--- /dev/null
+/* 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>
+ * Copyright (C) 2007 Andy Wingo <wingo@pobox.com>
+ * Copyright (C) 2008 Nokia Corporation. (contact <stefan.kost@nokia.com>)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:element-input-selector
+ * @short_description: N-to-1 stream selectoring
+ * @see_also: #GstOutputSelector
+ *
+ * Direct one out of N input streams to the output pad.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstinputselector.h"
+#include "gstselector-marshal.h"
+
+GST_DEBUG_CATEGORY_STATIC (input_selector_debug);
+#define GST_CAT_DEFAULT input_selector_debug
+
+static const GstElementDetails gst_input_selector_details =
+GST_ELEMENT_DETAILS ("Input selector",
+ "Generic",
+ "N-to-1 input stream selectoring",
+ "Julien Moutte <julien@moutte.net>\n"
+ "Ronald S. Bultje <rbultje@ronald.bitfreak.net>\n"
+ "Jan Schmidt <thaytan@mad.scientist.com>\n"
+ "Wim Taymans <wim.taymans@gmail.com>");
+
+static GstStaticPadTemplate gst_input_selector_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("sink%d",
+ GST_PAD_SINK,
+ GST_PAD_REQUEST,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate gst_input_selector_src_factory =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+enum
+{
+ PROP_ACTIVE_PAD = 1
+};
+
+enum
+{
+ PAD_PROP_RUNNING_TIME = 1
+};
+
+enum
+{
+ /* methods */
+ SIGNAL_BLOCK,
+ SIGNAL_SWITCH,
+ LAST_SIGNAL
+};
+static guint gst_input_selector_signals[LAST_SIGNAL] = { 0 };
+
+static gboolean gst_input_selector_is_active_sinkpad (GstInputSelector * sel,
+ GstPad * pad);
+static GstPad *gst_input_selector_activate_sinkpad (GstInputSelector * sel,
+ GstPad * pad);
+static GstPad *gst_input_selector_get_linked_pad (GstPad * pad,
+ gboolean strict);
+static void gst_input_selector_push_pending_stop (GstInputSelector * self);
+
+#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;
+};
+
+struct _GstSelectorPadClass
+{
+ GstPadClass parent;
+};
+
+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);
+static void gst_selector_pad_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+
+static GstPadClass *selector_pad_parent_class = NULL;
+
+static gint64 gst_selector_pad_get_running_time (GstSelectorPad * 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);
+
+static GType
+gst_selector_pad_get_type (void)
+{
+ static GType selector_pad_type = 0;
+
+ 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, "GstSelectorPad",
+ &selector_pad_info, 0);
+ }
+ return selector_pad_type;
+}
+
+static void
+gst_selector_pad_class_init (GstSelectorPadClass * klass)
+{
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *) klass;
+
+ selector_pad_parent_class = g_type_class_peek_parent (klass);
+
+ gobject_class->get_property =
+ GST_DEBUG_FUNCPTR (gst_selector_pad_get_property);
+ g_object_class_install_property (gobject_class, PAD_PROP_RUNNING_TIME,
+ g_param_spec_int64 ("running-time", "Running time",
+ "Running time of stream on pad", 0, G_MAXINT64, 0, G_PARAM_READABLE));
+
+ gobject_class->finalize = gst_selector_pad_finalize;
+}
+
+static void
+gst_selector_pad_init (GstSelectorPad * pad)
+{
+ gst_selector_pad_reset (pad);
+}
+
+static void
+gst_selector_pad_finalize (GObject * object)
+{
+ GstSelectorPad *pad;
+
+ pad = GST_SELECTOR_PAD_CAST (object);
+
+ G_OBJECT_CLASS (selector_pad_parent_class)->finalize (object);
+}
+
+static void
+gst_selector_pad_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstSelectorPad *spad = GST_SELECTOR_PAD_CAST (object);
+
+ switch (prop_id) {
+ case PAD_PROP_RUNNING_TIME:
+ g_value_set_int64 (value, gst_selector_pad_get_running_time (spad));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static gint64
+gst_selector_pad_get_running_time (GstSelectorPad * pad)
+{
+ gint64 ret = 0;
+
+ GST_OBJECT_LOCK (pad);
+
+ if (pad->active) {
+ gint64 last_stop = pad->segment.last_stop;
+
+ if (last_stop >= 0)
+ ret = gst_segment_to_running_time (&pad->segment, GST_FORMAT_TIME,
+ last_stop);
+ }
+
+ GST_OBJECT_UNLOCK (pad);
+
+ GST_DEBUG_OBJECT (pad, "running time: %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (ret));
+
+ return ret;
+}
+
+static void
+gst_selector_pad_reset (GstSelectorPad * pad)
+{
+ pad->active = FALSE;
