--- /dev/null
+/* GStreamer
+ * Copyright (C) <2004> 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
+ * 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-decodebin
+ *
+ * #GstBin that auto-magically constructs a decoding pipeline using available
+ * decoders and demuxers via auto-plugging.
+ *
+ * When using decodebin in your application, connect a signal handler to
+ * #GstDecodeBin::new-decoded-pad and connect your sinks from within the
+ * callback function.
+ *
+ * <note>
+ * This element is deprecated and no longer supported. You should use the
+ * #uridecodebin or #decodebin2 element instead (or, even better: #playbin2).
+ * </note>
+ *
+ * Deprecated: use uridecodebin or decodebin2 instead.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst-i18n-plugin.h>
+
+#include <string.h>
+#include <gst/gst.h>
+#include <gst/pbutils/pbutils.h>
+
+#include "gstplay-marshal.h"
+
+/* generic templates */
+static GstStaticPadTemplate decoder_bin_sink_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+ GST_PAD_SINK,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticPadTemplate decoder_bin_src_template =
+GST_STATIC_PAD_TEMPLATE ("src%d",
+ GST_PAD_SRC,
+ GST_PAD_SOMETIMES,
+ GST_STATIC_CAPS_ANY);
+
+GST_DEBUG_CATEGORY_STATIC (gst_decode_bin_debug);
+#define GST_CAT_DEFAULT gst_decode_bin_debug
+
+#define GST_TYPE_DECODE_BIN (gst_decode_bin_get_type())
+#define GST_DECODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DECODE_BIN,GstDecodeBin))
+#define GST_DECODE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DECODE_BIN,GstDecodeBinClass))
+#define GST_IS_DECODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DECODE_BIN))
+#define GST_IS_DECODE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DECODE_BIN))
+
+typedef struct _GstDecodeBin GstDecodeBin;
+typedef struct _GstDecodeBinClass GstDecodeBinClass;
+
+/**
+ * GstDecodeBin:
+ *
+ * Auto-plugging decoder element structure
+ */
+struct _GstDecodeBin
+{
+ GstBin bin; /* we extend GstBin */
+
+ GstElement *typefind; /* this holds the typefind object */
+ GstElement *fakesink;
+
+ GList *dynamics; /* list of dynamic connections */
+
+ GList *queues; /* list of demuxer-decoder queues */
+
+ GList *probes; /* list of PadProbeData */
+
+ GList *factories; /* factories we can use for selecting elements */
+ gint numpads;
+ gint numwaiting;
+
+ gboolean have_type;
+ guint have_type_id; /* signal id for the typefind element */
+
+ gboolean shutting_down; /* stop pluggin if we're shutting down */
+
+ GType queue_type; /* store the GType of queues, to aid in recognising them */
+
+ GMutex *cb_mutex; /* Mutex for multi-threaded callbacks, such as removing the fakesink */
+};
+
+struct _GstDecodeBinClass
+{
+ GstBinClass parent_class;
+
+ /* signal we fire when a new pad has been decoded into raw audio/video */
+ void (*new_decoded_pad) (GstElement * element, GstPad * pad, gboolean last);
+ /* signal we fire when a pad has been removed */
+ void (*removed_decoded_pad) (GstElement * element, GstPad * pad);
+ /* signal fired when we found a pad that we cannot decode */
+ void (*unknown_type) (GstElement * element, GstPad * pad, GstCaps * caps);
+};
+
+/* signals */
+enum
+{
+ SIGNAL_NEW_DECODED_PAD,
+ SIGNAL_REMOVED_DECODED_PAD,
+ SIGNAL_UNKNOWN_TYPE,
+ SIGNAL_REDIRECT,
+ LAST_SIGNAL
+};
+
+/* Properties */
+enum
+{
+ PROP_0,
+ PROP_SINK_CAPS,
+};
+
+
+typedef struct
+{
+ GstPad *pad;
+ gulong sigid;
+ gboolean done;
+} PadProbeData;
+
+/* this structure is created for all dynamic pads that could get created
+ * at runtime */
+typedef struct
+{
+ GstDecodeBin *decode_bin; /* pointer to ourself */
+
+ GstElement *element; /* the element sending the signal */
+ gint np_sig_id; /* signal id of new_pad */
+ gint nmp_sig_id; /* signal id of no_more_pads */
+
+ GstPad *pad; /* the pad sending the signal */
+ gint caps_sig_id; /* signal id of caps */
+}
+GstDynamic;
+
+static void gst_decode_bin_class_init (GstDecodeBinClass * klass);
+static void gst_decode_bin_init (GstDecodeBin * decode_bin);
+static void gst_decode_bin_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_decode_bin_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static void gst_decode_bin_dispose (GObject * object);
+static void gst_decode_bin_finalize (GObject * object);
+
+static GstStateChangeReturn gst_decode_bin_change_state (GstElement * element,
+ GstStateChange transition);
+
+static gboolean add_fakesink (GstDecodeBin * decode_bin);
+static void remove_fakesink (GstDecodeBin * decode_bin);
+
+static void dynamic_free (GstDynamic * dyn);
+static void free_dynamics (GstDecodeBin * decode_bin);
+static void type_found (GstElement * typefind, guint probability,
+ GstCaps * caps, GstDecodeBin * decode_bin);
+static GstElement *try_to_link_1 (GstDecodeBin * decode_bin,
+ GstElement * origelement, GstPad * pad, GList * factories);
+static void close_link (GstElement * element, GstDecodeBin * decode_bin);
+static void close_pad_link (GstElement * element, GstPad * pad,
+ GstCaps * caps, GstDecodeBin * decode_bin, gboolean more);
+static void unlinked (GstPad * pad, GstPad * peerpad,
+ GstDecodeBin * decode_bin);
+static void new_pad (GstElement * element, GstPad * pad, GstDynamic * dynamic);
+static void no_more_pads (GstElement * element, GstDynamic * dynamic);
+static void new_caps (GstPad * pad, GParamSpec * unused, GstDynamic * dynamic);
+
+static void queue_filled_cb (GstElement * queue, GstDecodeBin * decode_bin);
+static void queue_underrun_cb (GstElement * queue, GstDecodeBin * decode_bin);
+
+static gboolean is_demuxer_element (GstElement * srcelement);
+
+static GstElementClass *parent_class;
+static guint gst_decode_bin_signals[LAST_SIGNAL] = { 0 };
+
+
+static GType
+gst_decode_bin_get_type (void)
+{
+ static GType gst_decode_bin_type = 0;
+
+ if (!gst_decode_bin_type) {
+ static const GTypeInfo gst_decode_bin_info = {
+ sizeof (GstDecodeBinClass),
+ NULL,
+ NULL,
+ (GClassInitFunc) gst_decode_bin_class_init,
+ NULL,
+ NULL,
+ sizeof (GstDecodeBin),
+ 0,
+ (GInstanceInitFunc) gst_decode_bin_init,
+ NULL
+ };
+
+ gst_decode_bin_type =
+ g_type_register_static (GST_TYPE_BIN, "GstDecodeBin",
+ &gst_decode_bin_info, 0);
+ }
+
+ return gst_decode_bin_type;
+}
+
+static void
+gst_decode_bin_class_init (GstDecodeBinClass * klass)
+{
+ GObjectClass *gobject_klass;
+ GstElementClass *gstelement_klass;
+
+ gobject_klass = (GObjectClass *) klass;
+ gstelement_klass = (GstElementClass *) klass;
+
+ parent_class = g_type_class_peek_parent (klass);
+
+ gobject_klass->set_property = gst_decode_bin_set_property;
+ gobject_klass->get_property = gst_decode_bin_get_property;
+ gobject_klass->dispose = gst_decode_bin_dispose;
+ gobject_klass->finalize = gst_decode_bin_finalize;
+
+ /**
+ * GstDecodeBin::new-decoded-pad:
+ * @bin: The decodebin
+ * @pad: The newly created pad
+ * @islast: #TRUE if this is the last pad to be added. Deprecated.
+ *
+ * This signal gets emitted as soon as a new pad of the same type as one of
+ * the valid 'raw' types is added.
+ */
+ gst_decode_bin_signals[SIGNAL_NEW_DECODED_PAD] =
+ g_signal_new ("new-decoded-pad", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstDecodeBinClass, new_decoded_pad), NULL, NULL,
+ gst_play_marshal_VOID__OBJECT_BOOLEAN, G_TYPE_NONE, 2, GST_TYPE_PAD,
+ G_TYPE_BOOLEAN);
+ /**
+ * GstDecodeBin::removed-decoded-pad:
+ * @bin: The decodebin
+ * @pad: The pad that was removed
+ *
+ * This signal is emitted when a 'final' caps pad has been removed.
+ */
+ gst_decode_bin_signals[SIGNAL_REMOVED_DECODED_PAD] =
+ g_signal_new ("removed-decoded-pad", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstDecodeBinClass, removed_decoded_pad), NULL, NULL,
+ gst_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GST_TYPE_PAD);
+ /**
+ * GstDecodeBin::unknown-type:
+ * @bin: The decodebin
+ * @pad: The new pad containing caps that cannot be resolved to a 'final'
+ * stream type.
