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{ "id": 21196, "url": "https://patchwork.libcamera.org/api/patches/21196/?format=api", "web_url": "https://patchwork.libcamera.org/patch/21196/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20240907143110.2210711-5-chenghaoyang@google.com>", "date": "2024-09-07T14:28:29", "name": "[v11,4/7] libcamera: pipeline: Add test pattern for VirtualPipelineHandler", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "333af82a7f59852718f6621e275050416dfff390", "submitter": { "id": 117, "url": "https://patchwork.libcamera.org/api/people/117/?format=api", "name": "Cheng-Hao Yang", "email": "chenghaoyang@chromium.org" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/21196/mbox/", "series": [ { "id": 4567, "url": "https://patchwork.libcamera.org/api/series/4567/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=4567", "date": "2024-09-07T14:28:25", "name": "Add VirtualPipelineHandler", "version": 11, "mbox": "https://patchwork.libcamera.org/series/4567/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/21196/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/21196/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 70E12C324C\n\tfor <parsemail@patchwork.libcamera.org>;\n\tSat, 7 Sep 2024 14:31:33 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 1B59B63500;\n\tSat, 7 Sep 2024 16:31:33 +0200 (CEST)", "from mail-pl1-x62f.google.com (mail-pl1-x62f.google.com\n\t[IPv6:2607:f8b0:4864:20::62f])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 6B5A8634F4\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tSat, 7 Sep 2024 16:31:24 +0200 (CEST)", "by mail-pl1-x62f.google.com with SMTP id\n\td9443c01a7336-2054e22ce3fso27814185ad.2\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tSat, 07 Sep 2024 07:31:24 -0700 (PDT)", "from chenghaoyang-low.c.googlers.com.com\n\t(0.223.81.34.bc.googleusercontent.com. [34.81.223.0])\n\tby smtp.gmail.com with ESMTPSA id\n\td9443c01a7336-20710e33974sm9208935ad.104.2024.09.07.07.31.20\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tSat, 07 Sep 2024 07:31:22 -0700 (PDT)" ], "Authentication-Results": "lancelot.ideasonboard.com; dkim=pass (1024-bit key;\n\tunprotected) header.d=chromium.org header.i=@chromium.org\n\theader.b=\"VwRUkRzc\"; dkim-atps=neutral", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=chromium.org; s=google; t=1725719482; x=1726324282;\n\tdarn=lists.libcamera.org; \n\th=content-transfer-encoding:mime-version:references:in-reply-to\n\t:message-id:date:subject:cc:to:from:from:to:cc:subject:date\n\t:message-id:reply-to;\n\tbh=TPTolxD0dbXfb95Xlm2OYyFA+j4DzV1KmlyOUgwk5UA=;\n\tb=VwRUkRzcQbC/WU+1BwJ5/Uhu8ZZ7xyjfH1puqOVM14ZBHMZpdXfVyF+FkoYhe1g8at\n\tK0iAujpWRzopIkvsU3fGecRr3JIKqY0/lMtvls83xguBz/v7mWt9oNxVJZz5APiEi4hs\n\t1ZlpP8lFA3BlyddI5nKVcjIOKRIg5TeNsupas=", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; 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2002:a17:902:e88a:b0:206:8f21:284e with SMTP id\n\td9443c01a7336-206f05f68b0mr54423435ad.42.1725719482464; \n\tSat, 07 Sep 2024 07:31:22 -0700 (PDT)", "From": "Harvey Yang <chenghaoyang@chromium.org>", "X-Google-Original-From": "Harvey Yang <chenghaoyang@google.com>", "To": "libcamera-devel@lists.libcamera.org", "Cc": "Konami Shu <konamiz@google.com>, Harvey Yang <chenghaoyang@chromium.org>,\n\tYunke Cao <yunkec@chromium.org>, Tomasz Figa <tfiga@chromium.org>", "Subject": "[PATCH v11 4/7] libcamera: pipeline: Add test pattern for\n\tVirtualPipelineHandler", "Date": "Sat, 7 Sep 2024 14:28:29 +0000", "Message-ID": "<20240907143110.2210711-5-chenghaoyang@google.com>", "X-Mailer": "git-send-email 2.46.0.469.g59c65b2a67-goog", "In-Reply-To": "<20240907143110.2210711-1-chenghaoyang@google.com>", "References": "<20240907143110.2210711-1-chenghaoyang@google.com>", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "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>", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "From: Konami Shu <konamiz@google.com>\n\nAdd a test pattern generator class hierarchy for the Virtual\npipeline handler.\n\nImplement two types of test patterns: color bars and diagonal lines\ngenerator and use them in the Virtual pipeline handler.\n\nAdd a dependency for libyuv to the build system to generate images\nin NV12 format from the test pattern.\n\nSigned-off-by: Konami Shu <konamiz@google.com>\nCo-developed-by: Harvey Yang <chenghaoyang@chromium.org>\nCo-developed-by: Yunke Cao <yunkec@chromium.org>\nCo-developed-by: Tomasz Figa <tfiga@chromium.org>\n\nlibcamera: pipeline: Shift test pattern by 1 pixel left every frame\n\n- This write the buffer every frame\n- Shifting makes the frame rate dropped from about 160 to 40\n\nPatchset1->2\n- Use constant instead of using a magic number\n\nPatchset2->3\n- Make shiftLeft() private\n\nSigned-off-by: Konami Shu <konamiz@google.com>\nCo-developed-by: Harvey Yang <chenghaoyang@chromium.org>\nCo-developed-by: Yunke Cao <yunkec@chromium.org>\nCo-developed-by: Tomasz Figa <tfiga@chromium.org>\n---\n src/android/meson.build | 19 ---\n .../pipeline/virtual/frame_generator.h | 29 ++++\n src/libcamera/pipeline/virtual/meson.build | 3 +\n .../virtual/test_pattern_generator.cpp | 140 ++++++++++++++++++\n .../pipeline/virtual/test_pattern_generator.h | 57 +++++++\n src/libcamera/pipeline/virtual/virtual.cpp | 38 ++++-\n src/libcamera/pipeline/virtual/virtual.h | 7 +\n src/meson.build | 19 +++\n 8 files changed, 290 insertions(+), 22 deletions(-)\n create mode 100644 src/libcamera/pipeline/virtual/frame_generator.h\n create mode 100644 src/libcamera/pipeline/virtual/test_pattern_generator.cpp\n create mode 100644 src/libcamera/pipeline/virtual/test_pattern_generator.h", "diff": "diff --git a/src/android/meson.build b/src/android/meson.build\nindex 68646120..6341ee8b 100644\n--- a/src/android/meson.build\n+++ b/src/android/meson.build\n@@ -15,25 +15,6 @@ foreach dep : android_deps\n endif\n endforeach\n \n-libyuv_dep = dependency('libyuv', required : false)\n-\n-# Fallback to a subproject if libyuv isn't found, as it's typically not\n-# provided by distributions.