src/gallium/auxiliary/vl/vl_bitstream_parser.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Younes Manton.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef vl_bitstream_parser_h
  29 #define vl_bitstream_parser_h
  30
  31 #include "pipe/p_compiler.h"
  32
  33 struct vl_bitstream_parser
  34 {
  35    unsigned num_bitstreams;
  36    const unsigned **bitstreams;
  37    const unsigned *sizes;
  38    unsigned cur_bitstream;
  39    unsigned cursor;
  40 };
  41
  42 bool vl_bitstream_parser_init(struct vl_bitstream_parser *parser,
  43                               unsigned num_bitstreams,
  44                               const void **bitstreams,
  45                               const unsigned *sizes);
  46
  47 void vl_bitstream_parser_cleanup(struct vl_bitstream_parser *parser);
  48
  49 unsigned
  50 vl_bitstream_parser_get_bits(struct vl_bitstream_parser *parser,
  51                              unsigned how_many_bits);
  52
  53 unsigned
  54 vl_bitstream_parser_show_bits(struct vl_bitstream_parser *parser,
  55                               unsigned how_many_bits);
  56
  57 void vl_bitstream_parser_forward(struct vl_bitstream_parser *parser,
  58                                  unsigned how_many_bits);
  59
  60 void vl_bitstream_parser_rewind(struct vl_bitstream_parser *parser,
  61                                 unsigned how_many_bits);
  62
  63 #endif /* vl_bitstream_parser_h */