FFmpeg
pixdesc_query.c
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1 /*
2  * Copyright (c) 2017 Clément Bœsch <u pkh me>
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 <stdlib.h>
22 
23 #include "libavutil/mem.h"
25 
26 static const struct {
27  const char *class;
29 } query_tab[] = {
30  {"is16BPS", is16BPS},
31  {"isNBPS", isNBPS},
32  {"isBE", isBE},
33  {"isYUV", isYUV},
34  {"isPlanarYUV", isPlanarYUV},
35  {"isSemiPlanarYUV", isSemiPlanarYUV},
36  {"isRGB", isRGB},
37  {"Gray", isGray},
38  {"RGBinInt", isRGBinInt},
39  {"BGRinInt", isBGRinInt},
40  {"Bayer", isBayer},
41  {"AnyRGB", isAnyRGB},
42  {"ALPHA", isALPHA},
43  {"Packed", isPacked},
44  {"Planar", isPlanar},
45  {"PackedRGB", isPackedRGB},
46  {"PlanarRGB", isPlanarRGB},
47  {"usePal", usePal},
48 };
49 
50 static int cmp_str(const void *a, const void *b)
51 {
52  const char *s1 = *(const char **)a;
53  const char *s2 = *(const char **)b;
54  return strcmp(s1, s2);
55 }
56 
57 int main(void)
58 {
59  int i, j;
60 
61  for (i = 0; i < FF_ARRAY_ELEMS(query_tab); i++) {
62  const char **pix_fmts = NULL;
63  int nb_pix_fmts = 0;
64  const AVPixFmtDescriptor *pix_desc = NULL;
65 
66  while ((pix_desc = av_pix_fmt_desc_next(pix_desc))) {
68  if (query_tab[i].cond(pix_fmt)) {
69  const char *pix_name = pix_desc->name;
70  if (pix_fmt == AV_PIX_FMT_RGB32) pix_name = "rgb32";
71  else if (pix_fmt == AV_PIX_FMT_RGB32_1) pix_name = "rgb32_1";
72  else if (pix_fmt == AV_PIX_FMT_BGR32) pix_name = "bgr32";
73  else if (pix_fmt == AV_PIX_FMT_BGR32_1) pix_name = "bgr32_1";
74 
75  av_dynarray_add(&pix_fmts, &nb_pix_fmts, (void *)pix_name);
76  }
77  }
78 
79  if (pix_fmts) {
80  qsort(pix_fmts, nb_pix_fmts, sizeof(*pix_fmts), cmp_str);
81 
82  printf("%s:\n", query_tab[i].class);
83  for (j = 0; j < nb_pix_fmts; j++)
84  printf(" %s\n", pix_fmts[j]);
85  printf("\n");
86 
87  av_free(pix_fmts);
88  }
89  }
90  return 0;
91 }
#define NULL
Definition: coverity.c:32
static av_always_inline int isAnyRGB(enum AVPixelFormat pix_fmt)
static enum AVPixelFormat pix_fmt
static av_always_inline int isPlanarRGB(enum AVPixelFormat pix_fmt)
Memory handling functions.
static av_always_inline int is16BPS(enum AVPixelFormat pix_fmt)
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
int main(void)
Definition: pixdesc_query.c:57
#define isALPHA(x)
Definition: swscale.c:51
static av_always_inline int isYUV(enum AVPixelFormat pix_fmt)
const char * name
Definition: pixdesc.h:82
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define AV_PIX_FMT_BGR32_1
Definition: pixfmt.h:363
#define s2
Definition: regdef.h:39
static av_always_inline int isSemiPlanarYUV(enum AVPixelFormat pix_fmt)
enum AVPixelFormat av_pix_fmt_desc_get_id(const AVPixFmtDescriptor *desc)
Definition: pixdesc.c:2541
#define b
Definition: input.c:41
static av_always_inline int isBayer(enum AVPixelFormat pix_fmt)
static const struct @318 query_tab[]
#define FF_ARRAY_ELEMS(a)
#define isGray(x)
Definition: swscale.c:40
#define AV_PIX_FMT_BGR32
Definition: pixfmt.h:362
static av_always_inline int isBE(enum AVPixelFormat pix_fmt)
static av_always_inline int isPlanar(enum AVPixelFormat pix_fmt)
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
static int cmp_str(const void *a, const void *b)
Definition: pixdesc_query.c:50
#define AV_PIX_FMT_RGB32
Definition: pixfmt.h:360
static av_always_inline int isRGB(enum AVPixelFormat pix_fmt)
static av_always_inline int isRGBinInt(enum AVPixelFormat pix_fmt)
static av_always_inline int isPlanarYUV(enum AVPixelFormat pix_fmt)
#define s1
Definition: regdef.h:38
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:275
int(* cond)(enum AVPixelFormat pix_fmt)
Definition: pixdesc_query.c:28
int
#define av_free(p)
void av_dynarray_add(void *tab_ptr, int *nb_ptr, void *elem)
Add the pointer to an element to a dynamic array.
Definition: mem.c:308
#define AV_PIX_FMT_RGB32_1
Definition: pixfmt.h:361
static av_always_inline int isBGRinInt(enum AVPixelFormat pix_fmt)
printf("static const uint8_t my_array[100] = {\n")
static av_always_inline int isPackedRGB(enum AVPixelFormat pix_fmt)
static av_always_inline int usePal(enum AVPixelFormat pix_fmt)
static av_always_inline int isPacked(enum AVPixelFormat pix_fmt)
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static av_always_inline int isNBPS(enum AVPixelFormat pix_fmt)
const AVPixFmtDescriptor * av_pix_fmt_desc_next(const AVPixFmtDescriptor *prev)
Iterate over all pixel format descriptors known to libavutil.
Definition: pixdesc.c:2529