\n-if not libyuv_dep.found()\n- cmake = import('cmake')\n-\n- libyuv_vars = cmake.subproject_options()\n- libyuv_vars.add_cmake_defines({'CMAKE_POSITION_INDEPENDENT_CODE': 'ON'})\n- libyuv_vars.set_override_option('cpp_std', 'c++17')\n- libyuv_vars.append_compile_args('cpp',\n- '-Wno-sign-compare',\n- '-Wno-unused-variable',\n- '-Wno-unused-parameter')\n- libyuv_vars.append_link_args('-ljpeg')\n- libyuv = cmake.subproject('libyuv', options : libyuv_vars)\n- libyuv_dep = libyuv.dependency('yuv')\n-endif\n-\n android_deps += [libyuv_dep]\n \n android_hal_sources = files([\ndiff --git a/src/libcamera/pipeline/virtual/frame_generator.h b/src/libcamera/pipeline/virtual/frame_generator.h\nnew file mode 100644\nindex 00000000..d8727b8f\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/frame_generator.h\n@@ -0,0 +1,29 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2024, Google Inc.\n+ *\n+ * frame_generator.h - Virtual cameras helper to generate frames\n+ */\n+\n+#pragma once\n+\n+#include <libcamera/framebuffer.h>\n+#include <libcamera/geometry.h>\n+\n+namespace libcamera {\n+\n+class FrameGenerator\n+{\n+public:\n+\tvirtual ~FrameGenerator() = default;\n+\n+\tvirtual void configure(const Size &size) = 0;\n+\n+\tvirtual void generateFrame(const Size &size,\n+\t\t\t\t const FrameBuffer *buffer) = 0;\n+\n+protected:\n+\tFrameGenerator() {}\n+};\n+\n+} /* namespace libcamera */\ndiff --git a/src/libcamera/pipeline/virtual/meson.build b/src/libcamera/pipeline/virtual/meson.build\nindex ada1b335..0c537777 100644\n--- a/src/libcamera/pipeline/virtual/meson.build\n+++ b/src/libcamera/pipeline/virtual/meson.build\n@@ -1,5 +1,8 @@\n # SPDX-License-Identifier: CC0-1.0\n \n libcamera_internal_sources += files([\n+ 'test_pattern_generator.cpp',\n 'virtual.cpp',\n ])\n+\n+libcamera_deps += [libyuv_dep]\ndiff --git a/src/libcamera/pipeline/virtual/test_pattern_generator.cpp b/src/libcamera/pipeline/virtual/test_pattern_generator.cpp\nnew file mode 100644\nindex 00000000..7094818e\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/test_pattern_generator.cpp\n@@ -0,0 +1,140 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2024, Google Inc.\n+ *\n+ * test_pattern_generator.cpp - Derived class of FrameGenerator for\n+ * generating test patterns\n+ */\n+\n+#include \"test_pattern_generator.h\"\n+\n+#include <libcamera/base/log.h>\n+\n+#include \"libcamera/internal/mapped_framebuffer.h\"\n+\n+#include \"libyuv/convert_from_argb.h\"\n+\n+namespace libcamera {\n+\n+LOG_DECLARE_CATEGORY(Virtual)\n+\n+static const unsigned int kARGBSize = 4;\n+\n+void TestPatternGenerator::generateFrame(const Size &size,\n+\t\t\t\t\t const FrameBuffer *buffer)\n+{\n+\tMappedFrameBuffer mappedFrameBuffer(buffer,\n+\t\t\t\t\t MappedFrameBuffer::MapFlag::Write);\n+\n+\tauto planes = mappedFrameBuffer.planes();\n+\n+\tshiftLeft(size);\n+\n+\t/* Convert the template_ to the frame buffer */\n+\tint ret = libyuv::ARGBToNV12(\n+\t\ttemplate_.get(), size.width * kARGBSize,\n+\t\tplanes[0].begin(), size.width,\n+\t\tplanes[1].begin(), size.width,\n+\t\tsize.width, size.height);\n+\tif (ret != 0)\n+\t\tLOG(Virtual, Error) << \"ARGBToNV12() failed with \" << ret;\n+}\n+\n+void TestPatternGenerator::shiftLeft(const Size &size)\n+{\n+\t/* Store the first