+ * @caps: The #GstCaps of the pad that cannot be resolved.
+ *
+ * This signal is emitted when a pad for which there is no further possible
+ * decoding is added to the decodebin.
+ */
+ gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE] =
+ g_signal_new ("unknown-type", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass, unknown_type),
+ NULL, NULL, gst_marshal_VOID__OBJECT_BOXED, G_TYPE_NONE, 2,
+ GST_TYPE_PAD, GST_TYPE_CAPS);
+
+ g_object_class_install_property (gobject_klass, PROP_SINK_CAPS,
+ g_param_spec_boxed ("sink-caps", "Sink Caps",
+ "The caps of the input data. (NULL = use typefind element)",
+ GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ gst_element_class_add_pad_template (gstelement_klass,
+ gst_static_pad_template_get (&decoder_bin_sink_template));
+ gst_element_class_add_pad_template (gstelement_klass,
+ gst_static_pad_template_get (&decoder_bin_src_template));
+
+ gst_element_class_set_details_simple (gstelement_klass,
+ "Decoder Bin", "Generic/Bin/Decoder",
+ "Autoplug and decode to raw media",
+ "Wim Taymans <wim.taymans@gmail.com>");
+
+ gstelement_klass->change_state =
+ GST_DEBUG_FUNCPTR (gst_decode_bin_change_state);
+}
+
+/* check if the bin is dynamic.
+ *
+ * If there are no outstanding dynamic connections, the bin is
+ * considered to be non-dynamic.
+ */
+static gboolean
+gst_decode_bin_is_dynamic (GstDecodeBin * decode_bin)
+{
+ return decode_bin->dynamics != NULL;
+}
+
+/* the filter function for selecting the elements we can use in
+ * autoplugging */
+static gboolean
+gst_decode_bin_factory_filter (GstPluginFeature * feature,
+ GstDecodeBin * decode_bin)
+{
+ guint rank;
+ const gchar *klass;
+
+ /* we only care about element factories */
+ if (!GST_IS_ELEMENT_FACTORY (feature))
+ return FALSE;
+
+ klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
+ /* only demuxers, decoders and parsers can play */
+ if (strstr (klass, "Demux") == NULL &&
+ strstr (klass, "Decoder") == NULL && strstr (klass, "Parse") == NULL &&
+ strstr (klass, "Depayloader") == NULL) {
+ return FALSE;
+ }
+
+ /* only select elements with autoplugging rank */
+ rank = gst_plugin_feature_get_rank (feature);
+ if (rank < GST_RANK_MARGINAL)
+ return FALSE;
+
+ return TRUE;
+}
+
+/* function used to sort element features */
+static gint
+compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
+{
+ gint diff;
+ const gchar *rname1, *rname2;
+
+ diff = gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
+ if (diff != 0)
+ return diff;
+
+ rname1 = gst_plugin_feature_get_name (f1);
+ rname2 = gst_plugin_feature_get_name (f2);
+
+ diff = strcmp (rname2, rname1);
+
+ return diff;
+}
+
+static void
+print_feature (GstPluginFeature * feature)
+{
+ const gchar *rname;
+
+ rname = gst_plugin_feature_get_name (feature);
+
+ GST_DEBUG ("%s", rname);
+}
+
+static void
+gst_decode_bin_init (GstDecodeBin * decode_bin)
+{
+ GList *factories;
+
+ decode_bin->cb_mutex = g_mutex_new ();
+
+ /* first filter out the interesting element factories */
+ factories = gst_default_registry_feature_filter (
+ (GstPluginFeatureFilter) gst_decode_bin_factory_filter,
+ FALSE, decode_bin);
+
+ /* sort them according to their ranks */
+ decode_bin->factories = g_list_sort (factories, (GCompareFunc) compare_ranks);
+ /* do some debugging */
+ g_list_foreach (decode_bin->factories, (GFunc) print_feature, NULL);
+
+ /* we create the typefind element only once */
+ decode_bin->typefind = gst_element_factory_make ("typefind", "typefind");
+ if (!decode_bin->typefind) {
+ g_warning ("can't find typefind element, decodebin will not work");
+ } else {
+ GstPad *pad, *gpad;
+ GstPadTemplate *pad_tmpl;
+
+ /* add the typefind element */
+ if (!gst_bin_add (GST_BIN (decode_bin), decode_bin->typefind)) {
+ g_warning ("Could not add typefind element, decodebin will not work");
+ gst_object_unref (decode_bin->typefind);
+ decode_bin->typefind = NULL;
+ }
+
+ /* get the sinkpad */
+ pad = gst_element_get_static_pad (decode_bin->typefind, "sink");
+
+ /* get the pad template */
+ pad_tmpl = gst_static_pad_template_get (&decoder_bin_sink_template);
+
+ /* ghost the sink pad to ourself */
+ gpad = gst_ghost_pad_new_from_template ("sink", pad, pad_tmpl);
+ gst_pad_set_active (gpad, TRUE);
+ gst_element_add_pad (GST_ELEMENT (decode_bin), gpad);
+
+ gst_object_unref (pad_tmpl);
+ gst_object_unref (pad);
+
+ /* connect a signal to find out when the typefind element found
+ * a type */
+ decode_bin->have_type_id =
+ g_signal_connect (G_OBJECT (decode_bin->typefind), "have_type",
+ G_CALLBACK (type_found), decode_bin);
+ }
+ add_fakesink (decode_bin);
+
+ decode_bin->dynamics = NULL;
+ decode_bin->queues = NULL;
+ decode_bin->probes = NULL;
+}
+
+static void
+gst_decode_bin_dispose (GObject * object)
+{
+ GstDecodeBin *decode_bin;
+
+ decode_bin = GST_DECODE_BIN (object);
+
+ if (decode_bin->factories)
+ gst_plugin_feature_list_free (decode_bin->factories);
+ decode_bin->factories = NULL;
+
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+
+ /* our parent dispose might trigger new signals when pads are unlinked
+ * etc. clean up the mess here. */
+ /* FIXME do proper cleanup when going to NULL */
+ free_dynamics (decode_bin);
+}
+
+static void
+gst_decode_bin_set_sink_caps (GstDecodeBin * dbin, GstCaps * caps)
+{
+ GST_DEBUG_OBJECT (dbin, "Setting new caps: %" GST_PTR_FORMAT, caps);
+
+ g_object_set (dbin->typefind, "force-caps", caps, NULL);
+}
+
+static GstCaps *
+gst_decode_bin_get_sink_caps (GstDecodeBin * dbin)
+{
+ GstCaps *caps;
+
+ GST_DEBUG_OBJECT (dbin, "Getting currently set caps");
+
+ g_object_get (dbin->typefind, "force-caps", &caps, NULL);
+
+ return caps;
+}
+
+static void
+gst_decode_bin_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstDecodeBin *dbin;
+
+ dbin = GST_DECODE_BIN (object);
+
+ switch (prop_id) {
+ case PROP_SINK_CAPS:
+ gst_decode_bin_set_sink_caps (dbin, g_value_get_boxed (value));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_decode_bin_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstDecodeBin *dbin;
+
+ dbin = GST_DECODE_BIN (object);
+ switch (prop_id) {
+ case PROP_SINK_CAPS:
+ g_value_take_boxed (value, gst_decode_bin_get_sink_caps (dbin));
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_decode_bin_finalize (GObject * object)
+{
+ GstDecodeBin *decode_bin = GST_DECODE_BIN (object);
+
+ g_mutex_free (decode_bin->cb_mutex);
+
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+struct DynFind
+{
+ GstElement *elem;
+ GstPad *pad;
+};
+
+static gint
+find_dynamic (GstDynamic * dyn, struct DynFind *info)
+{
+ if (dyn->element == info->elem && dyn->pad == info->pad)
+ return 0;
+ return 1;
+}
+
+/* Add either an element (for dynamic pads/pad-added watching) or a
+ * pad (for delayed caps/notify::caps watching) to the dynamic list,
+ * taking care to ignore repeat entries so we don't end up handling a
+ * pad twice, for example */
+static void
+dynamic_add (GstElement * element, GstPad * pad, GstDecodeBin * decode_bin)
+{
+ GstDynamic *dyn;
+ struct DynFind find_info;
+ GList *found;
+
+ g_return_if_fail (element != NULL);
+
+ /* do a search that this entry doesn't already exist */
+ find_info.elem = element;
+ find_info.pad = pad;
+ found = g_list_find_custom (decode_bin->dynamics, &find_info,
+ (GCompareFunc) find_dynamic);
+ if (found != NULL)
+ goto exit;
+
+ /* take refs */
+ dyn = g_new0 (GstDynamic, 1);
+ dyn->element = gst_object_ref (element);
+ dyn->decode_bin = gst_object_ref (decode_bin);
+ if (pad) {
+ dyn->pad = gst_object_ref (pad);
+ GST_DEBUG_OBJECT (decode_bin, "dynamic create for pad %" GST_PTR_FORMAT,
+ pad);
+ dyn->caps_sig_id = g_signal_connect (G_OBJECT (pad), "notify::caps",
+ G_CALLBACK (new_caps), dyn);
+ } else {
+ GST_DEBUG_OBJECT (decode_bin, "dynamic create for element %"
+ GST_PTR_FORMAT, element);
+ dyn->np_sig_id = g_signal_connect (G_OBJECT (element), "pad-added",
+ G_CALLBACK (new_pad), dyn);
+ dyn->nmp_sig_id = g_signal_connect (G_OBJECT (element), "no-more-pads",
+ G_CALLBACK (no_more_pads), dyn);
+ }
+
+ /* and add this element to the dynamic elements */
+ decode_bin->dynamics = g_list_prepend (decode_bin->dynamics, dyn);
+
+ return;
+exit:
+ if (element) {
