--- /dev/null
+/* GStreamer
+ * Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * 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-uridecodebin
+ *
+ * Decodes data from a URI into raw media. It selects a source element that can
+ * handle the given #GstURIDecodeBin:uri scheme and connects it to a decodebin2.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <string.h>
+
+#include <gst/gst.h>
+#include <gst/gst-i18n-plugin.h>
+#include <gst/pbutils/missing-plugins.h>
+
+#include "gstplay-marshal.h"
+#include "gstplay-enum.h"
+#include "gstrawcaps.h"
+
+#define GST_TYPE_URI_DECODE_BIN \
+ (gst_uri_decode_bin_get_type())
+#define GST_URI_DECODE_BIN(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_URI_DECODE_BIN,GstURIDecodeBin))
+#define GST_URI_DECODE_BIN_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_URI_DECODE_BIN,GstURIDecodeBinClass))
+#define GST_IS_URI_DECODE_BIN(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_URI_DECODE_BIN))
+#define GST_IS_URI_DECODE_BIN_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_URI_DECODE_BIN))
+#define GST_URI_DECODE_BIN_CAST(obj) ((GstURIDecodeBin *) (obj))
+
+typedef struct _GstURIDecodeBin GstURIDecodeBin;
+typedef struct _GstURIDecodeBinClass GstURIDecodeBinClass;
+
+#define GST_URI_DECODE_BIN_GET_LOCK(dec) (((GstURIDecodeBin*)(dec))->lock)
+#define GST_URI_DECODE_BIN_LOCK(dec) (g_mutex_lock(GST_URI_DECODE_BIN_GET_LOCK(dec)))
+#define GST_URI_DECODE_BIN_UNLOCK(dec) (g_mutex_unlock(GST_URI_DECODE_BIN_GET_LOCK(dec)))
+
+/**
+ * GstURIDecodeBin
+ *
+ * uridecodebin element struct
+ */
+struct _GstURIDecodeBin
+{
+ GstBin parent_instance;
+
+ GMutex *lock; /* lock for constructing */
+
+ GMutex *factories_lock;
+ guint32 factories_cookie;
+ GList *factories; /* factories we can use for selecting elements */
+
+ gchar *uri;
+ guint connection_speed;
+ GstCaps *caps;
+ gchar *encoding;
+
+ gboolean is_stream;
+ gboolean is_download;
+ gboolean need_queue;
+ guint64 buffer_duration; /* When buffering, buffer duration (ns) */
+ guint buffer_size; /* When buffering, buffer size (bytes) */
+ gboolean download;
+ gboolean use_buffering;
+
+ GstElement *source;
+ GstElement *queue;
+ GstElement *typefind;
+ guint have_type_id; /* have-type signal id from typefind */
+ GSList *decodebins;
+ GSList *pending_decodebins;
+ GSList *srcpads;
+ gint numpads;
+
+ /* for dynamic sources */
+ guint src_np_sig_id; /* new-pad signal id */
+ guint src_nmp_sig_id; /* no-more-pads signal id */
+ gint pending;
+
+ gboolean async_pending; /* async-start has been emited */
+
+ gboolean expose_allstreams; /* Whether to expose unknow type streams or not */
+
+ guint64 ring_buffer_max_size; /* 0 means disabled */
+};
+
+struct _GstURIDecodeBinClass
+{
+ GstBinClass parent_class;
+
+ /* signal fired when we found a pad that we cannot decode */
+ void (*unknown_type) (GstElement * element, GstPad * pad, GstCaps * caps);
+
+ /* signal fired to know if we continue trying to decode the given caps */
+ gboolean (*autoplug_continue) (GstElement * element, GstPad * pad,
+ GstCaps * caps);
+ /* signal fired to get a list of factories to try to autoplug */
+ GValueArray *(*autoplug_factories) (GstElement * element, GstPad * pad,
+ GstCaps * caps);
+ /* signal fired to sort the factories */
+ GValueArray *(*autoplug_sort) (GstElement * element, GstPad * pad,
+ GstCaps * caps, GValueArray * factories);
+ /* signal fired to select from the proposed list of factories */
+ GstAutoplugSelectResult (*autoplug_select) (GstElement * element,
+ GstPad * pad, GstCaps * caps, GstElementFactory * factory);
+
+ /* emited when all data is decoded */
+ void (*drained) (GstElement * element);
+};
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src%d",
+ GST_PAD_SRC,
+ GST_PAD_SOMETIMES,
+ GST_STATIC_CAPS_ANY);
+
+static GstStaticCaps default_raw_caps = GST_STATIC_CAPS (DEFAULT_RAW_CAPS);
+
+GST_DEBUG_CATEGORY_STATIC (gst_uri_decode_bin_debug);
+#define GST_CAT_DEFAULT gst_uri_decode_bin_debug
+
+/* signals */
+enum
+{
+ SIGNAL_UNKNOWN_TYPE,
+ SIGNAL_AUTOPLUG_CONTINUE,
+ SIGNAL_AUTOPLUG_FACTORIES,
+ SIGNAL_AUTOPLUG_SELECT,
+ SIGNAL_DRAINED,
+ SIGNAL_AUTOPLUG_SORT,
+ SIGNAL_SOURCE_SETUP,
+ LAST_SIGNAL
+};
+
+/* properties */
+#define DEFAULT_PROP_URI NULL
+#define DEFAULT_PROP_SOURCE NULL
+#define DEFAULT_CONNECTION_SPEED 0
+#define DEFAULT_CAPS (gst_static_caps_get (&default_raw_caps))
+#define DEFAULT_SUBTITLE_ENCODING NULL
+#define DEFAULT_BUFFER_DURATION -1
+#define DEFAULT_BUFFER_SIZE -1
+#define DEFAULT_DOWNLOAD FALSE
+#define DEFAULT_USE_BUFFERING FALSE
+#define DEFAULT_EXPOSE_ALL_STREAMS TRUE
+#define DEFAULT_RING_BUFFER_MAX_SIZE 0
+
+enum
+{
+ PROP_0,
+ PROP_URI,
+ PROP_SOURCE,
+ PROP_CONNECTION_SPEED,
+ PROP_CAPS,
+ PROP_SUBTITLE_ENCODING,
+ PROP_BUFFER_SIZE,
+ PROP_BUFFER_DURATION,
+ PROP_DOWNLOAD,
+ PROP_USE_BUFFERING,
+ PROP_EXPOSE_ALL_STREAMS,
+ PROP_RING_BUFFER_MAX_SIZE,
+ PROP_LAST
+};
+
+static guint gst_uri_decode_bin_signals[LAST_SIGNAL] = { 0 };
+
+GType gst_uri_decode_bin_get_type (void);
+GST_BOILERPLATE (GstURIDecodeBin, gst_uri_decode_bin, GstBin, GST_TYPE_BIN);
+
+static void remove_decoders (GstURIDecodeBin * bin, gboolean force);
+static void gst_uri_decode_bin_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_uri_decode_bin_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static void gst_uri_decode_bin_finalize (GObject * obj);
+
+static void handle_message (GstBin * bin, GstMessage * msg);
+
+static gboolean gst_uri_decode_bin_query (GstElement * element,
+ GstQuery * query);
+static GstStateChangeReturn gst_uri_decode_bin_change_state (GstElement *
+ element, GstStateChange transition);
+
+static void
+gst_uri_decode_bin_base_init (gpointer g_class)
+{
+ GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (gstelement_class,
+ gst_static_pad_template_get (&srctemplate));
+ gst_element_class_set_details_simple (gstelement_class,
+ "URI Decoder", "Generic/Bin/Decoder",
+ "Autoplug and decode an URI to raw media",
+ "Wim Taymans <wim.taymans@gmail.com>");
+}
+
+static gboolean
+_gst_boolean_accumulator (GSignalInvocationHint * ihint,
+ GValue * return_accu, const GValue * handler_return, gpointer dummy)
+{
+ gboolean myboolean;
+
+ myboolean = g_value_get_boolean (handler_return);
+ if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
+ g_value_set_boolean (return_accu, myboolean);
+
+ /* stop emission if FALSE */
+ return myboolean;
+}
+
+static gboolean
+_gst_array_accumulator (GSignalInvocationHint * ihint,
+ GValue * return_accu, const GValue * handler_return, gpointer dummy)
+{
+ gpointer array;
+
+ array = g_value_get_boxed (handler_return);
+ if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
+ g_value_set_boxed (return_accu, array);
+
+ return FALSE;
+}
+
+static gboolean
+_gst_select_accumulator (GSignalInvocationHint * ihint,
+ GValue * return_accu, const GValue * handler_return, gpointer dummy)
+{
+ GstAutoplugSelectResult res;
+
+ res = g_value_get_enum (handler_return);
+ if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
+ g_value_set_enum (return_accu, res);
+
+ return FALSE;
+}
+
+static gboolean
+_gst_array_hasvalue_accumulator (GSignalInvocationHint * ihint,
+ GValue * return_accu, const GValue * handler_return, gpointer dummy)
+{
+ gpointer array;
+
+ array = g_value_get_boxed (handler_return);
+ if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
+ g_value_set_boxed (return_accu, array);
+
+ if (array != NULL)
+ return FALSE;
+
+ return TRUE;
+}
+
+static gboolean
+gst_uri_decode_bin_autoplug_continue (GstElement * element, GstPad * pad,
+ GstCaps * caps)
+{
+ /* by default we always continue */
+ return TRUE;
+}
+
+/* Must be called with factories lock! */
+static void
+gst_uri_decode_bin_update_factories_list (GstURIDecodeBin * dec)
+{
+ if (!dec->factories ||
+ dec->factories_cookie !=
+ gst_default_registry_get_feature_list_cookie ()) {
+ if (dec->factories)
+ gst_plugin_feature_list_free (dec->factories);
+ dec->factories =
+ gst_element_factory_list_get_elements
+ (GST_ELEMENT_FACTORY_TYPE_DECODABLE, GST_RANK_MARGINAL);
+ dec->factories_cookie = gst_default_registry_get_feature_list_cookie ();
+ }
+}
+
+static GValueArray *
+gst_uri_decode_bin_autoplug_factories (GstElement * element, GstPad * pad,
+ GstCaps * caps)
+{
+ GList *list, *tmp;
+ GValueArray *result;
+ GstURIDecodeBin *dec = GST_URI_DECODE_BIN_CAST (element);
+
+ GST_DEBUG_OBJECT (element, "finding factories");
+
+ /* return all compatible factories for caps */
+ g_mutex_lock (dec->factories_lock);
+ gst_uri_decode_bin_update_factories_list (dec);
+ list =
+ gst_element_factory_list_filter (dec->factories, caps, GST_PAD_SINK,
+ FALSE);
+ g_mutex_unlock (dec->factories_lock);
+
+ result = g_value_array_new (g_list_length (list));
+ for (tmp = list; tmp; tmp = tmp->next) {
+ GstElementFactory *factory = GST_ELEMENT_FACTORY_CAST (tmp->data);
+ GValue val = { 0, };
+
+ g_value_init (&val, G_TYPE_OBJECT);
+ g_value_set_object (&val, factory);
+ g_value_array_append (result, &val);
+ g_value_unset (&val);
+ }
+ gst_plugin_feature_list_free (list);
+
+ GST_DEBUG_OBJECT (element, "autoplug-factories returns %p", result);
+
+ return result;
+}
+
+static GValueArray *
+gst_uri_decode_bin_autoplug_sort (GstElement * element, GstPad * pad,
+ GstCaps * caps, GValueArray * factories)
+{
+ return NULL;
+}
+
+static GstAutoplugSelectResult
