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{
    "id": 10608,
    "url": "https://patchwork.libcamera.org/api/patches/10608/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/10608/",
    "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": "<20201208034234.2501401-3-hiroh@chromium.org>",
    "date": "2020-12-08T03:42:33",
    "name": "[libcamera-devel,v4,3/3] android: camera_device: Reorder configurations before requesting",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "20a254c583723982a5a5aa53944c8c742fb0179d",
    "submitter": {
        "id": 63,
        "url": "https://patchwork.libcamera.org/api/people/63/?format=api",
        "name": "Hirokazu Honda",
        "email": "hiroh@chromium.org"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/10608/mbox/",
    "series": [
        {
            "id": 1513,
            "url": "https://patchwork.libcamera.org/api/series/1513/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=1513",
            "date": "2020-12-08T03:42:31",
            "name": "[libcamera-devel,v4,1/3] android: camera_device: Introduce Camera3StreamConfig",
            "version": 4,
            "mbox": "https://patchwork.libcamera.org/series/1513/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/10608/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/10608/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>",
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        "From": "Hirokazu Honda <hiroh@chromium.org>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Tue,  8 Dec 2020 03:42:33 +0000",
        "Message-Id": "<20201208034234.2501401-3-hiroh@chromium.org>",
        "X-Mailer": "git-send-email 2.29.2.576.ga3fc446d84-goog",
        "In-Reply-To": "<20201208034234.2501401-1-hiroh@chromium.org>",
        "References": "<20201208034234.2501401-1-hiroh@chromium.org>",
        "MIME-Version": "1.0",
        "Subject": "[libcamera-devel] [PATCH v4 3/3] android: camera_device: Reorder\n\tconfigurations before requesting",
        "X-BeenThere": "libcamera-devel@lists.libcamera.org",
        "X-Mailman-Version": "2.1.29",
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        "Errors-To": "libcamera-devel-bounces@lists.libcamera.org",
        "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>"
    },
    "content": "This reorders Camera3Configs before executing\nCameraConfiguration::validate() to make it easier for the Camera\nto satisfy the Android framework request.\n\nSigned-off-by: Hirokazu Honda <hiroh@chromium.org>\n---\n src/android/camera_device.cpp | 108 +++++++++++++++++++++++++++++++++-\n 1 file changed, 106 insertions(+), 2 deletions(-)\n\n--\n2.29.2.576.ga3fc446d84-goog",
    "diff": "diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp\nindex b7bf3d88..36d0b343 100644\n--- a/src/android/camera_device.cpp\n+++ b/src/android/camera_device.cpp\n@@ -9,6 +9,7 @@\n #include \"camera_ops.h\"\n #include \"post_processor.h\"\n\n+#include <optional>\n #include <sys/mman.h>\n #include <tuple>\n #include <vector>\n@@ -27,6 +28,8 @@\n\n using namespace libcamera;\n\n+LOG_DECLARE_CATEGORY(HAL)\n+\n namespace {\n\n /*\n@@ -140,9 +143,108 @@ struct Camera3StreamConfig {\n \tstd::vector<CameraStream::Type> types;\n \tStreamConfiguration config;\n };\n-} /* namespace */\n\n-LOG_DECLARE_CATEGORY(HAL)\n+/*\n+ * Reorder the configurations so that libcamera::Camera can accept them as much\n+ * as possible. The sort rule is as follows.\n+ * 1.) The configuration for NV12 request whose resolution is the largest.\n+ * 2.) The configuration for JPEG request.\n+ * 3.) Others. Larger resolutions and different formats are put earlier.