libavcodec/golomb-test.c
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 /*
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  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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  *
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  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
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  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
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  * FFmpeg is distributed in the hope that it will be useful,
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  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
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  * License along with FFmpeg; if not, write to the Free Software
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  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <stdint.h>
 #include <stdio.h>
 
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 #include "libavutil/mem.h"
 
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 #include "get_bits.h"
 #include "golomb.h"
 #include "put_bits.h"
 
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 #define COUNT 8191
 #define SIZE (COUNT * 4)
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 int main(void)
 {
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     int i, ret = 0;
     uint8_t *temp;
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     PutBitContext pb;
     GetBitContext gb;
 
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     temp = av_malloc(SIZE);
     if (!temp)
         return 2;
 
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     init_put_bits(&pb, temp, SIZE);
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     for (i = 0; i < COUNT; i++)
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         set_ue_golomb(&pb, i);
     flush_put_bits(&pb);
 
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     init_get_bits(&gb, temp, 8 * SIZE);
     for (i = 0; i < COUNT; i++) {
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         int j, s = show_bits(&gb, 25);
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         j = get_ue_golomb(&gb);
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         if (j != i) {
             fprintf(stderr, "get_ue_golomb: expected %d, got %d. bits: %7x\n",
                     i, j, s);
             ret = 1;
         }
     }
 
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 #define EXTEND(i) ((i) << 3 | (i) & 7)
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     init_put_bits(&pb, temp, SIZE);
     for (i = 0; i < COUNT; i++)
         set_ue_golomb(&pb, EXTEND(i));
     flush_put_bits(&pb);
 
     init_get_bits(&gb, temp, 8 * SIZE);
     for (i = 0; i < COUNT; i++) {
         int j, s = show_bits_long(&gb, 32);
 
         j = get_ue_golomb_long(&gb);
         if (j != EXTEND(i)) {
             fprintf(stderr, "get_ue_golomb_long: expected %d, got %d. "
                     "bits: %8x\n", EXTEND(i), j, s);
             ret = 1;
         }
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     }
 
     init_put_bits(&pb, temp, SIZE);
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     for (i = 0; i < COUNT; i++)
         set_se_golomb(&pb, i - COUNT / 2);
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     flush_put_bits(&pb);
 
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     init_get_bits(&gb, temp, 8 * SIZE);
     for (i = 0; i < COUNT; i++) {
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         int j, s = show_bits(&gb, 25);
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         j = get_se_golomb(&gb);
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         if (j != i - COUNT / 2) {
             fprintf(stderr, "get_se_golomb: expected %d, got %d. bits: %7x\n",
                     i - COUNT / 2, j, s);
             ret = 1;
         }
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     }
 
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     av_free(temp);
 
     return ret;
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 }