libvpx: Add VP9 decoder.

source/libvpx/vp8/common/ppc/systemdependent.c

 /*
  *  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.
  */
 
 
 #include "subpixel.h"
 #include "loopfilter.h"
 #include "recon.h"
-#include "idct.h"
 #include "onyxc_int.h"
 
-void (*vp8_short_idct4x4)(short *input, short *output, int pitch);
-void (*vp8_short_idct4x4_1)(short *input, short *output, int pitch);
-void (*vp8_dc_only_idct)(short input_dc, short *output, int pitch);
-
 extern void (*vp8_post_proc_down_and_across_mb_row)(
     unsigned char *src_ptr,
     unsigned char *dst_ptr,
     int src_pixels_per_line,
     int dst_pixels_per_line,
     int cols,
     unsigned char *f,
     int size
 );
 
@@ skipping 129 matching lines @@
     vp8_post_proc_down_and_across_mb_row = vp8_post_proc_down_and_across_mb_row_c;
     vp8_mbpost_proc_down                  = vp8_mbpost_proc_down_c;
     vp8_mbpost_proc_across_ip              = vp8_mbpost_proc_across_ip_c;
     vp8_plane_add_noise                   = vp8_plane_add_noise_c;
 
     vp8_copy_mem16x16                    = copy_mem16x16_ppc;
     vp8_copy_mem8x8                      = vp8_copy_mem8x8_c;
     vp8_copy_mem8x4                      = vp8_copy_mem8x4_c;
 
 }