libvpx: Add VP9 decoder.

source/libvpx/vp9/common/vp9_seg_common.h

+/*
+ *  Copyright (c) 2012 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "vp9/common/vp9_type_aliases.h"
+#include "vp9/common/vp9_onyxc_int.h"
+#include "vp9/common/vp9_blockd.h"
+
+#ifndef VP9_COMMON_VP9_SEG_COMMON_H_
+#define VP9_COMMON_VP9_SEG_COMMON_H_
+
+int vp9_segfeature_active(const MACROBLOCKD *xd,
+                          int segment_id,
+                          SEG_LVL_FEATURES feature_id);
+
+void vp9_clearall_segfeatures(MACROBLOCKD *xd);
+
+void vp9_enable_segfeature(MACROBLOCKD *xd,
+                           int segment_id,
+                           SEG_LVL_FEATURES feature_id);
+
+void vp9_disable_segfeature(MACROBLOCKD *xd,
+                            int segment_id,
+                            SEG_LVL_FEATURES feature_id);
+
+int vp9_seg_feature_data_max(SEG_LVL_FEATURES feature_id);
+
+int vp9_is_segfeature_signed(SEG_LVL_FEATURES feature_id);
+
+void vp9_clear_segdata(MACROBLOCKD *xd,
+                       int segment_id,
+                       SEG_LVL_FEATURES feature_id);
+
+void vp9_set_segdata(MACROBLOCKD *xd,
+                     int segment_id,
+                     SEG_LVL_FEATURES feature_id,
+                     int seg_data);
+
+int vp9_get_segdata(const MACROBLOCKD *xd,
+                    int segment_id,
+                    SEG_LVL_FEATURES feature_id);
+
+void vp9_clear_segref(MACROBLOCKD *xd, int segment_id);
+
+void vp9_set_segref(MACROBLOCKD *xd,
+                    int segment_id,
+                    MV_REFERENCE_FRAME ref_frame);
+
+int vp9_check_segref(const MACROBLOCKD *xd,
+                     int segment_id,
+                     MV_REFERENCE_FRAME ref_frame);
+
+int vp9_check_segref_inter(MACROBLOCKD *xd, int segment_id);
+
+int vp9_get_seg_tx_type(MACROBLOCKD *xd, int segment_id);
+
+#endif /* __INC_SEG_COMMON_H__ */
+