/* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
+ * Copyright (C) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
+ * Copyright (C) 2005 Jan Schmidt <thaytan@mad.scientist.com>
+ * Copyright (C) 2007 Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
#include "config.h"
#endif
-/* Object header */
-#include "gstswitch.h"
-#include <gst/gst.h>
-
#include <string.h>
-/* This element allows runtime switching between many sources. It outputs a
- * new segment every time it switches. The input sources are expected to be
- * rate controlled/live or synced to the clock using identity sync=true upstream
- * of this element. If they are not, your cpu usage will hike up.
- *
- * Example pipelines:
- * videotestsrc pattern=0 ! identity sync=true \
- * switch ! ximagesink
- * videotestsrc pattern=1 ! identity sync=true /
- *
- * videotestsrc pattern=0 ! identity sync=true \
- * switch !
- * identity single-segment=true !
- * theoraenc ! oggmux ! filesink
- * videotestsrc pattern=1 ! identity sync=true /
- *
- * To switch both an audio and a video stream, you need 2 switch elements
- * one for audio and one for video. To make sure they are in sync, the app
- * needs to do the following when switching:
- *
- * i) Block the sink pads of both the switch elements.
- * ii) Retrieve the last-timestamp property from both the switch elements
- * iii) Set the stop-value property on both the switch elements to the
- * highest of the 2.
- * iv) Set the active-sinkpad property on the switch elements to the sink
- * pads to switch to.
- * v) Set the queue-buffers property on both the switch elements to True.
- * vi) Add buffer pad probes on the active sinkpad of each of the switch
- * elements.
- * vii) Unblock the sink pads of both the swith elements.
- * viii) In the pad probes, store the buffer timestamp of the buffer that
- * comes in and remove the pad probe.
- * ix) Once both pad probes have been fired (one for video, one for audio),
- * then set the start-value property on both the switch elements to the
- * lower of the 2 buffer timestamps and set the queue-buffers property
- * on both the switch elements to False.
- *
- */
-enum
-{
- ARG_0,
- ARG_NB_SOURCES,
- ARG_ACTIVE_SOURCE,
- ARG_START_VALUE,
- ARG_STOP_VALUE,
- ARG_LAST_TS,
- ARG_QUEUE_BUFFERS
-};
+#include "gstswitch.h"
+
+GST_DEBUG_CATEGORY_STATIC (stream_selector_debug);
+#define GST_CAT_DEFAULT stream_selector_debug
-GST_DEBUG_CATEGORY_STATIC (switch_debug);
-#define GST_CAT_DEFAULT switch_debug
-/* ElementFactory information */
-static const GstElementDetails gst_switch_details =
-GST_ELEMENT_DETAILS ("Switch",
+static const GstElementDetails gst_stream_selector_details =
+GST_ELEMENT_DETAILS ("StreamSelector",
"Generic",
- "N-to-1 input switching",
+ "N-to-1 input stream_selectoring",
"Julien Moutte <julien@moutte.net>\n"
- "Zaheer Merali <zaheerabbas at merali dot org>");
+ "Ronald S. Bultje <rbultje@ronald.bitfreak.net>\n"
+ "Jan Schmidt <thaytan@mad.scientist.com>\n"
+ "Wim Taymans <wim.taymans@gmail.com>");
-static GstStaticPadTemplate gst_switch_sink_factory =
+static GstStaticPadTemplate gst_stream_selector_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink%d",
GST_PAD_SINK,
GST_PAD_REQUEST,
GST_STATIC_CAPS_ANY);
-static GstStaticPadTemplate gst_switch_src_factory =
+static GstStaticPadTemplate gst_stream_selector_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
-static GstElementClass *parent_class = NULL;
-static GstCaps *gst_switch_getcaps (GstPad * pad);
-static GList *gst_switch_get_linked_pads (GstPad * pad);
-static GstFlowReturn gst_switch_bufferalloc (GstPad * pad, guint64 offset,
- guint size, GstCaps * caps, GstBuffer ** buf);
-static GstFlowReturn gst_switch_chain (GstPad * pad, GstBuffer * buf);
-static gboolean gst_switch_event (GstPad * pad, GstEvent * event);
+enum
+{
+ PROP_ACTIVE_PAD = 1
+};
-/* ============================================================= */
-/* */
-/* Private Methods */
-/* */
-/* ============================================================= */
+static gboolean gst_stream_selector_is_active_sinkpad (GstStreamSelector * sel,
+ GstPad * pad);
+static GstPad *gst_stream_selector_activate_sinkpad (GstStreamSelector * sel,
+ GstPad * pad);
+static GstPad *gst_stream_selector_get_linked_pad (GstPad * pad,
+ gboolean strict);
+
+#define GST_TYPE_SELECTOR_PAD \
+ (gst_selector_pad_get_type())
+#define GST_SELECTOR_PAD(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SELECTOR_PAD, GstSelectorPad))
+#define GST_SELECTOR_PAD_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SELECTOR_PAD, GstSelectorPadClass))
+#define GST_IS_SELECTOR_PAD(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SELECTOR_PAD))
+#define GST_IS_SELECTOR_PAD_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SELECTOR_PAD))
+#define GST_SELECTOR_PAD_CAST(obj) \
+ ((GstSelectorPad *)(obj))
+
+typedef struct _GstSelectorPad GstSelectorPad;
+typedef struct _GstSelectorPadClass GstSelectorPadClass;
+
+struct _GstSelectorPad
+{
+ GstPad parent;
+ gboolean active;
+ gboolean eos;
+ gboolean segment_pending;
+ GstSegment segment;
+};
-static void
-gst_switch_release_pad (GstElement * element, GstPad * pad)
+struct _GstSelectorPadClass
{
- GstSwitch *gstswitch = NULL;
+ GstPadClass parent;
+};
- g_return_if_fail (GST_IS_SWITCH (element));
