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gst-libs/gst/app/gstappsrc.*: Add properties and methods to configure and retrieve the min and max latencies.
Original commit message from CVS: * gst-libs/gst/app/gstappsrc.c: (gst_app_src_class_init), (gst_app_src_init), (gst_app_src_set_property), (gst_app_src_get_property), (gst_app_src_query), (gst_app_src_set_latencies), (gst_app_src_set_latency), (gst_app_src_get_latency), (gst_app_src_push_buffer_full): * gst-libs/gst/app/gstappsrc.h: Add properties and methods to configure and retrieve the min and max latencies.
This commit is contained in:
Wim Taymans
parent
7e58fe30f5
commit
0ab6c0fbc0
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@ -124,6 +124,8 @@ enum
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#define DEFAULT_PROP_FORMAT GST_FORMAT_BYTES
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#define DEFAULT_PROP_BLOCK FALSE
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#define DEFAULT_PROP_IS_LIVE FALSE
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#define DEFAULT_PROP_MIN_LATENCY -1
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#define DEFAULT_PROP_MAX_LATENCY -1
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enum
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{
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@ -135,7 +137,8 @@ enum
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PROP_FORMAT,
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PROP_BLOCK,
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PROP_IS_LIVE,
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PROP_MIN_LATENCY,
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PROP_MAX_LATENCY,
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PROP_LAST
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};
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@ -175,6 +178,9 @@ static void gst_app_src_set_property (GObject * object, guint prop_id,
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static void gst_app_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_app_src_set_latencies (GstAppSrc * appsrc,
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gboolean do_min, guint64 min, gboolean do_max, guint64 max);
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static GstFlowReturn gst_app_src_create (GstBaseSrc * bsrc,
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guint64 offset, guint size, GstBuffer ** buf);
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static gboolean gst_app_src_start (GstBaseSrc * bsrc);
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@ -185,6 +191,8 @@ static gboolean gst_app_src_do_seek (GstBaseSrc * src, GstSegment * segment);
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static gboolean gst_app_src_is_seekable (GstBaseSrc * src);
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static gboolean gst_app_src_check_get_range (GstBaseSrc * src);
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static gboolean gst_app_src_do_get_size (GstBaseSrc * src, guint64 * size);
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static gboolean gst_app_src_query (GstBaseSrc * src, GstQuery * query);
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static GstFlowReturn gst_app_src_push_buffer_action (GstAppSrc * appsrc,
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GstBuffer * buffer);
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@ -306,6 +314,28 @@ gst_app_src_class_init (GstAppSrcClass * klass)
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g_param_spec_boolean ("is-live", "Is Live",
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"Whether to act as a live source",
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DEFAULT_PROP_IS_LIVE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstAppSrc::min-latency
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*
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* The minimum latency of the source. A value of -1 will use the default
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* latency calculations of #GstBaseSrc.
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*/
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g_object_class_install_property (gobject_class, PROP_MIN_LATENCY,
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g_param_spec_int64 ("min-latency", "Min Latency",
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"The minimum latency (-1 = default)",
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-1, G_MAXINT64, DEFAULT_PROP_MIN_LATENCY,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstAppSrc::max-latency
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*
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* The maximum latency of the source. A value of -1 means an unlimited amout
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* of latency.
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*/
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g_object_class_install_property (gobject_class, PROP_MAX_LATENCY,
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g_param_spec_int64 ("max-latency", "Max Latency",
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"The maximum latency (-1 = unlimited)",
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-1, G_MAXINT64, DEFAULT_PROP_MAX_LATENCY,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstAppSrc::need-data:
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@ -395,6 +425,8 @@ gst_app_src_class_init (GstAppSrcClass * klass)
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basesrc_class->is_seekable = gst_app_src_is_seekable;
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basesrc_class->check_get_range = gst_app_src_check_get_range;
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basesrc_class->get_size = gst_app_src_do_get_size;
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basesrc_class->get_size = gst_app_src_do_get_size;
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basesrc_class->query = gst_app_src_query;
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klass->push_buffer = gst_app_src_push_buffer_action;
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klass->end_of_stream = gst_app_src_end_of_stream;
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@ -412,6 +444,8 @@ gst_app_src_init (GstAppSrc * appsrc, GstAppSrcClass * klass)
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appsrc->max_bytes = DEFAULT_PROP_MAX_BYTES;
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appsrc->format = DEFAULT_PROP_FORMAT;
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appsrc->block = DEFAULT_PROP_BLOCK;
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appsrc->min_latency = DEFAULT_PROP_MIN_LATENCY;
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appsrc->max_latency = DEFAULT_PROP_MAX_LATENCY;
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gst_base_src_set_live (GST_BASE_SRC (appsrc), DEFAULT_PROP_IS_LIVE);
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}
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@ -480,6 +514,14 @@ gst_app_src_set_property (GObject * object, guint prop_id,
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gst_base_src_set_live (GST_BASE_SRC (appsrc),
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g_value_get_boolean (value));
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break;
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case PROP_MIN_LATENCY:
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gst_app_src_set_latencies (appsrc, TRUE, g_value_get_int64 (value),
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FALSE, -1);
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break;
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case PROP_MAX_LATENCY:
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gst_app_src_set_latencies (appsrc, FALSE, -1, TRUE,
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g_value_get_int64 (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -522,6 +564,22 @@ gst_app_src_get_property (GObject * object, guint prop_id, GValue * value,
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case PROP_IS_LIVE:
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g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (appsrc)));
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break;
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case PROP_MIN_LATENCY:
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{
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guint64 min;
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gst_app_src_get_latency (appsrc, &min, NULL);
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g_value_set_int64 (value, min);
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break;
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}
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case PROP_MAX_LATENCY:
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{
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guint64 max;