+gst_uri_decode_bin_autoplug_select (GstElement * element, GstPad * pad,
+ GstCaps * caps, GstElementFactory * factory)
+{
+ GST_DEBUG_OBJECT (element, "default autoplug-select returns TRY");
+
+ /* Try factory. */
+ return GST_AUTOPLUG_SELECT_TRY;
+}
+
+static void
+gst_uri_decode_bin_class_init (GstURIDecodeBinClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+ GstBinClass *gstbin_class;
+
+ gobject_class = G_OBJECT_CLASS (klass);
+ gstelement_class = GST_ELEMENT_CLASS (klass);
+ gstbin_class = GST_BIN_CLASS (klass);
+
+ gobject_class->set_property = gst_uri_decode_bin_set_property;
+ gobject_class->get_property = gst_uri_decode_bin_get_property;
+ gobject_class->finalize = gst_uri_decode_bin_finalize;
+
+ g_object_class_install_property (gobject_class, PROP_URI,
+ g_param_spec_string ("uri", "URI", "URI to decode",
+ DEFAULT_PROP_URI, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_SOURCE,
+ g_param_spec_object ("source", "Source", "Source object used",
+ GST_TYPE_ELEMENT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_CONNECTION_SPEED,
+ g_param_spec_uint ("connection-speed", "Connection Speed",
+ "Network connection speed in kbps (0 = unknown)",
+ 0, G_MAXUINT / 1000, DEFAULT_CONNECTION_SPEED,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_CAPS,
+ g_param_spec_boxed ("caps", "Caps",
+ "The caps on which to stop decoding. (NULL = default)",
+ GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_SUBTITLE_ENCODING,
+ g_param_spec_string ("subtitle-encoding", "subtitle encoding",
+ "Encoding to assume if input subtitles are not in UTF-8 encoding. "
+ "If not set, the GST_SUBTITLE_ENCODING environment variable will "
+ "be checked for an encoding to use. If that is not set either, "
+ "ISO-8859-15 will be assumed.", NULL,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_BUFFER_SIZE,
+ g_param_spec_int ("buffer-size", "Buffer size (bytes)",
+ "Buffer size when buffering streams (-1 default value)",
+ -1, G_MAXINT, DEFAULT_BUFFER_SIZE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (gobject_class, PROP_BUFFER_DURATION,
+ g_param_spec_int64 ("buffer-duration", "Buffer duration (ns)",
+ "Buffer duration when buffering streams (-1 default value)",
+ -1, G_MAXINT64, DEFAULT_BUFFER_DURATION,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstURIDecodeBin::download:
+ *
+ * For certain media type, enable download buffering.
+ */
+ g_object_class_install_property (gobject_class, PROP_DOWNLOAD,
+ g_param_spec_boolean ("download", "Download",
+ "Attempt download buffering when buffering network streams",
+ DEFAULT_DOWNLOAD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ /**
+ * GstURIDecodeBin::use-buffering:
+ *
+ * Emit BUFFERING messages based on low-/high-percent thresholds of the
+ * demuxed or parsed data.
+ * When download buffering is activated and used for the current media
+ * type, this property does nothing. Otherwise perform buffering on the
+ * demuxed or parsed media.
+ *
+ * Since: 0.10.26
+ */
+ g_object_class_install_property (gobject_class, PROP_USE_BUFFERING,
+ g_param_spec_boolean ("use-buffering", "Use Buffering",
+ "Perform buffering on demuxed/parsed media",
+ DEFAULT_USE_BUFFERING, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstURIDecodeBin::expose-all-streams
+ *
+ * Expose streams of unknown type.
+ *
+ * If set to %FALSE, then only the streams that can be decoded to the final
+ * caps (see 'caps' property) will have a pad exposed. Streams that do not
+ * match those caps but could have been decoded will not have decoder plugged
+ * in internally and will not have a pad exposed.
+ *
+ * Since: 0.10.30
+ */
+ g_object_class_install_property (gobject_class, PROP_EXPOSE_ALL_STREAMS,
+ g_param_spec_boolean ("expose-all-streams", "Expose All Streams",
+ "Expose all streams, including those of unknown type or that don't match the 'caps' property",
+ DEFAULT_EXPOSE_ALL_STREAMS,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstURIDecodeBin::ring-buffer-max-size
+ *
+ * The maximum size of the ring buffer in kilobytes. If set to 0, the ring
+ * buffer is disabled. Default is 0.
+ *
+ * Since: 0.10.31
+ */
+ g_object_class_install_property (gobject_class, PROP_RING_BUFFER_MAX_SIZE,
+ g_param_spec_uint64 ("ring-buffer-max-size",
+ "Max. ring buffer size (bytes)",
+ "Max. amount of data in the ring buffer (bytes, 0 = ring buffer disabled)",
+ 0, G_MAXUINT, DEFAULT_RING_BUFFER_MAX_SIZE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ /**
+ * GstURIDecodeBin::unknown-type:
+ * @bin: The uridecodebin.
+ * @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 uridecodebin.
+ */
+ gst_uri_decode_bin_signals[SIGNAL_UNKNOWN_TYPE] =
+ g_signal_new ("unknown-type", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass, unknown_type),
+ NULL, NULL, gst_marshal_VOID__OBJECT_BOXED, G_TYPE_NONE, 2,
+ GST_TYPE_PAD, GST_TYPE_CAPS);
+
+ /**
+ * GstURIDecodeBin::autoplug-continue:
+ * @bin: The uridecodebin.
+ * @pad: The #GstPad.
+ * @caps: The #GstCaps found.
+ *
+ * This signal is emitted whenever uridecodebin finds a new stream. It is
+ * emitted before looking for any elements that can handle that stream.
+ *
+ * <note>
+ * Invocation of signal handlers stops after the first signal handler
+ * returns #FALSE. Signal handlers are invoked in the order they were
+ * connected in.
+ * </note>
+ *
+ * Returns: #TRUE if you wish uridecodebin to look for elements that can
+ * handle the given @caps. If #FALSE, those caps will be considered as
+ * final and the pad will be exposed as such (see 'new-decoded-pad'
+ * signal).
+ */
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_CONTINUE] =
+ g_signal_new ("autoplug-continue", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass,
+ autoplug_continue), _gst_boolean_accumulator, NULL,
+ gst_play_marshal_BOOLEAN__OBJECT_BOXED, G_TYPE_BOOLEAN, 2, GST_TYPE_PAD,
+ GST_TYPE_CAPS);
+
+ /**
+ * GstURIDecodeBin::autoplug-factories:
+ * @bin: The uridecodebin.
+ * @pad: The #GstPad.
+ * @caps: The #GstCaps found.
+ *
+ * This function is emited when an array of possible factories for @caps on
+ * @pad is needed. Uridecodebin will by default return an array with all
+ * compatible factories, sorted by rank.
+ *
+ * If this function returns NULL, @pad will be exposed as a final caps.
+ *
+ * If this function returns an empty array, the pad will be considered as
+ * having an unhandled type media type.
+ *
+ * <note>
+ * Only the signal handler that is connected first will ever by invoked.
+ * Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
+ * signal, they will never be invoked!
+ * </note>
+ *
+ * Returns: a #GValueArray* with a list of factories to try. The factories are
+ * by default tried in the returned order or based on the index returned by
+ * "autoplug-select".
+ */
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_FACTORIES] =
+ g_signal_new ("autoplug-factories", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass,
+ autoplug_factories), _gst_array_accumulator, NULL,
+ gst_play_marshal_BOXED__OBJECT_BOXED, G_TYPE_VALUE_ARRAY, 2,
+ GST_TYPE_PAD, GST_TYPE_CAPS);
+
+ /**
+ * GstURIDecodeBin::autoplug-sort:
+ * @bin: The uridecodebin.
+ * @pad: The #GstPad.
+ * @caps: The #GstCaps.
+ * @factories: A #GValueArray of possible #GstElementFactory to use.
+ *
+ * Once decodebin2 has found the possible #GstElementFactory objects to try
+ * for @caps on @pad, this signal is emited. The purpose of the signal is for
+ * the application to perform additional sorting or filtering on the element
+ * factory array.
+ *
+ * The callee should copy and modify @factories or return #NULL if the
+ * order should not change.
+ *
+ * <note>
+ * Invocation of signal handlers stops after one signal handler has
+ * returned something else than #NULL. Signal handlers are invoked in
+ * the order they were connected in.
+ * Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
+ * signal, they will never be invoked!
+ * </note>
+ *
+ * Returns: A new sorted array of #GstElementFactory objects.
+ *
+ * Since: 0.10.33
+ */
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_SORT] =
+ g_signal_new ("autoplug-sort", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass, autoplug_sort),
+ _gst_array_hasvalue_accumulator, NULL,
+ gst_play_marshal_BOXED__OBJECT_BOXED_BOXED, G_TYPE_VALUE_ARRAY, 3,
+ GST_TYPE_PAD, GST_TYPE_CAPS, G_TYPE_VALUE_ARRAY);
+
+ /**
+ * GstURIDecodeBin::autoplug-select:
+ * @bin: The uridecodebin.
+ * @pad: The #GstPad.
+ * @caps: The #GstCaps.
+ * @factory: A #GstElementFactory to use.
+ *
+ * This signal is emitted once uridecodebin has found all the possible
+ * #GstElementFactory that can be used to handle the given @caps. For each of
+ * those factories, this signal is emited.
+ *
+ * The signal handler should return a #GST_TYPE_AUTOPLUG_SELECT_RESULT enum
+ * value indicating what decodebin2 should do next.
+ *
+ * A value of #GST_AUTOPLUG_SELECT_TRY will try to autoplug an element from
+ * @factory.
+ *
+ * A value of #GST_AUTOPLUG_SELECT_EXPOSE will expose @pad without plugging
+ * any element to it.
+ *
+ * A value of #GST_AUTOPLUG_SELECT_SKIP will skip @factory and move to the
+ * next factory.
+ *
+ * <note>
+ * Only the signal handler that is connected first will ever by invoked.
+ * Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
+ * signal, they will never be invoked!