+ pad->eos = FALSE;
+ gst_segment_init (&pad->segment, GST_FORMAT_UNDEFINED);
+}
+
+/* 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_input_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);
+}
+
+static gboolean
+gst_selector_pad_event (GstPad * pad, GstEvent * event)
+{
+ gboolean res = TRUE;
+ gboolean forward = TRUE;
+ GstInputSelector *sel;
+ GstSelectorPad *selpad;
+
+ sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+
+ /* only forward if we are dealing with the active sinkpad */
+ forward = gst_input_selector_is_active_sinkpad (sel, pad);
+
+ 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);
+
+ gst_object_unref (sel);
+
+ return res;
+}
+
+static GstCaps *
+gst_selector_pad_getcaps (GstPad * pad)
+{
+ GstInputSelector *sel;
+ GstCaps *caps;
+
+ sel = GST_INPUT_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_selector_pad_bufferalloc (GstPad * pad, guint64 offset,
+ guint size, GstCaps * caps, GstBuffer ** buf)
+{
+ GstInputSelector *sel;
+ GstFlowReturn result;
+ GstPad *active_sinkpad;
+
+ sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
+
+ active_sinkpad = gst_input_selector_activate_sinkpad (sel, pad);
+
+ /* Fallback allocation for buffers from pads except the selected one */
+ if (pad != active_sinkpad) {
+ GST_DEBUG_OBJECT (sel,
+ "Pad %s:%s is not selected. Performing fallback allocation",
+ GST_DEBUG_PAD_NAME (pad));
+
+ *buf = NULL;
+ result = GST_FLOW_OK;
+ } else {
+ result = gst_pad_alloc_buffer (sel->srcpad, offset, size, caps, buf);
+
+ /* 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;
+ }
+ }
+
+ gst_object_unref (sel);
+
+ return result;
+}
+
+static gboolean
+gst_input_selector_wait (GstInputSelector * self, GstPad * pad)
+{
+ gboolean flushing;
+
+ GST_OBJECT_LOCK (self);
+
+ while (self->blocked)
+ g_cond_wait (self->blocked_cond, GST_OBJECT_GET_LOCK (self));
+
+ GST_OBJECT_UNLOCK (self);
+
+ GST_OBJECT_LOCK (pad);
+ flushing = GST_PAD_IS_FLUSHING (pad);
+ GST_OBJECT_UNLOCK (pad);
+
+ return flushing;
+}
+
+static GstFlowReturn
+gst_selector_pad_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstInputSelector *sel;
+ GstFlowReturn res;
+ GstPad *active_sinkpad;
+ GstSelectorPad *selpad;
+ GstClockTime end_time, duration;
+ GstSegment *seg;
+
+ sel = GST_INPUT_SELECTOR (gst_pad_get_parent (pad));
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+ seg = &selpad->segment;
+
+ if (gst_input_selector_wait (sel, pad))
+ goto ignore;
+
+ active_sinkpad = gst_input_selector_activate_sinkpad (sel, pad);
+
+ end_time = GST_BUFFER_TIMESTAMP (buf);
+ if (GST_CLOCK_TIME_IS_VALID (end_time)) {
+ duration = GST_BUFFER_DURATION (buf);
+ if (GST_CLOCK_TIME_IS_VALID (duration))
+ end_time += duration;
+ GST_DEBUG_OBJECT (sel, "received end time %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (end_time));
+ gst_segment_set_last_stop (seg, seg->format, end_time);
+ }
+
+ /* Ignore buffers from pads except the selected one */
+ if (pad != active_sinkpad)
+ goto ignore;
+
+ gst_input_selector_push_pending_stop (sel);
+
+ /* 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;
+ }
+
+ /* 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_OK;
+ goto done;
+ }
+}
+
+static void gst_input_selector_dispose (GObject * object);
+static void gst_input_selector_init (GstInputSelector * sel);
+static void gst_input_selector_base_init (GstInputSelectorClass * klass);
+static void gst_input_selector_class_init (GstInputSelectorClass * klass);
+static void gst_input_selector_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_input_selector_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+static GstPad *gst_input_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * unused);
+static void gst_input_selector_release_pad (GstElement * element, GstPad * pad);
+static GstStateChangeReturn gst_input_selector_change_state (GstElement *
+ element, GstStateChange transition);
+static GList *gst_input_selector_get_linked_pads (GstPad * pad);
+static GstCaps *gst_input_selector_getcaps (GstPad * pad);
+static gint64 gst_input_selector_block (GstInputSelector * self);
+static void gst_input_selector_switch (GstInputSelector * self,
