From patchwork Tue Jul 15 08:19:16 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Milan Zamazal X-Patchwork-Id: 23816 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 526D1C3237 for ; Tue, 15 Jul 2025 08:20:09 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id D2F9068F69; Tue, 15 Jul 2025 10:20:07 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.b="TOrHf70n"; 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 6DEDA68F5D for ; Tue, 15 Jul 2025 10:19:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1752567589; 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=vkxUbx+QDCvVHRE9hv/2widlkeeq6+n4CrZnMWdpOqk=; b=TOrHf70nAPEO5FAFCe/xwOktG++jjLzFgOMPUhMWYeZ74AqqQB1ISlmECFyLwTehL0cLsa /A5FWKB8711mdhC+JYjzxa9kgMjY8gdLgW8J2b1H9TBEHu2HtTeSNjVSZ/W3Lv2gqbNJ94 QSMRbcFsSe+Dm3SBhm+njI3wQKKI8BA= 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-467-oetVOQmuMbGZCnZxYQscag-1; Tue, 15 Jul 2025 04:19:47 -0400 X-MC-Unique: oetVOQmuMbGZCnZxYQscag-1 X-Mimecast-MFC-AGG-ID: oetVOQmuMbGZCnZxYQscag_1752567586 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 12ABF180034E; Tue, 15 Jul 2025 08:19:46 +0000 (UTC) Received: from mzamazal-thinkpadp1gen7.tpbc.com (unknown [10.43.17.38]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 76F5C18002B1; Tue, 15 Jul 2025 08:19:44 +0000 (UTC) From: Milan Zamazal To: libcamera-devel@lists.libcamera.org Cc: Milan Zamazal , Kieran Bingham , =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= , Laurent Pinchart Subject: [PATCH v14 09/12] libcamera: software_isp: Make input buffer copying configurable Date: Tue, 15 Jul 2025 10:19:16 +0200 Message-ID: <20250715081921.5522-10-mzamazal@redhat.com> In-Reply-To: <20250715081921.5522-1-mzamazal@redhat.com> References: <20250715081921.5522-1-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: UTlKZ_Q9mnx4HRs6Pz3VOdmO56VwgJTUl2xtygFgZjY_1752567586 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" On some platforms, working directly on the input buffer is very slow due to disabled caching. This is why we copy the input buffer into standard (cached) memory. This is an unnecessary overhead on platforms with cached buffers. Let's make input buffer copying configurable. The default is still copying, as it's overhead is much lower than contingent operations on non-cached memory. Ideally, we should improve this in future to set the default to non-copying if we can be sure under observable circumstances that we are working with cached buffers. Completes software ISP TODO #6. Signed-off-by: Milan Zamazal --- Documentation/runtime_configuration.rst | 2 ++ src/libcamera/software_isp/TODO | 11 ----------- src/libcamera/software_isp/debayer_cpu.cpp | 7 +++++-- src/libcamera/software_isp/debayer_cpu.h | 3 ++- src/libcamera/software_isp/software_isp.cpp | 3 ++- 5 files changed, 11 insertions(+), 15 deletions(-) diff --git a/Documentation/runtime_configuration.rst b/Documentation/runtime_configuration.rst index aaf158ef4..db8e27b03 100644 --- a/Documentation/runtime_configuration.rst +++ b/Documentation/runtime_configuration.rst @@ -49,6 +49,7 @@ file structure: pipeline_handler: ... simple: + copy_input_buffer: # true/false supported_devices: - driver: # driver name, e.g. `mxc-isi` software_isp: # true/false @@ -80,6 +81,7 @@ Configuration file example min_unicam_buffers: 2 min_total_unicam_buffers: 2 simple: + copy_input_buffer: false supported_devices: - driver: mxc-isi software_isp: true diff --git a/src/libcamera/software_isp/TODO b/src/libcamera/software_isp/TODO index a50db668e..2c919f442 100644 --- a/src/libcamera/software_isp/TODO +++ b/src/libcamera/software_isp/TODO @@ -71,17 +71,6 @@ per-frame buffers like we do for hardware ISPs. --- -6. Input buffer copying configuration - -> DebayerCpu::DebayerCpu(std::unique_ptr stats) -> : stats_(std::move(stats)), gammaCorrection_(1.0) -> { -> enableInputMemcpy_ = true; - -Set this appropriately and/or make it configurable. - ---- - 7. Performance measurement configuration > void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams params) diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp index 66f6038c1..704d4e487 100644 --- a/src/libcamera/software_isp/debayer_cpu.cpp +++ b/src/libcamera/software_isp/debayer_cpu.cpp @@ -24,6 +24,7 @@ #include "libcamera/internal/bayer_format.h" #include "libcamera/internal/dma_buf_allocator.h" #include "libcamera/internal/framebuffer.h" +#include "libcamera/internal/global_configuration.h" #include "libcamera/internal/mapped_framebuffer.h" namespace libcamera { @@ -38,8 +39,9 @@ namespace libcamera { /** * \brief Constructs a DebayerCpu object * \param[in] stats Pointer to the stats object to use + * \param[in] configuration The global configuration */ -DebayerCpu::DebayerCpu(std::unique_ptr stats) +DebayerCpu::DebayerCpu(std::unique_ptr stats, const GlobalConfiguration &configuration) : stats_(std::move(stats)) { /* @@ -50,7 +52,8 @@ DebayerCpu::DebayerCpu(std::unique_ptr stats) * always set it to true as the safer choice but this should be changed in * future. */ - enableInputMemcpy_ = true; + enableInputMemcpy_ = + configuration.option({ "pipelines", "simple", "copy_input_buffer" }).value_or(true); /* Initialize color lookup tables */ for (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) { diff --git a/src/libcamera/software_isp/debayer_cpu.h b/src/libcamera/software_isp/debayer_cpu.h index 926195e98..2f35aa18b 100644 --- a/src/libcamera/software_isp/debayer_cpu.h +++ b/src/libcamera/software_isp/debayer_cpu.h @@ -18,6 +18,7 @@ #include #include "libcamera/internal/bayer_format.h" +#include "libcamera/internal/global_configuration.h" #include "debayer.h" #include "swstats_cpu.h" @@ -27,7 +28,7 @@ namespace libcamera { class DebayerCpu : public Debayer, public Object { public: - DebayerCpu(std::unique_ptr stats); + DebayerCpu(std::unique_ptr stats, const GlobalConfiguration &configuration); ~DebayerCpu(); int configure(const StreamConfiguration &inputCfg, diff --git a/src/libcamera/software_isp/software_isp.cpp b/src/libcamera/software_isp/software_isp.cpp index 28e2a360e..b7651b7d2 100644 --- a/src/libcamera/software_isp/software_isp.cpp +++ b/src/libcamera/software_isp/software_isp.cpp @@ -114,7 +114,8 @@ SoftwareIsp::SoftwareIsp(PipelineHandler *pipe, const CameraSensor *sensor, } stats->statsReady.connect(this, &SoftwareIsp::statsReady); - debayer_ = std::make_unique(std::move(stats)); + const GlobalConfiguration &configuration = pipe->cameraManager()->_d()->configuration(); + debayer_ = std::make_unique(std::move(stats), configuration); debayer_->inputBufferReady.connect(this, &SoftwareIsp::inputReady); debayer_->outputBufferReady.connect(this, &SoftwareIsp::outputReady);