/* GStreamer * Copyright (C) <2007> Wim Taymans * * 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ /** * SECTION:element-uridecodebin * @title: 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 decodebin. */ /* FIXME 0.11: suppress warnings for deprecated API such as GValueArray * with newer GLib versions (>= 2.31.0) */ #define GLIB_DISABLE_DEPRECATION_WARNINGS #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include "gstplay-enum.h" #include "gstrawcaps.h" #include "gstplaybackelements.h" #include "gstplaybackutils.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_LOCK(dec) (g_mutex_lock(&((GstURIDecodeBin*)(dec))->lock)) #define GST_URI_DECODE_BIN_UNLOCK(dec) (g_mutex_unlock(&((GstURIDecodeBin*)(dec))->lock)) typedef struct _GstURIDecodeBinStream { gulong probe_id; guint bitrate; } GstURIDecodeBinStream; /** * 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; guint64 connection_speed; GstCaps *caps; gchar *encoding; gboolean is_stream; gboolean is_adaptive; gboolean need_queue; guint64 buffer_duration; /* When buffering, buffer duration (ns) */ guint buffer_size; /* When buffering, buffer size (bytes) */ gboolean download; gboolean use_buffering; gboolean force_sw_decoders; GstElement *source; GstElement *queue; GstElement *typefind; guint have_type_id; /* have-type signal id from typefind */ /* without holding ref */ GSList *decodebins; /* Holding strong reference to decodebin */ GSList *pending_decodebins; GHashTable *streams; guint 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; GList *missing_plugin_errors; gboolean async_pending; /* async-start has been emitted */ gboolean expose_allstreams; /* Whether to expose unknown type streams or not */ guint64 ring_buffer_max_size; /* 0 means disabled */ gboolean post_stream_topology; }; 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); /* signal fired when a autoplugged element that is not linked downstream * or exposed wants to query something */ gboolean (*autoplug_query) (GstElement * element, GstPad * pad, GstQuery * query); /* emitted when all data is decoded */ void (*drained) (GstElement * element); }; static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src_%u", 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_AUTOPLUG_SORT, SIGNAL_AUTOPLUG_QUERY, SIGNAL_DRAINED, 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_FORCE_SW_DECODERS FALSE #define DEFAULT_EXPOSE_ALL_STREAMS TRUE #define DEFAULT_RING_BUFFER_MAX_SIZE 0 #define DEFAULT_POST_STREAM_TOPOLOGY FALSE 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_FORCE_SW_DECODERS, PROP_EXPOSE_ALL_STREAMS, PROP_RING_BUFFER_MAX_SIZE, PROP_POST_STREAM_TOPOLOGY }; static guint gst_uri_decode_bin_signals[LAST_SIGNAL] = { 0 }; GType gst_uri_decode_bin_get_type (void); #define gst_uri_decode_bin_parent_class parent_class G_DEFINE_TYPE (GstURIDecodeBin, gst_uri_decode_bin, GST_TYPE_BIN); #define _do_init \ GST_DEBUG_CATEGORY_INIT (gst_uri_decode_bin_debug, "uridecodebin", 0, "URI decoder element"); \ playback_element_init (plugin); GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (uridecodebin, "uridecodebin", GST_RANK_NONE, GST_TYPE_URI_DECODE_BIN, _do_init); 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 gboolean _gst_boolean_accumulator (GSignalInvocationHint * ihint, GValue * return_accu, const GValue * handler_return, gpointer dummy) { gboolean myboolean; myboolean = g_value_get_boolean (handler_return); g_value_set_boolean (return_accu, myboolean); /* stop emission if FALSE */ return myboolean; } static gboolean _gst_boolean_or_accumulator (GSignalInvocationHint * ihint, GValue * return_accu, const GValue * handler_return, gpointer dummy) { gboolean myboolean; gboolean retboolean; myboolean = g_value_get_boolean (handler_return); retboolean = g_value_get_boolean (return_accu); g_value_set_boolean (return_accu, myboolean || retboolean); return TRUE; } 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); 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); g_value_set_enum (return_accu, res); /* Call the next handler in the chain (if any) when the current callback * returns TRY. This makes it possible to register separate autoplug-select * handlers that implement different TRY/EXPOSE/SKIP strategies. */ if (res == GST_AUTOPLUG_SELECT_TRY) return TRUE; 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); 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) { guint32 cookie; GList *factories, *tmp; cookie = gst_registry_get_feature_list_cookie (gst_registry_get ()); if (!dec->factories || dec->factories_cookie != cookie) { if (dec->factories) gst_plugin_feature_list_free (dec->factories); factories = gst_element_factory_list_get_elements (GST_ELEMENT_FACTORY_TYPE_DECODABLE, GST_RANK_MARGINAL); if (dec->force_sw_decoders) { /* filter out Hardware class elements */ dec->factories = NULL; for (tmp = factories; tmp; tmp = g_list_next (tmp)) { GstElementFactory *factory = GST_ELEMENT_FACTORY_CAST (tmp->data); if (!gst_element_factory_list_is_type (factory, GST_ELEMENT_FACTORY_TYPE_HARDWARE)) { dec->factories = g_list_prepend (dec->factories, factory); } else { gst_object_unref (factory); } } g_list_free (factories); } else { dec->factories = factories; } dec->factories = g_list_sort (dec->factories, gst_playback_utils_compare_factories_func); dec->factories_cookie = 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, gst_caps_is_fixed (caps)); 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 gboolean gst_uri_decode_bin_autoplug_query (GstElement * element, GstPad * pad, GstQuery * query) { /* No query handled here */ return FALSE; } 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_uint64 ("connection-speed", "Connection Speed", "Network connection speed in kbps (0 = unknown)", 0, G_MAXUINT64 / 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. */ 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:force-sw-decoders: * * While auto-plugging, if set to %TRUE, those decoders within * "Hardware" klass will be ignored. Otherwise they will be tried. * * Since: 1.18 */ g_object_class_install_property (gobject_class, PROP_FORCE_SW_DECODERS, g_param_spec_boolean ("force-sw-decoders", "Software Docoders Only", "Use only sofware decoders to process streams", DEFAULT_FORCE_SW_DECODERS, 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. */ 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. */ 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:post-stream-topology * * Post stream-topology messages on the bus every time the topology changes. * * Since: 1.22 */ g_object_class_install_property (gobject_class, PROP_POST_STREAM_TOPOLOGY, g_param_spec_boolean ("post-stream-topology", "Post Stream Topology", "Post stream-topology messages", DEFAULT_POST_STREAM_TOPOLOGY, 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, NULL, 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. * * > Invocation of signal handlers stops after the first signal handler * > returns %FALSE. Signal handlers are invoked in the order they were * > connected in. * * 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 'pad-added' signal of * #GstElement). */ 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, NULL, 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 emitted 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. * * > 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! * * 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, NULL, 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 decodebin has found the possible #GstElementFactory objects to try * for @caps on @pad, this signal is emitted. 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. * * > 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! * * Returns: A new sorted array of #GstElementFactory objects. */ 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, NULL, G_TYPE_VALUE_ARRAY, 3, GST_TYPE_PAD, GST_TYPE_CAPS, G_TYPE_VALUE_ARRAY | G_SIGNAL_TYPE_STATIC_SCOPE); /** * 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 emitted. * * The signal handler should return a #GstAutoplugSelectResult enum * value indicating what decodebin should do next. * * A value of #GstAutoplugSelectResult::try will try to autoplug an element from * @factory. * * A value of #GstAutoplugSelectResult::expose will expose @pad without plugging * any element to it. * * A value of #GstAutoplugSelectResult::skip will skip @factory and move to the * next factory. * * > The signal handler will not be invoked if any of the previously * > registered signal handlers (if any) return a value other than * > GST_AUTOPLUG_SELECT_TRY. Which also means that if you return * > GST_AUTOPLUG_SELECT_TRY from one signal handler, handlers that get * > registered next (again, if any) can override that decision. * * Returns: a #GstAutoplugSelectResult that indicates the required * operation. The default handler will always return * #GstAutoplugSelectResult::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, NULL, GST_TYPE_AUTOPLUG_SELECT_RESULT, 3, GST_TYPE_PAD, GST_TYPE_CAPS, GST_TYPE_ELEMENT_FACTORY); /** * GstDecodeBin::autoplug-query: * @bin: The decodebin. * @child: The child element doing the query * @pad: The #GstPad. * @query: The #GstQuery. * * This signal is emitted whenever an autoplugged element that is * not linked downstream yet and not exposed does a query. It can * be used to tell the element about the downstream supported caps * for example. * * Returns: %TRUE if the query was handled, %FALSE otherwise. */ gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_QUERY] = g_signal_new ("autoplug-query", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURIDecodeBinClass, autoplug_query), _gst_boolean_or_accumulator, NULL, NULL, G_TYPE_BOOLEAN, 3, GST_TYPE_PAD, GST_TYPE_ELEMENT, GST_TYPE_QUERY | G_SIGNAL_TYPE_STATIC_SCOPE); /** * 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, NULL, 