FFmpeg
lzo.c
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1 /*
2  * Copyright (c) 2006 Reimar Doeffinger
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 <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <lzo/lzo1x.h>
25 
26 #include "libavutil/log.h"
27 #include "libavutil/lzo.h"
28 #include "libavutil/mem.h"
29 
30 #define MAXSZ (10*1024*1024)
31 
32 /* Define one of these to 1 if you wish to benchmark liblzo
33  * instead of our native implementation. */
34 #define BENCHMARK_LIBLZO_SAFE 0
35 #define BENCHMARK_LIBLZO_UNSAFE 0
36 
37 int main(int argc, char *argv[]) {
38  FILE *in = fopen(argv[1], "rb");
39  int comp_level = argc > 2 ? atoi(argv[2]) : 0;
40  uint8_t *orig = av_malloc(MAXSZ + 16);
41  uint8_t *comp = av_malloc(2*MAXSZ + 16);
42  uint8_t *decomp = av_malloc(MAXSZ + 16);
43  size_t s = fread(orig, 1, MAXSZ, in);
44  lzo_uint clen = 0;
45  long tmp[LZO1X_MEM_COMPRESS];
46  int inlen, outlen;
47  int i;
49  if (comp_level == 0) {
50  lzo1x_1_compress(orig, s, comp, &clen, tmp);
51  } else if (comp_level == 11) {
52  lzo1x_1_11_compress(orig, s, comp, &clen, tmp);
53  } else if (comp_level == 12) {
54  lzo1x_1_12_compress(orig, s, comp, &clen, tmp);
55  } else if (comp_level == 15) {
56  lzo1x_1_15_compress(orig, s, comp, &clen, tmp);
57  } else
58  lzo1x_999_compress(orig, s, comp, &clen, tmp);
59  for (i = 0; i < 300; i++) {
60  inlen = clen; outlen = MAXSZ;
61 #if BENCHMARK_LIBLZO_SAFE
62  if (lzo1x_decompress_safe(comp, inlen, decomp, &outlen, NULL))
63 #elif BENCHMARK_LIBLZO_UNSAFE
64  if (lzo1x_decompress(comp, inlen, decomp, &outlen, NULL))
65 #else
66  if (av_lzo1x_decode(decomp, &outlen, comp, &inlen))
67 #endif
68  av_log(NULL, AV_LOG_ERROR, "decompression error\n");
69  }
70  if (memcmp(orig, decomp, s))
71  av_log(NULL, AV_LOG_ERROR, "decompression incorrect\n");
72  else
73  av_log(NULL, AV_LOG_ERROR, "decompression OK\n");
74  fclose(in);
75  av_free(orig);
76  av_free(comp);
77  av_free(decomp);
78  return 0;
79 }
comp
static void comp(unsigned char *dst, ptrdiff_t dst_stride, unsigned char *src, ptrdiff_t src_stride, int add)
Definition: eamad.c:80
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
s
#define s(width, name)
Definition: cbs_vp9.c:198
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
NULL
#define NULL
Definition: coverity.c:32
main
int main(int argc, char *argv[])
Definition: lzo.c:37
av_lzo1x_decode
int av_lzo1x_decode(void *out, int *outlen, const void *in, int *inlen)
Decodes LZO 1x compressed data.
Definition: lzo.c:136
av_log_set_level
void av_log_set_level(int level)
Set the log level.
Definition: log.c:442
log.h
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:244
lzo.h
mem.h
av_free
#define av_free(p)
Definition: tableprint_vlc.h:33
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
MAXSZ
#define MAXSZ
Definition: lzo.c:30