Add support for Tegra V4L2 VDA

content/common/gpu/media/v4l2_video_decode_accelerator.h

 // Copyright 2014 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 VideoDecodeAccelerator
 // that utilizes hardware video decoders, which expose Video4Linux 2 API
 // (http://linuxtv.org/downloads/v4l-dvb-apis/).
 
 #ifndef CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_
 #define CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_
 
 #include <queue>
 #include <vector>
+#include <linux/videodev2.h>
 
 #include "base/callback_forward.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
 #include "content/common/content_export.h"
 #include "content/common/gpu/media/v4l2_video_device.h"
 #include "content/common/gpu/media/video_decode_accelerator_impl.h"
 #include "media/base/limits.h"
@@ skipping 395 matching lines @@
 
   // Make our context current before running any EGL entry points.
   base::Callback<bool(void)> make_context_current_;
 
   // EGL state
   EGLDisplay egl_display_;
 
   // The codec we'll be decoding for.
   media::VideoCodecProfile video_profile_;
 
+  // Stores the current format. This is used to check against
+  // the format received when we dequeue a RESOLUTION_CHANGE event.
+  // Resolution change sequence is only executed if the new format is different
+  // than the current_format_.
+  struct v4l2_format current_format_;
+
   DISALLOW_COPY_AND_ASSIGN(V4L2VideoDecodeAccelerator);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_MEDIA_V4L2_VIDEO_DECODE_ACCELERATOR_H_