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Tue, 7 Sep 2021 09:50:05 +0000 From: Ming Qian To: mchehab@kernel.org, shawnguo@kernel.org, robh+dt@kernel.org, s.hauer@pengutronix.de Cc: hverkuil-cisco@xs4all.nl, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, aisheng.dong@nxp.com, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v8 04/15] media:Add v4l2 event codec_error and skip Date: Tue, 7 Sep 2021 17:49:11 +0800 Message-Id: <647f84c1e7c2a48d6492d38fa4f06586235500b8.1631002447.git.ming.qian@nxp.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: References: X-ClientProxiedBy: SG2PR02CA0097.apcprd02.prod.outlook.com (2603:1096:4:92::13) To AM6PR04MB6341.eurprd04.prod.outlook.com (2603:10a6:20b:d8::14) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from lsv11149.swis.cn-sha01.nxp.com (119.31.174.70) by SG2PR02CA0097.apcprd02.prod.outlook.com (2603:1096:4:92::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4478.19 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 00a46d25-a0f8-4c10-29b0-08d971e4de0b X-MS-Exchange-CrossTenant-AuthSource: AM6PR04MB6341.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Sep 2021 09:50:04.4379 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: F1iTdVNCWlr5hIy8Jk/iT6v0EhDCGprTNX1eJAXjAbx8k1A0xpKWOz82xncDmS0A80miK8n3LMYbTMzS/z3k6A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR04MB7767 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org The codec_error event can tell client that there are some error occurs in the decoder engine. The skip event can tell the client that there are a frame has been decoded, but it won't be outputed. Signed-off-by: Ming Qian Signed-off-by: Shijie Qin Signed-off-by: Zhou Peng --- .../userspace-api/media/v4l/vidioc-dqevent.rst | 12 ++++++++++++ include/uapi/linux/videodev2.h | 2 ++ 2 files changed, 14 insertions(+) diff --git a/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst b/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst index 6eb40073c906..87d40ad25604 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-dqevent.rst @@ -182,6 +182,18 @@ call. the regions changes. This event has a struct :c:type:`v4l2_event_motion_det` associated with it. + * - ``V4L2_EVENT_CODEC_ERROR`` + - 7 + - This event is triggered when some error occurs inside the codec engine, + usually it can be replaced by a POLLERR event, but in some cases, the POLLERR + may cause the application to exit, but this event can allow the application to + handle the codec error without exiting. + * - ``V4L2_EVENT_SKIP`` + - 8 + - This event is triggered when one frame is decoded, but it won't be outputed + to the display. So the application can't get this frame, and the input frame count + is dismatch with the output frame count. And this evevt is telling the client to + handle this case. * - ``V4L2_EVENT_PRIVATE_START`` - 0x08000000 - Base event number for driver-private events. diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 5bb0682b4a23..c56640d42dc5 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -2369,6 +2369,8 @@ struct v4l2_streamparm { #define V4L2_EVENT_FRAME_SYNC 4 #define V4L2_EVENT_SOURCE_CHANGE 5 #define V4L2_EVENT_MOTION_DET 6 +#define V4L2_EVENT_CODEC_ERROR 7 +#define V4L2_EVENT_SKIP 8 #define V4L2_EVENT_PRIVATE_START 0x08000000 /* Payload for V4L2_EVENT_VSYNC */