+ const gchar * pad_name, gint64 stop_time, gint64 start_time);
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_input_selector_get_type (void)
+{
+ static GType input_selector_type = 0;
+
+ if (!input_selector_type) {
+ static const GTypeInfo input_selector_info = {
+ sizeof (GstInputSelectorClass),
+ (GBaseInitFunc) gst_input_selector_base_init,
+ NULL,
+ (GClassInitFunc) gst_input_selector_class_init,
+ NULL,
+ NULL,
+ sizeof (GstInputSelector),
+ 0,
+ (GInstanceInitFunc) gst_input_selector_init,
+ };
+ input_selector_type =
+ g_type_register_static (GST_TYPE_ELEMENT,
+ "GstInputSelector", &input_selector_info, 0);
+ GST_DEBUG_CATEGORY_INIT (input_selector_debug,
+ "input-selector", 0, "An input stream selector element");
+ }
+
+ return input_selector_type;
+}
+
+static void
+gst_input_selector_base_init (GstInputSelectorClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_set_details (element_class, &gst_input_selector_details);
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_input_selector_sink_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_input_selector_src_factory));
+}
+
+static void
+gst_input_selector_class_init (GstInputSelectorClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+ gobject_class->set_property =
+ GST_DEBUG_FUNCPTR (gst_input_selector_set_property);
+ gobject_class->get_property =
+ GST_DEBUG_FUNCPTR (gst_input_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_input_selector_dispose;
+ gstelement_class->request_new_pad = gst_input_selector_request_new_pad;
+ gstelement_class->release_pad = gst_input_selector_release_pad;
+ gstelement_class->change_state = gst_input_selector_change_state;
+
+ /**
+ * GstInputSelector::block:
+ * @inputselector: the #GstInputSelector
+ *
+ * Block all sink pads in preparation for a switch. Returns the stop time of
+ * the current switch segment, as a running time, or 0 if there is no current
+ * active pad or the current active pad never received data.
+ */
+ gst_input_selector_signals[SIGNAL_BLOCK] =
+ g_signal_new ("block", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstInputSelectorClass, block),
+ NULL, NULL, gst_selector_marshal_INT64__VOID, G_TYPE_INT64, 0);
+ /**
+ * GstInputSelector::switch:
+ * @inputselector: the #GstInputSelector
+ * @pad: name of pad to switch to
+ * @stop_time: running time at which to close the previous segment, or -1
+ * to use the running time of the previously active sink pad
+ * @start_time: running time at which to start the new segment, or -1 to
+ * use the running time of the newly active sink pad
+ *
+ * Switch to a new feed. The segment opened by the previously active pad, if
+ * any, will be closed, and a new segment opened before data flows again.
+ *
+ * This signal must be emitted when the element has been blocked via the <link
+ * linkend="GstInputSelector-block">block</link> signal.
+ *
+ * If you have a stream with only one switch element, such as an audio-only
+ * stream, a stream switch should be performed by first emitting the block
+ * signal, and then emitting the switch signal with -1 for the stop and start
+ * time values.
+ *
+ * The intention of the @stop_time and @start_time arguments is to allow
+ * multiple switch elements to switch and maintain stream synchronization.
+ * When switching a stream with multiple feeds, you will need as many switch
+ * elements as you have feeds. For example, a feed with audio and video will
+ * have one switch element between the audio feeds and one for video.
+ *
+ * A switch over multiple switch elements should be performed as follows:
+ * First, emit the <link linkend="GstInputSelector-block">block</link>
+ * signal, collecting the returned values. The maximum running time returned
+ * by block should then be used as the time at which to close the previous
+ * segment.
+ *
+ * Then, query the running times of the new audio and video pads that you will
+ * switch to. Naturally, these pads are on separate switch elements. Take the
+ * minimum running time for those streams and use it for the time at which to
+ * open the new segment.
+ *
+ * If @pad is the same as the current active pad, the element will cancel any
+ * previous block without adjusting segments.