+ GST_DEBUG_OBJECT (decode_bin, "Dynamic element already added: %"
+ GST_PTR_FORMAT, element);
+ } else {
+ GST_DEBUG_OBJECT (decode_bin, "Dynamic pad already added: %"
+ GST_PTR_FORMAT, pad);
+ }
+}
+
+static void
+dynamic_free (GstDynamic * dyn)
+{
+ GST_DEBUG_OBJECT (dyn->decode_bin, "dynamic free");
+
+ /* disconnect signals */
+ if (dyn->np_sig_id)
+ g_signal_handler_disconnect (G_OBJECT (dyn->element), dyn->np_sig_id);
+ if (dyn->nmp_sig_id)
+ g_signal_handler_disconnect (G_OBJECT (dyn->element), dyn->nmp_sig_id);
+ if (dyn->caps_sig_id)
+ g_signal_handler_disconnect (G_OBJECT (dyn->pad), dyn->caps_sig_id);
+
+ if (dyn->pad)
+ gst_object_unref (dyn->pad);
+ dyn->pad = NULL;
+ if (dyn->element)
+ gst_object_unref (dyn->element);
+ dyn->element = NULL;
+
+ gst_object_unref (dyn->decode_bin);
+ dyn->decode_bin = NULL;
+
+ g_free (dyn);
+}
+
+static void
+free_dynamics (GstDecodeBin * decode_bin)
+{
+ GList *dyns;
+
+ for (dyns = decode_bin->dynamics; dyns; dyns = g_list_next (dyns)) {
+ GstDynamic *dynamic = (GstDynamic *) dyns->data;
+
+ dynamic_free (dynamic);
+ }
+ g_list_free (decode_bin->dynamics);
+ decode_bin->dynamics = NULL;
+}
+
+/* this function runs through the element factories and returns a list
+ * of all elements that are able to sink the given caps
+ */
+static GList *
+find_compatibles (GstDecodeBin * decode_bin, const GstCaps * caps)
+{
+ GList *factories;
+ GList *to_try = NULL;
+
+ /* loop over all the factories */
+ for (factories = decode_bin->factories; factories;
+ factories = g_list_next (factories)) {
+ GstElementFactory *factory = GST_ELEMENT_FACTORY (factories->data);
+ const GList *templates;
+ GList *walk;
+
+ /* get the templates from the element factory */
+ templates = gst_element_factory_get_static_pad_templates (factory);
+ for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
+ GstStaticPadTemplate *templ = walk->data;
+
+ /* we only care about the sink templates */
+ if (templ->direction == GST_PAD_SINK) {
+ gboolean can_intersect;
+ GstCaps *tmpl_caps;
+
+ /* try to intersect the caps with the caps of the template */
+ tmpl_caps = gst_static_caps_get (&templ->static_caps);
+
+ can_intersect = gst_caps_can_intersect (caps, tmpl_caps);
+ gst_caps_unref (tmpl_caps);
+
+ /* check if the intersection is empty */
+ if (can_intersect) {
+ /* non empty intersection, we can use this element */
+ to_try = g_list_prepend (to_try, factory);
+ break;
+ }
+ }
+ }
+ }
+ to_try = g_list_reverse (to_try);
+
+ return to_try;
+}
+
+static gboolean
+mimetype_is_raw (const gchar * mimetype)
+{
+ return g_str_has_prefix (mimetype, "video/x-raw") ||
+ g_str_has_prefix (mimetype, "audio/x-raw") ||
+ g_str_has_prefix (mimetype, "text/plain") ||
+ g_str_has_prefix (mimetype, "text/x-pango-markup");
+}
+
+static void
+free_pad_probes (GstDecodeBin * decode_bin)
+{
+ GList *tmp;
+
+ /* Remove pad probes */
+ for (tmp = decode_bin->probes; tmp; tmp = g_list_next (tmp)) {
+ PadProbeData *data = (PadProbeData *) tmp->data;
+
+ gst_pad_remove_data_probe (data->pad, data->sigid);
+ g_free (data);
+ }
+ g_list_free (decode_bin->probes);
+ decode_bin->probes = NULL;
+}
+
+/* used when we need to remove a probe because the decoder we plugged failed
+ * to activate */
+static void
+free_pad_probe_for_element (GstDecodeBin * decode_bin, GstElement * element)
+{
+ GList *l;
+
+ for (l = decode_bin->probes; l != NULL; l = g_list_next (l)) {
+ PadProbeData *data = (PadProbeData *) l->data;
+
+ if (GST_ELEMENT_CAST (GST_PAD_PARENT (data->pad)) == element) {
+ gst_pad_remove_data_probe (data->pad, data->sigid);
+ decode_bin->probes = g_list_delete_link (decode_bin->probes, l);
+ g_free (data);
+ return;
+ }
+ }
+}
+
+static gboolean
+add_fakesink (GstDecodeBin * decode_bin)
+{
+ if (decode_bin->fakesink != NULL)
+ return TRUE;
+
+ g_mutex_lock (decode_bin->cb_mutex);
+
+ decode_bin->fakesink = gst_element_factory_make ("fakesink", "fakesink");
+ if (!decode_bin->fakesink)
+ goto no_fakesink;
+
+ /* hacky, remove sink flag, we don't want our decodebin to become a sink
+ * just because we add a fakesink element to make us ASYNC */
+ GST_OBJECT_FLAG_UNSET (decode_bin->fakesink, GST_ELEMENT_IS_SINK);
+
+ /* takes ownership */
+ if (!gst_bin_add (GST_BIN (decode_bin), decode_bin->fakesink)) {
+ g_warning ("Could not add fakesink element, decodebin will not work");
+ gst_object_unref (decode_bin->fakesink);
+ decode_bin->fakesink = NULL;
+ }
+ g_mutex_unlock (decode_bin->cb_mutex);
+ return TRUE;
+
+ /* ERRORS */
+no_fakesink:
+ {
+ g_warning ("can't find fakesink element, decodebin will not work");
+ g_mutex_unlock (decode_bin->cb_mutex);
+ return FALSE;
+ }
+}
+
+static void
+remove_fakesink (GstDecodeBin * decode_bin)
+{
+ gboolean removed_fakesink = FALSE;
+
+ if (decode_bin->fakesink == NULL)
+ return;
+
+ g_mutex_lock (decode_bin->cb_mutex);
+ if (decode_bin->fakesink) {
+ GST_DEBUG_OBJECT (decode_bin, "Removing fakesink and marking state dirty");
+
+ /* Lock the state to prevent it from changing state to non-NULL
+ * before it's removed */
+ gst_element_set_locked_state (decode_bin->fakesink, TRUE);
+ /* setting the state to NULL is never async */
+ gst_element_set_state (decode_bin->fakesink, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (decode_bin), decode_bin->fakesink);
+ decode_bin->fakesink = NULL;
+
+ removed_fakesink = TRUE;
+ }
+ g_mutex_unlock (decode_bin->cb_mutex);
+
+ if (removed_fakesink) {
+ free_pad_probes (decode_bin);
+ }
+}
+
+/* this should be implemented with _pad_block() */
+static gboolean
+pad_probe (GstPad * pad, GstMiniObject * data, GstDecodeBin * decode_bin)
+{
+ GList *tmp;
+ gboolean alldone = TRUE;
+
+ for (tmp = decode_bin->probes; tmp; tmp = g_list_next (tmp)) {
+ PadProbeData *pdata = (PadProbeData *) tmp->data;
+
+ if (pdata->pad == pad) {
+ if (GST_IS_BUFFER (data)) {
+ if (!pdata->done)
+ decode_bin->numwaiting--;
+ pdata->done = TRUE;
+ } else if (GST_IS_EVENT (data) &&
+ ((GST_EVENT_TYPE (data) == GST_EVENT_EOS) ||
+ (GST_EVENT_TYPE (data) == GST_EVENT_TAG) ||
+ (GST_EVENT_TYPE (data) == GST_EVENT_FLUSH_START))) {
+ /* FIXME, what about NEWSEGMENT? really, use _pad_block()... */
+ if (!pdata->done)
+ decode_bin->numwaiting--;
+ pdata->done = TRUE;
+ }
+ }
+
+ if (!(pdata->done)) {
+ GST_LOG_OBJECT (decode_bin, "Pad probe on pad %" GST_PTR_FORMAT
+ " but pad %" GST_PTR_FORMAT " still needs data.", pad, pdata->pad);
+ alldone = FALSE;
+ }
+ }
+ if (alldone)
+ remove_fakesink (decode_bin);
+ return TRUE;
+}
+
+/* FIXME: this should be somehow merged with the queue code in
+ * try_to_link_1() to reduce code duplication */
+static GstPad *
+add_raw_queue (GstDecodeBin * decode_bin, GstPad * pad)
+{
+ GstElement *queue = NULL;
+ GstPad *queuesinkpad = NULL, *queuesrcpad = NULL;
+
+ queue = gst_element_factory_make ("queue", NULL);
+ decode_bin->queue_type = G_OBJECT_TYPE (queue);
+
+ g_object_set (G_OBJECT (queue), "max-size-buffers", 0, NULL);
+ g_object_set (G_OBJECT (queue), "max-size-time", G_GINT64_CONSTANT (0), NULL);
+ g_object_set (G_OBJECT (queue), "max-size-bytes", 8192, NULL);
+ gst_bin_add (GST_BIN (decode_bin), queue);
+ gst_element_set_state (queue, GST_STATE_READY);
+ queuesinkpad = gst_element_get_static_pad (queue, "sink");
+ queuesrcpad = gst_element_get_static_pad (queue, "src");
+
+ if (gst_pad_link (pad, queuesinkpad) != GST_PAD_LINK_OK) {
+ GST_WARNING_OBJECT (decode_bin,
+ "Linking queue failed, trying without queue");
+ gst_element_set_state (queue, GST_STATE_NULL);
+ gst_object_unref (queuesrcpad);
+ gst_object_unref (queuesinkpad);
+ gst_bin_remove (GST_BIN (decode_bin), queue);
+ return gst_object_ref (pad);
+ }
+
+ decode_bin->queues = g_list_append (decode_bin->queues, queue);
+ g_signal_connect (G_OBJECT (queue),
+ "overrun", G_CALLBACK (queue_filled_cb), decode_bin);
+ g_signal_connect (G_OBJECT (queue),
+ "underrun", G_CALLBACK (queue_underrun_cb), decode_bin);
+
+ gst_element_set_state (queue, GST_STATE_PAUSED);
+ gst_object_unref (queuesinkpad);
+
+ return queuesrcpad;
+}
+
+/* given a pad and a caps from an element, find the list of elements
+ * that could connect to the pad
+ *
+ * If the pad has a raw format, this function will create a ghostpad
+ * for the pad onto the decodebin.
+ *
+ * If no compatible elements could be found, this function will signal
+ * the unknown_type signal.
+ */
+static void
+close_pad_link (GstElement * element, GstPad * pad, GstCaps * caps,
+ GstDecodeBin * decode_bin, gboolean more)
+{
+ GstStructure *structure;
+ const gchar *mimetype;
+ gchar *padname;
+ gint diff;
+
+ padname = gst_pad_get_name (pad);
+ diff = strncmp (padname, "current_", 8);
+ g_free (padname);
+
+ /* hack.. ignore current pads */
+ if (!diff)
+ return;
+
+ /* the caps is empty, this means the pad has no type, we can only
+ * decide to fire the unknown_type signal. */
+ if (caps == NULL || gst_caps_is_empty (caps))
+ goto unknown_type;
+
+ /* the caps is any, this means the pad can be anything and
+ * we don't know yet */
+ if (gst_caps_is_any (caps))
+ goto dont_know_yet;
+
+ GST_LOG_OBJECT (element, "trying to close %" GST_PTR_FORMAT, caps);
+
+ /* FIXME, iterate over more structures? I guess it is possible that
+ * this pad has some encoded and some raw pads. This code will fail
+ * then if the first structure is not the raw type... */
+ structure = gst_caps_get_structure (caps, 0);
+ mimetype = gst_structure_get_name (structure);
+
+ /* first see if this is raw. If the type is raw, we can
+ * create a ghostpad for this pad. It's possible that the caps are not
+ * fixed. */
+ if (mimetype_is_raw (mimetype)) {
+ GstPadTemplate *tmpl;
+ gchar *padname;
+ GstPad *ghost;
+ PadProbeData *data;
+
+ /* If we're at a demuxer element but have raw data already
+ * we have to add a queue here. For non-raw data this is done
+ * in try_to_link_1() */
+ if (is_demuxer_element (element)) {
+ GST_DEBUG_OBJECT (decode_bin,
+ "Element %s is a demuxer, inserting a queue",
+ GST_OBJECT_NAME (element));
+
+ pad = add_raw_queue (decode_bin, pad);
+ }
+
+ /* make a unique name for this new pad */
+ padname = g_strdup_printf ("src%d", decode_bin->numpads);
+ decode_bin->numpads++;
+
+ /* make it a ghostpad */
+ tmpl = gst_static_pad_template_get (&decoder_bin_src_template);
+ ghost = gst_ghost_pad_new_from_template (padname, pad, tmpl);
+ gst_object_unref (tmpl);
+
+ gst_pad_set_active (ghost, TRUE);
+ gst_element_add_pad (GST_ELEMENT (decode_bin), ghost);
+
+ data = g_new0 (PadProbeData, 1);
+ data->pad = pad;
+ data->done = FALSE;
+
+ /* FIXME, use _pad_block() */
+ data->sigid = gst_pad_add_data_probe (pad, G_CALLBACK (pad_probe),
+ decode_bin);
+ decode_bin->numwaiting++;
+
+ decode_bin->probes = g_list_append (decode_bin->probes, data);
+
+ GST_LOG_OBJECT (element, "closed pad %s", padname);
+
+ /* our own signal with an extra flag that this is the only pad */
+ GST_DEBUG_OBJECT (decode_bin, "emitting new-decoded-pad");
+ g_signal_emit (G_OBJECT (decode_bin),
+ gst_decode_bin_signals[SIGNAL_NEW_DECODED_PAD], 0, ghost, !more);
+ GST_DEBUG_OBJECT (decode_bin, "emitted new-decoded-pad");
+
+ g_free (padname);
+
+ /* If we're at a demuxer element pad was set to a queue's
+ * srcpad and must be unref'd here */
+ if (is_demuxer_element (element))
+ gst_object_unref (pad);
+ } else {
+ GList *to_try;
+
+ /* if the caps has many types, we need to delay */
+ if (!gst_caps_is_fixed (caps))
+ goto many_types;
+
+ /* continue plugging, first find all compatible elements */
+ to_try = find_compatibles (decode_bin, caps);
+ if (to_try == NULL)
+ /* no compatible elements, we cannot go on */
+ goto unknown_type;
+
+ if (try_to_link_1 (decode_bin, element, pad, to_try) == NULL) {
+ g_list_free (to_try);
+ GST_LOG_OBJECT (pad, "none of the allegedly available elements usable");
+ goto unknown_type;
+ }
+
+ /* can free the list again now */
+ g_list_free (to_try);
+ }
+ return;
+
+ /* ERRORS */
+unknown_type:
+ {
+ GST_LOG_OBJECT (pad, "unknown type found, fire signal");
+ g_signal_emit (G_OBJECT (decode_bin),
+ gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, pad, caps);
+
+ gst_element_post_message (GST_ELEMENT_CAST (decode_bin),
+ gst_missing_decoder_message_new (GST_ELEMENT_CAST (decode_bin), caps));
+
+ if (element == decode_bin->typefind) {
+ gchar *desc;
+
+ desc = gst_pb_utils_get_decoder_description (caps);
+ GST_ELEMENT_ERROR (decode_bin, STREAM, CODEC_NOT_FOUND,
+ (_("A %s plugin is required to play this stream, but not installed."),
+ desc),
+ ("No decoder to handle media type '%s'",
+ gst_structure_get_name (gst_caps_get_structure (caps, 0))));
+ g_free (desc);
+ }
+
+ return;
+ }
+dont_know_yet:
+ {
+ GST_LOG_OBJECT (pad, "type is not known yet");
+ goto setup_caps_delay;
+ }
+many_types:
+ {
+ GST_LOG_OBJECT (pad, "many possible types");
+ goto setup_caps_delay;
+ }
+setup_caps_delay:
+ {
+ GST_LOG_OBJECT (pad, "setting up a delayed link");
+ dynamic_add (element, pad, decode_bin);
+ return;
+ }
+}
+
+/* Decide whether an element is a demuxer based on the
+ * klass and number/type of src pad templates it has */
+static gboolean
+is_demuxer_element (GstElement * srcelement)
+{
+ GstElementFactory *srcfactory;
+ GstElementClass *elemclass;
+ GList *walk;
+ const gchar *klass;
+ gint potential_src_pads = 0;
+
+ srcfactory = gst_element_get_factory (srcelement);
+ klass = gst_element_factory_get_klass (srcfactory);
+
+ /* Can't be a demuxer unless it has Demux in the klass name */
+ if (klass == NULL || !strstr (klass, "Demux"))
+ return FALSE;
+
+ /* Walk the src pad templates and count how many the element
+ * might produce */
+ elemclass = GST_ELEMENT_GET_CLASS (srcelement);
+
+ walk = gst_element_class_get_pad_template_list (elemclass);
+ while (walk != NULL) {
+ GstPadTemplate *templ;
+
+ templ = (GstPadTemplate *) walk->data;
+ if (GST_PAD_TEMPLATE_DIRECTION (templ) == GST_PAD_SRC) {
+ switch (GST_PAD_TEMPLATE_PRESENCE (templ)) {
+ case GST_PAD_ALWAYS:
+ case GST_PAD_SOMETIMES:
+ if (strstr (GST_PAD_TEMPLATE_NAME_TEMPLATE (templ), "%"))
+ potential_src_pads += 2; /* Might make multiple pads */
+ else
+ potential_src_pads += 1;
+ break;
+ case GST_PAD_REQUEST:
+ potential_src_pads += 2;
+ break;
+ }
+ }
+ walk = g_list_next (walk);
+ }
+
+ if (potential_src_pads < 2)
+ return FALSE;
+
+ return TRUE;
+}
+
+/*
+ * given a list of element factories, try to link one of the factories
+ * to the given pad.