+static void gst_selector_pad_class_init (GstSelectorPadClass * klass);
+static void gst_selector_pad_init (GstSelectorPad * pad);
+static void gst_selector_pad_finalize (GObject * object);
- gstswitch = GST_SWITCH (element);
+static GstPadClass *selector_pad_parent_class = NULL;
- GST_LOG_OBJECT (gstswitch, "releasing requested pad %p", pad);
+static void gst_selector_pad_reset (GstSelectorPad * pad);
+static gboolean gst_selector_pad_event (GstPad * pad, GstEvent * event);
+static GstCaps *gst_selector_pad_getcaps (GstPad * pad);
+static GList *gst_selector_pad_get_linked_pads (GstPad * pad);
+static GstFlowReturn gst_selector_pad_chain (GstPad * pad, GstBuffer * buf);
+static GstFlowReturn gst_selector_pad_bufferalloc (GstPad * pad,
+ guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
- gst_element_remove_pad (element, pad);
- GST_OBJECT_LOCK (gstswitch);
- gstswitch->nb_sinkpads--;
- GST_SWITCH_LOCK (gstswitch);
- if (gstswitch->active_sinkpad == pad) {
- gst_object_unref (gstswitch->active_sinkpad);
- gstswitch->active_sinkpad = NULL;
- if (gstswitch->nb_sinkpads == 0) {
- GstIterator *iter =
- gst_element_iterate_sink_pads (GST_ELEMENT (gstswitch));
- gpointer active_sinkpad_store = (gpointer) gstswitch->active_sinkpad;
+static GType
+gst_selector_pad_get_type (void)
+{
+ static GType selector_pad_type = 0;
- if (gst_iterator_next (iter, &active_sinkpad_store) == GST_ITERATOR_DONE) {
- GST_LOG_OBJECT (gstswitch, "active pad now %p",
- gstswitch->active_sinkpad);
- } else {
- GST_LOG_OBJECT (gstswitch, "could not get first sinkpad");
- }
- gst_iterator_free (iter);
- }
+ if (!selector_pad_type) {
+ static const GTypeInfo selector_pad_info = {
+ sizeof (GstSelectorPadClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_selector_pad_class_init,
+ NULL,
+ NULL,
+ sizeof (GstSelectorPad),
+ 0,
+ (GInstanceInitFunc) gst_selector_pad_init,
+ };
+
+ selector_pad_type =
+ g_type_register_static (GST_TYPE_PAD, "GstSwitchPad",
+ &selector_pad_info, 0);
}
- GST_SWITCH_UNLOCK (gstswitch);
- GST_OBJECT_UNLOCK (gstswitch);
+ return selector_pad_type;
}
-static GstPad *
-gst_switch_request_new_pad (GstElement * element,
- GstPadTemplate * templ, const gchar * unused)
+static void
+gst_selector_pad_class_init (GstSelectorPadClass * klass)
{
- gchar *name = NULL;
- GstPad *sinkpad = NULL;
- GstSwitch *gstswitch = NULL;
+ GObjectClass *gobject_class;
- g_return_val_if_fail (GST_IS_SWITCH (element), NULL);
+ gobject_class = (GObjectClass *) klass;
+
+ selector_pad_parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->finalize = gst_selector_pad_finalize;
+}
+
+static void
+gst_selector_pad_init (GstSelectorPad * pad)
+{
+}
+
+static void
+gst_selector_pad_finalize (GObject * object)
+{
+ GstSelectorPad *pad;
+
+ pad = GST_SELECTOR_PAD_CAST (object);
- gstswitch = GST_SWITCH (element);
+ G_OBJECT_CLASS (selector_pad_parent_class)->finalize (object);
+}
+
+static void
+gst_selector_pad_reset (GstSelectorPad * pad)
+{
+ pad->active = FALSE;
+ pad->eos = FALSE;
+ gst_segment_init (&pad->segment, GST_FORMAT_UNDEFINED);
+}
- /* We only provide requested sink pads */
- if (templ->direction != GST_PAD_SINK) {
- GST_LOG_OBJECT (gstswitch, "requested a non sink pad");
+/* strictly get the linked pad from the sinkpad. If the pad is active we return
+ * the srcpad else we return NULL */
+static GList *
+gst_selector_pad_get_linked_pads (GstPad * pad)
+{
+ GstPad *otherpad;
+
+ otherpad = gst_stream_selector_get_linked_pad (pad, TRUE);
+ if (!otherpad)
return NULL;
- }
- GST_OBJECT_LOCK (gstswitch);
- name = g_strdup_printf ("sink%d", gstswitch->nb_sinkpads);
+ /* need to drop the ref, internal linked pads is not MT safe */
+ gst_object_unref (otherpad);
- sinkpad = gst_pad_new_from_template (templ, name);
+ return g_list_append (NULL, otherpad);
+}
- if (name)
- g_free (name);
+static gboolean
+gst_selector_pad_event (GstPad * pad, GstEvent * event)
+{
+ gboolean res = TRUE;
+ gboolean forward = TRUE;
+ GstStreamSelector *sel;
+ GstSelectorPad *selpad;
- GST_SWITCH_LOCK (gstswitch);
- if (gstswitch->active_sinkpad == NULL)
- gstswitch->active_sinkpad = gst_object_ref (sinkpad);
- GST_SWITCH_UNLOCK (gstswitch);
- GST_OBJECT_UNLOCK (gstswitch);
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+ selpad = GST_SELECTOR_PAD_CAST (pad);
- gst_pad_set_getcaps_function (sinkpad,
- GST_DEBUG_FUNCPTR (gst_switch_getcaps));
- gst_pad_set_chain_function (sinkpad, GST_DEBUG_FUNCPTR (gst_switch_chain));
- gst_pad_set_internal_link_function (sinkpad,
- GST_DEBUG_FUNCPTR (gst_switch_get_linked_pads));
- gst_pad_set_bufferalloc_function (sinkpad,
- GST_DEBUG_FUNCPTR (gst_switch_bufferalloc));
- gst_pad_set_event_function (sinkpad, GST_DEBUG_FUNCPTR (gst_switch_event));
- gst_pad_set_active (sinkpad, TRUE);
+ /* only forward if we are dealing with the active sinkpad */
+ forward = gst_stream_selector_is_active_sinkpad (sel, pad);
- gst_element_add_pad (GST_ELEMENT (gstswitch), sinkpad);
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_FLUSH_STOP:
+ gst_selector_pad_reset (selpad);
+ break;
+ case GST_EVENT_NEWSEGMENT:
+ {
+ gboolean update;
+ GstFormat format;
+ gdouble rate, arate;
+ gint64 start, stop, time;
+
+ gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
+ &start, &stop, &time);
+
+ GST_DEBUG_OBJECT (sel,
