Add stride for imported Dmabuf in ArcVideoAccelerator.

chrome/gpu/arc_video_accelerator.h

 // Copyright 2016 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 CHROME_GPU_ARC_VIDEO_ACCELERATOR_H_
 #define CHROME_GPU_ARC_VIDEO_ACCELERATOR_H_
 
 #include "base/files/scoped_file.h"
 
 namespace chromeos {
@@ skipping 104 matching lines @@
   virtual void BindSharedMemory(PortType port,
                                 uint32_t index,
                                 base::ScopedFD ashmem_fd,
                                 off_t offset,
                                 size_t length) = 0;
 
   // Assigns a buffer to be used for the accelerator at the specified
   // port and index. A buffer must be successfully bound before it can be
   // passed to the accelerator via UseBuffer(). Already bound buffers may be
   // reused multiple times without additional bindings.
   virtual void BindDmabuf(PortType port,

[Pawel Osciak, 2016/05/09 07:34:53]

Please add documentation for stride (esp. units).

[Owen Lin, 2016/05/11 01:39:59]

Done.

                           uint32_t index,
-                          base::ScopedFD dmabuf_fd) = 0;
+                          base::ScopedFD dmabuf_fd,
+                          int32_t stride) = 0;
 
   // Passes a buffer to the accelerator. For input buffer, the accelerator
   // will process it. For output buffer, the accelerator will output content
   // to it.
   virtual void UseBuffer(PortType port,
                          uint32_t index,
                          const BufferMetadata& metadata) = 0;
 
   // Sets the number of output buffers. When it fails, Client::OnError() will
   // be called.
   virtual void SetNumberOfOutputBuffers(size_t number) = 0;
 
   // Resets the accelerator. When it is done, Client::OnResetDone() will
   // be called. Afterwards, all buffers won't be accessed by the accelerator
   // and there won't be more callbacks.
   virtual void Reset() = 0;
 
   virtual ~ArcVideoAccelerator() {}
 };
 
 }  // namespace arc
 }  // namespace chromeos
 
 #endif  // CHROME_GPU_ARC_VIDEO_ACCELERATOR_H_