+ */
+ gst_input_selector_signals[SIGNAL_SWITCH] =
+ g_signal_new ("switch", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstInputSelectorClass, switch_),
+ NULL, NULL, gst_selector_marshal_VOID__STRING_INT64_INT64,
+ G_TYPE_NONE, 3, G_TYPE_STRING, G_TYPE_INT64, G_TYPE_INT64);
+
+ klass->block = GST_DEBUG_FUNCPTR (gst_input_selector_block);
+ klass->switch_ = GST_DEBUG_FUNCPTR (gst_input_selector_switch);
+}
+
+static void
+gst_input_selector_init (GstInputSelector * sel)
+{
+ sel->srcpad = gst_pad_new ("src", GST_PAD_SRC);
+ gst_pad_set_internal_link_function (sel->srcpad,
+ GST_DEBUG_FUNCPTR (gst_input_selector_get_linked_pads));
+ gst_pad_set_getcaps_function (sel->srcpad,
+ GST_DEBUG_FUNCPTR (gst_input_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);
+
+ sel->blocked_cond = g_cond_new ();
+ sel->blocked = FALSE;
+}
+
+static void
+gst_input_selector_dispose (GObject * object)
+{
+ GstInputSelector *sel = GST_INPUT_SELECTOR (object);
+
+ if (sel->active_sinkpad) {
+ gst_object_unref (sel->active_sinkpad);
+ sel->active_sinkpad = NULL;
+ }
+
+ if (sel->blocked_cond) {
+ g_cond_free (sel->blocked_cond);
+ sel->blocked_cond = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+/* Solve the following equation for B.timestamp, and set that as the segment
+ * stop:
+ * B.running_time = (B.timestamp - NS.start) / NS.abs_rate + NS.accum
+ */
+static gint64
+gst_segment_get_timestamp (GstSegment * segment, gint64 running_time)
+{
+ return (running_time - segment->accum) * segment->abs_rate + segment->start;
+}
+
+static void
+gst_segment_set_stop (GstSegment * segment, gint64 running_time)
+{
+ segment->stop = gst_segment_get_timestamp (segment, running_time);
+ segment->last_stop = -1;
+}
+
+static void
+gst_segment_set_start (GstSegment * segment, gint64 running_time)
+{
+ segment->start = gst_segment_get_timestamp (segment, running_time);
+}
+
+static void
+gst_input_selector_set_active_pad (GstInputSelector * self,
+ const gchar * pad_name, gint64 stop_time, gint64 start_time)
+{
+ GstPad *pad;
+ GstSelectorPad *old, *new;
+ GstPad **active_pad_p;
+
+ if (strcmp (pad_name, "") != 0)
+ pad = gst_element_get_pad (GST_ELEMENT (self), pad_name);
+ else
+ pad = NULL;
+
+ GST_OBJECT_LOCK (self);
+
+ if (pad == self->active_sinkpad)
+ goto done;
+
+ old = GST_SELECTOR_PAD_CAST (self->active_sinkpad);
+ new = GST_SELECTOR_PAD_CAST (pad);
+
+ if (old && old->active && !self->pending_stop && stop_time >= 0) {
+ /* schedule a last_stop update if one isn't already scheduled, and a
+ segment has been pushed before. */
+ memcpy (&self->pending_stop_segment, &old->segment,
+ sizeof (self->pending_stop_segment));
+ gst_segment_set_stop (&self->pending_stop_segment, stop_time);
+ self->pending_stop = TRUE;
+ }
+
+ if (new && new->active && start_time >= 0) {
+ /* schedule a new segment push */
+ gst_segment_set_start (&new->segment, start_time);
+ new->segment_pending = TRUE;
+ }
+
+ active_pad_p = &self->active_sinkpad;
+ gst_object_replace ((GstObject **) active_pad_p, GST_OBJECT_CAST (pad));
+ GST_DEBUG_OBJECT (self, "New active pad is %" GST_PTR_FORMAT,
+ self->active_sinkpad);
+
+done:
+ GST_OBJECT_UNLOCK (self);
+
+ if (pad)
+ gst_object_unref (pad);
+}
+
+
+static void
+gst_input_selector_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstInputSelector *sel = GST_INPUT_SELECTOR (object);
+
+ switch (prop_id) {
+ case PROP_ACTIVE_PAD:
+ gst_input_selector_set_active_pad (sel,
+ g_value_get_string (value), GST_CLOCK_TIME_NONE, GST_CLOCK_TIME_NONE);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_input_selector_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstInputSelector *sel = GST_INPUT_SELECTOR (object);
+
+ switch (prop_id) {
+ 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_OBJECT_UNLOCK (object);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstPad *
+gst_input_selector_get_linked_pad (GstPad * pad, gboolean strict)
+{
+ GstInputSelector *sel;
+ GstPad *otherpad = NULL;
+
+ sel = GST_INPUT_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_input_selector_getcaps (GstPad * pad)
+{
+ GstPad *otherpad;
+ GstObject *parent;