+ *
+ * The function returns the element that was successfully linked to the
+ * pad.
+ */
+static GstElement *
+try_to_link_1 (GstDecodeBin * decode_bin, GstElement * srcelement, GstPad * pad,
+ GList * factories)
+{
+ GList *walk;
+ GstElement *result = NULL;
+ gboolean isdemux = FALSE;
+ GstPad *queuesinkpad = NULL, *queuesrcpad = NULL;
+ GstElement *queue = NULL;
+ GstPad *usedsrcpad = pad;
+
+ /* Check if the parent of the src pad is a demuxer */
+ isdemux = is_demuxer_element (srcelement);
+
+ if (isdemux && factories != NULL) {
+ GstPadLinkReturn dqlink;
+
+ /* Insert a queue between demuxer and decoder */
+ GST_DEBUG_OBJECT (decode_bin,
+ "Element %s is a demuxer, inserting a queue",
+ GST_OBJECT_NAME (srcelement));
+ queue = gst_element_factory_make ("queue", NULL);
+ decode_bin->queue_type = G_OBJECT_TYPE (queue);
+
+ g_object_set (G_OBJECT (queue), "max-size-buffers", 0, NULL);
+ g_object_set (G_OBJECT (queue), "max-size-time", G_GINT64_CONSTANT (0),
+ NULL);
+ g_object_set (G_OBJECT (queue), "max-size-bytes", 8192, NULL);
+ gst_bin_add (GST_BIN (decode_bin), queue);
+ gst_element_set_state (queue, GST_STATE_READY);
+ queuesinkpad = gst_element_get_static_pad (queue, "sink");
+ usedsrcpad = queuesrcpad = gst_element_get_static_pad (queue, "src");
+
+ dqlink = gst_pad_link (pad, queuesinkpad);
+ g_return_val_if_fail (dqlink == GST_PAD_LINK_OK, NULL);
+ }
+
+ /* loop over the factories */
+ for (walk = factories; walk; walk = g_list_next (walk)) {
+ GstElementFactory *factory = GST_ELEMENT_FACTORY (walk->data);
+ GstElement *element;
+ GstPadLinkReturn ret;
+ GstPad *sinkpad;
+
+ GST_DEBUG_OBJECT (decode_bin, "trying to link %s",
+ gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
+
+ /* make an element from the factory first */
+ if ((element = gst_element_factory_create (factory, NULL)) == NULL) {
+ /* hmm, strange. Like with all things in life, let's move on.. */
+ GST_WARNING_OBJECT (decode_bin, "could not create an element from %s",
+ gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
+ continue;
+ }
+
+ /* try to link the given pad to a sinkpad */
+ /* FIXME, find the sinkpad by looping over the pads instead of
+ * looking it up by name */
+ if ((sinkpad = gst_element_get_static_pad (element, "sink")) == NULL) {
+ /* if no pad is found we can't do anything */
+ GST_WARNING_OBJECT (decode_bin, "could not find sinkpad in element");
+ continue;
+ }
+
+ /* now add the element to the bin first */
+ GST_DEBUG_OBJECT (decode_bin, "adding %s", GST_OBJECT_NAME (element));
+ gst_bin_add (GST_BIN (decode_bin), element);
+
+ /* set to READY first so it is ready, duh. */
+ if (gst_element_set_state (element,
+ GST_STATE_READY) == GST_STATE_CHANGE_FAILURE) {
+ GST_WARNING_OBJECT (decode_bin, "Couldn't set %s to READY",
+ GST_ELEMENT_NAME (element));
+ /* get rid of the sinkpad */
+ gst_object_unref (sinkpad);
+ /* this element did not work, remove it again and continue trying
+ * other elements, the element will be disposed. */
+ /* FIXME: shouldn't we do this before adding it to the bin so that no
+ * error messages get through to the app? (tpm) */
+ gst_bin_remove (GST_BIN (decode_bin), element);
+ continue;
+ }
+
+ if ((ret = gst_pad_link (usedsrcpad, sinkpad)) != GST_PAD_LINK_OK) {
+ GST_DEBUG_OBJECT (decode_bin, "link failed on pad %s:%s, reason %d",
+ GST_DEBUG_PAD_NAME (pad), ret);
+ /* get rid of the sinkpad */
+ gst_object_unref (sinkpad);
+ /* this element did not work, remove it again and continue trying
+ * other elements, the element will be disposed. */
+ gst_element_set_state (element, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (decode_bin), element);
+ } else {
+ GST_DEBUG_OBJECT (decode_bin, "linked on pad %s:%s",
+ GST_DEBUG_PAD_NAME (usedsrcpad));
+
+ /* configure the queue some more */
+ if (queue != NULL) {
+ decode_bin->queues = g_list_append (decode_bin->queues, queue);
+ g_signal_connect (G_OBJECT (queue),
+ "overrun", G_CALLBACK (queue_filled_cb), decode_bin);
+ g_signal_connect (G_OBJECT (queue),
+ "underrun", G_CALLBACK (queue_underrun_cb), decode_bin);
+ }
+
+ /* The link worked, now figure out what it was that we connected */
+
+ /* make sure we catch unlink signals */
+ g_signal_connect (G_OBJECT (pad), "unlinked",
+ G_CALLBACK (unlinked), decode_bin);
+
+ /* now that we added the element we can try to continue autoplugging
+ * on it until we have a raw type */
+ close_link (element, decode_bin);
+
+ /* change the state of the element to that of the parent */
+ if ((gst_element_set_state (element,
+ GST_STATE_PAUSED)) == GST_STATE_CHANGE_FAILURE) {
+ GST_WARNING_OBJECT (decode_bin, "Couldn't set %s to PAUSED",
+ GST_ELEMENT_NAME (element));
+ /* close_link -> close_pad_link -> might have set up a pad probe */
+ free_pad_probe_for_element (decode_bin, element);
+ gst_element_set_state (element, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (decode_bin), element);
+ continue;
+ }
+
+ result = element;
+
+ /* get rid of the sinkpad now */
+ gst_object_unref (sinkpad);
+
+ /* Set the queue to paused and set the pointer to NULL so we don't
+ * remove it below */
+ if (queue != NULL) {
+ gst_element_set_state (queue, GST_STATE_PAUSED);
+ queue = NULL;
+ gst_object_unref (queuesrcpad);
+ gst_object_unref (queuesinkpad);
+ }
+
+ /* and exit */
+ goto done;
+ }
+ }
+done:
+ if (queue != NULL) {
+ /* We didn't successfully connect to the queue */
+ gst_pad_unlink (pad, queuesinkpad);
+ gst_element_set_state (queue, GST_STATE_NULL);
+ gst_object_unref (queuesrcpad);
+ gst_object_unref (queuesinkpad);
+ gst_bin_remove (GST_BIN (decode_bin), queue);
+ }
+ return result;
+}
+
+static GstPad *
+get_our_ghost_pad (GstDecodeBin * decode_bin, GstPad * pad)
+{
+ GstIterator *pad_it = NULL;
+ GstPad *db_pad = NULL;
+ gboolean done = FALSE;
+
+ if (pad == NULL || !GST_PAD_IS_SRC (pad)) {
+ GST_DEBUG_OBJECT (decode_bin, "pad NULL or not SRC pad");
+ return NULL;
+ }
+
+ /* our ghostpads are the sourcepads */
+ pad_it = gst_element_iterate_src_pads (GST_ELEMENT (decode_bin));
+ while (!done) {
+ db_pad = NULL;
+ switch (gst_iterator_next (pad_it, (gpointer) & db_pad)) {
+ case GST_ITERATOR_OK:
+ GST_DEBUG_OBJECT (decode_bin, "looking at pad %s:%s",
+ GST_DEBUG_PAD_NAME (db_pad));
+ if (GST_IS_GHOST_PAD (db_pad)) {
+ GstPad *target_pad = NULL;
+
+ target_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (db_pad));
+ done = (target_pad == pad);
+ if (target_pad)
+ gst_object_unref (target_pad);
+
+ if (done) {
+ /* Found our ghost pad */
+ GST_DEBUG_OBJECT (decode_bin, "found ghostpad %s:%s for pad %s:%s",
+ GST_DEBUG_PAD_NAME (db_pad), GST_DEBUG_PAD_NAME (pad));
+ break;
+ }
+ }
+ /* Not the right one */
+ gst_object_unref (db_pad);
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (pad_it);
+ break;
+ case GST_ITERATOR_ERROR:
+ done = TRUE;
+ break;
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ }
+ }
+ gst_iterator_free (pad_it);
+
+ return db_pad;
+}
+
+/* remove all downstream elements starting from the given pad.
