FFmpeg  2.1.1
v4l2-common.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "v4l2-common.h"
20 
22  //ff_fmt codec_id v4l2_fmt
23  { AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV420 },
24  { AV_PIX_FMT_YUV420P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU420 },
25  { AV_PIX_FMT_YUV422P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV422P },
26  { AV_PIX_FMT_YUYV422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUYV },
27  { AV_PIX_FMT_UYVY422, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_UYVY },
28  { AV_PIX_FMT_YUV411P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV411P },
29  { AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YUV410 },
30  { AV_PIX_FMT_YUV410P, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_YVU410 },
31  { AV_PIX_FMT_RGB555LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555 },
32  { AV_PIX_FMT_RGB555BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB555X },
33  { AV_PIX_FMT_RGB565LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565 },
34  { AV_PIX_FMT_RGB565BE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB565X },
35  { AV_PIX_FMT_BGR24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR24 },
36  { AV_PIX_FMT_RGB24, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB24 },
37  { AV_PIX_FMT_BGR0, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_BGR32 },
38  { AV_PIX_FMT_0RGB, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_RGB32 },
39  { AV_PIX_FMT_GRAY8, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_GREY },
40 #ifdef V4L2_PIX_FMT_Y16
41  { AV_PIX_FMT_GRAY16LE,AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_Y16 },
42 #endif
43  { AV_PIX_FMT_NV12, AV_CODEC_ID_RAWVIDEO, V4L2_PIX_FMT_NV12 },
44  { AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_MJPEG },
45  { AV_PIX_FMT_NONE, AV_CODEC_ID_MJPEG, V4L2_PIX_FMT_JPEG },
46 #ifdef V4L2_PIX_FMT_H264
47  { AV_PIX_FMT_NONE, AV_CODEC_ID_H264, V4L2_PIX_FMT_H264 },
48 #endif
49 #ifdef V4L2_PIX_FMT_CPIA1
50  { AV_PIX_FMT_NONE, AV_CODEC_ID_CPIA, V4L2_PIX_FMT_CPIA1 },
51 #endif
53 };
54 
56 {
57  int i;
58 
59  for (i = 0; avpriv_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
60  if ((codec_id == AV_CODEC_ID_NONE ||
61  avpriv_fmt_conversion_table[i].codec_id == codec_id) &&
62  (pix_fmt == AV_PIX_FMT_NONE ||
63  avpriv_fmt_conversion_table[i].ff_fmt == pix_fmt)) {
64  return avpriv_fmt_conversion_table[i].v4l2_fmt;
65  }
66  }
67 
68  return 0;
69 }
70 
72 {
73  int i;
74 
75  for (i = 0; avpriv_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
76  if (avpriv_fmt_conversion_table[i].v4l2_fmt == v4l2_fmt &&
77  avpriv_fmt_conversion_table[i].codec_id == codec_id) {
78  return avpriv_fmt_conversion_table[i].ff_fmt;
79  }
80  }
81 
82  return AV_PIX_FMT_NONE;
83 }
84 
86 {
87  int i;
88 
89  for (i = 0; avpriv_fmt_conversion_table[i].codec_id != AV_CODEC_ID_NONE; i++) {
90  if (avpriv_fmt_conversion_table[i].v4l2_fmt == v4l2_fmt) {
91  return avpriv_fmt_conversion_table[i].codec_id;
92  }
93  }
94 
95  return AV_CODEC_ID_NONE;
96 }
struct fmt_map avpriv_fmt_conversion_table[]
Definition: v4l2-common.c:21
packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), big-endian, most significant bit to 0 ...
Definition: avcodec.h:4584
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: avcodec.h:4536
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: avcodec.h:4538
enum AVCodecID codec_id
Definition: v4l2-common.h:52
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), big-endian
Definition: avcodec.h:4582
Pixel format.
Definition: avcodec.h:4533
Y , 8bpp.
Definition: avcodec.h:4542
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: avcodec.h:4537
enum AVPixelFormat pix_fmt
Definition: v4l.c:62
packed RGB 5:6:5, 16bpp, (msb) 5R 6G 5B(lsb), little-endian
Definition: avcodec.h:4583
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:102
enum AVCodecID avpriv_fmt_v4l2codec(uint32_t v4l2_fmt)
Definition: v4l2-common.c:85
packed BGR 8:8:8, 32bpp, BGR0BGR0...
Definition: avcodec.h:4692
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: avcodec.h:4541
enum AVCodecID codec_id
Definition: mov_chan.c:433
AVPixelFormat
Pixel format.
Definition: pixfmt.h:66
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: avcodec.h:4534
enum AVPixelFormat avpriv_fmt_v4l2ff(uint32_t v4l2_fmt, enum AVCodecID codec_id)
Definition: v4l2-common.c:71
uint32_t avpriv_fmt_ff2v4l(enum AVPixelFormat pix_fmt, enum AVCodecID codec_id)
Definition: v4l2-common.c:55
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: avcodec.h:4535
Y , 16bpp, little-endian.
Definition: avcodec.h:4568
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: avcodec.h:4559
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: avcodec.h:4551
enum AVPixelFormat ff_fmt
Definition: v4l2-common.h:51
uint32_t v4l2_fmt
Definition: v4l2-common.h:53
packed RGB 5:5:5, 16bpp, (msb)1A 5R 5G 5B(lsb), little-endian, most significant bit to 0 ...
Definition: avcodec.h:4585
packed RGB 8:8:8, 32bpp, 0RGB0RGB...
Definition: avcodec.h:4689
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: avcodec.h:4540