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. */ 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, NULL, G_TYPE_NONE, 1, GST_TYPE_ELEMENT); gst_element_class_add_static_pad_template (gstelement_class, &srctemplate); gst_element_class_set_static_metadata (gstelement_class, "URI Decoder", "Generic/Bin/Decoder", "Autoplug and decode an URI to raw media", "Wim Taymans "); 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); klass->autoplug_query = GST_DEBUG_FUNCPTR (gst_uri_decode_bin_autoplug_query); } static void gst_uri_decode_bin_init (GstURIDecodeBin * dec) { /* first filter out the interesting element factories */ g_mutex_init (&dec->factories_lock); g_mutex_init (&dec->lock); 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->force_sw_decoders = DEFAULT_FORCE_SW_DECODERS; dec->expose_allstreams = DEFAULT_EXPOSE_ALL_STREAMS; dec->ring_buffer_max_size = DEFAULT_RING_BUFFER_MAX_SIZE; GST_OBJECT_FLAG_SET (dec, GST_ELEMENT_FLAG_SOURCE); gst_bin_set_suppressed_flags (GST_BIN (dec), GST_ELEMENT_FLAG_SOURCE | GST_ELEMENT_FLAG_SINK); } static void gst_uri_decode_bin_finalize (GObject * obj) { GstURIDecodeBin *dec = GST_URI_DECODE_BIN (obj); remove_decoders (dec, TRUE); g_mutex_clear (&dec->lock); g_mutex_clear (&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_uint64 (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_FORCE_SW_DECODERS: dec->force_sw_decoders = 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; case PROP_POST_STREAM_TOPOLOGY: dec->post_stream_topology = g_value_get_boolean (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_uint64 (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_FORCE_SW_DECODERS: g_value_set_boolean (value, dec->force_sw_decoders); 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; case PROP_POST_STREAM_TOPOLOGY: g_value_set_boolean (value, dec->post_stream_topology); 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)); GST_BIN_CLASS (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), GST_CLOCK_TIME_NONE); GST_BIN_CLASS (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) { /* If we got not a single stream yet, that means that all * decodebins had missing plugins for all of their streams! */ if (!decoder->streams || g_hash_table_size (decoder->streams) == 0) { if (decoder->missing_plugin_errors) { GString *str = g_string_new (""); GList *l; for (l = decoder->missing_plugin_errors; l; l = l->next) { GstMessage *msg = l->data; gchar *debug; gst_message_parse_error (msg, NULL, &debug); g_string_append (str, debug); g_free (debug); gst_message_unref (msg); } g_list_free (decoder->missing_plugin_errors); decoder->missing_plugin_errors = NULL; GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (NULL), ("no suitable plugins found:\n%s", str->str)); g_string_free (str, TRUE); } else { GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (NULL), ("no suitable plugins found")); } } else { gst_element_no_more_pads (GST_ELEMENT_CAST (decoder)); } do_async_done (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); } static void configure_stream_buffering (GstURIDecodeBin * decoder) { GstElement *queue = NULL; GHashTableIter iter; gpointer key, value; gint bitrate = 0; /* automatic configuration enabled ? */ if (decoder->buffer_size != -1) return; GST_URI_DECODE_BIN_LOCK (decoder); if (decoder->queue) queue = gst_object_ref (decoder->queue); g_hash_table_iter_init (&iter, decoder->streams); while (g_hash_table_iter_next (&iter, &key, &value)) { GstURIDecodeBinStream *stream = value; if (stream->bitrate && bitrate >= 0) bitrate += stream->bitrate; else bitrate = -1; } GST_URI_DECODE_BIN_UNLOCK (decoder); GST_DEBUG_OBJECT (decoder, "overall bitrate %d", bitrate); if (!queue) return; if (bitrate > 0) { guint64 time; guint bytes; /* all streams have a bitrate; * configure queue size based on queue duration using combined bitrate */ g_object_get (queue, "max-size-time", &time, NULL); GST_DEBUG_OBJECT (decoder, "queue buffering time %" GST_TIME_FORMAT, GST_TIME_ARGS (time)); if (time > 0) { bytes = gst_util_uint64_scale (time, bitrate, 8 * GST_SECOND); GST_DEBUG_OBJECT (decoder, "corresponds to buffer size %d", bytes); g_object_set (queue, "max-size-bytes", bytes, NULL); } } gst_object_unref (queue); } static GstPadProbeReturn decoded_pad_event_probe (GstPad * pad, GstPadProbeInfo * info, gpointer user_data) { GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info); GstURIDecodeBin *decoder = user_data; GST_LOG_OBJECT (pad, "%s, decoder %p", GST_EVENT_TYPE_NAME (event), decoder); /* look for a bitrate tag */ switch (GST_EVENT_TYPE (event)) { case GST_EVENT_TAG: { GstTagList *list; guint bitrate = 0; GstURIDecodeBinStream *stream; gst_event_parse_tag (event, &list); if (!gst_tag_list_get_uint_index (list, GST_TAG_NOMINAL_BITRATE, 0, &bitrate)) { gst_tag_list_get_uint_index (list, GST_TAG_BITRATE, 0, &bitrate); } GST_DEBUG_OBJECT (pad, "found bitrate %u", bitrate); if (bitrate) { GST_URI_DECODE_BIN_LOCK (decoder); stream = g_hash_table_lookup (decoder->streams, pad); GST_URI_DECODE_BIN_UNLOCK (decoder); if (stream) { stream->bitrate = bitrate; /* no longer need this probe now */ gst_pad_remove_probe (pad, stream->probe_id); /* configure buffer if possible */ configure_stream_buffering (decoder); } } break; } default: break; } /* never drop */ return GST_PAD_PROBE_OK; } static gboolean copy_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data) { GstPad *gpad = GST_PAD_CAST (user_data); GST_DEBUG_OBJECT (gpad, "store sticky event %" GST_PTR_FORMAT, *event); gst_pad_store_sticky_event (gpad, *event); return TRUE; } /* Called by the signal handlers when a decodebin has found a new raw pad */ static void new_decoded_pad_added_cb (GstElement * element, GstPad * pad, GstURIDecodeBin * decoder) { GstPad *newpad; GstPadTemplate *pad_tmpl; gchar *padname; GstURIDecodeBinStream *stream; GST_DEBUG_OBJECT (element, "new decoded pad, name: <%s>", GST_PAD_NAME (pad)); GST_URI_DECODE_BIN_LOCK (decoder); padname = g_strdup_printf ("src_%u", 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); /* add event probe to monitor tags */ stream = g_slice_alloc0 (sizeof (GstURIDecodeBinStream)); stream->probe_id = gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, decoded_pad_event_probe, decoder, NULL); GST_URI_DECODE_BIN_LOCK (decoder); g_hash_table_insert (decoder->streams, pad, stream); GST_URI_DECODE_BIN_UNLOCK (decoder); gst_pad_set_active (newpad, TRUE); gst_pad_sticky_events_foreach (pad, copy_sticky_events, newpad); gst_element_add_pad (GST_ELEMENT_CAST (decoder), newpad); } static GstPadProbeReturn source_pad_event_probe (GstPad * pad, GstPadProbeInfo * info, gpointer user_data) { GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info); GstURIDecodeBin *decoder = user_data; 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 GST_PAD_PROBE_OK; } /* 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_probe (pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, source_pad_event_probe, decoder, NULL); new_decoded_pad_added_cb (element, pad, 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 }; /* media types that use adaptive streaming */ static const gchar *adaptive_media[] = { "application/x-hls", "application/vnd.ms-sstr+xml", "application/dash+xml", 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_ADAPTIVE_MEDIA(media) (array_has_value (adaptive_media, media)) /* * Generate and configure a source element. * * Returns: (transfer full): a new #GstElement */ static GstElement * gen_source_element (GstURIDecodeBin * decoder) { GObjectClass *source_class; GstElement *source; GParamSpec *pspec; GstQuery *query; GstSchedulingFlags flags; GError *err = NULL; 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", &err); if (!source) goto no_source; GST_LOG_OBJECT (decoder, "found source type %s", G_OBJECT_TYPE_NAME (source)); source_class = G_OBJECT_GET_CLASS (source); pspec = g_object_class_find_property (source_class, "connection-speed"); if (pspec != NULL) { guint64 speed = decoder->connection_speed / 1000; gboolean wrong_type = FALSE; if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_UINT) { GParamSpecUInt *pspecuint = G_PARAM_SPEC_UINT (pspec); speed = CLAMP (speed, pspecuint->minimum, pspecuint->maximum); } else if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_INT) { GParamSpecInt *pspecint = G_PARAM_SPEC_INT (pspec); speed = CLAMP (speed, pspecint->minimum, pspecint->maximum); } else if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_UINT64) { GParamSpecUInt64 *pspecuint = G_PARAM_SPEC_UINT64 (pspec); speed = CLAMP (speed, pspecuint->minimum, pspecuint->maximum); } else if (G_PARAM_SPEC_TYPE (pspec) == G_TYPE_PARAM_INT64) { GParamSpecInt64 *pspecint = G_PARAM_SPEC_INT64 (pspec); speed = CLAMP (speed, pspecint->minimum, pspecint->maximum); } else { GST_WARNING_OBJECT (decoder, "The connection speed property %" G_GUINT64_FORMAT " of type %s is not useful not setting it", speed, g_type_name (G_PARAM_SPEC_TYPE (pspec))); wrong_type = TRUE; } if (!wrong_type) { g_object_set (source, "connection-speed", speed, NULL); GST_DEBUG_OBJECT (decoder, "setting connection-speed=%" G_GUINT64_FORMAT " to source element", speed); } } pspec = g_object_class_find_property (source_class, "subtitle-encoding"); if (pspec != NULL && G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_STRING) { GST_DEBUG_OBJECT (decoder, "setting subtitle-encoding=%s to source element", decoder->encoding); g_object_set (source, "subtitle-encoding", decoder->encoding, NULL); } /* Sink reference before passing it to signal handler. * Language binding might otherwise sink it and then unref. * A floating ref is also tricky for a native signal handler in case * of a "transfer floating" call followed by unref * (e.g. some container_add and then container_remove). * Bottom line; best not have a floating ref boldly going into unknown