+ * Also make sure to remove the ghostpad we created for the raw
+ * decoded stream.
+ */
+static void
+remove_element_chain (GstDecodeBin * decode_bin, GstPad * pad)
+{
+ GstIterator *iter;
+ gboolean done = FALSE;
+ gpointer item;
+ GstElement *elem = GST_ELEMENT (GST_OBJECT_PARENT (pad));
+
+ while (GST_OBJECT_PARENT (elem) &&
+ GST_OBJECT_PARENT (elem) != GST_OBJECT (decode_bin))
+ elem = GST_ELEMENT (GST_OBJECT_PARENT (elem));
+
+ if (G_OBJECT_TYPE (elem) == decode_bin->queue_type) {
+ GST_DEBUG_OBJECT (decode_bin,
+ "Encountered demuxer output queue while removing element chain");
+ decode_bin->queues = g_list_remove (decode_bin->queues, elem);
+ }
+
+ GST_DEBUG_OBJECT (decode_bin, "%s:%s", GST_DEBUG_PAD_NAME (pad));
+ iter = gst_pad_iterate_internal_links (pad);
+ if (!iter)
+ goto no_iter;
+
+ /* remove all elements linked to this pad up to the ghostpad
+ * that we created for this stream */
+ while (!done) {
+ switch (gst_iterator_next (iter, &item)) {
+ case GST_ITERATOR_OK:{
+ GstPad *pad;
+ GstPad *ghostpad;
+ GstPad *peer;
+
+ pad = GST_PAD (item);
+ GST_DEBUG_OBJECT (decode_bin, "inspecting internal pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+
+ ghostpad = get_our_ghost_pad (decode_bin, pad);
+ if (ghostpad) {
+ GST_DEBUG_OBJECT (decode_bin, "found our ghost pad %s:%s for %s:%s",
+ GST_DEBUG_PAD_NAME (ghostpad), GST_DEBUG_PAD_NAME (pad));
+
+ g_signal_emit (G_OBJECT (decode_bin),
+ gst_decode_bin_signals[SIGNAL_REMOVED_DECODED_PAD], 0, ghostpad);
+
+ gst_element_remove_pad (GST_ELEMENT (decode_bin), ghostpad);
+ gst_object_unref (ghostpad);
+ continue;
+ } else {
+ GST_DEBUG_OBJECT (decode_bin, "not one of our ghostpads");
+ }
+
+ peer = gst_pad_get_peer (pad);
+ if (peer) {
+ GstObject *parent = gst_pad_get_parent (peer);
+
+ GST_DEBUG_OBJECT (decode_bin,
+ "internal pad %s:%s linked to pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad), GST_DEBUG_PAD_NAME (peer));
+
+ if (parent) {
+ GstObject *grandparent = gst_object_get_parent (parent);
+
+ if (grandparent != NULL) {
+ if (GST_ELEMENT (grandparent) != GST_ELEMENT (decode_bin)) {
+ GST_DEBUG_OBJECT (decode_bin, "dead end pad %s:%s parent %s",
+ GST_DEBUG_PAD_NAME (peer), GST_OBJECT_NAME (grandparent));
+ } else {
+ GST_DEBUG_OBJECT (decode_bin,
+ "recursing element %s on pad %s:%s",
+ GST_ELEMENT_NAME (elem), GST_DEBUG_PAD_NAME (pad));
+ remove_element_chain (decode_bin, peer);
+ }
+ gst_object_unref (grandparent);
+ }
+ gst_object_unref (parent);
+ }
+ gst_object_unref (peer);
+ }
+ gst_object_unref (item);
+ }
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (iter);
+ break;
+ case GST_ITERATOR_ERROR:
+ GST_ERROR_OBJECT (pad, "Could not iterate over internally linked pads");
+ done = TRUE;
+ break;
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ }
+ }
+ GST_DEBUG_OBJECT (decode_bin, "removing %s", GST_ELEMENT_NAME (elem));
+
+ gst_iterator_free (iter);
+
+no_iter:
+ gst_element_set_state (elem, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (decode_bin), elem);
+}
+
+/* there are @bytes bytes in @queue, enlarge it
+ *
+ * Returns: new max number of bytes in @queue
+ */
+static guint
+queue_enlarge (GstElement * queue, guint bytes, GstDecodeBin * decode_bin)
+{
+ /* Increase the queue size by 1Mbyte if it is over 1Mb, else double its current limit
+ */
+ if (bytes > 1024 * 1024)
+ bytes += 1024 * 1024;
+ else
+ bytes *= 2;
+
+ GST_DEBUG_OBJECT (decode_bin,
+ "increasing queue %s max-size-bytes to %d", GST_ELEMENT_NAME (queue),
+ bytes);
+ g_object_set (G_OBJECT (queue), "max-size-bytes", bytes, NULL);
+
+ return bytes;
+}
+
+/* this callback is called when our queues fills up or are empty
+ * We then check the status of all other queues to make sure we
+ * never have an empty and full queue at the same time since that
+ * would block dataflow. In the case of a filled queue, we make
+ * it larger.
+ */
+static void
+queue_underrun_cb (GstElement * queue, GstDecodeBin * decode_bin)
+{
+ /* FIXME: we don't really do anything here for now. Ideally we should
+ * see if some of the queues are filled and increase their values
+ * in that case.
+ * Note: be very carefull with thread safety here as this underrun
+ * signal is done from the streaming thread of queue srcpad which
+ * is different from the pad_added (where we add the queue to the
+ * list) and the overrun signals that are signalled from the
+ * demuxer thread.
+ */
+ GST_DEBUG_OBJECT (decode_bin, "got underrun");
+}
+
+/* Make sure we don't have a full queue and empty queue situation */
+static void
+queue_filled_cb (GstElement * queue, GstDecodeBin * decode_bin)
+{
+ GList *tmp;
+ gboolean increase = FALSE;
+ guint bytes;
+
+ /* get current byte level from the queue that is filled */
+ g_object_get (G_OBJECT (queue), "current-level-bytes", &bytes, NULL);
+ GST_DEBUG_OBJECT (decode_bin, "One of the queues is full at %d bytes", bytes);
+
+ /* we do not buffer more than 20Mb */
+ if (bytes > (20 * 1024 * 1024))
+ goto too_large;
+
+ /* check all other queue to see if one is empty, in that case
+ * we need to enlarge @queue */
+ for (tmp = decode_bin->queues; tmp; tmp = g_list_next (tmp)) {
+ GstElement *aqueue = GST_ELEMENT (tmp->data);
+ guint levelbytes = 0;
+
+ if (aqueue != queue) {
+ g_object_get (G_OBJECT (aqueue), "current-level-bytes", &levelbytes,
+ NULL);
+ if (levelbytes == 0) {
+ /* yup, found an empty queue, we can stop the search and
+ * need to enlarge the queue */
+ increase = TRUE;
+ break;
+ }
+ }
+ }
+
+ if (increase) {
+ /* enlarge @queue */
+ queue_enlarge (queue, bytes, decode_bin);
+ } else {
+ GST_DEBUG_OBJECT (decode_bin,
+ "Queue is full but other queues are not empty, not doing anything");
+ }
+ return;
+
+ /* errors */
+too_large:
+ {
+ GST_WARNING_OBJECT (decode_bin,
+ "Queue is bigger than 20Mbytes, something else is going wrong");
+ return;
+ }
+}
+
+/* This function will be called when a dynamic pad is created on an element.
+ * We try to continue autoplugging on this new pad. */
+static void
+new_pad (GstElement * element, GstPad * pad, GstDynamic * dynamic)
+{
+ GstDecodeBin *decode_bin = dynamic->decode_bin;
+ GstCaps *caps;
+ gboolean more;
+
+ GST_OBJECT_LOCK (decode_bin);
+ if (decode_bin->shutting_down)
+ goto shutting_down1;
+ GST_OBJECT_UNLOCK (decode_bin);
+
+ GST_STATE_LOCK (decode_bin);
+ if (decode_bin->shutting_down)
+ goto shutting_down2;
+
+ /* see if any more pending dynamic connections exist */
+ more = gst_decode_bin_is_dynamic (decode_bin);
+
+ caps = gst_pad_get_caps (pad);
+ close_pad_link (element, pad, caps, decode_bin, more);
+ if (caps)
+ gst_caps_unref (caps);
+ GST_STATE_UNLOCK (decode_bin);
+
+ return;
+
+shutting_down1:
+ {
+ GST_DEBUG_OBJECT (decode_bin, "we are shutting down");
+ GST_OBJECT_UNLOCK (decode_bin);
+ return;
+ }
+shutting_down2:
+ {
+ GST_DEBUG_OBJECT (decode_bin, "we are shutting down");
+ GST_STATE_UNLOCK (decode_bin);
+ return;
+ }
+}
+
+static void
+dynamic_remove (GstDynamic * dynamic)
+{
+ GstDecodeBin *decode_bin = dynamic->decode_bin;
+
+ /* remove the dynamic from the list of dynamics */
+ decode_bin->dynamics = g_list_remove (decode_bin->dynamics, dynamic);
+ dynamic_free (dynamic);
+
+ /* if we have no more dynamic elements, we have no chance of creating
+ * more pads, so we fire the no_more_pads signal */
+ if (decode_bin->dynamics == NULL) {
+ if (decode_bin->numwaiting == 0) {
+ GST_DEBUG_OBJECT (decode_bin,
+ "no more dynamic elements, removing fakesink");
+ remove_fakesink (decode_bin);
+ }
+ GST_DEBUG_OBJECT (decode_bin,
+ "no more dynamic elements, signaling no_more_pads");
+ gst_element_no_more_pads (GST_ELEMENT (decode_bin));
+ } else {
+ GST_DEBUG_OBJECT (decode_bin, "we have more dynamic elements");
+ }
+}
+
+/* this signal is fired when an element signals the no_more_pads signal.
