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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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3940 lines
126 KiB
C
3940 lines
126 KiB
C
/* GStreamer
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*
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* Copyright (C) 2014 Samsung Electronics. All rights reserved.
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* Author: Thiago Santos <thiagoss@osg.samsung.com>
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*
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* Copyright (C) 2021-2022 Centricular Ltd
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* Author: Edward Hervey <edward@centricular.com>
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* Author: Jan Schmidt <jan@centricular.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:plugin-adaptivedemux2
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* @short_description: Next Generation adaptive demuxers
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*
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* What is an adaptive demuxer? Adaptive demuxers are special demuxers in the
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* sense that they don't actually demux data received from upstream but download
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* the data themselves.
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*
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* Adaptive formats (HLS, DASH, MSS) are composed of a manifest file and a set
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* of fragments. The manifest describes the available media and the sequence of
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* fragments to use. Each fragment contains a small part of the media (typically
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* only a few seconds). It is possible for the manifest to have the same media
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* available in different configurations (bitrates for example) so that the
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* client can select the one that best suits its scenario (network fluctuation,
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* hardware requirements...).
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*
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* Furthermore, that manifest can also specify alternative medias (such as audio
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* or subtitle tracks in different languages). Only the fragments for the
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* requested selection will be download.
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*
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* These elements can therefore "adapt" themselves to the network conditions (as
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* opposed to the server doing that adaptation) and user choices, which is why
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* they are called "adaptive" demuxers.
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*
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* Note: These elements require a "streams-aware" container to work
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* (i.e. urisourcebin, decodebin3, playbin3, or any bin/pipeline with the
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* GST_BIN_FLAG_STREAMS_AWARE flag set).
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*
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* Subclasses:
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* While GstAdaptiveDemux is responsible for the workflow, it knows nothing
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* about the intrinsics of the subclass formats, so the subclasses are
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* responsible for maintaining the manifest data structures and stream
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* information.
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*
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* Since: 1.22
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*/
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/*
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See the adaptive-demuxer.md design documentation for more information
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MT safety.
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The following rules were observed while implementing MT safety in adaptive demux:
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1. If a variable is accessed from multiple threads and at least one thread
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writes to it, then all the accesses needs to be done from inside a critical section.
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2. If thread A wants to join thread B then at the moment it calls gst_task_join
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it must not hold any mutexes that thread B might take.
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Adaptive demux API can be called from several threads. More, adaptive demux
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starts some threads to monitor the download of fragments. In order to protect
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accesses to shared variables (demux and streams) all the API functions that
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can be run in different threads will need to get a mutex (manifest_lock)
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when they start and release it when they end. Because some of those functions
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can indirectly call other API functions (eg they can generate events or messages
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that are processed in the same thread) the manifest_lock must be recursive.
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The manifest_lock will serialize the public API making access to shared
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variables safe. But some of these functions will try at some moment to join
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threads created by adaptive demux, or to change the state of src elements
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(which will block trying to join the src element streaming thread). Because
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of rule 2, those functions will need to release the manifest_lock during the
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call of gst_task_join. During this time they can be interrupted by other API calls.
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For example, during the precessing of a seek event, gst_adaptive_demux_stop_tasks
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is called and this will join all threads. In order to prevent interruptions
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during such period, all the API functions will also use a second lock: api_lock.
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This will be taken at the beginning of the function and released at the end,
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but this time this lock will not be temporarily released during join.
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This lock will be used only by API calls (not by the SCHEDULER task)
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so it is safe to hold it while joining the threads or changing the src element state. The
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api_lock will serialise all external requests to adaptive demux. In order to
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avoid deadlocks, if a function needs to acquire both manifest and api locks,
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the api_lock will be taken first and the manifest_lock second.
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By using the api_lock a thread is protected against other API calls.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstadaptivedemux.h"
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#include "gstadaptivedemux-private.h"
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#include <glib/gi18n-lib.h>
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#include <gst/base/gstadapter.h>
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#include <gst/app/gstappsrc.h>
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GST_DEBUG_CATEGORY_EXTERN (adaptivedemux2_debug);
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#define GST_CAT_DEFAULT adaptivedemux2_debug
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#define DEFAULT_FAILED_COUNT 3
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#define DEFAULT_CONNECTION_BITRATE 0
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#define DEFAULT_BANDWIDTH_TARGET_RATIO 0.8f
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#define DEFAULT_MIN_BITRATE 0
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#define DEFAULT_MAX_BITRATE 0
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#define DEFAULT_MAX_BUFFERING_TIME (30 * GST_SECOND)
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#define DEFAULT_BUFFERING_HIGH_WATERMARK_TIME (30 * GST_SECOND)
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#define DEFAULT_BUFFERING_LOW_WATERMARK_TIME 0 /* Automatic */
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#define DEFAULT_BUFFERING_HIGH_WATERMARK_FRAGMENTS 0.0
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#define DEFAULT_BUFFERING_LOW_WATERMARK_FRAGMENTS 0.0
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#define DEFAULT_CURRENT_LEVEL_TIME_VIDEO 0
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#define DEFAULT_CURRENT_LEVEL_TIME_AUDIO 0
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#define GST_API_GET_LOCK(d) (&(GST_ADAPTIVE_DEMUX_CAST(d)->priv->api_lock))
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#define GST_API_LOCK(d) g_mutex_lock (GST_API_GET_LOCK (d));
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#define GST_API_UNLOCK(d) g_mutex_unlock (GST_API_GET_LOCK (d));
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enum
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{
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PROP_0,
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PROP_CONNECTION_SPEED,
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PROP_BANDWIDTH_TARGET_RATIO,
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PROP_CONNECTION_BITRATE,
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PROP_MIN_BITRATE,
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PROP_MAX_BITRATE,
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PROP_CURRENT_BANDWIDTH,
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PROP_MAX_BUFFERING_TIME,
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PROP_BUFFERING_HIGH_WATERMARK_TIME,
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PROP_BUFFERING_LOW_WATERMARK_TIME,
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PROP_BUFFERING_HIGH_WATERMARK_FRAGMENTS,
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PROP_BUFFERING_LOW_WATERMARK_FRAGMENTS,
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PROP_CURRENT_LEVEL_TIME_VIDEO,
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PROP_CURRENT_LEVEL_TIME_AUDIO,
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PROP_LAST
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};
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static GstStaticPadTemplate gst_adaptive_demux_videosrc_template =
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GST_STATIC_PAD_TEMPLATE ("video_%02u",
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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 GstStaticPadTemplate gst_adaptive_demux_audiosrc_template =
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GST_STATIC_PAD_TEMPLATE ("audio_%02u",
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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 GstStaticPadTemplate gst_adaptive_demux_subtitlesrc_template =
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GST_STATIC_PAD_TEMPLATE ("subtitle_%02u",
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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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/* Private structure for a track being outputted */
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typedef struct _OutputSlot
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{
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/* Output pad */
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GstPad *pad;
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/* Last flow return */
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GstFlowReturn flow_ret;
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/* Stream Type */
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GstStreamType type;
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/* Target track (reference) */
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GstAdaptiveDemuxTrack *track;
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/* Pending track (which will replace track) */
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GstAdaptiveDemuxTrack *pending_track;
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/* TRUE if a buffer or a gap event was pushed through this slot. */
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gboolean pushed_timed_data;
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} OutputSlot;
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static GstBinClass *parent_class = NULL;
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static gint private_offset = 0;
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static void gst_adaptive_demux_class_init (GstAdaptiveDemuxClass * klass);
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static void gst_adaptive_demux_init (GstAdaptiveDemux * dec,
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GstAdaptiveDemuxClass * klass);
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static void gst_adaptive_demux_finalize (GObject * object);
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static GstStateChangeReturn gst_adaptive_demux_change_state (GstElement *
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element, GstStateChange transition);
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static gboolean gst_adaptive_demux_query (GstElement * element,
