{"id":12575,"url":"https://patchwork.libcamera.org/api/patches/12575/?format=json","web_url":"https://patchwork.libcamera.org/patch/12575/","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":"<20210611162726.824789-4-andrey.konovalov@linaro.org>","date":"2021-06-11T16:27:25","name":"[libcamera-devel,v3,3/4] qcam: viewfinder_gl: Add support for RAW12 packed formats","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"c76de28fbc24ebe05c6414027bfff2ccd3b9bff4","submitter":{"id":25,"url":"https://patchwork.libcamera.org/api/people/25/?format=json","name":"Andrey Konovalov","email":"andrey.konovalov@linaro.org"},"delegate":null,"mbox":"https://patchwork.libcamera.org/patch/12575/mbox/","series":[{"id":2124,"url":"https://patchwork.libcamera.org/api/series/2124/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=2124","date":"2021-06-11T16:27:22","name":"qcam: viewfinder_gl: add RAW8, RAW10P and RAW12P formats","version":3,"mbox":"https://patchwork.libcamera.org/series/2124/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/12575/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/12575/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"parsemail@patchwork.libcamera.org","Delivered-To":"parsemail@patchwork.libcamera.org","Received":["from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id B2F4CC320B\n\tfor ;\n\tFri, 11 Jun 2021 16:27:50 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 746AA68933;\n\tFri, 11 Jun 2021 18:27:50 +0200 (CEST)","from mail-lf1-x133.google.com (mail-lf1-x133.google.com\n\t[IPv6:2a00:1450:4864:20::133])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id F353268935\n\tfor ;\n\tFri, 11 Jun 2021 18:27:48 +0200 (CEST)","by mail-lf1-x133.google.com with SMTP id r5so9412689lfr.5\n\tfor ;\n\tFri, 11 Jun 2021 09:27:48 -0700 (PDT)","from localhost.localdomain ([85.249.44.185])\n\tby smtp.googlemail.com with ESMTPSA id\n\tl2sm777773lji.70.2021.06.11.09.27.47\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tFri, 11 Jun 2021 09:27:47 -0700 (PDT)"],"Authentication-Results":"lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=linaro.org header.i=@linaro.org\n\theader.b=\"k1zRoXGd\"; 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\n\tFri, 11 Jun 2021 09:27:48 -0700 (PDT)","From":"Andrey Konovalov ","To":"libcamera-devel@lists.libcamera.org,\n\tlaurent.pinchart@ideasonboard.com","Date":"Fri, 11 Jun 2021 19:27:25 +0300","Message-Id":"<20210611162726.824789-4-andrey.konovalov@linaro.org>","X-Mailer":"git-send-email 2.25.1","In-Reply-To":"<20210611162726.824789-1-andrey.konovalov@linaro.org>","References":"<20210611162726.824789-1-andrey.konovalov@linaro.org>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v3 3/4] qcam: viewfinder_gl: Add support\n\tfor RAW12 packed formats","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","Cc":"morgan@casual-effects.com","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "},"content":"All the four Bayer orders are supported.\nThe 4 LS bits of the 12-bit colour values are dropped as the RGBA\nformat we convert into has only 8 bits per colour.