libvpx: Add VP9 decoder.

source/libvpx/vp8/encoder/pickinter.c

Index: source/libvpx/vp8/encoder/pickinter.c
===================================================================
--- source/libvpx/vp8/encoder/pickinter.c	(revision 172621)
+++ source/libvpx/vp8/encoder/pickinter.c	(working copy)
@@ -389,16 +389,15 @@
 
 }
 
-static void update_mvcount(VP8_COMP *cpi, MACROBLOCK *x, int_mv *best_ref_mv)
+static void update_mvcount(VP8_COMP *cpi, MACROBLOCKD *xd, int_mv *best_ref_mv)
 {
-    MACROBLOCKD *xd = &x->e_mbd;
     /* Split MV modes currently not supported when RD is nopt enabled,
      * therefore, only need to modify MVcount in NEWMV mode. */
     if (xd->mode_info_context->mbmi.mode == NEWMV)
     {
-        x->MVcount[0][mv_max+((xd->mode_info_context->mbmi.mv.as_mv.row -
+        cpi->MVcount[0][mv_max+((xd->mode_info_context->mbmi.mv.as_mv.row -
                                       best_ref_mv->as_mv.row) >> 1)]++;
-        x->MVcount[1][mv_max+((xd->mode_info_context->mbmi.mv.as_mv.col -
+        cpi->MVcount[1][mv_max+((xd->mode_info_context->mbmi.mv.as_mv.col -
                                       best_ref_mv->as_mv.col) >> 1)]++;
     }
 }
@@ -1241,11 +1240,11 @@
       != cpi->common.ref_frame_sign_bias[xd->mode_info_context->mbmi.ref_frame])
         best_ref_mv.as_int = best_ref_mv_sb[!sign_bias].as_int;
 
-    update_mvcount(cpi, x, &best_ref_mv);
+    update_mvcount(cpi, &x->e_mbd, &best_ref_mv);
 }
 
 
-void vp8_pick_intra_mode(MACROBLOCK *x, int *rate_)
+void vp8_pick_intra_mode(VP8_COMP *cpi, MACROBLOCK *x, int *rate_)
 {
     int error4x4, error16x16 = INT_MAX;
     int rate, best_rate = 0, distortion, best_sse;