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fourcc2pixfmt.c
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1 /*
2  * Copyright (c) 2012 Stefano Sabatini
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 "config.h"
22 #if HAVE_UNISTD_H
23 #include <unistd.h> /* getopt */
24 #endif
25 
26 #include "libavutil/pixdesc.h"
27 #include "libavcodec/avcodec.h"
28 #include "libavutil/common.h"
29 #include "libavcodec/raw.h"
30 
31 #undef printf
32 #undef fprintf
33 
34 #if !HAVE_GETOPT
35 #include "compat/getopt.c"
36 #endif
37 
38 static void usage(void)
39 {
40  printf("Show the relationships between rawvideo pixel formats and FourCC tags.\n");
41  printf("usage: fourcc2pixfmt [OPTIONS]\n");
42  printf("\n"
43  "Options:\n"
44  "-l list the pixel format for each fourcc\n"
45  "-L list the fourccs for each pixel format\n"
46  "-p PIX_FMT given a pixel format, print the list of associated fourccs (one per line)\n"
47  "-h print this help\n");
48 }
49 
50 static void print_pix_fmt_fourccs(enum AVPixelFormat pix_fmt, char sep)
51 {
52  int i;
53 
54  for (i = 0; ff_raw_pix_fmt_tags[i].pix_fmt != AV_PIX_FMT_NONE; i++) {
55  if (ff_raw_pix_fmt_tags[i].pix_fmt == pix_fmt) {
56  char buf[32];
57  av_get_codec_tag_string(buf, sizeof(buf), ff_raw_pix_fmt_tags[i].fourcc);
58  printf("%s%c", buf, sep);
59  }
60  }
61 }
62 
63 int main(int argc, char **argv)
64 {
65  int i, list_fourcc_pix_fmt = 0, list_pix_fmt_fourccs = 0;
66  const char *pix_fmt_name = NULL;
67  char c;
68 
69  if (argc == 1) {
70  usage();
71  return 0;
72  }
73 
74  while ((c = getopt(argc, argv, "hp:lL")) != -1) {
75  switch (c) {
76  case 'h':
77  usage();
78  return 0;
79  case 'l':
80  list_fourcc_pix_fmt = 1;
81  break;
82  case 'L':
83  list_pix_fmt_fourccs = 1;
84  break;
85  case 'p':
86  pix_fmt_name = optarg;
87  break;
88  case '?':
89  usage();
90  return 1;
91  }
92  }
93 
94  if (list_fourcc_pix_fmt) {
95  for (i = 0; ff_raw_pix_fmt_tags[i].pix_fmt != AV_PIX_FMT_NONE; i++) {
96  char buf[32];
97  av_get_codec_tag_string(buf, sizeof(buf), ff_raw_pix_fmt_tags[i].fourcc);
98  printf("%s: %s\n", buf, av_get_pix_fmt_name(ff_raw_pix_fmt_tags[i].pix_fmt));
99  }
100  }
101 
102  if (list_pix_fmt_fourccs) {
103  for (i = 0; i < AV_PIX_FMT_NB; i++) {
104  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(i);
105  if (!pix_desc->name || pix_desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
106  continue;
107  printf("%s: ", pix_desc->name);
108  print_pix_fmt_fourccs(i, ' ');
109  printf("\n");
110  }
111  }
112 
113  if (pix_fmt_name) {
114  enum AVPixelFormat pix_fmt = av_get_pix_fmt(pix_fmt_name);
115  if (pix_fmt == AV_PIX_FMT_NONE) {
116  fprintf(stderr, "Invalid pixel format selected '%s'\n", pix_fmt_name);
117  return 1;
118  }
119  print_pix_fmt_fourccs(pix_fmt, '\n');
120  }
121 
122  return 0;
123 }