V4L2SVDA/VAAPIVDA: use visible size from decoder and pass to client

media/gpu/vp9_decoder.h

 // Copyright 2015 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_VP9_DECODER_H_
 #define MEDIA_GPU_VP9_DECODER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 83 matching lines @@
 
   explicit VP9Decoder(VP9Accelerator* accelerator);
   ~VP9Decoder() override;
 
   // AcceleratedVideoDecoder implementation.
   void SetStream(const uint8_t* ptr, size_t size) override;
   bool Flush() override WARN_UNUSED_RESULT;
   void Reset() override;
   DecodeResult Decode() override WARN_UNUSED_RESULT;
   gfx::Size GetPicSize() const override;
+  gfx::Rect GetVisibleRect() const override;
   size_t GetRequiredNumOfPictures() const override;
 
  private:
   // Update ref_frames_ based on the information in current frame header.
   void RefreshReferenceFrames(const scoped_refptr<VP9Picture>& pic);
 
   // Decode and possibly output |pic| (if the picture is to be shown).
   // Return true on success, false otherwise.
   bool DecodeAndOutputPicture(scoped_refptr<VP9Picture> pic);
 
@@ skipping 18 matching lines @@
   State state_;
 
   // Current frame header to be used in decoding the next picture.
   std::unique_ptr<Vp9FrameHeader> curr_frame_hdr_;
 
   // Reference frames currently in use.
   std::vector<scoped_refptr<VP9Picture>> ref_frames_;
 
   // Current coded resolution.
   gfx::Size pic_size_;
+  // Current render resolution.
+  gfx::Rect render_rect_;
 
   // VP9Accelerator instance owned by the client.
   VP9Accelerator* accelerator_;
 
   Vp9Parser parser_;
 
   DISALLOW_COPY_AND_ASSIGN(VP9Decoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_GPU_VP9_DECODER_H_