+ "configured NEWSEGMENT update %d, rate %lf, applied rate %lf, "
+ "format %d, "
+ "%" G_GINT64_FORMAT " -- %" G_GINT64_FORMAT ", time %"
+ G_GINT64_FORMAT, update, rate, arate, format, start, stop, time);
+
+ gst_segment_set_newsegment_full (&selpad->segment, update,
+ rate, arate, format, start, stop, time);
+ /* if we are not going to forward the segment, mark the segment as
+ * pending */
+ if (!forward)
+ selpad->segment_pending = TRUE;
+ break;
+ }
+ case GST_EVENT_EOS:
+ selpad->eos = TRUE;
+ break;
+ default:
+ break;
+ }
+ if (forward)
+ res = gst_pad_push_event (sel->srcpad, event);
- gstswitch->nb_sinkpads++;
+ gst_object_unref (sel);
- return sinkpad;
+ return res;
+}
+
+static GstCaps *
+gst_selector_pad_getcaps (GstPad * pad)
+{
+ GstStreamSelector *sel;
+ GstCaps *caps;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+
+ GST_DEBUG_OBJECT (sel, "Getting caps of srcpad peer");
+ caps = gst_pad_peer_get_caps (sel->srcpad);
+ if (caps == NULL)
+ caps = gst_caps_new_any ();
+
+ gst_object_unref (sel);
+
+ return caps;
}
static GstFlowReturn
-gst_switch_chain (GstPad * pad, GstBuffer * buf)
+gst_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
+ guint size, GstCaps * caps, GstBuffer ** buf)
{
- GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
- GstFlowReturn res;
+ GstStreamSelector *sel;
+ GstFlowReturn result;
GstPad *active_sinkpad;
- GST_SWITCH_LOCK (gstswitch);
- active_sinkpad = gstswitch->active_sinkpad;
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
- /* Ignore buffers from pads except the selected one */
+ active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
+
+ /* Fallback allocation for buffers from pads except the selected one */
if (pad != active_sinkpad) {
- GST_SWITCH_UNLOCK (gstswitch);
+ GST_DEBUG_OBJECT (sel,
+ "Pad %s:%s is not selected. Performing fallback allocation",
+ GST_DEBUG_PAD_NAME (pad));
- GST_LOG_OBJECT (gstswitch, "Ignoring buffer %p from pad %s:%s",
- buf, GST_DEBUG_PAD_NAME (pad));
+ *buf = NULL;
+ result = GST_FLOW_OK;
+ } else {
+ result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
- gst_object_unref (gstswitch);
- gst_buffer_unref (buf);
- return GST_FLOW_OK;
+ /* FIXME: HACK. If buffer alloc returns not-linked, perform a fallback
+ * allocation. This should NOT be necessary, because playbin should
+ * properly block the source pad from running until it's finished hooking
+ * everything up, but playbin needs refactoring first. */
+ if (result == GST_FLOW_NOT_LINKED) {
+ GST_DEBUG_OBJECT (sel,
+ "No peer pad yet - performing fallback allocation for pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+
+ *buf = NULL;
+ result = GST_FLOW_OK;
+ }
}
- /* check if we need to send a new segment event */
- if (gstswitch->need_to_send_newsegment && !gstswitch->queue_buffers) {
- GstEvent *event;
- GList *buffers;
-
- /* check to see if we need to send a new segment update for stop */
- if (gstswitch->previous_sinkpad != NULL) {
- if (gstswitch->stop_value != GST_CLOCK_TIME_NONE) {
- GstEvent *prev_newsegment =
- (GstEvent *) g_hash_table_lookup (gstswitch->newsegment_events,
- gstswitch->previous_sinkpad);
-
- if (prev_newsegment) {
- /* need to send a new segment update changing stop */
- gboolean update;
- gdouble rate, applied_rate;
- GstFormat format;
- gint64 start, stop, position;
- GstEvent *newsegment_event;
-
- gst_event_parse_new_segment_full (prev_newsegment, &update, &rate,
- &applied_rate, &format, &start, &stop, &position);
- GST_DEBUG_OBJECT (gstswitch,
- "Sending new segment update with stop of %" G_GUINT64_FORMAT
- "and start of %" G_GUINT64_FORMAT, gstswitch->stop_value,
- gstswitch->current_start);
- newsegment_event = gst_event_new_new_segment_full (TRUE, rate,
- applied_rate, format, gstswitch->current_start,
- gstswitch->stop_value, position);
- GST_SWITCH_UNLOCK (gstswitch);
- gst_pad_push_event (gstswitch->srcpad, newsegment_event);
- GST_SWITCH_LOCK (gstswitch);
- } else {
- GST_WARNING_OBJECT (gstswitch,
- "Sinkpad %s:%s had no previous new segment!",
- GST_DEBUG_PAD_NAME (gstswitch->previous_sinkpad));
- }
+ gst_object_unref (sel);
- }
- gst_object_unref (GST_OBJECT (gstswitch->previous_sinkpad));
- gstswitch->previous_sinkpad = NULL;
- }
- /* retrieve event from hash table */
- event =
- (GstEvent *) g_hash_table_lookup (gstswitch->newsegment_events, pad);
- if (event) {
- /* create a copy of this event so we can change start to match
- * the start time of this buffer */
- gboolean update;
- gdouble rate, applied_rate;
- GstFormat format;
- gint64 start, stop, position;
- GstEvent *newsegment_event;
-
- gst_event_parse_new_segment_full (event, &update, &rate, &applied_rate,
- &format, &start, &stop, &position);
- if (gstswitch->start_value <= GST_BUFFER_TIMESTAMP (buf)
- && gstswitch->start_value != GST_CLOCK_TIME_NONE) {
- start = gstswitch->start_value;
- } else {
- start = GST_BUFFER_TIMESTAMP (buf);
- }
- if (start == GST_CLOCK_TIME_NONE) {
- GST_WARNING_OBJECT (gstswitch,
- "new segment event requested to be sent but start value is NONE");
- }
- newsegment_event = gst_event_new_new_segment_full (FALSE, rate,
- applied_rate, format, start, stop, position);
- GST_SWITCH_UNLOCK (gstswitch);
- gst_pad_push_event (gstswitch->srcpad, newsegment_event);
- GST_SWITCH_LOCK (gstswitch);
- gstswitch->need_to_send_newsegment = FALSE;
- gstswitch->current_start = start;
- GST_DEBUG_OBJECT (gstswitch,
- "Sending new segment with start of %" G_GUINT64_FORMAT, start);
- } else {
- GST_WARNING_OBJECT (gstswitch,
- "Couldn't find new segment for pad %s in hashtable",
- GST_PAD_NAME (pad));
- }
- /* reset stop and start value */
- gstswitch->start_value = GST_CLOCK_TIME_NONE;
- gstswitch->stop_value = GST_CLOCK_TIME_NONE;
- /* send all the stored buffers if any */
- buffers =
- g_hash_table_lookup (gstswitch->stored_buffers,
- gstswitch->active_sinkpad);
- while (buffers != NULL) {
- gst_buffer_ref (GST_BUFFER (buffers->data));
- GST_SWITCH_UNLOCK (gstswitch);
- gst_pad_push (gstswitch->srcpad, GST_BUFFER (buffers->data));
- GST_SWITCH_LOCK (gstswitch);
- buffers = buffers->next;
- }
- g_hash_table_remove (gstswitch->stored_buffers, gstswitch->active_sinkpad);
+ return result;
+}
+
+static GstFlowReturn
+gst_selector_pad_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstStreamSelector *sel;
+ GstFlowReturn res;
+ GstPad *active_sinkpad;
+ GstSelectorPad *selpad;
+ GstClockTime timestamp;
+ GstSegment *seg;
+
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+ seg = &selpad->segment;
+
+ active_sinkpad = gst_stream_selector_activate_sinkpad (sel, pad);
+
+ timestamp = GST_BUFFER_TIMESTAMP (buf);
+ if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
+ GST_DEBUG_OBJECT (sel, "received timestamp %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (timestamp));
+ gst_segment_set_last_stop (seg, seg->format, timestamp);
}
- gstswitch->last_ts = GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf);
- if (!gstswitch->queue_buffers) {
- /* forward */
- GST_LOG_OBJECT (gstswitch, "Forwarding buffer %p from pad %s:%s to %s:%s",
- buf, GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (gstswitch->srcpad));
- GST_SWITCH_UNLOCK (gstswitch);
- res = gst_pad_push (gstswitch->srcpad, buf);
- GST_SWITCH_LOCK (gstswitch);
- GST_LOG_OBJECT (gstswitch, "Finished pushing buffer");
- } else {
- GList *buffers;
- gboolean lookup_res = TRUE;
-
- buffers = g_hash_table_lookup (gstswitch->stored_buffers, active_sinkpad);
- if (buffers == NULL)
- lookup_res = FALSE;
- buffers = g_list_append (buffers, buf);
- /* only need to insert it if it was NULL before because we appended */
- if (!lookup_res)
- g_hash_table_insert (gstswitch->stored_buffers, active_sinkpad, buffers);
- res = GST_FLOW_OK;
+ /* Ignore buffers from pads except the selected one */
+ if (pad != active_sinkpad)
+ goto ignore;
+
+ /* if we have a pending segment, push it out now */
+ if (selpad->segment_pending) {
+ gst_pad_push_event (sel->srcpad, gst_event_new_new_segment_full (FALSE,
+ seg->rate, seg->applied_rate, seg->format, seg->start, seg->stop,
+ seg->time));
+
+ selpad->segment_pending = FALSE;
}
- GST_SWITCH_UNLOCK (gstswitch);
- gst_object_unref (gstswitch);
+ /* forward */
+ GST_DEBUG_OBJECT (sel, "Forwarding buffer %p from pad %s:%s", buf,
+ GST_DEBUG_PAD_NAME (pad));
+ res = gst_pad_push (sel->srcpad, buf);
+done:
+ gst_object_unref (sel);
return res;
+ /* dropped buffers */
+ignore:
+ {
+ GST_DEBUG_OBJECT (sel, "Ignoring buffer %p from pad %s:%s",
+ buf, GST_DEBUG_PAD_NAME (pad));
+ gst_buffer_unref (buf);
+ res = GST_FLOW_NOT_LINKED;
+ goto done;
+ }
+
}
-static gboolean
-gst_switch_event (GstPad * pad, GstEvent * event)
+static void gst_stream_selector_dispose (GObject * object);
+static void gst_stream_selector_init (GstStreamSelector * sel);
+static void gst_stream_selector_base_init (GstStreamSelectorClass * klass);
+static void gst_stream_selector_class_init (GstStreamSelectorClass * klass);
+static void gst_stream_selector_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_stream_selector_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+static GstPad *gst_stream_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * unused);
+static void gst_stream_selector_release_pad (GstElement * element,
+ GstPad * pad);
+static GList *gst_stream_selector_get_linked_pads (GstPad * pad);
+static GstCaps *gst_stream_selector_getcaps (GstPad * pad);
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_stream_selector_get_type (void)
{
- GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
- gboolean ret = TRUE;
+ static GType stream_selector_type = 0;
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_NEWSEGMENT:
- GST_SWITCH_LOCK (gstswitch);
- /* need to put in or replace what's in hash table */
- g_hash_table_replace (gstswitch->newsegment_events, pad, event);
- if (pad == gstswitch->active_sinkpad) {
- if (!gstswitch->need_to_send_newsegment) {
- gstswitch->need_to_send_newsegment = TRUE;
- }
- }
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- default:
- ret = gst_pad_event_default (pad, event);
- break;
+ if (!stream_selector_type) {
+ static const GTypeInfo stream_selector_info = {
+ sizeof (GstStreamSelectorClass),
+ (GBaseInitFunc) gst_stream_selector_base_init,
+ NULL,
+ (GClassInitFunc) gst_stream_selector_class_init,
+ NULL,
+ NULL,
+ sizeof (GstStreamSelector),
+ 0,
+ (GInstanceInitFunc) gst_stream_selector_init,
+ };
+ stream_selector_type =
+ g_type_register_static (GST_TYPE_ELEMENT,
+ "GstSwitch", &stream_selector_info, 0);
+ GST_DEBUG_CATEGORY_INIT (stream_selector_debug,
+ "streamselector", 0, "A stream-selector element");
