From 705b1421345692312752311774de6b780a96d9e9 Mon Sep 17 00:00:00 2001
From: "Zhao, Gang" <gang.zhao.42@gmail.com>
Date: Tue, 28 Jan 2025 23:08:01 +0800
Subject: [PATCH] fdsrc: Add property is-live

Fixed #4184

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8372>
---
 .../docs/plugins/gst_plugins_cache.json       | 12 ++++++++++++
 .../gstreamer/plugins/elements/gstfdsrc.c     | 19 +++++++++++++++++++
 2 files changed, 31 insertions(+)

diff --git a/subprojects/gstreamer/docs/plugins/gst_plugins_cache.json b/subprojects/gstreamer/docs/plugins/gst_plugins_cache.json
index e6fc6ded11..17858a7add 100644
--- a/subprojects/gstreamer/docs/plugins/gst_plugins_cache.json
+++ b/subprojects/gstreamer/docs/plugins/gst_plugins_cache.json
@@ -839,6 +839,18 @@
                         "type": "gint",
                         "writable": true
                     },
+                    "is-live": {
+                        "blurb": "Act like a live source",
+                        "conditionally-available": false,
+                        "construct": false,
+                        "construct-only": false,
+                        "controllable": false,
+                        "default": "false",
+                        "mutable": "null",
+                        "readable": true,
+                        "type": "gboolean",
+                        "writable": true
+                    },
                     "timeout": {
                         "blurb": "Post a message after timeout microseconds (0 = disabled)",
                         "conditionally-available": false,
diff --git a/subprojects/gstreamer/plugins/elements/gstfdsrc.c b/subprojects/gstreamer/plugins/elements/gstfdsrc.c
index 89ccd5a145..c2c59f5e4b 100644
--- a/subprojects/gstreamer/plugins/elements/gstfdsrc.c
+++ b/subprojects/gstreamer/plugins/elements/gstfdsrc.c
@@ -109,6 +109,7 @@ enum
 
   PROP_FD,
   PROP_TIMEOUT,
+  PROP_IS_LIVE,
 
   PROP_LAST
 };
@@ -172,6 +173,17 @@ gst_fd_src_class_init (GstFdSrcClass * klass)
           G_MAXUINT64, DEFAULT_TIMEOUT,
           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+  /**
+   * GstFdSrc:is-live
+   *
+   * Act like a live source if set to %TRUE.
+   *
+   * Since: 1.26
+   */
+  g_object_class_install_property (gobject_class, PROP_IS_LIVE,
+      g_param_spec_boolean ("is-live", "is-live", "Act like a live source",
+          FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   gst_element_class_set_static_metadata (gstelement_class,
       "Filedescriptor Source",
       "Source/File",
@@ -362,6 +374,10 @@ gst_fd_src_set_property (GObject * object, guint prop_id, const GValue * value,
       GST_DEBUG_OBJECT (src, "poll timeout set to %" GST_TIME_FORMAT,
           GST_TIME_ARGS (src->timeout));
       break;
+    case PROP_IS_LIVE:
+      GST_DEBUG_OBJECT (src, "live set to %d", g_value_get_boolean (value));
+      gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value));
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -381,6 +397,9 @@ gst_fd_src_get_property (GObject * object, guint prop_id, GValue * value,
     case PROP_TIMEOUT:
       g_value_set_uint64 (value, src->timeout);
       break;
+    case PROP_IS_LIVE:
+      g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src)));
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;