+ GstCaps *caps;
+
+ otherpad = gst_input_selector_get_linked_pad (pad, FALSE);
+ parent = gst_object_get_parent (GST_OBJECT (pad));
+ if (!otherpad) {
+ GST_DEBUG_OBJECT (parent,
+ "Pad %s:%s not linked, returning ANY", GST_DEBUG_PAD_NAME (pad));
+ 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_object_unref (parent);
+ return caps;
+}
+
+/* check if the pad is the active sinkpad */
+static gboolean
+gst_input_selector_is_active_sinkpad (GstInputSelector * sel, GstPad * pad)
+{
+ GstSelectorPad *selpad;
+ gboolean res;
+
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+
+ GST_OBJECT_LOCK (sel);
+ res = (pad == sel->active_sinkpad);
+ GST_OBJECT_UNLOCK (sel);
+
+ return res;
+}
+
+/* Get or create the active sinkpad */
+static GstPad *
+gst_input_selector_activate_sinkpad (GstInputSelector * sel, GstPad * pad)
+{
+ GstPad *active_sinkpad;
+ GstSelectorPad *selpad;
+
+ selpad = GST_SELECTOR_PAD_CAST (pad);
+
+ 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 active_sinkpad;
+}
+
+static GList *
+gst_input_selector_get_linked_pads (GstPad * pad)
+{
+ GstPad *otherpad;
+
+ otherpad = gst_input_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);
+}
+
+static GstPad *
+gst_input_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * unused)
+{
+ GstInputSelector *sel;
+ gchar *name = NULL;
+ GstPad *sinkpad = NULL;
+
+ sel = GST_INPUT_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_pad_set_active (sinkpad, TRUE);
+ gst_element_add_pad (GST_ELEMENT (sel), sinkpad);
+ return sinkpad;
+}
+
+static void
+gst_input_selector_release_pad (GstElement * element, GstPad * pad)
+{
+ GstInputSelector *sel;
+
+ sel = GST_INPUT_SELECTOR (element);
+ GST_LOG_OBJECT (sel, "Releasing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
+
+ 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);
+
+ gst_pad_set_active (pad, FALSE);
+ gst_element_remove_pad (GST_ELEMENT (sel), pad);
+}
+
+static GstStateChangeReturn
+gst_input_selector_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstInputSelector *self = GST_INPUT_SELECTOR (element);
+ GstStateChangeReturn result;
+
+ result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ if (transition == GST_STATE_CHANGE_PAUSED_TO_READY) {
+ GST_OBJECT_LOCK (self);
+ self->blocked = FALSE;
+ g_cond_broadcast (self->blocked_cond);
+ GST_OBJECT_UNLOCK (self);
+ }
+
+ return result;
+}
+
+static gint64
+gst_input_selector_block (GstInputSelector * self)
+{
+ gint64 ret = 0;
+ GstSelectorPad *spad;
+
+ GST_OBJECT_LOCK (self);
+
+ if (self->blocked)
+ GST_WARNING_OBJECT (self, "switch already blocked");
+
+ self->blocked = TRUE;
+ spad = GST_SELECTOR_PAD_CAST (self->active_sinkpad);
+
+ if (self->active_sinkpad)
+ ret = gst_selector_pad_get_running_time (spad);
+ else
+ GST_DEBUG_OBJECT (self, "no active pad while blocking");
+
+ GST_OBJECT_UNLOCK (self);
+
+ return ret;
+}
+
+static void
+gst_input_selector_push_pending_stop (GstInputSelector * self)
+{
+ GstEvent *event = NULL;
+
+ GST_OBJECT_LOCK (self);
+
+ if (G_UNLIKELY (self->pending_stop)) {
+ GstSegment *seg = &self->pending_stop_segment;
+
+ event = gst_event_new_new_segment_full (TRUE, seg->rate,
+ seg->applied_rate, seg->format, seg->start, seg->stop, seg->stop);
+
+ self->pending_stop = FALSE;
+ }
+
+ GST_OBJECT_UNLOCK (self);
+
+ if (event)
+ gst_pad_push_event (self->srcpad, event);
+}
+
+/* stop_time and start_time are running times */
+static void
+gst_input_selector_switch (GstInputSelector * self, const gchar * pad_name,
+ gint64 stop_time, gint64 start_time)
+{
+ g_return_if_fail (self->blocked == TRUE);
+
+ gst_input_selector_set_active_pad (self, pad_name, stop_time, start_time);
+
+ GST_OBJECT_LOCK (self);
+ self->blocked = FALSE;
+ g_cond_broadcast (self->blocked_cond);
+ GST_OBJECT_UNLOCK (self);
+}
--- /dev/null
+/* GStreamer
+ * Copyright (C) 2008 Nokia Corporation. (contact <stefan.kost@nokia.com>)
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+/**
+ * SECTION:element-output-selector
+ * @short_description: 1-to-N stream selectoring
+ * @see_also: #GstTee, #GstInputSelector
+ *
+ * Direct input stream to one out of N output pads.
