libvpx: Add VP9 decoder.

source/libvpx/y4minput.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.
  *
  *  Based on code from the OggTheora software codec source code,
  *  Copyright (C) 2002-2010 The Xiph.Org Foundation and contributors.
  */
 #if !defined(_y4minput_H)
 # define _y4minput_H (1)
 # include <stdio.h>
 # include "vpx/vpx_image.h"
 
 
 
 typedef struct y4m_input y4m_input;
 
 
 
 /*The function used to perform chroma conversion.*/
 typedef void (*y4m_convert_func)(y4m_input *_y4m,
- unsigned char *_dst,unsigned char *_src);
+                                 unsigned char *_dst, unsigned char *_src);
 
 
 
-struct y4m_input{
+struct y4m_input {
   int               pic_w;
   int               pic_h;
   int               fps_n;
   int               fps_d;
   int               par_n;
   int               par_d;
   char              interlace;
   int               src_c_dec_h;
   int               src_c_dec_v;
   int               dst_c_dec_h;
   int               dst_c_dec_v;
   char              chroma_type[16];
   /*The size of each converted frame buffer.*/
   size_t            dst_buf_sz;
   /*The amount to read directly into the converted frame buffer.*/
   size_t            dst_buf_read_sz;
   /*The size of the auxilliary buffer.*/
   size_t            aux_buf_sz;
   /*The amount to read into the auxilliary buffer.*/
   size_t            aux_buf_read_sz;
   y4m_convert_func  convert;
   unsigned char    *dst_buf;
   unsigned char    *aux_buf;
 };
 
-int y4m_input_open(y4m_input *_y4m,FILE *_fin,char *_skip,int _nskip);
+int y4m_input_open(y4m_input *_y4m, FILE *_fin, char *_skip, int _nskip);
 void y4m_input_close(y4m_input *_y4m);
-int y4m_input_fetch_frame(y4m_input *_y4m,FILE *_fin,vpx_image_t *img);
+int y4m_input_fetch_frame(y4m_input *_y4m, FILE *_fin, vpx_image_t *img);
 
 #endif