mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2826 lines
85 KiB
C
2826 lines
85 KiB
C
/* GStreamer
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* Copyright (C) <2015> Jan Schmidt <jan@centricular.com>
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* Copyright (C) <2007> Wim Taymans <wim.taymans@gmail.com>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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/**
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* SECTION:element-urisourcebin
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*
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* urisourcebin is an element for accessing URIs in a uniform manner.
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*
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* It handles selecting a URI source element and potentially download
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* buffering for network sources. It produces one or more source pads,
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* depending on the input source, for feeding to decoding chains or decodebin.
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*
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* The main configuration is via the #GstURISourceBin:uri property.
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*
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* <emphasis>urisourcebin is still experimental API and a technology preview.
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* Its behaviour and exposed API is subject to change.</emphasis>
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*/
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/* FIXME 0.11: suppress warnings for deprecated API such as GValueArray
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* with newer GLib versions (>= 2.31.0) */
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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <string.h>
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#include <gst/gst.h>
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#include <gst/gst-i18n-plugin.h>
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#include <gst/pbutils/missing-plugins.h>
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#include "gstplay-enum.h"
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#include "gstrawcaps.h"
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#include "gstplayback.h"
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#include "gstplaybackutils.h"
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#define GST_TYPE_URI_DECODE_BIN \
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(gst_uri_source_bin_get_type())
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#define GST_URI_SOURCE_BIN(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_URI_DECODE_BIN,GstURISourceBin))
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#define GST_URI_SOURCE_BIN_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_URI_DECODE_BIN,GstURISourceBinClass))
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#define GST_IS_URI_SOURCE_BIN(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_URI_DECODE_BIN))
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#define GST_IS_URI_SOURCE_BIN_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_URI_DECODE_BIN))
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#define GST_URI_SOURCE_BIN_CAST(obj) ((GstURISourceBin *) (obj))
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typedef struct _GstURISourceBin GstURISourceBin;
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typedef struct _GstURISourceBinClass GstURISourceBinClass;
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typedef struct _ChildSrcPadInfo ChildSrcPadInfo;
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typedef struct _OutputSlotInfo OutputSlotInfo;
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#define GST_URI_SOURCE_BIN_LOCK(dec) (g_mutex_lock(&((GstURISourceBin*)(dec))->lock))
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#define GST_URI_SOURCE_BIN_UNLOCK(dec) (g_mutex_unlock(&((GstURISourceBin*)(dec))->lock))
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/* Track a source pad from a child that
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* is linked or needs linking to an output
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* slot */
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struct _ChildSrcPadInfo
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{
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guint blocking_probe_id;
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guint event_probe_id;
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GstPad *demux_src_pad;
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GstCaps *cur_caps; /* holds ref */
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/* Configured output slot, if any */
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OutputSlotInfo *output_slot;
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};
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struct _OutputSlotInfo
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{
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ChildSrcPadInfo *linked_info; /* demux source pad info feeding this slot, if any */
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GstElement *queue; /* queue2 or downloadbuffer */
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GstPad *sinkpad; /* Sink pad of the queue eleemnt */
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GstPad *srcpad; /* Output ghost pad */
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gboolean is_eos; /* Did EOS get fed into the buffering element */
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};
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/**
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* GstURISourceBin
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*
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* urisourcebin element struct
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*/
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struct _GstURISourceBin
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{
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GstBin parent_instance;
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GMutex lock; /* lock for constructing */
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GMutex factories_lock;
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guint32 factories_cookie;
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GList *factories; /* factories we can use for selecting elements */
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gchar *uri;
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guint64 connection_speed;
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gboolean is_stream;
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gboolean is_adaptive;
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gboolean need_queue;
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guint64 buffer_duration; /* When buffering, buffer duration (ns) */
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guint buffer_size; /* When buffering, buffer size (bytes) */
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gboolean download;
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gboolean use_buffering;
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GstElement *source;
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GstElement *typefind;
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guint have_type_id; /* have-type signal id from typefind */
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GstElement *demuxer; /* Adaptive demuxer if any */
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GSList *out_slots;
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GHashTable *streams;
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guint numpads;
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/* for dynamic sources */
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guint src_np_sig_id; /* new-pad signal id */
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gboolean async_pending; /* async-start has been emitted */
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guint64 ring_buffer_max_size; /* 0 means disabled */
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GList *pending_pads; /* Pads we have blocked pending assignment
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to an output source pad */
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GList *inactive_output_pads; /* output pads that were unghosted */
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GList *buffering_status; /* element currently buffering messages */
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gint last_buffering_pct; /* Avoid sending buffering over and over */
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};
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struct _GstURISourceBinClass
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{
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GstBinClass parent_class;
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/* signal fired when we found a pad that we cannot decode */
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void (*unknown_type) (GstElement * element, GstPad * pad, GstCaps * caps);
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/* signal fired to know if we continue trying to decode the given caps */
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gboolean (*autoplug_continue) (GstElement * element, GstPad * pad,
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GstCaps * caps);
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/* signal fired to get a list of factories to try to autoplug */
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GValueArray *(*autoplug_factories) (GstElement * element, GstPad * pad,
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GstCaps * caps);
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/* signal fired to sort the factories */
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GValueArray *(*autoplug_sort) (GstElement * element, GstPad * pad,
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GstCaps * caps, GValueArray * factories);
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/* signal fired to select from the proposed list of factories */
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GstAutoplugSelectResult (*autoplug_select) (GstElement * element,
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GstPad * pad, GstCaps * caps, GstElementFactory * factory);
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/* signal fired when a autoplugged element that is not linked downstream
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* or exposed wants to query something */
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gboolean (*autoplug_query) (GstElement * element, GstPad * pad,
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GstQuery * query);
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/* emitted when all data is decoded */
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void (*drained) (GstElement * element);
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};
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static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src_%u",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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static GstStaticCaps default_raw_caps = GST_STATIC_CAPS (DEFAULT_RAW_CAPS);
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GST_DEBUG_CATEGORY_STATIC (gst_uri_source_bin_debug);
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#define GST_CAT_DEFAULT gst_uri_source_bin_debug
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/* signals */
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enum
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{
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SIGNAL_UNKNOWN_TYPE,
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SIGNAL_AUTOPLUG_CONTINUE,
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SIGNAL_AUTOPLUG_FACTORIES,
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SIGNAL_AUTOPLUG_SELECT,
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SIGNAL_AUTOPLUG_SORT,
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SIGNAL_AUTOPLUG_QUERY,
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SIGNAL_DRAINED,
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SIGNAL_SOURCE_SETUP,
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LAST_SIGNAL
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};
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/* properties */
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#define DEFAULT_PROP_URI NULL
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#define DEFAULT_PROP_SOURCE NULL
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#define DEFAULT_CONNECTION_SPEED 0
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#define DEFAULT_BUFFER_DURATION -1
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#define DEFAULT_BUFFER_SIZE -1
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#define DEFAULT_DOWNLOAD FALSE
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#define DEFAULT_USE_BUFFERING FALSE
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#define DEFAULT_RING_BUFFER_MAX_SIZE 0
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#define DEFAULT_CAPS (gst_static_caps_get (&default_raw_caps))
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enum
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{
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PROP_0,
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PROP_URI,
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PROP_SOURCE,
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PROP_CONNECTION_SPEED,
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PROP_BUFFER_SIZE,
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PROP_BUFFER_DURATION,
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PROP_DOWNLOAD,
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PROP_USE_BUFFERING,
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PROP_RING_BUFFER_MAX_SIZE
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};
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static void post_missing_plugin_error (GstElement * dec,
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const gchar * element_name);
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static guint gst_uri_source_bin_signals[LAST_SIGNAL] = { 0 };
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GType gst_uri_source_bin_get_type (void);
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#define gst_uri_source_bin_parent_class parent_class
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G_DEFINE_TYPE (GstURISourceBin, gst_uri_source_bin, GST_TYPE_BIN);
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static void gst_uri_source_bin_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_uri_source_bin_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_uri_source_bin_finalize (GObject * obj);
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static void handle_message (GstBin * bin, GstMessage * msg);
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static gboolean gst_uri_source_bin_query (GstElement * element,
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GstQuery * query);
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static GstStateChangeReturn gst_uri_source_bin_change_state (GstElement *
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element, GstStateChange transition);
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static void remove_demuxer (GstURISourceBin * bin);
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static void expose_output_pad (GstURISourceBin * urisrc, GstPad * pad);
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static OutputSlotInfo *get_output_slot (GstURISourceBin * urisrc,
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gboolean do_download, gboolean is_adaptive, GstCaps * caps);
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static void free_output_slot (OutputSlotInfo * slot, GstURISourceBin * urisrc);
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static GstPad *create_output_pad (GstURISourceBin * urisrc, GstPad * pad);
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static void remove_buffering_msgs (GstURISourceBin * bin, GstObject * src);
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static gboolean
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_gst_boolean_accumulator (GSignalInvocationHint * ihint,
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GValue * return_accu, const GValue * handler_return, gpointer dummy)
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{
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gboolean myboolean;
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myboolean = g_value_get_boolean (handler_return);
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if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
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g_value_set_boolean (return_accu, myboolean);
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/* stop emission if FALSE */
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return myboolean;
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}
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static gboolean
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_gst_boolean_or_accumulator (GSignalInvocationHint * ihint,
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GValue * return_accu, const GValue * handler_return, gpointer dummy)
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{
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gboolean myboolean;
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gboolean retboolean;
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myboolean = g_value_get_boolean (handler_return);
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retboolean = g_value_get_boolean (return_accu);
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if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
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g_value_set_boolean (return_accu, myboolean || retboolean);
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return TRUE;
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}
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static gboolean
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_gst_array_accumulator (GSignalInvocationHint * ihint,
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GValue * return_accu, const GValue * handler_return, gpointer dummy)
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{
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gpointer array;
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array = g_value_get_boxed (handler_return);
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if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
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g_value_set_boxed (return_accu, array);
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return FALSE;
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}
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static gboolean
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_gst_select_accumulator (GSignalInvocationHint * ihint,
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GValue * return_accu, const GValue * handler_return, gpointer dummy)
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{
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GstAutoplugSelectResult res;
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res = g_value_get_enum (handler_return);
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if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
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g_value_set_enum (return_accu, res);
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/* Call the next handler in the chain (if any) when the current callback
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* returns TRY. This makes it possible to register separate autoplug-select
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* handlers that implement different TRY/EXPOSE/SKIP strategies.
