mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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fb6d09055a
Conflicts: ext/alsa/gstalsadeviceprobe.c ext/alsa/gstalsamixer.c ext/pango/gsttextoverlay.c ext/pango/gsttextoverlay.h gst-libs/gst/audio/gstaudiobasesink.c gst-libs/gst/audio/gstaudioringbuffer.c gst-libs/gst/audio/gstaudiosrc.c gst-libs/gst/video/Makefile.am gst-libs/gst/video/video.c gst/encoding/gststreamcombiner.c gst/encoding/gststreamsplitter.c gst/playback/gstplaybasebin.c gst/playback/gststreamsynchronizer.c gst/playback/gstsubtitleoverlay.c gst/playback/gsturidecodebin.c sys/xvimage/xvimagesink.c tests/examples/Makefile.am win32/common/libgstvideo.def Video overlay composition disabled for now, needs porting to buffer meta.
1588 lines
44 KiB
C
1588 lines
44 KiB
C
/* GStreamer
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* Copyright (C) 2009 Edward Hervey <edward.hervey@collabora.co.uk>
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* 2009 Nokia Corporation
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:gstdiscoverer
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* @short_description: Utility for discovering information on URIs.
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*
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* The #GstDiscoverer is a utility object which allows to get as much
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* information as possible from one or many URIs.
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*
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* It provides two APIs, allowing usage in blocking or non-blocking mode.
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*
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* The blocking mode just requires calling gst_discoverer_discover_uri()
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* with the URI one wishes to discover.
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*
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* The non-blocking mode requires a running #GMainLoop in the default
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* #GMainContext, where one connects to the various signals, appends the
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* URIs to be processed (through gst_discoverer_discover_uri_async()) and then
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* asks for the discovery to begin (through gst_discoverer_start()).
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*
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* All the information is returned in a #GstDiscovererInfo structure.
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*
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* Since: 0.10.31
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/video/video.h>
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#include "pbutils.h"
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#include "pbutils-marshal.h"
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#include "pbutils-private.h"
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#include "gst/glib-compat-private.h"
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GST_DEBUG_CATEGORY_STATIC (discoverer_debug);
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#define GST_CAT_DEFAULT discoverer_debug
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static GQuark _CAPS_QUARK;
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static GQuark _TAGS_QUARK;
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static GQuark _MISSING_PLUGIN_QUARK;
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static GQuark _STREAM_TOPOLOGY_QUARK;
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static GQuark _TOPOLOGY_PAD_QUARK;
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typedef struct
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{
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GstDiscoverer *dc;
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GstPad *pad;
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GstElement *queue;
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GstElement *sink;
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GstTagList *tags;
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} PrivateStream;
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struct _GstDiscovererPrivate
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{
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gboolean async;
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/* allowed time to discover each uri in nanoseconds */
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GstClockTime timeout;
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/* list of pending URI to process (current excluded) */
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GList *pending_uris;
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GMutex *lock;
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/* TRUE if processing a URI */
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gboolean processing;
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/* TRUE if discoverer has been started */
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gboolean running;
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/* current items */
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GstDiscovererInfo *current_info;
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GError *current_error;
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GstStructure *current_topology;
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/* List of private streams */
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GList *streams;
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/* Global elements */
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GstBin *pipeline;
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GstElement *uridecodebin;
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GstBus *bus;
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GType decodebin_type;
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/* Custom main context variables */
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GMainContext *ctx;
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guint sourceid;
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guint timeoutid;
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/* reusable queries */
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GstQuery *seeking_query;
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/* Handler ids for various callbacks */
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gulong pad_added_id;
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gulong pad_remove_id;
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gulong element_added_id;
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gulong bus_cb_id;
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};
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#define DISCO_LOCK(dc) g_mutex_lock (dc->priv->lock);
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#define DISCO_UNLOCK(dc) g_mutex_unlock (dc->priv->lock);
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static void
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_do_init (void)
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{
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GST_DEBUG_CATEGORY_INIT (discoverer_debug, "discoverer", 0, "Discoverer");
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_CAPS_QUARK = g_quark_from_static_string ("caps");
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_TAGS_QUARK = g_quark_from_static_string ("tags");
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_MISSING_PLUGIN_QUARK = g_quark_from_static_string ("missing-plugin");
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_STREAM_TOPOLOGY_QUARK = g_quark_from_static_string ("stream-topology");
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_TOPOLOGY_PAD_QUARK = g_quark_from_static_string ("pad");
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};
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G_DEFINE_TYPE_EXTENDED (GstDiscoverer, gst_discoverer, G_TYPE_OBJECT, 0,
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_do_init ());
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enum
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{
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SIGNAL_FINISHED,
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SIGNAL_STARTING,
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SIGNAL_DISCOVERED,
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LAST_SIGNAL
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};
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#define DEFAULT_PROP_TIMEOUT 15 * GST_SECOND
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enum
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{
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PROP_0,
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PROP_TIMEOUT
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};
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static guint gst_discoverer_signals[LAST_SIGNAL] = { 0 };
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static void gst_discoverer_set_timeout (GstDiscoverer * dc,
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GstClockTime timeout);
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static gboolean async_timeout_cb (GstDiscoverer * dc);
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static void discoverer_bus_cb (GstBus * bus, GstMessage * msg,
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GstDiscoverer * dc);
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static void uridecodebin_pad_added_cb (GstElement * uridecodebin, GstPad * pad,
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GstDiscoverer * dc);
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static void uridecodebin_pad_removed_cb (GstElement * uridecodebin,
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GstPad * pad, GstDiscoverer * dc);
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static void gst_discoverer_dispose (GObject * dc);
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static void gst_discoverer_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_discoverer_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void
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gst_discoverer_class_init (GstDiscovererClass * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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gobject_class->dispose = gst_discoverer_dispose;
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gobject_class->set_property = gst_discoverer_set_property;
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gobject_class->get_property = gst_discoverer_get_property;
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g_type_class_add_private (klass, sizeof (GstDiscovererPrivate));
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/* properties */
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/**
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* GstDiscoverer:timeout
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*
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* The duration (in nanoseconds) after which the discovery of an individual
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* URI will timeout.
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*
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* If the discovery of a URI times out, the %GST_DISCOVERER_TIMEOUT will be
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* set on the result flags.
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*/
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g_object_class_install_property (gobject_class, PROP_TIMEOUT,
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g_param_spec_uint64 ("timeout", "timeout", "Timeout",
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GST_SECOND, 3600 * GST_SECOND, DEFAULT_PROP_TIMEOUT,
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G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
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/* signals */
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/**
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* GstDiscoverer::finished:
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* @discoverer: the #GstDiscoverer
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*
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* Will be emitted when all pending URIs have been processed.
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*/
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gst_discoverer_signals[SIGNAL_FINISHED] =
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g_signal_new ("finished", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstDiscovererClass, finished),
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NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
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/**
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* GstDiscoverer::starting:
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* @discoverer: the #GstDiscoverer
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*
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* Will be emitted when the discover starts analyzing the pending URIs
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*/
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gst_discoverer_signals[SIGNAL_STARTING] =
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g_signal_new ("starting", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstDiscovererClass, starting),
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NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0, G_TYPE_NONE);
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/**
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* GstDiscoverer::discovered:
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* @discoverer: the #GstDiscoverer
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* @info: the results #GstDiscovererInfo
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* @error: (type GLib.Error): #GError, which will be non-NULL if an error
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* occurred during discovery
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*
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* Will be emitted when all information on a URI could be discovered.
