1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
2
3 .. _pixfmt-reserved:
4
5 ***************************
6 Reserved Format Identifiers
7 ***************************
8
9 These formats are not defined by this specification, they are just
10 listed for reference and to avoid naming conflicts. If you want to
11 register your own format, send an e-mail to the linux-media mailing list
12 `https://linuxtv.org/lists.php <https://linuxtv.org/lists.php>`__
13 for inclusion in the ``videodev2.h`` file. If you want to share your
14 format with other developers add a link to your documentation and send a
15 copy to the linux-media mailing list for inclusion in this section. If
16 you think your format should be listed in a standard format section
17 please make a proposal on the linux-media mailing list.
18
19
20 .. tabularcolumns:: |p{6.6cm}|p{2.2cm}|p{8.5cm}|
21
22 .. raw:: latex
23
24 \small
25
26 .. _reserved-formats:
27
28 .. flat-table:: Reserved Image Formats
29 :header-rows: 1
30 :stub-columns: 0
31 :widths: 3 1 4
32
33 * - Identifier
34 - Code
35 - Details
36 * .. _V4L2-PIX-FMT-DV:
37
38 - ``V4L2_PIX_FMT_DV``
39 - 'dvsd'
40 - unknown
41 * .. _V4L2-PIX-FMT-ET61X251:
42
43 - ``V4L2_PIX_FMT_ET61X251``
44 - 'E625'
45 - Compressed format of the ET61X251 driver.
46 * .. _V4L2-PIX-FMT-HI240:
47
48 - ``V4L2_PIX_FMT_HI240``
49 - 'HI24'
50 - 8 bit RGB format used by the BTTV driver.
51 * .. _V4L2-PIX-FMT-CPIA1:
52
53 - ``V4L2_PIX_FMT_CPIA1``
54 - 'CPIA'
55 - YUV format used by the gspca cpia1 driver.
56 * .. _V4L2-PIX-FMT-JPGL:
57
58 - ``V4L2_PIX_FMT_JPGL``
59 - 'JPGL'
60 - JPEG-Light format (Pegasus Lossless JPEG) used in Divio webcams NW
61 80x.
62 * .. _V4L2-PIX-FMT-SPCA501:
63
64 - ``V4L2_PIX_FMT_SPCA501``
65 - 'S501'
66 - YUYV per line used by the gspca driver.
67 * .. _V4L2-PIX-FMT-SPCA505:
68
69 - ``V4L2_PIX_FMT_SPCA505``
70 - 'S505'
71 - YYUV per line used by the gspca driver.
72 * .. _V4L2-PIX-FMT-SPCA508:
73
74 - ``V4L2_PIX_FMT_SPCA508``
75 - 'S508'
76 - YUVY per line used by the gspca driver.
77 * .. _V4L2-PIX-FMT-SPCA561:
78
79 - ``V4L2_PIX_FMT_SPCA561``
80 - 'S561'
81 - Compressed GBRG Bayer format used by the gspca driver.
82 * .. _V4L2-PIX-FMT-PAC207:
83
84 - ``V4L2_PIX_FMT_PAC207``
85 - 'P207'
86 - Compressed BGGR Bayer format used by the gspca driver.
87 * .. _V4L2-PIX-FMT-MR97310A:
88
89 - ``V4L2_PIX_FMT_MR97310A``
90 - 'M310'
91 - Compressed BGGR Bayer format used by the gspca driver.
92 * .. _V4L2-PIX-FMT-JL2005BCD:
93
94 - ``V4L2_PIX_FMT_JL2005BCD``
95 - 'JL20'
96 - JPEG compressed RGGB Bayer format used by the gspca driver.
97 * .. _V4L2-PIX-FMT-OV511:
98
99 - ``V4L2_PIX_FMT_OV511``
100 - 'O511'
101 - OV511 JPEG format used by the gspca driver.
102 * .. _V4L2-PIX-FMT-OV518:
103
104 - ``V4L2_PIX_FMT_OV518``
105 - 'O518'
106 - OV518 JPEG format used by the gspca driver.
107 * .. _V4L2-PIX-FMT-PJPG:
108
109 - ``V4L2_PIX_FMT_PJPG``
110 - 'PJPG'
111 - Pixart 73xx JPEG format used by the gspca driver.