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GstQuery * query);
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static gboolean gst_adaptive_demux_send_event (GstElement * element,
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GstEvent * event);
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static void gst_adaptive_demux_handle_message (GstBin * bin, GstMessage * msg);
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static gboolean gst_adaptive_demux_sink_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static GstFlowReturn gst_adaptive_demux_sink_chain (GstPad * pad,
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GstObject * parent, GstBuffer * buffer);
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static gboolean gst_adaptive_demux_src_query (GstPad * pad, GstObject * parent,
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GstQuery * query);
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static gboolean gst_adaptive_demux_src_event (GstPad * pad, GstObject * parent,
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GstEvent * event);
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static gboolean gst_adaptive_demux_handle_seek_event (GstAdaptiveDemux * demux,
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GstEvent * event);
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static gboolean gst_adaptive_demux_handle_select_streams_event (GstAdaptiveDemux
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* demux, GstEvent * event);
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static gboolean
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gst_adaptive_demux_push_src_event (GstAdaptiveDemux * demux, GstEvent * event);
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static void gst_adaptive_demux_output_loop (GstAdaptiveDemux * demux);
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static void gst_adaptive_demux_reset (GstAdaptiveDemux * demux);
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static gboolean gst_adaptive_demux_prepare_streams (GstAdaptiveDemux * demux,
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gboolean first_and_live);
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static GstFlowReturn
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gst_adaptive_demux_update_manifest_default (GstAdaptiveDemux * demux);
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static void gst_adaptive_demux_stop_manifest_update_task (GstAdaptiveDemux *
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demux);
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static void gst_adaptive_demux_start_manifest_update_task (GstAdaptiveDemux *
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demux);
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static void gst_adaptive_demux_start_tasks (GstAdaptiveDemux * demux);
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static void gst_adaptive_demux_stop_tasks (GstAdaptiveDemux * demux,
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gboolean stop_updates);
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static gboolean
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gst_adaptive_demux_requires_periodical_playlist_update_default (GstAdaptiveDemux
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* demux);
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/* we can't use G_DEFINE_ABSTRACT_TYPE because we need the klass in the _init
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* method to get to the padtemplates */
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GType
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gst_adaptive_demux_ng_get_type (void)
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{
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static gsize type = 0;
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if (g_once_init_enter (&type)) {
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GType _type;
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static const GTypeInfo info = {
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sizeof (GstAdaptiveDemuxClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_adaptive_demux_class_init,
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NULL,
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NULL,
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sizeof (GstAdaptiveDemux),
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0,
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(GInstanceInitFunc) gst_adaptive_demux_init,
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};
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_type = g_type_register_static (GST_TYPE_BIN,
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"GstAdaptiveDemux2", &info, G_TYPE_FLAG_ABSTRACT);
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private_offset =
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g_type_add_instance_private (_type, sizeof (GstAdaptiveDemuxPrivate));
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g_once_init_leave (&type, _type);
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}
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return type;
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}
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static inline GstAdaptiveDemuxPrivate *
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gst_adaptive_demux_get_instance_private (GstAdaptiveDemux * self)
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{
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return (G_STRUCT_MEMBER_P (self, private_offset));
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}
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static void
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gst_adaptive_demux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX (object);
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GST_OBJECT_LOCK (demux);
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switch (prop_id) {
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case PROP_CONNECTION_SPEED:
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demux->connection_speed = g_value_get_uint (value) * 1000;
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GST_DEBUG_OBJECT (demux, "Connection speed set to %u",
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demux->connection_speed);
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break;
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case PROP_BANDWIDTH_TARGET_RATIO:
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demux->bandwidth_target_ratio = g_value_get_float (value);
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break;
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case PROP_MIN_BITRATE:
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demux->min_bitrate = g_value_get_uint (value);
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break;
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case PROP_MAX_BITRATE:
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demux->max_bitrate = g_value_get_uint (value);
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break;
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case PROP_CONNECTION_BITRATE:
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demux->connection_speed = g_value_get_uint (value);
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break;
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/* FIXME: Recalculate track and buffering levels
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* when watermarks change? */
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case PROP_MAX_BUFFERING_TIME:
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demux->max_buffering_time = g_value_get_uint64 (value);
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break;
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case PROP_BUFFERING_HIGH_WATERMARK_TIME:
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demux->buffering_high_watermark_time = g_value_get_uint64 (value);
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break;
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case PROP_BUFFERING_LOW_WATERMARK_TIME:
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demux->buffering_low_watermark_time = g_value_get_uint64 (value);
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break;
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case PROP_BUFFERING_HIGH_WATERMARK_FRAGMENTS:
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demux->buffering_high_watermark_fragments = g_value_get_double (value);
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break;
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case PROP_BUFFERING_LOW_WATERMARK_FRAGMENTS:
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demux->buffering_low_watermark_fragments = g_value_get_double (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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GST_OBJECT_UNLOCK (demux);
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}
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static void
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gst_adaptive_demux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX (object);
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GST_OBJECT_LOCK (demux);
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switch (prop_id) {
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case PROP_CONNECTION_SPEED:
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g_value_set_uint (value, demux->connection_speed / 1000);
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break;
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case PROP_BANDWIDTH_TARGET_RATIO:
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g_value_set_float (value, demux->bandwidth_target_ratio);
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break;
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case PROP_MIN_BITRATE:
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g_value_set_uint (value, demux->min_bitrate);
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break;
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case PROP_MAX_BITRATE:
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g_value_set_uint (value, demux->max_bitrate);
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break;
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case PROP_CONNECTION_BITRATE:
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g_value_set_uint (value, demux->connection_speed);
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break;
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case PROP_CURRENT_BANDWIDTH:
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g_value_set_uint (value, demux->current_download_rate);
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break;
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case PROP_MAX_BUFFERING_TIME:
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g_value_set_uint64 (value, demux->max_buffering_time);
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break;
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case PROP_BUFFERING_HIGH_WATERMARK_TIME:
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g_value_set_uint64 (value, demux->buffering_high_watermark_time);
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break;
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case PROP_BUFFERING_LOW_WATERMARK_TIME:
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g_value_set_uint64 (value, demux->buffering_low_watermark_time);
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break;
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case PROP_BUFFERING_HIGH_WATERMARK_FRAGMENTS:
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g_value_set_double (value, demux->buffering_high_watermark_fragments);
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break;
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case PROP_BUFFERING_LOW_WATERMARK_FRAGMENTS:
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g_value_set_double (value, demux->buffering_low_watermark_fragments);
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break;
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case PROP_CURRENT_LEVEL_TIME_VIDEO:
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g_value_set_uint64 (value, demux->current_level_time_video);
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break;
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case PROP_CURRENT_LEVEL_TIME_AUDIO:
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g_value_set_uint64 (value, demux->current_level_time_audio);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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GST_OBJECT_UNLOCK (demux);
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}
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static void
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gst_adaptive_demux_class_init (GstAdaptiveDemuxClass * 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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GST_DEBUG_CATEGORY_INIT (adaptivedemux2_debug, "adaptivedemux2", 0,
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"Base Adaptive Demux (ng)");
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parent_class = g_type_class_peek_parent (klass);
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if (private_offset != 0)
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g_type_class_adjust_private_offset (klass, &private_offset);
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gobject_class->set_property = gst_adaptive_demux_set_property;
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gobject_class->get_property = gst_adaptive_demux_get_property;
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gobject_class->finalize = gst_adaptive_demux_finalize;
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g_object_class_install_property (gobject_class, PROP_CONNECTION_SPEED,
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g_param_spec_uint ("connection-speed", "Connection Speed",
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"Network connection speed to use in kbps (0 = calculate from downloaded"
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" fragments)", 0, G_MAXUINT / 1000, DEFAULT_CONNECTION_BITRATE / 1000,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_BANDWIDTH_TARGET_RATIO,
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g_param_spec_float ("bandwidth-target-ratio",
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"Ratio of target bandwidth / available bandwidth",
