From patchwork Wed Apr 21 16:03:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 12041 X-Patchwork-Delegate: jacopo@jmondi.org Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id 71625BDB17 for ; Wed, 21 Apr 2021 16:02:57 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 0549868850; Wed, 21 Apr 2021 18:02:57 +0200 (CEST) Received: from relay10.mail.gandi.net (relay10.mail.gandi.net [217.70.178.230]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 4482568850 for ; Wed, 21 Apr 2021 18:02:49 +0200 (CEST) Received: from uno.lan (93-34-118-233.ip49.fastwebnet.it [93.34.118.233]) (Authenticated sender: jacopo@jmondi.org) by relay10.mail.gandi.net (Postfix) with ESMTPSA id DD61F240012; Wed, 21 Apr 2021 16:02:48 +0000 (UTC) From: Jacopo Mondi To: libcamera-devel@lists.libcamera.org Date: Wed, 21 Apr 2021 18:03:12 +0200 Message-Id: <20210421160319.42251-10-jacopo@jmondi.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210421160319.42251-1-jacopo@jmondi.org> References: <20210421160319.42251-1-jacopo@jmondi.org> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v3 09/16] libcamera: simple: Report sensor timestamp X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Report the sensor's timestamp in the Request metadata using the completed buffer timestamp. The buffer's timestamp is recorded at DMA-transfer time, and it does not theoretically matches the 'start of exposure' definition. Record this with a \todo entry. Signed-off-by: Jacopo Mondi Reviewed-by: Hirokazu Honda Reviewed-by: Laurent Pinchart --- src/libcamera/pipeline/simple/simple.cpp | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp index f6095d38e97a..e1ee640b0a92 100644 --- a/src/libcamera/pipeline/simple/simple.cpp +++ b/src/libcamera/pipeline/simple/simple.cpp @@ -22,6 +22,7 @@ #include #include +#include #include #include @@ -1116,6 +1117,16 @@ void SimplePipelineHandler::bufferReady(FrameBuffer *buffer) return; } + /* + * Record the sensor's timestamp in the request metadata. + * + * \todo The sensor timestamp should be better estimated by connecting + * to the V4L2Device::frameStart signal if the platform provides it. + */ + Request *request = buffer->request(); + request->metadata().set(controls::SensorTimestamp, + buffer->metadata().timestamp); + /* * Queue the captured and the request buffer to the converter if format * conversion is needed. If there's no queued request, just requeue the @@ -1133,7 +1144,6 @@ void SimplePipelineHandler::bufferReady(FrameBuffer *buffer) } /* Otherwise simply complete the request. */ - Request *request = buffer->request(); completeBuffer(request, buffer); completeRequest(request); }