112 * .. _V4L2-PIX-FMT-SE401:
113
114 - ``V4L2_PIX_FMT_SE401``
115 - 'S401'
116 - Compressed RGB format used by the gspca se401 driver
117 * .. _V4L2-PIX-FMT-SQ905C:
118
119 - ``V4L2_PIX_FMT_SQ905C``
120 - '905C'
121 - Compressed RGGB bayer format used by the gspca driver.
122 * .. _V4L2-PIX-FMT-MJPEG:
123
124 - ``V4L2_PIX_FMT_MJPEG``
125 - 'MJPG'
126 - Compressed format used by the Zoran driver
127 * .. _V4L2-PIX-FMT-PWC1:
128
129 - ``V4L2_PIX_FMT_PWC1``
130 - 'PWC1'
131 - Compressed format of the PWC driver.
132 * .. _V4L2-PIX-FMT-PWC2:
133
134 - ``V4L2_PIX_FMT_PWC2``
135 - 'PWC2'
136 - Compressed format of the PWC driver.
137 * .. _V4L2-PIX-FMT-SN9C10X:
138
139 - ``V4L2_PIX_FMT_SN9C10X``
140 - 'S910'
141 - Compressed format of the SN9C102 driver.
142 * .. _V4L2-PIX-FMT-SN9C20X-I420:
143
144 - ``V4L2_PIX_FMT_SN9C20X_I420``
145 - 'S920'
146 - YUV 4:2:0 format of the gspca sn9c20x driver.
147 * .. _V4L2-PIX-FMT-SN9C2028:
148
149 - ``V4L2_PIX_FMT_SN9C2028``
150 - 'SONX'
151 - Compressed GBRG bayer format of the gspca sn9c2028 driver.
152 * .. _V4L2-PIX-FMT-STV0680:
153
154 - ``V4L2_PIX_FMT_STV0680``
155 - 'S680'
156 - Bayer format of the gspca stv0680 driver.
157 * .. _V4L2-PIX-FMT-WNVA:
158
159 - ``V4L2_PIX_FMT_WNVA``
160 - 'WNVA'
161 - Used by the Winnov Videum driver,
162 `http://www.thedirks.org/winnov/ <http://www.thedirks.org/winnov/>`__
163 * .. _V4L2-PIX-FMT-TM6000:
164
165 - ``V4L2_PIX_FMT_TM6000``
166 - 'TM60'
167 - Used by Trident tm6000
168 * .. _V4L2-PIX-FMT-CIT-YYVYUY:
169
170 - ``V4L2_PIX_FMT_CIT_YYVYUY``
171 - 'CITV'
172 - Used by xirlink CIT, found at IBM webcams.
173
174 Uses one line of Y then 1 line of VYUY
175 * .. _V4L2-PIX-FMT-KONICA420:
176
177 - ``V4L2_PIX_FMT_KONICA420``
178 - 'KONI'
179 - Used by Konica webcams.
180
181 YUV420 planar in blocks of 256 pixels.
182 * .. _V4L2-PIX-FMT-YYUV:
183
184 - ``V4L2_PIX_FMT_YYUV``
185 - 'YYUV'
186 - unknown
187 * .. _V4L2-PIX-FMT-Y4:
188
189 - ``V4L2_PIX_FMT_Y4``
190 - 'Y04 '
191 - Old 4-bit greyscale format. Only the most significant 4 bits of
192 each byte are used, the other bits are set to 0.
193 * .. _V4L2-PIX-FMT-Y6:
194
195 - ``V4L2_PIX_FMT_Y6``
196 - 'Y06 '
197 - Old 6-bit greyscale format. Only the most significant 6 bits of
198 each byte are used, the other bits are set to 0.
199 * .. _V4L2-PIX-FMT-S5C-UYVY-JPG:
200
201 - ``V4L2_PIX_FMT_S5C_UYVY_JPG``
202 - 'S5CI'
203 - Two-planar format used by Samsung S5C73MX cameras. The first plane
204 contains interleaved JPEG and UYVY image data, followed by meta
205 data in form of an array of offsets to the UYVY data blocks. The
206 actual pointer array follows immediately the interleaved JPEG/UYVY
207 data, the number of entries in this array equals the height of the
208 UYVY image. Each entry is a 4-byte unsigned integer in big endian
209 order and it's an offset to a single pixel line of the UYVY image.