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*/
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if (res == GST_AUTOPLUG_SELECT_TRY)
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return TRUE;
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return FALSE;
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}
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static gboolean
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_gst_array_hasvalue_accumulator (GSignalInvocationHint * ihint,
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GValue * return_accu, const GValue * handler_return, gpointer dummy)
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{
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gpointer array;
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array = g_value_get_boxed (handler_return);
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if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
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g_value_set_boxed (return_accu, array);
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if (array != NULL)
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return FALSE;
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return TRUE;
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}
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static gboolean
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gst_uri_source_bin_autoplug_continue (GstElement * element, GstPad * pad,
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GstCaps * caps)
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{
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/* by default we always continue */
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return TRUE;
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}
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/* Must be called with factories lock! */
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static void
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gst_uri_source_bin_update_factories_list (GstURISourceBin * dec)
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{
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guint32 cookie;
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cookie = gst_registry_get_feature_list_cookie (gst_registry_get ());
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if (!dec->factories || dec->factories_cookie != cookie) {
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if (dec->factories)
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gst_plugin_feature_list_free (dec->factories);
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dec->factories =
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gst_element_factory_list_get_elements
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(GST_ELEMENT_FACTORY_TYPE_DECODABLE, GST_RANK_MARGINAL);
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dec->factories =
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g_list_sort (dec->factories, gst_playback_utils_compare_factories_func);
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dec->factories_cookie = cookie;
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}
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}
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static GValueArray *
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gst_uri_source_bin_autoplug_factories (GstElement * element, GstPad * pad,
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GstCaps * caps)
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{
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GList *list, *tmp;
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GValueArray *result;
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GstURISourceBin *dec = GST_URI_SOURCE_BIN_CAST (element);
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GST_DEBUG_OBJECT (element, "finding factories");
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/* return all compatible factories for caps */
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g_mutex_lock (&dec->factories_lock);
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gst_uri_source_bin_update_factories_list (dec);
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list =
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gst_element_factory_list_filter (dec->factories, caps, GST_PAD_SINK,
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gst_caps_is_fixed (caps));
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g_mutex_unlock (&dec->factories_lock);
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result = g_value_array_new (g_list_length (list));
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for (tmp = list; tmp; tmp = tmp->next) {
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GstElementFactory *factory = GST_ELEMENT_FACTORY_CAST (tmp->data);
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GValue val = { 0, };
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g_value_init (&val, G_TYPE_OBJECT);
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g_value_set_object (&val, factory);
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g_value_array_append (result, &val);
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g_value_unset (&val);
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}
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gst_plugin_feature_list_free (list);
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GST_DEBUG_OBJECT (element, "autoplug-factories returns %p", result);
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return result;
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}
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static GValueArray *
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gst_uri_source_bin_autoplug_sort (GstElement * element, GstPad * pad,
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GstCaps * caps, GValueArray * factories)
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{
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return NULL;
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}
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static GstAutoplugSelectResult
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gst_uri_source_bin_autoplug_select (GstElement * element, GstPad * pad,
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GstCaps * caps, GstElementFactory * factory)
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{
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GST_DEBUG_OBJECT (element, "default autoplug-select returns TRY");
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/* Try factory. */
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return GST_AUTOPLUG_SELECT_TRY;
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}
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static gboolean
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gst_uri_source_bin_autoplug_query (GstElement * element, GstPad * pad,
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GstQuery * query)
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{
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/* No query handled here */
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return FALSE;
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}
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static void
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gst_uri_source_bin_class_init (GstURISourceBinClass * klass)
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{
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GObjectClass *gobject_class;
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GstElementClass *gstelement_class;
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GstBinClass *gstbin_class;
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gobject_class = G_OBJECT_CLASS (klass);
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gstelement_class = GST_ELEMENT_CLASS (klass);
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gstbin_class = GST_BIN_CLASS (klass);
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gobject_class->set_property = gst_uri_source_bin_set_property;
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gobject_class->get_property = gst_uri_source_bin_get_property;
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gobject_class->finalize = gst_uri_source_bin_finalize;
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g_object_class_install_property (gobject_class, PROP_URI,
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g_param_spec_string ("uri", "URI", "URI to decode",
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DEFAULT_PROP_URI, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_SOURCE,
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g_param_spec_object ("source", "Source", "Source object used",
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GST_TYPE_ELEMENT, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CONNECTION_SPEED,
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g_param_spec_uint64 ("connection-speed", "Connection Speed",
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"Network connection speed in kbps (0 = unknown)",
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0, G_MAXUINT64 / 1000, DEFAULT_CONNECTION_SPEED,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_BUFFER_SIZE,
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g_param_spec_int ("buffer-size", "Buffer size (bytes)",
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"Buffer size when buffering streams (-1 default value)",
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-1, G_MAXINT, DEFAULT_BUFFER_SIZE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_BUFFER_DURATION,
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g_param_spec_int64 ("buffer-duration", "Buffer duration (ns)",
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"Buffer duration when buffering streams (-1 default value)",
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-1, G_MAXINT64, DEFAULT_BUFFER_DURATION,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
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* GstURISourceBin::download:
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*
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* For certain media type, enable download buffering.
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*/
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g_object_class_install_property (gobject_class, PROP_DOWNLOAD,
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g_param_spec_boolean ("download", "Download",
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"Attempt download buffering when buffering network streams",
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DEFAULT_DOWNLOAD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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/**
|
|
* GstURISourceBin::use-buffering:
|
|
*
|
|
* Perform buffering using a queue2 element, and emit BUFFERING
|
|
* messages based on low-/high-percent thresholds of streaming data,
|
|
* such as adaptive-demuxer streams.
|
|
*
|
|
* When download buffering is activated and used for the current media
|
|
* type, this property does nothing.
|
|
*
|
|
*/
|
|
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));
|
|
|
|
/**
|
|
* GstURISourceBin::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));
|
|
|
|
/**
|
|
* GstURISourceBin::unknown-type:
|
|
* @bin: The urisourcebin.
|
|
* @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 urisourcebin.
|
|
*/
|
|
gst_uri_source_bin_signals[SIGNAL_UNKNOWN_TYPE] =
|
|
g_signal_new ("unknown-type", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURISourceBinClass, unknown_type),
|
|
NULL, NULL, g_cclosure_marshal_generic, G_TYPE_NONE, 2,
|
|
GST_TYPE_PAD, GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstURISourceBin::autoplug-continue:
|
|
* @bin: The urisourcebin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps found.
|
|
*
|
|
* This signal is emitted whenever urisourcebin finds a new stream. It is
|
|
* emitted before looking for any elements that can handle that stream.
|
|
*
|
|
* <note>
|
|
* Invocation of signal handlers stops after the first signal handler
|
|
* returns #FALSE. Signal handlers are invoked in the order they were
|
|
* connected in.
|
|
* </note>
|
|
*
|
|
* Returns: #TRUE if you wish urisourcebin 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_source_bin_signals[SIGNAL_AUTOPLUG_CONTINUE] =
|
|
g_signal_new ("autoplug-continue", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURISourceBinClass,
|
|
autoplug_continue), _gst_boolean_accumulator, NULL,
|
|
g_cclosure_marshal_generic, G_TYPE_BOOLEAN, 2, GST_TYPE_PAD,
|
|
GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstURISourceBin::autoplug-factories:
|
|
* @bin: The urisourcebin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps found.
|
|
*
|
|
* This function is emitted when an array of possible factories for @caps on
|
|
* @pad is needed. urisourcebin will by default return an array with all
|
|
* compatible factories, sorted by rank.
|
|
*
|
|
* If this function returns NULL, @pad will be exposed as a final caps.
|
|
*
|
|
* If this function returns an empty array, the pad will be considered as
|
|
* having an unhandled type media type.
|
|
*
|
|
* <note>
|
|
* Only the signal handler that is connected first will ever by invoked.
|
|
* Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
|
|
* signal, they will never be invoked!
|
|
* </note>
|
|
*
|
|
* Returns: a #GValueArray* with a list of factories to try. The factories are
|
|
* by default tried in the returned order or based on the index returned by
|
|
* "autoplug-select".
|
|
*/
|
|
gst_uri_source_bin_signals[SIGNAL_AUTOPLUG_FACTORIES] =
|
|
g_signal_new ("autoplug-factories", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURISourceBinClass,
|
|
autoplug_factories), _gst_array_accumulator, NULL,
|
|
g_cclosure_marshal_generic, G_TYPE_VALUE_ARRAY, 2,
|
|
GST_TYPE_PAD, GST_TYPE_CAPS);
|
|
|
|
/**
|
|
* GstURISourceBin::autoplug-sort:
|
|
* @bin: The urisourcebin.
|
|
* @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 emited. The purpose of the signal is for
|
|
* the application to perform additional sorting or filtering on the element
|
|
* factory array.
|
|
*
|
|
* The callee should copy and modify @factories or return #NULL if the
|
|
* order should not change.
|
|
*
|
|
* <note>
|
|
* Invocation of signal handlers stops after one signal handler has
|
|
* returned something else than #NULL. Signal handlers are invoked in
|
|
* the order they were connected in.
|
|
* Don't connect signal handlers with the #G_CONNECT_AFTER flag to this
|
|
* signal, they will never be invoked!
|
|
* </note>
|
|
*
|
|
* Returns: A new sorted array of #GstElementFactory objects.