+ */
+
+/* FIXME: By default basesinks require some prerolled data before changing
+ to playing state. Also pipeline with output-selector connected to multiple
+ sink elements won't change to playing until all sink elements have received
+ the preroll data. Currently this can be worked around using live source element
+ and and exporting GST_COMPAT="no-live-preroll".
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstoutputselector.h"
+
+GST_DEBUG_CATEGORY_STATIC (output_selector_debug);
+#define GST_CAT_DEFAULT output_selector_debug
+
+static const GstElementDetails gst_output_selector_details =
+GST_ELEMENT_DETAILS ("Output selector",
+ "Generic",
+ "1-to-N output stream selectoring",
+ "Stefan Kost <stefan.kost@nokia.com>");
+
+static GstStaticPadTemplate gst_output_selector_sink_factory =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate gst_output_selector_src_factory =
+GST_STATIC_PAD_TEMPLATE ("src%d",
+ GST_PAD_SRC,
+ GST_PAD_REQUEST,
+ GST_STATIC_CAPS_ANY);
+
+enum
+{
+ PROP_ACTIVE_PAD = 1,
+ PROP_RESEND_LATEST
+};
+
+static void gst_output_selector_dispose (GObject * object);
+static void gst_output_selector_init (GstOutputSelector * sel);
+static void gst_output_selector_base_init (GstOutputSelectorClass * klass);
+static void gst_output_selector_class_init (GstOutputSelectorClass * klass);
+static void gst_output_selector_set_property (GObject * object,
+ guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_output_selector_get_property (GObject * object,
+ guint prop_id, GValue * value, GParamSpec * pspec);
+static GstPad *gst_output_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * unused);
+static void gst_output_selector_release_pad (GstElement * element,
+ GstPad * pad);
+static GstFlowReturn gst_output_selector_chain (GstPad * pad, GstBuffer * buf);
+static GstStateChangeReturn gst_output_selector_change_state (GstElement *
+ element, GstStateChange transition);
+static gboolean gst_output_selector_handle_sink_event (GstPad * pad,
+ GstEvent * event);
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_output_selector_get_type (void)
+{
+ static GType output_selector_type = 0;
+
+ if (!output_selector_type) {
+ static const GTypeInfo output_selector_info = {
+ sizeof (GstOutputSelectorClass),
+ (GBaseInitFunc) gst_output_selector_base_init,
+ NULL,
+ (GClassInitFunc) gst_output_selector_class_init,
+ NULL,
+ NULL,
+ sizeof (GstOutputSelector),
+ 0,
+ (GInstanceInitFunc) gst_output_selector_init,
+ };
+ output_selector_type =
+ g_type_register_static (GST_TYPE_ELEMENT,
+ "GstOutputSelector", &output_selector_info, 0);
+ GST_DEBUG_CATEGORY_INIT (output_selector_debug,
+ "output-selector", 0, "An output stream selector element");
+ }
+
+ return output_selector_type;
+}
+
+static void
+gst_output_selector_base_init (GstOutputSelectorClass * klass)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+ gst_element_class_set_details (element_class, &gst_output_selector_details);
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_output_selector_sink_factory));
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_output_selector_src_factory));
+}
+
+static void
+gst_output_selector_class_init (GstOutputSelectorClass * klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
+
+ parent_class = g_type_class_peek_parent (klass);
+ gobject_class->set_property =
+ GST_DEBUG_FUNCPTR (gst_output_selector_set_property);
+ gobject_class->get_property =
+ GST_DEBUG_FUNCPTR (gst_output_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 src pad", NULL, G_PARAM_READWRITE));
+ g_object_class_install_property (gobject_class, PROP_RESEND_LATEST,
+ g_param_spec_boolean ("resend-latest", "Resend latest buffer",
+ "Resend latest buffer after a switch to a new pad", FALSE,
+ G_PARAM_READWRITE));
+ gobject_class->dispose = gst_output_selector_dispose;
