{"id":3823,"url":"https://patchwork.libcamera.org/api/patches/3823/?format=json","web_url":"https://patchwork.libcamera.org/patch/3823/","project":{"id":1,"url":"https://patchwork.libcamera.org/api/projects/1/?format=json","name":"libcamera","link_name":"libcamera","list_id":"libcamera_core","list_email":"libcamera-devel@lists.libcamera.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20200519165543.30465-2-laurent.pinchart@ideasonboard.com>","date":"2020-05-19T16:55:42","name":"[libcamera-devel,v2,2/3] libcamera: pipeline: simple: converter: Add scaling support","commit_ref":"fd76304e005903d6fe7ad28fa537f356b1048454","pull_url":null,"state":"accepted","archived":false,"hash":"646f4db2d9bcd1639f45b6ff1fbd74ad1216fcdc","submitter":{"id":2,"url":"https://patchwork.libcamera.org/api/people/2/?format=json","name":"Laurent Pinchart","email":"laurent.pinchart@ideasonboard.com"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/3823/mbox/","series":[{"id":915,"url":"https://patchwork.libcamera.org/api/series/915/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=915","date":"2020-05-19T16:55:41","name":"[libcamera-devel,v2,1/3] libcamera: pipeline: simple: Add stride support","version":2,"mbox":"https://patchwork.libcamera.org/series/915/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/3823/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/3823/checks/","tags":{},"headers":{"Return-Path":"","Received":["from perceval.ideasonboard.com (perceval.ideasonboard.com\n\t[213.167.242.64])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 1E0116041F\n\tfor ;\n\tTue, 19 May 2020 18:55:58 +0200 (CEST)","from pendragon.bb.dnainternet.fi (81-175-216-236.bb.dnainternet.fi\n\t[81.175.216.236])\n\tby perceval.ideasonboard.com (Postfix) with ESMTPSA id AA3169CD\n\tfor ;\n\tTue, 19 May 2020 18:55:57 +0200 (CEST)"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key; \n\tunprotected) header.d=ideasonboard.com\n\theader.i=@ideasonboard.com\n\theader.b=\"AGDR3UBs\"; dkim-atps=neutral","DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com;\n\ts=mail; t=1589907357;\n\tbh=3G3Zug1duQL5eIFrXq9GAoEZXAUxMluKzehA9fmN8/E=;\n\th=From:To:Subject:Date:In-Reply-To:References:From;\n\tb=AGDR3UBsBgKijUU/ygshEv5G7uztKvGEAEmI/Ld5OEbMLA4gw5ioveJg3kCGljWEs\n\t56pojQ799MdUp8RONLGsvfFWAj0J9qtFteT1vHJW+T7xL1YDI68EMhWBZDtIsm+QtM\n\tPYRB01vz+spXQt34jKxIm1nb1db4wcyEuajrYsZE=","From":"Laurent Pinchart ","To":"libcamera-devel@lists.libcamera.org","Date":"Tue, 19 May 2020 19:55:42 +0300","Message-Id":"<20200519165543.30465-2-laurent.pinchart@ideasonboard.com>","X-Mailer":"git-send-email 2.26.2","In-Reply-To":"<20200519165543.30465-1-laurent.pinchart@ideasonboard.com>","References":"<20200519165543.30465-1-laurent.pinchart@ideasonboard.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v2 2/3] libcamera: pipeline: simple:\n\tconverter: Add scaling support","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","X-List-Received-Date":"Tue, 19 May 2020 16:55:58 -0000"},"content":"Extend the SimpleConverter to support scaling, with reporting of the\nminimum and maximum output sizes supported for a given input size.\n\nSigned-off-by: Laurent Pinchart \nReviewed-by: Niklas Söderlund \n---\n src/libcamera/pipeline/simple/converter.cpp | 58 ++++++++++++++++++---\n src/libcamera/pipeline/simple/converter.h | 5 +-\n src/libcamera/pipeline/simple/simple.cpp | 3 +-\n 3 files changed, 57 insertions(+), 9 deletions(-)","diff":"diff --git a/src/libcamera/pipeline/simple/converter.cpp b/src/libcamera/pipeline/simple/converter.cpp\nindex 7a9d67b37624..e5e2f0fddb62 100644\n--- a/src/libcamera/pipeline/simple/converter.cpp\n+++ b/src/libcamera/pipeline/simple/converter.cpp\n@@ -8,6 +8,7 @@\n #include \"converter.h\"\n \n #include \n+#include \n \n #include \n #include \n@@ -93,7 +94,52 @@ std::vector SimpleConverter::formats(PixelFormat input)\n \treturn pixelFormats;\n }\n \n-int SimpleConverter::configure(PixelFormat inputFormat,\n+SizeRange SimpleConverter::sizes(const Size &input)\n+{\n+\tif (!m2m_)\n+\t\treturn {};\n+\n+\t/*\n+\t * Set the size on the input side (V4L2 output) of the converter to\n+\t * enumerate the scaling capabilities on its output (V4L2 capture).