|
|
*
|
|
* Since: 0.10.33
|
|
*/
|
|
gst_uri_source_bin_signals[SIGNAL_AUTOPLUG_SORT] =
|
|
g_signal_new ("autoplug-sort", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURISourceBinClass, autoplug_sort),
|
|
_gst_array_hasvalue_accumulator, NULL,
|
|
g_cclosure_marshal_generic, G_TYPE_VALUE_ARRAY, 3, GST_TYPE_PAD,
|
|
GST_TYPE_CAPS, G_TYPE_VALUE_ARRAY | G_SIGNAL_TYPE_STATIC_SCOPE);
|
|
|
|
/**
|
|
* GstURISourceBin::autoplug-select:
|
|
* @bin: The urisourcebin.
|
|
* @pad: The #GstPad.
|
|
* @caps: The #GstCaps.
|
|
* @factory: A #GstElementFactory to use.
|
|
*
|
|
* This signal is emitted once urisourcebin 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 #GST_TYPE_AUTOPLUG_SELECT_RESULT enum
|
|
* value indicating what decodebin should do next.
|
|
*
|
|
* A value of #GST_AUTOPLUG_SELECT_TRY will try to autoplug an element from
|
|
* @factory.
|
|
*
|
|
* A value of #GST_AUTOPLUG_SELECT_EXPOSE will expose @pad without plugging
|
|
* any element to it.
|
|
*
|
|
* A value of #GST_AUTOPLUG_SELECT_SKIP will skip @factory and move to the
|
|
* next factory.
|
|
*
|
|
* <note>
|
|
* 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.
|
|
* </note>
|
|
*
|
|
* Returns: a #GST_TYPE_AUTOPLUG_SELECT_RESULT that indicates the required
|
|
* operation. The default handler will always return
|
|
* #GST_AUTOPLUG_SELECT_TRY.
|
|
*/
|
|
gst_uri_source_bin_signals[SIGNAL_AUTOPLUG_SELECT] =
|
|
g_signal_new ("autoplug-select", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURISourceBinClass,
|
|
autoplug_select), _gst_select_accumulator, NULL,
|
|
g_cclosure_marshal_generic,
|
|
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_source_bin_signals[SIGNAL_AUTOPLUG_QUERY] =
|
|
g_signal_new ("autoplug-query", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstURISourceBinClass, autoplug_query),
|
|
_gst_boolean_or_accumulator, NULL, g_cclosure_marshal_generic,
|
|
G_TYPE_BOOLEAN, 3, GST_TYPE_PAD, GST_TYPE_ELEMENT,
|
|
GST_TYPE_QUERY | G_SIGNAL_TYPE_STATIC_SCOPE);
|
|
|
|
/**
|
|
* GstURISourceBin::drained:
|
|
*
|
|
* This signal is emitted when the data for the current uri is played.
|
|
*/
|
|
gst_uri_source_bin_signals[SIGNAL_DRAINED] =
|
|
g_signal_new ("drained", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST,
|
|
G_STRUCT_OFFSET (GstURISourceBinClass, drained), NULL, NULL,
|
|
g_cclosure_marshal_generic, G_TYPE_NONE, 0, G_TYPE_NONE);
|
|
|
|
/**
|
|
* GstURISourceBin::source-setup:
|
|
* @bin: the urisourcebin.
|
|
* @source: source element
|
|
*
|
|
* This signal is emitted after the source element has been created, so
|
|
* it can be configured by setting additional properties (e.g. set a
|
|
* proxy server for an http source, or set the device and read speed for
|
|
* an audio cd source). This is functionally equivalent to connecting to
|
|
* the notify::source signal, but more convenient.
|
|
*
|
|
* Since: 1.6.1
|
|
*/
|
|
gst_uri_source_bin_signals[SIGNAL_SOURCE_SETUP] =
|
|
g_signal_new ("source-setup", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, 0, NULL, NULL,
|
|
g_cclosure_marshal_generic, G_TYPE_NONE, 1, GST_TYPE_ELEMENT);
|
|
|
|
gst_element_class_add_pad_template (gstelement_class,
|
|
gst_static_pad_template_get (&srctemplate));
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"URI reader", "Generic/Bin/Source",
|
|
"Download and buffer a URI as needed",
|
|
"Jan Schmidt <jan@centricular.com>");
|
|
|
|
gstelement_class->query = GST_DEBUG_FUNCPTR (gst_uri_source_bin_query);
|
|
gstelement_class->change_state =
|
|
GST_DEBUG_FUNCPTR (gst_uri_source_bin_change_state);
|
|
|
|
gstbin_class->handle_message = GST_DEBUG_FUNCPTR (handle_message);
|
|
|
|
klass->autoplug_continue =
|
|
GST_DEBUG_FUNCPTR (gst_uri_source_bin_autoplug_continue);
|
|
klass->autoplug_factories =
|
|
GST_DEBUG_FUNCPTR (gst_uri_source_bin_autoplug_factories);
|
|
klass->autoplug_sort = GST_DEBUG_FUNCPTR (gst_uri_source_bin_autoplug_sort);
|
|
klass->autoplug_select =
|
|
GST_DEBUG_FUNCPTR (gst_uri_source_bin_autoplug_select);
|
|
klass->autoplug_query = GST_DEBUG_FUNCPTR (gst_uri_source_bin_autoplug_query);
|
|
}
|
|
|
|
static void
|
|
gst_uri_source_bin_init (GstURISourceBin * urisrc)
|
|
{
|
|
/* first filter out the interesting element factories */
|
|
g_mutex_init (&urisrc->factories_lock);
|
|
|
|
g_mutex_init (&urisrc->lock);
|
|
|
|
urisrc->uri = g_strdup (DEFAULT_PROP_URI);
|
|
urisrc->connection_speed = DEFAULT_CONNECTION_SPEED;
|
|
|
|
urisrc->buffer_duration = DEFAULT_BUFFER_DURATION;
|
|
urisrc->buffer_size = DEFAULT_BUFFER_SIZE;
|
|
urisrc->download = DEFAULT_DOWNLOAD;
|
|
urisrc->ring_buffer_max_size = DEFAULT_RING_BUFFER_MAX_SIZE;
|
|
urisrc->last_buffering_pct = -1;
|
|
|
|
GST_OBJECT_FLAG_SET (urisrc, GST_ELEMENT_FLAG_SOURCE);
|
|
gst_bin_set_suppressed_flags (GST_BIN (urisrc),
|
|
GST_ELEMENT_FLAG_SOURCE | GST_ELEMENT_FLAG_SINK);
|
|
}
|
|
|
|
static void
|
|
gst_uri_source_bin_finalize (GObject * obj)
|
|
{
|
|
GstURISourceBin *urisrc = GST_URI_SOURCE_BIN (obj);
|
|
|
|
remove_demuxer (urisrc);
|
|
g_mutex_clear (&urisrc->lock);
|
|
g_mutex_clear (&urisrc->factories_lock);
|
|
g_free (urisrc->uri);
|
|
if (urisrc->factories)
|
|
gst_plugin_feature_list_free (urisrc->factories);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (obj);
|
|
}
|
|
|
|
static void
|
|
gst_uri_source_bin_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstURISourceBin *dec = GST_URI_SOURCE_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_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_RING_BUFFER_MAX_SIZE:
|
|
dec->ring_buffer_max_size = g_value_get_uint64 (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_uri_source_bin_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstURISourceBin *dec = GST_URI_SOURCE_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_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_RING_BUFFER_MAX_SIZE:
|
|
g_value_set_uint64 (value, dec->ring_buffer_max_size);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
do_async_start (GstURISourceBin * 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 (GstURISourceBin * 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 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;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
pending_pad_blocked (GstPad * pad, GstPadProbeInfo * info, gpointer user_data);
|
|
|
|
static GstPadProbeReturn
|
|
demux_pad_events (GstPad * pad, GstPadProbeInfo * info, gpointer user_data);
|
|
|
|
static void
|
|
free_child_src_pad_info (ChildSrcPadInfo * info)
|
|
{
|
|
if (info->cur_caps)
|
|
gst_caps_unref (info->cur_caps);
|
|
g_free (info);
|
|
}
|
|
|
|
/* Called by the signal handlers when a demuxer has produced a new stream */
|
|
static void
|
|
new_demuxer_pad_added_cb (GstElement * element, GstPad * pad,
|
|
GstURISourceBin * urisrc)
|
|
{
|
|
ChildSrcPadInfo *info;
|
|
|
|
info = g_new0 (ChildSrcPadInfo, 1);
|
|
info->demux_src_pad = pad;
|
|
info->cur_caps = gst_pad_get_current_caps (pad);
|
|
if (info->cur_caps == NULL)
|
|
info->cur_caps = gst_pad_query_caps (pad, NULL);
|
|
|
|
g_object_set_data_full (G_OBJECT (pad), "urisourcebin.srcpadinfo",
|
|
info, (GDestroyNotify) free_child_src_pad_info);
|
|
|
|
GST_DEBUG_OBJECT (element, "new demuxer pad, name: <%s>. "
|
|
"Added as pending pad with caps %" GST_PTR_FORMAT,
|
|
GST_PAD_NAME (pad), info->cur_caps);
|
|
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
urisrc->pending_pads = g_list_prepend (urisrc->pending_pads, pad);
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
|
|
/* Block the pad. On the first data on that pad if it hasn't
|
|
* been linked to an output slot, we'll create one */
|
|
info->blocking_probe_id =
|
|
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM,
|
|
pending_pad_blocked, urisrc, NULL);
|
|
info->event_probe_id =
|
|
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
|
|
demux_pad_events, urisrc, NULL);
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
