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Fri, 13 Jan 2023 04:13:27 +0000 From: Ming Qian To: mchehab@kernel.org, hverkuil-cisco@xs4all.nl Cc: shawnguo@kernel.org, robh+dt@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, xiahong.bao@nxp.com, eagle.zhou@nxp.com, tao.jiang_2@nxp.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 1/2] media: add RealVideo format RV30 and RV40 Date: Fri, 13 Jan 2023 12:13:06 +0800 Message-Id: <8cbe08de42af1ecf0df39970d57742445fd0d488.1673582851.git.ming.qian@nxp.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: References: X-ClientProxiedBy: SG2PR06CA0230.apcprd06.prod.outlook.com (2603:1096:4:ac::14) To AM6PR04MB6341.eurprd04.prod.outlook.com (2603:10a6:20b:d8::14) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB6341:EE_|AM8PR04MB7441:EE_ X-MS-Office365-Filtering-Correlation-Id: a0823b29-c3be-4f28-c09e-08daf51c855a X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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RealVideo codecs are identified by four-character codes. RV30 and RV40 are RealNetworks' proprietary H.264-based codecs. Signed-off-by: Ming Qian Reviewed-by: Nicolas Dufresne --- .../media/v4l/pixfmt-compressed.rst | 21 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-ioctl.c | 2 ++ include/uapi/linux/videodev2.h | 2 ++ 3 files changed, 25 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst index a0230f357680..50ac095c1f16 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt-compressed.rst @@ -237,6 +237,27 @@ 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 `. + * .. _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 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 diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 9b5b04b8aa69..0546b00d3fc9 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1473,6 +1473,8 @@ 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; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 262ef10cfa02..b121154a6e24 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -740,6 +740,8 @@ 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 */