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media: videodev.h: add PIX_FMT_FWHT for use with vicodec

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Add a new pixelformat for the vicodec software codec using the
Fast Walsh Hadamard Transform.

Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hans Verkuil 2018-07-04 10:13:47 -04:00 committed by Mauro Carvalho Chehab
parent 45841a9773
commit 62c3fce041
3 changed files with 9 additions and 0 deletions
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7
Documentation/media/uapi/v4l/pixfmt-compressed.rst
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@ -95,3 +95,10 @@ Compressed Formats
- ``V4L2_PIX_FMT_HEVC``
- 'HEVC'
- HEVC/H.265 video elementary stream.
* .. _V4L2-PIX-FMT-FWHT:
- ``V4L2_PIX_FMT_FWHT``
- 'FWHT'
- Video elementary stream using a codec based on the Fast Walsh Hadamard
Transform. This codec is implemented by the vicodec ('Virtual Codec')
driver. See the vicodec-codec.h header for more details.

1
drivers/media/v4l2-core/v4l2-ioctl.c
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@ -1311,6 +1311,7 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_VP8: descr = "VP8"; break;
case V4L2_PIX_FMT_VP9: descr = "VP9"; break;
case V4L2_PIX_FMT_HEVC: descr = "HEVC"; break; /* aka H.265 */
case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
case V4L2_PIX_FMT_CPIA1: descr = "GSPCA CPiA YUV"; break;
case V4L2_PIX_FMT_WNVA: descr = "WNVA"; break;
case V4L2_PIX_FMT_SN9C10X: descr = "GSPCA SN9C10X"; break;

1
include/uapi/linux/videodev2.h
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@ -636,6 +636,7 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_VP8 v4l2_fourcc('V', 'P', '8', '0') /* VP8 */
#define V4L2_PIX_FMT_VP9 v4l2_fourcc('V', 'P', '9', '0') /* VP9 */
#define V4L2_PIX_FMT_HEVC v4l2_fourcc('H', 'E', 'V', 'C') /* HEVC aka H.265 */
#define V4L2_PIX_FMT_FWHT v4l2_fourcc('F', 'W', 'H', 'T') /* Fast Walsh Hadamard Transform (vicodec) */
/* Vendor-specific formats */
#define V4L2_PIX_FMT_CPIA1 v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */