From patchwork Sat Nov 1 19:35:55 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Milan Zamazal X-Patchwork-Id: 24940 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 D1923BDE4C for ; Sat, 1 Nov 2025 19:36:48 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 8D5C660A9E; Sat, 1 Nov 2025 20:36:48 +0100 (CET) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="EkKExqlL"; dkim-atps=neutral Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id B160D60A81 for ; Sat, 1 Nov 2025 20:36:46 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1762025805; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=N/DS8xW3eRVRJUxEbRYuZYNqDjL0TZaUL7LMJbpJf2k=; b=EkKExqlLRRPY8/lHkSddN7+cWTrQxKRfPo5S7Kva50bPJrqfK9NWjGgnRTAGlX+1CIVMdW D25eVlSrXUVcjnj46Op80qzQZdURILApvj4IbwQ/Tr2GaaV5WB7Gkiv7kOe/hh+FhsnLVU J/zDMJuZJaOd9Gc+opFZjrR5lWkYY78= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-263-ZAWvBuiANcuf4P6wico26Q-1; Sat, 01 Nov 2025 15:36:27 -0400 X-MC-Unique: ZAWvBuiANcuf4P6wico26Q-1 X-Mimecast-MFC-AGG-ID: ZAWvBuiANcuf4P6wico26Q_1762025785 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id C3AE519560B5; Sat, 1 Nov 2025 19:36:25 +0000 (UTC) Received: from mzamazal-thinkpadp1gen7.tpbc.com (unknown [10.44.32.26]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 1C7861955BE3; Sat, 1 Nov 2025 19:36:22 +0000 (UTC) From: Milan Zamazal To: libcamera-devel@lists.libcamera.org Cc: Milan Zamazal , Laurent Pinchart , Kieran Bingham , =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= , Paul Elder , Umang Jain Subject: [PATCH v14 6/8] libcamera: simple: Set the number of software ISP streams to 2 Date: Sat, 1 Nov 2025 20:35:55 +0100 Message-ID: <20251101193558.38279-7-mzamazal@redhat.com> In-Reply-To: <20251101193558.38279-1-mzamazal@redhat.com> References: <20251101193558.38279-1-mzamazal@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: OPcaMY9J5GvQETn-Wktp-AMWJaGRSQwW3jtztA03Tcs_1762025785 X-Mimecast-Originator: redhat.com content-type: text/plain; charset="US-ASCII"; x-default=true 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" When software ISP is enabled, we want to be able to provide a raw stream in addition to the processed stream. For this purpose, we need two streams. If only the processed stream is requested, it doesn't harm to allocate two. The number of streams is determined as a camera property in the pipeline matching. To be able to produce both raw and processed output, two streams must be provided. The actual number of streams needed (one or two) is determined only in SimplePipelineHandler::validate(). In theory, software ISP could produce multiple processed streams but this is out of scope of this patch series. Hence two streams are sufficient at the moment. When software ISP is not enabled, the camera won't be able to produce multiple streams (assuming there's no hardware converter) and only single stream should be allocated as before. The simple pipeline handler assumes there's a linear pipeline from the camera sensor to a video capture device, and only supports a single stream. Branches in the hardware pipeline that would allow capturing multiple streams from the same camera sensor are not supported. We have no plan to change that, as a device that can produce multiple streams will likely be better supported by a dedicated pipeline handler. Signed-off-by: Milan Zamazal Reviewed-by: Umang Jain Signed-off-by: Milan Zamazal --- src/libcamera/pipeline/simple/simple.cpp | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp index eeb97ecdf..f2931d502 100644 --- a/src/libcamera/pipeline/simple/simple.cpp +++ b/src/libcamera/pipeline/simple/simple.cpp @@ -1809,6 +1809,16 @@ bool SimplePipelineHandler::matchDevice(MediaDevice *media, } } + if (info.swIspEnabled) { + /* + * When the software ISP is enabled, the simple pipeline handler + * exposes the raw stream, giving a total of two streams. This + * is mutually exclusive with the presence of a converter. + */ + ASSERT(!converter_); + numStreams = 2; + } + swIspEnabled_ = info.swIspEnabled; const GlobalConfiguration &configuration = cameraManager()->_d()->configuration(); for (GlobalConfiguration::Configuration entry :