LCOV - code coverage report
Current view: top level - libavcodec/tests - golomb.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 42 53 79.2 %
Date: 2017-10-24 00:14:43 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : #include <stdint.h>
      22             : #include <stdio.h>
      23             : 
      24             : #include "libavutil/internal.h"
      25             : #include "libavutil/mem.h"
      26             : 
      27             : #include "libavcodec/get_bits.h"
      28             : #include "libavcodec/golomb.h"
      29             : #include "libavcodec/put_bits.h"
      30             : 
      31             : #define COUNT 8191
      32             : #define SIZE (COUNT * 4)
      33             : 
      34           1 : int main(void)
      35             : {
      36           1 :     int i, ret = 0;
      37             :     uint8_t *temp;
      38             :     PutBitContext pb;
      39             :     GetBitContext gb;
      40             : 
      41           1 :     temp = av_malloc(SIZE);
      42           1 :     if (!temp)
      43           0 :         return 2;
      44             : 
      45           1 :     init_put_bits(&pb, temp, SIZE);
      46        8192 :     for (i = 0; i < COUNT; i++)
      47        8191 :         set_ue_golomb(&pb, i);
      48           1 :     flush_put_bits(&pb);
      49             : 
      50           1 :     init_get_bits(&gb, temp, 8 * SIZE);
      51        8192 :     for (i = 0; i < COUNT; i++) {
      52        8191 :         int j, s = show_bits(&gb, 25);
      53             : 
      54        8191 :         j = get_ue_golomb(&gb);
      55        8191 :         if (j != i) {
      56           0 :             fprintf(stderr, "get_ue_golomb: expected %d, got %d. bits: %7x\n",
      57             :                     i, j, s);
      58           0 :             ret = 1;
      59             :         }
      60             :     }
      61             : 
      62             : #define EXTEND(i) ((i) << 3 | (i) & 7)
      63           1 :     init_put_bits(&pb, temp, SIZE);
      64        8192 :     for (i = 0; i < COUNT; i++)
      65        8191 :         set_ue_golomb(&pb, EXTEND(i));
      66           1 :     flush_put_bits(&pb);
      67             : 
      68           1 :     init_get_bits(&gb, temp, 8 * SIZE);
      69        8192 :     for (i = 0; i < COUNT; i++) {
      70        8191 :         int j, s = show_bits_long(&gb, 32);
      71             : 
      72        8191 :         j = get_ue_golomb_long(&gb);
      73        8191 :         if (j != EXTEND(i)) {
      74           0 :             fprintf(stderr, "get_ue_golomb_long: expected %d, got %d. "
      75           0 :                     "bits: %8x\n", EXTEND(i), j, s);
      76           0 :             ret = 1;
      77             :         }
      78             :     }
      79             : 
      80             : #define EXTEND_L(i) ((i) << 4 | (i) & 15)
      81           1 :     init_put_bits(&pb, temp, SIZE);
      82        8192 :     for (i = 0; i < COUNT; i++)
      83        8191 :         set_ue_golomb_long(&pb, EXTEND_L(i));
      84           1 :     flush_put_bits(&pb);
      85             : 
      86           1 :     init_get_bits(&gb, temp, 8 * SIZE);
      87        8192 :     for (i = 0; i < COUNT; i++) {
      88        8191 :         int j, s = show_bits_long(&gb, 32);
      89             : 
      90        8191 :         j = get_ue_golomb_long(&gb);
      91        8191 :         if (j != EXTEND_L(i)) {
      92           0 :             fprintf(stderr, "get_ue_golomb_long: expected %d, got %d. "
      93           0 :                     "bits: %8x\n", EXTEND_L(i), j, s);
      94           0 :             ret = 1;
      95             :         }
      96             :     }
      97             : 
      98           1 :     init_put_bits(&pb, temp, SIZE);
      99        8192 :     for (i = 0; i < COUNT; i++)
     100        8191 :         set_se_golomb(&pb, i - COUNT / 2);
     101           1 :     flush_put_bits(&pb);
     102             : 
     103           1 :     init_get_bits(&gb, temp, 8 * SIZE);
     104        8192 :     for (i = 0; i < COUNT; i++) {
     105        8191 :         int j, s = show_bits(&gb, 25);
     106             : 
     107        8191 :         j = get_se_golomb(&gb);
     108        8191 :         if (j != i - COUNT / 2) {
     109           0 :             fprintf(stderr, "get_se_golomb: expected %d, got %d. bits: %7x\n",
     110             :                     i - COUNT / 2, j, s);
     111           0 :             ret = 1;
     112             :         }
     113             :     }
     114             : 
     115           1 :     av_free(temp);
     116             : 
     117           1 :     return ret;
     118             : }

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