code. */ g_object_ref_sink (source); g_signal_emit (decoder, gst_uri_decode_bin_signals[SIGNAL_SOURCE_SETUP], 0, source); decoder->is_stream = IS_STREAM_URI (decoder->uri); query = gst_query_new_scheduling (); if (gst_element_query (source, query)) { gst_query_parse_scheduling (query, &flags, NULL, NULL, NULL); if ((flags & GST_SCHEDULING_FLAG_BANDWIDTH_LIMITED)) decoder->is_stream = TRUE; } gst_query_unref (query); 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); 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)); g_clear_error (&err); return NULL; } uri_blacklisted: { GST_ELEMENT_ERROR (decoder, RESOURCE, FAILED, (_("This stream type cannot be played yet.")), (NULL)); return NULL; } no_source: { /* whoops, could not create the source element, dig a little deeper to * figure out what might be wrong. */ if (err != NULL && err->code == GST_URI_ERROR_UNSUPPORTED_PROTOCOL) { gchar *prot; prot = gst_uri_get_protocol (decoder->uri); if (prot == NULL) goto invalid_uri; gst_element_post_message (GST_ELEMENT_CAST (decoder), gst_missing_uri_source_message_new (GST_ELEMENT (decoder), prot)); GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (_("No URI handler implemented for \"%s\"."), prot), (NULL)); g_free (prot); } else { GST_ELEMENT_ERROR (decoder, RESOURCE, NOT_FOUND, ("%s", (err) ? err->message : "URI was not accepted by any element"), ("No element accepted URI '%s'", decoder->uri)); } g_clear_error (&err); return NULL; } } /** * has_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 caps are not set and raw */ static gboolean has_raw_caps (GstPad * pad, GstCaps * rawcaps) { GstCaps *caps, *intersection; gint capssize; gboolean res = FALSE; caps = gst_pad_get_current_caps (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); res = !gst_caps_is_empty (intersection); gst_caps_unref (intersection); 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)); do_async_done (GST_URI_DECODE_BIN (dec)); } /** * 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 occurred 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; GValue item = { 0, }; *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, &item)) { case GST_ITERATOR_ERROR: res = FALSE; /* FALLTHROUGH */ 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: pad = g_value_dup_object (&item); /* we now officially have an output pad */ *have_out = TRUE; /* if FALSE, this pad has no caps and we continue with the next pad. */ if (!has_raw_caps (pad, rawcaps)) { gst_object_unref (pad); g_value_reset (&item); break; } else { /* caps on source pad are all raw, we can add the pad */ GstElement *outelem; *is_raw = TRUE; 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); /* save queue pointer so we can remove it later */ decoder->queue = outelem; /* get the new raw srcpad */ gst_object_unref (pad); pad = gst_element_get_static_pad (outelem, "src"); } else { outelem = decoder->source; } expose_decoded_pad (outelem, pad, decoder); } gst_object_unref (pad); g_value_reset (&item); break; } } g_value_unset (&item); 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); g_value_unset (&item); gst_iterator_free (pads_iter); gst_caps_unref (rawcaps); return FALSE; } } /* Remove all decodebin from ourself * If force is FALSE, then the decodebin instances will be stored in * pending_decodebins for re-use later on. * If force is TRUE, then all decodebin 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"); /* Even if we reuse this decodebin, the previous topology will * be irrelevant */ g_object_set_data (G_OBJECT (decoder), "uridecodebin-topology", NULL); 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 */ gst_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; } } static void proxy_unknown_type_signal (GstElement * decodebin, 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 * decodebin, 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 * decodebin, 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 * decodebin, 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 * decodebin, 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 gboolean proxy_autoplug_query_signal (GstElement * decodebin, GstPad * pad, GstElement * element, GstQuery * query, GstURIDecodeBin * dec) { gboolean ret = FALSE; g_signal_emit (dec, gst_uri_decode_bin_signals[SIGNAL_AUTOPLUG_QUERY], 0, pad, element, query, &ret); GST_DEBUG_OBJECT (dec, "autoplug-query returned %d", ret); return ret; } static void proxy_drained_signal (GstElement * decodebin, 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; gboolean unref_dbin = FALSE; /* re-use pending decodebin */ if (decoder->pending_decodebins) { GSList *first = decoder->pending_decodebins; GST_LOG_OBJECT (decoder, "re-using pending decodebin"); decodebin = (GstElement *) first->data; decoder->pending_decodebins = g_slist_delete_link (decoder->pending_decodebins, first); unref_dbin = TRUE; } else { GST_LOG_OBJECT (decoder, "making new decodebin"); /* now