\n+ */\n+std::vector<Camera3StreamConfig> sortCamera3StreamConfigs(\n+\tstd::vector<Camera3StreamConfig> unsortedConfigs,\n+\tconst camera3_stream_t *jpegStream) {\n+\tconst size_t unsortedSize = unsortedConfigs.size();\n+\tstd::optional<Camera3StreamConfig> jpegConfig = std::nullopt;\n+\n+\tif (jpegStream) {\n+\t\tfor (size_t i = 0; i < unsortedSize; ++i) {\n+\t\t\tconst auto &streams = unsortedConfigs[i].streams;\n+\t\t\tif (std::find(streams.begin(), streams.end(),\n+\t\t\t\t      jpegStream) != streams.end()) {\n+\t\t\t\tjpegConfig = std::move(unsortedConfigs[i]);\n+\t\t\t\tunsortedConfigs.erase(unsortedConfigs.begin() + i);\n+\t\t\t\tbreak;\n+\t\t\t}\n+\t\t}\n+\t\tif (!jpegConfig)\n+\t\t\tLOG(HAL, Fatal) << \"No Camera3StreamConfig is found for Jpeg\";\n+\t}\n+\n+\tstd::map<uint32_t, std::vector<Camera3StreamConfig>> formatToConfigs;\n+\tfor (const auto &streamConfig : unsortedConfigs) {\n+\t\tconst StreamConfiguration &config = streamConfig.config;\n+\t\tformatToConfigs[config.pixelFormat].push_back(streamConfig);\n+\n+\t}\n+\tfor (auto &[format, streamConfigs] : formatToConfigs) {\n+\t\t/* Sorted by resolution. Smaller is put first. */\n+\t\tstd::sort(streamConfigs.begin(), streamConfigs.end(),\n+\t\t\t  [](const auto &streamConfigA, const auto &streamConfigB) {\n+\t\t\t\tconst Size &sizeA = streamConfigA.config.size;\n+\t\t\t\tconst Size &sizeB = streamConfigB.config.size;\n+\t\t\t\treturn sizeA < sizeB;\n+\t\t\t  });\n+\t}\n+\n+\tstd::vector<Camera3StreamConfig> sortedConfigs;\n+\tsortedConfigs.reserve(unsortedSize);\n+\t/*\n+\t * NV12 is the most prioritized format. Put the configuration with NV12\n+\t * and the largest resolution first.\n+\t */\n+\tconst auto nv12It = formatToConfigs.find(formats::NV12);\n+\tif (nv12It != formatToConfigs.end()) {\n+\t\tauto &nv12Configs = nv12It->second;\n+\t\tconst Size &nv12LargestSize = nv12Configs.back().config.size;\n+\t\t/*\n+\t\t * If JPEG will be created from NV12 and the size is larger than\n+\t\t * the largest NV12 configurations, then put the NV12\n+\t\t * configuration for JPEG first.\n+\t\t */\n+\t\tif (jpegConfig && jpegConfig->config.pixelFormat == formats::NV12) {\n+\t\t\tconst Size &nv12SizeForJpeg = jpegConfig->config.size;\n+\n+\t\t\tif (nv12LargestSize < nv12SizeForJpeg) {\n+\t\t\t\tLOG(HAL, Debug) << \"Insert \" << jpegConfig->config.toString();\n+\t\t\t\tsortedConfigs.push_back(std::move(*jpegConfig));\n+\t\t\t\tjpegConfig = std::nullopt;\n+\t\t\t}\n+\t\t}\n+\t\tLOG(HAL, Debug) << \"Insert \" << nv12Configs.back().config.toString();\n+\t\tsortedConfigs.push_back(std::move(nv12Configs.back()));\n+\t\tnv12Configs.pop_back();\n+\t}\n+\n+\t/* If the configuration for JPEG is there, then put it. */\n+\tif (jpegConfig) {\n+\t\tLOG(HAL, Debug) << \"Insert \" << jpegConfig->config.toString();\n+\t\tsortedConfigs.push_back(std::move(*jpegConfig));\n+\t\tjpegConfig = std::nullopt;\n+\t}\n+\n+\t/*\n+\t * Put configurations with different formats and larger resolutions\n+\t * earlier.\n+\t */\n+\twhile (!formatToConfigs.empty()) {\n+\t\tfor (auto it = formatToConfigs.begin(); it != formatToConfigs.end();) {\n+\t\t\tauto& configs = it->second;\n+\t\t\tif (configs.empty()) {\n+\t\t\t\tit = formatToConfigs.erase(it);\n+\t\t\t\tcontinue;\n+\t\t\t}\n+\t\t\tLOG(HAL, Debug) << \"Insert \" << configs.back().config.toString();\n+\t\t\tsortedConfigs.push_back(std::move(configs.back()));\n+\t\t\tconfigs.pop_back();\n+\t\t\tit++;\n+\t\t}\n+\t}\n+\tassert(sortedConfigs.size() == unsortedSize);\n+\n+\treturn sortedConfigs;\n+}\n+} /* namespace */\n\n MappedCamera3Buffer::MappedCamera3Buffer(const buffer_handle_t camera3buffer,\n \t\t\t\t\t int flags)\n@@ -1333,6 +1435,8 @@ int CameraDevice::configureStreams(camera3_stream_configuration_t *stream_list)\n \t\tstreamConfigs[index].types.push_back(type);\n \t}\n\n+\tstreamConfigs = sortCamera3StreamConfigs(std::move(streamConfigs),\n+\t\t\t\t\t\t  jpegStream);\n \tfor (const auto &streamConfig : streamConfigs) {\n \t\tconfig_->addConfiguration(streamConfig.config);\n \t\tfor (size_t i = 0; i < streamConfig.streams.size(); ++i) {\n",
    "prefixes": [
        "libcamera-devel",
        "v4",
        "3/3"
    ]
}