}
- gst_object_unref (gstswitch);
- return ret;
+
+ return stream_selector_type;
}
-/* =========================================== */
-/* */
-/* Properties */
-/* */
-/* =========================================== */
+static void
+gst_stream_selector_base_init (GstStreamSelectorClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_set_details (element_class, &gst_stream_selector_details);
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_stream_selector_sink_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_stream_selector_src_factory));
+}
static void
-gst_switch_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
+gst_stream_selector_class_init (GstStreamSelectorClass * klass)
{
- GstSwitch *gstswitch = NULL;
- const gchar *pad_name;
- GstPad *pad = NULL;
- GstPad **active_pad_p;
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
- g_return_if_fail (GST_IS_SWITCH (object));
+ parent_class = g_type_class_peek_parent (klass);
+ gobject_class->set_property =
+ GST_DEBUG_FUNCPTR (gst_stream_selector_set_property);
+ gobject_class->get_property =
+ GST_DEBUG_FUNCPTR (gst_stream_selector_get_property);
+ g_object_class_install_property (gobject_class, PROP_ACTIVE_PAD,
+ g_param_spec_string ("active-pad", "Active pad",
+ "Name of the currently" " active sink pad", NULL, G_PARAM_READWRITE));
+ gobject_class->dispose = gst_stream_selector_dispose;
+ gstelement_class->request_new_pad = gst_stream_selector_request_new_pad;
+ gstelement_class->release_pad = gst_stream_selector_release_pad;
+}
- gstswitch = GST_SWITCH (object);
+static void
+gst_stream_selector_init (GstStreamSelector * sel)
+{
+ sel->srcpad = gst_pad_new ("src", GST_PAD_SRC);
+ gst_pad_set_internal_link_function (sel->srcpad,
+ GST_DEBUG_FUNCPTR (gst_stream_selector_get_linked_pads));
+ gst_pad_set_getcaps_function (sel->srcpad,
+ GST_DEBUG_FUNCPTR (gst_stream_selector_getcaps));
+ gst_element_add_pad (GST_ELEMENT (sel), sel->srcpad);
+ /* sinkpad management */
+ sel->active_sinkpad = NULL;
+ sel->nb_sinkpads = 0;
+ gst_segment_init (&sel->segment, GST_FORMAT_UNDEFINED);
+}
+
+static void
+gst_stream_selector_dispose (GObject * object)
+{
+ GstStreamSelector *sel = GST_STREAM_SELECTOR (object);
+
+ if (sel->active_sinkpad) {
+ gst_object_unref (sel->active_sinkpad);
+ sel->active_sinkpad = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_stream_selector_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstStreamSelector *sel = GST_STREAM_SELECTOR (object);
switch (prop_id) {
- case ARG_ACTIVE_SOURCE:
- pad_name = g_value_get_string (value);
- if (strcmp (pad_name, "") != 0) {
- pad = gst_element_get_pad (GST_ELEMENT (object), pad_name);
- }
+ case PROP_ACTIVE_PAD:{
+ const gchar *pad_name = g_value_get_string (value);
+ GstPad *pad = NULL;
+ GstPad **active_pad_p;
- GST_SWITCH_LOCK (gstswitch);
- if (pad == gstswitch->active_sinkpad) {
- GST_SWITCH_UNLOCK (gstswitch);
- if (pad)
- gst_object_unref (pad);
- break;
- }
- active_pad_p = &gstswitch->active_sinkpad;
- if (gstswitch->previous_sinkpad != NULL) {
- gst_object_unref (GST_OBJECT (gstswitch->previous_sinkpad));
- }
- gstswitch->previous_sinkpad = gstswitch->active_sinkpad;
- gst_object_ref (GST_OBJECT (gstswitch->previous_sinkpad));
- gst_object_replace ((GstObject **) active_pad_p, GST_OBJECT_CAST (pad));
- if (pad)
- gst_object_unref (pad);
- GST_DEBUG_OBJECT (gstswitch, "New active pad is %" GST_PTR_FORMAT,
- gstswitch->active_sinkpad);
- gstswitch->need_to_send_newsegment = TRUE;
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- case ARG_START_VALUE:
- GST_SWITCH_LOCK (gstswitch);
- gstswitch->start_value = g_value_get_uint64 (value);
- /* let's send new segment here instead of waiting for the next buffer
- * as we know the start value for the new segment */
- /* check if we need to send a new segment event */
- if (gstswitch->start_value != GST_CLOCK_TIME_NONE &&
- gstswitch->need_to_send_newsegment) {
- GstEvent *event;
-
- /* check to see if we need to send a new segment update for stop */
- if (gstswitch->previous_sinkpad != NULL) {
- if (gstswitch->stop_value != GST_CLOCK_TIME_NONE) {
- GstEvent *prev_newsegment =
- (GstEvent *) g_hash_table_lookup (gstswitch->newsegment_events,
- gstswitch->previous_sinkpad);
-
- if (prev_newsegment) {
- /* need to send a new segment update changing stop */
- gboolean update;
- gdouble rate, applied_rate;
- GstFormat format;
- gint64 start, stop, position;
- GstEvent *newsegment_event;
-
- gst_event_parse_new_segment_full (prev_newsegment, &update, &rate,
- &applied_rate, &format, &start, &stop, &position);
- GST_DEBUG_OBJECT (gstswitch,
- "Sending new segment update with stop of %" G_GUINT64_FORMAT
- "and start of %" G_GUINT64_FORMAT, gstswitch->stop_value,
- gstswitch->current_start);
- newsegment_event = gst_event_new_new_segment_full (TRUE, rate,
- applied_rate, format, gstswitch->current_start,
- gstswitch->stop_value, position);
- GST_SWITCH_UNLOCK (gstswitch);
- gst_pad_push_event (gstswitch->srcpad, newsegment_event);
- GST_SWITCH_LOCK (gstswitch);
- } else {
- GST_WARNING_OBJECT (gstswitch,
- "Sinkpad %s:%s had no previous new segment!",
- GST_DEBUG_PAD_NAME (gstswitch->previous_sinkpad));
- }
-
- }
- gst_object_unref (GST_OBJECT (gstswitch->previous_sinkpad));
- gstswitch->previous_sinkpad = NULL;