column temporarily */\n+\tauto firstColumn = std::make_unique<uint8_t[]>(size.height * kARGBSize);\n+\tfor (size_t h = 0; h < size.height; h++) {\n+\t\tunsigned int index = h * size.width * kARGBSize;\n+\t\tunsigned int index1 = h * kARGBSize;\n+\t\tfirstColumn[index1] = template_[index];\n+\t\tfirstColumn[index1 + 1] = template_[index + 1];\n+\t\tfirstColumn[index1 + 2] = template_[index + 2];\n+\t\tfirstColumn[index1 + 3] = 0x00;\n+\t}\n+\n+\t/* Overwrite template_ */\n+\tuint8_t *buf = template_.get();\n+\tfor (size_t h = 0; h < size.height; h++) {\n+\t\tfor (size_t w = 0; w < size.width - 1; w++) {\n+\t\t\t/* Overwrite with the pixel on the right */\n+\t\t\tunsigned int index = (h * size.width + w + 1) * kARGBSize;\n+\t\t\t*buf++ = template_[index]; // B\n+\t\t\t*buf++ = template_[index + 1]; // G\n+\t\t\t*buf++ = template_[index + 2]; // R\n+\t\t\t*buf++ = 0x00; // A\n+\t\t}\n+\t\t/* Overwrite the new last column with the original first column */\n+\t\tunsigned int index1 = h * kARGBSize;\n+\t\t*buf++ = firstColumn[index1]; // B\n+\t\t*buf++ = firstColumn[index1 + 1]; // G\n+\t\t*buf++ = firstColumn[index1 + 2]; // R\n+\t\t*buf++ = 0x00; // A\n+\t}\n+}\n+\n+ColorBarsGenerator::ColorBarsGenerator() = default;\n+\n+void ColorBarsGenerator::configure(const Size &size)\n+{\n+\tconstexpr uint8_t kColorBar[8][3] = {\n+\t\t// R, G, B\n+\t\t{ 0xff, 0xff, 0xff }, // White\n+\t\t{ 0xff, 0xff, 0x00 }, // Yellow\n+\t\t{ 0x00, 0xff, 0xff }, // Cyan\n+\t\t{ 0x00, 0xff, 0x00 }, // Green\n+\t\t{ 0xff, 0x00, 0xff }, // Magenta\n+\t\t{ 0xff, 0x00, 0x00 }, // Red\n+\t\t{ 0x00, 0x00, 0xff }, // Blue\n+\t\t{ 0x00, 0x00, 0x00 }, // Black\n+\t};\n+\n+\ttemplate_ = std::make_unique<uint8_t[]>(\n+\t\tsize.width * size.height * kARGBSize);\n+\n+\tunsigned int colorBarWidth = size.width / std::size(kColorBar);\n+\n+\tuint8_t *buf = template_.get();\n+\tfor (size_t h = 0; h < size.height; h++) {\n+\t\tfor (size_t w = 0; w < size.width; w++) {\n+\t\t\t/* Repeat when the width is exceed */\n+\t\t\tunsigned int index = (w / colorBarWidth) % std::size(kColorBar);\n+\n+\t\t\t*buf++ = kColorBar[index][2]; /* B */\n+\t\t\t*buf++ = kColorBar[index][1]; /* G */\n+\t\t\t*buf++ = kColorBar[index][0]; /* R */\n+\t\t\t*buf++ = 0x00; /* A */\n+\t\t}\n+\t}\n+}\n+\n+DiagonalLinesGenerator::DiagonalLinesGenerator() = default;\n+\n+void DiagonalLinesGenerator::configure(const Size &size)\n+{\n+\tconstexpr uint8_t kColorBar[8][3] = {\n+\t\t/* R, G, B */\n+\t\t{ 0xff, 0xff, 0xff }, /* White */\n+\t\t{ 0x00, 0x00, 0x00 }, /* Black */\n+\t};\n+\n+\ttemplate_ = std::make_unique<uint8_t[]>(\n+\t\tsize.width * size.height * kARGBSize);\n+\n+\tunsigned int lineWidth = size.width / 10;\n+\n+\tuint8_t *buf = template_.get();\n+\tfor (size_t h = 0; h < size.height; h++) {\n+\t\tfor (size_t w = 0; w < size.width; w++) {\n+\t\t\t/* Repeat when the width is exceed */\n+\t\t\tint index = ((w + h) / lineWidth) % 2;\n+\n+\t\t\t*buf++ = kColorBar[index][2]; /* B */\n+\t\t\t*buf++ = kColorBar[index][1]; /* G */\n+\t\t\t*buf++ = kColorBar[index][0]; /* R */\n+\t\t\t*buf++ = 0x00; /* A */\n+\t\t}\n+\t}\n+}\n+\n+} /* namespace libcamera */\ndiff --git a/src/libcamera/pipeline/virtual/test_pattern_generator.h b/src/libcamera/pipeline/virtual/test_pattern_generator.h\nnew file mode 100644\nindex 00000000..11bcb5f0\n--- /dev/null\n+++ b/src/libcamera/pipeline/virtual/test_pattern_generator.h\n@@ -0,0 +1,57 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2024, Google Inc.