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*/
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gst_discoverer_signals[SIGNAL_DISCOVERED] =
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g_signal_new ("discovered", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST,
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G_STRUCT_OFFSET (GstDiscovererClass, discovered),
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NULL, NULL, pbutils_marshal_VOID__POINTER_BOXED,
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G_TYPE_NONE, 2, GST_TYPE_DISCOVERER_INFO, GST_TYPE_G_ERROR);
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}
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static void
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uridecodebin_element_added_cb (GstElement * uridecodebin,
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GstElement * child, GstDiscoverer * dc)
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{
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GST_DEBUG ("New element added to uridecodebin : %s",
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GST_ELEMENT_NAME (child));
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if (G_OBJECT_TYPE (child) == dc->priv->decodebin_type) {
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g_object_set (child, "post-stream-topology", TRUE, NULL);
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}
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}
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static void
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gst_discoverer_init (GstDiscoverer * dc)
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{
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GstElement *tmp;
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GstFormat format = GST_FORMAT_TIME;
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dc->priv = G_TYPE_INSTANCE_GET_PRIVATE (dc, GST_TYPE_DISCOVERER,
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GstDiscovererPrivate);
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dc->priv->timeout = DEFAULT_PROP_TIMEOUT;
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dc->priv->async = FALSE;
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dc->priv->lock = g_mutex_new ();
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GST_LOG ("Creating pipeline");
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dc->priv->pipeline = (GstBin *) gst_pipeline_new ("Discoverer");
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GST_LOG_OBJECT (dc, "Creating uridecodebin");
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dc->priv->uridecodebin =
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gst_element_factory_make ("uridecodebin", "discoverer-uri");
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if (G_UNLIKELY (dc->priv->uridecodebin == NULL)) {
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GST_ERROR ("Can't create uridecodebin");
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return;
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}
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GST_LOG_OBJECT (dc, "Adding uridecodebin to pipeline");
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gst_bin_add (dc->priv->pipeline, dc->priv->uridecodebin);
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dc->priv->pad_added_id =
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g_signal_connect_object (dc->priv->uridecodebin, "pad-added",
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G_CALLBACK (uridecodebin_pad_added_cb), dc, 0);
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dc->priv->pad_remove_id =
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g_signal_connect_object (dc->priv->uridecodebin, "pad-removed",
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G_CALLBACK (uridecodebin_pad_removed_cb), dc, 0);
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GST_LOG_OBJECT (dc, "Getting pipeline bus");
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dc->priv->bus = gst_pipeline_get_bus ((GstPipeline *) dc->priv->pipeline);
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dc->priv->bus_cb_id =
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g_signal_connect_object (dc->priv->bus, "message",
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G_CALLBACK (discoverer_bus_cb), dc, 0);
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GST_DEBUG_OBJECT (dc, "Done initializing Discoverer");
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/* This is ugly. We get the GType of decodebin so we can quickly detect
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* when a decodebin is added to uridecodebin so we can set the
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* post-stream-topology setting to TRUE */
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dc->priv->element_added_id =
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g_signal_connect_object (dc->priv->uridecodebin, "element-added",
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G_CALLBACK (uridecodebin_element_added_cb), dc, 0);
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tmp = gst_element_factory_make ("decodebin", NULL);
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dc->priv->decodebin_type = G_OBJECT_TYPE (tmp);
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gst_object_unref (tmp);
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/* create queries */
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dc->priv->seeking_query = gst_query_new_seeking (format);
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}
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static void
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discoverer_reset (GstDiscoverer * dc)
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{
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GST_DEBUG_OBJECT (dc, "Resetting");
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if (dc->priv->pending_uris) {
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g_list_foreach (dc->priv->pending_uris, (GFunc) g_free, NULL);
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g_list_free (dc->priv->pending_uris);
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dc->priv->pending_uris = NULL;
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}
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if (dc->priv->pipeline)
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gst_element_set_state ((GstElement *) dc->priv->pipeline, GST_STATE_NULL);
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}
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#define DISCONNECT_SIGNAL(o,i) G_STMT_START{ \
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if ((i) && g_signal_handler_is_connected ((o), (i))) \
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g_signal_handler_disconnect ((o), (i)); \
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(i) = 0; \
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}G_STMT_END
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static void
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gst_discoverer_dispose (GObject * obj)
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{
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GstDiscoverer *dc = (GstDiscoverer *) obj;
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GST_DEBUG_OBJECT (dc, "Disposing");
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discoverer_reset (dc);
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if (G_LIKELY (dc->priv->pipeline)) {
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/* Workaround for bug #118536 */
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DISCONNECT_SIGNAL (dc->priv->uridecodebin, dc->priv->pad_added_id);
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DISCONNECT_SIGNAL (dc->priv->uridecodebin, dc->priv->pad_remove_id);
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DISCONNECT_SIGNAL (dc->priv->uridecodebin, dc->priv->element_added_id);