- }
- /* retrieve event from hash table */
- event =
- (GstEvent *) g_hash_table_lookup (gstswitch->newsegment_events,
- gstswitch->active_sinkpad);
- if (event) {
- /* create a copy of this event so we can change start to match
- * the start time of this buffer */
- gboolean update;
- gdouble rate, applied_rate;
- GstFormat format;
- gint64 start, stop, position;
- GstEvent *newsegment_event;
-
- gst_event_parse_new_segment_full (event, &update, &rate,
- &applied_rate, &format, &start, &stop, &position);
- start = gstswitch->start_value;
- if (start == GST_CLOCK_TIME_NONE) {
- GST_WARNING_OBJECT (gstswitch,
- "new segment event requested to be sent but start value is NONE");
- }
- newsegment_event = gst_event_new_new_segment_full (FALSE, rate,
- applied_rate, format, start, stop, position);
- GST_SWITCH_UNLOCK (gstswitch);
- gst_pad_push_event (gstswitch->srcpad, newsegment_event);
- GST_SWITCH_LOCK (gstswitch);
- gstswitch->need_to_send_newsegment = FALSE;
- gstswitch->current_start = start;
- GST_DEBUG_OBJECT (gstswitch,
- "Sending new segment with start of %" G_GUINT64_FORMAT, start);
+ if (strcmp (pad_name, "") != 0)
+ pad = gst_element_get_pad (GST_ELEMENT (object), pad_name);
+ GST_OBJECT_LOCK (object);
+ if (pad != sel->active_sinkpad) {
+ GstSelectorPad *selpad;
+
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+ /* we can only activate pads that have data received */
+ if (selpad && !selpad->active) {
+ GST_DEBUG_OBJECT (sel, "No data received on pad %" GST_PTR_FORMAT,
+ pad);
} else {
- GST_WARNING_OBJECT (gstswitch,
- "Couldn't find new segment for pad %s in hashtable",
- GST_PAD_NAME (gstswitch->active_sinkpad));
+ active_pad_p = &sel->active_sinkpad;
+ gst_object_replace ((GstObject **) active_pad_p,
+ GST_OBJECT_CAST (pad));
+ GST_DEBUG_OBJECT (sel, "New active pad is %" GST_PTR_FORMAT,
+ sel->active_sinkpad);
}
- /* reset stop and start value */
- gstswitch->start_value = GST_CLOCK_TIME_NONE;
- gstswitch->stop_value = GST_CLOCK_TIME_NONE;
}
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- case ARG_STOP_VALUE:
- GST_SWITCH_LOCK (gstswitch);
- gstswitch->stop_value = g_value_get_uint64 (value);
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- case ARG_QUEUE_BUFFERS:
- GST_SWITCH_LOCK (gstswitch);
- gstswitch->queue_buffers = g_value_get_boolean (value);
- GST_SWITCH_UNLOCK (gstswitch);
+ GST_OBJECT_UNLOCK (object);
+ if (pad)
+ gst_object_unref (pad);
break;
+ }
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
static void
-gst_switch_get_property (GObject * object, guint prop_id,
+gst_stream_selector_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
- GstSwitch *gstswitch = NULL;
-
- g_return_if_fail (GST_IS_SWITCH (object));
-
- gstswitch = GST_SWITCH (object);
+ GstStreamSelector *sel = GST_STREAM_SELECTOR (object);
switch (prop_id) {
- case ARG_ACTIVE_SOURCE:
- GST_SWITCH_LOCK (gstswitch);
- if (gstswitch->active_sinkpad != NULL) {
- g_value_take_string (value,
- gst_pad_get_name (gstswitch->active_sinkpad));
+ case PROP_ACTIVE_PAD:{
+ GST_OBJECT_LOCK (object);
+ if (sel->active_sinkpad != NULL) {
+ g_value_take_string (value, gst_pad_get_name (sel->active_sinkpad));
} else {
g_value_set_string (value, "");
}
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- case ARG_NB_SOURCES:
- GST_OBJECT_LOCK (object);
- g_value_set_uint (value, gstswitch->nb_sinkpads);
GST_OBJECT_UNLOCK (object);
break;
- case ARG_START_VALUE:
- GST_SWITCH_LOCK (gstswitch);
- g_value_set_uint64 (value, gstswitch->start_value);
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- case ARG_STOP_VALUE:
- GST_SWITCH_LOCK (gstswitch);
- g_value_set_uint64 (value, gstswitch->stop_value);
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- case ARG_LAST_TS:
- GST_SWITCH_LOCK (gstswitch);
- g_value_set_uint64 (value, gstswitch->last_ts);
- GST_SWITCH_UNLOCK (gstswitch);
- break;
- case ARG_QUEUE_BUFFERS:
- GST_SWITCH_LOCK (gstswitch);
- g_value_set_boolean (value, gstswitch->queue_buffers);
- GST_SWITCH_UNLOCK (gstswitch);
- break;
+ }
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
static GstPad *
-gst_switch_get_linked_pad (GstPad * pad, gboolean strict)
+gst_stream_selector_get_linked_pad (GstPad * pad, gboolean strict)
{
- GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
+ GstStreamSelector *sel;
GstPad *otherpad = NULL;
- if (pad == gstswitch->srcpad)
- otherpad = gstswitch->active_sinkpad;
- else if (pad == gstswitch->active_sinkpad || !strict)
- otherpad = gstswitch->srcpad;
-
- gst_object_unref (gstswitch);
-
+ sel = GST_STREAM_SELECTOR (gst_pad_get_parent (pad));
+ GST_OBJECT_LOCK (sel);
+ if (pad == sel->srcpad)
+ otherpad = sel->active_sinkpad;
+ else if (pad == sel->active_sinkpad || !strict)
+ otherpad = sel->srcpad;
+ if (otherpad)
+ gst_object_ref (otherpad);
+ GST_OBJECT_UNLOCK (sel);
+ gst_object_unref (sel);
return otherpad;
}
static GstCaps *
-gst_switch_getcaps (GstPad * pad)
+gst_stream_selector_getcaps (GstPad * pad)
{
GstPad *otherpad;
GstObject *parent;
GstCaps *caps;
-
+ otherpad = gst_stream_selector_get_linked_pad (pad, FALSE);
parent = gst_object_get_parent (GST_OBJECT (pad));
- GST_SWITCH_LOCK (GST_SWITCH (parent));
- otherpad = gst_switch_get_linked_pad (pad, FALSE);
- GST_SWITCH_UNLOCK (GST_SWITCH (parent));
if (!otherpad) {