pending_pad_blocked (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
|
|
{
|
|
ChildSrcPadInfo *child_info;
|
|
OutputSlotInfo *slot;
|
|
GstURISourceBin *urisrc = GST_URI_SOURCE_BIN (user_data);
|
|
GstCaps *caps;
|
|
|
|
if (!(child_info =
|
|
g_object_get_data (G_OBJECT (pad), "urisourcebin.srcpadinfo")))
|
|
goto done;
|
|
|
|
GST_LOG_OBJECT (urisrc, "Removing pad %" GST_PTR_FORMAT " from pending list",
|
|
pad);
|
|
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
|
|
/* Once blocked, this pad is no longer pending, one way or another */
|
|
urisrc->pending_pads = g_list_remove (urisrc->pending_pads, pad);
|
|
|
|
/* If already linked to a slot, nothing more to do */
|
|
if (child_info->output_slot) {
|
|
GST_LOG_OBJECT (urisrc, "Pad %" GST_PTR_FORMAT " is linked to slot %p",
|
|
pad, child_info->output_slot);
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
goto done;
|
|
}
|
|
|
|
caps = gst_pad_get_current_caps (pad);
|
|
if (caps == NULL)
|
|
caps = gst_pad_query_caps (pad, NULL);
|
|
|
|
/* FIXME: Don't do buffering if use_buffering is FALSE */
|
|
slot = get_output_slot (urisrc, FALSE, TRUE, caps);
|
|
|
|
gst_caps_unref (caps);
|
|
|
|
if (slot == NULL) {
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
goto done;
|
|
}
|
|
|
|
GST_LOG_OBJECT (urisrc, "Pad %" GST_PTR_FORMAT " linked to slot %p", pad,
|
|
slot);
|
|
|
|
child_info->output_slot = slot;
|
|
slot->linked_info = child_info;
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
|
|
gst_pad_link (pad, slot->sinkpad);
|
|
|
|
expose_output_pad (urisrc, slot->srcpad);
|
|
|
|
done:
|
|
return GST_PAD_PROBE_REMOVE;
|
|
}
|
|
|
|
/* Called with LOCK held */
|
|
/* Looks for a suitable pending pad to connect onto this
|
|
* finishing output slot that's about to EOS */
|
|
static gboolean
|
|
link_pending_pad_to_output (GstURISourceBin * urisrc, OutputSlotInfo * slot)
|
|
{
|
|
GList *cur;
|
|
ChildSrcPadInfo *in_info = slot->linked_info;
|
|
ChildSrcPadInfo *out_info = NULL;
|
|
gboolean res = FALSE;
|
|
GstCaps *cur_caps;
|
|
|
|
/* Look for a suitable pending pad */
|
|
cur_caps = gst_pad_get_current_caps (slot->sinkpad);
|
|
|
|
for (cur = urisrc->pending_pads; cur != NULL; cur = g_list_next (cur)) {
|
|
GstPad *pending = (GstPad *) (cur->data);
|
|
ChildSrcPadInfo *cur_info = NULL;
|
|
if ((cur_info =
|
|
g_object_get_data (G_OBJECT (pending),
|
|
"urisourcebin.srcpadinfo"))) {
|
|
/* Don't re-link to the same pad in case of EOS while still pending */
|
|
if (in_info == cur_info)
|
|
continue;
|
|
if (cur_caps == NULL || gst_caps_is_equal (cur_caps, cur_info->cur_caps)) {
|
|
GST_DEBUG_OBJECT (urisrc, "Found suitable pending pad %" GST_PTR_FORMAT
|
|
" with caps %" GST_PTR_FORMAT " to link to this output slot",
|
|
cur_info->demux_src_pad, cur_info->cur_caps);
|
|
out_info = cur_info;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (cur_caps)
|
|
gst_caps_unref (cur_caps);
|
|
|
|
if (out_info) {
|
|
/* Block any upstream stuff while we switch out the pad */
|
|
guint block_id =
|
|
gst_pad_add_probe (slot->sinkpad, GST_PAD_PROBE_TYPE_BLOCK_UPSTREAM,
|
|
NULL, NULL, NULL);
|
|
GST_DEBUG_OBJECT (urisrc, "Linking pending pad to existing output slot %p",
|
|
slot);
|
|
|
|
if (in_info) {
|
|
gst_pad_unlink (in_info->demux_src_pad, slot->sinkpad);
|
|
in_info->output_slot = NULL;
|
|
slot->linked_info = NULL;
|
|
}
|
|
|
|
if (gst_pad_link (out_info->demux_src_pad,
|
|
slot->sinkpad) == GST_PAD_LINK_OK) {
|
|
out_info->output_slot = slot;
|
|
slot->linked_info = out_info;
|
|
res = TRUE;
|
|
} else {
|
|
GST_ERROR_OBJECT (urisrc,
|
|
"Failed to link new demuxer pad to the output slot we tried");
|
|
}
|
|
gst_pad_remove_probe (slot->sinkpad, block_id);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
demux_pad_events (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
|
|
{
|
|
GstURISourceBin *urisrc = GST_URI_SOURCE_BIN (user_data);
|
|
ChildSrcPadInfo *child_info;
|
|
|
|
if (!(child_info =
|
|
g_object_get_data (G_OBJECT (pad), "urisourcebin.srcpadinfo")))
|
|
goto done;
|
|
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
/* If not linked to a slot, nothing more to do */
|
|
if (child_info->output_slot == NULL) {
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
goto done;
|
|
}
|
|
|
|
if (GST_IS_EVENT (GST_PAD_PROBE_INFO_DATA (info))) {
|
|
GstEvent *ev = GST_PAD_PROBE_INFO_EVENT (info);
|
|
if (GST_EVENT_TYPE (ev) == GST_EVENT_EOS && urisrc->pending_pads) {
|
|
GST_LOG_OBJECT (urisrc, "EOS on pad %" GST_PTR_FORMAT, pad);
|
|
if (!link_pending_pad_to_output (urisrc, child_info->output_slot)) {
|
|
GstEvent *event;
|
|
GstStructure *s;
|
|
|
|
/* Mark that we fed an EOS to this slot */
|
|
child_info->output_slot->is_eos = TRUE;
|
|
|
|
/* Actually feed a custom EOS event to avoid marking pads as EOSed */
|
|
s = gst_structure_new_empty ("urisourcebin-custom-eos");
|
|
event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
|
|
gst_pad_send_event (child_info->output_slot->sinkpad, event);
|
|
}
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
return GST_PAD_PROBE_HANDLED;
|
|
} else if (GST_EVENT_TYPE (ev) == GST_EVENT_CAPS) {
|
|
GstCaps *caps;
|
|
gst_event_parse_caps (ev, &caps);
|
|
gst_caps_replace (&child_info->cur_caps, caps);
|
|
}
|
|
}
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
|
|
done:
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
/* Called with lock held */
|
|
static OutputSlotInfo *
|
|
get_output_slot (GstURISourceBin * urisrc, gboolean do_download,
|
|
gboolean is_adaptive, GstCaps * caps)
|
|
{
|
|
OutputSlotInfo *slot;
|
|
GstPad *srcpad;
|
|
GstElement *queue;
|
|
const gchar *elem_name;
|
|
|
|
/* If we have caps, iterate the existing slots and look for an
|
|
* unlinked one that can be used */
|
|
if (caps && gst_caps_is_fixed (caps)) {
|
|
GSList *cur;
|
|
GstCaps *cur_caps;
|
|
|
|
for (cur = urisrc->out_slots; cur != NULL; cur = g_slist_next (cur)) {
|
|
slot = (OutputSlotInfo *) (cur->data);
|
|
if (slot->linked_info == NULL) {
|
|
cur_caps = gst_pad_get_current_caps (slot->sinkpad);
|
|
if (cur_caps == NULL || gst_caps_is_equal (caps, cur_caps)) {
|
|
GST_LOG_OBJECT (urisrc, "Found existing slot %p to link to", slot);
|
|
gst_caps_unref (cur_caps);
|
|
return slot;
|
|
}
|
|
gst_caps_unref (cur_caps);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Otherwise create the new slot */
|
|
#if 0 /* There's no downloadbuffer in 1.2 */
|
|
if (do_download)
|
|
elem_name = "downloadbuffer";
|
|
else
|
|
#endif
|
|
elem_name = "queue2";
|
|
|
|
queue = gst_element_factory_make (elem_name, NULL);
|
|
if (!queue)
|
|
goto no_buffer_element;
|
|
|
|
slot = g_new0 (OutputSlotInfo, 1);
|
|
slot->queue = queue;
|
|
|
|
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 (urisrc, "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 {
|
|
if (is_adaptive) {
|
|
GST_LOG_OBJECT (urisrc, "Adding queue for adaptive streaming stream");
|
|
g_object_set (queue, "use-buffering", TRUE, "use-tags-bitrate", TRUE,
|
|
"use-rate-estimate", FALSE, NULL);
|
|
} else {
|
|
GST_LOG_OBJECT (urisrc, "Adding queue for buffering");
|
|
g_object_set (queue, "use-buffering", TRUE, NULL);
|
|
}
|
|
g_object_set (queue, "ring-buffer-max-size",
|
|
urisrc->ring_buffer_max_size, NULL);
|
|
/* Disable max-size-buffers - queue based on data rate to the default time limit */
|
|
g_object_set (queue, "max-size-buffers", 0, NULL);
|
|
}
|
|
|
|
/* If buffer size or duration are set, set them on the element */
|
|
if (urisrc->buffer_size != -1)
|
|
g_object_set (queue, "max-size-bytes", urisrc->buffer_size, NULL);
|
|
if (urisrc->buffer_duration != -1)
|
|
g_object_set (queue, "max-size-time", urisrc->buffer_duration, NULL);
|
|
else {
|
|
/* Buffer 4 seconds by default - some extra headroom over the
|
|
* core default, because we trigger playback sooner */
|
|
g_object_set (queue, "max-size-time", 4 * GST_SECOND, NULL);
|
|
}
|
|
|
|
/* Don't start buffering until the queue is empty (< 1%).
