LCOV - code coverage report
Current view: top level - libavcodec/tests - rangecoder.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 15 17 88.2 %
Date: 2017-10-24 00:14:43 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * This file is part of FFmpeg.
       3             :  *
       4             :  * FFmpeg is free software; you can redistribute it and/or
       5             :  * modify it under the terms of the GNU Lesser General Public
       6             :  * License as published by the Free Software Foundation; either
       7             :  * version 2.1 of the License, or (at your option) any later version.
       8             :  *
       9             :  * FFmpeg is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             :  * Lesser General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU Lesser General Public
      15             :  * License along with FFmpeg; if not, write to the Free Software
      16             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      17             :  */
      18             : 
      19             : #include <stdint.h>
      20             : #include <string.h>
      21             : 
      22             : #include "libavutil/lfg.h"
      23             : #include "libavutil/log.h"
      24             : 
      25             : #include "libavcodec/rangecoder.h"
      26             : 
      27             : #define SIZE 10240
      28             : 
      29           1 : int main(void)
      30             : {
      31             :     RangeCoder c;
      32             :     uint8_t b[9 * SIZE];
      33             :     uint8_t r[9 * SIZE];
      34             :     int i;
      35             :     uint8_t state[10];
      36             :     AVLFG prng;
      37             : 
      38           1 :     av_lfg_init(&prng, 1);
      39             : 
      40           1 :     ff_init_range_encoder(&c, b, SIZE);
      41           1 :     ff_build_rac_states(&c, (1LL << 32) / 20, 128 + 64 + 32 + 16);
      42             : 
      43           1 :     memset(state, 128, sizeof(state));
      44             : 
      45       10241 :     for (i = 0; i < SIZE; i++)
      46       10240 :         r[i] = av_lfg_get(&prng) % 7;
      47             : 
      48       10241 :     for (i = 0; i < SIZE; i++)
      49       10240 :         put_rac(&c, state, r[i] & 1);
      50             : 
      51           1 :     ff_rac_terminate(&c);
      52             : 
      53           1 :     ff_init_range_decoder(&c, b, SIZE);
      54             : 
      55           1 :     memset(state, 128, sizeof(state));
      56             : 
      57       10241 :     for (i = 0; i < SIZE; i++)
      58       10240 :         if ((r[i] & 1) != get_rac(&c, state)) {
      59           0 :             av_log(NULL, AV_LOG_ERROR, "rac failure at %d\n", i);
      60           0 :             return 1;
      61             :         }
      62             : 
      63           1 :     return 0;
      64             : }

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