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DISCONNECT_SIGNAL (dc->priv->bus, dc->priv->bus_cb_id);
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/* pipeline was set to NULL in _reset */
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gst_object_unref (dc->priv->pipeline);
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gst_object_unref (dc->priv->bus);
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dc->priv->pipeline = NULL;
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dc->priv->uridecodebin = NULL;
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dc->priv->bus = NULL;
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}
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gst_discoverer_stop (dc);
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if (dc->priv->lock) {
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g_mutex_free (dc->priv->lock);
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dc->priv->lock = NULL;
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}
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if (dc->priv->seeking_query) {
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gst_query_unref (dc->priv->seeking_query);
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dc->priv->seeking_query = NULL;
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}
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G_OBJECT_CLASS (gst_discoverer_parent_class)->dispose (obj);
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}
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static void
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gst_discoverer_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstDiscoverer *dc = (GstDiscoverer *) object;
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switch (prop_id) {
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case PROP_TIMEOUT:
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gst_discoverer_set_timeout (dc, g_value_get_uint64 (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_discoverer_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstDiscoverer *dc = (GstDiscoverer *) object;
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switch (prop_id) {
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case PROP_TIMEOUT:
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DISCO_LOCK (dc);
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g_value_set_uint64 (value, dc->priv->timeout);
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DISCO_UNLOCK (dc);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_discoverer_set_timeout (GstDiscoverer * dc, GstClockTime timeout)
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{
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GST_DEBUG_OBJECT (dc, "timeout : %" GST_TIME_FORMAT, GST_TIME_ARGS (timeout));
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/* FIXME : update current pending timeout if we're running */
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DISCO_LOCK (dc);
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dc->priv->timeout = timeout;
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DISCO_UNLOCK (dc);
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}
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static GstPadProbeReturn
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_event_probe (GstPad * pad, GstPadProbeInfo * info, PrivateStream * ps)
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{
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GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
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if (GST_EVENT_TYPE (event) == GST_EVENT_TAG) {
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GstTagList *tl = NULL, *tmp;
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gst_event_parse_tag (event, &tl);
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GST_DEBUG_OBJECT (pad, "tags %" GST_PTR_FORMAT, tl);
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DISCO_LOCK (ps->dc);
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/* If preroll is complete, drop these tags - the collected information is
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* possibly already being processed and adding more tags would be racy */
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if (G_LIKELY (ps->dc->priv->processing)) {
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GST_DEBUG_OBJECT (pad, "private stream %p old tags %" GST_PTR_FORMAT, ps,
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ps->tags);
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tmp = gst_tag_list_merge (ps->tags, tl, GST_TAG_MERGE_APPEND);
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if (ps->tags)
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gst_tag_list_free (ps->tags);
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ps->tags = tmp;
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GST_DEBUG_OBJECT (pad, "private stream %p new tags %" GST_PTR_FORMAT, ps,
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tmp);
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} else
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GST_DEBUG_OBJECT (pad, "Dropping tags since preroll is done");
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DISCO_UNLOCK (ps->dc);
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}
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return GST_PAD_PROBE_OK;
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}
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static gboolean
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is_subtitle_caps (const GstCaps * caps)
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{
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static GstCaps *subs_caps = NULL;
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if (!subs_caps) {
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subs_caps = gst_caps_from_string ("text/plain; text/x-pango-markup; "
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"subpicture/x-pgs; subpicture/x-dvb; application/x-subtitle-unknown; "
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"application/x-ssa; application/x-ass; subtitle/x-kate; "
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"application/x-kate; video/x-dvd-subpicture; ");
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}
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return gst_caps_can_intersect (caps, subs_caps);
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}
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static void
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uridecodebin_pad_added_cb (GstElement * uridecodebin, GstPad * pad,
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GstDiscoverer * dc)
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{
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PrivateStream *ps;
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GstPad *sinkpad = NULL;
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|
GstCaps *caps;
|
|
|
|
GST_DEBUG_OBJECT (dc, "pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
ps = g_slice_new0 (PrivateStream);
|
|
|
|
ps->dc = dc;
|
|
ps->pad = pad;
|
|
ps->queue = gst_element_factory_make ("queue", NULL);
|
|
ps->sink = gst_element_factory_make ("fakesink", NULL);
|
|
|
|
if (G_UNLIKELY (ps->queue == NULL || ps->sink == NULL))
|
|
goto error;
|
|
|
|
g_object_set (ps->sink, "silent", TRUE, NULL);
|
|
g_object_set (ps->queue, "max-size-buffers", 1, "silent", TRUE, NULL);
|
|
|
|
caps = gst_pad_query_caps (pad, NULL);
|
|
|
|
if (is_subtitle_caps (caps)) {
|
|
/* Subtitle streams are sparse and may not provide any information - don't
|
|
* wait for data to preroll */
|
|
g_object_set (ps->sink, "async", FALSE, NULL);
|
|
}
|
|
|
|
gst_caps_unref (caps);
|
|
|
|
gst_bin_add_many (dc->priv->pipeline, ps->queue, ps->sink, NULL);
|
|
|
|
if (!gst_element_link_pads_full (ps->queue, "src", ps->sink, "sink",
|
|
GST_PAD_LINK_CHECK_NOTHING))
|
|
goto error;
|
|