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"Limit of the available bitrate to use when switching to alternates",
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0, 1, DEFAULT_BANDWIDTH_TARGET_RATIO,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_CONNECTION_BITRATE,
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g_param_spec_uint ("connection-bitrate", "Connection Speed (bits/s)",
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"Network connection speed to use (0 = automatic) (bits/s)",
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0, G_MAXUINT, DEFAULT_CONNECTION_BITRATE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MIN_BITRATE,
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g_param_spec_uint ("min-bitrate", "Minimum Bitrate",
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"Minimum bitrate to use when switching to alternates (bits/s)",
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0, G_MAXUINT, DEFAULT_MIN_BITRATE,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class, PROP_MAX_BITRATE,
|
|
g_param_spec_uint ("max-bitrate", "Maximum Bitrate",
|
|
"Maximum bitrate to use when switching to alternates (bits/s)",
|
|
0, G_MAXUINT, DEFAULT_MAX_BITRATE,
|
|
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_CURRENT_BANDWIDTH,
|
|
g_param_spec_uint ("current-bandwidth",
|
|
"Current download bandwidth (bits/s)",
|
|
"Report of current download bandwidth (based on arriving data) (bits/s)",
|
|
0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_MAX_BUFFERING_TIME,
|
|
g_param_spec_uint64 ("max-buffering-time",
|
|
"Buffering maximum size (ns)",
|
|
"Upper limit on the high watermark for parsed data, above which downloads are paused (in ns, 0=disable)",
|
|
0, G_MAXUINT64, DEFAULT_MAX_BUFFERING_TIME,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_BUFFERING_HIGH_WATERMARK_TIME,
|
|
g_param_spec_uint64 ("high-watermark-time",
|
|
"High buffering watermark size (ns)",
|
|
"High watermark for parsed data above which downloads are paused (in ns, 0=disable)",
|
|
0, G_MAXUINT64, DEFAULT_BUFFERING_HIGH_WATERMARK_TIME,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_BUFFERING_LOW_WATERMARK_TIME,
|
|
g_param_spec_uint64 ("low-watermark-time",
|
|
"Low buffering watermark size (ns)",
|
|
"Low watermark for parsed data below which downloads are resumed (in ns, 0=automatic)",
|
|
0, G_MAXUINT64, DEFAULT_BUFFERING_LOW_WATERMARK_TIME,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_BUFFERING_HIGH_WATERMARK_FRAGMENTS,
|
|
g_param_spec_double ("high-watermark-fragments",
|
|
"High buffering watermark size (fragments)",
|
|
"High watermark for parsed data above which downloads are paused (in fragments, 0=disable)",
|
|
0, G_MAXFLOAT, DEFAULT_BUFFERING_HIGH_WATERMARK_FRAGMENTS,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class,
|
|
PROP_BUFFERING_LOW_WATERMARK_FRAGMENTS,
|
|
g_param_spec_double ("low-watermark-fragments",
|
|
"Low buffering watermark size (fragments)",
|
|
"Low watermark for parsed data below which downloads are resumed (in fragments, 0=disable)",
|
|
0, G_MAXFLOAT, DEFAULT_BUFFERING_LOW_WATERMARK_FRAGMENTS,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_CURRENT_LEVEL_TIME_VIDEO,
|
|
g_param_spec_uint64 ("current-level-time-video",
|
|
"Currently buffered level of video (ns)",
|
|
"Currently buffered level of video track(s) (ns)",
|
|
0, G_MAXUINT64, DEFAULT_CURRENT_LEVEL_TIME_VIDEO,
|
|
G_PARAM_READABLE | GST_PARAM_MUTABLE_PLAYING |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
g_object_class_install_property (gobject_class, PROP_CURRENT_LEVEL_TIME_AUDIO,
|
|
g_param_spec_uint64 ("current-level-time-audio",
|
|
"Currently buffered level of audio (ns)",
|
|
"Currently buffered level of audio track(s) (ns)",
|
|
0, G_MAXUINT64, DEFAULT_CURRENT_LEVEL_TIME_AUDIO,
|
|
G_PARAM_READABLE | GST_PARAM_MUTABLE_PLAYING |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_adaptive_demux_audiosrc_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_adaptive_demux_videosrc_template);
|
|
gst_element_class_add_static_pad_template (gstelement_class,
|
|
&gst_adaptive_demux_subtitlesrc_template);
|
|
|
|
gstelement_class->change_state = gst_adaptive_demux_change_state;
|
|
gstelement_class->query = gst_adaptive_demux_query;
|
|
gstelement_class->send_event = gst_adaptive_demux_send_event;
|
|
|
|
gstbin_class->handle_message = gst_adaptive_demux_handle_message;
|
|
|
|
klass->update_manifest = gst_adaptive_demux_update_manifest_default;
|
|
klass->requires_periodical_playlist_update =
|
|
gst_adaptive_demux_requires_periodical_playlist_update_default;
|
|
gst_type_mark_as_plugin_api (GST_TYPE_ADAPTIVE_DEMUX, 0);
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_init (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemuxClass * klass)
|
|
{
|
|
GstPadTemplate *pad_template;
|
|
|
|
GST_DEBUG_OBJECT (demux, "gst_adaptive_demux_init");
|
|
|
|
demux->priv = gst_adaptive_demux_get_instance_private (demux);
|
|
demux->priv->input_adapter = gst_adapter_new ();
|
|
demux->realtime_clock = gst_adaptive_demux_clock_new ();
|
|
|
|
demux->download_helper = downloadhelper_new (demux->realtime_clock);
|
|
demux->priv->segment_seqnum = gst_util_seqnum_next ();
|
|
demux->have_group_id = FALSE;
|
|
demux->group_id = G_MAXUINT;
|
|
|
|
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
|
|
demux->instant_rate_multiplier = 1.0;
|
|
|
|
GST_OBJECT_FLAG_SET (demux, GST_BIN_FLAG_STREAMS_AWARE);
|
|
gst_bin_set_suppressed_flags (GST_BIN_CAST (demux),
|
|
GST_ELEMENT_FLAG_SOURCE | GST_ELEMENT_FLAG_SINK);
|
|
|
|
g_rec_mutex_init (&demux->priv->manifest_lock);
|
|
|
|
demux->priv->scheduler_task = gst_adaptive_demux_loop_new ();
|
|
|
|
g_mutex_init (&demux->priv->api_lock);
|
|
g_mutex_init (&demux->priv->segment_lock);
|
|
|
|
g_mutex_init (&demux->priv->tracks_lock);
|
|
g_cond_init (&demux->priv->tracks_add);
|
|
|
|
g_mutex_init (&demux->priv->buffering_lock);
|
|
|
|
demux->priv->periods = g_queue_new ();
|
|
|
|
pad_template =
|
|
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (klass), "sink");
|
|
g_return_if_fail (pad_template != NULL);
|
|
|
|
demux->sinkpad = gst_pad_new_from_template (pad_template, "sink");
|
|
gst_pad_set_event_function (demux->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_adaptive_demux_sink_event));
|
|
gst_pad_set_chain_function (demux->sinkpad,
|
|
GST_DEBUG_FUNCPTR (gst_adaptive_demux_sink_chain));
|
|
|
|
/* Properties */
|
|
demux->bandwidth_target_ratio = DEFAULT_BANDWIDTH_TARGET_RATIO;
|
|
demux->connection_speed = DEFAULT_CONNECTION_BITRATE;
|
|
demux->min_bitrate = DEFAULT_MIN_BITRATE;
|
|
demux->max_bitrate = DEFAULT_MAX_BITRATE;
|
|
|
|
demux->max_buffering_time = DEFAULT_MAX_BUFFERING_TIME;
|
|
demux->buffering_high_watermark_time = DEFAULT_BUFFERING_HIGH_WATERMARK_TIME;
|
|
demux->buffering_low_watermark_time = DEFAULT_BUFFERING_LOW_WATERMARK_TIME;
|
|
demux->buffering_high_watermark_fragments =
|
|
DEFAULT_BUFFERING_HIGH_WATERMARK_FRAGMENTS;
|
|
demux->buffering_low_watermark_fragments =
|
|
DEFAULT_BUFFERING_LOW_WATERMARK_FRAGMENTS;
|
|
|
|
demux->current_level_time_video = DEFAULT_CURRENT_LEVEL_TIME_VIDEO;
|
|
demux->current_level_time_audio = DEFAULT_CURRENT_LEVEL_TIME_AUDIO;
|
|
|
|
gst_element_add_pad (GST_ELEMENT (demux), demux->sinkpad);
|
|
|
|
demux->priv->duration = GST_CLOCK_TIME_NONE;
|
|
|
|
/* Output combiner */
|
|
demux->priv->flowcombiner = gst_flow_combiner_new ();
|
|
|
|
/* Output task */
|
|
g_rec_mutex_init (&demux->priv->output_lock);
|
|
demux->priv->output_task =
|
|
gst_task_new ((GstTaskFunction) gst_adaptive_demux_output_loop, demux,
|
|
NULL);
|
|
gst_task_set_lock (demux->priv->output_task, &demux->priv->output_lock);
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_finalize (GObject * object)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (object);
|
|
GstAdaptiveDemuxPrivate *priv = demux->priv;
|
|
|
|
GST_DEBUG_OBJECT (object, "finalize");
|
|
|
|
g_object_unref (priv->input_adapter);
|
|
|
|
downloadhelper_free (demux->download_helper);
|
|
|
|
g_rec_mutex_clear (&demux->priv->manifest_lock);
|
|
g_mutex_clear (&demux->priv->api_lock);
|
|
g_mutex_clear (&demux->priv->segment_lock);
|
|
|
|
g_mutex_clear (&demux->priv->buffering_lock);
|
|
|
|
gst_adaptive_demux_loop_unref (demux->priv->scheduler_task);
|
|
|
|
/* The input period is present after a reset, clear it now */
|
|
if (demux->input_period)
|
|
gst_adaptive_demux_period_unref (demux->input_period);
|
|
|
|
if (demux->realtime_clock) {
|
|
gst_adaptive_demux_clock_unref (demux->realtime_clock);
|
|
demux->realtime_clock = NULL;
|
|
}
|
|
g_object_unref (priv->output_task);
|
|
g_rec_mutex_clear (&priv->output_lock);
|
|
|
|
gst_flow_combiner_free (priv->flowcombiner);
|
|
|
|
g_queue_free (priv->periods);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_check_streams_aware (GstAdaptiveDemux * demux)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstObject *parent = gst_object_get_parent (GST_OBJECT (demux));
|
|
|
|
if (parent) {
|
|
ret = GST_OBJECT_FLAG_IS_SET (parent, GST_BIN_FLAG_STREAMS_AWARE);
|
|
gst_object_unref (parent);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_adaptive_demux_change_state (GstElement * element,
|
|
GstStateChange transition)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (element);
|
|
GstStateChangeReturn result = GST_STATE_CHANGE_FAILURE;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (!gst_adaptive_demux_check_streams_aware (demux)) {
|
|
GST_ELEMENT_ERROR (demux, CORE, STATE_CHANGE,
|
|
(_("Element requires a streams-aware context.")), (NULL));
|
|
goto fail_out;
|
|
}
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
if (g_atomic_int_compare_and_exchange (&demux->running, TRUE, FALSE))
|
|
GST_DEBUG_OBJECT (demux, "demuxer has stopped running");
|
|
|
|
gst_adaptive_demux_loop_stop (demux->priv->scheduler_task, TRUE);
|
|
downloadhelper_stop (demux->download_helper);
|
|
|
|
TRACKS_LOCK (demux);
|
|
demux->priv->flushing = TRUE;
|
|
g_cond_signal (&demux->priv->tracks_add);
|
|
gst_task_stop (demux->priv->output_task);
|
|
TRACKS_UNLOCK (demux);
|
|
|
|
gst_task_join (demux->priv->output_task);
|
|
|
|
GST_API_LOCK (demux);
|
|
gst_adaptive_demux_reset (demux);
|
|
GST_API_UNLOCK (demux);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
GST_API_LOCK (demux);
|
|
gst_adaptive_demux_reset (demux);
|
|
|
|
gst_adaptive_demux_loop_start (demux->priv->scheduler_task);
|
|
if (g_atomic_int_get (&demux->priv->have_manifest))
|
|
gst_adaptive_demux_start_manifest_update_task (demux);
|
|
GST_API_UNLOCK (demux);
|
|
if (g_atomic_int_compare_and_exchange (&demux->running, FALSE, TRUE))
|
|
GST_DEBUG_OBJECT (demux, "demuxer has started running");
|
|
/* gst_task_start (demux->priv->output_task); */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* this must be run with the scheduler and output tasks stopped. */
|
|
result = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
/* Start download task */
|
|
downloadhelper_start (demux->download_helper);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
fail_out:
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_output_slot_free (GstAdaptiveDemux * demux,
|
|
OutputSlot * slot)
|
|
{
|
|
GstEvent *eos = gst_event_new_eos ();
|
|
GST_DEBUG_OBJECT (slot->pad, "Releasing slot");
|
|
|
|
/* FIXME: The slot might not have output any data, caps or segment yet */
|
|
gst_event_set_seqnum (eos, demux->priv->segment_seqnum);
|
|
gst_pad_push_event (slot->pad, eos);
|
|
gst_pad_set_active (slot->pad, FALSE);
|
|
gst_flow_combiner_remove_pad (demux->priv->flowcombiner, slot->pad);
|
|
gst_element_remove_pad (GST_ELEMENT_CAST (demux), slot->pad);
|
|
if (slot->track)
|
|
gst_adaptive_demux_track_unref (slot->track);
|
|
if (slot->pending_track)
|
|
gst_adaptive_demux_track_unref (slot->pending_track);
|
|
|
|
g_free (slot);
|
|
}
|
|
|
|
static OutputSlot *
|
|
gst_adaptive_demux_output_slot_new (GstAdaptiveDemux * demux,
|
|
GstStreamType streamtype)
|
|
{
|
|
OutputSlot *slot;
|
|
GstPadTemplate *tmpl;
|
|
gchar *name;
|
|
|
|
switch (streamtype) {
|
|
case GST_STREAM_TYPE_AUDIO:
|
|
name = g_strdup_printf ("audio_%02u", demux->priv->n_audio_streams++);
|
|
tmpl =
|
|
gst_static_pad_template_get (&gst_adaptive_demux_audiosrc_template);
|
|
break;
|
|
case GST_STREAM_TYPE_VIDEO:
|
|
name = g_strdup_printf ("video_%02u", demux->priv->n_video_streams++);
|
|
tmpl =
|
|
gst_static_pad_template_get (&gst_adaptive_demux_videosrc_template);
|
|
break;
|
|
case GST_STREAM_TYPE_TEXT:
|
|
name =
|
|
g_strdup_printf ("subtitle_%02u", demux->priv->n_subtitle_streams++);
|
|
tmpl =
|
|
gst_static_pad_template_get
|
|
(&gst_adaptive_demux_subtitlesrc_template);
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
return NULL;
|
|
}
|
|
|
|
slot = g_new0 (OutputSlot, 1);
|
|
slot->type = streamtype;
|
|
slot->pushed_timed_data = FALSE;
|
|
|
|
/* Create and activate new pads */
|
|
slot->pad = gst_pad_new_from_template (tmpl, name);
|
|
g_free (name);
|
|
gst_object_unref (tmpl);
|
|
|
|
gst_element_add_pad (GST_ELEMENT_CAST (demux), slot->pad);
|
|
gst_flow_combiner_add_pad (demux->priv->flowcombiner, slot->pad);
|
|
gst_pad_set_active (slot->pad, TRUE);
|
|
|
|
gst_pad_set_query_function (slot->pad,
|
|
GST_DEBUG_FUNCPTR (gst_adaptive_demux_src_query));
|
|
gst_pad_set_event_function (slot->pad,
|
|
GST_DEBUG_FUNCPTR (gst_adaptive_demux_src_event));
|
|
|
|
gst_pad_set_element_private (slot->pad, slot);
|
|
|
|
GST_INFO_OBJECT (demux, "Created output slot %s:%s",
|
|
GST_DEBUG_PAD_NAME (slot->pad));
|
|
return slot;
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_scheduler_unblock_fragment_downloads_cb (GstAdaptiveDemux *
|
|
demux)
|
|
{
|
|
GList *iter;
|
|
|
|
GST_INFO_OBJECT (demux, "Unblocking streams' fragment downloads");
|
|
demux->priv->streams_can_download_fragments = TRUE;
|
|
|
|
iter = demux->input_period->streams;
|
|
|
|
for (; iter; iter = g_list_next (iter)) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
gst_adaptive_demux2_stream_on_can_download_fragments (stream);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* must be called with the scheduler lock */
|
|
static void
|
|
gst_adaptive_demux_set_streams_can_download_fragments (GstAdaptiveDemux * demux,
|
|
gboolean streams_can_download_fragments)
|
|
{
|
|
if (streams_can_download_fragments) {
|
|
gst_adaptive_demux_loop_call (demux->priv->scheduler_task, (GSourceFunc)
|
|
gst_adaptive_demux_scheduler_unblock_fragment_downloads_cb, demux,
|
|
NULL);
|
|
} else {
|
|
demux->priv->streams_can_download_fragments =
|
|
streams_can_download_fragments;
|
|
}
|
|
|
|
}
|
|
|
|
/* Called:
|
|
* * After `process_manifest` or when a period starts
|
|
* * Or when all tracks have been created
|
|
*
|
|
* Goes over tracks and creates the collection
|
|
*
|
|
* Returns TRUE if the collection was fully created.
