mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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[MOVED FROM GST-P-FARSIGHT] Changed dtmfsrc into a subclass of GstBaseSrc
20070913175520-4f0f6-16ca4bf93690072f3e836d1c8a5b52cf7a421916.gz
This commit is contained in:
Youness Alaoui
Edward Hervey
parent
4eab02230d
commit
854773d724
2 changed files with 94 additions and 212 deletions
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@ -231,53 +231,30 @@ GST_STATIC_PAD_TEMPLATE ("src",
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"channels = (int) 1")
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);
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static GstElementClass *parent_class = NULL;
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GST_BOILERPLATE (GstDTMFSrc, gst_dtmf_src, GstBaseSrc, GST_TYPE_BASE_SRC);
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static void gst_dtmf_src_base_init (gpointer g_class);
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static void gst_dtmf_src_class_init (GstDTMFSrcClass * klass);
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static void gst_dtmf_src_init (GstDTMFSrc * dtmfsrc, gpointer g_class);
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static void gst_dtmf_src_finalize (GObject * object);
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GType
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gst_dtmf_src_get_type (void)
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{
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static GType base_src_type = 0;
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if (G_UNLIKELY (base_src_type == 0)) {
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static const GTypeInfo base_src_info = {
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sizeof (GstDTMFSrcClass),
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(GBaseInitFunc) gst_dtmf_src_base_init,
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NULL,
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(GClassInitFunc) gst_dtmf_src_class_init,
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NULL,
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NULL,
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sizeof (GstDTMFSrc),
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0,
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(GInstanceInitFunc) gst_dtmf_src_init,
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};
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base_src_type = g_type_register_static (GST_TYPE_ELEMENT,
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"GstDTMFSrc", &base_src_info, 0);
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}
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return base_src_type;
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}
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static void gst_dtmf_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_dtmf_src_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean gst_dtmf_src_handle_event (GstPad * pad, GstEvent * event);
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static gboolean gst_dtmf_src_handle_event (GstBaseSrc *src, GstEvent * event);
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static GstStateChangeReturn gst_dtmf_src_change_state (GstElement * element,
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GstStateChange transition);
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static void gst_dtmf_src_generate_tone(GstDTMFSrcEvent *event, DTMF_KEY key,
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float duration, GstBuffer * buffer);
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static void gst_dtmf_src_push_next_tone_packet (GstDTMFSrc *dtmfsrc);
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static void gst_dtmf_src_start (GstDTMFSrc *dtmfsrc);
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static void gst_dtmf_src_stop (GstDTMFSrc *dtmfsrc);
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static GstFlowReturn gst_dtmf_src_create (GstBaseSrc * basesrc,
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guint64 offset, guint length, GstBuffer ** buffer);
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static void gst_dtmf_src_add_start_event (GstDTMFSrc *dtmfsrc,
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gint event_number, gint event_volume);
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static void gst_dtmf_src_add_stop_event (GstDTMFSrc *dtmfsrc);
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static void gst_dtmf_src_get_times (GstBaseSrc * basesrc,
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GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
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static void
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gst_dtmf_src_base_init (gpointer g_class)
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{
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@ -296,12 +273,13 @@ static void
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gst_dtmf_src_class_init (GstDTMFSrcClass * klass)
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{
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GObjectClass *gobject_class;
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GstBaseSrcClass *gstbasesrc_class;
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GstElementClass *gstelement_class;
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gobject_class = G_OBJECT_CLASS (klass);
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gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
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gstelement_class = GST_ELEMENT_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_dtmf_src_finalize);
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gobject_class->set_property =
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@ -316,17 +294,22 @@ gst_dtmf_src_class_init (GstDTMFSrcClass * klass)
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_dtmf_src_change_state);
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gstbasesrc_class->event =
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GST_DEBUG_FUNCPTR (gst_dtmf_src_handle_event);
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gstbasesrc_class->get_times =