if (!gst_element_sync_state_with_parent (ps->sink))
|
|
goto error;
|
|
if (!gst_element_sync_state_with_parent (ps->queue))
|
|
goto error;
|
|
|
|
sinkpad = gst_element_get_static_pad (ps->queue, "sink");
|
|
if (sinkpad == NULL)
|
|
goto error;
|
|
if (gst_pad_link_full (pad, sinkpad,
|
|
GST_PAD_LINK_CHECK_NOTHING) != GST_PAD_LINK_OK)
|
|
goto error;
|
|
gst_object_unref (sinkpad);
|
|
|
|
/* Add an event probe */
|
|
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
|
|
(GstPadProbeCallback) _event_probe, ps, NULL);
|
|
|
|
DISCO_LOCK (dc);
|
|
dc->priv->streams = g_list_append (dc->priv->streams, ps);
|
|
DISCO_UNLOCK (dc);
|
|
|
|
GST_DEBUG_OBJECT (dc, "Done handling pad");
|
|
|
|
return;
|
|
|
|
error:
|
|
GST_ERROR_OBJECT (dc, "Error while handling pad");
|
|
if (sinkpad)
|
|
gst_object_unref (sinkpad);
|
|
if (ps->queue)
|
|
gst_object_unref (ps->queue);
|
|
if (ps->sink)
|
|
gst_object_unref (ps->sink);
|
|
g_slice_free (PrivateStream, ps);
|
|
return;
|
|
}
|
|
|
|
static void
|
|
uridecodebin_pad_removed_cb (GstElement * uridecodebin, GstPad * pad,
|
|
GstDiscoverer * dc)
|
|
{
|
|
GList *tmp;
|
|
PrivateStream *ps;
|
|
GstPad *sinkpad;
|
|
|
|
GST_DEBUG_OBJECT (dc, "pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
/* Find the PrivateStream */
|
|
DISCO_LOCK (dc);
|
|
for (tmp = dc->priv->streams; tmp; tmp = tmp->next) {
|
|
ps = (PrivateStream *) tmp->data;
|
|
if (ps->pad == pad)
|
|
break;
|
|
}
|
|
|
|
if (tmp == NULL) {
|
|
DISCO_UNLOCK (dc);
|
|
GST_DEBUG ("The removed pad wasn't controlled by us !");
|
|
return;
|
|
}
|
|
|
|
dc->priv->streams = g_list_delete_link (dc->priv->streams, tmp);
|
|
DISCO_UNLOCK (dc);
|
|
|
|
gst_element_set_state (ps->sink, GST_STATE_NULL);
|
|
gst_element_set_state (ps->queue, GST_STATE_NULL);
|
|
gst_element_unlink (ps->queue, ps->sink);
|
|
|
|
sinkpad = gst_element_get_static_pad (ps->queue, "sink");
|
|
gst_pad_unlink (pad, sinkpad);
|
|
gst_object_unref (sinkpad);
|
|
|
|
/* references removed here */
|
|
gst_bin_remove_many (dc->priv->pipeline, ps->sink, ps->queue, NULL);
|
|
|
|
if (ps->tags) {
|
|
gst_tag_list_free (ps->tags);
|
|
}
|
|
|
|
g_slice_free (PrivateStream, ps);
|
|
|
|
GST_DEBUG ("Done handling pad");
|
|
}
|
|
|
|
static GstStructure *
|
|
collect_stream_information (GstDiscoverer * dc, PrivateStream * ps, guint idx)
|
|
{
|
|
GstCaps *caps;
|
|
GstStructure *st;
|
|
gchar *stname;
|
|
|
|
stname = g_strdup_printf ("stream-%02d", idx);
|
|
st = gst_structure_new_empty (stname);
|
|
g_free (stname);
|
|
|
|
/* Get caps */
|
|
caps = gst_pad_get_current_caps (ps->pad);
|
|
if (!caps) {
|
|
GST_WARNING ("Couldn't get negotiated caps from %s:%s",
|
|
GST_DEBUG_PAD_NAME (ps->pad));
|
|
caps = gst_pad_query_caps (ps->pad, NULL);
|
|
}
|
|
if (caps) {
|
|
GST_DEBUG ("Got caps %" GST_PTR_FORMAT, caps);
|
|
gst_structure_id_set (st, _CAPS_QUARK, GST_TYPE_CAPS, caps, NULL);
|
|
|
|
gst_caps_unref (caps);
|
|
}
|
|
if (ps->tags)
|
|
gst_structure_id_set (st, _TAGS_QUARK, GST_TYPE_STRUCTURE, ps->tags, NULL);
|
|
|
|
return st;
|
|
}
|
|
|
|
/* Parses a set of caps and tags in st and populates a GstDiscovererStreamInfo
|
|
* structure (parent, if !NULL, otherwise it allocates one)
|
|
*/
|
|
static GstDiscovererStreamInfo *
|
|
collect_information (GstDiscoverer * dc, const GstStructure * st,
|
|
GstDiscovererStreamInfo * parent)
|
|
{
|
|
GstCaps *caps;
|
|
GstStructure *caps_st, *tags_st;
|
|
const gchar *name;
|
|
int tmp;
|
|
guint utmp;
|
|
|
|
if (!st || !gst_structure_id_has_field (st, _CAPS_QUARK)) {
|
|
GST_WARNING ("Couldn't find caps !");
|
|
if (parent)
|
|
return parent;
|
|
else
|
|
return (GstDiscovererStreamInfo *)
|
|
g_object_new (GST_TYPE_DISCOVERER_STREAM_INFO, NULL);
|
|
}
|
|
|
|
gst_structure_id_get (st, _CAPS_QUARK, GST_TYPE_CAPS, &caps, NULL);
|
|
caps_st = gst_caps_get_structure (caps, 0);
|
|
name = gst_structure_get_name (caps_st);
|
|
|
|
if (g_str_has_prefix (name, "audio/")) {
|
|
GstDiscovererAudioInfo *info;
|
|
|
|
if (parent)
|
|
info = (GstDiscovererAudioInfo *) parent;
|
|
else {
|
|
info = (GstDiscovererAudioInfo *)
|
|
g_object_new (GST_TYPE_DISCOVERER_AUDIO_INFO, NULL);
|
|
info->parent.caps = caps;
|
|
}
|
|
|
|
if (gst_structure_get_int (caps_st, "rate", &tmp))
|
|
info->sample_rate = (guint) tmp;
|
|
|
|
if (gst_structure_get_int (caps_st, "channels", &tmp))
|
|
info->channels = (guint) tmp;
|
|
|
|
if (gst_structure_get_int (caps_st, "depth", &tmp))
|
|
info->depth = (guint) tmp;
|
|
|
|
if (gst_structure_id_has_field (st, _TAGS_QUARK)) {
|
|
gst_structure_id_get (st, _TAGS_QUARK,
|
|
GST_TYPE_STRUCTURE, &tags_st, NULL);
|
|
if (gst_structure_get_uint (tags_st, GST_TAG_BITRATE, &utmp) ||
|
|
gst_structure_get_uint (tags_st, GST_TAG_NOMINAL_BITRATE, &utmp))
|
|
info->bitrate = utmp;
|
|
|
|
if (gst_structure_get_uint (tags_st, GST_TAG_MAXIMUM_BITRATE, &utmp))
|
|
info->max_bitrate = utmp;
|
|
|
|
/* FIXME: Is it worth it to remove the tags we've parsed? */
|
|
info->parent.tags = gst_tag_list_merge (info->parent.tags,
|
|
(GstTagList *) tags_st, GST_TAG_MERGE_REPLACE);
|
|
|
|
gst_structure_free (tags_st);
|
|
}
|
|
|
|
if (!info->language && ((GstDiscovererStreamInfo *) info)->tags) {
|
|
gchar *language;
|
|
if (gst_tag_list_get_string (((GstDiscovererStreamInfo *) info)->tags,
|
|
GST_TAG_LANGUAGE_CODE, &language)) {
|
|
info->language = language;
|
|
}
|
|
}
|
|
|
|
return (GstDiscovererStreamInfo *) info;
|
|
|
|
} else if (g_str_has_prefix (name, "video/") ||
|
|
g_str_has_prefix (name, "image/")) {
|
|
GstDiscovererVideoInfo *info;
|
|
GstVideoInfo vinfo;
|
|
|
|
if (parent)
|
|
info = (GstDiscovererVideoInfo *) parent;
|
|
else {
|
|
info = (GstDiscovererVideoInfo *)
|
|
g_object_new (GST_TYPE_DISCOVERER_VIDEO_INFO, NULL);
|
|
info->parent.caps = caps;
|
|
}
|
|
|
|
/* FIXME : gst_video_info_from_caps only works with raw caps,
|
|
* wouldn't we want to get all the info below for non-raw caps ?
|
|
*/
|
|
if (g_str_has_prefix (name, "video/x-raw") &&
|
|
gst_video_info_from_caps (&vinfo, caps)) {
|
|
info->width = (guint) vinfo.width;
|
|
info->height = (guint) vinfo.height;
|
|
|
|
info->depth = (guint) 0;
|
|
|
|
info->par_num = vinfo.par_n;
|
|
info->par_denom = vinfo.par_d;
|
|
|
|
info->framerate_num = vinfo.fps_n;
|
|
info->framerate_denom = vinfo.fps_d;
|
|
|
|
info->interlaced = (vinfo.flags & GST_VIDEO_FLAG_INTERLACED) != 0;
|
|
}
|
|
|
|
if (gst_structure_id_has_field (st, _TAGS_QUARK)) {
|
|
gst_structure_id_get (st, _TAGS_QUARK,
|
|
GST_TYPE_STRUCTURE, &tags_st, NULL);
|
|
if (gst_structure_get_uint (tags_st, GST_TAG_BITRATE, &utmp) ||
|
|
gst_structure_get_uint (tags_st, GST_TAG_NOMINAL_BITRATE, &utmp))
|
|
info->bitrate = utmp;
|
|
|
|
if (gst_structure_get_uint (tags_st, GST_TAG_MAXIMUM_BITRATE, &utmp))
|
|
info->max_bitrate = utmp;
|
|
|
|
/* FIXME: Is it worth it to remove the tags we've parsed? */
|
|
info->parent.tags = gst_tag_list_merge (info->parent.tags,
|
|
(GstTagList *) tags_st, GST_TAG_MERGE_REPLACE);
|
|
gst_structure_free (tags_st);
|
|
}
|
|
|
|
return (GstDiscovererStreamInfo *) info;
|
|
|
|
} else if (is_subtitle_caps (caps)) {
|
|
GstDiscovererSubtitleInfo *info;
|
|
|
|
if (parent)
|
|
info = (GstDiscovererSubtitleInfo *) parent;
|
|
else {
|
|
info = (GstDiscovererSubtitleInfo *)
|
|
g_object_new (GST_TYPE_DISCOVERER_SUBTITLE_INFO, NULL);
|
|
info->parent.caps = caps;
|
|
}
|
|
|
|
if (gst_structure_id_has_field (st, _TAGS_QUARK)) {
|
|
const gchar *language;
|
|
|
|
gst_structure_id_get (st, _TAGS_QUARK,
|
|
GST_TYPE_STRUCTURE, &tags_st, NULL);
|
|
|
|
language = gst_structure_get_string (caps_st, GST_TAG_LANGUAGE_CODE);
|
|
if (language)
|
|
info->language = g_strdup (language);
|
|
|
|
/* FIXME: Is it worth it to remove the tags we've parsed? */
|
|
info->parent.tags = gst_tag_list_merge (info->parent.tags,
|
|
(GstTagList *) tags_st, GST_TAG_MERGE_REPLACE);
|
|
gst_structure_free (tags_st);
|
|
|
|
}
|
|
|
|
if (!info->language && ((GstDiscovererStreamInfo *) info)->tags) {
|
|
gchar *language;
|
|
if (gst_tag_list_get_string (((GstDiscovererStreamInfo *) info)->tags,
|
|
GST_TAG_LANGUAGE_CODE, &language)) {
|
|
info->language = language;
|
|
}
|
|
}
|