|
|
*
|
|
* Must be called with MANIFEST_LOCK and TRACKS_LOCK taken.
|
|
* */
|
|
static gboolean
|
|
gst_adaptive_demux_update_collection (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemuxPeriod * period)
|
|
{
|
|
GstStreamCollection *collection;
|
|
GList *iter;
|
|
|
|
GST_DEBUG_OBJECT (demux, "tracks_changed : %d", period->tracks_changed);
|
|
|
|
if (!period->tracks_changed) {
|
|
GST_DEBUG_OBJECT (demux, "Tracks didn't change");
|
|
return TRUE;
|
|
}
|
|
|
|
if (!period->tracks) {
|
|
GST_WARNING_OBJECT (demux, "No tracks registered/present");
|
|
return FALSE;
|
|
}
|
|
|
|
if (gst_adaptive_demux_period_has_pending_tracks (period)) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Streams still have pending tracks, not creating/updating collection");
|
|
return FALSE;
|
|
}
|
|
|
|
/* Update collection */
|
|
collection = gst_stream_collection_new ("adaptivedemux");
|
|
|
|
for (iter = period->tracks; iter; iter = iter->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) iter->data;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Adding '%s' to collection", track->stream_id);
|
|
gst_stream_collection_add_stream (collection,
|
|
gst_object_ref (track->stream_object));
|
|
}
|
|
|
|
if (period->collection)
|
|
gst_object_unref (period->collection);
|
|
period->collection = collection;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Called for the output period:
|
|
* * after `update_collection()` if the input period is the same as the output period
|
|
* * When the output period changes
|
|
*
|
|
* Must be called with MANIFEST_LOCK and TRACKS_LOCK taken.
|
|
*/
|
|
static gboolean
|
|
gst_adaptive_demux_post_collection (GstAdaptiveDemux * demux)
|
|
{
|
|
GstStreamCollection *collection;
|
|
GstAdaptiveDemuxPeriod *period = demux->output_period;
|
|
guint32 seqnum = g_atomic_int_get (&demux->priv->requested_selection_seqnum);
|
|
|
|
g_return_val_if_fail (period, FALSE);
|
|
if (!period->collection) {
|
|
GST_DEBUG_OBJECT (demux, "No collection available yet");
|
|
return TRUE;
|
|
}
|
|
|
|
collection = period->collection;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Posting collection for period %d",
|
|
period->period_num);
|
|
|
|
/* Post collection */
|
|
TRACKS_UNLOCK (demux);
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (demux),
|
|
gst_message_new_stream_collection (GST_OBJECT (demux), collection));
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
TRACKS_LOCK (demux);
|
|
|
|
/* If no stream selection was handled, make a default selection */
|
|
if (seqnum == g_atomic_int_get (&demux->priv->requested_selection_seqnum)) {
|
|
gst_adaptive_demux_period_select_default_tracks (demux,
|
|
demux->output_period);
|
|
}
|
|
|
|
/* Make sure the output task is running */
|
|
if (gst_adaptive_demux2_is_running (demux)) {
|
|
demux->priv->flushing = FALSE;
|
|
GST_DEBUG_OBJECT (demux, "Starting the output task");
|
|
gst_task_start (demux->priv->output_task);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Called from the sinkpad's input thread with
|
|
* the SCHEDULER lock held */
|
|
static gboolean
|
|
handle_incoming_manifest (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *demux_class;
|
|
GstQuery *query;
|
|
gboolean query_res;
|
|
gboolean ret = TRUE;
|
|
gsize available;
|
|
GstBuffer *manifest_buffer;
|
|
|
|
GST_API_LOCK (demux);
|
|
GST_MANIFEST_LOCK (demux);
|
|
|
|
demux_class = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
|
|
available = gst_adapter_available (demux->priv->input_adapter);
|
|
|
|
if (available == 0)
|
|
goto eos_without_data;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Got EOS on the sink pad: manifest fetched");
|
|
|
|
/* Need to get the URI to use it as a base to generate the fragment's
|
|
* uris */
|
|
query = gst_query_new_uri ();
|
|
query_res = gst_pad_peer_query (demux->sinkpad, query);
|
|
if (query_res) {
|
|
gchar *uri, *redirect_uri;
|
|
gboolean permanent;
|
|
|
|
gst_query_parse_uri (query, &uri);
|
|
gst_query_parse_uri_redirection (query, &redirect_uri);
|
|
gst_query_parse_uri_redirection_permanent (query, &permanent);
|
|
|
|
if (permanent && redirect_uri) {
|
|
demux->manifest_uri = redirect_uri;
|
|
demux->manifest_base_uri = NULL;
|
|
g_free (uri);
|
|
} else {
|
|
demux->manifest_uri = uri;
|
|
demux->manifest_base_uri = redirect_uri;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "Fetched manifest at URI: %s (base: %s)",
|
|
demux->manifest_uri, GST_STR_NULL (demux->manifest_base_uri));
|
|
|
|
if (!g_str_has_prefix (demux->manifest_uri, "data:")
|
|
&& !g_str_has_prefix (demux->manifest_uri, "http://")
|
|
&& !g_str_has_prefix (demux->manifest_uri, "https://")) {
|
|
GST_ELEMENT_ERROR (demux, STREAM, DEMUX,
|
|
(_("Invalid manifest URI")),
|
|
("Manifest URI needs to use either data:, http:// or https://"));
|
|
ret = FALSE;
|
|
goto unlock_out;
|
|
}
|
|
} else {
|
|
GST_WARNING_OBJECT (demux, "Upstream URI query failed.");
|
|
}
|
|
gst_query_unref (query);
|
|
|
|
/* If somehow we didn't receive a stream-start with a group_id, pick one now */
|
|
if (!demux->have_group_id) {
|
|
demux->have_group_id = TRUE;
|
|
demux->group_id = gst_util_group_id_next ();
|
|
}
|
|
|
|
/* Let the subclass parse the manifest */
|
|
manifest_buffer =
|
|
gst_adapter_take_buffer (demux->priv->input_adapter, available);
|
|
ret = demux_class->process_manifest (demux, manifest_buffer);
|
|
gst_buffer_unref (manifest_buffer);
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (demux),
|
|
gst_message_new_element (GST_OBJECT_CAST (demux),
|
|
gst_structure_new (GST_ADAPTIVE_DEMUX_STATISTICS_MESSAGE_NAME,
|
|
"manifest-uri", G_TYPE_STRING,
|
|
demux->manifest_uri, "uri", G_TYPE_STRING,
|
|
demux->manifest_uri,
|
|
"manifest-download-start", GST_TYPE_CLOCK_TIME,
|
|
GST_CLOCK_TIME_NONE,
|
|
"manifest-download-stop", GST_TYPE_CLOCK_TIME,
|
|
gst_util_get_timestamp (), NULL)));
|
|
|
|
if (!ret)
|
|
goto invalid_manifest;
|
|
|
|
/* Streams should have been added to the input period if the manifest parsing
|
|
* succeeded */
|
|
if (!demux->input_period->streams)
|
|
goto no_streams;
|
|
|
|
g_atomic_int_set (&demux->priv->have_manifest, TRUE);
|
|
|
|
GST_DEBUG_OBJECT (demux, "Manifest was processed, setting ourselves up");
|
|
/* Send duration message */
|
|
if (!gst_adaptive_demux_is_live (demux)) {
|
|
GstClockTime duration = demux_class->get_duration (demux);
|
|
|
|
demux->priv->duration = duration;
|
|
if (duration != GST_CLOCK_TIME_NONE) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Sending duration message : %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (duration));
|
|
gst_element_post_message (GST_ELEMENT (demux),
|
|
gst_message_new_duration_changed (GST_OBJECT (demux)));
|
|
} else {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"media duration unknown, can not send the duration message");
|
|
}
|
|
}
|
|
|
|
TRACKS_LOCK (demux);
|
|
/* New streams/tracks will have been added to the input period */
|
|
/* The input period has streams, make it the active output period */
|
|
/* FIXME : Factorize this into a function to make a period active */
|
|
demux->output_period = gst_adaptive_demux_period_ref (demux->input_period);
|
|
ret = gst_adaptive_demux_update_collection (demux, demux->output_period) &&
|
|
gst_adaptive_demux_post_collection (demux);
|
|
TRACKS_UNLOCK (demux);
|
|
|
|
gst_adaptive_demux_set_streams_can_download_fragments (demux, FALSE);
|
|
gst_adaptive_demux_prepare_streams (demux,
|
|
gst_adaptive_demux_is_live (demux));
|
|
gst_adaptive_demux_set_streams_can_download_fragments (demux, TRUE);
|
|
gst_adaptive_demux_start_tasks (demux);
|
|
gst_adaptive_demux_start_manifest_update_task (demux);
|
|
|
|
unlock_out:
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
eos_without_data:
|
|
{
|
|
GST_WARNING_OBJECT (demux, "Received EOS without a manifest.");
|
|
ret = FALSE;
|
|
goto unlock_out;
|
|
}
|
|
|
|
no_streams:
|
|
{
|
|
/* no streams */
|
|
GST_WARNING_OBJECT (demux, "No streams created from manifest");
|
|
GST_ELEMENT_ERROR (demux, STREAM, DEMUX,
|
|
(_("This file contains no playable streams.")),
|
|
("No known stream formats found at the Manifest"));
|
|
ret = FALSE;
|
|
goto unlock_out;
|
|
}
|
|
|
|
invalid_manifest:
|
|
{
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
|
|
/* In most cases, this will happen if we set a wrong url in the
|
|
* source element and we have received the 404 HTML response instead of
|
|
* the manifest */
|
|
GST_ELEMENT_ERROR (demux, STREAM, DECODE, ("Invalid manifest."), (NULL));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
struct http_headers_collector
|
|
{
|
|
GstAdaptiveDemux *demux;
|
|
gchar **cookies;
|
|
};
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_handle_upstream_http_header (GQuark field_id,
|
|
const GValue * value, gpointer userdata)
|
|
{
|
|
struct http_headers_collector *hdr_data = userdata;
|
|
GstAdaptiveDemux *demux = hdr_data->demux;
|
|
const gchar *field_name = g_quark_to_string (field_id);
|
|
|
|
if (G_UNLIKELY (value == NULL))
|
|
return TRUE; /* This should not happen */
|
|
|
|