\n+ *\n+ * test_pattern_generator.h - Derived class of FrameGenerator for\n+ * generating test patterns\n+ */\n+\n+#pragma once\n+\n+#include <memory>\n+\n+#include <libcamera/framebuffer.h>\n+#include <libcamera/geometry.h>\n+\n+#include \"frame_generator.h\"\n+\n+namespace libcamera {\n+\n+enum class TestPattern : char {\n+\tColorBars = 0,\n+\tDiagonalLines = 1,\n+};\n+\n+class TestPatternGenerator : public FrameGenerator\n+{\n+public:\n+\tvoid generateFrame(const Size &size, const FrameBuffer *buffer) override;\n+\n+protected:\n+\t/* Buffer of test pattern template */\n+\tstd::unique_ptr<uint8_t[]> template_;\n+\n+private:\n+\t/* Shift the buffer by 1 pixel left each frame */\n+\tvoid shiftLeft(const Size &size);\n+};\n+\n+class ColorBarsGenerator : public TestPatternGenerator\n+{\n+public:\n+\tColorBarsGenerator();\n+\n+\t/* Generate a template buffer of the color bar test pattern. */\n+\tvoid configure(const Size &size) override;\n+};\n+\n+class DiagonalLinesGenerator : public TestPatternGenerator\n+{\n+public:\n+\tDiagonalLinesGenerator();\n+\n+\t/* Generate a template buffer of the diagonal lines test pattern. */\n+\tvoid configure(const Size &size) override;\n+};\n+\n+} /* namespace libcamera */\ndiff --git a/src/libcamera/pipeline/virtual/virtual.cpp b/src/libcamera/pipeline/virtual/virtual.cpp\nindex f85ec3dd..6e64aeee 100644\n--- a/src/libcamera/pipeline/virtual/virtual.cpp\n+++ b/src/libcamera/pipeline/virtual/virtual.cpp\n@@ -173,8 +173,11 @@ int PipelineHandlerVirtual::configure(Camera *camera,\n \t\t\t\t CameraConfiguration *config)\n {\n \tVirtualCameraData *data = cameraData(camera);\n-\tfor (size_t i = 0; i < config->size(); ++i)\n+\tfor (size_t i = 0; i < config->size(); ++i) {\n \t\tconfig->at(i).setStream(&data->streamConfigs_[i].stream);\n+\t\tdata->streamConfigs_[i].frameGenerator->configure(\n+\t\t\tdata->streamConfigs_[i].stream.configuration().size);\n+\t}\n \n \treturn 0;\n }\n@@ -210,9 +213,24 @@ void PipelineHandlerVirtual::stopDevice([[maybe_unused]] Camera *camera)\n int PipelineHandlerVirtual::queueRequestDevice([[maybe_unused]] Camera *camera,\n \t\t\t\t\t Request *request)\n {\n+\tVirtualCameraData *data = cameraData(camera);\n+\n \t/* \\todo Read from the virtual video if any. */\n-\tfor (auto it : request->buffers())\n-\t\tcompleteBuffer(request, it.second);\n+\tfor (auto const &[stream, buffer] : request->buffers()) {\n+\t\tbool found = false;\n+\t\t/* map buffer and fill test patterns */\n+\t\tfor (auto &streamConfig : data->streamConfigs_) {\n+\t\t\tif (stream == &streamConfig.stream) {\n+\t\t\t\tfound = true;\n+\t\t\t\tstreamConfig.frameGenerator->generateFrame(\n+\t\t\t\t\tstream->configuration().size, buffer);\n+\t\t\t\tcompleteBuffer(request, buffer);\n+\t\t\t\tbreak;\n+\t\t\t}\n+\t\t}\n+\t\tif (!found)\n+\t\t\tLOG(Virtual, Fatal) << \"Stream not defined\";\n+\t}\n \n \trequest->metadata().set(controls::SensorTimestamp, currentTimestamp());\n \tcompleteRequest(request);\n@@ -257,11 +275,25 @@ bool PipelineHandlerVirtual::match([[maybe_unused]] DeviceEnumerator *enumerator\n \n \tconst std::string id = \"Virtual0\";\n \tstd::shared_ptr<Camera> camera = Camera::create(std::move(data), id, streams);\n+\n+\tinitFrameGenerator(camera.get());\n+\n \tregisterCamera(std::move(camera));\n \n \treturn true;\n }\n \n+void PipelineHandlerVirtual::initFrameGenerator(Camera *camera)\n+{\n+\tauto data = cameraData(camera);\n+\tfor (auto &streamConfig : data->streamConfigs_) {\n+\t\tif (data->testPattern_ == TestPattern::DiagonalLines)\n+\t\t\tstreamConfig.frameGenerator = std::make_unique<DiagonalLinesGenerator>();\n+\t\telse\n+\t\t\tstreamConfig.frameGenerator = std::make_unique<ColorBarsGenerator>();\n+\t}\n+}\n+\n REGISTER_PIPELINE_HANDLER(PipelineHandlerVirtual, \"virtual\")\n \n } /* namespace libcamera */\ndiff --git a/src/libcamera/pipeline/virtual/virtual.h b/src/libcamera/pipeline/virtual/virtual.h\nindex fb3dbcad..09d73051 100644\n--- a/src/libcamera/pipeline/virtual/virtual.h\n+++ b/src/libcamera/pipeline/virtual/virtual.h\n@@ -16,6 +16,8 @@\n #include \"libcamera/internal/dma_buf_allocator.h\"\n #include \"libcamera/internal/pipeline_handler.h\"\n \n+#include \"test_pattern_generator.h\"\n+\n namespace libcamera {\n \n class VirtualCameraData : public Camera::Private\n@@ -29,6 +31,7 @@ public:\n \t};\n \tstruct StreamConfig {\n \t\tStream stream;\n+\t\tstd::unique_ptr<FrameGenerator> frameGenerator;\n \t};\n \n \tVirtualCameraData(PipelineHandler *pipe,\n@@ -36,6 +39,8 @@ public:\n \n \t~VirtualCameraData() = default;\n \n+\tTestPattern testPattern_ = TestPattern::ColorBars;\n+\n \tconst std::vector<Resolution> supportedResolutions_;\n \tSize maxResolutionSize_;\n \tSize minResolutionSize_;\n@@ -83,6 +88,8 @@ private:\n \t\treturn static_cast<VirtualCameraData *>(camera->_d());\n \t}\n \n+\tvoid initFrameGenerator(Camera *camera);\n+\n \tDmaBufAllocator dmaBufAllocator_;\n };\n \ndiff --git a/src/meson.build b/src/meson.build\nindex 165a77bb..91bea775 100644\n--- a/src/meson.build\n+++ b/src/meson.build\n@@ -27,6 +27,25 @@ else\n ipa_sign_module = false\n endif\n \n+libyuv_dep = dependency('libyuv', required : false)\n+\n+# Fallback to a subproject if libyuv isn't found, as it's typically not\n+# provided by distributions.\n+if not libyuv_dep.found()\n+ cmake = import('cmake')\n+\n+ libyuv_vars = cmake.subproject_options()\n+ libyuv_vars.add_cmake_defines({'CMAKE_POSITION_INDEPENDENT_CODE': 'ON'})\n+ libyuv_vars.set_override_option('cpp_std', 'c++17')\n+ libyuv_vars.append_compile_args('cpp',\n+ '-Wno-sign-compare',\n+ '-Wno-unused-variable',\n+ '-Wno-unused-parameter')\n+ libyuv_vars.append_link_args('-ljpeg')\n+ libyuv = cmake.subproject('libyuv', options : libyuv_vars)\n+ libyuv_dep = libyuv.dependency('yuv')\n+endif\n+\n # libcamera must be built first as a dependency to the other components.\n subdir('libcamera')\n \n", "prefixes": [ "v11", "4/7" ] }