+ * </note>
+ *
+ * Returns: a #GST_TYPE_AUTOPLUG_SELECT_RESULT that indicates the required
+ * operation. The default handler will always return
+ * #GST_AUTOPLUG_SELECT_TRY.
+ */
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_SELECT] =
+ g_signal_new ("autoplug-select", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass,
+ autoplug_select), _gst_select_accumulator, NULL,
+ gst_play_marshal_ENUM__OBJECT_BOXED_OBJECT,
+ GST_TYPE_AUTOPLUG_SELECT_RESULT, 3, GST_TYPE_PAD, GST_TYPE_CAPS,
+ GST_TYPE_ELEMENT_FACTORY);
+
+ /**
+ * GstURIDecodeBin::drained:
+ *
+ * This signal is emitted when the data for the current uri is played.
+ */
+ gst_uri_decode_bin_signals[SIGNAL_DRAINED] =
+ g_signal_new ("drained", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST,
+ G_STRUCT_OFFSET (GstURIDecodeBinClass, drained), NULL, NULL,
+ gst_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
+
+ /**
+ * GstURIDecodeBin::source-setup:
+ * @bin: the uridecodebin.
+ * @source: source element
+ *
+ * This signal is emitted after the source element has been created, so
+ * it can be configured by setting additional properties (e.g. set a
+ * proxy server for an http source, or set the device and read speed for
+ * an audio cd source). This is functionally equivalent to connecting to
+ * the notify::source signal, but more convenient.
+ *
+ * Since: 0.10.33
+ */
+ gst_uri_decode_bin_signals[SIGNAL_SOURCE_SETUP] =
+ g_signal_new ("source-setup", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ gst_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GST_TYPE_ELEMENT);
+
+ gstelement_class->query = GST_DEBUG_FUNCPTR (gst_uri_decode_bin_query);
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_uri_decode_bin_change_state);
+
+ gstbin_class->handle_message = GST_DEBUG_FUNCPTR (handle_message);
+
+ klass->autoplug_continue =
+ GST_DEBUG_FUNCPTR (gst_uri_decode_bin_autoplug_continue);
+ klass->autoplug_factories =
+ GST_DEBUG_FUNCPTR (gst_uri_decode_bin_autoplug_factories);
+ klass->autoplug_sort = GST_DEBUG_FUNCPTR (gst_uri_decode_bin_autoplug_sort);
+ klass->autoplug_select =
+ GST_DEBUG_FUNCPTR (gst_uri_decode_bin_autoplug_select);
+}
+
+static void
+gst_uri_decode_bin_init (GstURIDecodeBin * dec, GstURIDecodeBinClass * klass)
+{
+ /* first filter out the interesting element factories */
+ dec->factories_lock = g_mutex_new ();
+
+ dec->lock = g_mutex_new ();
+
+ dec->uri = g_strdup (DEFAULT_PROP_URI);
+ dec->connection_speed = DEFAULT_CONNECTION_SPEED;
+ dec->caps = DEFAULT_CAPS;
+ dec->encoding = g_strdup (DEFAULT_SUBTITLE_ENCODING);
+
+ dec->buffer_duration = DEFAULT_BUFFER_DURATION;
+ dec->buffer_size = DEFAULT_BUFFER_SIZE;
+ dec->download = DEFAULT_DOWNLOAD;
+ dec->use_buffering = DEFAULT_USE_BUFFERING;
+ dec->expose_allstreams = DEFAULT_EXPOSE_ALL_STREAMS;
+ dec->ring_buffer_max_size = DEFAULT_RING_BUFFER_MAX_SIZE;
+
+ GST_OBJECT_FLAG_SET (dec, GST_ELEMENT_IS_SOURCE);
+}
+
+static void
+gst_uri_decode_bin_finalize (GObject * obj)
+{
+ GstURIDecodeBin *dec = GST_URI_DECODE_BIN (obj);
+
+ remove_decoders (dec, TRUE);
+ g_mutex_free (dec->lock);
+ g_mutex_free (dec->factories_lock);
+ g_free (dec->uri);
+ g_free (dec->encoding);
+ if (dec->factories)
+ gst_plugin_feature_list_free (dec->factories);
+ if (dec->caps)
+ gst_caps_unref (dec->caps);
+
+ G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+static void
+gst_uri_decode_bin_set_encoding (GstURIDecodeBin * dec, const gchar * encoding)
+{
+ GSList *walk;
+
+ GST_URI_DECODE_BIN_LOCK (dec);
+
+ /* set property first */
+ GST_OBJECT_LOCK (dec);
+ g_free (dec->encoding);
+ dec->encoding = g_strdup (encoding);
+ GST_OBJECT_UNLOCK (dec);
+
+ /* set the property on all decodebins now */
+ for (walk = dec->decodebins; walk; walk = g_slist_next (walk)) {
+ GObject *decodebin = G_OBJECT (walk->data);
+
+ g_object_set (decodebin, "subtitle-encoding", encoding, NULL);
+ }
+ GST_URI_DECODE_BIN_UNLOCK (dec);
+}
+
+static void
+gst_uri_decode_bin_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstURIDecodeBin *dec = GST_URI_DECODE_BIN (object);
+
+ switch (prop_id) {
+ case PROP_URI:
+ GST_OBJECT_LOCK (dec);
+ g_free (dec->uri);
+ dec->uri = g_value_dup_string (value);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_CONNECTION_SPEED:
+ GST_OBJECT_LOCK (dec);
+ dec->connection_speed = g_value_get_uint (value) * 1000;
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_CAPS:
+ GST_OBJECT_LOCK (dec);
+ if (dec->caps)
+ gst_caps_unref (dec->caps);
+ dec->caps = g_value_dup_boxed (value);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_SUBTITLE_ENCODING:
+ gst_uri_decode_bin_set_encoding (dec, g_value_get_string (value));
+ break;
+ case PROP_BUFFER_SIZE:
+ dec->buffer_size = g_value_get_int (value);
+ break;
+ case PROP_BUFFER_DURATION:
+ dec->buffer_duration = g_value_get_int64 (value);
+ break;
+ case PROP_DOWNLOAD:
+ dec->download = g_value_get_boolean (value);
+ break;
+ case PROP_USE_BUFFERING:
+ dec->use_buffering = g_value_get_boolean (value);
+ break;
+ case PROP_EXPOSE_ALL_STREAMS:
+ dec->expose_allstreams = g_value_get_boolean (value);
+ break;
+ case PROP_RING_BUFFER_MAX_SIZE:
+ dec->ring_buffer_max_size = g_value_get_uint64 (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+gst_uri_decode_bin_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstURIDecodeBin *dec = GST_URI_DECODE_BIN (object);
+
+ switch (prop_id) {
+ case PROP_URI:
+ GST_OBJECT_LOCK (dec);
+ g_value_set_string (value, dec->uri);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_SOURCE:
+ GST_OBJECT_LOCK (dec);
+ g_value_set_object (value, dec->source);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_CONNECTION_SPEED:
+ GST_OBJECT_LOCK (dec);
+ g_value_set_uint (value, dec->connection_speed / 1000);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_CAPS:
+ GST_OBJECT_LOCK (dec);
+ g_value_set_boxed (value, dec->caps);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_SUBTITLE_ENCODING:
+ GST_OBJECT_LOCK (dec);
+ g_value_set_string (value, dec->encoding);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_BUFFER_SIZE:
+ GST_OBJECT_LOCK (dec);
+ g_value_set_int (value, dec->buffer_size);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_BUFFER_DURATION:
+ GST_OBJECT_LOCK (dec);
+ g_value_set_int64 (value, dec->buffer_duration);
+ GST_OBJECT_UNLOCK (dec);
+ break;
+ case PROP_DOWNLOAD:
+ g_value_set_boolean (value, dec->download);
+ break;
+ case PROP_USE_BUFFERING:
+ g_value_set_boolean (value, dec->use_buffering);
+ break;
+ case PROP_EXPOSE_ALL_STREAMS:
+ g_value_set_boolean (value, dec->expose_allstreams);
+ break;
+ case PROP_RING_BUFFER_MAX_SIZE:
+ g_value_set_uint64 (value, dec->ring_buffer_max_size);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+do_async_start (GstURIDecodeBin * dbin)
+{
+ GstMessage *message;
+
+ dbin->async_pending = TRUE;
+
+ message = gst_message_new_async_start (GST_OBJECT_CAST (dbin), FALSE);
+ parent_class->handle_message (GST_BIN_CAST (dbin), message);
+}
+
+static void
+do_async_done (GstURIDecodeBin * dbin)
+{
+ GstMessage *message;
+
+ if (dbin->async_pending) {
+ GST_DEBUG_OBJECT (dbin, "posting ASYNC_DONE");
+ message = gst_message_new_async_done (GST_OBJECT_CAST (dbin));
+ parent_class->handle_message (GST_BIN_CAST (dbin), message);
+
+ dbin->async_pending = FALSE;
+ }
+}
+
+#define DEFAULT_QUEUE_SIZE (3 * GST_SECOND)
+#define DEFAULT_QUEUE_MIN_THRESHOLD ((DEFAULT_QUEUE_SIZE * 30) / 100)
+#define DEFAULT_QUEUE_THRESHOLD ((DEFAULT_QUEUE_SIZE * 95) / 100)
+
+static void
+unknown_type_cb (GstElement * element, GstPad * pad, GstCaps * caps,
+ GstURIDecodeBin * decoder)
+{
+ gchar *capsstr;
+
+ capsstr = gst_caps_to_string (caps);
+ GST_ELEMENT_WARNING (decoder, STREAM, CODEC_NOT_FOUND,
+ (_("No decoder available for type \'%s\'."), capsstr), (NULL));
+ g_free (capsstr);
+}
+
+/* add a streaminfo that indicates that the stream is handled by the
+ * given element. This usually means that a stream without actual data is
+ * produced but one that is sunken by an element. Examples of this are:
+ * cdaudio, a hardware decoder/sink, dvd meta bins etc...
+ */
+static void
+add_element_stream (GstElement * element, GstURIDecodeBin * decoder)
+{
+ g_warning ("add element stream");
+}
+
+/* when the decoder element signals that no more pads will be generated, we
+ * can commit the current group.