\n+\t */\n+\tV4L2DeviceFormat format;\n+\tformat.fourcc = V4L2PixelFormat();\n+\tformat.size = input;\n+\n+\tint ret = m2m_->output()->setFormat(&format);\n+\tif (ret < 0) {\n+\t\tLOG(SimplePipeline, Error)\n+\t\t\t<< \"Failed to set format: \" << strerror(-ret);\n+\t\treturn {};\n+\t}\n+\n+\tSizeRange sizes;\n+\n+\tformat.size = { 1, 1 };\n+\tret = m2m_->capture()->setFormat(&format);\n+\tif (ret < 0) {\n+\t\tLOG(SimplePipeline, Error)\n+\t\t\t<< \"Failed to set format: \" << strerror(-ret);\n+\t\treturn {};\n+\t}\n+\n+\tsizes.min = format.size;\n+\n+\tformat.size = { UINT_MAX, UINT_MAX };\n+\tret = m2m_->capture()->setFormat(&format);\n+\tif (ret < 0) {\n+\t\tLOG(SimplePipeline, Error)\n+\t\t\t<< \"Failed to set format: \" << strerror(-ret);\n+\t\treturn {};\n+\t}\n+\n+\tsizes.max = format.size;\n+\n+\treturn sizes;\n+}\n+\n+int SimpleConverter::configure(PixelFormat inputFormat, const Size &inputSize,\n \t\t\t StreamConfiguration *cfg)\n {\n \tV4L2DeviceFormat format;\n@@ -101,7 +147,7 @@ int SimpleConverter::configure(PixelFormat inputFormat,\n \n \tV4L2PixelFormat videoFormat = m2m_->output()->toV4L2PixelFormat(inputFormat);\n \tformat.fourcc = videoFormat;\n-\tformat.size = cfg->size;\n+\tformat.size = inputSize;\n \n \tret = m2m_->output()->setFormat(&format);\n \tif (ret < 0) {\n@@ -110,18 +156,16 @@ int SimpleConverter::configure(PixelFormat inputFormat,\n \t\treturn ret;\n \t}\n \n-\tif (format.fourcc != videoFormat || format.size != cfg->size) {\n+\tif (format.fourcc != videoFormat || format.size != inputSize) {\n \t\tLOG(SimplePipeline, Error)\n \t\t\t<< \"Input format not supported\";\n \t\treturn -EINVAL;\n \t}\n \n-\t/*\n-\t * Set the pixel format on the output, the size is identical to the\n-\t * input as we don't support scaling.\n-\t */\n+\t/* Set the pixel format and size on the output. */\n \tvideoFormat = m2m_->capture()->toV4L2PixelFormat(cfg->pixelFormat);\n \tformat.fourcc = videoFormat;\n+\tformat.size = cfg->size;\n \n \tret = m2m_->capture()->setFormat(&format);\n \tif (ret < 0) {\ndiff --git a/src/libcamera/pipeline/simple/converter.h b/src/libcamera/pipeline/simple/converter.h\nindex 0beb96a55d5b..1f770eb844b5 100644\n--- a/src/libcamera/pipeline/simple/converter.h\n+++ b/src/libcamera/pipeline/simple/converter.h\n@@ -20,6 +20,7 @@ namespace libcamera {\n class FrameBuffer;\n class MediaDevice;\n struct Size;\n+class SizeRange;\n struct StreamConfiguration;\n class V4L2M2MDevice;\n \n@@ -33,8 +34,10 @@ public:\n \tvoid close();\n \n \tstd::vector formats(PixelFormat input);\n+\tSizeRange sizes(const Size &input);\n \n-\tint configure(PixelFormat inputFormat, StreamConfiguration *cfg);\n+\tint configure(PixelFormat inputFormat, const Size &inputSize,\n+\t\t StreamConfiguration *cfg);\n \tint exportBuffers(unsigned int count,\n \t\t\t std::vector> *buffers);\n \ndiff --git a/src/libcamera/pipeline/simple/simple.cpp b/src/libcamera/pipeline/simple/simple.cpp\nindex 68595bc29726..686639c3b0c9 100644\n--- a/src/libcamera/pipeline/simple/simple.cpp\n+++ b/src/libcamera/pipeline/simple/simple.cpp\n@@ -555,7 +555,8 @@ int SimplePipelineHandler::configure(Camera *camera, CameraConfiguration *c)\n \tuseConverter_ = config->needConversion();\n \n \tif (useConverter_) {\n-\t\tint ret = converter_->configure(pipeConfig.pixelFormat, &cfg);\n+\t\tint ret = converter_->configure(pipeConfig.pixelFormat,\n+\t\t\t\t\t\tcfg.size, &cfg);\n \t\tif (ret < 0) {\n \t\t\tLOG(SimplePipeline, Error)\n \t\t\t\t<< \"Unable to configure converter\";\n","prefixes":["libcamera-devel","v2","2/3"]}