1 /*
2 * V4L2 format helper functions
3 *
4 * Copyright (C) 2017 Alexis Ballier <aballier@gentoo.org>
5 * Copyright (C) 2017 Jorge Ramirez <jorge.ramirez-ortiz@linaro.org>
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24 #include <linux/videodev2.h>
25 #include <search.h>
26 #include "v4l2_fmt.h"
27
28 #define V4L2_FMT(x) V4L2_PIX_FMT_##x
29 #define AV_CODEC(x) AV_CODEC_ID_##x
30 #define AV_FMT(x) AV_PIX_FMT_##x
31
32 static const struct fmt_conversion {
33 enum AVPixelFormat avfmt;
34 enum AVCodecID avcodec;
35 uint32_t v4l2_fmt;
36 } fmt_map[] = {
37 { AV_FMT(RGB555LE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB555) },
38 { AV_FMT(RGB555BE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB555X) },
39 { AV_FMT(RGB565LE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB565) },
40 { AV_FMT(RGB565BE), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB565X) },
41 { AV_FMT(BGR24), AV_CODEC(RAWVIDEO), V4L2_FMT(BGR24) },
42 { AV_FMT(RGB24), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB24) },
43 { AV_FMT(BGR0), AV_CODEC(RAWVIDEO), V4L2_FMT(BGR32) },
44 { AV_FMT(0RGB), AV_CODEC(RAWVIDEO), V4L2_FMT(RGB32) },
45 { AV_FMT(GRAY8), AV_CODEC(RAWVIDEO), V4L2_FMT(GREY) },
46 { AV_FMT(YUV420P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV420) },
47 { AV_FMT(YUYV422), AV_CODEC(RAWVIDEO), V4L2_FMT(YUYV) },
48 { AV_FMT(UYVY422), AV_CODEC(RAWVIDEO), V4L2_FMT(UYVY) },
49 { AV_FMT(YUV422P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV422P) },
50 { AV_FMT(YUV411P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV411P) },
51 { AV_FMT(YUV410P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV410) },
52 { AV_FMT(YUV410P), AV_CODEC(RAWVIDEO), V4L2_FMT(YVU410) },
53 { AV_FMT(NV12), AV_CODEC(RAWVIDEO), V4L2_FMT(NV12) },
54 { AV_FMT(NONE), AV_CODEC(MJPEG), V4L2_FMT(MJPEG) },
55 { AV_FMT(NONE), AV_CODEC(MJPEG), V4L2_FMT(JPEG) },
56 #ifdef V4L2_PIX_FMT_SRGGB8
57 { AV_FMT(BAYER_BGGR8), AV_CODEC(RAWVIDEO), V4L2_FMT(SBGGR8) },
58 { AV_FMT(BAYER_GBRG8), AV_CODEC(RAWVIDEO), V4L2_FMT(SGBRG8) },
59 { AV_FMT(BAYER_GRBG8), AV_CODEC(RAWVIDEO), V4L2_FMT(SGRBG8) },
60 { AV_FMT(BAYER_RGGB8), AV_CODEC(RAWVIDEO), V4L2_FMT(SRGGB8) },
61 #endif
62 #ifdef V4L2_PIX_FMT_Y16
63 { AV_FMT(GRAY16LE), AV_CODEC(RAWVIDEO), V4L2_FMT(Y16) },
64 #endif
65 #ifdef V4L2_PIX_FMT_NV12M
66 { AV_FMT(NV12), AV_CODEC(RAWVIDEO), V4L2_FMT(NV12M) },