+ */
+static void
+no_more_pads_full (GstElement * element, gboolean subs,
+ GstURIDecodeBin * decoder)
+{
+ gboolean final;
+
+ /* setup phase */
+ GST_DEBUG_OBJECT (element, "no more pads, %d pending", decoder->pending);
+
+ GST_URI_DECODE_BIN_LOCK (decoder);
+ final = (decoder->pending == 0);
+
+ /* nothing pending, we can exit */
+ if (final)
+ goto done;
+
+ /* the object has no pending no_more_pads */
+ if (!g_object_get_data (G_OBJECT (element), "pending"))
+ goto done;
+ g_object_set_data (G_OBJECT (element), "pending", NULL);
+
+ decoder->pending--;
+ final = (decoder->pending == 0);
+
+done:
+ GST_URI_DECODE_BIN_UNLOCK (decoder);
+
+ if (final)
+ gst_element_no_more_pads (GST_ELEMENT_CAST (decoder));
+
+ return;
+}
+
+static void
+no_more_pads (GstElement * element, GstURIDecodeBin * decoder)
+{
+ no_more_pads_full (element, FALSE, decoder);
+}
+
+static void
+source_no_more_pads (GstElement * element, GstURIDecodeBin * bin)
+{
+ GST_DEBUG_OBJECT (bin, "No more pads in source element %s.",
+ GST_ELEMENT_NAME (element));
+
+ g_signal_handler_disconnect (element, bin->src_np_sig_id);
+ bin->src_np_sig_id = 0;
+ g_signal_handler_disconnect (element, bin->src_nmp_sig_id);
+ bin->src_nmp_sig_id = 0;
+
+ no_more_pads_full (element, FALSE, bin);
+}
+
+/* Called by the signal handlers when a decodebin has
+ * found a new raw pad.
+ */
+static void
+new_decoded_pad_cb (GstElement * element, GstPad * pad, gboolean last,
+ GstURIDecodeBin * decoder)
+{
+ GstPad *newpad;
+ GstPadTemplate *pad_tmpl;
+ gchar *padname;
+
+ GST_DEBUG_OBJECT (element, "new decoded pad, name: <%s>. Last: %d",
+ GST_PAD_NAME (pad), last);
+
+ GST_URI_DECODE_BIN_LOCK (decoder);
+ padname = g_strdup_printf ("src%d", decoder->numpads);
+ decoder->numpads++;
+ GST_URI_DECODE_BIN_UNLOCK (decoder);
+
+ pad_tmpl = gst_static_pad_template_get (&srctemplate);
+ newpad = gst_ghost_pad_new_from_template (padname, pad, pad_tmpl);
+ gst_object_unref (pad_tmpl);
+ g_free (padname);
+
+ /* store ref to the ghostpad so we can remove it */
+ g_object_set_data (G_OBJECT (pad), "uridecodebin.ghostpad", newpad);
+
+ gst_pad_set_active (newpad, TRUE);
+ gst_element_add_pad (GST_ELEMENT_CAST (decoder), newpad);
+}
+
+
+static gboolean
+source_pad_event_probe (GstPad * pad, GstEvent * event,
+ GstURIDecodeBin * decoder)
+{
+ GST_LOG_OBJECT (pad, "%s, decoder %p", GST_EVENT_TYPE_NAME (event), decoder);
+
+ if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
+ GST_DEBUG_OBJECT (pad, "we received EOS");
+
+ g_signal_emit (decoder,
+ gst_uri_decode_bin_signals[SIGNAL_DRAINED], 0, NULL);
+ }
+ /* never drop events */
+ return TRUE;
+}
+
+/* called when we found a raw pad on the source element. We need to set up a
+ * padprobe to detect EOS before exposing the pad. */
+static void
+expose_decoded_pad (GstElement * element, GstPad * pad,
+ GstURIDecodeBin * decoder)
+{
+ gst_pad_add_event_probe (pad, G_CALLBACK (source_pad_event_probe), decoder);
+
+ new_decoded_pad_cb (element, pad, FALSE, decoder);
+}
+
+static void
+pad_removed_cb (GstElement * element, GstPad * pad, GstURIDecodeBin * decoder)
+{
+ GstPad *ghost;
+
+ GST_DEBUG_OBJECT (element, "pad removed name: <%s:%s>",
+ GST_DEBUG_PAD_NAME (pad));
+
+ /* we only care about srcpads */
+ if (!GST_PAD_IS_SRC (pad))
+ return;
+
+ if (!(ghost = g_object_get_data (G_OBJECT (pad), "uridecodebin.ghostpad")))
+ goto no_ghost;
+
+ /* unghost the pad */
+ gst_ghost_pad_set_target (GST_GHOST_PAD_CAST (ghost), NULL);
+
+ /* deactivate and remove */
+ gst_pad_set_active (pad, FALSE);
+ gst_element_remove_pad (GST_ELEMENT_CAST (decoder), ghost);
+
+ return;
+
+ /* ERRORS */
+no_ghost:
+ {
+ GST_WARNING_OBJECT (element, "no ghost pad found");
+ return;
+ }
+}
+
+/* helper function to lookup stuff in lists */
+static gboolean
+array_has_value (const gchar * values[], const gchar * value)
+{
+ gint i;
+
+ for (i = 0; values[i]; i++) {
+ if (g_str_has_prefix (value, values[i]))
+ return TRUE;
+ }
+ return FALSE;
+}
+
+static gboolean
+array_has_uri_value (const gchar * values[], const gchar * value)
+{
+ gint i;
+
+ for (i = 0; values[i]; i++) {
+ if (!g_ascii_strncasecmp (value, values[i], strlen (values[i])))
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/* list of URIs that we consider to be streams and that need buffering.
+ * We have no mechanism yet to figure this out with a query. */
+static const gchar *stream_uris[] = { "http://", "https://", "mms://",
+ "mmsh://", "mmsu://", "mmst://", "fd://", "myth://", "ssh://",
+ "ftp://", "sftp://",
+ NULL
+};
+
+/* list of URIs that need a queue because they are pretty bursty */
+static const gchar *queue_uris[] = { "cdda://", NULL };
+
+/* blacklisted URIs, we know they will always fail. */
+static const gchar *blacklisted_uris[] = { NULL };
+
+/* mime types that we don't consider to be media types */
+#if 0
+static const gchar *no_media_mimes[] = {
+ "application/x-executable", "application/x-bzip", "application/x-gzip",
+ "application/zip", "application/x-compress", NULL
+};
+#endif
+
+/* media types we can download */
+static const gchar *download_media[] = {
+ "video/quicktime", "video/mj2", "audio/x-m4a", "application/x-3gp",
+ "video/x-flv", "video/x-msvideo", "video/webm", NULL
+};
+
+#define IS_STREAM_URI(uri) (array_has_uri_value (stream_uris, uri))
+#define IS_QUEUE_URI(uri) (array_has_uri_value (queue_uris, uri))
+#define IS_BLACKLISTED_URI(uri) (array_has_uri_value (blacklisted_uris, uri))
+#define IS_NO_MEDIA_MIME(mime) (array_has_value (no_media_mimes, mime))
+#define IS_DOWNLOAD_MEDIA(media) (array_has_value (download_media, media))
+
+/*
+ * Generate and configure a source element.
+ */
+static GstElement *
+gen_source_element (GstURIDecodeBin * decoder)
+{
+ GstElement *source;
+
+ if (!decoder->uri)
+ goto no_uri;
+
+ GST_LOG_OBJECT (decoder, "finding source for %s", decoder->uri);
+
+ if (!gst_uri_is_valid (decoder->uri))
+ goto invalid_uri;
+
+ if (IS_BLACKLISTED_URI (decoder->uri))
+ goto uri_blacklisted;
+
+ source = gst_element_make_from_uri (GST_URI_SRC, decoder->uri, "source");
+ if (!source)
+ goto no_source;
+
+ GST_LOG_OBJECT (decoder, "found source type %s", G_OBJECT_TYPE_NAME (source));
+
+ decoder->is_stream = IS_STREAM_URI (decoder->uri);
+ GST_LOG_OBJECT (decoder, "source is stream: %d", decoder->is_stream);
+
+ decoder->need_queue = IS_QUEUE_URI (decoder->uri);
+ GST_LOG_OBJECT (decoder, "source needs queue: %d", decoder->need_queue);
+
+ /* make HTTP sources send extra headers so we get icecast
+ * metadata in case the stream is an icecast stream */
+ if (!strncmp (decoder->uri, "http://", 7) &&
+ g_object_class_find_property (G_OBJECT_GET_CLASS (source),
+ "iradio-mode")) {
+ GST_LOG_OBJECT (decoder, "configuring iradio-mode");
+ g_object_set (source, "iradio-mode", TRUE, NULL);
+ }
+
+ if (g_object_class_find_property (G_OBJECT_GET_CLASS (source),
+ "connection-speed")) {
+ GST_DEBUG_OBJECT (decoder,
+ "setting connection-speed=%d to source element",
+ decoder->connection_speed / 1000);
+ g_object_set (source, "connection-speed",
+ decoder->connection_speed / 1000, NULL);
+ }
+ if (g_object_class_find_property (G_OBJECT_GET_CLASS (source),
+ "subtitle-encoding")) {
+ GST_DEBUG_OBJECT (decoder,
+ "setting subtitle-encoding=%s to source element", decoder->encoding);
+ g_object_set (source, "subtitle-encoding", decoder->encoding, NULL);
+ }
+ return source;
+
+ /* ERRORS */
+no_uri:
+ {
+ GST_ELEMENT_ERROR (decoder, RESOURCE, NOT_FOUND,
+ (_("No URI specified to play from.")), (NULL));
+ return NULL;
+ }
+invalid_uri:
+ {
+ GST_ELEMENT_ERROR (decoder, RESOURCE, NOT_FOUND,
+ (_("Invalid URI \"%s\"."), decoder->uri), (NULL));
+ return NULL;
+ }
+uri_blacklisted:
+ {
+ GST_ELEMENT_ERROR (decoder, RESOURCE, FAILED,
+ (_("This stream type cannot be played yet.")), (NULL));
+ return NULL;
+ }
+no_source:
+ {
+ gchar *prot = gst_uri_get_protocol (decoder->uri);
+
+ /* whoops, could not create the source element, dig a little deeper to
+ * figure out what might be wrong. */
+ if (prot) {
+ GstMessage *msg;
+
+ msg =
+ gst_missing_uri_source_message_new (GST_ELEMENT_CAST (decoder), prot);
+ gst_element_post_message (GST_ELEMENT_CAST (decoder), msg);
+
+ GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN,
+ (_("No URI handler implemented for \"%s\"."), prot), (NULL));
+ g_free (prot);
+ } else
+ goto invalid_uri;
+
+ return NULL;
+ }
+}
+
+/**
+ * has_all_raw_caps:
+ * @pad: a #GstPad
+ * @all_raw: pointer to hold the result
+ *
+ * check if the caps of the pad are all raw. The caps are all raw if
+ * all of its structures contain audio/x-raw or video/x-raw.
+ *
+ * Returns: %FALSE @pad has no caps. Else TRUE and @all_raw set t the result.
