Show a patch.

GET /api/patches/2120/?format=api
HTTP 200 OK
Allow: GET, PUT, PATCH, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "id": 2120,
    "url": "https://patchwork.libcamera.org/api/patches/2120/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/2120/",
    "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": "<20191006200852.11775-5-jacopo@jmondi.org>",
    "date": "2019-10-06T20:08:51",
    "name": "[libcamera-devel,v3,4/5] ipa: vimc: Add support for tracing operations",
    "commit_ref": null,
    "pull_url": null,
    "state": "superseded",
    "archived": false,
    "hash": "c4e554b6d1130efbd00a372114f7a310680a7b33",
    "submitter": {
        "id": 3,
        "url": "https://patchwork.libcamera.org/api/people/3/?format=api",
        "name": "Jacopo Mondi",
        "email": "jacopo@jmondi.org"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/2120/mbox/",
    "series": [
        {
            "id": 524,
            "url": "https://patchwork.libcamera.org/api/series/524/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=524",
            "date": "2019-10-06T20:08:47",
            "name": "test: Add IPA interface test support",
            "version": 3,
            "mbox": "https://patchwork.libcamera.org/series/524/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/2120/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/2120/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<jacopo@jmondi.org>",
        "Received": [
            "from relay6-d.mail.gandi.net (relay6-d.mail.gandi.net\n\t[217.70.183.198])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 2094360E1E\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tSun,  6 Oct 2019 22:07:14 +0200 (CEST)",
            "from uno.lan (2-224-242-101.ip172.fastwebnet.it [2.224.242.101])\n\t(Authenticated sender: jacopo@jmondi.org)\n\tby relay6-d.mail.gandi.net (Postfix) with ESMTPSA id DDA1EC0003\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tSun,  6 Oct 2019 20:07:13 +0000 (UTC)"
        ],
        "X-Originating-IP": "2.224.242.101",
        "From": "Jacopo Mondi <jacopo@jmondi.org>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Sun,  6 Oct 2019 22:08:51 +0200",
        "Message-Id": "<20191006200852.11775-5-jacopo@jmondi.org>",
        "X-Mailer": "git-send-email 2.23.0",
        "In-Reply-To": "<20191006200852.11775-1-jacopo@jmondi.org>",
        "References": "<20191006200852.11775-1-jacopo@jmondi.org>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[libcamera-devel] [PATCH v3 4/5] ipa: vimc: Add support for tracing\n\toperations",
        "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>",
        "X-List-Received-Date": "Sun, 06 Oct 2019 20:07:14 -0000"
    },
    "content": "Add support to the dummy VIMC IPA for tracing operation by using a FIFO\nchannel that will be used by the IPA Interface test to verify\ncommunications with the IPA.\n\nAt the moment only add support for the init() operation as it's the only\ndefined one.\n\nSigned-off-by: Jacopo Mondi <jacopo@jmondi.org>\n---\n include/ipa/ipa_vimc.h | 21 +++++++++++++\n src/ipa/ipa_vimc.cpp   | 68 +++++++++++++++++++++++++++++++++++++++++-\n 2 files changed, 88 insertions(+), 1 deletion(-)\n create mode 100644 include/ipa/ipa_vimc.h",
    "diff": "diff --git a/include/ipa/ipa_vimc.h b/include/ipa/ipa_vimc.h\nnew file mode 100644\nindex 000000000000..f4a3ef4f32a4\n--- /dev/null\n+++ b/include/ipa/ipa_vimc.h\n@@ -0,0 +1,21 @@\n+/* SPDX-License-Identifier: LGPL-2.1-or-later */\n+/*\n+ * Copyright (C) 2019, Google Inc.\n+ *\n+ * ipa_vimc.h - Vimc Image Processing Algorithm module\n+ */\n+\n+#ifndef __LIBCAMERA_IPA_VIMC_H__\n+#define __LIBCAMERA_IPA_VIMC_H__\n+\n+namespace libcamera {\n+\n+static const char *vimcFifoPath = \"/tmp/vimc_ipa_fifo\";\n+enum IPAOperationCode {\n+\tIPAOperationNone,\n+\tIPAOperationInit,\n+};\n+\n+}; /* namespace libcamera */\n+\n+#endif /* __LIBCAMERA_IPA_VIMC_H__ */\ndiff --git a/src/ipa/ipa_vimc.cpp b/src/ipa/ipa_vimc.cpp\nindex abc06e7f5fd5..0bc0b73c2d3f 100644\n--- a/src/ipa/ipa_vimc.cpp\n+++ b/src/ipa/ipa_vimc.cpp\n@@ -5,25 +5,91 @@\n  * ipa_vimc.cpp - Vimc Image Processing Algorithm module\n  */\n \n+#include <ipa/ipa_vimc.h>\n+\n+#include <fcntl.h>\n+#include <string.h>\n+#include <sys/stat.h>\n+#include <unistd.h>\n+\n #include <iostream>\n \n #include <ipa/ipa_interface.h>\n #include <ipa/ipa_module_info.h>\n \n+#include \"log.h\"\n+\n namespace libcamera {\n \n+LOG_DEFINE_CATEGORY(IPAVimc)\n+\n class IPAVimc : public IPAInterface\n {\n public:\n+\tIPAVimc();\n+\t~IPAVimc();\n+\n \tint init();\n+\n+private:\n+\tvoid initTrace();\n+\tvoid trace(enum IPAOperationCode operation);\n+\n+\tint fd_;\n };\n \n+IPAVimc::IPAVimc()\n+\t: fd_(-1)\n+{\n+\tinitTrace();\n+}\n+\n+IPAVimc::~IPAVimc()\n+{\n+\tif (fd_)\n+\t\t::close(fd_);\n+}\n+\n int IPAVimc::init()\n {\n-\tstd::cout << \"initializing vimc IPA!\" << std::endl;\n+\ttrace(IPAOperationInit);\n+\n+\tLOG(IPAVimc, Debug) << \"initializing vimc IPA!\";\n+\n \treturn 0;\n }\n \n+void IPAVimc::initTrace()\n+{\n+\tstruct stat fifoStat;\n+\tint ret = stat(vimcFifoPath, &fifoStat);\n+\tif (ret)\n+\t\treturn;\n+\n+\tret = ::open(vimcFifoPath, O_WRONLY);\n+\tif (ret < 0) {\n+\t\tret = -errno;\n+\t\tLOG(IPAVimc, Error) << \"Failed to open vimc IPA test FIFO: \"\n+\t\t\t\t    << strerror(-ret);\n+\t\treturn;\n+\t}\n+\n+\tfd_ = ret;\n+}\n+\n+void IPAVimc::trace(enum IPAOperationCode operation)\n+{\n+\tif (fd_ < 0)\n+\t\treturn;\n+\n+\tint ret = ::write(fd_, &operation, sizeof(operation));\n+\tif (ret < 0) {\n+\t\tret = -errno;\n+\t\tLOG(IPAVimc, Error) << \"Failed to write to vimc IPA test FIFO: \"\n+\t\t\t\t    << strerror(-ret);\n+\t}\n+}\n+\n /*\n  * External IPA module interface\n  */\n",
    "prefixes": [
        "libcamera-devel",
        "v3",
        "4/5"
    ]
}