mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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7144b47a83
Original commit message from CVS: rename properly
610 lines
16 KiB
C
610 lines
16 KiB
C
/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include <gst/gst.h>
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/* generic templates */
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GstStaticPadTemplate decoder_bin_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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GstStaticPadTemplate decoder_bin_src_template =
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GST_STATIC_PAD_TEMPLATE ("src%d",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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GST_DEBUG_CATEGORY_STATIC (gst_decode_bin_debug);
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#define GST_CAT_DEFAULT gst_decode_bin_debug
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#define GST_TYPE_DECODE_BIN (gst_decode_bin_get_type())
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#define GST_DECODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_DECODE_BIN,GstDecodeBin))
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#define GST_DECODE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_DECODE_BIN,GstDecodeBinClass))
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#define GST_IS_DECODE_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_DECODE_BIN))
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#define GST_IS_DECODE_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_DECODE_BIN))
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typedef struct _GstDecodeBin GstDecodeBin;
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typedef struct _GstDecodeBinClass GstDecodeBinClass;
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struct _GstDecodeBin
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{
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GstBin bin;
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GstElement *typefind;
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gboolean threaded;
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GList *dynamics;
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GList *factories;
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gint numpads;
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GList *elements;
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guint have_type_id;
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};
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struct _GstDecodeBinClass
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{
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GstBinClass parent_class;
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void (*new_decoded_pad) (GstElement * element, GstPad * pad, gboolean last);
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void (*unknown_type) (GstElement * element, GstCaps * caps);
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};
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/* props */
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enum
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{
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ARG_0,
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ARG_THREADED,
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};
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/* signals */
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enum
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{
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SIGNAL_NEW_DECODED_PAD,
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SIGNAL_UNKNOWN_TYPE,
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LAST_SIGNAL
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};
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typedef struct
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{
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gint np_sig_id;
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gint nmp_sig_id;
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GstElement *element;
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GstDecodeBin *decode_bin;
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}
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GstDynamic;
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static void gst_decode_bin_class_init (GstDecodeBinClass * klass);
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static void gst_decode_bin_init (GstDecodeBin * decode_bin);
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static void gst_decode_bin_dispose (GObject * object);
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static void gst_decode_bin_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * spec);
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static void gst_decode_bin_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * spec);
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static GstElementStateReturn gst_decode_bin_change_state (GstElement * element);
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static void type_found (GstElement * typefind, guint probability,
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GstCaps * caps, GstDecodeBin * decode_bin);
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static GstElement *try_to_link_1 (GstDecodeBin * decode_bin, GstPad * pad,
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GList * factories);
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static void close_link (GstElement * element, GstDecodeBin * decode_bin);
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static void close_pad_link (GstElement * element, GstPad * pad,
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GstCaps * caps, GstDecodeBin * decode_bin);
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static GstElementClass *parent_class;
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static guint gst_decode_bin_signals[LAST_SIGNAL] = { 0 };
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static GstElementDetails gst_decode_bin_details = {
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"Decoder Bin",
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"Generic/Bin/Decoder",
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"Autoplug and decode to raw media",
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"Wim Taymans <wim@fluendo.com>"
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};
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static GType
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gst_decode_bin_get_type (void)
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{
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static GType gst_decode_bin_type = 0;
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if (!gst_decode_bin_type) {
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static const GTypeInfo gst_decode_bin_info = {
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sizeof (GstDecodeBinClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_decode_bin_class_init,
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NULL,
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NULL,
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sizeof (GstDecodeBin),
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0,
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(GInstanceInitFunc) gst_decode_bin_init,
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NULL
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};
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gst_decode_bin_type =
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g_type_register_static (GST_TYPE_BIN, "GstDecodeBin",
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&gst_decode_bin_info, 0);
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}
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return gst_decode_bin_type;
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}
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static void
