libvpx: Add VP9 decoder.

source/libvpx/vp9/encoder/vp9_rdopt.h

+/*
+ *  Copyright (c) 2010 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.
+ */
+
+
+#ifndef VP9_ENCODER_VP9_RDOPT_H_
+#define VP9_ENCODER_VP9_RDOPT_H_
+
+#define RDCOST(RM,DM,R,D) ( ((128+((int64_t)R)*(RM)) >> 8) + ((int64_t)DM)*(D) )
+#define RDCOST_8x8(RM,DM,R,D) ( ((128+((int64_t)R)*(RM)) >> 8) + ((int64_t)DM)*(D) )
+
+extern void vp9_initialize_rd_consts(VP9_COMP *cpi, int Qvalue);
+
+extern void vp9_initialize_me_consts(VP9_COMP *cpi, int QIndex);
+
+extern void vp9_rd_pick_intra_mode(VP9_COMP *cpi, MACROBLOCK *x,
+                                   int *r, int *d);
+
+extern void vp9_rd_pick_intra_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
+                                      int *r, int *d);
+
+extern void vp9_pick_mode_inter_macroblock(VP9_COMP *cpi, MACROBLOCK *x,
+                                           int recon_yoffset,
+                                           int recon_uvoffset, int *r, int *d);
+
+extern int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
+                                         int recon_yoffset, int recon_uvoffset,
+                                         int *returnrate, int *returndist);
+
+extern void vp9_init_me_luts();
+
+extern void vp9_set_mbmode_and_mvs(MACROBLOCK *x,
+                                   MB_PREDICTION_MODE mb, int_mv *mv);
+
+#endif