|
|
|
return (GstDiscovererStreamInfo *) info;
|
|
|
|
} else {
|
|
/* None of the above - populate what information we can */
|
|
GstDiscovererStreamInfo *info;
|
|
|
|
if (parent)
|
|
info = parent;
|
|
else {
|
|
info = (GstDiscovererStreamInfo *)
|
|
g_object_new (GST_TYPE_DISCOVERER_STREAM_INFO, NULL);
|
|
info->caps = caps;
|
|
}
|
|
|
|
if (gst_structure_id_get (st, _TAGS_QUARK,
|
|
GST_TYPE_STRUCTURE, &tags_st, NULL)) {
|
|
info->tags = gst_tag_list_merge (info->tags, (GstTagList *) tags_st,
|
|
GST_TAG_MERGE_REPLACE);
|
|
gst_structure_free (tags_st);
|
|
}
|
|
|
|
return info;
|
|
}
|
|
|
|
}
|
|
|
|
static GstStructure *
|
|
find_stream_for_node (GstDiscoverer * dc, const GstStructure * topology)
|
|
{
|
|
GstPad *pad;
|
|
GstPad *target_pad = NULL;
|
|
GstStructure *st = NULL;
|
|
PrivateStream *ps;
|
|
guint i;
|
|
GList *tmp;
|
|
|
|
if (!gst_structure_id_has_field (topology, _TOPOLOGY_PAD_QUARK)) {
|
|
GST_DEBUG ("Could not find pad for node %" GST_PTR_FORMAT "\n", topology);
|
|
return NULL;
|
|
}
|
|
|
|
gst_structure_id_get (topology, _TOPOLOGY_PAD_QUARK,
|
|
GST_TYPE_PAD, &pad, NULL);
|
|
|
|
if (!dc->priv->streams)
|
|
return NULL;
|
|
|
|
for (i = 0, tmp = dc->priv->streams; tmp; tmp = tmp->next, i++) {
|
|
ps = (PrivateStream *) tmp->data;
|
|
|
|
target_pad = gst_ghost_pad_get_target (GST_GHOST_PAD (ps->pad));
|
|
gst_object_unref (target_pad);
|
|
|
|
if (target_pad == pad)
|
|
break;
|
|
}
|
|
|
|
if (tmp)
|
|
st = collect_stream_information (dc, ps, i);
|
|
|
|
gst_object_unref (pad);
|
|
|
|
return st;
|
|
}
|
|
|
|
static gboolean
|
|
child_is_raw_stream (GstCaps * parent, GstCaps * child)
|
|
{
|
|
GstStructure *st1, *st2;
|
|
const gchar *name1, *name2;
|
|
|
|
st1 = gst_caps_get_structure (parent, 0);
|
|
name1 = gst_structure_get_name (st1);
|
|
st2 = gst_caps_get_structure (child, 0);
|
|
name2 = gst_structure_get_name (st2);
|
|
|
|
if ((g_str_has_prefix (name1, "audio/") &&
|
|
g_str_has_prefix (name2, "audio/x-raw")) ||
|
|
((g_str_has_prefix (name1, "video/") ||
|
|
g_str_has_prefix (name1, "image/")) &&
|
|
g_str_has_prefix (name2, "video/x-raw"))) {
|
|
/* child is the "raw" sub-stream corresponding to parent */
|
|
return TRUE;
|
|
}
|
|
|
|
if (is_subtitle_caps (parent))
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* If a parent is non-NULL, collected stream information will be appended to it
|
|
* (and where the information exists, it will be overriden)
|
|
*/
|
|
static GstDiscovererStreamInfo *
|
|
parse_stream_topology (GstDiscoverer * dc, const GstStructure * topology,
|
|
GstDiscovererStreamInfo * parent)
|
|
{
|
|
GstDiscovererStreamInfo *res = NULL;
|
|
GstCaps *caps = NULL;
|
|
const GValue *nval = NULL;
|
|
|
|
GST_DEBUG ("parsing: %" GST_PTR_FORMAT, topology);
|
|
|
|
nval = gst_structure_get_value (topology, "next");
|
|
|
|
if (nval == NULL || GST_VALUE_HOLDS_STRUCTURE (nval)) {
|
|
GstStructure *st = find_stream_for_node (dc, topology);
|
|
gboolean add_to_list = TRUE;
|
|
|
|
if (st) {
|
|
res = collect_information (dc, st, parent);
|
|
gst_structure_free (st);
|
|
} else {
|
|
/* Didn't find a stream structure, so let's just use the caps we have */
|
|
res = collect_information (dc, topology, parent);
|
|
}
|
|
|
|
if (nval == NULL) {
|
|
/* FIXME : aggregate with information from main streams */
|
|
GST_DEBUG ("Coudn't find 'next' ! might be the last entry");
|
|
} else {
|
|
GstCaps *caps;
|
|
const GstStructure *st;
|
|
|
|
st = gst_value_get_structure (nval);
|
|
|
|
GST_DEBUG ("next is a structure %" GST_PTR_FORMAT, st);
|
|
|
|
if (!parent)
|
|
parent = res;
|
|
|
|
if (gst_structure_id_get (st, _CAPS_QUARK, GST_TYPE_CAPS, &caps, NULL)) {
|
|
if (gst_caps_can_intersect (parent->caps, caps)) {
|
|
/* We sometimes get an extra sub-stream from the parser. If this is
|
|
* the case, we just replace the parent caps with this stream's caps
|
|
* since they might contain more information */
|
|
gst_caps_unref (parent->caps);
|
|
parent->caps = caps;
|
|
|
|
parse_stream_topology (dc, st, parent);
|
|
add_to_list = FALSE;
|
|
|
|
} else if (child_is_raw_stream (parent->caps, caps)) {
|
|
/* This is the "raw" stream corresponding to the parent. This
|
|
* contains more information than the parent, tags etc. */
|
|
parse_stream_topology (dc, st, parent);
|
|
add_to_list = FALSE;
|
|
gst_caps_unref (caps);
|
|
|
|
} else {
|
|
GstDiscovererStreamInfo *next = parse_stream_topology (dc, st, NULL);
|
|
res->next = next;
|
|
next->previous = res;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (add_to_list) {
|
|
dc->priv->current_info->stream_list =
|
|
g_list_append (dc->priv->current_info->stream_list, res);
|
|
}
|
|
|
|
} else if (GST_VALUE_HOLDS_LIST (nval)) {
|
|
guint i, len;
|
|
GstDiscovererContainerInfo *cont;
|
|
GstTagList *tags;
|
|
|
|
if (!gst_structure_id_get (topology, _CAPS_QUARK,
|
|
GST_TYPE_CAPS, &caps, NULL))
|
|
GST_WARNING ("Couldn't find caps !");
|
|
|
|
len = gst_value_list_get_size (nval);
|
|
GST_DEBUG ("next is a list of %d entries", len);
|
|
|
|
cont = (GstDiscovererContainerInfo *)
|
|
g_object_new (GST_TYPE_DISCOVERER_CONTAINER_INFO, NULL);
|
|
cont->parent.caps = caps;
|
|
res = (GstDiscovererStreamInfo *) cont;
|
|
|
|
if (gst_structure_id_has_field (topology, _TAGS_QUARK)) {
|
|
GstTagList *tmp;
|
|
|
|
gst_structure_id_get (topology, _TAGS_QUARK,
|
|
GST_TYPE_STRUCTURE, &tags, NULL);
|
|
|
|
GST_DEBUG ("Merge tags %" GST_PTR_FORMAT, tags);
|
|
|
|
tmp =
|
|
gst_tag_list_merge (cont->parent.tags, (GstTagList *) tags,
|
|
GST_TAG_MERGE_APPEND);
|
|
gst_tag_list_free (tags);
|
|
if (cont->parent.tags)
|
|
gst_tag_list_free (cont->parent.tags);
|
|
cont->parent.tags = tmp;
|
|
GST_DEBUG ("Container info tags %" GST_PTR_FORMAT, tmp);
|
|
}
|
|
|
|
for (i = 0; i < len; i++) {
|
|
const GValue *subv = gst_value_list_get_value (nval, i);
|
|
const GstStructure *subst = gst_value_get_structure (subv);
|
|
GstDiscovererStreamInfo *substream;
|
|
|
|
GST_DEBUG ("%d %" GST_PTR_FORMAT, i, subst);
|
|
|
|
substream = parse_stream_topology (dc, subst, NULL);
|
|
|
|
substream->previous = res;
|
|
cont->streams =
|
|
g_list_append (cont->streams,
|
|
gst_discoverer_stream_info_ref (substream));
|
|
}
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/* Called when pipeline is pre-rolled */
|
|
static void
|
|
discoverer_collect (GstDiscoverer * dc)
|
|
{
|
|
GST_DEBUG ("Collecting information");
|
|
|
|
/* Stop the timeout handler if present */
|
|
if (dc->priv->timeoutid) {
|
|
g_source_remove (dc->priv->timeoutid);
|
|
dc->priv->timeoutid = 0;
|
|
}
|
|
|
|
if (dc->priv->streams) {
|
|
/* FIXME : Make this querying optional */
|
|
if (TRUE) {
|
|
GstElement *pipeline = (GstElement *) dc->priv->pipeline;
|
|
gint64 dur;
|
|
|
|
GST_DEBUG ("Attempting to query duration");
|
|
|
|
if (gst_element_query_duration (pipeline, GST_FORMAT_TIME, &dur)) {
|
|
GST_DEBUG ("Got duration %" GST_TIME_FORMAT, GST_TIME_ARGS (dur));
|
|
dc->priv->current_info->duration = (guint64) dur;
|
|
}
|
|
|
|
if (dc->priv->seeking_query) {
|
|
if (gst_element_query (pipeline, dc->priv->seeking_query)) {
|
|
GstFormat format;
|
|
gboolean seekable;
|
|
|
|
gst_query_parse_seeking (dc->priv->seeking_query, &format,
|
|
&seekable, NULL, NULL);
|
|
if (format == GST_FORMAT_TIME) {
|
|
GST_DEBUG ("Got seekable %d", seekable);
|
|
dc->priv->current_info->seekable = seekable;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dc->priv->current_topology)
|
|
dc->priv->current_info->stream_info = parse_stream_topology (dc,
|
|
dc->priv->current_topology, NULL);
|
|
|
|
/*
|
|
* Images need some special handling. They do not have a duration, have
|
|
* caps named image/<foo> (th exception being MJPEG video which is also
|
|
* type image/jpeg), and should consist of precisely one stream (actually
|
|
* initially there are 2, the image and raw stream, but we squash these
|
|
* while parsing the stream topology). At some point, if we find that these
|
|
* conditions are not sufficient, we can count the number of decoders and
|
|
* parsers in the chain, and if there's more than one decoder, or any
|
|
* parser at all, we should not mark this as an image.
