LCOV - code coverage report
Current view: top level - libavcodec - vp56rac.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 8 9 88.9 %
Date: 2017-12-14 01:15:32 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * VP5/6/8 decoder
       3             :  * Copyright (c) 2010 Fiona Glaser <fiona@x264.com>
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "libavutil/common.h"
      23             : #include "vp56.h"
      24             : 
      25             : const uint8_t ff_vp56_norm_shift[256]= {
      26             :  8,7,6,6,5,5,5,5,4,4,4,4,4,4,4,4,
      27             :  3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
      28             :  2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
      29             :  2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
      30             :  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
      31             :  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
      32             :  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
      33             :  1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
      34             :  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
      35             :  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
      36             :  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
      37             :  0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
      38             : };
      39             : 
      40        8144 : int ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size)
      41             : {
      42        8144 :     c->high = 255;
      43        8144 :     c->bits = -16;
      44        8144 :     c->buffer = buf;
      45        8144 :     c->end = buf + buf_size;
      46        8144 :     if (buf_size < 1)
      47           0 :         return AVERROR_INVALIDDATA;
      48        8144 :     c->code_word = bytestream_get_be24(&c->buffer);
      49        8144 :     return 0;
      50             : }

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