OnAssignPictureBuffers(const std::vector<int32>& buffer_ids,
const std::vector<uint32>& texture_ids);
void OnReusePictureBuffer(int32 picture_buffer_id);
void OnFlush();
void OnReset();
void OnDestroy();
// Called on IO thread when |filter_| has been removed.
void OnFilterRemoved();
// Sets the texture to cleared.
void SetTextureCleared(const media::Picture& picture);
// Helper for replying to the creation request.
void SendCreateDecoderReply(IPC::Message* message, bool succeeded);
// Helper to bind |image| to the texture specified by |client_texture_id|.
void BindImage(uint32 client_texture_id,
uint32 texture_target,
scoped_refptr<gl::GLImage> image);
// Route ID to communicate with the host.
const int32 host_route_id_;
// Unowned pointer to the underlying GpuCommandBufferStub. |this| is
// registered as a DestuctionObserver of |stub_| and will self-delete when
// |stub_| is destroyed.
GpuCommandBufferStub* const stub_;
// The underlying VideoDecodeAccelerator.
scoped_ptr<media::VideoDecodeAccelerator> video_decode_accelerator_;
// Callback for making the relevant context current for GL calls.
// Returns false if failed.
base::Callback<bool(void)> make_context_current_;
// The texture dimensions as requested by ProvidePictureBuffers().
gfx::Size texture_dimensions_;
// The texture target as requested by ProvidePictureBuffers().
uint32 texture_target_;
// The message filter to run VDA::Decode on IO thread if VDA supports it.
scoped_refptr<MessageFilter> filter_;
// Used to wait on for |filter_| to be removed, before we can safely
// destroy the VDA.
base::WaitableEvent filter_removed_;
// GPU child thread task runner.
const scoped_refptr<base::SingleThreadTaskRunner> child_task_runner_;
// GPU IO thread task runner.
const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
// Weak pointers will be invalidated on IO thread.
base::WeakPtrFactory<Client> weak_factory_for_io_;
// Protects |uncleared_textures_| when DCHECK is on. This is for debugging
// only. We don't want to hold a lock on IO thread. When DCHECK is off,
// |uncleared_textures_| is only accessed from the child thread.
base::Lock debug_uncleared_textures_lock_;
// A map from picture buffer ID to TextureRef that have not been cleared.
std::map<int32, scoped_refptr<gpu::gles2::TextureRef> > uncleared_textures_;
DISALLOW_IMPLICIT_CONSTRUCTORS(GpuVideoDecodeAccelerator);
};
} // namespace content
#endif // CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
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