From f0937071891a69b1b9c2131974a5fd2e93539965 Mon Sep 17 00:00:00 2001
From: Robert Swain <robert.swain@collabora.co.uk>
Date: Wed, 5 May 2010 10:21:55 +0200
Subject: [PATCH] queue2: Add use-ring-buffer and ring-buffer-max-size
 properties

---
 plugins/elements/gstqueue2.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 plugins/elements/gstqueue2.h |  3 +++
 2 files changed, 45 insertions(+)

diff --git a/plugins/elements/gstqueue2.c b/plugins/elements/gstqueue2.c
index 5eb5f10..eedcbff 100644
--- a/plugins/elements/gstqueue2.c
+++ b/plugins/elements/gstqueue2.c
@@ -102,6 +102,8 @@ enum
 #define DEFAULT_LOW_PERCENT        10
 #define DEFAULT_HIGH_PERCENT       99
 #define DEFAULT_TEMP_REMOVE        TRUE
+#define DEFAULT_USE_RING_BUFFER    FALSE
+#define DEFAULT_RING_BUFFER_MAX_SIZE (16 * 1024 * 1024) /* 16 MB */
 
 /* other defines */
 #define DEFAULT_BUFFER_SIZE 4096
@@ -123,6 +125,8 @@ enum
   PROP_TEMP_TEMPLATE,
   PROP_TEMP_LOCATION,
   PROP_TEMP_REMOVE,
+  PROP_USE_RING_BUFFER,
+  PROP_RING_BUFFER_MAX_SIZE,
   PROP_LAST
 };
 
@@ -349,6 +353,32 @@ gst_queue2_class_init (GstQueue2Class * klass)
           "Remove the temp-location after use",
           DEFAULT_TEMP_REMOVE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 
+  /**
+   * GstQueue2:use-ring-buffer
+   *
+   * When use-ring-buffer is set, buffer data into a ring buffer containing ranges
+   * of source data. Default FALSE.
+   *
+   * Since: 0.10.30
+   */
+  g_object_class_install_property (gobject_class, PROP_USE_RING_BUFFER,
+      g_param_spec_boolean ("use-ring-buffer", "Use a ring buffer",
+          "Use a ring buffer of size ring-buffer-max-size kB",
+          DEFAULT_USE_RING_BUFFER, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  /**
+   * GstQueue2:ring-buffer-max-size
+   *
+   * The maximum size of the ring buffer in kilobytes. If set to 0 kB then the size
+   * is unlimited. Default 16 megabytes.
+   *
+   * Since: 0.10.30
+   */
+  g_object_class_install_property (gobject_class, PROP_RING_BUFFER_MAX_SIZE,
+      g_param_spec_uint ("ring-buffer-max-size", "Max. ring buffer size (kB)",
+          "Max. amount of data in the ring buffer (bytes, 0=unlimited)",
+          0, G_MAXUINT, DEFAULT_RING_BUFFER_MAX_SIZE,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
   /* set several parent class virtual functions */
   gobject_class->finalize = gst_queue2_finalize;
 
@@ -2413,6 +2443,12 @@ gst_queue2_set_property (GObject * object,
     case PROP_TEMP_REMOVE:
       queue->temp_remove = g_value_get_boolean (value);
       break;
+    case PROP_USE_RING_BUFFER:
+      queue->use_ring_buffer = g_value_get_boolean (value);
+      break;
+    case PROP_RING_BUFFER_MAX_SIZE:
+      queue->ring_buffer_max_size = g_value_get_uint (value);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
@@ -2469,6 +2505,12 @@ gst_queue2_get_property (GObject * object,
     case PROP_TEMP_REMOVE:
       g_value_set_boolean (value, queue->temp_remove);
       break;
+    case PROP_USE_RING_BUFFER:
+      g_value_set_boolean (value, queue->use_ring_buffer);
+      break;
+    case PROP_RING_BUFFER_MAX_SIZE:
+      g_value_set_uint (value, queue->ring_buffer_max_size);
+      break;
     default:
       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
       break;
diff --git a/plugins/elements/gstqueue2.h b/plugins/elements/gstqueue2.h
index 92fd4b2..8c8ca3a 100644
--- a/plugins/elements/gstqueue2.h
+++ b/plugins/elements/gstqueue2.h
@@ -132,6 +132,9 @@ struct _GstQueue2
    * because we can't save it on the file */
   gboolean segment_event_received;
   GstEvent *starting_segment;
+
+  gboolean use_ring_buffer;
+  guint ring_buffer_max_size;
 };
 
 struct _GstQueue2Class
-- 
2.7.4