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gst_app_src_get_latency (appsrc, &max, NULL);
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g_value_set_int64 (value, max);
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break;
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}
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -635,6 +693,40 @@ gst_app_src_do_get_size (GstBaseSrc * src, guint64 * size)
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return TRUE;
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}
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static gboolean
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gst_app_src_query (GstBaseSrc * src, GstQuery * query)
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{
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GstAppSrc *appsrc = GST_APP_SRC (src);
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gboolean res;
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_LATENCY:
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{
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GstClockTime min, max;
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gboolean live;
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/* Query the parent class for the defaults */
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res = gst_base_src_query_latency (src, &live, &min, &max);
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/* overwrite with our values when we need to */
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g_mutex_lock (appsrc->mutex);
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if (appsrc->min_latency != -1)
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min = appsrc->min_latency;
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if (appsrc->max_latency != -1)
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max = appsrc->max_latency;
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g_mutex_unlock (appsrc->mutex);
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gst_query_set_latency (query, live, min, max);
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break;
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}
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default:
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res = GST_BASE_SRC_CLASS (parent_class)->query (src, query);
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break;
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}
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return res;
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}
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/* will be called in push mode */
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static gboolean
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gst_app_src_do_seek (GstBaseSrc * src, GstSegment * segment)
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@ -977,6 +1069,66 @@ gst_app_src_get_max_bytes (GstAppSrc * appsrc)
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return result;
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}
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static void
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gst_app_src_set_latencies (GstAppSrc * appsrc, gboolean do_min, guint64 min,
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gboolean do_max, guint64 max)
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{
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gboolean changed = FALSE;
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g_mutex_lock (appsrc->mutex);
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if (do_min && appsrc->min_latency != min) {
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appsrc->min_latency = min;
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changed = TRUE;
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}
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if (do_max && appsrc->max_latency != max) {
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appsrc->max_latency = max;
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changed = TRUE;
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}
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g_mutex_unlock (appsrc->mutex);
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if (changed) {
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GST_DEBUG_OBJECT (appsrc, "posting latency changed");
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gst_element_post_message (GST_ELEMENT_CAST (appsrc),
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gst_message_new_latency (GST_OBJECT_CAST (appsrc)));
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}
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}
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/**
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* gst_app_src_set_latency:
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* @appsrc: a #GstAppSrc
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* @min: the min latency
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* @max: the min latency
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*
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* Configure the @min and @max latency in @src. If @min is set to -1, the
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* default latency calculations for pseudo-live sources will be used.
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*/
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void
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gst_app_src_set_latency (GstAppSrc * appsrc, guint64 min, guint64 max)
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{
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gst_app_src_set_latencies (appsrc, TRUE, min, TRUE, max);
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}
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/**
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* gst_app_src_get_latency:
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* @appsrc: a #GstAppSrc
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* @min: the min latency
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* @max: the min latency
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*
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* Retrieve the min and max latencies in @min and @max respectively.
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*/
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void
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gst_app_src_get_latency (GstAppSrc * appsrc, guint64 * min, guint64 * max)
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{
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g_return_if_fail (GST_IS_APP_SRC (appsrc));
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g_mutex_lock (appsrc->mutex);
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if (min)
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*min = appsrc->min_latency;
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if (max)
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*max = appsrc->max_latency;
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g_mutex_unlock (appsrc->mutex);
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}
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static GstFlowReturn
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gst_app_src_push_buffer_full (GstAppSrc * appsrc, GstBuffer * buffer,
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gboolean steal_ref)
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@ -79,6 +79,9 @@ struct _GstAppSrc
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guint64 queued_bytes;
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guint64 offset;
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GstAppStreamType current_type;
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guint64 min_latency;
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guint64 max_latency;
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};
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struct _GstAppSrcClass
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@ -111,6 +114,9 @@ GstAppStreamType gst_app_src_get_stream_type (GstAppSrc *appsrc);
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void gst_app_src_set_max_bytes (GstAppSrc *appsrc, guint64 max);
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guint64 gst_app_src_get_max_bytes (GstAppSrc *appsrc);
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void gst_app_src_set_latency (GstAppSrc *appsrc, guint64 min, guint64 max);
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void gst_app_src_get_latency (GstAppSrc *appsrc, guint64 *min, guint64 *max);
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GstFlowReturn gst_app_src_push_buffer (GstAppSrc *appsrc, GstBuffer *buffer);
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GstFlowReturn gst_app_src_end_of_stream (GstAppSrc *appsrc);
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