if (g_ascii_strcasecmp (field_name, "User-Agent") == 0) {
|
|
const gchar *user_agent = g_value_get_string (value);
|
|
|
|
GST_INFO_OBJECT (demux, "User-Agent : %s", GST_STR_NULL (user_agent));
|
|
downloadhelper_set_user_agent (demux->download_helper, user_agent);
|
|
}
|
|
|
|
if ((g_ascii_strcasecmp (field_name, "Cookie") == 0) ||
|
|
g_ascii_strcasecmp (field_name, "Set-Cookie") == 0) {
|
|
guint i = 0, prev_len = 0, total_len = 0;
|
|
gchar **cookies = NULL;
|
|
|
|
if (hdr_data->cookies != NULL)
|
|
prev_len = g_strv_length (hdr_data->cookies);
|
|
|
|
if (GST_VALUE_HOLDS_ARRAY (value)) {
|
|
total_len = gst_value_array_get_size (value) + prev_len;
|
|
cookies = (gchar **) g_malloc0 ((total_len + 1) * sizeof (gchar *));
|
|
|
|
for (i = 0; i < gst_value_array_get_size (value); i++) {
|
|
GST_INFO_OBJECT (demux, "%s : %s", g_quark_to_string (field_id),
|
|
g_value_get_string (gst_value_array_get_value (value, i)));
|
|
cookies[i] = g_value_dup_string (gst_value_array_get_value (value, i));
|
|
}
|
|
} else if (G_VALUE_HOLDS_STRING (value)) {
|
|
total_len = 1 + prev_len;
|
|
cookies = (gchar **) g_malloc0 ((total_len + 1) * sizeof (gchar *));
|
|
|
|
GST_INFO_OBJECT (demux, "%s : %s", g_quark_to_string (field_id),
|
|
g_value_get_string (value));
|
|
cookies[0] = g_value_dup_string (value);
|
|
} else {
|
|
GST_WARNING_OBJECT (demux, "%s field is not string or array",
|
|
g_quark_to_string (field_id));
|
|
}
|
|
|
|
if (cookies) {
|
|
if (prev_len) {
|
|
guint j;
|
|
for (j = 0; j < prev_len; j++) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Append existing cookie %s", hdr_data->cookies[j]);
|
|
cookies[i + j] = g_strdup (hdr_data->cookies[j]);
|
|
}
|
|
}
|
|
cookies[total_len] = NULL;
|
|
|
|
g_strfreev (hdr_data->cookies);
|
|
hdr_data->cookies = cookies;
|
|
}
|
|
}
|
|
|
|
if (g_ascii_strcasecmp (field_name, "Referer") == 0) {
|
|
const gchar *referer = g_value_get_string (value);
|
|
GST_INFO_OBJECT (demux, "Referer : %s", GST_STR_NULL (referer));
|
|
|
|
downloadhelper_set_referer (demux->download_helper, referer);
|
|
}
|
|
|
|
/* Date header can be used to estimate server offset */
|
|
if (g_ascii_strcasecmp (field_name, "Date") == 0) {
|
|
const gchar *http_date = g_value_get_string (value);
|
|
|
|
if (http_date) {
|
|
GstDateTime *datetime =
|
|
gst_adaptive_demux_util_parse_http_head_date (http_date);
|
|
|
|
if (datetime) {
|
|
GDateTime *utc_now = gst_date_time_to_g_date_time (datetime);
|
|
gchar *date_string = gst_date_time_to_iso8601_string (datetime);
|
|
|
|
GST_INFO_OBJECT (demux,
|
|
"HTTP response Date %s", GST_STR_NULL (date_string));
|
|
g_free (date_string);
|
|
|
|
gst_adaptive_demux_clock_set_utc_time (demux->realtime_clock, utc_now);
|
|
|
|
g_date_time_unref (utc_now);
|
|
gst_date_time_unref (datetime);
|
|
}
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_sink_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (parent);
|
|
gboolean ret;
|
|
|
|
switch (event->type) {
|
|
case GST_EVENT_FLUSH_STOP:{
|
|
GST_API_LOCK (demux);
|
|
GST_MANIFEST_LOCK (demux);
|
|
|
|
gst_adaptive_demux_reset (demux);
|
|
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
|
|
return ret;
|
|
}
|
|
case GST_EVENT_EOS:
|
|
{
|
|
if (GST_ADAPTIVE_SCHEDULER_LOCK (demux)) {
|
|
if (!handle_incoming_manifest (demux)) {
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
return gst_pad_event_default (pad, parent, event);
|
|
}
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
} else {
|
|
GST_ERROR_OBJECT (demux,
|
|
"Failed to acquire scheduler to handle manifest");
|
|
return gst_pad_event_default (pad, parent, event);
|
|
}
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
}
|
|
case GST_EVENT_STREAM_START:
|
|
if (gst_event_parse_group_id (event, &demux->group_id))
|
|
demux->have_group_id = TRUE;
|
|
else
|
|
demux->have_group_id = FALSE;
|
|
/* Swallow stream-start, we'll push our own */
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
case GST_EVENT_SEGMENT:
|
|
/* Swallow newsegments, we'll push our own */
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
case GST_EVENT_CUSTOM_DOWNSTREAM_STICKY:{
|
|
const GstStructure *structure = gst_event_get_structure (event);
|
|
struct http_headers_collector c = { demux, NULL };
|
|
|
|
if (gst_structure_has_name (structure, "http-headers")) {
|
|
if (gst_structure_has_field (structure, "request-headers")) {
|
|
GstStructure *req_headers = NULL;
|
|
gst_structure_get (structure, "request-headers", GST_TYPE_STRUCTURE,
|
|
&req_headers, NULL);
|
|
if (req_headers) {
|
|
gst_structure_foreach (req_headers,
|
|
gst_adaptive_demux_handle_upstream_http_header, &c);
|
|
gst_structure_free (req_headers);
|
|
}
|
|
}
|
|
if (gst_structure_has_field (structure, "response-headers")) {
|
|
GstStructure *res_headers = NULL;
|
|
gst_structure_get (structure, "response-headers", GST_TYPE_STRUCTURE,
|
|
&res_headers, NULL);
|
|
if (res_headers) {
|
|
gst_structure_foreach (res_headers,
|
|
gst_adaptive_demux_handle_upstream_http_header, &c);
|
|
gst_structure_free (res_headers);
|
|
}
|
|
}
|
|
|
|
if (c.cookies)
|
|
downloadhelper_set_cookies (demux->download_helper, c.cookies);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return gst_pad_event_default (pad, parent, event);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_adaptive_demux_sink_chain (GstPad * pad, GstObject * parent,
|
|
GstBuffer * buffer)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (parent);
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
|
|
gst_adapter_push (demux->priv->input_adapter, buffer);
|
|
|
|
GST_INFO_OBJECT (demux, "Received manifest buffer, total size is %i bytes",
|
|
(gint) gst_adapter_available (demux->priv->input_adapter));
|
|
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
|
|
/* Called with TRACKS_LOCK taken */
|
|
static void
|
|
gst_adaptive_demux_period_reset_tracks (GstAdaptiveDemuxPeriod * period)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = period->tracks; tmp; tmp = tmp->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) tmp->data;
|
|
|
|
gst_adaptive_demux_track_flush (track);
|
|
if (gst_pad_is_active (track->sinkpad)) {
|
|
gst_pad_set_active (track->sinkpad, FALSE);
|
|
gst_pad_set_active (track->sinkpad, TRUE);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Resets all tracks to their initial state, ready to receive new data. */
|
|
static void
|
|
gst_adaptive_demux_reset_tracks (GstAdaptiveDemux * demux)
|
|
{
|
|
TRACKS_LOCK (demux);
|
|
g_queue_foreach (demux->priv->periods,
|
|
(GFunc) gst_adaptive_demux_period_reset_tracks, NULL);
|
|
TRACKS_UNLOCK (demux);
|
|
}
|
|
|
|
/* Subclasses will call this function to ensure that a new input period is
|
|
* available to receive new streams and tracks */
|
|
gboolean
|
|
gst_adaptive_demux_start_new_period (GstAdaptiveDemux * demux)
|
|
{
|
|
if (demux->input_period && !demux->input_period->prepared) {
|
|
GST_DEBUG_OBJECT (demux, "Using existing input period");
|
|
return TRUE;
|
|
}
|
|
|
|
if (demux->input_period) {
|
|
GST_DEBUG_OBJECT (demux, "Marking that previous period has a next one");
|
|
demux->input_period->has_next_period = TRUE;
|
|
}
|
|
GST_DEBUG_OBJECT (demux, "Setting up new period");
|
|
|
|
demux->input_period = gst_adaptive_demux_period_new (demux);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
static void
|
|
gst_adaptive_demux_reset (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
GList *iter;
|
|
|
|
gst_adaptive_demux_stop_tasks (demux, TRUE);
|
|
|
|
if (klass->reset)
|
|
klass->reset (demux);
|
|
|
|
/* Disable and remove all outputs */
|
|
GST_DEBUG_OBJECT (demux, "Disabling and removing all outputs");
|
|
for (iter = demux->priv->outputs; iter; iter = iter->next) {
|
|
gst_adaptive_demux_output_slot_free (demux, (OutputSlot *) iter->data);
|
|
}
|
|
g_list_free (demux->priv->outputs);
|
|
demux->priv->outputs = NULL;
|
|
|
|
g_queue_clear_full (demux->priv->periods,
|
|
(GDestroyNotify) gst_adaptive_demux_period_unref);
|
|
|
|
/* The output period always has an extra ref taken on it */
|
|
if (demux->output_period)
|
|
gst_adaptive_demux_period_unref (demux->output_period);
|
|
demux->output_period = NULL;
|
|
/* The input period doesn't have an extra ref taken on it */
|
|
demux->input_period = NULL;
|
|
|
|
gst_adaptive_demux_start_new_period (demux);
|
|
|
|
g_free (demux->manifest_uri);
|
|
g_free (demux->manifest_base_uri);
|
|
demux->manifest_uri = NULL;
|
|
demux->manifest_base_uri = NULL;
|
|
|
|
gst_adapter_clear (demux->priv->input_adapter);
|
|
g_atomic_int_set (&demux->priv->have_manifest, FALSE);
|
|
|
|
gst_segment_init (&demux->segment, GST_FORMAT_TIME);
|
|
demux->instant_rate_multiplier = 1.0;
|
|
|
|
demux->priv->duration = GST_CLOCK_TIME_NONE;
|
|
|
|
demux->priv->percent = -1;
|
|
demux->priv->is_buffering = TRUE;
|
|
|
|
demux->have_group_id = FALSE;
|
|
demux->group_id = G_MAXUINT;
|
|
demux->priv->segment_seqnum = gst_util_seqnum_next ();
|
|
|
|
demux->priv->global_output_position = 0;
|
|
|
|
demux->priv->n_audio_streams = 0;
|
|
demux->priv->n_video_streams = 0;
|
|
demux->priv->n_subtitle_streams = 0;
|
|
|
|
gst_flow_combiner_reset (demux->priv->flowcombiner);