210 The first plane can start either with JPEG or UYVY data chunk. The
211 size of a single UYVY block equals the UYVY image's width
212 multiplied by 2. The size of a JPEG chunk depends on the image and
213 can vary with each line.
214
215 The second plane, at an offset of 4084 bytes, contains a 4-byte
216 offset to the pointer array in the first plane. This offset is
217 followed by a 4-byte value indicating size of the pointer array.
218 All numbers in the second plane are also in big endian order.
219 Remaining data in the second plane is undefined. The information
220 in the second plane allows to easily find location of the pointer
221 array, which can be different for each frame. The size of the
222 pointer array is constant for given UYVY image height.
223
224 In order to extract UYVY and JPEG frames an application can
225 initially set a data pointer to the start of first plane and then
226 add an offset from the first entry of the pointers table. Such a
227 pointer indicates start of an UYVY image pixel line. Whole UYVY
228 line can be copied to a separate buffer. These steps should be
229 repeated for each line, i.e. the number of entries in the pointer
230 array. Anything what's in between the UYVY lines is JPEG data and
231 should be concatenated to form the JPEG stream.
232 * .. _V4L2-PIX-FMT-MT21C:
233
234 - ``V4L2_PIX_FMT_MT21C``
235 - 'MT21'
236 - Compressed two-planar YVU420 format used by Mediatek MT8173, MT8192,
237 MT8195 and more. The compression is lossless. This format have
238 similitude with ``V4L2_PIX_FMT_MM21`` in term of alignment and tiling.
239 It remains an opaque intermediate format and the MDP hardware must be
240 used to convert ``V4L2_PIX_FMT_MT21C`` to ``V4L2_PIX_FMT_NV12M``,
241 ``V4L2_PIX_FMT_YUV420M`` or ``V4L2_PIX_FMT_YVU420``.
242 * .. _V4L2-PIX-FMT-QC08C:
243
244 - ``V4L2_PIX_FMT_QC08C``
245 - 'QC08C'
246 - Compressed Macro-tile 8-Bit YUV420 format used by Qualcomm platforms.
247 It is an opaque intermediate format. The used compression is lossless
248 and it is used by various multimedia hardware blocks like GPU, display
249 controllers, ISP and video accelerators.
250 It contains four planes for progressive video and eight planes for
251 interlaced video.
252 * .. _V4L2-PIX-FMT-QC10C:
253
254 - ``V4L2_PIX_FMT_QC10C``
255 - 'QC10C'
256 - Compressed Macro-tile 10-Bit YUV420 format used by Qualcomm platforms.
257 It is an opaque intermediate format. The used compression is lossless
258 and it is used by various multimedia hardware blocks like GPU, display
259 controllers, ISP and video accelerators.
260 It contains four planes for progressive video.
261 * .. _V4L2-PIX-FMT-AJPG:
262
263 - ``V4L2_PIX_FMT_AJPG``
264 - 'AJPG'
265 - ASPEED JPEG format used by the aspeed-video driver on Aspeed platforms,
266 which is generally adapted for remote KVM.
267 On each frame compression, I will compare the new frame with previous
268 one to decide which macroblock's data is changed, and only the changed
269 macroblocks will be compressed.
270
271 The implementation is based on AST2600 A3 datasheet, revision 0.9, which
272 is not publicly available. Or you can reference Video stream data format
273 – ASPEED mode compression of SDK_User_Guide which available on
274 `github <https://github.com/AspeedTech-BMC/openbmc/releases/>`__.
275
276 Decoder's implementation can be found here,
277 `aspeed_codec <https://github.com/AspeedTech-BMC/aspeed_codec/>`__
278 * .. _V4L2-PIX-FMT-HEXTILE:
279
280 - ``V4L2_PIX_FMT_HEXTILE``
281 - 'HXTL'
282 - Compressed format used by Nuvoton NPCM video driver. This format is
283 defined in Remote Framebuffer Protocol (RFC 6143, chapter 7.7.4 Hextile
284 Encoding).
285 .. raw:: latex
286
287 \normalsize
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