| // Copyright 2018 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 MEDIA_GPU_DECODE_SURFACE_HANDLER_H_ |
| #define MEDIA_GPU_DECODE_SURFACE_HANDLER_H_ |
| |
| #include "base/memory/scoped_refptr.h" |
| |
| namespace gfx { |
| class Rect; |
| } |
| |
| namespace media { |
| |
| class VideoColorSpace; |
| |
| // Interface representing {V4L2,Vaapi}DecodeSurface operations, i.e. a client |
| // gets a T to work with by calling CreateSurface() and returns it when finished |
| // by calling SurfaceReady(). Class T has to be ref-counted. No assumptions are |
| // made about threading. |
| template <class T> |
| class DecodeSurfaceHandler { |
| public: |
| DecodeSurfaceHandler() = default; |
| virtual ~DecodeSurfaceHandler() = default; |
| |
| // Returns a T for decoding into, if available, or nullptr. |
| virtual scoped_refptr<T> CreateSurface() = 0; |
| |
| // Called by the client to indicate that |dec_surface| is ready to be |
| // outputted. This can actually be called before decode is finished in |
| // hardware; this method must guarantee that |dec_surface|s are processed in |
| // the same order as SurfaceReady is called. (On Intel, this order doesn't |
| // need to be explicitly maintained since the driver will enforce it, together |
| // with any necessary dependencies). |
| virtual void SurfaceReady(scoped_refptr<T> dec_surface, |
| int32_t bitstream_id, |
| const gfx::Rect& visible_rect, |
| const VideoColorSpace& color_space) = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DecodeSurfaceHandler); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_GPU_DECODE_SURFACE_HANDLER_H_ |