content/common/gpu/media/gpu_video_decode_accelerator.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
   6 #define CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_
   7
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/compiler_specific.h"
  12 #include "base/memory/ref_counted.h"
  13 #include "base/memory/shared_memory.h"
  14 #include "base/synchronization/waitable_event.h"
  15 #include "content/common/gpu/gpu_command_buffer_stub.h"
  16 #include "gpu/command_buffer/service/texture_manager.h"
  17 #include "gpu/config/gpu_info.h"
  18 #include "ipc/ipc_listener.h"
  19 #include "ipc/ipc_sender.h"
  20 #include "media/video/video_decode_accelerator.h"
  21 #include "ui/gfx/geometry/size.h"
  22
  23 namespace content {
  24
  25 class GpuVideoDecodeAccelerator
  26     : public IPC::Listener,
  27       public IPC::Sender,
  28       public media::VideoDecodeAccelerator::Client,
  29       public GpuCommandBufferStub::DestructionObserver {
  30  public:
  31   // Each of the arguments to the constructor must outlive this object.
  32   // |stub->decoder()| will be made current around any operation that touches
  33   // the underlying VDA so that it can make GL calls safely.
  34   GpuVideoDecodeAccelerator(
  35       int32 host_route_id,
  36       GpuCommandBufferStub* stub,
  37       const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
  38
  39   // IPC::Listener implementation.
  40   bool OnMessageReceived(const IPC::Message& message) override;
  41
  42   // media::VideoDecodeAccelerator::Client implementation.
  43   void ProvidePictureBuffers(uint32 requested_num_of_buffers,
  44                              const gfx::Size& dimensions,
  45                              uint32 texture_target) override;
  46   void DismissPictureBuffer(int32 picture_buffer_id) override;
  47   void PictureReady(const media::Picture& picture) override;
  48   void NotifyError(media::VideoDecodeAccelerator::Error error) override;
  49   void NotifyEndOfBitstreamBuffer(int32 bitstream_buffer_id) override;
  50   void NotifyFlushDone() override;
  51   void NotifyResetDone() override;
  52
  53   // GpuCommandBufferStub::DestructionObserver implementation.
  54   void OnWillDestroyStub() override;
  55
  56   // Function to delegate sending to actual sender.
  57   bool Send(IPC::Message* message) override;
  58
  59   // Initialize VDAs from the set of VDAs supported for current platform until
  60   // one of them succeeds for given |profile|. Send the |init_done_msg| when
  61   // done. filter_ is passed to GpuCommandBufferStub channel only if the chosen
  62   // VDA can decode on IO thread.
  63   void Initialize(const media::VideoCodecProfile profile,
  64                   IPC::Message* init_done_msg);
  65
  66   // Static query for supported profiles. This query calls the appropriate
  67   // platform-specific version. The returned supported profiles vector will
  68   // not contain duplicates.
  69   static gpu::VideoDecodeAcceleratorSupportedProfiles GetSupportedProfiles();
  70
  71  private:
  72   typedef scoped_ptr<media::VideoDecodeAccelerator>(
  73       GpuVideoDecodeAccelerator::*CreateVDAFp)();
  74
  75   class MessageFilter;
  76
  77   scoped_ptr<media::VideoDecodeAccelerator> CreateDXVAVDA();
  78   scoped_ptr<media::VideoDecodeAccelerator> CreateV4L2VDA();
  79   scoped_ptr<media::VideoDecodeAccelerator> CreateV4L2SliceVDA();
  80   scoped_ptr<media::VideoDecodeAccelerator> CreateVaapiVDA();
  81   scoped_ptr<media::VideoDecodeAccelerator> CreateVTVDA();
  82   scoped_ptr<media::VideoDecodeAccelerator> CreateOzoneVDA();
  83   scoped_ptr<media::VideoDecodeAccelerator> CreateAndroidVDA();
  84
  85   // We only allow self-delete, from OnWillDestroyStub(), after cleanup there.
  86   ~GpuVideoDecodeAccelerator() override;
  87
  88   // Handlers for IPC messages.
  89   void OnDecode(base::SharedMemoryHandle handle,
  90                 int32 id,
  91                 uint32 size,
  92                 base::TimeDelta presentation_timestamp);
  93   void OnAssignPictureBuffers(const std::vector<int32>& buffer_ids,
  94                               const std::vector<uint32>& texture_ids);
  95   void OnReusePictureBuffer(int32 picture_buffer_id);
  96   void OnFlush();
  97   void OnReset();
  98   void OnDestroy();
  99
 100   // Called on IO thread when |filter_| has been removed.
 101   void OnFilterRemoved();
 102
 103   // Sets the texture to cleared.
 104   void SetTextureCleared(const media::Picture& picture);
 105
 106   // Helper for replying to the creation request.
 107   void SendCreateDecoderReply(IPC::Message* message, bool succeeded);
 108
 109   // Helper to bind |image| to the texture specified by |client_texture_id|.
 110   void BindImage(uint32 client_texture_id,
 111                  uint32 texture_target,
 112                  scoped_refptr<gfx::GLImage> image);
 113
 114   // Route ID to communicate with the host.
 115   const int32 host_route_id_;
 116
 117   // Unowned pointer to the underlying GpuCommandBufferStub.  |this| is
 118   // registered as a DestuctionObserver of |stub_| and will self-delete when
 119   // |stub_| is destroyed.
 120   GpuCommandBufferStub* const stub_;
 121
 122   // The underlying VideoDecodeAccelerator.
 123   scoped_ptr<media::VideoDecodeAccelerator> video_decode_accelerator_;
 124
 125   // Callback for making the relevant context current for GL calls.
 126   // Returns false if failed.
 127   base::Callback<bool(void)> make_context_current_;
 128
 129   // The texture dimensions as requested by ProvidePictureBuffers().
 130   gfx::Size texture_dimensions_;
 131
 132   // The texture target as requested by ProvidePictureBuffers().
 133   uint32 texture_target_;
 134
 135   // The message filter to run VDA::Decode on IO thread if VDA supports it.
 136   scoped_refptr<MessageFilter> filter_;
 137
 138   // Used to wait on for |filter_| to be removed, before we can safely
 139   // destroy the VDA.
 140   base::WaitableEvent filter_removed_;
 141
 142   // GPU child thread task runner.
 143   const scoped_refptr<base::SingleThreadTaskRunner> child_task_runner_;
 144
 145   // GPU IO thread task runner.
 146   const scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 147
 148   // Weak pointers will be invalidated on IO thread.
 149   base::WeakPtrFactory<Client> weak_factory_for_io_;
 150
 151   // Protects |uncleared_textures_| when DCHECK is on. This is for debugging
 152   // only. We don't want to hold a lock on IO thread. When DCHECK is off,
 153   // |uncleared_textures_| is only accessed from the child thread.
 154   base::Lock debug_uncleared_textures_lock_;
 155
 156   // A map from picture buffer ID to TextureRef that have not been cleared.
 157   std::map<int32, scoped_refptr<gpu::gles2::TextureRef> > uncleared_textures_;
 158
 159   DISALLOW_IMPLICIT_CONSTRUCTORS(GpuVideoDecodeAccelerator);
 160 };
 161
 162 }  // namespace content
 163
 164 #endif  // CONTENT_COMMON_GPU_MEDIA_GPU_VIDEO_DECODE_ACCELERATOR_H_