|
|
*/
|
|
if (dc->priv->current_info->duration == 0 &&
|
|
dc->priv->current_info->stream_info != NULL &&
|
|
dc->priv->current_info->stream_info->next == NULL) {
|
|
GstStructure *st =
|
|
gst_caps_get_structure (dc->priv->current_info->stream_info->caps, 0);
|
|
|
|
if (g_str_has_prefix (gst_structure_get_name (st), "image/"))
|
|
((GstDiscovererVideoInfo *) dc->priv->current_info->
|
|
stream_info)->is_image = TRUE;
|
|
}
|
|
}
|
|
|
|
if (dc->priv->async) {
|
|
GST_DEBUG ("Emitting 'discoverered'");
|
|
g_signal_emit (dc, gst_discoverer_signals[SIGNAL_DISCOVERED], 0,
|
|
dc->priv->current_info, dc->priv->current_error);
|
|
/* Clients get a copy of current_info since it is a boxed type */
|
|
gst_discoverer_info_unref (dc->priv->current_info);
|
|
}
|
|
}
|
|
|
|
static void
|
|
get_async_cb (gpointer cb_data, GSource * source, GSourceFunc * func,
|
|
gpointer * data)
|
|
{
|
|
*func = (GSourceFunc) async_timeout_cb;
|
|
*data = cb_data;
|
|
}
|
|
|
|
/* Wrapper since GSourceCallbackFuncs don't expect a return value from ref() */
|
|
static void
|
|
_void_g_object_ref (gpointer object)
|
|
{
|
|
g_object_ref (G_OBJECT (object));
|
|
}
|
|
|
|
static void
|
|
handle_current_async (GstDiscoverer * dc)
|
|
{
|
|
GSource *source;
|
|
static GSourceCallbackFuncs cb_funcs = {
|
|
_void_g_object_ref,
|
|
g_object_unref,
|
|
get_async_cb,
|
|
};
|
|
|
|
/* Attach a timeout to the main context */
|
|
source = g_timeout_source_new (dc->priv->timeout / GST_MSECOND);
|
|
g_source_set_callback_indirect (source, g_object_ref (dc), &cb_funcs);
|
|
dc->priv->timeoutid = g_source_attach (source, dc->priv->ctx);
|
|
g_source_unref (source);
|
|
}
|
|
|
|
|
|
/* Returns TRUE if processing should stop */
|
|
static gboolean
|
|
handle_message (GstDiscoverer * dc, GstMessage * msg)
|
|
{
|
|
gboolean done = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (GST_MESSAGE_SRC (msg), "got a %s message",
|
|
GST_MESSAGE_TYPE_NAME (msg));
|
|
|
|
switch (GST_MESSAGE_TYPE (msg)) {
|
|
case GST_MESSAGE_ERROR:{
|
|
GError *gerr;
|
|
gchar *debug;
|
|
|
|
gst_message_parse_error (msg, &gerr, &debug);
|
|
GST_WARNING_OBJECT (GST_MESSAGE_SRC (msg),
|
|
"Got an error [debug:%s], [message:%s]", debug, gerr->message);
|
|
dc->priv->current_error = gerr;
|
|
g_free (debug);
|
|
|
|
/* We need to stop */
|
|
done = TRUE;
|
|
|
|
GST_DEBUG ("Setting result to ERROR");
|
|
dc->priv->current_info->result = GST_DISCOVERER_ERROR;
|
|
}
|
|
break;
|
|
|
|
case GST_MESSAGE_EOS:
|
|
GST_DEBUG ("Got EOS !");
|
|
done = TRUE;
|
|
break;
|
|
|
|
case GST_MESSAGE_ASYNC_DONE:
|
|
if (GST_MESSAGE_SRC (msg) == (GstObject *) dc->priv->pipeline) {
|
|
GST_DEBUG ("Finished changing state asynchronously");
|
|
done = TRUE;
|
|
|
|
}
|
|
break;
|
|
|
|
case GST_MESSAGE_ELEMENT:
|
|
{
|
|
GQuark sttype;
|
|
const GstStructure *structure;
|
|
|
|
structure = gst_message_get_structure (msg);
|
|
sttype = gst_structure_get_name_id (structure);
|
|
GST_DEBUG_OBJECT (GST_MESSAGE_SRC (msg),
|
|
"structure %" GST_PTR_FORMAT, structure);
|
|
if (sttype == _MISSING_PLUGIN_QUARK) {
|
|
GST_DEBUG_OBJECT (GST_MESSAGE_SRC (msg),
|
|
"Setting result to MISSING_PLUGINS");
|
|
dc->priv->current_info->result = GST_DISCOVERER_MISSING_PLUGINS;
|
|
dc->priv->current_info->misc = gst_structure_copy (structure);
|
|
} else if (sttype == _STREAM_TOPOLOGY_QUARK) {
|
|
dc->priv->current_topology = gst_structure_copy (structure);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GST_MESSAGE_TAG:
|
|
{
|
|
GstTagList *tl, *tmp;
|
|
|
|
gst_message_parse_tag (msg, &tl);
|
|
GST_DEBUG_OBJECT (GST_MESSAGE_SRC (msg), "Got tags %" GST_PTR_FORMAT, tl);
|
|
/* Merge with current tags */
|
|
tmp =
|
|
gst_tag_list_merge (dc->priv->current_info->tags, tl,
|
|
GST_TAG_MERGE_APPEND);
|
|
gst_tag_list_free (tl);
|
|
if (dc->priv->current_info->tags)
|
|
gst_tag_list_free (dc->priv->current_info->tags);
|
|
dc->priv->current_info->tags = tmp;
|
|
GST_DEBUG_OBJECT (GST_MESSAGE_SRC (msg), "Current info %p, tags %"
|
|
GST_PTR_FORMAT, dc->priv->current_info, tmp);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return done;
|
|
}
|
|
|
|
|
|
static void
|
|
handle_current_sync (GstDiscoverer * dc)
|
|
{
|
|
GTimer *timer;
|
|
gdouble deadline = ((gdouble) dc->priv->timeout) / GST_SECOND;
|
|
GstMessage *msg;
|
|
gboolean done = FALSE;
|
|
|
|
timer = g_timer_new ();
|
|
g_timer_start (timer);
|
|
|
|
do {
|
|
/* poll bus with timeout */
|
|
/* FIXME : make the timeout more fine-tuned */
|
|
if ((msg = gst_bus_timed_pop (dc->priv->bus, GST_SECOND / 2))) {