+ */
+static gboolean
+has_all_raw_caps (GstPad * pad, GstCaps * rawcaps, gboolean * all_raw)
+{
+ GstCaps *caps, *intersection;
+ gint capssize;
+ gboolean res = FALSE;
+
+ caps = gst_pad_get_caps_reffed (pad);
+ if (caps == NULL)
+ return FALSE;
+
+ GST_DEBUG_OBJECT (pad, "have caps %" GST_PTR_FORMAT, caps);
+
+ capssize = gst_caps_get_size (caps);
+ /* no caps, skip and move to the next pad */
+ if (capssize == 0 || gst_caps_is_empty (caps) || gst_caps_is_any (caps))
+ goto done;
+
+ intersection = gst_caps_intersect (caps, rawcaps);
+ *all_raw = !gst_caps_is_empty (intersection)
+ && (gst_caps_get_size (intersection) == capssize);
+ gst_caps_unref (intersection);
+
+ res = TRUE;
+
+done:
+ gst_caps_unref (caps);
+ return res;
+}
+
+static void
+post_missing_plugin_error (GstElement * dec, const gchar * element_name)
+{
+ GstMessage *msg;
+
+ msg = gst_missing_element_message_new (dec, element_name);
+ gst_element_post_message (dec, msg);
+
+ GST_ELEMENT_ERROR (dec, CORE, MISSING_PLUGIN,
+ (_("Missing element '%s' - check your GStreamer installation."),
+ element_name), (NULL));
+}
+
+/**
+ * analyse_source:
+ * @decoder: a #GstURIDecodeBin
+ * @is_raw: are all pads raw data
+ * @have_out: does the source have output
+ * @is_dynamic: is this a dynamic source
+ * @use_queue: put a queue before raw output pads
+ *
+ * Check the source of @decoder and collect information about it.
+ *
+ * @is_raw will be set to TRUE if the source only produces raw pads. When this
+ * function returns, all of the raw pad of the source will be added
+ * to @decoder.
+ *
+ * @have_out: will be set to TRUE if the source has output pads.
+ *
+ * @is_dynamic: TRUE if the element will create (more) pads dynamically later
+ * on.
+ *
+ * Returns: FALSE if a fatal error occured while scanning.
+ */
+static gboolean
+analyse_source (GstURIDecodeBin * decoder, gboolean * is_raw,
+ gboolean * have_out, gboolean * is_dynamic, gboolean use_queue)
+{
+ GstIterator *pads_iter;
+ gboolean done = FALSE;
+ gboolean res = TRUE;
+ GstCaps *rawcaps;
+ GstPad *pad;
+
+ *have_out = FALSE;
+ *is_raw = FALSE;
+ *is_dynamic = FALSE;
+
+ g_object_get (decoder, "caps", &rawcaps, NULL);
+ if (!rawcaps)
+ rawcaps = DEFAULT_CAPS;
+
+ pads_iter = gst_element_iterate_src_pads (decoder->source);
+ while (!done) {
+ switch (gst_iterator_next (pads_iter, (gpointer) & pad)) {
+ case GST_ITERATOR_ERROR:
+ res = FALSE;
+ /* FALLTROUGH */
+ case GST_ITERATOR_DONE:
+ done = TRUE;
+ break;
+ case GST_ITERATOR_RESYNC:
+ /* reset results and resync */
+ *have_out = FALSE;
+ *is_raw = FALSE;
+ *is_dynamic = FALSE;
+ gst_iterator_resync (pads_iter);
+ break;
+ case GST_ITERATOR_OK:
+ /* we now officially have an ouput pad */
+ *have_out = TRUE;
+
+ /* if FALSE, this pad has no caps and we continue with the next pad. */
+ if (!has_all_raw_caps (pad, rawcaps, is_raw)) {
+ gst_object_unref (pad);
+ break;
+ }
+
+ /* caps on source pad are all raw, we can add the pad */
+ if (*is_raw) {
+ GstElement *outelem;
+
+ if (use_queue) {
+ GstPad *sinkpad;
+
+ /* insert a queue element right before the raw pad */
+ outelem = gst_element_factory_make ("queue2", NULL);
+ if (!outelem)
+ goto no_queue2;
+
+ gst_bin_add (GST_BIN_CAST (decoder), outelem);
+
+ sinkpad = gst_element_get_static_pad (outelem, "sink");
+ gst_pad_link (pad, sinkpad);
+ gst_object_unref (sinkpad);
+ gst_object_unref (pad);
+
+ /* save queue pointer so we can remove it later */
+ decoder->queue = outelem;
+
+ /* get the new raw srcpad */
+ pad = gst_element_get_static_pad (outelem, "src");
+ } else {
+ outelem = decoder->source;
+ }
+ expose_decoded_pad (outelem, pad, decoder);
+ }
+ gst_object_unref (pad);
+ break;
+ }
+ }
+ gst_iterator_free (pads_iter);
+ gst_caps_unref (rawcaps);
+
+ if (!*have_out) {
+ GstElementClass *elemclass;
+ GList *walk;
+
+ /* element has no output pads, check for padtemplates that list SOMETIMES
+ * pads. */
+ elemclass = GST_ELEMENT_GET_CLASS (decoder->source);
+
+ 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) {
+ if (GST_PAD_TEMPLATE_PRESENCE (templ) == GST_PAD_SOMETIMES)
+ *is_dynamic = TRUE;
+ break;
+ }
+ walk = g_list_next (walk);
+ }
+ }
+
+ return res;
+no_queue2:
+ {
+ post_missing_plugin_error (GST_ELEMENT_CAST (decoder), "queue2");
+
+ gst_object_unref (pad);
+ gst_iterator_free (pads_iter);
+ gst_caps_unref (rawcaps);
+
+ return FALSE;
+ }
+}
+
+/* Remove all decodebin2 from ourself
+ * If force is FALSE, then the decodebin2 instances will be stored in
+ * pending_decodebins for re-use later on.
+ * If force is TRUE, then all decodebin2 instances will be unreferenced
+ * and cleared, including the pending ones. */
+static void
+remove_decoders (GstURIDecodeBin * bin, gboolean force)
+{
+ GSList *walk;
+
+ for (walk = bin->decodebins; walk; walk = g_slist_next (walk)) {
+ GstElement *decoder = GST_ELEMENT_CAST (walk->data);
+
+ GST_DEBUG_OBJECT (bin, "removing old decoder element");
+ if (force) {
+ gst_element_set_state (decoder, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN_CAST (bin), decoder);
+ } else {
+ GstCaps *caps;
+
+ gst_element_set_state (decoder, GST_STATE_READY);
+ /* add it to our list of pending decodebins */
+ g_object_ref (decoder);
+ gst_bin_remove (GST_BIN_CAST (bin), decoder);
+ /* restore some properties we might have changed */
+ g_object_set (decoder, "sink-caps", NULL, NULL);
+ caps = DEFAULT_CAPS;
+ g_object_set (decoder, "caps", caps, NULL);
+ gst_caps_unref (caps);
+
+ bin->pending_decodebins =
+ g_slist_prepend (bin->pending_decodebins, decoder);
+ }
+ }
+ g_slist_free (bin->decodebins);
+ bin->decodebins = NULL;
+ if (force) {
+ GSList *tmp;
+
+ for (tmp = bin->pending_decodebins; tmp; tmp = tmp->next) {
+ gst_element_set_state ((GstElement *) tmp->data, GST_STATE_NULL);
+ gst_object_unref ((GstElement *) tmp->data);
+ }
+ g_slist_free (bin->pending_decodebins);
+ bin->pending_decodebins = NULL;
+
+ }
+
+ /* Don't loose the SOURCE flag */
+ GST_OBJECT_FLAG_SET (bin, GST_ELEMENT_IS_SOURCE);
+}
+
+static void
+remove_pads (GstURIDecodeBin * bin)
+{
+ GSList *walk;
+
+ for (walk = bin->srcpads; walk; walk = g_slist_next (walk)) {
+ GstPad *pad = GST_PAD_CAST (walk->data);
+
+ GST_DEBUG_OBJECT (bin, "removing old pad");
+ gst_pad_set_active (pad, FALSE);
+ gst_element_remove_pad (GST_ELEMENT_CAST (bin), pad);
+ }
+ g_slist_free (bin->srcpads);
+ bin->srcpads = NULL;
+}
+
+static void
+proxy_unknown_type_signal (GstElement * element, GstPad * pad, GstCaps * caps,
+ GstURIDecodeBin * dec)
+{
+ GST_DEBUG_OBJECT (dec, "unknown-type signaled");
+
+ g_signal_emit (dec,
+ gst_uri_decode_bin_signals[SIGNAL_UNKNOWN_TYPE], 0, pad, caps);
+}
+
+static gboolean
+proxy_autoplug_continue_signal (GstElement * element, GstPad * pad,
+ GstCaps * caps, GstURIDecodeBin * dec)
+{
+ gboolean result;
+
+ g_signal_emit (dec,
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_CONTINUE], 0, pad, caps,
+ &result);
+
+ GST_DEBUG_OBJECT (dec, "autoplug-continue returned %d", result);
+
+ return result;
+}
+
+static GValueArray *
+proxy_autoplug_factories_signal (GstElement * element, GstPad * pad,
+ GstCaps * caps, GstURIDecodeBin * dec)
+{
+ GValueArray *result;
+
+ g_signal_emit (dec,
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_FACTORIES], 0, pad, caps,
+ &result);
+
+ GST_DEBUG_OBJECT (dec, "autoplug-factories returned %p", result);
+
+ return result;
+}
+
+static GValueArray *
+proxy_autoplug_sort_signal (GstElement * element, GstPad * pad,
+ GstCaps * caps, GValueArray * factories, GstURIDecodeBin * dec)
+{
+ GValueArray *result;
+
+ g_signal_emit (dec,
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_SORT], 0, pad, caps,
+ factories, &result);
+
+ GST_DEBUG_OBJECT (dec, "autoplug-sort returned %p", result);
+
+ return result;
+}
+
+static GstAutoplugSelectResult
+proxy_autoplug_select_signal (GstElement * element, GstPad * pad,
+ GstCaps * caps, GstElementFactory * factory, GstURIDecodeBin * dec)
+{
+ GstAutoplugSelectResult result;
+
+ g_signal_emit (dec,
+ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_SELECT], 0, pad, caps, factory,
+ &result);
+
+ GST_DEBUG_OBJECT (dec, "autoplug-select returned %d", result);
+
+ return result;
+}
+
+static void
+proxy_drained_signal (GstElement * element, GstURIDecodeBin * dec)
+{
+ GST_DEBUG_OBJECT (dec, "drained signaled");
+
+ g_signal_emit (dec, gst_uri_decode_bin_signals[SIGNAL_DRAINED], 0, NULL);
+}
+
+/* make a decodebin and connect to all the signals */
+static GstElement *
+make_decoder (GstURIDecodeBin * decoder)
+{
+ GstElement *decodebin;
+
+ /* re-use pending decodebin2 */
+ if (decoder->pending_decodebins) {
+ GSList *first = decoder->pending_decodebins;
+ GST_LOG_OBJECT (decoder, "re-using pending decodebin2");
+ decodebin = (GstElement *) first->data;
+ decoder->pending_decodebins =
+ g_slist_delete_link (decoder->pending_decodebins, first);
+ } else {
+ GST_LOG_OBJECT (decoder, "making new decodebin2");
+
+ /* now create the decoder element */
+ decodebin = gst_element_factory_make ("decodebin2", NULL);
+
+ if (!decodebin)
+ goto no_decodebin;
+
+ /* sanity check */
+ if (decodebin->numsinkpads == 0)
+ goto no_typefind;
+
+ /* connect signals to proxy */
+ g_signal_connect (decodebin, "unknown-type",
+ G_CALLBACK (proxy_unknown_type_signal), decoder);
+ g_signal_connect (decodebin, "autoplug-continue",
+ G_CALLBACK (proxy_autoplug_continue_signal), decoder);
+ g_signal_connect (decodebin, "autoplug-factories",
+ G_CALLBACK (proxy_autoplug_factories_signal), decoder);
+ g_signal_connect (decodebin, "autoplug-sort",
+ G_CALLBACK (proxy_autoplug_sort_signal), decoder);
+ g_signal_connect (decodebin, "autoplug-select",
+ G_CALLBACK (proxy_autoplug_select_signal), decoder);
+ g_signal_connect (decodebin, "drained",
+ G_CALLBACK (proxy_drained_signal), decoder);