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gst_decode_bin_class_init (GstDecodeBinClass * klass)
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{
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GObjectClass *gobject_klass;
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GstElementClass *gstelement_klass;
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GstBinClass *gstbin_klass;
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gobject_klass = (GObjectClass *) klass;
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gstelement_klass = (GstElementClass *) klass;
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gstbin_klass = (GstBinClass *) klass;
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parent_class = g_type_class_ref (gst_bin_get_type ());
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gobject_klass->set_property = gst_decode_bin_set_property;
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gobject_klass->get_property = gst_decode_bin_get_property;
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g_object_class_install_property (gobject_klass, ARG_THREADED,
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g_param_spec_boolean ("threaded", "Threaded", "Use threads",
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FALSE, G_PARAM_READWRITE));
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gst_decode_bin_signals[SIGNAL_NEW_DECODED_PAD] =
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g_signal_new ("new-decoded-pad", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstDecodeBinClass, new_decoded_pad), NULL, NULL,
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gst_marshal_VOID__OBJECT_POINTER, G_TYPE_NONE, 2, G_TYPE_OBJECT,
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G_TYPE_BOOLEAN);
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gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE] =
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g_signal_new ("unknown-type", G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodeBinClass, unknown_type),
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NULL, NULL, gst_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GST_TYPE_CAPS);
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gobject_klass->dispose = GST_DEBUG_FUNCPTR (gst_decode_bin_dispose);
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gst_element_class_add_pad_template (gstelement_klass,
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gst_static_pad_template_get (&decoder_bin_src_template));
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gst_element_class_set_details (gstelement_klass, &gst_decode_bin_details);
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gstelement_klass->change_state =
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GST_DEBUG_FUNCPTR (gst_decode_bin_change_state);
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}
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static gboolean
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gst_decode_bin_is_dynamic (GstDecodeBin * decode_bin)
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{
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return decode_bin->dynamics != NULL;
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}
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static gboolean
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gst_decode_bin_factory_filter (GstPluginFeature * feature,
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GstDecodeBin * decode_bin)
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{
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guint rank;
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const gchar *klass;
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if (!GST_IS_ELEMENT_FACTORY (feature))
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return FALSE;
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klass = gst_element_factory_get_klass (GST_ELEMENT_FACTORY (feature));
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if (strstr (klass, "Demux") == NULL && strstr (klass, "Decoder") == NULL) {
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return FALSE;
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}
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rank = gst_plugin_feature_get_rank (feature);
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if (rank < GST_RANK_MARGINAL)
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return FALSE;
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return TRUE;
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}
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static gint
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compare_ranks (GstPluginFeature * f1, GstPluginFeature * f2)
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{
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return gst_plugin_feature_get_rank (f2) - gst_plugin_feature_get_rank (f1);
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}
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static void
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print_feature (GstPluginFeature * feature)
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{
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GST_DEBUG ("%s", gst_plugin_feature_get_name (feature));
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}
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static void
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gst_decode_bin_init (GstDecodeBin * decode_bin)
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{
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GList *factories;
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factories = gst_registry_pool_feature_filter (
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(GstPluginFeatureFilter) gst_decode_bin_factory_filter,
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FALSE, decode_bin);
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decode_bin->factories = g_list_sort (factories, (GCompareFunc) compare_ranks);
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g_list_foreach (decode_bin->factories, (GFunc) print_feature, NULL);
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decode_bin->typefind = gst_element_factory_make ("typefind", "typefind");
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if (!decode_bin->typefind) {
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g_warning ("can't find typefind element");
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}
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gst_bin_add (GST_BIN (decode_bin), decode_bin->typefind);
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gst_element_add_ghost_pad (GST_ELEMENT (decode_bin),
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gst_element_get_pad (decode_bin->typefind, "sink"), "sink");
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decode_bin->have_type_id =
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g_signal_connect (G_OBJECT (decode_bin->typefind), "have_type",
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G_CALLBACK (type_found), decode_bin);
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decode_bin->dynamics = NULL;
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}
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static void
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gst_decode_bin_dispose (GObject * object)
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{
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GstDecodeBin *decode_bin;
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GList *dyns;
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decode_bin = GST_DECODE_BIN (object);
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g_signal_handler_disconnect (G_OBJECT (decode_bin->typefind),
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decode_bin->have_type_id);
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gst_bin_remove (GST_BIN (decode_bin), decode_bin->typefind);
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g_list_free (decode_bin->factories);
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for (dyns = decode_bin->dynamics; dyns; dyns = g_list_next (dyns)) {