|
|
done = handle_message (dc, msg);
|
|
gst_message_unref (msg);
|
|
}
|
|
|
|
} while (!done && (g_timer_elapsed (timer, NULL) < deadline));
|
|
|
|
/* return result */
|
|
if (!done) {
|
|
GST_DEBUG ("we timed out! Setting result to TIMEOUT");
|
|
dc->priv->current_info->result = GST_DISCOVERER_TIMEOUT;
|
|
}
|
|
|
|
GST_DEBUG ("Done");
|
|
|
|
g_timer_stop (timer);
|
|
g_timer_destroy (timer);
|
|
}
|
|
|
|
static void
|
|
_setup_locked (GstDiscoverer * dc)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
|
|
GST_DEBUG ("Setting up");
|
|
|
|
/* Pop URI off the pending URI list */
|
|
dc->priv->current_info =
|
|
(GstDiscovererInfo *) g_object_new (GST_TYPE_DISCOVERER_INFO, NULL);
|
|
dc->priv->current_info->uri = (gchar *) dc->priv->pending_uris->data;
|
|
dc->priv->pending_uris =
|
|
g_list_delete_link (dc->priv->pending_uris, dc->priv->pending_uris);
|
|
|
|
/* set uri on uridecodebin */
|
|
g_object_set (dc->priv->uridecodebin, "uri", dc->priv->current_info->uri,
|
|
NULL);
|
|
|
|
GST_DEBUG ("Current is now %s", dc->priv->current_info->uri);
|
|
|
|
dc->priv->processing = TRUE;
|
|
|
|
/* set pipeline to PAUSED */
|
|
DISCO_UNLOCK (dc);
|
|
GST_DEBUG ("Setting pipeline to PAUSED");
|
|
ret =
|
|
gst_element_set_state ((GstElement *) dc->priv->pipeline,
|
|
GST_STATE_PAUSED);
|
|
DISCO_LOCK (dc);
|
|
|
|
GST_DEBUG_OBJECT (dc, "Pipeline going to PAUSED : %s",
|
|
gst_element_state_change_return_get_name (ret));
|
|
}
|
|
|
|
static void
|
|
discoverer_cleanup (GstDiscoverer * dc)
|
|
{
|
|
GST_DEBUG ("Cleaning up");
|
|
|
|
gst_bus_set_flushing (dc->priv->bus, TRUE);
|
|
gst_element_set_state ((GstElement *) dc->priv->pipeline, GST_STATE_READY);
|
|
gst_bus_set_flushing (dc->priv->bus, FALSE);
|
|
|
|
DISCO_LOCK (dc);
|
|
if (dc->priv->current_error)
|
|
g_error_free (dc->priv->current_error);
|
|
dc->priv->current_error = NULL;
|
|
if (dc->priv->current_topology) {
|
|
gst_structure_free (dc->priv->current_topology);
|
|
dc->priv->current_topology = NULL;
|
|
}
|
|
|
|
dc->priv->current_info = NULL;
|
|
|
|
/* Try popping the next uri */
|
|
if (dc->priv->async) {
|
|
if (dc->priv->pending_uris != NULL) {
|
|
_setup_locked (dc);
|
|
DISCO_UNLOCK (dc);
|
|
/* Start timeout */
|
|
handle_current_async (dc);
|
|
} else {
|
|
/* We're done ! */
|
|
DISCO_UNLOCK (dc);
|
|
g_signal_emit (dc, gst_discoverer_signals[SIGNAL_FINISHED], 0);
|
|
}
|
|
} else
|
|
DISCO_UNLOCK (dc);
|
|
|
|
GST_DEBUG ("out");
|
|
}
|
|
|
|
static void
|
|
discoverer_bus_cb (GstBus * bus, GstMessage * msg, GstDiscoverer * dc)
|
|
{
|
|
if (dc->priv->processing) {
|
|
if (handle_message (dc, msg)) {
|
|
GST_DEBUG ("Stopping asynchronously");
|
|
/* Serialise with _event_probe() */
|
|
DISCO_LOCK (dc);
|
|
dc->priv->processing = FALSE;
|
|
DISCO_UNLOCK (dc);
|
|
discoverer_collect (dc);
|
|
discoverer_cleanup (dc);
|
|
}
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
async_timeout_cb (GstDiscoverer * dc)
|
|
{
|
|
if (!g_source_is_destroyed (g_main_current_source ())) {
|
|
dc->priv->timeoutid = 0;
|
|
GST_DEBUG ("Setting result to TIMEOUT");
|
|
dc->priv->current_info->result = GST_DISCOVERER_TIMEOUT;
|
|
dc->priv->processing = FALSE;
|
|
discoverer_collect (dc);
|
|
discoverer_cleanup (dc);
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
/* If there is a pending URI, it will pop it from the list of pending
|
|
* URIs and start the discovery on it.
|
|
*
|
|
* Returns GST_DISCOVERER_OK if the next URI was popped and is processing,
|
|
* else a error flag.
|
|
*/
|
|
static GstDiscovererResult
|
|
start_discovering (GstDiscoverer * dc)
|
|
{
|
|
GstDiscovererResult res = GST_DISCOVERER_OK;
|
|
|
|
GST_DEBUG ("Starting");
|
|
|
|
DISCO_LOCK (dc);
|
|
if (dc->priv->pending_uris == NULL) {
|
|
GST_WARNING ("No URI to process");
|
|
res = GST_DISCOVERER_URI_INVALID;
|
|
DISCO_UNLOCK (dc);
|
|
goto beach;
|
|
}
|
|
|
|
if (dc->priv->current_info != NULL) {
|
|
GST_WARNING ("Already processing a file");
|
|
res = GST_DISCOVERER_BUSY;
|
|
DISCO_UNLOCK (dc);
|
|
goto beach;
|
|
}
|
|
|
|
g_signal_emit (dc, gst_discoverer_signals[SIGNAL_STARTING], 0);
|
|
|
|
_setup_locked (dc);
|
|
|
|
DISCO_UNLOCK (dc);
|
|
|
|
if (dc->priv->async)
|
|
handle_current_async (dc);
|
|
else
|
|
handle_current_sync (dc);
|
|
|
|
beach:
|
|
return res;
|
|
}
|
|
|
|
|
|
/**
|
|
* gst_discoverer_start:
|
|
* @discoverer: A #GstDiscoverer
|
|
*
|
|
* Allow asynchronous discovering of URIs to take place.
|
|
* A #GMainLoop must be available for #GstDiscoverer to properly work in
|
|
* asynchronous mode.