+
+ /* set up callbacks to create the links between decoded data
+ * and video/audio/subtitle rendering/output. */
+ g_signal_connect (decodebin,
+ "new-decoded-pad", G_CALLBACK (new_decoded_pad_cb), decoder);
+ g_signal_connect (decodebin,
+ "pad-removed", G_CALLBACK (pad_removed_cb), decoder);
+ g_signal_connect (decodebin, "no-more-pads",
+ G_CALLBACK (no_more_pads), decoder);
+ g_signal_connect (decodebin,
+ "unknown-type", G_CALLBACK (unknown_type_cb), decoder);
+ }
+
+ /* configure caps if we have any */
+ if (decoder->caps)
+ g_object_set (decodebin, "caps", decoder->caps, NULL);
+
+ /* Propagate expose-all-streams property */
+ g_object_set (decodebin, "expose-all-streams", decoder->expose_allstreams,
+ NULL);
+
+ if (!decoder->is_stream) {
+ /* propagate the use-buffering property but only when we are not already
+ * doing stream buffering with queue2. FIXME, we might want to do stream
+ * buffering with the multiqueue buffering instead of queue2. */
+ g_object_set (decodebin, "use-buffering", decoder->use_buffering, NULL);
+
+ if (decoder->use_buffering) {
+ guint max_bytes;
+ guint64 max_time;
+
+ /* configure sizes when buffering */
+ if ((max_bytes = decoder->buffer_size) == -1)
+ max_bytes = 2 * 1024 * 1024;
+ if ((max_time = decoder->buffer_duration) == -1)
+ max_time = 2 * GST_SECOND;
+
+ g_object_set (decodebin, "max-size-bytes", max_bytes, "max-size-buffers",
+ (guint) 0, "max-size-time", max_time, NULL);
+ }
+ }
+
+ g_object_set_data (G_OBJECT (decodebin), "pending", GINT_TO_POINTER (1));
+ g_object_set (decodebin, "subtitle-encoding", decoder->encoding, NULL);
+ decoder->pending++;
+ GST_LOG_OBJECT (decoder, "have %d pending dynamic objects", decoder->pending);
+
+ gst_bin_add (GST_BIN_CAST (decoder), decodebin);
+
+ decoder->decodebins = g_slist_prepend (decoder->decodebins, decodebin);
+
+ return decodebin;
+
+ /* ERRORS */
+no_decodebin:
+ {
+ post_missing_plugin_error (GST_ELEMENT_CAST (decoder), "decodebin2");
+ GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (NULL),
+ ("No decodebin2 element, check your installation"));
+ return NULL;
+ }
+no_typefind:
+ {
+ gst_object_unref (decodebin);
+ GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (NULL),
+ ("No typefind element, decodebin2 is unusable, check your installation"));
+ return NULL;
+ }
+}
+
+/* signaled when we have a stream and we need to configure the download
+ * buffering or regular buffering */
+static void
+type_found (GstElement * typefind, guint probability,
+ GstCaps * caps, GstURIDecodeBin * decoder)
+{
+ GstElement *dec_elem, *queue;
+ GstStructure *s;
+ const gchar *media_type;
+
+ GST_DEBUG_OBJECT (decoder, "typefind found caps %" GST_PTR_FORMAT, caps);
+
+ s = gst_caps_get_structure (caps, 0);
+ media_type = gst_structure_get_name (s);
+
+ /* remember if we need download buffering */
+ decoder->is_download = IS_DOWNLOAD_MEDIA (media_type) && decoder->download;
+ /* only enable download buffering if the upstream duration is known */
+ if (decoder->is_download) {
+ GstFormat fmt = GST_FORMAT_BYTES;
+ gint64 dur;
+
+ decoder->is_download = (gst_element_query_duration (typefind, &fmt, &dur)
+ && fmt == GST_FORMAT_BYTES && dur != -1);
+ }
+
+ dec_elem = make_decoder (decoder);
+ if (!dec_elem)
+ goto no_decodebin;
+
+ queue = gst_element_factory_make ("queue2", NULL);
+ if (!queue)
+ goto no_queue2;
+
+ g_object_set (queue, "use-buffering", TRUE, NULL);
+ g_object_set (queue, "ring-buffer-max-size", decoder->ring_buffer_max_size,
+ NULL);
+
+ GST_DEBUG_OBJECT (decoder, "check media-type %s, %d", media_type,
+ decoder->download);
+
+ if (decoder->is_download) {
+ gchar *temp_template, *filename;
+ const gchar *tmp_dir, *prgname;
+
+ tmp_dir = g_get_tmp_dir ();
+ prgname = g_get_prgname ();
+ if (prgname == NULL)
+ prgname = "GStreamer";
+
+ filename = g_strdup_printf ("%s-XXXXXX", prgname);
+
+ /* build our filename */
+ temp_template = g_build_filename (tmp_dir, filename, NULL);
+
+ GST_DEBUG_OBJECT (decoder, "enable download buffering in %s (%s, %s, %s)",
+ temp_template, tmp_dir, prgname, filename);
+
+ /* configure progressive download for selected media types */
+ g_object_set (queue, "temp-template", temp_template, NULL);
+
+ g_free (filename);
+ g_free (temp_template);
+ }
+
+ /* Disable max-size-buffers */
+ g_object_set (queue, "max-size-buffers", 0, NULL);
+
+ /* If buffer size or duration are set, set them on the queue2 element */
+ if (decoder->buffer_size != -1)
+ g_object_set (queue, "max-size-bytes", decoder->buffer_size, NULL);
+ if (decoder->buffer_duration != -1)
+ g_object_set (queue, "max-size-time", decoder->buffer_duration, NULL);
+
+ gst_bin_add (GST_BIN_CAST (decoder), queue);
+
+ if (!gst_element_link_pads (typefind, "src", queue, "sink"))
+ goto could_not_link;
+
+ /* to force caps on the decodebin element and avoid reparsing stuff by
+ * typefind. It also avoids a deadlock in the way typefind activates pads in
+ * the state change */
+ g_object_set (dec_elem, "sink-caps", caps, NULL);
+
+ if (!gst_element_link_pads (queue, "src", dec_elem, "sink"))
+ goto could_not_link;
+
+ /* PLAYING in one go might fail (see bug #632782) */
+ gst_element_set_state (dec_elem, GST_STATE_PAUSED);
+ gst_element_set_state (dec_elem, GST_STATE_PLAYING);
+ gst_element_set_state (queue, GST_STATE_PLAYING);
+
+ do_async_done (decoder);
+
+ return;
+
+ /* ERRORS */
+no_decodebin:
+ {
+ /* error was posted */
+ return;
+ }
+could_not_link:
+ {
+ GST_ELEMENT_ERROR (decoder, CORE, NEGOTIATION,
+ (NULL), ("Can't link typefind to decodebin2 element"));
+ return;
+ }
+no_queue2:
+ {
+ post_missing_plugin_error (GST_ELEMENT_CAST (decoder), "queue2");
+ return;
+ }
+}
+
+/* setup a streaming source. This will first plug a typefind element to the
+ * source. After we find the type, we decide to plug a queue2 and continue to
+ * plug a decodebin2 starting from the found caps */
+static gboolean
+setup_streaming (GstURIDecodeBin * decoder)
+{
+ GstElement *typefind;
+
+ /* now create the decoder element */
+ typefind = gst_element_factory_make ("typefind", NULL);
+ if (!typefind)
+ goto no_typefind;
+
+ gst_bin_add (GST_BIN_CAST (decoder), typefind);
+
+ if (!gst_element_link_pads (decoder->source, NULL, typefind, "sink"))
+ goto could_not_link;
+
+ decoder->typefind = typefind;
+
+ /* connect a signal to find out when the typefind element found
+ * a type */
+ decoder->have_type_id =
+ g_signal_connect (decoder->typefind, "have-type",
+ G_CALLBACK (type_found), decoder);
+
+ do_async_start (decoder);
+
+ return TRUE;
+
+ /* ERRORS */
+no_typefind:
+ {
+ post_missing_plugin_error (GST_ELEMENT_CAST (decoder), "typefind");
+ GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (NULL),
+ ("No typefind element, check your installation"));
+ return FALSE;
+ }
+could_not_link:
+ {
+ GST_ELEMENT_ERROR (decoder, CORE, NEGOTIATION,
+ (NULL), ("Can't link source to typefind element"));
+ gst_bin_remove (GST_BIN_CAST (decoder), typefind);
+ /* Don't loose the SOURCE flag */
+ GST_OBJECT_FLAG_SET (decoder, GST_ELEMENT_IS_SOURCE);
+ return FALSE;
+ }
+}
+
+/* remove source and all related elements */
+static void
+remove_source (GstURIDecodeBin * bin)
+{
+ GstElement *source = bin->source;
+
+ if (source) {
+ GST_DEBUG_OBJECT (bin, "removing old src element");
+ gst_element_set_state (source, GST_STATE_NULL);
+
+ if (bin->src_np_sig_id) {
+ g_signal_handler_disconnect (source, bin->src_np_sig_id);
+ bin->src_np_sig_id = 0;
+ }
+ if (bin->src_nmp_sig_id) {
+ g_signal_handler_disconnect (source, bin->src_nmp_sig_id);
+ bin->src_nmp_sig_id = 0;
+ }
+ gst_bin_remove (GST_BIN_CAST (bin), source);
+ bin->source = NULL;
+ }
+ if (bin->queue) {
+ GST_DEBUG_OBJECT (bin, "removing old queue element");
+ gst_element_set_state (bin->queue, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN_CAST (bin), bin->queue);
+ bin->queue = NULL;
+ }
+ if (bin->typefind) {
+ GST_DEBUG_OBJECT (bin, "removing old typefind element");
+ gst_element_set_state (bin->typefind, GST_STATE_NULL);
+ gst_bin_remove (GST_BIN_CAST (bin), bin->typefind);
+ bin->typefind = NULL;
+ }
+ /* Don't loose the SOURCE flag */
+ GST_OBJECT_FLAG_SET (bin, GST_ELEMENT_IS_SOURCE);
+}
+
+/* is called when a dynamic source element created a new pad. */
+static void
+source_new_pad (GstElement * element, GstPad * pad, GstURIDecodeBin * bin)
+{
+ GstElement *decoder;
+ gboolean is_raw;
+ GstCaps *rawcaps;
+
+ GST_URI_DECODE_BIN_LOCK (bin);
+ GST_DEBUG_OBJECT (bin, "Found new pad %s.%s in source element %s",
+ GST_DEBUG_PAD_NAME (pad), GST_ELEMENT_NAME (element));
+
+ g_object_get (bin, "caps", &rawcaps, NULL);
+ if (!rawcaps)
+ rawcaps = DEFAULT_CAPS;
+
+ /* if this is a pad with all raw caps, we can expose it */
+ if (has_all_raw_caps (pad, rawcaps, &is_raw) && is_raw) {
+ /* it's all raw, create output pads. */
+ GST_URI_DECODE_BIN_UNLOCK (bin);
+ gst_caps_unref (rawcaps);
+ expose_decoded_pad (element, pad, bin);
+ return;
+ }
+ gst_caps_unref (rawcaps);
+
+ /* not raw, create decoder */
+ decoder = make_decoder (bin);
+ if (!decoder)
+ goto no_decodebin;
+
+ /* and link to decoder */
+ if (!gst_element_link_pads (bin->source, NULL, decoder, "sink"))
+ goto could_not_link;
+
+ GST_DEBUG_OBJECT (bin, "linked decoder to new pad");
+
+ gst_element_set_state (decoder, GST_STATE_PLAYING);
+ GST_URI_DECODE_BIN_UNLOCK (bin);
+
+ return;
+
+ /* ERRORS */
+no_decodebin:
+ {
+ /* error was posted */
+ GST_URI_DECODE_BIN_UNLOCK (bin);
+ return;
+ }
+could_not_link:
+ {
+ GST_ELEMENT_ERROR (bin, CORE, NEGOTIATION,
+ (NULL), ("Can't link source to decoder element"));
+ GST_URI_DECODE_BIN_UNLOCK (bin);
+ return;
+ }
+}
+
+/* construct and run the source and decoder elements until we found
+ * all the streams or until a preroll queue has been filled.
