From patchwork Wed Jul 2 12:09:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Milan Zamazal X-Patchwork-Id: 23707 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 22A52BDCBF for ; Wed, 2 Jul 2025 12:10:46 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id CA21868E38; Wed, 2 Jul 2025 14:10:45 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="ZbJ4Kkoo"; 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 B4EDA68E32 for ; Wed, 2 Jul 2025 14:10:43 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1751458242; 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=WV5TobAHr8uumxWgXpvDFUT5+QWiq9S1NdaDg/nBheI=; b=ZbJ4KkooiE8TfAnDVgLUOJCHN4Aq0KSGFo8yoAsWELOt6njNJtFDA8eTDvcr3H70DlGzwZ J55cxe2zCpz1fFeCB+jpXQLKOu0v2UaaFoH3+0uLNhgkyk+VdipqsqGb9QoBiRZvzO7j6l 9YumzdTcrpF1I455WZ3Iu0EX4DpLouE= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-25-V4PFyCP6O1ifjlAikK9dkA-1; Wed, 02 Jul 2025 08:10:39 -0400 X-MC-Unique: V4PFyCP6O1ifjlAikK9dkA-1 X-Mimecast-MFC-AGG-ID: V4PFyCP6O1ifjlAikK9dkA_1751458238 Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (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-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 2092B18001D6; Wed, 2 Jul 2025 12:10:38 +0000 (UTC) Received: from mzamazal-thinkpadp1gen7.tpbc.com (unknown [10.44.33.1]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 209FC18003FC; Wed, 2 Jul 2025 12:10:34 +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 v8 02/10] libcamera: simple: Set the number of software ISP streams to 2 Date: Wed, 2 Jul 2025 14:09:58 +0200 Message-ID: <20250702121024.38728-3-mzamazal@redhat.com> In-Reply-To: <20250702121024.38728-1-mzamazal@redhat.com> References: <20250702121024.38728-1-mzamazal@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: gO5vd6vkiCO4flXfcJPcqZCu9IxLTHaeefKm2O_ShjY_1751458238 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. This is a hack for the lack of a better easy option. The number of streams is determined as a camera property in the pipeline matching. The actual number of streams needed (one or two) is determined only when examining roles in SimplePipelineHandler::generateConfiguration. 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 --- src/libcamera/pipeline/simple/simple.cpp | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp index d45480fe7..a900918db 100644 --- a/src/libcamera/pipeline/simple/simple.cpp +++ b/src/libcamera/pipeline/simple/simple.cpp @@ -1723,7 +1723,16 @@ bool SimplePipelineHandler::match(DeviceEnumerator *enumerator) } } - swIspEnabled_ = info->swIspEnabled; + 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 mutally exclusive with the presence of a converter. + */ + ASSERT(!converter_); + numStreams = 2; + swIspEnabled_ = true; + } /* Locate the sensors. */ std::vector sensors = locateSensors(media);