+ gstelement_class->request_new_pad =
+ GST_DEBUG_FUNCPTR (gst_output_selector_request_new_pad);
+ gstelement_class->release_pad =
+ GST_DEBUG_FUNCPTR (gst_output_selector_release_pad);
+ gstelement_class->change_state = gst_output_selector_change_state;
+
+}
+
+static void
+gst_output_selector_init (GstOutputSelector * sel)
+{
+ sel->sinkpad =
+ gst_pad_new_from_static_template (&gst_output_selector_sink_factory,
+ "sink");
+ gst_pad_set_chain_function (sel->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_output_selector_chain));
+ gst_pad_set_event_function (sel->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_output_selector_handle_sink_event));
+
+ gst_element_add_pad (GST_ELEMENT (sel), sel->sinkpad);
+
+ /*
+ gst_pad_set_bufferalloc_function (sel->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_output_selector_bufferalloc));
+ gst_pad_set_setcaps_function (sel->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_pad_proxy_setcaps));
+ gst_pad_set_getcaps_function (sel->sinkpad,
+ GST_DEBUG_FUNCPTR (gst_pad_proxy_getcaps));
+ */
+ /* srcpad management */
+ sel->active_srcpad = NULL;
+ sel->nb_srcpads = 0;
+ gst_segment_init (&sel->segment, GST_FORMAT_UNDEFINED);
+ sel->pending_srcpad = NULL;
+
+ sel->resend_latest = FALSE;
+ sel->latest_buffer = NULL;
+}
+
+static void
+gst_output_selector_dispose (GObject * object)
+{
+ GstOutputSelector *osel = GST_OUTPUT_SELECTOR (object);
+
+ if (osel->pending_srcpad != NULL) {
+ gst_object_unref (osel->pending_srcpad);
+ osel->pending_srcpad = NULL;
+ }
+ if (osel->latest_buffer != NULL) {
+ gst_buffer_unref (osel->latest_buffer);
+ osel->latest_buffer = NULL;
+ }
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+gst_output_selector_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstOutputSelector *sel = GST_OUTPUT_SELECTOR (object);
+
+ switch (prop_id) {
+ case PROP_ACTIVE_PAD:{
+ GstPad *next_pad =
+ gst_element_get_static_pad (GST_ELEMENT (sel),
+ g_value_get_string (value));
+ if (next_pad && (next_pad != sel->active_srcpad)) {
+ /* switch to new srcpad in next chain run */
+ if (sel->pending_srcpad != NULL) {
+ GST_INFO ("replacing pending switch");
+ gst_object_unref (sel->pending_srcpad);
+ }
+ sel->pending_srcpad = next_pad;
+ } else {
+ GST_WARNING ("setting active pad failed");
+ }
+ break;
+ }
+ case PROP_RESEND_LATEST:{
+ sel->resend_latest = g_value_get_boolean (value);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_output_selector_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstOutputSelector *sel = GST_OUTPUT_SELECTOR (object);
+
+ switch (prop_id) {
+ case PROP_ACTIVE_PAD:{
+ GST_OBJECT_LOCK (object);
+ if (sel->active_srcpad != NULL) {
+ g_value_take_string (value, gst_pad_get_name (sel->active_srcpad));
+ } else {
+ g_value_set_string (value, "");
+ }
+ GST_OBJECT_UNLOCK (object);
+ break;
+ }
+ case PROP_RESEND_LATEST:{
+ GST_OBJECT_LOCK (object);
+ g_value_set_boolean (value, sel->resend_latest);
+ GST_OBJECT_UNLOCK (object);
+ break;
+ }
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static GstPad *
+gst_output_selector_request_new_pad (GstElement * element,
+ GstPadTemplate * templ, const gchar * name)
+{
+ gchar *padname;
+ GstPad *srcpad;
+ GstOutputSelector *osel;
+
+ osel = GST_OUTPUT_SELECTOR (element);
+
+ GST_DEBUG_OBJECT (osel, "requesting pad");
+
+ GST_OBJECT_LOCK (osel);
+ padname = g_strdup_printf ("src%d", osel->nb_srcpads++);
+ srcpad = gst_pad_new_from_template (templ, padname);
+ GST_OBJECT_UNLOCK (osel);
+
+ gst_pad_set_active (srcpad, TRUE);
+ gst_element_add_pad (GST_ELEMENT (osel), srcpad);
+
+ /* Set the first requested src pad as active by default */
+ if (osel->active_srcpad == NULL) {
+ osel->active_srcpad = srcpad;
+ }
+ g_free (padname);
+
+ return srcpad;
+}
+
+static void