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_query (GstElement * element, GstQuery * query)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (element);
|
|
|
|
GST_LOG_OBJECT (demux, "%" GST_PTR_FORMAT, query);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_BUFFERING:
|
|
{
|
|
GstFormat format;
|
|
gst_query_parse_buffering_range (query, &format, NULL, NULL, NULL);
|
|
|
|
if (!demux->output_period) {
|
|
if (format != GST_FORMAT_TIME) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"No period setup yet, can't answer non-TIME buffering queries");
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"No period setup yet, but still answering buffering query");
|
|
return TRUE;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return GST_ELEMENT_CLASS (parent_class)->query (element, query);
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (element);
|
|
gboolean res = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Received event %" GST_PTR_FORMAT, event);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SEEK:
|
|
{
|
|
res = gst_adaptive_demux_handle_seek_event (demux, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_SELECT_STREAMS:
|
|
{
|
|
res = gst_adaptive_demux_handle_select_streams_event (demux, event);
|
|
break;
|
|
}
|
|
default:
|
|
res = GST_ELEMENT_CLASS (parent_class)->send_event (element, event);
|
|
break;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
/* MANIFEST_LOCK held. Find the stream that owns the given element */
|
|
static GstAdaptiveDemux2Stream *
|
|
find_stream_for_element_locked (GstAdaptiveDemux * demux, GstObject * o)
|
|
{
|
|
GList *iter;
|
|
|
|
/* We only look in the streams of the input period (i.e. with active streams) */
|
|
for (iter = demux->input_period->streams; iter; iter = iter->next) {
|
|
GstAdaptiveDemux2Stream *stream = (GstAdaptiveDemux2Stream *) iter->data;
|
|
if (gst_object_has_as_ancestor (o, GST_OBJECT_CAST (stream->parsebin))) {
|
|
return stream;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_handle_stream_collection_msg (GstAdaptiveDemux * demux,
|
|
GstMessage * msg)
|
|
{
|
|
GstAdaptiveDemux2Stream *stream;
|
|
GstStreamCollection *collection = NULL;
|
|
gboolean pending_tracks_activated = FALSE;
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
|
|
stream = find_stream_for_element_locked (demux, GST_MESSAGE_SRC (msg));
|
|
if (stream == NULL) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Failed to locate stream for collection message");
|
|
goto beach;
|
|
}
|
|
|
|
gst_message_parse_stream_collection (msg, &collection);
|
|
if (!collection)
|
|
goto beach;
|
|
|
|
TRACKS_LOCK (demux);
|
|
|
|
if (!gst_adaptive_demux2_stream_handle_collection (stream, collection,
|
|
&pending_tracks_activated)) {
|
|
TRACKS_UNLOCK (demux);
|
|
|
|
GST_ELEMENT_ERROR (demux, STREAM, DEMUX,
|
|
(_("Stream format can't be handled")),
|
|
("The streams provided by the multiplex are ambiguous"));
|
|
goto beach;
|
|
}
|
|
|
|
if (pending_tracks_activated) {
|
|
/* If pending tracks were handled, then update the demuxer collection */
|
|
if (gst_adaptive_demux_update_collection (demux, demux->input_period) &&
|
|
demux->input_period == demux->output_period) {
|
|
gst_adaptive_demux_post_collection (demux);
|
|
}
|
|
|
|
/* If we discovered pending tracks and we no longer have any, we can ensure
|
|
* selected tracks are started */
|
|
if (!gst_adaptive_demux_period_has_pending_tracks (demux->input_period)) {
|
|
GList *iter = demux->input_period->streams;
|
|
for (; iter; iter = iter->next) {
|
|
GstAdaptiveDemux2Stream *new_stream = iter->data;
|
|
|
|
/* The stream that posted this collection was already started. If a
|
|
* different stream is now selected, start it */
|
|
if (stream != new_stream
|
|
&& gst_adaptive_demux2_stream_is_selected_locked (new_stream))
|
|
gst_adaptive_demux2_stream_start (new_stream);
|
|
}
|
|
}
|
|
}
|
|
TRACKS_UNLOCK (demux);
|
|
|
|
beach:
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
|
|
if (collection)
|
|
gst_object_unref (collection);
|
|
gst_message_unref (msg);
|
|
msg = NULL;
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_handle_message (GstBin * bin, GstMessage * msg)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (bin);
|
|
|
|
switch (GST_MESSAGE_TYPE (msg)) {
|
|
case GST_MESSAGE_STREAM_COLLECTION:
|
|
{
|
|
gst_adaptive_demux_handle_stream_collection_msg (demux, msg);
|
|
return;
|
|
}
|
|
case GST_MESSAGE_ERROR:{
|
|
GstAdaptiveDemux2Stream *stream = NULL;
|
|
GError *err = NULL;
|
|
gchar *debug = NULL;
|
|
gchar *new_error = NULL;
|
|
const GstStructure *details = NULL;
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
|
|
stream = find_stream_for_element_locked (demux, GST_MESSAGE_SRC (msg));
|
|
if (stream == NULL) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Failed to locate stream for errored element");
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
break;
|
|
}
|
|
|
|
gst_message_parse_error (msg, &err, &debug);
|
|
|
|
GST_WARNING_OBJECT (demux,
|
|
"Source posted error: %d:%d %s (%s)", err->domain, err->code,
|
|
err->message, debug);
|
|
|
|
if (debug)
|
|
new_error = g_strdup_printf ("%s: %s\n", err->message, debug);
|
|
if (new_error) {
|
|
g_free (err->message);
|
|
err->message = new_error;
|
|
}
|
|
|
|
gst_message_parse_error_details (msg, &details);
|
|
if (details) {
|
|
gst_structure_get_uint (details, "http-status-code",
|
|
&stream->last_status_code);
|
|
}
|
|
|
|
/* error, but ask to retry */
|
|
if (GST_ADAPTIVE_SCHEDULER_LOCK (demux)) {
|
|
gst_adaptive_demux2_stream_parse_error (stream, err);
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
}
|
|
|
|
g_error_free (err);
|
|
g_free (debug);
|
|
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
|
|
gst_message_unref (msg);
|
|
msg = NULL;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (msg)
|
|
GST_BIN_CLASS (parent_class)->handle_message (bin, msg);
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
GstClockTime
|
|
gst_adaptive_demux_get_period_start_time (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass;
|
|
|
|
klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
|
|
if (klass->get_period_start_time == NULL)
|
|
return 0;
|
|
|
|
return klass->get_period_start_time (demux);
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
static gboolean
|
|
gst_adaptive_demux_prepare_streams (GstAdaptiveDemux * demux,
|
|
gboolean first_and_live)
|
|
{
|
|
GList *iter;
|
|
GstClockTime period_start;
|
|
GstClockTimeDiff min_stream_time = GST_CLOCK_STIME_NONE;
|
|
GList *new_streams;
|
|
|
|
g_return_val_if_fail (demux->input_period->streams, FALSE);
|
|
g_assert (demux->input_period->prepared == FALSE);
|
|
|
|
new_streams = demux->input_period->streams;
|
|
|
|
if (!gst_adaptive_demux2_is_running (demux)) {
|
|
GST_DEBUG_OBJECT (demux, "Not exposing pads due to shutdown");
|
|
return TRUE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Preparing %d streams for period %d , first_and_live:%d",
|
|
g_list_length (new_streams), demux->input_period->period_num,
|
|
first_and_live);
|
|
|
|
for (iter = new_streams; iter; iter = g_list_next (iter)) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
gboolean is_selected =
|
|
gst_adaptive_demux2_stream_is_selected_locked (stream);
|
|
|
|
GST_DEBUG_OBJECT (stream,
|
|
"Preparing stream. Is selected: %d pending_tracks: %d", is_selected,
|
|
stream->pending_tracks);
|
|
|
|
stream->need_header = TRUE;
|
|
stream->discont = TRUE;
|
|
|
|
/* Grab the first stream time for live streams
|
|
* * If the stream is selected
|
|
* * Or it provides dynamic tracks (in which case we need to force an update)
|
|
*/
|
|
if (first_and_live && (is_selected || stream->pending_tracks)) {
|
|
/* TODO we only need the first timestamp, maybe create a simple function to
|
|
* get the current PTS of a fragment ? */
|
|
GST_DEBUG_OBJECT (stream, "Calling update_fragment_info");
|
|
GstFlowReturn flow_ret =
|
|
gst_adaptive_demux2_stream_update_fragment_info (stream);
|
|
|
|
/* Handle fragment info waiting on BUSY */
|
|
while (flow_ret == GST_ADAPTIVE_DEMUX_FLOW_BUSY) {
|
|
if (!gst_adaptive_demux2_stream_wait_prepared (stream))
|
|
break;
|
|
flow_ret = gst_adaptive_demux2_stream_update_fragment_info (stream);
|
|
}
|
|
|
|
if (flow_ret != GST_FLOW_OK) {
|
|
GST_WARNING_OBJECT (stream, "Could not update fragment info. flow: %s",
|
|
gst_flow_get_name (flow_ret));
|
|
continue;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (stream,
|
|
"Got stream time %" GST_STIME_FORMAT,
|
|
GST_STIME_ARGS (stream->fragment.stream_time));
|
|
|
|
if (GST_CLOCK_STIME_IS_VALID (min_stream_time)) {
|
|
min_stream_time = MIN (min_stream_time, stream->fragment.stream_time);
|
|
} else {
|
|
min_stream_time = stream->fragment.stream_time;
|
|
}
|
|
}
|
|
}
|
|
|
|
period_start = gst_adaptive_demux_get_period_start_time (demux);
|
|
|
|
/* For live streams, the subclass is supposed to seek to the current fragment
|
|
* and then tell us its stream time in stream->fragment.stream_time. We now
|
|
* also have to seek our demuxer segment to reflect this.