\n\nSigned-off-by: Andrey Konovalov \n---\n src/qcam/assets/shader/bayer_1x_packed.frag | 43 +++++++++++++++---\n src/qcam/viewfinder_gl.cpp | 48 ++++++++++++++++++---\n 2 files changed, 80 insertions(+), 11 deletions(-)","diff":"diff --git a/src/qcam/assets/shader/bayer_1x_packed.frag b/src/qcam/assets/shader/bayer_1x_packed.frag\nindex 0a87c6db..d09c6fce 100644\n--- a/src/qcam/assets/shader/bayer_1x_packed.frag\n+++ b/src/qcam/assets/shader/bayer_1x_packed.frag\n@@ -23,6 +23,40 @@\n precision mediump float;\n #endif\n \n+/*\n+ * These constants are used to select the bytes containing the HS part of\n+ * the pixel value:\n+ * BPP - bytes per pixel,\n+ * THRESHOLD_L = fract(BPP) * 0.5 + 0.02\n+ * THRESHOLD_H = 1.0 - fract(BPP) * 1.5 + 0.02\n+ * Let X is the x coordinate in the texture measured in bytes (so that the\n+ * range is from 0 to (stride_-1)) aligned on the nearest pixel.\n+ * E.g. for RAW10P:\n+ * -------------+-------------------+-------------------+--\n+ * pixel No | 0 1 2 3 | 4 5 6 7 | ...\n+ * -------------+-------------------+-------------------+--\n+ * byte offset | 0 1 2 3 4 | 5 6 7 8 9 | ...\n+ * -------------+-------------------+-------------------+--\n+ * X | 0.0 1.25 2.5 3.75 | 5.0 6.25 7.5 8.75 | ...\n+ * -------------+-------------------+-------------------+--\n+ * If fract(X) < THRESHOLD_L then the previous byte contains the LS\n+ * bits of the pixel values and needs to be skipped.\n+ * If fract(X) > THRESHOLD_H then the next byte contains the LS bits\n+ * of the pixel values and needs to be skipped.\n+ */\n+#if defined(RAW10P)\n+#define BPP 1.25\n+#define THRESHOLD_L 0.14\n+#define THRESHOLD_H 0.64\n+#elif defined(RAW12P)\n+#define BPP 1.5\n+#define THRESHOLD_L 0.27\n+#define THRESHOLD_H 0.27\n+#else\n+#error Invalid raw format\n+#endif\n+\n+\n varying vec2 textureOut;\n \n /* the texture size: tex_size.xy is in bytes, tex_size.zw is in pixels */\n@@ -64,10 +98,7 @@ void main(void)\n \t * Add a small number (a few mantissa's LSBs) to avoid float\n \t * representation issues. Maybe paranoic.\n \t */\n-\tcenter.x = BPP_X * center.z + 0.02;\n-\n-\tconst float threshold_l = 0.127 /* fract(BPP_X) * 0.5 + 0.02 */;\n-\tconst float threshold_h = 0.625 /* 1.0 - fract(BPP_X) * 1.5 */;\n+\tcenter.x = BPP * center.z + 0.02;\n \n \tfloat fract_x = fract(center.x);\n \t/*\n@@ -86,13 +117,13 @@ void main(void)\n * of the previous group of the pixels, move xcoords[0] one\n \t * byte back.\n \t */\n-\txcoords[0] += (fract_x < threshold_l) ? -tex_step.x : 0.0;\n+\txcoords[0] += (fract_x < THRESHOLD_L) ? -tex_step.x : 0.0;\n \t/*\n \t * If xcoords[1] points at the byte containing the LS bits\n * of the current group of the pixels, move xcoords[1] one\n \t * byte forward.\n \t */\n-\txcoords[1] += (fract_x > threshold_h) ? tex_step.x : 0.0;\n+\txcoords[1] += (fract_x > THRESHOLD_H) ? tex_step.x : 0.0;\n \n \tvec2 alternate = mod(center.zw + tex_bayer_first_red, 2.0);\n \tbool even_col = alternate.x < 1.0;\ndiff --git a/src/qcam/viewfinder_gl.cpp b/src/qcam/viewfinder_gl.cpp\nindex 44e410c9..dcfaf973 100644\n--- a/src/qcam/viewfinder_gl.cpp\n+++ b/src/qcam/viewfinder_gl.cpp\n@@ -41,6 +41,11 @@ static const QList supportedFormats{\n \tlibcamera::formats::SGBRG10_CSI2P,\n \tlibcamera::formats::SGRBG10_CSI2P,\n \tlibcamera::formats::SRGGB10_CSI2P,\n+\t/* Raw Bayer 12-bit packed */\n+\tlibcamera::formats::SBGGR12_CSI2P,\n+\tlibcamera::formats::SGBRG12_CSI2P,\n+\tlibcamera::formats::SGRBG12_CSI2P,\n+\tlibcamera::formats::SRGGB12_CSI2P,\n };\n \n ViewFinderGL::ViewFinderGL(QWidget *parent)\n@@ -218,28 +223,56 @@ bool ViewFinderGL::selectFormat(const libcamera::PixelFormat &format)\n \tcase libcamera::formats::SBGGR10_CSI2P:\n \t\tfirstRed_.setX(1.0);\n \t\tfirstRed_.setY(1.0);\n-\t\tfragmentShaderDefines_.append(\"#define BPP_X 1.25\");\n+\t\tfragmentShaderDefines_.append(\"#define RAW10P\");\n \t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n \t\ttextureMinMagFilters_ = GL_NEAREST;\n \t\tbreak;\n \tcase libcamera::formats::SGBRG10_CSI2P:\n \t\tfirstRed_.setX(0.0);\n \t\tfirstRed_.setY(1.0);\n-\t\tfragmentShaderDefines_.append(\"#define BPP_X 1.25\");\n+\t\tfragmentShaderDefines_.append(\"#define RAW10P\");\n \t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n \t\ttextureMinMagFilters_ = GL_NEAREST;\n \t\tbreak;\n \tcase libcamera::formats::SGRBG10_CSI2P:\n \t\tfirstRed_.setX(1.0);\n \t\tfirstRed_.setY(0.0);\n-\t\tfragmentShaderDefines_.append(\"#define BPP_X 1.25\");\n+\t\tfragmentShaderDefines_.append(\"#define RAW10P\");\n \t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n \t\ttextureMinMagFilters_ = GL_NEAREST;\n \t\tbreak;\n \tcase libcamera::formats::SRGGB10_CSI2P:\n \t\tfirstRed_.setX(0.0);\n \t\tfirstRed_.setY(0.0);\n-\t\tfragmentShaderDefines_.append(\"#define BPP_X 1.25\");\n+\t\tfragmentShaderDefines_.append(\"#define RAW10P\");\n+\t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n+\t\ttextureMinMagFilters_ = GL_NEAREST;\n+\t\tbreak;\n+\tcase libcamera::formats::SBGGR12_CSI2P:\n+\t\tfirstRed_.setX(1.0);\n+\t\tfirstRed_.setY(1.0);\n+\t\tfragmentShaderDefines_.append(\"#define RAW12P\");\n+\t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n+\t\ttextureMinMagFilters_ = GL_NEAREST;\n+\t\tbreak;\n+\tcase libcamera::formats::SGBRG12_CSI2P:\n+\t\tfirstRed_.setX(0.0);\n+\t\tfirstRed_.setY(1.0);\n+\t\tfragmentShaderDefines_.append(\"#define RAW12P\");\n+\t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n+\t\ttextureMinMagFilters_ = GL_NEAREST;\n+\t\tbreak;\n+\tcase libcamera::formats::SGRBG12_CSI2P:\n+\t\tfirstRed_.setX(1.0);\n+\t\tfirstRed_.setY(0.0);\n+\t\tfragmentShaderDefines_.append(\"#define RAW12P\");\n+\t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n+\t\ttextureMinMagFilters_ = GL_NEAREST;\n+\t\tbreak;\n+\tcase libcamera::formats::SRGGB12_CSI2P:\n+\t\tfirstRed_.setX(0.0);\n+\t\tfirstRed_.setY(0.0);\n+\t\tfragmentShaderDefines_.append(\"#define RAW12P\");\n \t\tfragmentShaderFile_ = \":bayer_1x_packed.frag\";\n \t\ttextureMinMagFilters_ = GL_NEAREST;\n \t\tbreak;\n@@ -595,8 +628,13 @@ void ViewFinderGL::doRender()\n \tcase libcamera::formats::SGBRG10_CSI2P:\n \tcase libcamera::formats::SGRBG10_CSI2P:\n \tcase libcamera::formats::SRGGB10_CSI2P:\n+\tcase libcamera::formats::SBGGR12_CSI2P:\n+\tcase libcamera::formats::SGBRG12_CSI2P:\n+\tcase libcamera::formats::SGRBG12_CSI2P:\n+\tcase libcamera::formats::SRGGB12_CSI2P:\n \t\t/*\n-\t\t * Packed raw Bayer 10-bit formats are stored in GL_RED texture.\n+\t\t * Packed raw Bayer 10-bit and 12-bit formats are stored in\n+\t\t * GL_RED texture.\n \t\t * The texture width is equal to the stride.\n \t\t */\n \t\tglActiveTexture(GL_TEXTURE0);\n","prefixes":["libcamera-devel","v3","3/4"]}