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GST_DEBUG_FUNCPTR (gst_dtmf_src_get_times);
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gstbasesrc_class->create =
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GST_DEBUG_FUNCPTR (gst_dtmf_src_create);
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}
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static void
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gst_dtmf_src_init (GstDTMFSrc * dtmfsrc, gpointer g_class)
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{
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dtmfsrc->srcpad =
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gst_pad_new_from_static_template (&gst_dtmf_src_template, "src");
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GST_DEBUG_OBJECT (dtmfsrc, "adding src pad");
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gst_element_add_pad (GST_ELEMENT (dtmfsrc), dtmfsrc->srcpad);
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gst_pad_set_event_function (dtmfsrc->srcpad, gst_dtmf_src_handle_event);
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static void
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gst_dtmf_src_init (GstDTMFSrc * dtmfsrc, GstDTMFSrcClass *g_class)
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{
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/* we operate in time */
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gst_base_src_set_format (GST_BASE_SRC (dtmfsrc), GST_FORMAT_TIME);
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gst_base_src_set_live (GST_BASE_SRC (dtmfsrc), TRUE);
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dtmfsrc->interval = DEFAULT_PACKET_INTERVAL;
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@ -334,7 +317,6 @@ gst_dtmf_src_init (GstDTMFSrc * dtmfsrc, gpointer g_class)
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dtmfsrc->last_event = NULL;
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dtmfsrc->clock_id = NULL;
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dtmfsrc->task_paused = TRUE;
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GST_DEBUG_OBJECT (dtmfsrc, "init done");
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}
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@ -346,9 +328,6 @@ gst_dtmf_src_finalize (GObject * object)
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dtmfsrc = GST_DTMF_SRC (object);
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gst_dtmf_src_stop (dtmfsrc);
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if (dtmfsrc->event_queue) {
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g_async_queue_unref (dtmfsrc->event_queue);
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dtmfsrc->event_queue = NULL;
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@ -424,36 +403,18 @@ ret:
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}
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static gboolean
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gst_dtmf_src_handle_event (GstPad * pad, GstEvent * event)
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gst_dtmf_src_handle_event (GstBaseSrc * src, GstEvent * event)
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{
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GstDTMFSrc *dtmfsrc;
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gboolean result = FALSE;
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GstElement *parent = gst_pad_get_parent_element (pad);
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dtmfsrc = GST_DTMF_SRC (parent);
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dtmfsrc = GST_DTMF_SRC (src);
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GST_DEBUG_OBJECT (dtmfsrc, "Received an event on the src pad");
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_CUSTOM_UPSTREAM:
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{
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result = gst_dtmf_src_handle_custom_upstream (dtmfsrc, event);
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break;
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}
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/* Ideally this element should not be flushed but let's handle the event
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* just in case it is */
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case GST_EVENT_FLUSH_START:
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gst_dtmf_src_stop (dtmfsrc);
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result = TRUE;
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break;
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case GST_EVENT_FLUSH_STOP:
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gst_segment_init (&dtmfsrc->segment, GST_FORMAT_TIME);
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break;
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default:
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result = gst_pad_event_default (pad, event);
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break;
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if (GST_EVENT_TYPE (event) == GST_EVENT_CUSTOM_UPSTREAM) {
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result = gst_dtmf_src_handle_custom_upstream (dtmfsrc, event);
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}
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gst_object_unref (parent);
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gst_event_unref (event);
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return result;
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}
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@ -496,6 +457,7 @@ gst_dtmf_src_get_property (GObject * object, guint prop_id, GValue * value,
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static void
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gst_dtmf_src_set_stream_lock (GstDTMFSrc *dtmfsrc, gboolean lock)
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{
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GstPad *srcpad = GST_BASE_SRC_PAD (dtmfsrc);
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GstEvent *event;
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GstStructure *structure;
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@ -503,7 +465,7 @@ gst_dtmf_src_set_stream_lock (GstDTMFSrc *dtmfsrc, gboolean lock)