GST_DEBUG_OBJECT (parent,
"Pad %s:%s not linked, returning ANY", GST_DEBUG_PAD_NAME (pad));
- gst_object_unref (parent);
- return gst_caps_new_any ();
+ caps = gst_caps_new_any ();
+ } else {
+ GST_DEBUG_OBJECT (parent,
+ "Pad %s:%s is linked (to %s:%s), returning peer caps",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (otherpad));
+ /* if the peer has caps, use those. If the pad is not linked, this function
+ * returns NULL and we return ANY */
+ if (!(caps = gst_pad_peer_get_caps (otherpad)))
+ caps = gst_caps_new_any ();
+ gst_object_unref (otherpad);
}
- GST_DEBUG_OBJECT (parent,
- "Pad %s:%s is linked (to %s:%s), returning allowed-caps",
- GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (otherpad));
-
gst_object_unref (parent);
-
- caps = gst_pad_peer_get_caps (otherpad);
- if (caps == NULL) {
- caps = gst_caps_new_any ();
- }
return caps;
}
-static GstFlowReturn
-gst_switch_bufferalloc (GstPad * pad, guint64 offset,
- guint size, GstCaps * caps, GstBuffer ** buf)
+/* check if the pad is the active sinkpad */
+static gboolean
+gst_stream_selector_is_active_sinkpad (GstStreamSelector * sel, GstPad * pad)
{
- GstSwitch *gstswitch = GST_SWITCH (gst_pad_get_parent (pad));
- GstFlowReturn result;
- GstPad *active_sinkpad;
+ GstSelectorPad *selpad;
+ gboolean res;
- active_sinkpad = gstswitch->active_sinkpad;
+ selpad = GST_SELECTOR_PAD_CAST (pad);
- /* Fallback allocation for buffers from pads except the selected one */
- if (pad != active_sinkpad) {
- GST_DEBUG_OBJECT (gstswitch,
- "Pad %s:%s is not selected. Performing fallback allocation",
- GST_DEBUG_PAD_NAME (pad));
+ GST_OBJECT_LOCK (sel);
+ res = (pad == sel->active_sinkpad);
+ GST_OBJECT_UNLOCK (sel);
- *buf = NULL;
- result = GST_FLOW_OK;
- } else {
- result = gst_pad_alloc_buffer (gstswitch->srcpad, offset, size, caps, buf);
+ return res;
+}
- /* FIXME: HACK. If buffer alloc returns not-linked, perform a fallback
- * allocation. This should NOT be necessary, because playbin should
- * properly block the source pad from running until it's finished hooking
- * everything up, but playbin needs refactoring first. */
- if (result == GST_FLOW_NOT_LINKED) {
- GST_DEBUG_OBJECT (gstswitch,
- "No peer pad yet - performing fallback allocation for pad %s:%s",
- GST_DEBUG_PAD_NAME (pad));
+/* Get or create the active sinkpad */
+static GstPad *
+gst_stream_selector_activate_sinkpad (GstStreamSelector * sel, GstPad * pad)
+{
+ GstPad *active_sinkpad;
+ GstSelectorPad *selpad;
- *buf = NULL;
- result = GST_FLOW_OK;
- }
- }
+ selpad = GST_SELECTOR_PAD_CAST (pad);
- gst_object_unref (gstswitch);
+ GST_OBJECT_LOCK (sel);
+ selpad->active = TRUE;
+ active_sinkpad = sel->active_sinkpad;
+ if (active_sinkpad == NULL) {
+ /* first pad we get an alloc on becomes the activated pad by default */
+ active_sinkpad = sel->active_sinkpad = gst_object_ref (pad);
+ GST_DEBUG_OBJECT (sel, "Activating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
+ }
+ GST_OBJECT_UNLOCK (sel);
- return result;
+ return active_sinkpad;
}
static GList *
-gst_switch_get_linked_pads (GstPad * pad)
+gst_stream_selector_get_linked_pads (GstPad * pad)
{
- GstPad *otherpad = gst_switch_get_linked_pad (pad, TRUE);
+ GstPad *otherpad;
+ otherpad = gst_stream_selector_get_linked_pad (pad, TRUE);
if (!otherpad)
return NULL;
-
+ /* need to drop the ref, internal linked pads is not MT safe */
+ gst_object_unref (otherpad);
return g_list_append (NULL, otherpad);
}
-
-/* =========================================== */
-/* */
-/* Init & Class init */
-/* */
-/* =========================================== */
-
-static void
-gst_switch_dispose (GObject * object)
-{
- GstSwitch *gstswitch = NULL;
-
- gstswitch = GST_SWITCH (object);
-
- if (gstswitch->switch_mutex) {
- g_mutex_free (gstswitch->switch_mutex);
- }
- if (gstswitch->active_sinkpad) {
- gst_object_unref (gstswitch->active_sinkpad);
- gstswitch->active_sinkpad = NULL;
- }
- if (gstswitch->newsegment_events) {
- g_hash_table_destroy (gstswitch->newsegment_events);
- }
- if (gstswitch->stored_buffers) {
- g_hash_table_destroy (gstswitch->stored_buffers);
- }
- if (gstswitch->previous_sinkpad) {
- gst_object_unref (GST_OBJECT (gstswitch->previous_sinkpad));
- gstswitch->previous_sinkpad = NULL;
- }
- G_OBJECT_CLASS (parent_class)->dispose (object);
-}
-
-static void
-unref_buffer (GstBuffer * buf, gpointer user_data)
-{
- gst_buffer_unref (buf);
-}
-
-static void
-unref_buffers_and_destroy_list (GList * bufferlist)
-{
- g_list_foreach (bufferlist, (GFunc) unref_buffer, NULL);
- g_list_free (bufferlist);
-}
-
-static void
-gst_switch_init (GstSwitch * gstswitch)
-{
- gstswitch->srcpad = gst_pad_new ("src", GST_PAD_SRC);
- gst_pad_set_internal_link_function (gstswitch->srcpad,
- GST_DEBUG_FUNCPTR (gst_switch_get_linked_pads));
- gst_pad_set_getcaps_function (gstswitch->srcpad,
- GST_DEBUG_FUNCPTR (gst_switch_getcaps));
- gst_element_add_pad (GST_ELEMENT (gstswitch), gstswitch->srcpad);
-
- gstswitch->active_sinkpad = NULL;
- gstswitch->previous_sinkpad = NULL;
- gstswitch->nb_sinkpads = 0;
- gstswitch->newsegment_events = g_hash_table_new_full (g_direct_hash,
- g_direct_equal, NULL, (GDestroyNotify) gst_mini_object_unref);
- gstswitch->stored_buffers = g_hash_table_new_full (g_direct_hash,
- g_direct_equal, NULL, (GDestroyNotify) unref_buffers_and_destroy_list);
