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FROMGIT: media: add RealVideo format RV30 and RV40

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RealVideo, or also spelled as Real Video, is a suite of proprietary
video compression formats developed by RealNetworks -
the specific format changes with the version.
RealVideo codecs are identified by four-character codes.
RV30 and RV40 are RealNetworks' proprietary H.264-based codecs.

Bug: 279270030
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
(cherry picked from commit ec9aa62a1e
    https://git.linuxtv.org/mchehab/media-next.git master)
Change-Id: I8388fb2764a25543a3b155e5ce65f8af3ac005e4
Signed-off-by: Jindong Yue <jindong.yue@nxp.com>
This commit is contained in:
Ming Qian
2023-01-17 02:31:54 +00:00
committed by Matthias Männich
parent 61c48ea296
commit 4dbfc3a024
3 changed files with 24 additions and 0 deletions
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20
Documentation/userspace-api/media/v4l/pixfmt-compressed.rst
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@@ -237,6 +237,26 @@ Compressed Formats
Metadata associated with the frame to decode is required to be passed
through the ``V4L2_CID_STATELESS_FWHT_PARAMS`` control.
See the :ref:`associated Codec Control ID <codec-stateless-fwht>`.
* .. _V4L2-PIX-FMT-RV30:
- ``V4L2_PIX_FMT_RV30``
- 'RV30'
- RealVideo, or also spelled as Real Video, is a suite of
proprietary video compression formats developed by
RealNetworks - the specific format changes with the version.
RealVideo codecs are identified by four-character codes.
RV30 corresponds to RealVideo 8, suspected to be based
largely on an early draft of H.264
* .. _V4L2-PIX-FMT-RV40:
- ``V4L2_PIX_FMT_RV40``
- 'RV40'
- RV40 represents RealVideo 9 and RealVideo 10.
RealVideo 9, suspected to be based on H.264.
RealVideo 10, aka RV9 EHQ, This refers to an improved encoder
for the RV9 format that is fully backwards compatible with
RV9 players - the format and decoder did not change, only
the encoder did. As a result, it uses the same FourCC.
.. raw:: latex

2
drivers/media/v4l2-core/v4l2-ioctl.c
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@@ -1477,6 +1477,8 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt)
case V4L2_PIX_FMT_FWHT: descr = "FWHT"; break; /* used in vicodec */
case V4L2_PIX_FMT_FWHT_STATELESS: descr = "FWHT Stateless"; break; /* used in vicodec */
case V4L2_PIX_FMT_SPK: descr = "Sorenson Spark"; break;
case V4L2_PIX_FMT_RV30: descr = "RealVideo 8"; break;
case V4L2_PIX_FMT_RV40: descr = "RealVideo 9 & 10"; break;
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;

2
include/uapi/linux/videodev2.h
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@@ -738,6 +738,8 @@ struct v4l2_pix_format {
#define V4L2_PIX_FMT_H264_SLICE v4l2_fourcc('S', '2', '6', '4') /* H264 parsed slices */
#define V4L2_PIX_FMT_HEVC_SLICE v4l2_fourcc('S', '2', '6', '5') /* HEVC parsed slices */
#define V4L2_PIX_FMT_SPK v4l2_fourcc('S', 'P', 'K', '0') /* Sorenson Spark */
#define V4L2_PIX_FMT_RV30 v4l2_fourcc('R', 'V', '3', '0') /* RealVideo 8 */
#define V4L2_PIX_FMT_RV40 v4l2_fourcc('R', 'V', '4', '0') /* RealVideo 9 & 10 */
/* Vendor-specific formats */
#define V4L2_PIX_FMT_CPIA1 v4l2_fourcc('C', 'P', 'I', 'A') /* cpia1 YUV */