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"lock", G_TYPE_BOOLEAN, lock, NULL);
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event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM_OOB, structure);
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if (!gst_pad_push_event (dtmfsrc->srcpad, event)) {
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if (!gst_pad_push_event (srcpad, event)) {
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GST_WARNING_OBJECT (dtmfsrc, "stream-lock event not handled");
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}
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}
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@ -512,10 +474,13 @@ static void
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gst_dtmf_prepare_timestamps (GstDTMFSrc *dtmfsrc)
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{
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GstClock *clock;
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GstClockTime base_time;
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base_time = GST_ELEMENT_CAST (dtmfsrc)->base_time;
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clock = gst_element_get_clock (GST_ELEMENT (dtmfsrc));
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if (clock != NULL) {
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dtmfsrc->timestamp = gst_clock_get_time (clock);
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dtmfsrc->timestamp = gst_clock_get_time (clock) - base_time;
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gst_object_unref (clock);
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} else {
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gchar *dtmf_name = gst_element_get_name (dtmfsrc);
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@ -525,65 +490,6 @@ gst_dtmf_prepare_timestamps (GstDTMFSrc *dtmfsrc)
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}
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}
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static void
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gst_dtmf_src_start (GstDTMFSrc *dtmfsrc)
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{
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const GstCaps * caps = gst_pad_get_pad_template_caps (dtmfsrc->srcpad);
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if (!gst_pad_set_caps (dtmfsrc->srcpad, (GstCaps *)caps))
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GST_ERROR_OBJECT (dtmfsrc,
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"Failed to set caps %" GST_PTR_FORMAT " on src pad", caps);
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else
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GST_DEBUG_OBJECT (dtmfsrc,
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"caps %" GST_PTR_FORMAT " set on src pad", caps);
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dtmfsrc->task_paused = FALSE;
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if (!gst_pad_start_task (dtmfsrc->srcpad,
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(GstTaskFunction) gst_dtmf_src_push_next_tone_packet, dtmfsrc)) {
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GST_ERROR_OBJECT (dtmfsrc, "Failed to start task on src pad");
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}
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}
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static void
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gst_dtmf_src_stop (GstDTMFSrc *dtmfsrc)
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{
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GstDTMFSrcEvent *event = NULL;
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dtmfsrc->task_paused = TRUE;
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GST_OBJECT_LOCK (dtmfsrc);
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if (dtmfsrc->clock_id != NULL) {
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gst_clock_id_unschedule(dtmfsrc->clock_id);
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}
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GST_OBJECT_UNLOCK (dtmfsrc);
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event = g_malloc (sizeof(GstDTMFSrcEvent));
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event->event_type = DTMF_EVENT_TYPE_PAUSE_TASK;
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g_async_queue_push (dtmfsrc->event_queue, event);
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event = NULL;
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if (!gst_pad_pause_task (dtmfsrc->srcpad)) {
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GST_ERROR_OBJECT (dtmfsrc, "Failed to pause task on src pad");
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return;
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}
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if (dtmfsrc->last_event) {
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/* Don't forget to release the stream lock */
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gst_dtmf_src_set_stream_lock (dtmfsrc, FALSE);
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g_free (dtmfsrc->last_event);
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dtmfsrc->last_event = NULL;
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}
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/* Flushing the event queue */
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event = g_async_queue_try_pop (dtmfsrc->event_queue);
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while (event != NULL) {
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g_free (event);
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event = g_async_queue_try_pop (dtmfsrc->event_queue);
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}
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}
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static void
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gst_dtmf_src_add_start_event (GstDTMFSrc *dtmfsrc, gint event_number,
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gint event_volume)
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@ -671,51 +577,25 @@ gst_dtmf_src_generate_tone(GstDTMFSrcEvent *event, DTMF_KEY key, float duration,
