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{
    "id": 2895,
    "url": "https://patchwork.libcamera.org/api/patches/2895/?format=api",
    "web_url": "https://patchwork.libcamera.org/patch/2895/",
    "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": "<20200227200407.490616-14-nicolas.dufresne@collabora.com>",
    "date": "2020-02-27T20:03:53",
    "name": "[libcamera-devel,v2,13/27] gst: libcamerasrc: Send stream start event",
    "commit_ref": null,
    "pull_url": null,
    "state": "accepted",
    "archived": false,
    "hash": "2868eb02283a616be21ae50207b28aad62ba4bd9",
    "submitter": {
        "id": 31,
        "url": "https://patchwork.libcamera.org/api/people/31/?format=api",
        "name": "Nicolas Dufresne",
        "email": "nicolas.dufresne@collabora.com"
    },
    "delegate": null,
    "mbox": "https://patchwork.libcamera.org/patch/2895/mbox/",
    "series": [
        {
            "id": 693,
            "url": "https://patchwork.libcamera.org/api/series/693/?format=api",
            "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=693",
            "date": "2020-02-27T20:03:40",
            "name": "GStreamer Element for libcamera",
            "version": 2,
            "mbox": "https://patchwork.libcamera.org/series/693/mbox/"
        }
    ],
    "comments": "https://patchwork.libcamera.org/api/patches/2895/comments/",
    "check": "pending",
    "checks": "https://patchwork.libcamera.org/api/patches/2895/checks/",
    "tags": {},
    "headers": {
        "Return-Path": "<nicolas.dufresne@collabora.com>",
        "Received": [
            "from bhuna.collabora.co.uk (bhuna.collabora.co.uk\n\t[IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 1FAD7626F6\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tThu, 27 Feb 2020 21:04:24 +0100 (CET)",
            "from [127.0.0.1] (localhost [127.0.0.1])\n\t(Authenticated sender: nicolas) with ESMTPSA id 8A9AB29654B"
        ],
        "From": "Nicolas Dufresne <nicolas.dufresne@collabora.com>",
        "To": "libcamera-devel@lists.libcamera.org",
        "Date": "Thu, 27 Feb 2020 15:03:53 -0500",
        "Message-Id": "<20200227200407.490616-14-nicolas.dufresne@collabora.com>",
        "X-Mailer": "git-send-email 2.24.1",
        "In-Reply-To": "<20200227200407.490616-1-nicolas.dufresne@collabora.com>",
        "References": "<20200227200407.490616-1-nicolas.dufresne@collabora.com>",
        "MIME-Version": "1.0",
        "Content-Transfer-Encoding": "8bit",
        "Subject": "[libcamera-devel] [PATCH v2 13/27] gst: libcamerasrc: Send stream\n\tstart event",
        "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": "Thu, 27 Feb 2020 20:04:24 -0000"
    },
    "content": "Prior to sending caps, we need to send a stream-start event. This requires\ngenerating a stream and a group id. The stream id is random for live sources and\nthe group id is shared across all pads.\n\nSigned-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>\nReviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>\n---\n src/gstreamer/gstlibcamerasrc.cpp | 11 +++++++++++\n 1 file changed, 11 insertions(+)",
    "diff": "diff --git a/src/gstreamer/gstlibcamerasrc.cpp b/src/gstreamer/gstlibcamerasrc.cpp\nindex 5a86a6d..e2c63d1 100644\n--- a/src/gstreamer/gstlibcamerasrc.cpp\n+++ b/src/gstreamer/gstlibcamerasrc.cpp\n@@ -129,8 +129,19 @@ static void\n gst_libcamera_src_task_enter(GstTask *task, GThread *thread, gpointer user_data)\n {\n \tGstLibcameraSrc *self = GST_LIBCAMERA_SRC(user_data);\n+\tGLibRecLocker(&self->stream_lock);\n+\tGstLibcameraSrcState *state = self->state;\n \n \tGST_DEBUG_OBJECT(self, \"Streaming thread has started\");\n+\n+\tguint group_id = gst_util_group_id_next();\n+\tfor (GstPad *srcpad : state->srcpads) {\n+\t\t/* Create stream-id and push stream-start */\n+\t\tg_autofree gchar *stream_id = gst_pad_create_stream_id(srcpad, GST_ELEMENT(self), nullptr);\n+\t\tGstEvent *event = gst_event_new_stream_start(stream_id);\n+\t\tgst_event_set_group_id(event, group_id);\n+\t\tgst_pad_push_event(srcpad, event);\n+\t}\n }\n \n static void\n",
    "prefixes": [
        "libcamera-devel",
        "v2",
        "13/27"
    ]
}