|
|
* Start playback when the queue is 60% full, leaving a bit more room
|
|
* for upstream to push more without getting bursty */
|
|
g_object_set (queue, "low-percent", 1, "high-percent", 60, NULL);
|
|
|
|
/* save queue pointer so we can remove it later */
|
|
urisrc->out_slots = g_slist_prepend (urisrc->out_slots, slot);
|
|
|
|
gst_bin_add (GST_BIN_CAST (urisrc), queue);
|
|
gst_element_sync_state_with_parent (queue);
|
|
|
|
slot->sinkpad = gst_element_get_static_pad (queue, "sink");
|
|
|
|
/* get the new raw srcpad */
|
|
srcpad = gst_element_get_static_pad (queue, "src");
|
|
g_object_set_data (G_OBJECT (srcpad), "urisourcebin.slotinfo", slot);
|
|
|
|
slot->srcpad = create_output_pad (urisrc, srcpad);
|
|
|
|
gst_object_unref (srcpad);
|
|
|
|
return slot;
|
|
|
|
no_buffer_element:
|
|
{
|
|
post_missing_plugin_error (GST_ELEMENT_CAST (urisrc), elem_name);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
source_pad_event_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
gpointer user_data)
|
|
{
|
|
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
|
|
GstURISourceBin *urisrc = user_data;
|
|
|
|
GST_LOG_OBJECT (pad, "%s, urisrc %p", GST_EVENT_TYPE_NAME (event), urisrc);
|
|
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_CUSTOM_DOWNSTREAM &&
|
|
gst_event_has_name (event, "urisourcebin-custom-eos")) {
|
|
OutputSlotInfo *slot;
|
|
GST_DEBUG_OBJECT (pad, "we received EOS");
|
|
|
|
/* Check the slot is still unlinked - maybe it got
|
|
* re-linked and we should drop this EOS */
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
slot = g_object_get_data (G_OBJECT (pad), "urisourcebin.slotinfo");
|
|
if (slot && slot->linked_info) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"EOS pad was re-linked to pending pad, so removing EOS status");
|
|
slot->is_eos = FALSE;
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
return GST_PAD_PROBE_HANDLED;
|
|
}
|
|
|
|
/* Otherwise it's time to send EOS and clean up this pad */
|
|
gst_pad_push_event (slot->srcpad, gst_event_new_eos ());
|
|
|
|
/* FIXME: Can't clean the pad up from the streaming thread... */
|
|
urisrc->out_slots = g_slist_remove (urisrc->out_slots, slot);
|
|
#if 0
|
|
free_output_slot (slot, urisrc);
|
|
slot = NULL;
|
|
#endif
|
|
|
|
/* FIXME: Only emit drained if all output pads are done and there's no
|
|
* pending pads */
|
|
g_signal_emit (urisrc, gst_uri_source_bin_signals[SIGNAL_DRAINED], 0, NULL);
|
|
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
return GST_PAD_PROBE_HANDLED;
|
|
}
|
|
/* never drop events */
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
/* called when we found a raw pad to expose. We set up a
|
|
* padprobe to detect EOS before exposing the pad.
|
|
* Called with LOCK held. */
|
|
static GstPad *
|
|
create_output_pad (GstURISourceBin * urisrc, GstPad * pad)
|
|
{
|
|
GstPad *newpad;
|
|
GstPadTemplate *pad_tmpl;
|
|
gchar *padname;
|
|
|
|
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM,
|
|
source_pad_event_probe, urisrc, NULL);
|
|
|
|
pad_tmpl = gst_static_pad_template_get (&srctemplate);
|
|
|
|
padname = g_strdup_printf ("src_%u", urisrc->numpads);
|
|
urisrc->numpads++;
|
|
|
|
newpad = gst_ghost_pad_new_from_template (padname, pad, pad_tmpl);
|
|
gst_object_unref (pad_tmpl);
|
|
g_free (padname);
|
|
|
|
return newpad;
|
|
}
|
|
|
|
static void
|
|
expose_output_pad (GstURISourceBin * urisrc, GstPad * pad)
|
|
{
|
|
GstPad *target;
|
|
|
|
if (gst_object_has_as_parent (GST_OBJECT (pad), GST_OBJECT (urisrc)))
|
|
return; /* Pad is already exposed */
|
|
|
|
target = gst_ghost_pad_get_target (GST_GHOST_PAD (pad));
|
|
|
|
gst_pad_sticky_events_foreach (target, copy_sticky_events, pad);
|
|
gst_object_unref (target);
|
|
|
|
gst_pad_set_active (pad, TRUE);
|
|
gst_element_add_pad (GST_ELEMENT_CAST (urisrc), pad);
|
|
|
|
/* Once we expose a pad, we're no longer async */
|
|
do_async_done (urisrc);
|
|
}
|
|
|
|
static void
|
|
pad_removed_cb (GstElement * element, GstPad * pad, GstURISourceBin * urisrc)
|
|
{
|
|
ChildSrcPadInfo *info;
|
|
|
|
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 (!(info = g_object_get_data (G_OBJECT (pad), "urisourcebin.srcpadinfo")))
|
|
goto no_info;
|
|
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
/* Make sure this isn't in the pending pads list */
|
|
urisrc->pending_pads = g_list_remove (urisrc->pending_pads, pad);
|
|
|
|
/* Send EOS to the output slot if the demuxer didn't already */
|
|
if (info->output_slot) {
|
|
if (!info->output_slot->is_eos) {
|
|
GstStructure *s;
|
|
GstEvent *event;
|
|
|
|
GST_LOG_OBJECT (element,
|
|
"Pad %" GST_PTR_FORMAT " was removed without EOS. Sending.", pad);
|
|
|
|
s = gst_structure_new_empty ("urisourcebin-custom-eos");
|
|
event = gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM, s);
|
|
gst_pad_send_event (info->output_slot->sinkpad, event);
|
|
info->output_slot->is_eos = TRUE;
|
|
}
|
|
/* After the pad goes away, the slot is free to reuse */
|
|
info->output_slot->linked_info = NULL;
|
|
info->output_slot = NULL;
|
|
} else {
|
|
GST_LOG_OBJECT (urisrc, "Removed pad has no output slot");
|
|
}
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
|
|
return;
|
|
|
|
/* ERRORS */
|
|
no_info:
|
|
{
|
|
GST_WARNING_OBJECT (element, "no info found for pad");
|
|
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.
|
|
*/
|
|
static GstElement *
|
|
gen_source_element (GstURISourceBin * urisrc)
|
|
{
|
|
GObjectClass *source_class;
|
|
GstElement *source;
|
|
GParamSpec *pspec;
|
|
GstQuery *query;
|
|
GstSchedulingFlags flags;
|
|
GError *err = NULL;
|
|
|
|
if (!urisrc->uri)
|
|
goto no_uri;
|
|
|
|
GST_LOG_OBJECT (urisrc, "finding source for %s", urisrc->uri);
|
|
|
|
if (!gst_uri_is_valid (urisrc->uri))
|
|
goto invalid_uri;
|
|
|
|
if (IS_BLACKLISTED_URI (urisrc->uri))
|
|
goto uri_blacklisted;
|
|
|
|
source = gst_element_make_from_uri (GST_URI_SRC, urisrc->uri, "source", &err);
|
|
if (!source)
|
|
goto no_source;
|
|
|
|
GST_LOG_OBJECT (urisrc, "found source type %s", G_OBJECT_TYPE_NAME (source));
|
|
|
|
query = gst_query_new_scheduling ();
|
|
if (gst_element_query (source, query)) {
|
|
gst_query_parse_scheduling (query, &flags, NULL, NULL, NULL);
|
|
urisrc->is_stream = flags & GST_SCHEDULING_FLAG_BANDWIDTH_LIMITED;
|
|
} else
|
|
urisrc->is_stream = IS_STREAM_URI (urisrc->uri);
|
|
gst_query_unref (query);
|
|
|
|
GST_LOG_OBJECT (urisrc, "source is stream: %d", urisrc->is_stream);
|
|
|
|
urisrc->need_queue = IS_QUEUE_URI (urisrc->uri);
|
|
GST_LOG_OBJECT (urisrc, "source needs queue: %d", urisrc->need_queue);
|
|
|
|
source_class = G_OBJECT_GET_CLASS (source);
|
|
|
|
pspec = g_object_class_find_property (source_class, "connection-speed");
|
|
if (pspec != NULL) {
|
|
guint64 speed = urisrc->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 (urisrc,
|
|
"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 (urisrc,
|
|
"setting connection-speed=%" G_GUINT64_FORMAT " to source element",
|
|
speed);
|
|
}
|
|
}
|
|
|
|
return source;
|
|
|
|
/* ERRORS */
|
|
no_uri:
|
|
{
|
|
GST_ELEMENT_ERROR (urisrc, RESOURCE, NOT_FOUND,
|
|
(_("No URI specified to play from.")), (NULL));
|
|
return NULL;
|
|
}
|
|
invalid_uri:
|
|
{
|
|
GST_ELEMENT_ERROR (urisrc, RESOURCE, NOT_FOUND,
|
|
(_("Invalid URI \"%s\"."), urisrc->uri), (NULL));
|
|
g_clear_error (&err);
|
|
return NULL;
|
|
}
|
|
uri_blacklisted:
|
|
{
|
|
GST_ELEMENT_ERROR (urisrc, 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 (urisrc->uri);
|
|
if (prot == NULL)
|
|
goto invalid_uri;
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (urisrc),
|
|
gst_missing_uri_source_message_new (GST_ELEMENT (urisrc), prot));
|
|
|
|
GST_ELEMENT_ERROR (urisrc, CORE, MISSING_PLUGIN,
|
|
(_("No URI handler implemented for \"%s\"."), prot), (NULL));
|
|
|
|
g_free (prot);
|
|
} else {
|
|
GST_ELEMENT_ERROR (urisrc, RESOURCE, NOT_FOUND,
|
|
("%s", (err) ? err->message : "URI was not accepted by any element"),
|
|
("No element accepted URI '%s'", urisrc->uri));
|
|
}
|
|
|
|
g_clear_error (&err);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
is_all_raw_caps (GstCaps * caps, GstCaps * rawcaps, gboolean * all_raw)
|
|
{
|
|
GstCaps *intersection;
|
|
gint capssize;
|
|
gboolean res = FALSE;
|
|
|
|
if (caps == NULL)
|
|
return FALSE;
|
|
|
|
capssize = gst_caps_get_size (caps);
|
|
/* no caps, skip and move to the next pad */
|
|
if (capssize == 0 || gst_caps_is_empty (caps) || gst_caps_is_any (caps))
|
|
goto done;
|
|
|
|
intersection = gst_caps_intersect (caps, rawcaps);
|
|
*all_raw = !gst_caps_is_empty (intersection)
|
|
&& (gst_caps_get_size (intersection) == capssize);
|
|
gst_caps_unref (intersection);
|
|
|
|
res = TRUE;
|
|
|
|
done:
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* has_all_raw_caps:
|
|
* @pad: a #GstPad
|
|
* @all_raw: pointer to hold the result
|
|
*
|
|
* check if the caps of the pad are all raw. The caps are all raw if
|
|
* all of its structures contain audio/x-raw or video/x-raw.