67 #endif
68 #ifdef V4L2_PIX_FMT_NV21M
69 { AV_FMT(NV21), AV_CODEC(RAWVIDEO), V4L2_FMT(NV21M) },
70 #endif
71 #ifdef V4L2_PIX_FMT_YUV420M
72 { AV_FMT(YUV420P), AV_CODEC(RAWVIDEO), V4L2_FMT(YUV420M) },
73 #endif
74 #ifdef V4L2_PIX_FMT_NV16M
75 { AV_FMT(NV16), AV_CODEC(RAWVIDEO), V4L2_FMT(NV16M) },
76 #endif
77 #ifdef V4L2_PIX_FMT_H263
78 { AV_FMT(NONE), AV_CODEC(H263), V4L2_FMT(H263) },
79 #endif
80 #ifdef V4L2_PIX_FMT_H264
81 { AV_FMT(NONE), AV_CODEC(H264), V4L2_FMT(H264) },
82 #endif
83 #ifdef V4L2_PIX_FMT_MPEG4
84 { AV_FMT(NONE), AV_CODEC(MPEG4), V4L2_FMT(MPEG4) },
85 #endif
86 #ifdef V4L2_PIX_FMT_CPIA1
87 { AV_FMT(NONE), AV_CODEC(CPIA), V4L2_FMT(CPIA1) },
88 #endif
89 #ifdef V4L2_PIX_FMT_DV
90 { AV_FMT(NONE), AV_CODEC(DVVIDEO), V4L2_FMT(DV) },
91 #endif
92 #ifdef V4L2_PIX_FMT_MPEG1
93 { AV_FMT(NONE), AV_CODEC(MPEG1VIDEO), V4L2_FMT(MPEG1) },
94 #endif
95 #ifdef V4L2_PIX_FMT_MPEG2
96 { AV_FMT(NONE), AV_CODEC(MPEG2VIDEO), V4L2_FMT(MPEG2) },
97 #endif
98 #ifdef V4L2_PIX_FMT_VP8
99 { AV_FMT(NONE), AV_CODEC(VP8), V4L2_FMT(VP8) },
100 #endif
101 #ifdef V4L2_PIX_FMT_VP9
102 { AV_FMT(NONE), AV_CODEC(VP9), V4L2_FMT(VP9) },
103 #endif
104 #ifdef V4L2_PIX_FMT_HEVC
105 { AV_FMT(NONE), AV_CODEC(HEVC), V4L2_FMT(HEVC) },
106 #endif
107 #ifdef V4L2_PIX_FMT_VC1_ANNEX_G
108 { AV_FMT(NONE), AV_CODEC(VC1), V4L2_FMT(VC1_ANNEX_G) },
109 #endif
110 };
111
ff_v4l2_format_avcodec_to_v4l2(enum AVCodecID avcodec)112 uint32_t ff_v4l2_format_avcodec_to_v4l2(enum AVCodecID avcodec)
113 {
114 int i;
115 for (i = 0; i < FF_ARRAY_ELEMS(fmt_map); i++) {
116 if (fmt_map[i].avcodec == avcodec)
117 return fmt_map[i].v4l2_fmt;
118 }
119 return 0;
120 }
121
ff_v4l2_format_avfmt_to_v4l2(enum AVPixelFormat avfmt)122 uint32_t ff_v4l2_format_avfmt_to_v4l2(enum AVPixelFormat avfmt)
123 {
124 int i;
125 for (i = 0; i < FF_ARRAY_ELEMS(fmt_map); i++) {
126 if (fmt_map[i].avfmt == avfmt)
127 return fmt_map[i].v4l2_fmt;
128 }
129 return 0;
130 }
131
ff_v4l2_format_v4l2_to_avfmt(uint32_t v4l2_fmt,enum AVCodecID avcodec)132 enum AVPixelFormat ff_v4l2_format_v4l2_to_avfmt(uint32_t v4l2_fmt, enum AVCodecID avcodec)
133 {
134 int i;
135 for (i = 0; i < FF_ARRAY_ELEMS(fmt_map); i++) {
136 if (fmt_map[i].avcodec == avcodec &&
137 fmt_map[i].v4l2_fmt == v4l2_fmt)
138 return fmt_map[i].avfmt;
139 }
140 return AV_PIX_FMT_NONE;
141 }
142