- gstswitch->need_to_send_newsegment = FALSE;
- gstswitch->queue_buffers = FALSE;
- gstswitch->stop_value = GST_CLOCK_TIME_NONE;
- gstswitch->start_value = GST_CLOCK_TIME_NONE;
- gstswitch->current_start = 0;
- gstswitch->last_ts = GST_CLOCK_TIME_NONE;
- gstswitch->switch_mutex = g_mutex_new ();
-}
-
-static void
-gst_switch_base_init (gpointer g_class)
+static GstPad *
+gst_stream_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * unused)
{
- GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+ GstStreamSelector *sel;
+ gchar *name = NULL;
+ GstPad *sinkpad = NULL;
- gst_element_class_set_details (element_class, &gst_switch_details);
+ sel = GST_STREAM_SELECTOR (element);
+ g_return_val_if_fail (templ->direction == GST_PAD_SINK, NULL);
+ GST_LOG_OBJECT (sel, "Creating new pad %d", sel->nb_sinkpads);
+ GST_OBJECT_LOCK (sel);
+ name = g_strdup_printf ("sink%d", sel->nb_sinkpads++);
+ sinkpad = g_object_new (GST_TYPE_SELECTOR_PAD,
+ "name", name, "direction", templ->direction, "template", templ, NULL);
+ g_free (name);
+ GST_OBJECT_UNLOCK (sel);
+
+ gst_pad_set_event_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_event));
+ gst_pad_set_getcaps_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_getcaps));
+ gst_pad_set_chain_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_chain));
+ gst_pad_set_internal_link_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_get_linked_pads));
+ gst_pad_set_bufferalloc_function (sinkpad,
+ GST_DEBUG_FUNCPTR (gst_selector_pad_bufferalloc));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_switch_sink_factory));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_switch_src_factory));
+ gst_pad_set_active (sinkpad, TRUE);
+ gst_element_add_pad (GST_ELEMENT (sel), sinkpad);
+ return sinkpad;
}
static void
-gst_switch_class_init (GstSwitchClass * klass)
+gst_stream_selector_release_pad (GstElement * element, GstPad * pad)
{
- GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
-
- gobject_class = (GObjectClass *) klass;
- gstelement_class = (GstElementClass *) klass;
-
- parent_class = g_type_class_peek_parent (klass);
- gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_switch_set_property);
- gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_switch_get_property);
-
- g_object_class_install_property (gobject_class,
- ARG_NB_SOURCES,
- g_param_spec_uint ("num-sources",
- "number of sources",
- "number of sources", 0, G_MAXUINT, 0, G_PARAM_READABLE));
- g_object_class_install_property (gobject_class,
- ARG_ACTIVE_SOURCE,
- g_param_spec_string ("active-pad",
- "Active Pad",
- "Name of the currently active sink pad", NULL, G_PARAM_READWRITE));
- g_object_class_install_property (gobject_class,
- ARG_START_VALUE,
- g_param_spec_uint64 ("start-value",
- "Start Value",
- "Timestamp that next segment will start at (-1 to use first buffer)",
- 0, G_MAXUINT64, GST_CLOCK_TIME_NONE, G_PARAM_READWRITE));
- g_object_class_install_property (gobject_class,
- ARG_STOP_VALUE,
- g_param_spec_uint64 ("stop-value",
- "Stop Value",
- "Timestamp that current source will stop at (-1 if unknown or don't care)",
- 0, G_MAXUINT64, GST_CLOCK_TIME_NONE, G_PARAM_READWRITE));
-
- g_object_class_install_property (gobject_class,
- ARG_LAST_TS,
- g_param_spec_uint64 ("last-timestamp",
- "Time at the end of the last buffer",
- "Time at the end of the last buffer", 0, G_MAXUINT, 0,
- G_PARAM_READABLE));
-
- g_object_class_install_property (gobject_class,
- ARG_QUEUE_BUFFERS,
- g_param_spec_boolean ("queue-buffers",
- "Queue new segment and buffers instead of sending them",
- "Queue new segment and buffers instead of sending them",
- FALSE, G_PARAM_READWRITE));
-
- gobject_class->dispose = gst_switch_dispose;
-
- gstelement_class->request_new_pad = gst_switch_request_new_pad;
- gstelement_class->release_pad = gst_switch_release_pad;
-}
-
-/* ============================================================= */
-/* */
-/* Public Methods */
-/* */
-/* ============================================================= */
-
-GType
-gst_switch_get_type (void)
-{
- static GType switch_type = 0;
-
- if (!switch_type) {
- static const GTypeInfo switch_info = {
- sizeof (GstSwitchClass),
- gst_switch_base_init,
- NULL,
- (GClassInitFunc) gst_switch_class_init,
- NULL,
- NULL,
- sizeof (GstSwitch),
- 0,
- (GInstanceInitFunc) gst_switch_init,
- };
+ GstStreamSelector *sel;
- switch_type = g_type_register_static (GST_TYPE_ELEMENT,
- "GstSwitch", &switch_info, 0);
+ sel = GST_STREAM_SELECTOR (element);
+ GST_LOG_OBJECT (sel, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
- GST_DEBUG_CATEGORY_INIT (switch_debug, "switch", 0, "the switch element");
+ GST_OBJECT_LOCK (sel);
+ /* if the pad was the active pad, makes us select a new one */
+ if (sel->active_sinkpad == pad) {
+ GST_DEBUG_OBJECT (sel, "Deactivating pad %s:%s", GST_DEBUG_PAD_NAME (pad));
+ sel->active_sinkpad = NULL;
}
+ GST_OBJECT_UNLOCK (sel);
- return switch_type;
+ gst_pad_set_active (pad, FALSE);
+ gst_element_remove_pad (GST_ELEMENT (sel), pad);
}
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_element_register (plugin, "switch", GST_RANK_NONE,
- GST_TYPE_SWITCH);
+ GST_TYPE_STREAM_SELECTOR);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
projects / platform / upstream / gstreamer.git / commitdiff