|
|
*
|
|
* Returns: %FALSE @pad has no caps. Else TRUE and @all_raw set t the result.
|
|
*/
|
|
static gboolean
|
|
has_all_raw_caps (GstPad * pad, GstCaps * rawcaps, gboolean * all_raw)
|
|
{
|
|
GstCaps *caps;
|
|
gboolean res = FALSE;
|
|
|
|
caps = gst_pad_query_caps (pad, NULL);
|
|
|
|
GST_DEBUG_OBJECT (pad, "have caps %" GST_PTR_FORMAT, caps);
|
|
|
|
res = is_all_raw_caps (caps, rawcaps, all_raw);
|
|
|
|
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_SOURCE_BIN (dec));
|
|
}
|
|
|
|
/**
|
|
* analyse_source:
|
|
* @urisrc: a #GstURISourceBin
|
|
* @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 @urisrc 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 @urisrc
|
|
*
|
|
* @have_out: will be set to TRUE if the source has output pads.
|
|
*
|
|
* @is_dynamic: TRUE if the element will create (more) pads dynamically later
|
|
* on.
|
|
*
|
|
* Returns: FALSE if a fatal error occured while scanning.
|
|
*/
|
|
static gboolean
|
|
analyse_source (GstURISourceBin * urisrc, gboolean * is_raw,
|
|
gboolean * have_out, gboolean * is_dynamic, gboolean use_queue)
|
|
{
|
|
GstIterator *pads_iter;
|
|
gboolean done = FALSE;
|
|
gboolean res = TRUE;
|
|
GstPad *pad;
|
|
GValue item = { 0, };
|
|
GstCaps *rawcaps = DEFAULT_CAPS;
|
|
|
|
*have_out = FALSE;
|
|
*is_raw = FALSE;
|
|
*is_dynamic = FALSE;
|
|
|
|
pads_iter = gst_element_iterate_src_pads (urisrc->source);
|
|
while (!done) {
|
|
switch (gst_iterator_next (pads_iter, &item)) {
|
|
case GST_ITERATOR_ERROR:
|
|
res = FALSE;
|
|
/* FALLTROUGH */
|
|
case GST_ITERATOR_DONE:
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_RESYNC:
|
|
/* reset results and resync */
|
|
*have_out = FALSE;
|
|
*is_raw = FALSE;
|
|
*is_dynamic = FALSE;
|
|
gst_iterator_resync (pads_iter);
|
|
break;
|
|
case GST_ITERATOR_OK:
|
|
pad = g_value_dup_object (&item);
|
|
/* we now officially have an ouput pad */
|
|
*have_out = TRUE;
|
|
|
|
/* if FALSE, this pad has no caps and we continue with the next pad. */
|
|
if (!has_all_raw_caps (pad, rawcaps, is_raw)) {
|
|
gst_object_unref (pad);
|
|
g_value_reset (&item);
|
|
break;
|
|
}
|
|
|
|
/* caps on source pad are all raw, we can add the pad */
|
|
if (*is_raw) {
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
if (use_queue) {
|
|
OutputSlotInfo *slot = get_output_slot (urisrc, FALSE, FALSE, NULL);
|
|
if (slot)
|
|
goto no_slot;
|
|
|
|
gst_pad_link (pad, slot->sinkpad);
|
|
|
|
/* get the new raw srcpad */
|
|
gst_object_unref (pad);
|
|
pad = slot->srcpad;
|
|
} else {
|
|
pad = create_output_pad (urisrc, pad);
|
|
}
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
expose_output_pad (urisrc, pad);
|
|
gst_object_unref (pad);
|
|
}
|
|
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 (urisrc->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_slot:
|
|
{
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
gst_object_unref (pad);
|
|
g_value_unset (&item);
|
|
gst_iterator_free (pads_iter);
|
|
gst_caps_unref (rawcaps);
|
|
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* Remove any adaptive demuxer element */
|
|
static void
|
|
remove_demuxer (GstURISourceBin * bin)
|
|
{
|
|
if (bin->demuxer) {
|
|
GST_DEBUG_OBJECT (bin, "removing old demuxer element");
|
|
gst_element_set_state (bin->demuxer, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (bin), bin->demuxer);
|
|
bin->demuxer = NULL;
|
|
}
|
|
}
|
|
|
|
/* make a demuxer and connect to all the signals */
|
|
static GstElement *
|
|
make_demuxer (GstURISourceBin * urisrc, GstCaps * caps)
|
|
{
|
|
GList *factories, *eligible, *cur;
|
|
GstElement *demuxer = NULL;
|
|
|
|
GST_LOG_OBJECT (urisrc, "making new adaptive demuxer");
|
|
|
|
/* now create the demuxer element */
|
|
|
|
/* FIXME: Fire a signal to get the demuxer? */
|
|
factories = gst_element_factory_list_get_elements
|
|
(GST_ELEMENT_FACTORY_TYPE_DEMUXER, GST_RANK_MARGINAL);
|
|
eligible =
|
|
gst_element_factory_list_filter (factories, caps, GST_PAD_SINK,
|
|
gst_caps_is_fixed (caps));
|
|
gst_plugin_feature_list_free (factories);
|
|
|
|
if (eligible == NULL)
|
|
goto no_demuxer;
|
|
|
|
eligible = g_list_sort (eligible, gst_plugin_feature_rank_compare_func);
|
|
|
|
for (cur = eligible; cur != NULL; cur = g_list_next (cur)) {
|
|
GstElementFactory *factory = (GstElementFactory *) (cur->data);
|
|
const gchar *klass =
|
|
gst_element_factory_get_metadata (factory, GST_ELEMENT_METADATA_KLASS);
|
|
|
|
/* Can't be a demuxer unless it has Demux in the klass name */
|
|
if (!strstr (klass, "Demux") || !strstr (klass, "Adaptive"))
|
|
continue;
|
|
|
|
demuxer = gst_element_factory_create (factory, NULL);
|
|
break;
|
|
}
|
|
gst_plugin_feature_list_free (eligible);
|
|
|
|
if (!demuxer)
|
|
goto no_demuxer;
|
|
|
|
GST_DEBUG_OBJECT (urisrc, "Created adaptive demuxer %" GST_PTR_FORMAT,
|
|
demuxer);
|
|
|
|
/* set up callbacks to create the links between
|
|
* demuxer streams and output */
|
|
g_signal_connect (demuxer,
|
|
"pad-added", G_CALLBACK (new_demuxer_pad_added_cb), urisrc);
|
|
g_signal_connect (demuxer,
|
|
"pad-removed", G_CALLBACK (pad_removed_cb), urisrc);
|
|
|
|
/* Propagate connection-speed property */
|
|
/* FIXME: Check the property exists on the demuxer */
|
|
g_object_set (demuxer,
|
|
"connection-speed", urisrc->connection_speed / 1000, NULL);
|
|
|
|
return demuxer;
|
|
|
|
/* ERRORS */
|
|
no_demuxer:
|
|
{
|
|
/* FIXME: Fire the right error */
|
|
GST_ELEMENT_ERROR (urisrc, CORE, MISSING_PLUGIN, (NULL),
|
|
("No demuxer element, check your installation"));
|
|
do_async_done (urisrc);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_new_pad (GstURISourceBin * urisrc, GstPad * srcpad, GstCaps * caps)
|
|
{
|
|
gboolean is_raw;
|
|
GstStructure *s;
|
|
const gchar *media_type;
|
|
gboolean do_download = FALSE;
|
|
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
|
|
/* if this is a pad with all raw caps, we can expose it */
|
|
if (is_all_raw_caps (caps, DEFAULT_CAPS, &is_raw) && is_raw) {
|
|
GstPad *pad;
|
|
|
|
GST_DEBUG_OBJECT (urisrc, "Found pad with raw caps %" GST_PTR_FORMAT
|
|
", exposing", caps);
|
|
pad = create_output_pad (urisrc, srcpad);
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
|
|
expose_output_pad (urisrc, pad);
|
|
return;
|
|
}
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
|
|
s = gst_caps_get_structure (caps, 0);
|
|
media_type = gst_structure_get_name (s);
|
|
|
|
urisrc->is_adaptive = IS_ADAPTIVE_MEDIA (media_type);
|
|
|
|
if (urisrc->is_adaptive) {
|
|
GstElement *demux_elem;
|
|
GstPad *sinkpad;
|
|
GstPadLinkReturn link_res;
|
|
|
|
demux_elem = make_demuxer (urisrc, caps);
|
|
if (!demux_elem)
|
|
goto no_demuxer;
|
|
gst_bin_add (GST_BIN_CAST (urisrc), demux_elem);
|
|
|
|
sinkpad = gst_element_get_static_pad (demux_elem, "sink");
|
|
if (sinkpad == NULL)
|
|
goto no_demuxer_sink;
|
|
|
|
link_res = gst_pad_link (srcpad, sinkpad);
|
|
|
|
gst_object_unref (sinkpad);
|
|
if (link_res != GST_PAD_LINK_OK)
|
|
goto could_not_link;
|
|
|
|
gst_element_sync_state_with_parent (demux_elem);
|
|
} else {
|
|
OutputSlotInfo *slot;
|
|
|
|
/* only enable download buffering if the upstream duration is known */
|
|
if (urisrc->download) {
|
|
GstQuery *query = gst_query_new_duration (GST_FORMAT_BYTES);
|
|
if (gst_pad_query (srcpad, query)) {
|
|
gint64 dur;
|
|
gst_query_parse_duration (query, NULL, &dur);
|
|
do_download = (dur != -1);
|
|
}
|
|
gst_object_unref (query);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (urisrc, "check media-type %s, %d", media_type,
|
|
do_download);
|
|
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
slot = get_output_slot (urisrc, do_download, FALSE, NULL);
|
|
|
|
if (slot == NULL || gst_pad_link (srcpad, slot->sinkpad) != GST_PAD_LINK_OK)
|
|
goto could_not_link;
|
|
|
|
expose_output_pad (urisrc, slot->srcpad);
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
}
|
|
|
|
return;
|
|
|
|
/* ERRORS */
|
|
no_demuxer:
|
|
{
|
|
/* error was posted */
|
|
return;
|
|
}
|
|
no_demuxer_sink:
|
|
{
|
|
GST_ELEMENT_ERROR (urisrc, CORE, NEGOTIATION,
|
|
(NULL), ("Adaptive demuxer element has no 'sink' pad"));
|
|
do_async_done (urisrc);
|
|
return;
|
|
}
|
|
could_not_link:
|
|
{
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
GST_ELEMENT_ERROR (urisrc, CORE, NEGOTIATION,
|
|
(NULL), ("Can't link typefind to adaptive demuxer element"));