create the decoder element */ decodebin = gst_element_factory_make ("decodebin", 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, "autoplug-query", G_CALLBACK (proxy_autoplug_query_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, "pad-added", G_CALLBACK (new_decoded_pad_added_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); } g_object_set (decodebin, "force-sw-decoders", decoder->force_sw_decoders, NULL); /* configure caps if we have any */ if (decoder->caps) g_object_set (decodebin, "caps", decoder->caps, NULL); /* Propagate expose-all-streams, connection-speed properties * and post_stream_topology */ g_object_set (decodebin, "expose-all-streams", decoder->expose_allstreams, "connection-speed", decoder->connection_speed / 1000, "post-stream-topology", decoder->post_stream_topology, NULL); if (!decoder->is_stream || decoder->is_adaptive) { /* 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 || decoder->is_adaptive, NULL); if (decoder->use_buffering || decoder->is_adaptive) { 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 = 5 * 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); /* Unref if this decodebin came from our pending_decodebins, * since we were holding strong reference to decodebin and gst_bin_add() * will increase refcount */ if (unref_dbin) gst_object_unref (decodebin); return decodebin; /* ERRORS */ no_decodebin: { post_missing_plugin_error (GST_ELEMENT_CAST (decoder), "decodebin"); GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (NULL), ("No decodebin element, check your installation")); do_async_done (decoder); return NULL; } no_typefind: { gst_object_unref (decodebin); GST_ELEMENT_ERROR (decoder, CORE, MISSING_PLUGIN, (NULL), ("No typefind element, decodebin is unusable, check your installation")); do_async_done (decoder); 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 *src_elem, *dec_elem, *queue = NULL; GstStructure *s; const gchar *media_type, *elem_name; gboolean do_download = FALSE; 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); decoder->is_adaptive = IS_ADAPTIVE_MEDIA (media_type); /* only enable download buffering if the upstream duration is known */ if (decoder->download) { gint64 dur; do_download = (gst_element_query_duration (typefind, GST_FORMAT_BYTES, &dur) && dur != -1); } dec_elem = make_decoder (decoder); if (!dec_elem) goto no_decodebin; if (decoder->is_adaptive) { src_elem = typefind; } else { if (do_download) { elem_name = "downloadbuffer"; } else { elem_name = "queue2"; } queue = gst_element_factory_make (elem_name, NULL); if (!queue) goto no_buffer_element; decoder->queue = queue; GST_DEBUG_OBJECT (decoder, "check media-type %s, %d", media_type, do_download); if (do_download) { gchar *temp_template, *filename; const gchar *tmp_dir, *prgname; tmp_dir = g_get_user_cache_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); } else { g_object_set (queue, "use-buffering", TRUE, NULL); g_object_set (queue, "ring-buffer-max-size", decoder->ring_buffer_max_size, NULL); /* Disable max-size-buffers */ g_object_set (queue, "max-size-buffers", 0, NULL); } /* If buffer size or duration are set, set them on the 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; src_elem = queue; } /* 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 (src_elem, "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_sync_state_with_parent (dec_elem); if (queue) gst_element_sync_state_with_parent (queue); return; /* ERRORS */ no_decodebin: { /* error was posted */ return; } could_not_link: { GST_ELEMENT_ERROR (decoder, CORE, NEGOTIATION, (NULL), ("Can't link typefind to decodebin element")); do_async_done (decoder); return; } no_buffer_element: { post_missing_plugin_error (GST_ELEMENT_CAST (decoder), elem_name); 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 decodebin 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); 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")); do_async_done (decoder); 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); do_async_done (decoder); return FALSE; } } static void free_stream (gpointer value) { g_slice_free (GstURIDecodeBinStream, value); } /* 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_OBJECT_LOCK (bin); bin->source = NULL; GST_OBJECT_UNLOCK (bin); gst_bin_remove (GST_BIN_CAST (bin), source); } 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; } if (bin->streams) { g_hash_table_destroy (bin->streams); bin->streams = NULL; } } /* is called when a dynamic source element created a new pad. */ static void source_new_pad (GstElement * element, GstPad * pad, GstURIDecodeBin * bin) { GstElement *decoder; GstCaps *rawcaps; GstPad *sinkpad; 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. * But if stream-topology needs to be posted, we need to * plug a decodebin so it can build the topology for us to forward. */ if (!bin->post_stream_topology && has_raw_caps (pad, rawcaps)) { /* 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 */ sinkpad = gst_element_get_static_pad (decoder, "sink"); if (gst_pad_link (pad, sinkpad) != GST_PAD_LINK_OK) goto could_not_link; gst_object_unref (sinkpad); GST_DEBUG_OBJECT (bin, "linked decoder to new source pad"); gst_element_sync_state_with_parent (decoder); GST_URI_DECODE_BIN_UNLOCK (bin); return; /* ERRORS */ no_decodebin: { /* error was posted */ GST_URI_DECODE_BIN_UNLOCK (bin); return; } could_not_link: { gst_object_unref (sinkpad); GST_ELEMENT_ERROR (bin, CORE, NEGOTIATION, (NULL), ("Can't link source to decoder element")); GST_URI_DECODE_BIN_UNLOCK (bin); do_async_done (bin); return; } } static gboolean is_live_source (GstElement * source) { GObjectClass *source_class = NULL; gboolean is_live = FALSE; GParamSpec *pspec; source_class = G_OBJECT_GET_CLASS (source); pspec = g_object_class_find_property (source_class, "is-live"); if (!pspec || G_PARAM_SPEC_VALUE_TYPE (pspec) != G_TYPE_BOOLEAN) return FALSE; g_object_get (G_OBJECT (source), "is-live", &is_live, NULL); return is_live; } /* 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; GstElement *source; 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 */ source = gen_source_element (decoder); GST_OBJECT_LOCK (decoder); if (!(decoder->source = source)) { GST_OBJECT_UNLOCK (decoder); goto no_source; } GST_OBJECT_UNLOCK (decoder); /* 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); /* bin now has a ref, but the local reference is not counted */ g_object_unref (decoder->source); /* notify of the new source used */ g_object_notify (G_OBJECT (decoder), "source"); if (is_live_source (decoder->source)) decoder->is_stream = FALSE; /* remove the old decoders now, if any */ remove_decoders (decoder, FALSE); /* stream admin setup */ decoder->streams = g_hash_table_new_full (NULL, NULL, NULL, free_stream); if (gst_element_set_state (source, GST_STATE_READY) != GST_STATE_CHANGE_SUCCESS) goto state_fail; /* 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)); do_async_done (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; } state_fail: { GST_ELEMENT_ERROR (decoder, CORE, FAILED, (_("Source element can't be prepared")), (NULL)); 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; const GstStructure *structure; GST_DEBUG_OBJECT (dec, "redirect message: %" GST_PTR_FORMAT, msg); GST_DEBUG_OBJECT (dec, "connection speed: %" G_GUINT64_FORMAT, dec->connection_speed); structure = gst_message_get_structure (msg); if (dec->connection_speed == 0 || structure == NULL) return msg; locations_list = gst_structure_get_value (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_take_value (new_structure, "locations", &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 GstMessage * make_topology_message (GstURIDecodeBin * dec) { GSList *tmp; GstStructure *aggregated_topology = NULL; GValue list = G_VALUE_INIT; GstCaps *caps = NULL; gchar *name, *proto; aggregated_topology = gst_structure_new_empty ("stream-topology"); g_value_init (&list, GST_TYPE_LIST); for (tmp = dec->decodebins; tmp; tmp = tmp->next) { GValue item = G_VALUE_INIT; GstStructure *dec_topology = g_object_get_data (G_OBJECT (tmp->data), "uridecodebin-topology"); g_value_init (&item, GST_TYPE_STRUCTURE); gst_value_set_structure (&item, dec_topology); gst_value_list_append_and_take_value (&list, &item); } gst_structure_take_value (aggregated_topology, "next", &list); /* This is a bit wacky, but that's the best way I can find to express * uridecodebin 'caps' as subsequently shown by gst-discoverer */ proto = gst_uri_get_protocol (dec->uri); name = g_strdup_printf ("application/%s", proto); g_free (proto); caps = gst_caps_new_empty_simple (name); g_free (name); gst_structure_set (aggregated_topology, "caps", GST_TYPE_CAPS, caps, NULL); gst_caps_unref (caps); return gst_message_new_element (GST_OBJECT (dec), aggregated_topology); } static void check_topology (gpointer data, gpointer user_data) { gboolean *has_topo = user_data; if (g_object_get_data (data, "uridecodebin-topology") == NULL) *has_topo = FALSE; } static void handle_message (GstBin * bin, GstMessage * msg) { GstURIDecodeBin *dec = GST_URI_DECODE_BIN (bin); switch (GST_MESSAGE_TYPE (msg)) { case GST_MESSAGE_ELEMENT:{ if (gst_message_has_name (msg, "stream-topology")) { GstElement *element = GST_ELEMENT (GST_MESSAGE_SRC (msg)); gboolean has_all_topo = TRUE; if (dec->pending || (dec->decodebins && dec->decodebins->next != NULL)) { const GstStructure *structure; /* If there is only one, just let it through, so this case is if * there is more than one. */ structure = gst_message_get_structure (msg); g_object_set_data_full (G_OBJECT (element), "uridecodebin-topology", gst_structure_copy (structure), (GDestroyNotify) gst_structure_free); gst_message_unref (msg); msg = NULL; g_slist_foreach (dec->decodebins, check_topology, &has_all_topo); if (has_all_topo) msg = make_topology_message (dec); } } else if (gst_message_has_name (msg, "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 (dec, msg); } break; } case GST_MESSAGE_ERROR:{ GError *err = NULL; /* Filter out missing plugin error messages from the decodebins. Only if * all decodebins exposed no streams we will report a missing plugin * error from no_more_pads_full() */ gst_message_parse_error (msg, &err, NULL); if (g_error_matches (err, GST_CORE_ERROR, GST_CORE_ERROR_MISSING_PLUGIN) || g_error_matches (err, GST_STREAM_ERROR, GST_STREAM_ERROR_CODEC_NOT_FOUND)) { dec->missing_plugin_errors = g_list_prepend (dec->missing_plugin_errors, gst_message_ref (msg)); no_more_pads_full (GST_ELEMENT (GST_MESSAGE_SRC (msg)), FALSE, GST_URI_DECODE_BIN (bin)); gst_message_unref (msg); msg = NULL; } g_clear_error (&err); break; } default: break; } if (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 (const GValue * item, GValue * ret, QueryFold * fold) { GstPad *pad = g_value_get_object (item); if (gst_pad_query (pad, fold->query)) { gint64 duration; g_value_set_boolean (ret, TRUE); gst_query_parse_duration (fold->query, NULL, &duration); GST_DEBUG_OBJECT (pad, "got duration %" G_GINT64_FORMAT, duration); if (duration > fold->max) fold->max = duration; } 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 (const GValue * item, GValue * ret, QueryFold * fold) { GstPad *pad = g_value_get_object (item); if (gst_pad_query (pad, fold->query)) { gint64 position; g_value_set_boolean (ret, TRUE); gst_query_parse_position (fold->query, NULL, &position); GST_DEBUG_OBJECT (pad, "got position %" G_GINT64_FORMAT, position); if (position > fold->max) fold->max = position; } 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 (const GValue * item, GValue * ret, QueryFold * fold) { GstPad *pad = g_value_get_object (item); if (gst_pad_query (pad, fold->query)) { GstClockTime min, max; gboolean live; gst_query_parse_latency (fold->query, &live, &min, &max); GST_DEBUG_OBJECT (pad, "got latency min %" GST_TIME_FORMAT ", max %" GST_TIME_FORMAT ", live %d", GST_TIME_ARGS (min), GST_TIME_ARGS (max), live); if (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; fold->live = TRUE; } } else { GST_LOG_OBJECT (pad, "latency query failed"); g_value_set_boolean (ret, FALSE); } 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 (const GValue * item, GValue * ret, QueryFold * fold) { GstPad *pad = g_value_get_object (item); if (gst_pad_query (pad, fold->query)) { gboolean seekable; g_value_set_boolean (ret, TRUE); gst_query_parse_seeking (fold->query, NULL, &seekable, NULL, NULL); GST_DEBUG_OBJECT (pad, "got seekable %d", seekable); if (fold->seekable) fold->seekable = seekable; } 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 (const GValue * item, GValue * ret, QueryFold * fold) { GstPad *pad = g_value_get_object (item); gboolean res; if ((res = gst_pad_query (pad, fold->query))) { g_value_set_boolean (ret, TRUE); GST_DEBUG_OBJECT (pad, "answered query %p", fold->query); } /* 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 }; gboolean default_ret = FALSE; 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; default_ret = TRUE; 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, default_ret); 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, default_ret); 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: do_async_start (decoder); break; default: break; } ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); if (ret == GST_STATE_CHANGE_FAILURE) goto setup_failed; switch (transition) { case GST_STATE_CHANGE_READY_TO_PAUSED: GST_DEBUG ("ready to paused"); if (!setup_source (decoder)) goto source_failed; ret = GST_STATE_CHANGE_ASYNC; /* And now sync the states of everything we added */ g_slist_foreach (decoder->decodebins, (GFunc) gst_element_sync_state_with_parent, NULL); if (decoder->typefind) ret = gst_element_set_state (decoder->typefind, GST_STATE_PAUSED); if (ret == GST_STATE_CHANGE_FAILURE) goto setup_failed; if (decoder->queue) ret = gst_element_set_state (decoder->queue, GST_STATE_PAUSED); if (ret == GST_STATE_CHANGE_FAILURE) goto setup_failed; if (decoder->source) ret = gst_element_set_state (decoder->source, GST_STATE_PAUSED); if (ret == GST_STATE_CHANGE_FAILURE) goto setup_failed; if (ret == GST_STATE_CHANGE_SUCCESS) ret = GST_STATE_CHANGE_ASYNC; break; case GST_STATE_CHANGE_PAUSED_TO_READY: GST_DEBUG ("paused to ready"); remove_decoders (decoder, FALSE); remove_source (decoder); do_async_done (decoder); g_list_free_full (decoder->missing_plugin_errors, (GDestroyNotify) gst_message_unref); decoder->missing_plugin_errors = NULL; break; case GST_STATE_CHANGE_READY_TO_NULL: GST_DEBUG ("ready to null"); remove_decoders (decoder, TRUE); remove_source (decoder); break; default: break; } if (ret == GST_STATE_CHANGE_NO_PREROLL) do_async_done (decoder); return ret; /* ERRORS */ source_failed: { do_async_done (decoder); return GST_STATE_CHANGE_FAILURE; } setup_failed: { /* clean up leftover groups */ do_async_done (decoder); return GST_STATE_CHANGE_FAILURE; } }