+ * This means that the element will not generate more dynamic pads and
+ * we can remove the element from the list of dynamic elements. When we
+ * have no more dynamic elements in the pipeline, we can fire a no_more_pads
+ * signal ourselves. */
+static void
+no_more_pads (GstElement * element, GstDynamic * dynamic)
+{
+ GST_DEBUG_OBJECT (dynamic->decode_bin, "no more pads on element %s",
+ GST_ELEMENT_NAME (element));
+
+ dynamic_remove (dynamic);
+}
+
+static void
+new_caps (GstPad * pad, GParamSpec * unused, GstDynamic * dynamic)
+{
+ GST_DEBUG_OBJECT (dynamic->decode_bin, "delayed link triggered");
+
+ new_pad (dynamic->element, pad, dynamic);
+
+ /* assume it worked and remove the dynamic */
+ dynamic_remove (dynamic);
+
+ return;
+}
+
+static gboolean
+is_our_kid (GstElement * e, GstDecodeBin * decode_bin)
+{
+ gboolean ret;
+ GstElement *parent;
+
+ parent = (GstElement *) gst_object_get_parent ((GstObject *) e);
+ ret = (parent == (GstElement *) decode_bin);
+
+ if (parent)
+ gst_object_unref ((GstObject *) parent);
+
+ return ret;
+}
+
+static gboolean
+elem_is_dynamic (GstElement * element, GstDecodeBin * decode_bin)
+{
+ GList *pads;
+
+ /* loop over all the padtemplates */
+ for (pads = GST_ELEMENT_GET_CLASS (element)->padtemplates; pads;
+ pads = g_list_next (pads)) {
+ GstPadTemplate *templ = GST_PAD_TEMPLATE (pads->data);
+ const gchar *templ_name;
+
+ /* we are only interested in source pads */
+ if (GST_PAD_TEMPLATE_DIRECTION (templ) != GST_PAD_SRC)
+ continue;
+
+ templ_name = GST_PAD_TEMPLATE_NAME_TEMPLATE (templ);
+ GST_DEBUG_OBJECT (decode_bin, "got a source pad template %s", templ_name);
+
+ /* figure out what kind of pad this is */
+ switch (GST_PAD_TEMPLATE_PRESENCE (templ)) {
+ case GST_PAD_SOMETIMES:
+ {
+ /* try to get the pad to see if it is already created or
+ * not */
+ GstPad *pad = gst_element_get_static_pad (element, templ_name);
+
+ if (pad) {
+ GST_DEBUG_OBJECT (decode_bin, "got the pad for sometimes template %s",
+ templ_name);
+ gst_object_unref (pad);
+ } else {
+ GST_DEBUG_OBJECT (decode_bin,
+ "did not get the sometimes pad of template %s", templ_name);
+ /* we have an element that will create dynamic pads */
+ return TRUE;
+ }
+ break;
+ }
+ default:
+ /* Don't care about ALWAYS or REQUEST pads */
+ break;
+ }
+ }
+ return FALSE;
+}
+
+/* This function will be called when a pad is disconnected for some reason */
+static void
+unlinked (GstPad * pad, GstPad * peerpad, GstDecodeBin * decode_bin)
+{
+ GstElement *element, *peer;
+
+ /* inactivate pad */
+ gst_pad_set_active (pad, GST_ACTIVATE_NONE);
+
+ peer = gst_pad_get_parent_element (peerpad);
+
+ if (!is_our_kid (peer, decode_bin))
+ goto exit;
+
+ GST_DEBUG_OBJECT (decode_bin, "pad %s:%s removal while alive - chained?",
+ GST_DEBUG_PAD_NAME (pad));
+
+ /* remove all elements linked to the peerpad */
+ remove_element_chain (decode_bin, peerpad);
+
+ /* Re-add as a dynamic element if needed, via close_link */
+ element = gst_pad_get_parent_element (pad);
+ if (element) {
+ if (elem_is_dynamic (element, decode_bin))
+ dynamic_add (element, NULL, decode_bin);
+
+ gst_object_unref (element);
+ }
+
+exit:
+ gst_object_unref (peer);
+}
+
+/* this function inspects the given element and tries to connect something
+ * on the srcpads. If there are dynamic pads, it sets up a signal handler to
+ * continue autoplugging when they become available */
+static void
+close_link (GstElement * element, GstDecodeBin * decode_bin)
+{
+ GList *pads;
+ gboolean dynamic = FALSE;
+ GList *to_connect = NULL;
+ gboolean more;
+
+ GST_DEBUG_OBJECT (decode_bin, "closing links with element %s",
+ GST_ELEMENT_NAME (element));
+
+ /* loop over all the padtemplates */
+ for (pads = GST_ELEMENT_GET_CLASS (element)->padtemplates; pads;
+ pads = g_list_next (pads)) {
+ GstPadTemplate *templ = GST_PAD_TEMPLATE (pads->data);
+ const gchar *templ_name;
+
+ /* we are only interested in source pads */
+ if (GST_PAD_TEMPLATE_DIRECTION (templ) != GST_PAD_SRC)
+ continue;
+
+ templ_name = GST_PAD_TEMPLATE_NAME_TEMPLATE (templ);
+ GST_DEBUG_OBJECT (decode_bin, "got a source pad template %s", templ_name);
+
+ /* figure out what kind of pad this is */
+ switch (GST_PAD_TEMPLATE_PRESENCE (templ)) {
+ case GST_PAD_ALWAYS:
+ {
+ /* get the pad that we need to autoplug */
+ GstPad *pad = gst_element_get_static_pad (element, templ_name);
+
+ if (pad) {
+ GST_DEBUG_OBJECT (decode_bin, "got the pad for always template %s",
+ templ_name);
+ /* here is the pad, we need to autoplug it */
+ to_connect = g_list_prepend (to_connect, pad);
+ } else {
+ /* strange, pad is marked as always but it's not
+ * there. Fix the element */
+ GST_WARNING_OBJECT (decode_bin,
+ "could not get the pad for always template %s", templ_name);
+ }
+ break;
+ }
+ case GST_PAD_SOMETIMES:
+ {
+ /* try to get the pad to see if it is already created or
+ * not */
+ GstPad *pad = gst_element_get_static_pad (element, templ_name);
+
+ if (pad) {
+ GST_DEBUG_OBJECT (decode_bin, "got the pad for sometimes template %s",
+ templ_name);
+ /* the pad is created, we need to autoplug it */
+ to_connect = g_list_prepend (to_connect, pad);
+ } else {
+ GST_DEBUG_OBJECT (decode_bin,
+ "did not get the sometimes pad of template %s", templ_name);
+ /* we have an element that will create dynamic pads */
+ dynamic = TRUE;
+ }
+ break;
+ }
+ case GST_PAD_REQUEST:
+ /* ignore request pads */
+ GST_DEBUG_OBJECT (decode_bin, "ignoring request padtemplate %s",
+ templ_name);
+ break;
+ }
+ }
+ if (dynamic) {
+ GST_DEBUG_OBJECT (decode_bin, "got a dynamic element here");
+ /* ok, this element has dynamic pads, set up the signal handlers to be
+ * notified of them */
+
+ dynamic_add (element, NULL, decode_bin);
+ }
+
+ /* Check if this is an element with more than 1 pad. If this element
+ * has more than 1 pad, we need to be carefull not to signal the
+ * no_more_pads signal after connecting the first pad. */
+ more = g_list_length (to_connect) > 1;
+
+ /* now loop over all the pads we need to connect */
+ for (pads = to_connect; pads; pads = g_list_next (pads)) {
+ GstPad *pad = GST_PAD_CAST (pads->data);
+ GstCaps *caps;
+
+ /* we have more pads if we have more than 1 pad to connect or
+ * dynamics. If we have only 1 pad and no dynamics, more will be
+ * set to FALSE and the no-more-pads signal will be fired. Note
+ * that this can change after the close_pad_link call. */
+ more |= gst_decode_bin_is_dynamic (decode_bin);
+
+ GST_DEBUG_OBJECT (decode_bin, "closing pad link for %s",
+ GST_OBJECT_NAME (pad));
+
+ /* continue autoplugging on the pads */
+ caps = gst_pad_get_caps (pad);
+ close_pad_link (element, pad, caps, decode_bin, more);
+ if (caps)
+ gst_caps_unref (caps);
+
+ gst_object_unref (pad);
+ }
+ g_list_free (to_connect);
+}
+
+/* this is the signal handler for the typefind element have_type signal.