|
|
*
|
|
* Since: 0.10.31
|
|
*/
|
|
void
|
|
gst_discoverer_start (GstDiscoverer * discoverer)
|
|
{
|
|
GSource *source;
|
|
GMainContext *ctx = NULL;
|
|
|
|
GST_DEBUG_OBJECT (discoverer, "Starting...");
|
|
|
|
if (discoverer->priv->async) {
|
|
GST_DEBUG_OBJECT (discoverer, "We were already started");
|
|
return;
|
|
}
|
|
|
|
discoverer->priv->async = TRUE;
|
|
discoverer->priv->running = TRUE;
|
|
|
|
ctx = g_main_context_get_thread_default ();
|
|
|
|
/* Connect to bus signals */
|
|
if (ctx == NULL)
|
|
ctx = g_main_context_default ();
|
|
|
|
source = gst_bus_create_watch (discoverer->priv->bus);
|
|
g_source_set_callback (source, (GSourceFunc) gst_bus_async_signal_func,
|
|
NULL, NULL);
|
|
discoverer->priv->sourceid = g_source_attach (source, ctx);
|
|
g_source_unref (source);
|
|
discoverer->priv->ctx = g_main_context_ref (ctx);
|
|
|
|
start_discovering (discoverer);
|
|
GST_DEBUG_OBJECT (discoverer, "Started");
|
|
}
|
|
|
|
/**
|
|
* gst_discoverer_stop:
|
|
* @discoverer: A #GstDiscoverer
|
|
*
|
|
* Stop the discovery of any pending URIs and clears the list of
|
|
* pending URIS (if any).
|
|
*
|
|
* Since: 0.10.31
|
|
*/
|
|
void
|
|
gst_discoverer_stop (GstDiscoverer * discoverer)
|
|
{
|
|
GST_DEBUG_OBJECT (discoverer, "Stopping...");
|
|
|
|
if (!discoverer->priv->async) {
|
|
GST_DEBUG_OBJECT (discoverer,
|
|
"We were already stopped, or running synchronously");
|
|
return;
|
|
}
|
|
|
|
DISCO_LOCK (discoverer);
|
|
if (discoverer->priv->processing) {
|
|
/* We prevent any further processing by setting the bus to
|
|
* flushing and setting the pipeline to READY.
|
|
* _reset() will take care of the rest of the cleanup */
|
|
if (discoverer->priv->bus)
|
|
gst_bus_set_flushing (discoverer->priv->bus, TRUE);
|
|
if (discoverer->priv->pipeline)
|
|
gst_element_set_state ((GstElement *) discoverer->priv->pipeline,
|
|
GST_STATE_READY);
|
|
}
|
|
discoverer->priv->running = FALSE;
|
|
DISCO_UNLOCK (discoverer);
|
|
|
|
/* Remove timeout handler */
|
|
if (discoverer->priv->timeoutid) {
|
|
g_source_remove (discoverer->priv->timeoutid);
|
|
discoverer->priv->timeoutid = 0;
|
|
}
|
|
/* Remove signal watch */
|
|
if (discoverer->priv->sourceid) {
|
|
g_source_remove (discoverer->priv->sourceid);
|
|
discoverer->priv->sourceid = 0;
|
|
}
|
|
/* Unref main context */
|
|
if (discoverer->priv->ctx) {
|
|
g_main_context_unref (discoverer->priv->ctx);
|
|
discoverer->priv->ctx = NULL;
|
|
}
|
|
discoverer_reset (discoverer);
|
|
|
|
discoverer->priv->async = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (discoverer, "Stopped");
|
|
}
|
|
|
|
/**
|
|
* gst_discoverer_discover_uri_async:
|
|
* @discoverer: A #GstDiscoverer
|
|
* @uri: the URI to add.
|
|
*
|
|
* Appends the given @uri to the list of URIs to discoverer. The actual
|
|
* discovery of the @uri will only take place if gst_discoverer_start() has
|
|
* been called.
|
|
*
|
|
* A copy of @uri will be made internally, so the caller can safely g_free()
|
|
* afterwards.
|
|
*
|
|
* Returns: %TRUE if the @uri was successfully appended to the list of pending
|
|
* uris, else %FALSE
|
|
*
|
|
* Since: 0.10.31
|
|
*/
|
|
gboolean
|
|
gst_discoverer_discover_uri_async (GstDiscoverer * discoverer,
|
|
const gchar * uri)
|
|
{
|
|
gboolean can_run;
|
|
|
|
GST_DEBUG_OBJECT (discoverer, "uri : %s", uri);
|
|
|
|
DISCO_LOCK (discoverer);
|
|
can_run = (discoverer->priv->pending_uris == NULL);
|
|
discoverer->priv->pending_uris =
|
|
g_list_append (discoverer->priv->pending_uris, g_strdup (uri));
|
|
DISCO_UNLOCK (discoverer);
|
|
|
|
if (can_run)
|
|
start_discovering (discoverer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* Synchronous mode */
|
|
/**
|
|
* gst_discoverer_discover_uri:
|
|
* @discoverer: A #GstDiscoverer
|
|
* @uri: The URI to run on.
|
|
* @err: (out) (allow-none): If an error occurred, this field will be filled in.
|
|
*
|
|
* Synchronously discovers the given @uri.
|
|
*
|
|
* A copy of @uri will be made internally, so the caller can safely g_free()
|
|
* afterwards.
|
|
*
|
|
* Returns: (transfer full): the result of the scanning. Can be %NULL if an
|
|
* error occurred.
|
|
*
|
|
* Since: 0.10.31
|
|
*/
|
|
GstDiscovererInfo *
|
|
gst_discoverer_discover_uri (GstDiscoverer * discoverer, const gchar * uri,
|
|
GError ** err)
|
|
{
|
|
GstDiscovererResult res = 0;
|
|
GstDiscovererInfo *info;
|
|
|
|
GST_DEBUG_OBJECT (discoverer, "uri:%s", uri);
|
|
|
|
DISCO_LOCK (discoverer);
|
|
if (G_UNLIKELY (discoverer->priv->current_info)) {
|
|
DISCO_UNLOCK (discoverer);
|
|
GST_WARNING_OBJECT (discoverer, "Already handling a uri");
|
|
return NULL;
|
|
}
|
|
|
|
discoverer->priv->pending_uris =
|
|
g_list_append (discoverer->priv->pending_uris, g_strdup (uri));
|
|
DISCO_UNLOCK (discoverer);
|
|
|
|
res = start_discovering (discoverer);
|
|
discoverer_collect (discoverer);
|
|
|
|
/* Get results */
|
|
if (err) {
|
|
if (discoverer->priv->current_error)
|
|
*err = g_error_copy (discoverer->priv->current_error);
|
|
else
|
|
*err = NULL;
|
|
}
|
|
if (res != GST_DISCOVERER_OK) {
|
|
GST_DEBUG ("Setting result to %d (was %d)", res,
|
|
discoverer->priv->current_info->result);
|
|
discoverer->priv->current_info->result = res;
|
|
}
|
|
info = discoverer->priv->current_info;
|
|
|
|
discoverer_cleanup (discoverer);
|
|
|
|
return info;
|
|
}
|
|
|
|
/**
|
|
* gst_discoverer_new:
|
|
* @timeout: timeout per file, in nanoseconds. Allowed are values between
|
|
* one second (#GST_SECOND) and one hour (3600 * #GST_SECOND)
|
|
* @err: a pointer to a #GError. can be %NULL
|
|
*
|
|
* Creates a new #GstDiscoverer with the provided timeout.
|
|
*
|
|
* Returns: (transfer full): The new #GstDiscoverer.
|
|
* If an error occurred when creating the discoverer, @err will be set
|
|
* accordingly and %NULL will be returned. If @err is set, the caller must
|
|
* free it when no longer needed using g_error_free().
|
|
*
|
|
* Since: 0.10.31
|
|
*/
|
|
GstDiscoverer *
|
|
gst_discoverer_new (GstClockTime timeout, GError ** err)
|
|
{
|
|
GstDiscoverer *res;
|
|
|
|
res = g_object_new (GST_TYPE_DISCOVERER, "timeout", timeout, NULL);
|
|
if (res->priv->uridecodebin == NULL) {
|
|
if (err)
|
|
*err = g_error_new (GST_CORE_ERROR, GST_CORE_ERROR_MISSING_PLUGIN,
|
|
"Couldn't create 'uridecodebin' element");
|
|
gst_object_unref (res);
|
|
res = NULL;
|
|
}
|
|
return res;
|
|
}
|