|
|
do_async_done (urisrc);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* 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, GstURISourceBin * urisrc)
|
|
{
|
|
GstPad *srcpad = gst_element_get_static_pad (typefind, "src");
|
|
|
|
GST_DEBUG_OBJECT (urisrc, "typefind found caps %" GST_PTR_FORMAT
|
|
" on pad %" GST_PTR_FORMAT, caps, srcpad);
|
|
handle_new_pad (urisrc, srcpad, caps);
|
|
|
|
gst_object_unref (GST_OBJECT (srcpad));
|
|
}
|
|
|
|
/* setup a streaming source. This will first plug a typefind element to the
|
|
* source. After we find the type, we decide to whether to plug an adaptive
|
|
* demuxer, or just link through queue2 and expose the data. */
|
|
static gboolean
|
|
setup_streaming (GstURISourceBin * urisrc)
|
|
{
|
|
GstElement *typefind;
|
|
|
|
/* now create the typefind element */
|
|
typefind = gst_element_factory_make ("typefind", NULL);
|
|
if (!typefind)
|
|
goto no_typefind;
|
|
|
|
gst_bin_add (GST_BIN_CAST (urisrc), typefind);
|
|
|
|
if (!gst_element_link_pads (urisrc->source, NULL, typefind, "sink"))
|
|
goto could_not_link;
|
|
|
|
urisrc->typefind = typefind;
|
|
|
|
/* connect a signal to find out when the typefind element found
|
|
* a type */
|
|
urisrc->have_type_id =
|
|
g_signal_connect (urisrc->typefind, "have-type",
|
|
G_CALLBACK (type_found), urisrc);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_typefind:
|
|
{
|
|
post_missing_plugin_error (GST_ELEMENT_CAST (urisrc), "typefind");
|
|
GST_ELEMENT_ERROR (urisrc, CORE, MISSING_PLUGIN, (NULL),
|
|
("No typefind element, check your installation"));
|
|
do_async_done (urisrc);
|
|
return FALSE;
|
|
}
|
|
could_not_link:
|
|
{
|
|
GST_ELEMENT_ERROR (urisrc, CORE, NEGOTIATION,
|
|
(NULL), ("Can't link source to typefind element"));
|
|
gst_bin_remove (GST_BIN_CAST (urisrc), typefind);
|
|
do_async_done (urisrc);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static void
|
|
free_output_slot (OutputSlotInfo * slot, GstURISourceBin * urisrc)
|
|
{
|
|
GST_DEBUG_OBJECT (urisrc, "removing old queue element and freeing slot %p",
|
|
slot);
|
|
gst_element_set_locked_state (slot->queue, TRUE);
|
|
gst_element_set_state (slot->queue, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (urisrc), slot->queue);
|
|
|
|
gst_object_unref (slot->sinkpad);
|
|
|
|
remove_buffering_msgs (urisrc, GST_OBJECT_CAST (slot->queue));
|
|
|
|
/* deactivate and remove the srcpad */
|
|
gst_pad_set_active (slot->srcpad, FALSE);
|
|
gst_element_remove_pad (GST_ELEMENT_CAST (urisrc), slot->srcpad);
|
|
|
|
g_free (slot);
|
|
}
|
|
|
|
/* remove source and all related elements */
|
|
static void
|
|
remove_source (GstURISourceBin * urisrc)
|
|
{
|
|
GstElement *source = urisrc->source;
|
|
|
|
if (source) {
|
|
GST_DEBUG_OBJECT (urisrc, "removing old src element");
|
|
gst_element_set_state (source, GST_STATE_NULL);
|
|
|
|
if (urisrc->src_np_sig_id) {
|
|
g_signal_handler_disconnect (source, urisrc->src_np_sig_id);
|
|
urisrc->src_np_sig_id = 0;
|
|
}
|
|
gst_bin_remove (GST_BIN_CAST (urisrc), source);
|
|
urisrc->source = NULL;
|
|
}
|
|
if (urisrc->typefind) {
|
|
GST_DEBUG_OBJECT (urisrc, "removing old typefind element");
|
|
gst_element_set_state (urisrc->typefind, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (urisrc), urisrc->typefind);
|
|
urisrc->typefind = NULL;
|
|
}
|
|
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
g_slist_foreach (urisrc->out_slots, (GFunc) free_output_slot, urisrc);
|
|
g_slist_free (urisrc->out_slots);
|
|
urisrc->out_slots = NULL;
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
|
|
if (urisrc->demuxer) {
|
|
GST_DEBUG_OBJECT (urisrc, "removing old adaptive demux element");
|
|
gst_element_set_state (urisrc->demuxer, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN_CAST (urisrc), urisrc->demuxer);
|
|
urisrc->demuxer = NULL;
|
|
}
|
|
}
|
|
|
|
/* is called when a dynamic source element created a new pad. */
|
|
static void
|
|
source_new_pad (GstElement * element, GstPad * pad, GstURISourceBin * urisrc)
|
|
{
|
|
GstCaps *caps;
|
|
|
|
GST_DEBUG_OBJECT (urisrc, "Found new pad %s.%s in source element %s",
|
|
GST_DEBUG_PAD_NAME (pad), GST_ELEMENT_NAME (element));
|
|
caps = gst_pad_get_current_caps (pad);
|
|
if (caps == NULL)
|
|
caps = gst_pad_query_caps (pad, NULL);
|
|
handle_new_pad (urisrc, pad, caps);
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
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 demuxer elements until we found
|
|
* all the streams or until a preroll queue has been filled.
|
|
*/
|
|
static gboolean
|
|
setup_source (GstURISourceBin * urisrc)
|
|
{
|
|
gboolean is_raw, have_out, is_dynamic;
|
|
|
|
GST_DEBUG_OBJECT (urisrc, "setup source");
|
|
|
|
/* delete old src */
|
|
remove_source (urisrc);
|
|
|
|
/* create and configure an element that can handle the uri */
|
|
if (!(urisrc->source = gen_source_element (urisrc)))
|
|
goto no_source;
|
|
|
|
/* state will be merged later - if file is not found, error will be
|
|
* handled by the application right after. */
|
|
gst_bin_add (GST_BIN_CAST (urisrc), urisrc->source);
|
|
|
|
/* notify of the new source used */
|
|
g_object_notify (G_OBJECT (urisrc), "source");
|
|
|
|
g_signal_emit (urisrc, gst_uri_source_bin_signals[SIGNAL_SOURCE_SETUP],
|
|
0, urisrc->source);
|
|
|
|
if (is_live_source (urisrc->source))
|
|
urisrc->is_stream = FALSE;
|
|
|
|
/* remove the old demuxer now, if any */
|
|
remove_demuxer (urisrc);
|
|
|
|
/* 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 (urisrc, &is_raw, &have_out, &is_dynamic,
|
|
urisrc->need_queue && urisrc->use_buffering))
|
|
goto invalid_source;
|
|
|
|
if (is_raw) {
|
|
GST_DEBUG_OBJECT (urisrc, "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 (urisrc));
|
|
do_async_done (urisrc);
|
|
return TRUE;
|
|
}
|
|
if (!have_out && !is_dynamic) {
|
|
GST_DEBUG_OBJECT (urisrc, "Source has no output pads");
|
|
return TRUE;
|
|
}
|
|
if (is_dynamic) {
|
|
GST_DEBUG_OBJECT (urisrc, "Source has dynamic output pads");
|
|
/* connect a handler for the new-pad signal */
|
|
urisrc->src_np_sig_id =
|
|
g_signal_connect (urisrc->source, "pad-added",
|
|
G_CALLBACK (source_new_pad), urisrc);
|
|
} else {
|
|
if (urisrc->is_stream) {
|
|
GST_DEBUG_OBJECT (urisrc, "Setting up streaming");
|
|
/* do the stream things here */
|
|
if (!setup_streaming (urisrc))
|
|
goto streaming_failed;
|
|
} else {
|
|
GstIterator *pads_iter;
|
|
gboolean done = FALSE;
|
|
pads_iter = gst_element_iterate_src_pads (urisrc->source);
|
|
while (!done) {
|
|
GValue item = { 0, };
|
|
GstPad *pad;
|
|
|
|
switch (gst_iterator_next (pads_iter, &item)) {
|
|
case GST_ITERATOR_ERROR:
|
|
GST_WARNING_OBJECT (urisrc,
|
|
"Error iterating pads on source element");
|
|
/* FALLTROUGH */
|
|
case GST_ITERATOR_DONE:
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_RESYNC:
|
|
/* reset results and resync */
|
|
gst_iterator_resync (pads_iter);
|
|
break;
|
|
case GST_ITERATOR_OK:
|
|
pad = g_value_get_object (&item);
|
|
/* no streaming source, expose pads directly */
|
|
GST_URI_SOURCE_BIN_LOCK (urisrc);
|
|
pad = create_output_pad (urisrc, pad);
|
|
GST_URI_SOURCE_BIN_UNLOCK (urisrc);
|
|
expose_output_pad (urisrc, pad);
|
|
g_value_reset (&item);
|
|
break;
|
|
}
|
|
}
|
|
gst_iterator_free (pads_iter);
|
|
gst_element_no_more_pads (GST_ELEMENT_CAST (urisrc));
|
|
do_async_done (urisrc);
|
|
}
|
|
}
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_source:
|
|
{
|
|
/* error message was already posted */
|
|
return FALSE;
|
|
}
|
|
invalid_source:
|
|
{
|
|
GST_ELEMENT_ERROR (urisrc, CORE, FAILED,
|
|
(_("Source element is invalid.")), (NULL));
|
|
return FALSE;
|
|
}
|
|
streaming_failed:
|
|
{
|
|
/* message was posted */
|
|
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 (GstURISourceBin * 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 *
|
|
handle_buffering_message (GstURISourceBin * urisrc, GstMessage * msg)
|
|
{
|
|
gint perc, msg_perc;
|
|
gint smaller_perc = 100;
|
|
GstMessage *smaller = NULL;
|
|
GList *found = NULL;
|
|
GList *iter;
|
|
|
|
/* buffering messages must be aggregated as there might be multiple
|
|
* multiqueue in the pipeline and their independent buffering messages
|
|
* will confuse the application
|
|
*
|
|
* urisourcebin keeps a list of messages received from elements that are
|
|
* buffering.