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GstDynamic *dynamic = (GstDynamic *) dyns->data;
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g_free (dynamic);
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}
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g_list_free (decode_bin->dynamics);
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decode_bin->dynamics = NULL;
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if (G_OBJECT_CLASS (parent_class)->dispose) {
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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}
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static GList *
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find_compatibles (GstDecodeBin * decode_bin, const GstCaps * caps)
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{
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GList *factories;
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GList *to_try = NULL;
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for (factories = decode_bin->factories; factories;
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factories = g_list_next (factories)) {
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GstElementFactory *factory = GST_ELEMENT_FACTORY (factories->data);
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const GList *templates;
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GList *walk;
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templates = gst_element_factory_get_pad_templates (factory);
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for (walk = (GList *) templates; walk; walk = g_list_next (walk)) {
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GstPadTemplate *templ = GST_PAD_TEMPLATE (walk->data);
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if (templ->direction == GST_PAD_SINK) {
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GstCaps *intersect;
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intersect =
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gst_caps_intersect (caps, gst_pad_template_get_caps (templ));
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if (!gst_caps_is_empty (intersect)) {
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to_try = g_list_append (to_try, factory);
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}
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gst_caps_free (intersect);
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}
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}
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}
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return to_try;
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}
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static void
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close_pad_link (GstElement * element, GstPad * pad, GstCaps * caps,
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GstDecodeBin * decode_bin)
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{
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GList *to_try;
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GstStructure *structure;
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const gchar *mimetype;
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if (gst_caps_is_empty (caps)) {
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g_signal_emit (G_OBJECT (decode_bin),
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gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, caps);
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return;
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}
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structure = gst_caps_get_structure (caps, 0);
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mimetype = gst_structure_get_name (structure);
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/* first see if this is raw */
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if (g_str_has_prefix (mimetype, "video/x-raw") ||
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g_str_has_prefix (mimetype, "audio/x-raw")) {
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gchar *padname;
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GstPad *ghost;
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gboolean dynamic;
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padname = g_strdup_printf ("src%d", decode_bin->numpads);
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decode_bin->numpads++;
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gst_element_add_ghost_pad (GST_ELEMENT (decode_bin), pad, padname);
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ghost = gst_element_get_pad (GST_ELEMENT (decode_bin), padname);
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dynamic = gst_decode_bin_is_dynamic (decode_bin);
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/* our own signal with an extra flag that this is the only pad */
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g_signal_emit (G_OBJECT (decode_bin),
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gst_decode_bin_signals[SIGNAL_NEW_DECODED_PAD], 0, ghost, !dynamic);
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g_free (padname);
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return;
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}
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/* then continue plugging */
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to_try = find_compatibles (decode_bin, caps);
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if (to_try == NULL) {
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g_signal_emit (G_OBJECT (decode_bin),
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gst_decode_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, caps);
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return;
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}
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try_to_link_1 (decode_bin, pad, to_try);
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}
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static GstElement *
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try_to_link_1 (GstDecodeBin * decode_bin, GstPad * pad, GList * factories)
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{
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GList *walk;
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for (walk = factories; walk; walk = g_list_next (walk)) {
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GstElementFactory *factory = GST_ELEMENT_FACTORY (walk->data);
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GstElement *element;
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gboolean ret;
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GST_DEBUG ("trying to link %s",
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gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
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element = gst_element_factory_create (factory, NULL);
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if (element == NULL)
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continue;
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GST_DEBUG ("adding %s", gst_element_get_name (element));
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gst_bin_add (GST_BIN (decode_bin), element);
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decode_bin->elements = g_list_prepend (decode_bin->elements, element);
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ret = gst_pad_link (pad, gst_element_get_pad (element, "sink"));
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if (ret) {
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const gchar *klass;
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GstElementFactory *factory;
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factory = gst_element_get_factory (element);
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klass = gst_element_factory_get_klass (factory);
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if (decode_bin->threaded) {