|
|
*
|
|
* FIXME: This needs some refactoring at some point.
|
|
*/
|
|
if (first_and_live) {
|
|
gst_segment_do_seek (&demux->segment, demux->segment.rate, GST_FORMAT_TIME,
|
|
GST_SEEK_FLAG_FLUSH, GST_SEEK_TYPE_SET, min_stream_time + period_start,
|
|
GST_SEEK_TYPE_NONE, -1, NULL);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"period_start:%" GST_TIME_FORMAT ", min_stream_time:%" GST_STIME_FORMAT
|
|
" demux segment %" GST_SEGMENT_FORMAT,
|
|
GST_TIME_ARGS (period_start), GST_STIME_ARGS (min_stream_time),
|
|
&demux->segment);
|
|
|
|
/* Synchronize stream start/current positions */
|
|
if (min_stream_time == GST_CLOCK_STIME_NONE)
|
|
min_stream_time = period_start;
|
|
else
|
|
min_stream_time += period_start;
|
|
for (iter = new_streams; iter; iter = g_list_next (iter)) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
stream->start_position = stream->current_position = min_stream_time;
|
|
}
|
|
|
|
for (iter = new_streams; iter; iter = g_list_next (iter)) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
stream->compute_segment = TRUE;
|
|
stream->first_and_live = first_and_live;
|
|
}
|
|
demux->priv->qos_earliest_time = GST_CLOCK_TIME_NONE;
|
|
demux->input_period->prepared = TRUE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstAdaptiveDemuxTrack *
|
|
find_track_for_stream_id (GstAdaptiveDemuxPeriod * period, gchar * stream_id)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = period->tracks; tmp; tmp = tmp->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) tmp->data;
|
|
if (!g_strcmp0 (track->stream_id, stream_id))
|
|
return track;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* TRACKS_LOCK hold */
|
|
void
|
|
demux_update_buffering_locked (GstAdaptiveDemux * demux)
|
|
{
|
|
GstClockTime min_level_time = GST_CLOCK_TIME_NONE;
|
|
GstClockTime video_level_time = GST_CLOCK_TIME_NONE;
|
|
GstClockTime audio_level_time = GST_CLOCK_TIME_NONE;
|
|
GList *tmp;
|
|
gint min_percent = -1, percent;
|
|
gboolean all_eos = TRUE;
|
|
|
|
/* Go over all active tracks of the output period and update level */
|
|
|
|
/* Check that all tracks are above their respective low thresholds (different
|
|
* tracks may have different fragment durations yielding different buffering
|
|
* percentages) Overall buffering percent is the lowest. */
|
|
for (tmp = demux->output_period->tracks; tmp; tmp = tmp->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) tmp->data;
|
|
|
|
GST_LOG_ID (track->id,
|
|
"Checking track active:%d selected:%d eos:%d level:%"
|
|
GST_TIME_FORMAT " buffering_threshold:%" GST_TIME_FORMAT,
|
|
track->active, track->selected,
|
|
track->eos, GST_TIME_ARGS (track->level_time),
|
|
GST_TIME_ARGS (track->buffering_threshold));
|
|
|
|
if (track->active && track->selected) {
|
|
if (!track->eos) {
|
|
gint cur_percent;
|
|
|
|
all_eos = FALSE;
|
|
if (min_level_time == GST_CLOCK_TIME_NONE) {
|
|
min_level_time = track->level_time;
|
|
} else if (track->level_time < min_level_time) {
|
|
min_level_time = track->level_time;
|
|
}
|
|
|
|
if (track->type & GST_STREAM_TYPE_VIDEO
|
|
&& video_level_time > track->level_time)
|
|
video_level_time = track->level_time;
|
|
|
|
if (track->type & GST_STREAM_TYPE_AUDIO
|
|
&& audio_level_time > track->level_time)
|
|
audio_level_time = track->level_time;
|
|
|
|
if (track->level_time != GST_CLOCK_TIME_NONE
|
|
&& track->buffering_threshold != 0) {
|
|
cur_percent =
|
|
gst_util_uint64_scale (track->level_time, 100,
|
|
track->buffering_threshold);
|
|
if (min_percent < 0 || cur_percent < min_percent)
|
|
min_percent = cur_percent;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Minimum time level %" GST_TIME_FORMAT " percent %d all_eos:%d",
|
|
GST_TIME_ARGS (min_level_time), min_percent, all_eos);
|
|
|
|
/* Update demuxer video/audio level properties */
|
|
GST_OBJECT_LOCK (demux);
|
|
demux->current_level_time_video = video_level_time;
|
|
demux->current_level_time_audio = audio_level_time;
|
|
GST_OBJECT_UNLOCK (demux);
|
|
|
|
if (min_percent < 0 && !all_eos)
|
|
return;
|
|
|
|
if (min_percent > 100 || all_eos)
|
|
percent = 100;
|
|
else
|
|
percent = MAX (0, min_percent);
|
|
|
|
GST_LOG_OBJECT (demux, "percent : %d %%", percent);
|
|
|
|
if (demux->priv->is_buffering) {
|
|
if (percent >= 100)
|
|
demux->priv->is_buffering = FALSE;
|
|
if (demux->priv->percent != percent) {
|
|
demux->priv->percent = percent;
|
|
demux->priv->percent_changed = TRUE;
|
|
}
|
|
} else if (percent < 1) {
|
|
demux->priv->is_buffering = TRUE;
|
|
if (demux->priv->percent != percent) {
|
|
demux->priv->percent = percent;
|
|
demux->priv->percent_changed = TRUE;
|
|
}
|
|
}
|
|
|
|
if (demux->priv->percent_changed)
|
|
GST_DEBUG_OBJECT (demux, "Percent changed, %d %% is_buffering:%d", percent,
|
|
demux->priv->is_buffering);
|
|
}
|
|
|
|
/* With TRACKS_LOCK held */
|
|
void
|
|
demux_post_buffering_locked (GstAdaptiveDemux * demux)
|
|
{
|
|
gint percent;
|
|
GstMessage *msg;
|
|
|
|
if (!demux->priv->percent_changed)
|
|
return;
|
|
|
|
BUFFERING_LOCK (demux);
|
|
percent = demux->priv->percent;
|
|
msg = gst_message_new_buffering ((GstObject *) demux, percent);
|
|
TRACKS_UNLOCK (demux);
|
|
gst_element_post_message ((GstElement *) demux, msg);
|
|
|
|
BUFFERING_UNLOCK (demux);
|
|
TRACKS_LOCK (demux);
|
|
if (percent == demux->priv->percent)
|
|
demux->priv->percent_changed = FALSE;
|
|
}
|
|
|
|
/* MANIFEST_LOCK and TRACKS_LOCK hold */
|
|
static GstAdaptiveDemux2Stream *
|
|
find_stream_for_track_locked (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemuxTrack * track)
|
|
{
|
|
GList *iter;
|
|
|
|
for (iter = demux->output_period->streams; iter; iter = iter->next) {
|
|
GstAdaptiveDemux2Stream *stream = (GstAdaptiveDemux2Stream *) iter->data;
|
|
if (g_list_find (stream->tracks, track))
|
|
return stream;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Called from seek handler
|
|
*
|
|
* This function is used when a (flushing) seek caused a new period to be activated.