+ * It tries to continue autoplugging on the typefind src pad */
+static void
+type_found (GstElement * typefind, guint probability, GstCaps * caps,
+ GstDecodeBin * decode_bin)
+{
+ gboolean dynamic;
+ GstPad *pad;
+
+ GST_DEBUG_OBJECT (decode_bin, "typefind found caps %" GST_PTR_FORMAT, caps);
+
+ GST_OBJECT_LOCK (decode_bin);
+ if (decode_bin->shutting_down)
+ goto shutting_down;
+ GST_OBJECT_UNLOCK (decode_bin);
+
+ GST_STATE_LOCK (decode_bin);
+ if (decode_bin->shutting_down)
+ goto exit;
+
+ /* don't need the typefind anymore if we already found a type, we're not going
+ * to be able to do anything with it anyway except for generating errors */
+ if (decode_bin->have_type)
+ goto exit;
+
+ decode_bin->have_type = TRUE;
+
+ /* special-case text/plain: we only want to accept it as a raw type if it
+ * comes from a subtitle parser element or a demuxer, but not if it is the
+ * type of the entire stream, in which case we just want to error out */
+ if (typefind == decode_bin->typefind &&
+ gst_structure_has_name (gst_caps_get_structure (caps, 0), "text/plain")) {
+ gst_element_no_more_pads (GST_ELEMENT (decode_bin));
+ /* we can't handle this type of stream */
+ GST_ELEMENT_ERROR (decode_bin, STREAM, WRONG_TYPE,
+ (_("This appears to be a text file")),
+ ("decodebin cannot decode plain text files"));
+ goto exit;
+ }
+
+ /* autoplug the new pad with the caps that the signal gave us. */
+ pad = gst_element_get_static_pad (typefind, "src");
+ close_pad_link (typefind, pad, caps, decode_bin, FALSE);
+ gst_object_unref (pad);
+
+ dynamic = gst_decode_bin_is_dynamic (decode_bin);
+ if (dynamic == FALSE) {
+ GST_DEBUG_OBJECT (decode_bin, "we have no dynamic elements anymore");
+ /* if we have no dynamic elements, we know that no new pads
+ * will be created and we can signal out no_more_pads signal */
+ gst_element_no_more_pads (GST_ELEMENT (decode_bin));
+ } else {
+ /* more dynamic elements exist that could create new pads */
+ GST_DEBUG_OBJECT (decode_bin, "we have more dynamic elements");
+ }
+
+exit:
+ GST_STATE_UNLOCK (decode_bin);
+ return;
+
+shutting_down:
+ {
+ GST_DEBUG_OBJECT (decode_bin, "we are shutting down");
+ GST_OBJECT_UNLOCK (decode_bin);
+ return;
+ }
+}
+
+static void
+disconnect_unlinked_signals (GstDecodeBin * decode_bin, GstElement * element)
+{
+ GstIterator *pad_it = NULL;
+ gboolean done = FALSE;
+
+ pad_it = gst_element_iterate_src_pads (element);
+ while (!done) {
+ GstPad *pad = NULL;
+
+ switch (gst_iterator_next (pad_it, (gpointer) & pad)) {
+ case GST_ITERATOR_OK:
+ g_signal_handlers_disconnect_by_func (pad, (gpointer) unlinked,
+ decode_bin);
+ gst_object_unref (pad);
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (pad_it);
+ break;
+ default:
+ done = TRUE;
+ break;
+ }
+ }
+ gst_iterator_free (pad_it);
+}
+
+
+static void
+cleanup_decodebin (GstDecodeBin * decode_bin)
+{
+ GstIterator *elem_it = NULL, *gpad_it = NULL;
+ GstPad *typefind_pad = NULL;
+ gboolean done = FALSE;
+
+ g_return_if_fail (GST_IS_DECODE_BIN (decode_bin));
+
+ GST_DEBUG_OBJECT (decode_bin, "cleaning up decodebin");
+
+ typefind_pad = gst_element_get_static_pad (decode_bin->typefind, "src");
+ if (GST_IS_PAD (typefind_pad)) {
+ g_signal_handlers_block_by_func (typefind_pad, (gpointer) unlinked,
+ decode_bin);
+ }
+
+ elem_it = gst_bin_iterate_elements (GST_BIN (decode_bin));
+ while (!done) {
+ GstElement *element = NULL;
+
+ switch (gst_iterator_next (elem_it, (gpointer) & element)) {
+ case GST_ITERATOR_OK:
+ if (element != decode_bin->typefind && element != decode_bin->fakesink) {
+ GST_DEBUG_OBJECT (element, "removing autoplugged element");
+ disconnect_unlinked_signals (decode_bin, element);
+ gst_element_set_state (element, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN (decode_bin), element);
+ }
+ gst_object_unref (element);
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (elem_it);
+ break;
+ case GST_ITERATOR_ERROR:
+ done = TRUE;
+ break;
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ }
+ }
+ gst_iterator_free (elem_it);
+
+ done = FALSE;
+ gpad_it = gst_element_iterate_pads (GST_ELEMENT (decode_bin));
+ while (!done) {
+ GstPad *pad = NULL;
+
+ switch (gst_iterator_next (gpad_it, (gpointer) & pad)) {
+ case GST_ITERATOR_OK:
+ GST_DEBUG_OBJECT (pad, "inspecting pad %s:%s",
+ GST_DEBUG_PAD_NAME (pad));
+ if (GST_IS_GHOST_PAD (pad) && GST_PAD_IS_SRC (pad)) {
+ GST_DEBUG_OBJECT (pad, "removing ghost pad");
+ gst_element_remove_pad (GST_ELEMENT (decode_bin), pad);
+ }
+ gst_object_unref (pad);
+ break;
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (gpad_it);
+ break;
+ case GST_ITERATOR_ERROR:
+ done = TRUE;
+ break;
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ }
+ }
+ gst_iterator_free (gpad_it);
+
+ if (GST_IS_PAD (typefind_pad)) {
+ g_signal_handlers_unblock_by_func (typefind_pad, (gpointer) unlinked,
+ decode_bin);
+ g_signal_handlers_disconnect_by_func (typefind_pad, (gpointer) unlinked,
+ decode_bin);
+ gst_object_unref (typefind_pad);
+ }
+}
+
+static GstStateChangeReturn
+gst_decode_bin_change_state (GstElement * element, GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstDecodeBin *decode_bin;
+
+ decode_bin = GST_DECODE_BIN (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_NULL_TO_READY:
+ decode_bin->numpads = 0;
+ decode_bin->numwaiting = 0;
+ decode_bin->dynamics = NULL;
+ if (decode_bin->typefind == NULL)
+ goto missing_typefind;
+ break;
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ GST_OBJECT_LOCK (decode_bin);
+ decode_bin->shutting_down = FALSE;
+ decode_bin->have_type = FALSE;
+ GST_OBJECT_UNLOCK (decode_bin);
+
+ if (!add_fakesink (decode_bin))
+ goto missing_fakesink;
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ GST_OBJECT_LOCK (decode_bin);
+ decode_bin->shutting_down = TRUE;
+ GST_OBJECT_UNLOCK (decode_bin);
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+ if (ret == GST_STATE_CHANGE_FAILURE)
+ return ret;
+
+ switch (transition) {
+ case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ free_dynamics (decode_bin);
+ free_pad_probes (decode_bin);
+ cleanup_decodebin (decode_bin);
+ break;
+ default:
+ break;
+ }
+
+ return ret;
+/* ERRORS */
+missing_typefind:
+ {
+ gst_element_post_message (element,
+ gst_missing_element_message_new (element, "typefind"));
+ GST_ELEMENT_ERROR (element, CORE, MISSING_PLUGIN, (NULL), ("no typefind!"));
+ return GST_STATE_CHANGE_FAILURE;
+ }
+missing_fakesink:
+ {
+ gst_element_post_message (element,
+ gst_missing_element_message_new (element, "fakesink"));
+ GST_ELEMENT_ERROR (element, CORE, MISSING_PLUGIN, (NULL), ("no fakesink!"));
+ return GST_STATE_CHANGE_FAILURE;
+ }
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (gst_decode_bin_debug, "decodebin", 0, "decoder bin");
+
+#ifdef ENABLE_NLS
+ GST_DEBUG ("binding text domain %s to locale dir %s", GETTEXT_PACKAGE,
+ LOCALEDIR);
+ bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+ bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+#endif /* ENABLE_NLS */
+
+ return gst_element_register (plugin, "decodebin", GST_RANK_NONE,
+ GST_TYPE_DECODE_BIN);
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "decodebin",
+ "decoder bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
+ GST_PACKAGE_ORIGIN)
projects / mafwsubrenderer / blobdiff