{"id":12632,"url":"https://patchwork.libcamera.org/api/patches/12632/?format=json","web_url":"https://patchwork.libcamera.org/patch/12632/","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":"<20210617123941.1095481-4-andrey.konovalov@linaro.org>","date":"2021-06-17T12:39:41","name":"[libcamera-devel,v4,3/3] qcam: viewfinder_gl: Add support for RAW12 packed formats","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"47d655b8c7d458ac72e754d052130527fe27a798","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/12632/mbox/","series":[{"id":2150,"url":"https://patchwork.libcamera.org/api/series/2150/?format=json","web_url":"https://patchwork.libcamera.org/project/libcamera/list/?series=2150","date":"2021-06-17T12:39:38","name":"qcam: viewfinder_gl: add RAW10P and RAW12P formats","version":4,"mbox":"https://patchwork.libcamera.org/series/2150/mbox/"}],"comments":"https://patchwork.libcamera.org/api/patches/12632/comments/","check":"pending","checks":"https://patchwork.libcamera.org/api/patches/12632/checks/","tags":{},"headers":{"Return-Path":"<libcamera-devel-bounces@lists.libcamera.org>","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 2E66AC3218\n\tfor 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<andrey.konovalov@linaro.org>","To":"libcamera-devel@lists.libcamera.org,\n\tlaurent.pinchart@ideasonboard.com","Date":"Thu, 17 Jun 2021 15:39:41 +0300","Message-Id":"<20210617123941.1095481-4-andrey.konovalov@linaro.org>","X-Mailer":"git-send-email 2.25.1","In-Reply-To":"<20210617123941.1095481-1-andrey.konovalov@linaro.org>","References":"<20210617123941.1095481-1-andrey.konovalov@linaro.org>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Subject":"[libcamera-devel] [PATCH v4 3/3] 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":"<libcamera-devel.lists.libcamera.org>","List-Unsubscribe":"<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>","List-Archive":"<https://lists.libcamera.org/pipermail/libcamera-devel/>","List-Post":"<mailto:libcamera-devel@lists.libcamera.org>","List-Help":"<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>","List-Subscribe":"<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>","Cc":"morgan@casual-effects.com","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"},"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 <andrey.konovalov@linaro.org>\nReviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\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 1df83849..b2aa329e 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\t\t1.25\n+#define THRESHOLD_L\t0.14\n+#define THRESHOLD_H\t0.64\n+#elif defined(RAW12P)\n+#define BPP\t\t1.5\n+#define THRESHOLD_L\t0.27\n+#define THRESHOLD_H\t0.27\n+#else\n+#error Invalid raw format\n+#endif\n+\n+\n varying vec2 textureOut;\n \n /* the texture size in pixels */\n@@ -66,10 +100,7 @@ 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_bytes.x = BPP_X * center_pixel.x + 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_bytes.x = BPP * center_pixel.x + 0.02;\n \n \tfloat fract_x = fract(center_bytes.x);\n \n@@ -90,14 +121,14 @@ void main(void)\n \t * 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 \n \t/*\n \t * If xcoords[1] points at the byte containing the LS bits\n \t * 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_pixel.xy + 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 ffbbc6c5..a6aa2b44 100644\n--- a/src/qcam/viewfinder_gl.cpp\n+++ b/src/qcam/viewfinder_gl.cpp\n@@ -41,6 +41,11 @@ static const QList<libcamera::PixelFormat> 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","v4","3/3"]}