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}
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static void
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gst_dtmf_src_wait_for_buffer_ts (GstDTMFSrc *dtmfsrc, GstBuffer * buf)
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gst_dtmf_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end)
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{
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GstClock *clock;
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/* for live sources, sync on the timestamp of the buffer */
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if (gst_base_src_is_live (basesrc)) {
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GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
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clock = gst_element_get_clock (GST_ELEMENT (dtmfsrc));
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if (clock != NULL) {
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GstClockReturn clock_ret;
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GstClockID clock_id;
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if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
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/* get duration to calculate end time */
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GstClockTime duration = GST_BUFFER_DURATION (buffer);
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clock_id = gst_clock_new_single_shot_id (clock, GST_BUFFER_TIMESTAMP (buf));
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gst_object_unref (clock);
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GST_OBJECT_LOCK (dtmfsrc);
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dtmfsrc->clock_id = clock_id;
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GST_OBJECT_UNLOCK (dtmfsrc);
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if (dtmfsrc->task_paused) {
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clock_ret = GST_CLOCK_UNSCHEDULED;
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} else {
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clock_ret = gst_clock_id_wait (dtmfsrc->clock_id, NULL);
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}
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GST_OBJECT_LOCK (dtmfsrc);
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dtmfsrc->clock_id = NULL;
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gst_clock_id_unref (clock_id);
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GST_OBJECT_UNLOCK (dtmfsrc);
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if (clock_ret == GST_CLOCK_UNSCHEDULED) {
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GST_DEBUG_OBJECT (dtmfsrc, "Clock wait unscheduled");
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} else {
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if (clock_ret != GST_CLOCK_OK && clock_ret != GST_CLOCK_EARLY) {
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gchar *clock_name = NULL;
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clock = gst_element_get_clock (GST_ELEMENT (dtmfsrc));
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clock_name = gst_element_get_name (clock);
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gst_object_unref (clock);
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GST_ERROR_OBJECT (dtmfsrc, "Failed to wait on clock %s", clock_name);
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g_free (clock_name);
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*start = timestamp;
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if (GST_CLOCK_TIME_IS_VALID (duration)) {
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*end = *start + duration;
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}
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}
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} else {
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gchar *dtmf_name = gst_element_get_name (dtmfsrc);
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GST_ERROR_OBJECT (dtmfsrc, "No clock set for element %s", dtmf_name);
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g_free (dtmf_name);
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*start = -1;
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*end = -1;
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}
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}
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@ -726,6 +606,7 @@ gst_dtmf_src_create_next_tone_packet (GstDTMFSrc *dtmfsrc,
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{
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GstBuffer *buf = NULL;
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gboolean send_silence = FALSE;
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GstPad *srcpad = GST_BASE_SRC_PAD (dtmfsrc);
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GST_DEBUG_OBJECT (dtmfsrc, "Creating buffer for tone %s",
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DTMF_KEYS[event->event_number].event_name);
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@ -753,24 +634,26 @@ gst_dtmf_src_create_next_tone_packet (GstDTMFSrc *dtmfsrc,
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GST_BUFFER_TIMESTAMP (buf) = dtmfsrc->timestamp;
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dtmfsrc->timestamp += GST_BUFFER_DURATION (buf);
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/* FIXME: Should we sync to clock ourselves or leave it to sink */
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gst_dtmf_src_wait_for_buffer_ts (dtmfsrc, buf);
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/* Set caps on the buffer before pushing it */
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gst_buffer_set_caps (buf, GST_PAD_CAPS (dtmfsrc->srcpad));
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gst_buffer_set_caps (buf, GST_PAD_CAPS (srcpad));
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return buf;
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}
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static void
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gst_dtmf_src_push_next_tone_packet (GstDTMFSrc *dtmfsrc)
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static GstFlowReturn