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if (strstr (klass, "Demux") != NULL) {
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/* FIXME, do something with threads here */
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}
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}
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close_link (element, decode_bin);
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gst_element_sync_state_with_parent (element);
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return element;
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} else {
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gst_bin_remove (GST_BIN (decode_bin), element);
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}
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}
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return NULL;
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}
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static void
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new_pad (GstElement * element, GstPad * pad, GstDynamic * dynamic)
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{
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close_pad_link (element, pad, gst_pad_get_caps (pad), dynamic->decode_bin);
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}
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static void
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no_more_pads (GstElement * element, GstDynamic * dynamic)
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{
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GstDecodeBin *decode_bin = dynamic->decode_bin;
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GST_DEBUG ("decodebin: no more pads");
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g_signal_handler_disconnect (G_OBJECT (dynamic->element), dynamic->np_sig_id);
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g_signal_handler_disconnect (G_OBJECT (dynamic->element),
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dynamic->nmp_sig_id);
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decode_bin->dynamics = g_list_remove (decode_bin->dynamics, dynamic);
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g_free (dynamic);
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if (decode_bin->dynamics == NULL)
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gst_element_no_more_pads (GST_ELEMENT (decode_bin));
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}
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static void
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close_link (GstElement * element, GstDecodeBin * decode_bin)
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{
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GList *pads;
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gboolean dynamic = FALSE;
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GList *to_connect = NULL;
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for (pads = gst_element_get_pad_template_list (element); pads;
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pads = g_list_next (pads)) {
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GstPadTemplate *templ = GST_PAD_TEMPLATE (pads->data);
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if (GST_PAD_TEMPLATE_DIRECTION (templ) != GST_PAD_SRC)
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continue;
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switch (GST_PAD_TEMPLATE_PRESENCE (templ)) {
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case GST_PAD_ALWAYS:
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{
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GstPad *pad = gst_element_get_pad (element,
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GST_PAD_TEMPLATE_NAME_TEMPLATE (templ));
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if (pad) {
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to_connect = g_list_prepend (to_connect, pad);
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}
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break;
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}
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case GST_PAD_SOMETIMES:
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{
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GstPad *pad = gst_element_get_pad (element,
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GST_PAD_TEMPLATE_NAME_TEMPLATE (templ));
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if (pad) {
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to_connect = g_list_prepend (to_connect, pad);
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} else {
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dynamic = TRUE;
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}
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break;
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}
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case GST_PAD_REQUEST:
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break;
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}
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}
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if (dynamic) {
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GstDynamic *dyn;
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dyn = g_new0 (GstDynamic, 1);
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dyn->np_sig_id = g_signal_connect (G_OBJECT (element), "new-pad",
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G_CALLBACK (new_pad), dyn);
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dyn->nmp_sig_id = g_signal_connect (G_OBJECT (element), "no-more-pads",
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G_CALLBACK (no_more_pads), dyn);
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|
dyn->element = element;
|
|
dyn->decode_bin = decode_bin;
|
|
|
|
decode_bin->dynamics = g_list_prepend (decode_bin->dynamics, dyn);
|
|
}
|
|
|
|
for (pads = to_connect; pads; pads = g_list_next (pads)) {
|
|
GstPad *pad = GST_PAD (pads->data);
|
|
|
|
close_pad_link (element, pad, gst_pad_get_caps (pad), decode_bin);
|
|
}
|
|
g_list_free (to_connect);
|
|
}
|
|
|
|
static void
|
|
type_found (GstElement * typefind, guint probability, GstCaps * caps,
|
|
GstDecodeBin * decode_bin)
|
|
{
|
|
gboolean dynamic;
|
|
|
|
close_pad_link (typefind, gst_element_get_pad (typefind, "src"), caps,
|
|
decode_bin);
|
|
|
|
dynamic = gst_decode_bin_is_dynamic (decode_bin);
|
|
if (dynamic == FALSE) {
|
|
gst_element_no_more_pads (GST_ELEMENT (decode_bin));
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_decode_bin_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstDecodeBin *decode_bin;
|
|
|
|
g_return_if_fail (GST_IS_DECODE_BIN (object));
|
|
|
|
decode_bin = GST_DECODE_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_THREADED:
|
|
decode_bin->threaded = g_value_get_boolean (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 *decode_bin;
|
|
|
|
g_return_if_fail (GST_IS_DECODE_BIN (object));
|
|
|
|
decode_bin = GST_DECODE_BIN (object);
|
|
|
|
switch (prop_id) {
|
|
case ARG_THREADED:
|
|
g_value_set_boolean (value, decode_bin->threaded);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static GstElementStateReturn
|
|
gst_decode_bin_change_state (GstElement * element)
|
|
{
|
|
GstElementStateReturn ret;
|
|
GstDecodeBin *decode_bin;
|
|
gint transition;
|
|
|
|
decode_bin = GST_DECODE_BIN (element);
|
|
|
|
transition = GST_STATE_TRANSITION (element);
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element);
|
|
if (ret != GST_STATE_SUCCESS) {
|
|
return ret;
|
|
}
|
|
|
|
switch (transition) {
|
|
case GST_STATE_NULL_TO_READY:
|
|
decode_bin->numpads = 0;
|
|
decode_bin->threaded = FALSE;
|
|
decode_bin->dynamics = NULL;
|
|
break;
|
|
case GST_STATE_READY_TO_PAUSED:
|
|
case GST_STATE_PAUSED_TO_PLAYING:
|
|
case GST_STATE_PLAYING_TO_PAUSED:
|
|
case GST_STATE_PAUSED_TO_READY:
|
|
case GST_STATE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_decode_bin_debug, "decodebin", 0, "decoder bin");
|
|
|
|
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, GST_ORIGIN)
|