+gst_output_selector_release_pad (GstElement * element, GstPad * pad)
+{
+ GstOutputSelector *osel;
+
+ osel = GST_OUTPUT_SELECTOR (element);
+
+ GST_DEBUG_OBJECT (osel, "releasing pad");
+
+ gst_pad_set_active (pad, FALSE);
+
+ gst_element_remove_pad (GST_ELEMENT_CAST (osel), pad);
+}
+
+static gboolean
+gst_output_selector_switch (GstOutputSelector * osel)
+{
+ gboolean res = TRUE;
+ GstEvent *ev = NULL;
+ GstSegment *seg = NULL;
+ gint64 start = 0, position = 0;
+
+ GST_INFO ("switching to pad %" GST_PTR_FORMAT, osel->pending_srcpad);
+
+ if (gst_pad_is_linked (osel->pending_srcpad)) {
+ /* Send NEWSEGMENT to the pad we are going to switch to */
+ seg = &osel->segment;
+ /* If resending then mark newsegment start and position accordingly */
+ if (osel->resend_latest && osel->latest_buffer &&
+ GST_BUFFER_TIMESTAMP_IS_VALID (osel->latest_buffer)) {
+ start = position = GST_BUFFER_TIMESTAMP (osel->latest_buffer);
+ } else {
+ start = position = seg->last_stop;
+ }
+ ev = gst_event_new_new_segment (TRUE, seg->rate,
+ seg->format, start, seg->stop, position);
+ if (!gst_pad_push_event (osel->pending_srcpad, ev)) {
+ GST_WARNING ("newsegment handling failed in %" GST_PTR_FORMAT,
+ osel->pending_srcpad);
+ }
+
+ /* Resend latest buffer to newly switched pad */
+ if (osel->resend_latest && osel->latest_buffer) {
+ GST_INFO ("resending latest buffer");
+ gst_pad_push (osel->pending_srcpad, osel->latest_buffer);
+ osel->latest_buffer = NULL;
+ }
+
+ /* Switch */
+ osel->active_srcpad = osel->pending_srcpad;
+ } else {
+ GST_WARNING ("switch failed, pad not linked");
+ res = FALSE;
+ }
+
+ gst_object_unref (osel->pending_srcpad);
+ osel->pending_srcpad = NULL;
+
+ return res;
+}
+
+static GstFlowReturn
+gst_output_selector_chain (GstPad * pad, GstBuffer * buf)
+{
+ GstFlowReturn res;
+ GstOutputSelector *osel;
+ GstClockTime last_stop, duration;
+
+ osel = GST_OUTPUT_SELECTOR (gst_pad_get_parent (pad));
+
+ if (osel->pending_srcpad) {
+ /* Do the switch */
+ gst_output_selector_switch (osel);
+ }
+
+ /* Keep reference to latest buffer to resend it after switch */
+ if (osel->resend_latest) {
+ if (osel->latest_buffer)
+ gst_buffer_unref (osel->latest_buffer);
+ osel->latest_buffer = gst_buffer_ref (buf);
+ }
+
+ /* Keep track of last stop and use it in NEWSEGMENT start after
+ switching to a new src pad */
+ last_stop = GST_BUFFER_TIMESTAMP (buf);
+ if (GST_CLOCK_TIME_IS_VALID (last_stop)) {
+ duration = GST_BUFFER_DURATION (buf);
+ if (GST_CLOCK_TIME_IS_VALID (duration)) {
+ last_stop += duration;
+ }
+ GST_LOG ("setting last stop %" GST_TIME_FORMAT, GST_TIME_ARGS (last_stop));
+ gst_segment_set_last_stop (&osel->segment, osel->segment.format, last_stop);
+ }
+
+ GST_LOG ("pushing buffer to %" GST_PTR_FORMAT, osel->active_srcpad);
+ res = gst_pad_push (osel->active_srcpad, buf);
+ gst_object_unref (osel);
+
+ return res;
+}
+
+static GstStateChangeReturn
+gst_output_selector_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+}
+
+static gboolean
+gst_output_selector_handle_sink_event (GstPad * pad, GstEvent * event)
+{
+ gboolean res = TRUE;
+ GstOutputSelector *sel;
+
+ sel = GST_OUTPUT_SELECTOR (gst_pad_get_parent (pad));
+
+ switch (GST_EVENT_TYPE (event)) {
+ 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 ("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 (&sel->segment, update,
+ rate, arate, format, start, stop, time);
+
+ /* Send newsegment to all src pads */
+ gst_pad_event_default (pad, event);
+
+ break;
+ }
+ case GST_EVENT_EOS:
+ /* Send eos to all src pads */
+ gst_pad_event_default (pad, event);
+ break;
+ default:
+ /* Send other events to active src pad */
+ res = gst_pad_push_event (sel->active_srcpad, event);
+ break;
+ }
+
+ gst_object_unref (sel);
+
+ return res;
+}
projects / platform / upstream / gstreamer.git / commitdiff