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

media/gpu/vaapi_video_decode_accelerator.h

 // 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.
 //
 // This file contains an implementation of VideoDecoderAccelerator
 // that utilizes hardware video decoder present on Intel CPUs.
 
 #ifndef MEDIA_GPU_VAAPI_VIDEO_DECODE_ACCELERATOR_H_
 #define MEDIA_GPU_VAAPI_VIDEO_DECODE_ACCELERATOR_H_
 
@@ skipping 127 matching lines @@
 
   // Helper for Destroy(), doing all the actual work except for deleting self.
   void Cleanup();
 
   // Get a usable framebuffer configuration for use in binding textures
   // or return false on failure.
   bool InitializeFBConfig();
 
   // Callback to be executed once we have a |va_surface| to be output and
   // an available |picture| to use for output.
-  // Puts contents of |va_surface| into given |picture|, releases the
-  // surface and passes the resulting picture to client for output.
+  // Puts contents of |va_surface| into given |picture|, releases the surface
+  // and passes the resulting picture to client to output the given
+  // |visible_rect| part of it.
   void OutputPicture(const scoped_refptr<VASurface>& va_surface,
                      int32_t input_id,
+                     gfx::Rect visible_rect,
                      VaapiPicture* picture);
 
   // Try to OutputPicture() if we have both a ready surface and picture.
   void TryOutputSurface();
 
   // Called when a VASurface is no longer in use by the decoder or is not being
   // synced/waiting to be synced to a picture. Returns it to available surfaces
   // pool.
   void RecycleVASurfaceID(VASurfaceID va_surface_id);
 
@@ skipping 157 matching lines @@
 
   // The WeakPtrFactory for |weak_this_|.
   base::WeakPtrFactory<VaapiVideoDecodeAccelerator> weak_this_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(VaapiVideoDecodeAccelerator);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_GPU_VAAPI_VIDEO_DECODE_ACCELERATOR_H_