+*/
+static gboolean
+setup_source (GstURIDecodeBin * decoder)
+{
+ gboolean is_raw, have_out, is_dynamic;
+
+ GST_DEBUG_OBJECT (decoder, "setup source");
+
+ /* delete old src */
+ remove_source (decoder);
+
+ decoder->pending = 0;
+
+ /* create and configure an element that can handle the uri */
+ if (!(decoder->source = gen_source_element (decoder)))
+ goto no_source;
+
+ /* state will be merged later - if file is not found, error will be
+ * handled by the application right after. */
+ gst_bin_add (GST_BIN_CAST (decoder), decoder->source);
+
+ /* notify of the new source used */
+ g_object_notify (G_OBJECT (decoder), "source");
+
+ g_signal_emit (decoder, gst_uri_decode_bin_signals[SIGNAL_SOURCE_SETUP],
+ 0, decoder->source);
+
+ /* remove the old decoders now, if any */
+ remove_decoders (decoder, FALSE);
+
+ /* see if the source element emits raw audio/video all by itself,
+ * if so, we can create streams for the pads and be done with it.
+ * Also check that is has source pads, if not, we assume it will
+ * do everything itself. */
+ if (!analyse_source (decoder, &is_raw, &have_out, &is_dynamic,
+ decoder->need_queue))
+ goto invalid_source;
+
+ if (is_raw) {
+ GST_DEBUG_OBJECT (decoder, "Source provides all raw data");
+ /* source provides raw data, we added the pads and we can now signal a
+ * no_more pads because we are done. */
+ gst_element_no_more_pads (GST_ELEMENT_CAST (decoder));
+ return TRUE;
+ }
+ if (!have_out && !is_dynamic) {
+ GST_DEBUG_OBJECT (decoder, "Source has no output pads");
+ /* create a stream to indicate that this uri is handled by a self
+ * contained element. We are now done. */
+ add_element_stream (decoder->source, decoder);
+ return TRUE;
+ }
+ if (is_dynamic) {
+ GST_DEBUG_OBJECT (decoder, "Source has dynamic output pads");
+ /* connect a handler for the new-pad signal */
+ decoder->src_np_sig_id =
+ g_signal_connect (decoder->source, "pad-added",
+ G_CALLBACK (source_new_pad), decoder);
+ decoder->src_nmp_sig_id =
+ g_signal_connect (decoder->source, "no-more-pads",
+ G_CALLBACK (source_no_more_pads), decoder);
+ g_object_set_data (G_OBJECT (decoder->source), "pending",
+ GINT_TO_POINTER (1));
+ decoder->pending++;
+ } else {
+ if (decoder->is_stream) {
+ GST_DEBUG_OBJECT (decoder, "Setting up streaming");
+ /* do the stream things here */
+ if (!setup_streaming (decoder))
+ goto streaming_failed;
+ } else {
+ GstElement *dec_elem;
+
+ /* no streaming source, we can link now */
+ GST_DEBUG_OBJECT (decoder, "Plugging decodebin to source");
+
+ dec_elem = make_decoder (decoder);
+ if (!dec_elem)
+ goto no_decoder;
+
+ if (!gst_element_link_pads (decoder->source, NULL, dec_elem, "sink"))
+ goto could_not_link;
+ }
+ }
+ return TRUE;
+
+ /* ERRORS */
+no_source:
+ {
+ /* error message was already posted */
+ return FALSE;
+ }
+invalid_source:
+ {
+ GST_ELEMENT_ERROR (decoder, CORE, FAILED,
+ (_("Source element is invalid.")), (NULL));
+ return FALSE;
+ }
+no_decoder:
+ {
+ /* message was posted */
+ return FALSE;
+ }
+streaming_failed:
+ {
+ /* message was posted */
+ return FALSE;
+ }
+could_not_link:
+ {
+ GST_ELEMENT_ERROR (decoder, CORE, NEGOTIATION,
+ (NULL), ("Can't link source to decoder element"));
+ return FALSE;
+ }
+}
+
+static void
+value_list_append_structure_list (GValue * list_val, GstStructure ** first,
+ GList * structure_list)
+{
+ GList *l;
+
+ for (l = structure_list; l != NULL; l = l->next) {
+ GValue val = { 0, };
+
+ if (*first == NULL)
+ *first = gst_structure_copy ((GstStructure *) l->data);
+
+ g_value_init (&val, GST_TYPE_STRUCTURE);
+ g_value_take_boxed (&val, gst_structure_copy ((GstStructure *) l->data));
+ gst_value_list_append_value (list_val, &val);
+ g_value_unset (&val);
+ }
+}
+
+/* if it's a redirect message with multiple redirect locations we might
+ * want to pick a different 'best' location depending on the required
+ * bitrates and the connection speed */
+static GstMessage *
+handle_redirect_message (GstURIDecodeBin * dec, GstMessage * msg)
+{
+ const GValue *locations_list, *location_val;
+ GstMessage *new_msg;
+ GstStructure *new_structure = NULL;
+ GList *l_good = NULL, *l_neutral = NULL, *l_bad = NULL;
+ GValue new_list = { 0, };
+ guint size, i;
+
+ GST_DEBUG_OBJECT (dec, "redirect message: %" GST_PTR_FORMAT, msg);
+ GST_DEBUG_OBJECT (dec, "connection speed: %u", dec->connection_speed);
+
+ if (dec->connection_speed == 0 || msg->structure == NULL)
+ return msg;
+
+ locations_list = gst_structure_get_value (msg->structure, "locations");
+ if (locations_list == NULL)
+ return msg;
+
+ size = gst_value_list_get_size (locations_list);
+ if (size < 2)
+ return msg;
+
+ /* maintain existing order as much as possible, just sort references
+ * with too high a bitrate to the end (the assumption being that if
+ * bitrates are given they are given for all interesting streams and
+ * that the you-need-at-least-version-xyz redirect has the same bitrate
+ * as the lowest referenced redirect alternative) */
+ for (i = 0; i < size; ++i) {
+ const GstStructure *s;
+ gint bitrate = 0;
+
+ location_val = gst_value_list_get_value (locations_list, i);
+ s = (const GstStructure *) g_value_get_boxed (location_val);
+ if (!gst_structure_get_int (s, "minimum-bitrate", &bitrate) || bitrate <= 0) {
+ GST_DEBUG_OBJECT (dec, "no bitrate: %" GST_PTR_FORMAT, s);
+ l_neutral = g_list_append (l_neutral, (gpointer) s);
+ } else if (bitrate > dec->connection_speed) {
+ GST_DEBUG_OBJECT (dec, "bitrate too high: %" GST_PTR_FORMAT, s);
+ l_bad = g_list_append (l_bad, (gpointer) s);
+ } else if (bitrate <= dec->connection_speed) {
+ GST_DEBUG_OBJECT (dec, "bitrate OK: %" GST_PTR_FORMAT, s);
+ l_good = g_list_append (l_good, (gpointer) s);
+ }
+ }
+
+ g_value_init (&new_list, GST_TYPE_LIST);
+ value_list_append_structure_list (&new_list, &new_structure, l_good);
+ value_list_append_structure_list (&new_list, &new_structure, l_neutral);
+ value_list_append_structure_list (&new_list, &new_structure, l_bad);
+ gst_structure_set_value (new_structure, "locations", &new_list);
+ g_value_unset (&new_list);
+
+ g_list_free (l_good);
+ g_list_free (l_neutral);
+ g_list_free (l_bad);
+
+ new_msg = gst_message_new_element (msg->src, new_structure);
+ gst_message_unref (msg);
+
+ GST_DEBUG_OBJECT (dec, "new redirect message: %" GST_PTR_FORMAT, new_msg);
+ return new_msg;
+}
+
+static void
+handle_message (GstBin * bin, GstMessage * msg)
+{
+ if (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ELEMENT && msg->structure != NULL
+ && gst_structure_has_name (msg->structure, "redirect")) {
+ /* sort redirect messages based on the connection speed. This simplifies
+ * the user of this element as it can in most cases just pick the first item
+ * of the sorted list as a good redirection candidate. It can of course
+ * choose something else from the list if it has a better way. */
+ msg = handle_redirect_message (GST_URI_DECODE_BIN (bin), msg);
+ }
+ GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
+}
+
+/* generic struct passed to all query fold methods
+ * FIXME, move to core.