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gst_dtmf_src_create (GstBaseSrc * basesrc, guint64 offset,
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guint length, GstBuffer ** buffer)
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{
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GstBuffer *buf = NULL;
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GstFlowReturn ret;
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GstDTMFSrcEvent *event;
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GstDTMFSrc * dtmfsrc;
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dtmfsrc = GST_DTMF_SRC (basesrc);
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g_async_queue_ref (dtmfsrc->event_queue);
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start:
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if (dtmfsrc->last_event == NULL) {
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event = g_async_queue_pop (dtmfsrc->event_queue);
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@ -788,11 +671,10 @@ gst_dtmf_src_push_next_tone_packet (GstDTMFSrc *dtmfsrc)
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} else if (event->event_type == DTMF_EVENT_TYPE_PAUSE_TASK) {
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/*
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* We're pushing it back because it has to stay in there until
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* the task is really paused (and the queue will then be flushed
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* the task is really paused (and the queue will then be flushed)
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*/
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g_async_queue_push (dtmfsrc->event_queue, event);
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g_async_queue_unref (dtmfsrc->event_queue);
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return;
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}
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} else if (dtmfsrc->last_event->packet_count * dtmfsrc->interval >=
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MIN_DUTY_CYCLE) {
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@ -806,6 +688,7 @@ gst_dtmf_src_push_next_tone_packet (GstDTMFSrc *dtmfsrc)
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gst_dtmf_src_set_stream_lock (dtmfsrc, FALSE);
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g_free (dtmfsrc->last_event);
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dtmfsrc->last_event = NULL;
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goto start;
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}
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}
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}
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@ -814,19 +697,16 @@ gst_dtmf_src_push_next_tone_packet (GstDTMFSrc *dtmfsrc)
|
|||
if (dtmfsrc->last_event) {
|
||||
buf = gst_dtmf_src_create_next_tone_packet (dtmfsrc, dtmfsrc->last_event);
|
||||
|
||||
gst_buffer_ref(buf);
|
||||
|
||||
GST_DEBUG_OBJECT (dtmfsrc,
|
||||
"pushing buffer on src pad of size %d", GST_BUFFER_SIZE (buf));
|
||||
ret = gst_pad_push (dtmfsrc->srcpad, buf);
|
||||
if (ret != GST_FLOW_OK) {
|
||||
GST_ERROR_OBJECT (dtmfsrc, "Failed to push buffer on src pad");
|
||||
}
|
||||
|
||||
gst_buffer_unref(buf);
|
||||
GST_DEBUG_OBJECT (dtmfsrc, "pushed DTMF tone on src pad");
|
||||
GST_DEBUG_OBJECT (dtmfsrc, "Created buffer of size %d", GST_BUFFER_SIZE (buf));
|
||||
*buffer = buf;
|
||||
ret = GST_FLOW_OK;
|
||||
} else {
|
||||
*buffer = NULL;
|
||||
ret = GST_FLOW_WRONG_STATE;
|
||||
}
|
||||
|
||||
return ret;
|
||||
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
|
|
@ -838,23 +718,6 @@ gst_dtmf_src_change_state (GstElement * element, GstStateChange transition)
|
|||
|
||||
dtmfsrc = GST_DTMF_SRC (element);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
||||
gst_segment_init (&dtmfsrc->segment, GST_FORMAT_TIME);
|
||||
gst_pad_push_event (dtmfsrc->srcpad, gst_event_new_new_segment (FALSE,
|
||||
dtmfsrc->segment.rate, dtmfsrc->segment.format,
|
||||
dtmfsrc->segment.start, dtmfsrc->segment.stop,
|
||||
dtmfsrc->segment.time));
|
||||
/* Indicate that we don't do PRE_ROLL */
|
||||
no_preroll = TRUE;
|
||||
break;
|
||||
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
||||
gst_dtmf_src_start (dtmfsrc);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if ((result =
|
||||
GST_ELEMENT_CLASS (parent_class)->change_state (element,
|
||||
transition)) == GST_STATE_CHANGE_FAILURE)
|
||||
|
|
@ -862,10 +725,30 @@ gst_dtmf_src_change_state (GstElement * element, GstStateChange transition)
|
|||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
||||
/* Indicate that we don't do PRE_ROLL */
|
||||
gst_dtmf_src_stop (dtmfsrc);
|
||||
no_preroll = TRUE;
|
||||
break;
|
||||
{
|
||||
GstDTMFSrcEvent *event = NULL;
|
||||
|
||||
/* TODO lock the element */
|
||||
|
||||
if (dtmfsrc->last_event) {
|
||||
/* Don't forget to release the stream lock */
|
||||
gst_dtmf_src_set_stream_lock (dtmfsrc, FALSE);
|
||||
g_free (dtmfsrc->last_event);
|
||||
dtmfsrc->last_event = NULL;
|
||||
}
|
||||
|
||||
/* Flushing the event queue */
|
||||
event = g_async_queue_try_pop (dtmfsrc->event_queue);
|
||||
|
||||
while (event != NULL) {
|
||||
g_free (event);
|
||||
event = g_async_queue_try_pop (dtmfsrc->event_queue);
|
||||
}
|
||||
|
||||
/* Indicate that we don't do PRE_ROLL */
|
||||
no_preroll = TRUE;
|
||||
break;
|
||||
}
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -29,6 +29,7 @@
|
|||
|
||||
#include <gst/gst.h>
|
||||
#include <gst/gstbuffer.h>
|
||||
#include <gst/base/gstbasesrc.h>
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
|
|
@ -69,9 +70,7 @@ struct _GstDTMFSrcEvent {
|
|||
typedef struct _GstDTMFSrcEvent GstDTMFSrcEvent;
|
||||
|
||||
struct _GstDTMFSrc {
|
||||
GstElement element;
|
||||
GstPad *srcpad;
|
||||
GstSegment segment;
|
||||
GstBaseSrc parent;
|
||||
GAsyncQueue* event_queue;
|
||||
GstDTMFSrcEvent* last_event;
|
||||
GstClockID clock_id;
|
||||
|
|
@ -83,7 +82,7 @@ struct _GstDTMFSrc {
|
|||
|
||||
|
||||
struct _GstDTMFSrcClass {
|
||||
GstElementClass parent_class;
|
||||
GstBaseSrcClass parent_class;
|
||||
};
|
||||
|
||||
GType gst_dtmf_src_get_type (void);
|
||||
|
|
|
|||
Loading…
Reference in a new issue