From patchwork Fri Oct 29 13:23:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Plowman X-Patchwork-Id: 14428 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 965F6BF415 for ; Fri, 29 Oct 2021 13:23:57 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 4BD9160125; Fri, 29 Oct 2021 15:23:57 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=raspberrypi.com header.i=@raspberrypi.com header.b="ocC45q5F"; dkim-atps=neutral Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id A9C8C600B8 for ; Fri, 29 Oct 2021 15:23:49 +0200 (CEST) Received: by mail-wr1-x429.google.com with SMTP id i5so8493028wrb.2 for ; Fri, 29 Oct 2021 06:23:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=raspberrypi.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3jzpKNdq0T31XWyv1nf4OXskRk3Z5TSZ2eDhnU9oflA=; b=ocC45q5F/IvL9+8Khthxc5N/qZocfzQ5zm2z5hYBcAIGkFK92tn5Pk9cPUkR1mXBtY t8Gmfrwb6sEXk9qfVbVXVaCiLMN98o/JtQ15lhmNn1UowCEUwfW7AsKQvIsNNrChklzP L0e+1F2PSYac1QlAkZxA2W1zruRsWIgWkkMmYHp94FHagpYnOtULviP/w0sFoUSrWL8w InULuBQbxt62jYsmi6bKzRSjx6xdcbVmHNCN2S//7p0fOyVi2IJuCjpddJnBSnvSnSa6 o6Q6AH+G4+M32HhIOWRrzD92aCb4/E6r/DZC1q3/cs02voL1m+egOs/Cz5ktPzTAW9bF ViYw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3jzpKNdq0T31XWyv1nf4OXskRk3Z5TSZ2eDhnU9oflA=; b=WSNFbm+BzAW7YyPMUQcOFON3yGq89H6J8gkwyko67MMkVe0G2iknP26wUKnGYGDvMT zKIW9NkZRRSpT7VmmU06qPCakb9PhzW86OWIqmcV0/NLaZeiBPSI+DpULvSdI9Szyn6B q9s1zw9T/xvS1fVZpU/sDlxyt0Q2AtgEuIPIpthYz7s7Akqy6xCCizt0mFvrQv8kyFux fXz20CkZ0zyZPY9BUqLLuYf6OboLQFEXPOmvgSitaLLI11/Zgxzp9FdvHOXWfFTllHhx N+ct0ba6niQrTkmcS8J/8EVPc2Cy4qyZA2Af6ry6l5BqVNF7ZNIDksNKzAk3f92MoRcy Y2hQ== X-Gm-Message-State: AOAM533o4Lr1y66Hi89zwXIop7fmPRVHS7bzCXv9dUNmWdWfaOVkQTQG 7syWYkX7bW1H5BTkR0awPH7BrEGkTqmX2A== X-Google-Smtp-Source: ABdhPJwLmE4nwlQNakyRBSRFxHmEjK+rDPDC8u5xJ1NNrWS7tfw5OCWliRrM2piD9ktSHArYYK9xSA== X-Received: by 2002:a5d:4845:: with SMTP id n5mr14106615wrs.251.1635513829031; Fri, 29 Oct 2021 06:23:49 -0700 (PDT) Received: from pi4-davidp.pitowers.org ([2a00:1098:3142:14:1ce1:9965:4328:89c4]) by smtp.gmail.com with ESMTPSA id l7sm111934wrf.31.2021.10.29.06.23.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Oct 2021 06:23:48 -0700 (PDT) From: David Plowman To: libcamera-devel@lists.libcamera.org Date: Fri, 29 Oct 2021 14:23:40 +0100 Message-Id: <20211029132343.1629-5-david.plowman@raspberrypi.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20211029132343.1629-1-david.plowman@raspberrypi.com> References: <20211029132343.1629-1-david.plowman@raspberrypi.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v4 4/7] libcamera: Support passing ColorSpaces to V4L2 video devices 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" The ColorSpace from the StreamConfiguration is now handled appropriately in the V4L2VideoDevice. Signed-off-by: David Plowman --- include/libcamera/internal/v4l2_videodevice.h | 2 + src/libcamera/v4l2_videodevice.cpp | 67 +++++++++++++++++-- 2 files changed, 65 insertions(+), 4 deletions(-) diff --git a/include/libcamera/internal/v4l2_videodevice.h b/include/libcamera/internal/v4l2_videodevice.h index a1c458e4..6ca749c1 100644 --- a/include/libcamera/internal/v4l2_videodevice.h +++ b/include/libcamera/internal/v4l2_videodevice.h @@ -20,6 +20,7 @@ #include #include +#include #include #include #include @@ -167,6 +168,7 @@ public: V4L2PixelFormat fourcc; Size size; + ColorSpace colorSpace; std::array planes; unsigned int planesCount = 0; diff --git a/src/libcamera/v4l2_videodevice.cpp b/src/libcamera/v4l2_videodevice.cpp index 4f04212d..ccf3d28c 100644 --- a/src/libcamera/v4l2_videodevice.cpp +++ b/src/libcamera/v4l2_videodevice.cpp @@ -370,17 +370,29 @@ bool V4L2BufferCache::Entry::operator==(const FrameBuffer &buffer) const * \brief The plane line stride (in bytes) */ +/** + * \var V4L2DeviceFormat::fourcc + * \brief The fourcc code describing the pixel encoding scheme + * + * The fourcc code, as defined by the V4L2 API with the V4L2_PIX_FMT_* macros, + * that identifies the image format pixel encoding scheme. + */ + /** * \var V4L2DeviceFormat::size * \brief The image size in pixels */ /** - * \var V4L2DeviceFormat::fourcc - * \brief The fourcc code describing the pixel encoding scheme + * \var V4L2DeviceFormat::colorSpace + * \brief The color space of the pixels * - * The fourcc code, as defined by the V4L2 API with the V4L2_PIX_FMT_* macros, - * that identifies the image format pixel encoding scheme. + * When setting or trying a format, passing in "Undefined" fields in the + * ColorSpace is not permitted because the driver will then make an + * arbitrary choice of its own. Choices made by the driver will be + * passed back in the normal way, though note that "Undefined" values can + * be returned if the device has chosen something that the ColorSpace + * class cannot represent. */ /** @@ -879,6 +891,12 @@ int V4L2VideoDevice::getFormatMultiplane(V4L2DeviceFormat *format) format->fourcc = V4L2PixelFormat(pix->pixelformat); format->planesCount = pix->num_planes; + format->colorSpace = toColorSpace(*pix); + if (!format->colorSpace.isFullyDefined()) + LOG(V4L2, Warning) + << "Retrieved undefined color space: " + << format->colorSpace.toString(); + for (unsigned int i = 0; i < format->planesCount; ++i) { format->planes[i].bpl = pix->plane_fmt[i].bytesperline; format->planes[i].size = pix->plane_fmt[i].sizeimage; @@ -893,6 +911,11 @@ int V4L2VideoDevice::trySetFormatMultiplane(V4L2DeviceFormat *format, bool set) struct v4l2_pix_format_mplane *pix = &v4l2Format.fmt.pix_mp; int ret; + if (!format->colorSpace.isFullyDefined()) + LOG(V4L2, Error) + << "Trying to set undefined color space: " + << format->colorSpace.toString(); + v4l2Format.type = bufferType_; pix->width = format->size.width; pix->height = format->size.height; @@ -900,6 +923,12 @@ int V4L2VideoDevice::trySetFormatMultiplane(V4L2DeviceFormat *format, bool set) pix->num_planes = format->planesCount; pix->field = V4L2_FIELD_NONE; + ret = fromColorSpace(format->colorSpace, *pix); + if (ret < 0) + LOG(V4L2, Warning) + << "Setting color space unrecognised by V4L2: " + << format->colorSpace.toString(); + ASSERT(pix->num_planes <= std::size(pix->plane_fmt)); for (unsigned int i = 0; i < pix->num_planes; ++i) { @@ -928,6 +957,12 @@ int V4L2VideoDevice::trySetFormatMultiplane(V4L2DeviceFormat *format, bool set) format->planes[i].size = pix->plane_fmt[i].sizeimage; } + format->colorSpace = toColorSpace(*pix); + if (!format->colorSpace.isFullyDefined()) + LOG(V4L2, Warning) + << "Undefined color space has been set: " + << format->colorSpace.toString(); + return 0; } @@ -951,6 +986,12 @@ int V4L2VideoDevice::getFormatSingleplane(V4L2DeviceFormat *format) format->planes[0].bpl = pix->bytesperline; format->planes[0].size = pix->sizeimage; + format->colorSpace = toColorSpace(*pix); + if (!format->colorSpace.isFullyDefined()) + LOG(V4L2, Warning) + << "Retrieved undefined color space: " + << format->colorSpace.toString(); + return 0; } @@ -960,12 +1001,24 @@ int V4L2VideoDevice::trySetFormatSingleplane(V4L2DeviceFormat *format, bool set) struct v4l2_pix_format *pix = &v4l2Format.fmt.pix; int ret; + if (!format->colorSpace.isFullyDefined()) + LOG(V4L2, Error) + << "Trying to set undefined color space: " + << format->colorSpace.toString(); + v4l2Format.type = bufferType_; pix->width = format->size.width; pix->height = format->size.height; pix->pixelformat = format->fourcc; pix->bytesperline = format->planes[0].bpl; pix->field = V4L2_FIELD_NONE; + + ret = fromColorSpace(format->colorSpace, *pix); + if (ret < 0) + LOG(V4L2, Warning) + << "Set color space unrecognised by V4L2: " + << format->colorSpace.toString(); + ret = ioctl(set ? VIDIOC_S_FMT : VIDIOC_TRY_FMT, &v4l2Format); if (ret) { LOG(V4L2, Error) @@ -985,6 +1038,12 @@ int V4L2VideoDevice::trySetFormatSingleplane(V4L2DeviceFormat *format, bool set) format->planes[0].bpl = pix->bytesperline; format->planes[0].size = pix->sizeimage; + format->colorSpace = toColorSpace(*pix); + if (!format->colorSpace.isFullyDefined()) + LOG(V4L2, Warning) + << "Undefined color space has been set: " + << format->colorSpace.toString(); + return 0; }