+ */
+typedef struct
+{
+ GstQuery *query;
+ gint64 min;
+ gint64 max;
+ gboolean seekable;
+ gboolean live;
+} QueryFold;
+
+typedef void (*QueryInitFunction) (GstURIDecodeBin * dec, QueryFold * fold);
+typedef void (*QueryDoneFunction) (GstURIDecodeBin * dec, QueryFold * fold);
+
+/* for duration/position we collect all durations/positions and take
+ * the MAX of all valid results */
+static void
+decoder_query_init (GstURIDecodeBin * dec, QueryFold * fold)
+{
+ fold->min = 0;
+ fold->max = -1;
+ fold->seekable = TRUE;
+ fold->live = 0;
+}
+
+static gboolean
+decoder_query_duration_fold (GstPad * item, GValue * ret, QueryFold * fold)
+{
+ if (gst_pad_query (item, fold->query)) {
+ gint64 duration;
+
+ g_value_set_boolean (ret, TRUE);
+
+ gst_query_parse_duration (fold->query, NULL, &duration);
+
+ GST_DEBUG_OBJECT (item, "got duration %" G_GINT64_FORMAT, duration);
+
+ if (duration > fold->max)
+ fold->max = duration;
+ }
+ gst_object_unref (item);
+ return TRUE;
+}
+
+static void
+decoder_query_duration_done (GstURIDecodeBin * dec, QueryFold * fold)
+{
+ GstFormat format;
+
+ gst_query_parse_duration (fold->query, &format, NULL);
+ /* store max in query result */
+ gst_query_set_duration (fold->query, format, fold->max);
+
+ GST_DEBUG ("max duration %" G_GINT64_FORMAT, fold->max);
+}
+
+static gboolean
+decoder_query_position_fold (GstPad * item, GValue * ret, QueryFold * fold)
+{
+ if (gst_pad_query (item, fold->query)) {
+ gint64 position;
+
+ g_value_set_boolean (ret, TRUE);
+
+ gst_query_parse_position (fold->query, NULL, &position);
+
+ GST_DEBUG_OBJECT (item, "got position %" G_GINT64_FORMAT, position);
+
+ if (position > fold->max)
+ fold->max = position;
+ }
+
+ gst_object_unref (item);
+ return TRUE;
+}
+
+static void
+decoder_query_position_done (GstURIDecodeBin * dec, QueryFold * fold)
+{
+ GstFormat format;
+
+ gst_query_parse_position (fold->query, &format, NULL);
+ /* store max in query result */
+ gst_query_set_position (fold->query, format, fold->max);
+
+ GST_DEBUG_OBJECT (dec, "max position %" G_GINT64_FORMAT, fold->max);
+}
+
+static gboolean
+decoder_query_latency_fold (GstPad * item, GValue * ret, QueryFold * fold)
+{
+ if (gst_pad_query (item, fold->query)) {
+ GstClockTime min, max;
+ gboolean live;
+
+ g_value_set_boolean (ret, TRUE);
+
+ gst_query_parse_latency (fold->query, &live, &min, &max);
+
+ GST_DEBUG_OBJECT (item,
+ "got latency min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT
+ ", live %d", GST_TIME_ARGS (min), GST_TIME_ARGS (max), live);
+
+ /* for the combined latency we collect the MAX of all min latencies and
+ * the MIN of all max latencies */
+ if (min > fold->min)
+ fold->min = min;
+ if (fold->max == -1)
+ fold->max = max;
+ else if (max < fold->max)
+ fold->max = max;
+ if (fold->live == FALSE)
+ fold->live = live;
+ }
+
+ gst_object_unref (item);
+ return TRUE;
+}
+
+static void
+decoder_query_latency_done (GstURIDecodeBin * dec, QueryFold * fold)
+{
+ /* store max in query result */
+ gst_query_set_latency (fold->query, fold->live, fold->min, fold->max);
+
+ GST_DEBUG_OBJECT (dec,
+ "latency min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT
+ ", live %d", GST_TIME_ARGS (fold->min), GST_TIME_ARGS (fold->max),
+ fold->live);
+}
+
+/* we are seekable if all srcpads are seekable */
+static gboolean
+decoder_query_seeking_fold (GstPad * item, GValue * ret, QueryFold * fold)
+{
+ if (gst_pad_query (item, fold->query)) {
+ gboolean seekable;
+
+ g_value_set_boolean (ret, TRUE);
+ gst_query_parse_seeking (fold->query, NULL, &seekable, NULL, NULL);
+
+ GST_DEBUG_OBJECT (item, "got seekable %d", seekable);
+
+ if (fold->seekable == TRUE)
+ fold->seekable = seekable;
+ }
+ gst_object_unref (item);
+
+ return TRUE;
+}
+
+static void
+decoder_query_seeking_done (GstURIDecodeBin * dec, QueryFold * fold)
+{
+ GstFormat format;
+
+ gst_query_parse_seeking (fold->query, &format, NULL, NULL, NULL);
+ gst_query_set_seeking (fold->query, format, fold->seekable, 0, -1);
+
+ GST_DEBUG_OBJECT (dec, "seekable %d", fold->seekable);
+}
+
+/* generic fold, return first valid result */
+static gboolean
+decoder_query_generic_fold (GstPad * item, GValue * ret, QueryFold * fold)
+{
+ gboolean res;
+
+ if ((res = gst_pad_query (item, fold->query))) {
+ g_value_set_boolean (ret, TRUE);
+ GST_DEBUG_OBJECT (item, "answered query %p", fold->query);
+ }
+
+ gst_object_unref (item);
+
+ /* and stop as soon as we have a valid result */
+ return !res;
+}
+
+
+/* we're a bin, the default query handler iterates sink elements, which we don't
+ * have normally. We should just query all source pads.
+ */
+static gboolean
+gst_uri_decode_bin_query (GstElement * element, GstQuery * query)
+{
+ GstURIDecodeBin *decoder;
+ gboolean res = FALSE;
+ GstIterator *iter;
+ GstIteratorFoldFunction fold_func;
+ QueryInitFunction fold_init = NULL;
+ QueryDoneFunction fold_done = NULL;
+ QueryFold fold_data;
+ GValue ret = { 0 };
+
+ decoder = GST_URI_DECODE_BIN (element);
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_DURATION:
+ /* iterate and collect durations */
+ fold_func = (GstIteratorFoldFunction) decoder_query_duration_fold;
+ fold_init = decoder_query_init;
+ fold_done = decoder_query_duration_done;
+ break;
+ case GST_QUERY_POSITION:
+ /* iterate and collect durations */
+ fold_func = (GstIteratorFoldFunction) decoder_query_position_fold;
+ fold_init = decoder_query_init;
+ fold_done = decoder_query_position_done;
+ break;
+ case GST_QUERY_LATENCY:
+ /* iterate and collect durations */
+ fold_func = (GstIteratorFoldFunction) decoder_query_latency_fold;
+ fold_init = decoder_query_init;
+ fold_done = decoder_query_latency_done;
+ break;
+ case GST_QUERY_SEEKING:
+ /* iterate and collect durations */
+ fold_func = (GstIteratorFoldFunction) decoder_query_seeking_fold;
+ fold_init = decoder_query_init;
+ fold_done = decoder_query_seeking_done;
+ break;
+ default:
+ fold_func = (GstIteratorFoldFunction) decoder_query_generic_fold;
+ break;
+ }
+
+ fold_data.query = query;
+
+ g_value_init (&ret, G_TYPE_BOOLEAN);
+ g_value_set_boolean (&ret, FALSE);
+
+ iter = gst_element_iterate_src_pads (element);
+ GST_DEBUG_OBJECT (element, "Sending query %p (type %d) to src pads",
+ query, GST_QUERY_TYPE (query));
+
+ if (fold_init)
+ fold_init (decoder, &fold_data);
+
+ while (TRUE) {
+ GstIteratorResult ires;
+
+ ires = gst_iterator_fold (iter, fold_func, &ret, &fold_data);
+
+ switch (ires) {
+ case GST_ITERATOR_RESYNC:
+ gst_iterator_resync (iter);
+ if (fold_init)
+ fold_init (decoder, &fold_data);
+ g_value_set_boolean (&ret, FALSE);
+ break;
+ case GST_ITERATOR_OK:
+ case GST_ITERATOR_DONE:
+ res = g_value_get_boolean (&ret);
+ if (fold_done != NULL && res)
+ fold_done (decoder, &fold_data);
+ goto done;
+ default:
+ res = FALSE;
+ goto done;
+ }
+ }
+done:
+ gst_iterator_free (iter);
+
+ return res;
+}
+
+static GstStateChangeReturn
+gst_uri_decode_bin_change_state (GstElement * element,
+ GstStateChange transition)
+{
+ GstStateChangeReturn ret;
+ GstURIDecodeBin *decoder;
+
+ decoder = GST_URI_DECODE_BIN (element);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ if (!setup_source (decoder))
+ goto source_failed;
+ break;
+ default:
+ break;
+ }
+
+ ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
+
+ switch (transition) {
+ case GST_STATE_CHANGE_READY_TO_PAUSED:
+ GST_DEBUG ("ready to paused");
+ if (ret == GST_STATE_CHANGE_FAILURE)
+ goto setup_failed;
+ break;
+ case GST_STATE_CHANGE_PAUSED_TO_READY:
+ GST_DEBUG ("paused to ready");
+ remove_decoders (decoder, FALSE);
+ remove_pads (decoder);
+ remove_source (decoder);
+ do_async_done (decoder);
+ break;
+ case GST_STATE_CHANGE_READY_TO_NULL:
+ GST_DEBUG ("ready to null");
+ remove_decoders (decoder, TRUE);
+ remove_pads (decoder);
+ remove_source (decoder);
+ break;
+ default:
+ break;
+ }
+ return ret;
+
+ /* ERRORS */
+source_failed:
+ {
+ return GST_STATE_CHANGE_FAILURE;
+ }
+setup_failed:
+ {
+ /* clean up leftover groups */
+ return GST_STATE_CHANGE_FAILURE;
+ }
+}
+
+gboolean gst_decode_bin_plugin_init (GstPlugin * plugin);
+
+static gboolean
+gst_uri_decode_bin_plugin_init (GstPlugin * plugin)
+{
+ GST_DEBUG_CATEGORY_INIT (gst_uri_decode_bin_debug, "uridecodebin", 0,
+ "URI decoder element");
+
+#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, "uridecodebin", GST_RANK_NONE,
+ GST_TYPE_URI_DECODE_BIN);
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ if (!gst_decode_bin_plugin_init (plugin))
+ return FALSE;
+ if (!gst_uri_decode_bin_plugin_init (plugin))
+ return FALSE;
+
+ return TRUE;
+}
+
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "uridecodebin",
+ "URI Decoder bin", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
+ GST_PACKAGE_ORIGIN)
projects / mafwsubrenderer / blobdiff