|
|
* Rules are:
|
|
* 0) Ignore buffering from elements that are draining (is_eos == TRUE)
|
|
* 1) Always post the smaller buffering %
|
|
* 2) If an element posts a 100% buffering message, remove it from the list
|
|
* 3) When there are no more messages on the list, post 100% message
|
|
* 4) When an element posts a new buffering message, update the one
|
|
* on the list to this new value
|
|
*/
|
|
gst_message_parse_buffering (msg, &msg_perc);
|
|
GST_LOG_OBJECT (urisrc, "Got buffering msg from %" GST_PTR_FORMAT
|
|
" with %d%%", GST_MESSAGE_SRC (msg), msg_perc);
|
|
|
|
GST_OBJECT_LOCK (urisrc);
|
|
/*
|
|
* Single loop for 2 things:
|
|
* 1) Look for a message with the same source
|
|
* 1.1) If the received message is 100%, remove it from the list
|
|
* 2) Find the minimum buffering from the list from elements that aren't EOS
|
|
*/
|
|
for (iter = urisrc->buffering_status; iter;) {
|
|
GstMessage *bufstats = iter->data;
|
|
OutputSlotInfo *slot =
|
|
g_object_get_data (G_OBJECT (GST_MESSAGE_SRC (bufstats)),
|
|
"urisourcebin.slotinfo");
|
|
gboolean is_eos = FALSE;
|
|
|
|
if (slot)
|
|
is_eos = slot->is_eos;
|
|
|
|
if (GST_MESSAGE_SRC (bufstats) == GST_MESSAGE_SRC (msg)) {
|
|
found = iter;
|
|
if (msg_perc < 100) {
|
|
gst_message_unref (iter->data);
|
|
bufstats = iter->data = gst_message_ref (msg);
|
|
} else {
|
|
GList *current = iter;
|
|
|
|
/* remove the element here and avoid confusing the loop */
|
|
iter = g_list_next (iter);
|
|
|
|
gst_message_unref (current->data);
|
|
urisrc->buffering_status =
|
|
g_list_delete_link (urisrc->buffering_status, current);
|
|
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* only update minimum stat for non-EOS slots */
|
|
if (!is_eos) {
|
|
gst_message_parse_buffering (bufstats, &perc);
|
|
if (perc < smaller_perc) {
|
|
smaller_perc = perc;
|
|
smaller = bufstats;
|
|
}
|
|
} else {
|
|
GST_LOG_OBJECT (urisrc, "Ignoring buffering from EOS element");
|
|
}
|
|
iter = g_list_next (iter);
|
|
}
|
|
|
|
if (found == NULL && msg_perc < 100) {
|
|
if (msg_perc < smaller_perc) {
|
|
smaller_perc = msg_perc;
|
|
smaller = msg;
|
|
}
|
|
urisrc->buffering_status =
|
|
g_list_prepend (urisrc->buffering_status, gst_message_ref (msg));
|
|
}
|
|
|
|
if (smaller_perc == urisrc->last_buffering_pct) {
|
|
/* Don't repeat our last buffering status */
|
|
gst_message_replace (&msg, NULL);
|
|
} else {
|
|
urisrc->last_buffering_pct = smaller_perc;
|
|
|
|
/* now compute the buffering message that should be posted */
|
|
if (smaller_perc == 100) {
|
|
g_assert (urisrc->buffering_status == NULL);
|
|
/* we are posting the original received msg */
|
|
} else {
|
|
gst_message_replace (&msg, smaller);
|
|
}
|
|
}
|
|
GST_OBJECT_UNLOCK (urisrc);
|
|
|
|
if (msg) {
|
|
GST_LOG_OBJECT (urisrc, "Sending buffering msg from %" GST_PTR_FORMAT
|
|
" with %d%%", GST_MESSAGE_SRC (msg), smaller_perc);
|
|
} else {
|
|
GST_LOG_OBJECT (urisrc, "Dropped buffering msg as a repeat of %d%%",
|
|
smaller_perc);
|
|
}
|
|
return msg;
|
|
}
|
|
|
|
/* Remove any buffering message from the given source */
|
|
static void
|
|
remove_buffering_msgs (GstURISourceBin * urisrc, GstObject * src)
|
|
{
|
|
GList *iter;
|
|
|
|
GST_OBJECT_LOCK (urisrc);
|
|
for (iter = urisrc->buffering_status; iter;) {
|
|
GstMessage *bufstats = iter->data;
|
|
if (GST_MESSAGE_SRC (bufstats) == src) {
|
|
gst_message_unref (bufstats);
|
|
urisrc->buffering_status =
|
|
g_list_delete_link (urisrc->buffering_status, iter);
|
|
break;
|
|
}
|
|
iter = g_list_next (iter);
|
|
}
|
|
GST_OBJECT_UNLOCK (urisrc);
|
|
}
|
|
|
|
static void
|
|
handle_message (GstBin * bin, GstMessage * msg)
|
|
{
|
|
GstURISourceBin *urisrc = GST_URI_SOURCE_BIN (bin);
|
|
|
|
switch (GST_MESSAGE_TYPE (msg)) {
|
|
case GST_MESSAGE_ELEMENT:{
|
|
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 (urisrc, msg);
|
|
}
|
|
break;
|
|
}
|
|
case GST_MESSAGE_BUFFERING:
|
|
msg = handle_buffering_message (urisrc, msg);
|
|
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) (GstURISourceBin * urisrc, QueryFold * fold);
|
|
typedef void (*QueryDoneFunction) (GstURISourceBin * urisrc, QueryFold * fold);
|
|
|
|
/* for duration/position we collect all durations/positions and take
|
|
* the MAX of all valid results */
|
|
static void
|
|
decoder_query_init (GstURISourceBin * 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 (item, "got duration %" G_GINT64_FORMAT, duration);
|
|
|
|
if (duration > fold->max)
|
|
fold->max = duration;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
decoder_query_duration_done (GstURISourceBin * 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 (item, "got position %" G_GINT64_FORMAT, position);
|
|
|
|
if (position > fold->max)
|
|
fold->max = position;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
decoder_query_position_done (GstURISourceBin * 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 (GstURISourceBin * 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 (item, "got seekable %d", seekable);
|
|
|
|
if (fold->seekable)
|
|
fold->seekable = seekable;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
decoder_query_seeking_done (GstURISourceBin * 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 (item, "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_source_bin_query (GstElement * element, GstQuery * query)
|
|
{
|
|
GstURISourceBin *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_SOURCE_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 void
|
|
sync_slot_queue (OutputSlotInfo * slot)
|
|
{
|
|
gst_element_sync_state_with_parent (slot->queue);
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_uri_source_bin_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstStateChangeReturn ret;
|
|
GstURISourceBin *urisrc = GST_URI_SOURCE_BIN (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
do_async_start (urisrc);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
goto setup_failed;
|
|
else if (ret == GST_STATE_CHANGE_NO_PREROLL)
|
|
do_async_done (urisrc);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
GST_DEBUG ("ready to paused");
|
|
if (!setup_source (urisrc))
|
|
goto source_failed;
|
|
|
|
ret = GST_STATE_CHANGE_ASYNC;
|
|
|
|
/* And now sync the states of everything we added */
|
|
g_slist_foreach (urisrc->out_slots, (GFunc) sync_slot_queue, NULL);
|
|
if (urisrc->typefind)
|
|
ret = gst_element_set_state (urisrc->typefind, GST_STATE_PAUSED);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
goto setup_failed;
|
|
if (urisrc->source)
|
|
ret = gst_element_set_state (urisrc->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_demuxer (urisrc);
|
|
remove_source (urisrc);
|
|
do_async_done (urisrc);
|
|
g_list_free_full (urisrc->buffering_status,
|
|
(GDestroyNotify) gst_message_unref);
|
|
urisrc->buffering_status = NULL;
|
|
urisrc->last_buffering_pct = -1;
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
GST_DEBUG ("ready to null");
|
|
remove_demuxer (urisrc);
|
|
remove_source (urisrc);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
source_failed:
|
|
{
|
|
do_async_done (urisrc);
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
setup_failed:
|
|
{
|
|
/* clean up leftover groups */
|
|
do_async_done (urisrc);
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
}
|
|
}
|
|
|
|
gboolean
|
|
gst_uri_source_bin_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (gst_uri_source_bin_debug, "urisourcebin", 0,
|
|
"URI source element");
|
|
|
|
return gst_element_register (plugin, "urisourcebin", GST_RANK_NONE,
|
|
GST_TYPE_URI_DECODE_BIN);
|
|
}
|