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>
 
 #include <memory>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "media/filters/vp9_parser.h"
 #include "media/gpu/accelerated_video_decoder.h"
 #include "media/gpu/vp9_picture.h"
+#include "ui/gfx/geometry/rect.h"
 
 namespace media {
 
 // This class implements an AcceleratedVideoDecoder for VP9 decoding.
 // Clients of this class are expected to pass raw VP9 stream and are expected
 // to provide an implementation of VP9Accelerator for offloading final steps
 // of the decoding process.
 //
 // This class must be created, called and destroyed on a single thread, and
 // does nothing internally on any other thread.
@@ skipping 39 matching lines @@
     // Schedule output (display) of |pic|.
     //
     // Note that returning from this method does not mean that |pic| has already
     // been outputted (displayed), but guarantees that all pictures will be
     // outputted in the same order as this method was called for them, and that
     // they are decoded before outputting (assuming SubmitDecode() has been
     // called for them beforehand). Decoder may drop its references to |pic|
     // immediately after calling this method.
     //
     // Return true when successful, false otherwise.
-    virtual bool OutputPicture(const scoped_refptr<VP9Picture>& pic) = 0;
+    virtual bool OutputPicture(const scoped_refptr<VP9Picture>& pic,
+                               const gfx::Rect& visible_rect) = 0;
 
     // Return true if the accelerator requires the client to provide frame
     // context in order to decode. If so, the Vp9FrameHeader provided by the
     // client must contain a valid compressed header and frame context data.
     virtual bool IsFrameContextRequired() const = 0;
 
     // Set |frame_ctx| to the state after decoding |pic|, returning true on
     // success, false otherwise.
     virtual bool GetFrameContext(const scoped_refptr<VP9Picture>& pic,
                                  Vp9FrameContext* frame_ctx) = 0;
@@ skipping 42 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_