Add accelerated video decoder interface, VP8 and H.264 implementations and hook up to V4L2SVDA.

content/common/gpu/media/vaapi_h264_dpb.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 an H.264 Decoded Picture Buffer
 // used in H264 decoders.
 
-#ifndef CONTENT_COMMON_GPU_MEDIA_H264_DPB_H_
-#define CONTENT_COMMON_GPU_MEDIA_H264_DPB_H_
+#ifndef CONTENT_COMMON_GPU_MEDIA_VAAPI_H264_DPB_H_
+#define CONTENT_COMMON_GPU_MEDIA_VAAPI_H264_DPB_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_vector.h"
 #include "media/filters/h264_parser.h"
 
 namespace content {
 
 // A picture (a frame or a field) in the H.264 spec sense.
 // See spec at http://www.itu.int/rec/T-REC-H.264
-struct H264Picture {
+struct VaapiH264Picture {
   enum Field {
     FIELD_NONE,
     FIELD_TOP,
     FIELD_BOTTOM,
   };
 
   // Values calculated per H.264 specification or taken from slice header.
   // See spec for more details on each (some names have been converted from
   // CamelCase in spec to Chromium-style names).
   int top_field_order_cnt;
@@ skipping 20 matching lines @@
 
   Field field;
 
   // Values from slice_hdr to be used during reference marking and
   // memory management after finishing this picture.
   bool long_term_reference_flag;
   bool adaptive_ref_pic_marking_mode_flag;
   media::H264DecRefPicMarking
       ref_pic_marking[media::H264SliceHeader::kRefListSize];
 
-  typedef std::vector<H264Picture*> PtrVector;
+  typedef std::vector<VaapiH264Picture*> PtrVector;
 };
 
 // DPB - Decoded Picture Buffer.
 // Stores decoded pictures that will be used for future display
 // and/or reference.
-class H264DPB {
+class VaapiH264DPB {
  public:
-  H264DPB();
-  ~H264DPB();
+  VaapiH264DPB();
+  ~VaapiH264DPB();
 
   void set_max_num_pics(size_t max_num_pics);
   size_t max_num_pics() { return max_num_pics_; }
 
   // Remove unused (not reference and already outputted) pictures from DPB
   // and free it.
   void DeleteUnused();
 
   // Remove a picture by its pic_order_cnt and free it.
   void DeleteByPOC(int poc);
 
   // Clear DPB.
   void Clear();
 
   // Store picture in DPB. DPB takes ownership of its resources.
-  void StorePic(H264Picture* pic);
+  void StorePic(VaapiH264Picture* pic);
 
   // Return the number of reference pictures in DPB.
   int CountRefPics();
 
   // Mark all pictures in DPB as unused for reference.
   void MarkAllUnusedForRef();
 
   // Return a short-term reference picture by its pic_num.
-  H264Picture* GetShortRefPicByPicNum(int pic_num);
+  VaapiH264Picture* GetShortRefPicByPicNum(int pic_num);
 
   // Return a long-term reference picture by its long_term_pic_num.
-  H264Picture* GetLongRefPicByLongTermPicNum(int pic_num);
+  VaapiH264Picture* GetLongRefPicByLongTermPicNum(int pic_num);
 
   // Return the short reference picture with lowest frame_num. Used for sliding
   // window memory management.
-  H264Picture* GetLowestFrameNumWrapShortRefPic();
+  VaapiH264Picture* GetLowestFrameNumWrapShortRefPic();
 
   // Append all pictures that have not been outputted yet to the passed |out|
   // vector, sorted by lowest pic_order_cnt (in output order).
-  void GetNotOutputtedPicsAppending(H264Picture::PtrVector& out);
+  void GetNotOutputtedPicsAppending(VaapiH264Picture::PtrVector& out);
 
   // Append all short term reference pictures to the passed |out| vector.
-  void GetShortTermRefPicsAppending(H264Picture::PtrVector& out);
+  void GetShortTermRefPicsAppending(VaapiH264Picture::PtrVector& out);
 
   // Append all long term reference pictures to the passed |out| vector.
-  void GetLongTermRefPicsAppending(H264Picture::PtrVector& out);
+  void GetLongTermRefPicsAppending(VaapiH264Picture::PtrVector& out);
 
   // Iterators for direct access to DPB contents.
   // Will be invalidated after any of Remove* calls.
-  typedef ScopedVector<H264Picture> Pictures;
+  typedef ScopedVector<VaapiH264Picture> Pictures;
   Pictures::iterator begin() { return pics_.begin(); }
   Pictures::iterator end() { return pics_.end(); }
   Pictures::reverse_iterator rbegin() { return pics_.rbegin(); }
   Pictures::reverse_iterator rend() { return pics_.rend(); }
 
   size_t size() const { return pics_.size(); }
   bool IsFull() const { return pics_.size() == max_num_pics_; }
 
   // Per H264 spec, increase to 32 if interlaced video is supported.
   enum { kDPBMaxSize = 16, };
 
  private:
   Pictures pics_;
   size_t max_num_pics_;
 
-  DISALLOW_COPY_AND_ASSIGN(H264DPB);
+  DISALLOW_COPY_AND_ASSIGN(VaapiH264DPB);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_COMMON_GPU_MEDIA_H264_DPB_H_
+#endif  // CONTENT_COMMON_GPU_MEDIA_VAAPI_H264_DPB_H_