|
|
*
|
|
* This will ensure that:
|
|
* * the current output period is marked as finished (EOS)
|
|
* * Any potential intermediate (non-input/non-output) periods are removed
|
|
* * That the new input period is prepared and ready
|
|
*/
|
|
static void
|
|
gst_adaptive_demux_seek_to_input_period (GstAdaptiveDemux * demux)
|
|
{
|
|
GList *iter;
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Preparing new input period %u", demux->input_period->period_num);
|
|
|
|
/* Prepare the new input period */
|
|
gst_adaptive_demux_update_collection (demux, demux->input_period);
|
|
|
|
/* Transfer the previous selection to the new input period */
|
|
gst_adaptive_demux_period_transfer_selection (demux, demux->input_period,
|
|
demux->output_period);
|
|
gst_adaptive_demux_prepare_streams (demux, FALSE);
|
|
|
|
/* Remove all periods except for the input (last) and output (first) period */
|
|
while (demux->priv->periods->length > 2) {
|
|
GstAdaptiveDemuxPeriod *period = g_queue_pop_nth (demux->priv->periods, 1);
|
|
/* Mark all tracks of the removed period as not selected and EOS so they
|
|
* will be skipped / ignored */
|
|
for (iter = period->tracks; iter; iter = iter->next) {
|
|
GstAdaptiveDemuxTrack *track = iter->data;
|
|
track->selected = FALSE;
|
|
track->eos = TRUE;
|
|
}
|
|
gst_adaptive_demux_period_unref (period);
|
|
}
|
|
|
|
/* Mark all tracks of the output period as EOS so that the output loop
|
|
* will immediately move to the new period */
|
|
for (iter = demux->output_period->tracks; iter; iter = iter->next) {
|
|
GstAdaptiveDemuxTrack *track = iter->data;
|
|
track->eos = TRUE;
|
|
}
|
|
|
|
/* Go over all slots, and clear any pending track */
|
|
for (iter = demux->priv->outputs; iter; iter = iter->next) {
|
|
OutputSlot *slot = (OutputSlot *) iter->data;
|
|
|
|
if (slot->pending_track != NULL) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Removing track '%s' as pending from output of current track '%s'",
|
|
slot->pending_track->id, slot->track->id);
|
|
gst_adaptive_demux_track_unref (slot->pending_track);
|
|
slot->pending_track = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* must be called with scheduler lock taken */
|
|
gboolean
|
|
gst_adaptive_demux_get_live_seek_range (GstAdaptiveDemux * demux,
|
|
gint64 * range_start, gint64 * range_stop)
|
|
{
|
|
GstAdaptiveDemuxClass *klass;
|
|
|
|
klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
|
|
g_return_val_if_fail (klass->get_live_seek_range, FALSE);
|
|
|
|
return klass->get_live_seek_range (demux, range_start, range_stop);
|
|
}
|
|
|
|
/* must be called from scheduler task */
|
|
gboolean
|
|
gst_adaptive_demux2_stream_in_live_seek_range (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemux2Stream * stream)
|
|
{
|
|
gint64 range_start, range_stop;
|
|
if (gst_adaptive_demux_get_live_seek_range (demux, &range_start, &range_stop)) {
|
|
GST_LOG_OBJECT (stream,
|
|
"stream position %" GST_TIME_FORMAT " live seek range %"
|
|
GST_STIME_FORMAT " - %" GST_STIME_FORMAT,
|
|
GST_TIME_ARGS (stream->current_position), GST_STIME_ARGS (range_start),
|
|
GST_STIME_ARGS (range_stop));
|
|
return (stream->current_position >= range_start
|
|
&& stream->current_position <= range_stop);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
static gboolean
|
|
gst_adaptive_demux_can_seek (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass;
|
|
|
|
klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
if (gst_adaptive_demux_is_live (demux)) {
|
|
return klass->get_live_seek_range != NULL;
|
|
}
|
|
|
|
return klass->seek != NULL;
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_setup_streams_for_restart (GstAdaptiveDemux * demux,
|
|
GstSeekType start_type, GstSeekType stop_type)
|
|
{
|
|
GList *iter;
|
|
|
|
for (iter = demux->input_period->streams; iter; iter = g_list_next (iter)) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
|
|
/* Make sure the download loop clears and restarts on the next start,
|
|
* which will recompute the stream segment */
|
|
g_assert (stream->state == GST_ADAPTIVE_DEMUX2_STREAM_STATE_STOPPED ||
|
|
stream->state == GST_ADAPTIVE_DEMUX2_STREAM_STATE_RESTART);
|
|
stream->state = GST_ADAPTIVE_DEMUX2_STREAM_STATE_RESTART;
|
|
stream->start_position = 0;
|
|
|
|
if (demux->segment.rate > 0 && start_type != GST_SEEK_TYPE_NONE)
|
|
stream->start_position = demux->segment.start;
|
|
else if (demux->segment.rate < 0 && stop_type != GST_SEEK_TYPE_NONE)
|
|
stream->start_position = demux->segment.stop;
|
|
}
|
|
}
|
|
|
|
#define IS_SNAP_SEEK(f) (f & (GST_SEEK_FLAG_SNAP_BEFORE | \
|
|
GST_SEEK_FLAG_SNAP_AFTER | \
|
|
GST_SEEK_FLAG_SNAP_NEAREST | \
|
|
GST_SEEK_FLAG_TRICKMODE_KEY_UNITS | \
|
|
GST_SEEK_FLAG_KEY_UNIT))
|
|
#define REMOVE_SNAP_FLAGS(f) (f & ~(GST_SEEK_FLAG_SNAP_BEFORE | \
|
|
GST_SEEK_FLAG_SNAP_AFTER | \
|
|
GST_SEEK_FLAG_SNAP_NEAREST))
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_handle_seek_event (GstAdaptiveDemux * demux,
|
|
GstEvent * event)
|
|
{
|
|
GstAdaptiveDemuxClass *demux_class = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
gdouble rate;
|
|
GstFormat format;
|
|
GstSeekFlags flags;
|
|
GstSeekType start_type, stop_type;
|
|
gint64 start, stop;
|
|
guint32 seqnum;
|
|
gboolean update;
|
|
gboolean ret;
|
|
GstSegment oldsegment;
|
|
GstEvent *flush_event;
|
|
|
|
GST_INFO_OBJECT (demux, "Received seek event");
|
|
|
|
GST_API_LOCK (demux);
|
|
|
|
gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
|
|
&stop_type, &stop);
|
|
|
|
if (format != GST_FORMAT_TIME) {
|
|
GST_API_UNLOCK (demux);
|
|
GST_WARNING_OBJECT (demux,
|
|
"Adaptive demuxers only support TIME-based seeking");
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
|
|
if (flags & GST_SEEK_FLAG_SEGMENT) {
|
|
GST_FIXME_OBJECT (demux, "Handle segment seeks");
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
|
|
seqnum = gst_event_get_seqnum (event);
|
|
|
|
if (!GST_ADAPTIVE_SCHEDULER_LOCK (demux)) {
|
|
GST_LOG_OBJECT (demux, "Failed to acquire scheduler context");
|
|
return FALSE;
|
|
}
|
|
|
|
if (flags & GST_SEEK_FLAG_INSTANT_RATE_CHANGE) {
|
|
/* For instant rate seeks, reply directly and update
|
|
* our segment so the new rate is reflected in any future
|
|
* fragments */
|
|
GstEvent *ev;
|
|
gdouble rate_multiplier;
|
|
|
|
/* instant rate change only supported if direction does not change. All
|
|
* other requirements are already checked before creating the seek event
|
|
* but let's double-check here to be sure */
|
|
if ((demux->segment.rate > 0 && rate < 0) ||
|
|
(demux->segment.rate < 0 && rate > 0) ||
|
|
start_type != GST_SEEK_TYPE_NONE ||
|
|
stop_type != GST_SEEK_TYPE_NONE || (flags & GST_SEEK_FLAG_FLUSH)) {
|
|
GST_ERROR_OBJECT (demux,
|
|
"Instant rate change seeks only supported in the "
|
|
"same direction, without flushing and position change");
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
return FALSE;
|
|
}
|
|
|
|
rate_multiplier = rate / demux->segment.rate;
|
|
|
|
ev = gst_event_new_instant_rate_change (rate_multiplier,
|
|
(GstSegmentFlags) flags);
|
|
gst_event_set_seqnum (ev, seqnum);
|
|
|
|
ret = gst_adaptive_demux_push_src_event (demux, ev);
|
|
|
|
if (ret) {
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_LOCK (demux);
|
|
demux->instant_rate_multiplier = rate_multiplier;
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_UNLOCK (demux);
|
|
}
|
|
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
|
|
return ret;
|
|
}
|
|
|
|
if (!gst_adaptive_demux_can_seek (demux)) {
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
|
|
/* We can only accept flushing seeks from this point onward */
|
|
if (!(flags & GST_SEEK_FLAG_FLUSH)) {
|
|
GST_ERROR_OBJECT (demux,
|
|
"Non-flushing non-instant-rate seeks are not possible");
|
|
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
|
|
if (gst_adaptive_demux_is_live (demux)) {
|
|
gint64 range_start, range_stop;
|
|
gboolean changed = FALSE;
|
|
gboolean start_valid = TRUE, stop_valid = TRUE;
|
|
|
|
if (!gst_adaptive_demux_get_live_seek_range (demux, &range_start,
|
|
&range_stop)) {
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
GST_WARNING_OBJECT (demux, "Failure getting the live seek ranges");
|
|
return FALSE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Live range is %" GST_STIME_FORMAT " %" GST_STIME_FORMAT,
|
|
GST_STIME_ARGS (range_start), GST_STIME_ARGS (range_stop));
|
|
|
|
/* Handle relative positioning for live streams (relative to the range_stop) */
|
|
if (start_type == GST_SEEK_TYPE_END) {
|
|
start = range_stop + start;
|
|
start_type = GST_SEEK_TYPE_SET;
|
|
changed = TRUE;
|
|
}
|
|
if (stop_type == GST_SEEK_TYPE_END) {
|
|
stop = range_stop + stop;
|
|
stop_type = GST_SEEK_TYPE_SET;
|
|
changed = TRUE;
|
|
}
|
|
|
|
/* Adjust the requested start/stop position if it falls beyond the live
|
|
* seek range.
|
|
* The only case where we don't adjust is for the starting point of
|
|
* an accurate seek (start if forward and stop if backwards)
|
|
*/
|
|
if (start_type == GST_SEEK_TYPE_SET && start < range_start &&
|
|
(rate < 0 || !(flags & GST_SEEK_FLAG_ACCURATE))) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"seek before live stream start, setting to range start: %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (range_start));
|
|
start = range_start;
|
|
changed = TRUE;
|
|
}
|
|
/* truncate stop position also if set */
|
|
if (stop_type == GST_SEEK_TYPE_SET && stop > range_stop &&
|
|
(rate > 0 || !(flags & GST_SEEK_FLAG_ACCURATE))) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"seek ending after live start, adjusting to: %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (range_stop));
|
|
stop = range_stop;
|
|
changed = TRUE;
|
|
}
|
|
|
|
if (start_type == GST_SEEK_TYPE_SET && GST_CLOCK_TIME_IS_VALID (start) &&
|
|
(start < range_start || start > range_stop)) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Seek to invalid position start:%" GST_STIME_FORMAT
|
|
" out of seekable range (%" GST_STIME_FORMAT " - %" GST_STIME_FORMAT
|
|
")", GST_STIME_ARGS (start), GST_STIME_ARGS (range_start),
|
|
GST_STIME_ARGS (range_stop));
|
|
start_valid = FALSE;
|
|
}
|
|
if (stop_type == GST_SEEK_TYPE_SET && GST_CLOCK_TIME_IS_VALID (stop) &&
|
|
(stop < range_start || stop > range_stop)) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Seek to invalid position stop:%" GST_STIME_FORMAT
|
|
" out of seekable range (%" GST_STIME_FORMAT " - %" GST_STIME_FORMAT
|
|
")", GST_STIME_ARGS (stop), GST_STIME_ARGS (range_start),
|
|
GST_STIME_ARGS (range_stop));
|
|
stop_valid = FALSE;
|
|
}
|
|
|
|
/* If the seek position is still outside of the seekable range, refuse the seek */
|
|
if (!start_valid || !stop_valid) {
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Re-create seek event with changed/updated values */
|
|
if (changed) {
|
|
gst_event_unref (event);
|
|
event =
|
|
gst_event_new_seek (rate, format, flags,
|
|
start_type, start, stop_type, stop);
|
|
gst_event_set_seqnum (event, seqnum);
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "seek event, %" GST_PTR_FORMAT, event);
|
|
|
|
/* have a backup in case seek fails */
|
|
gst_segment_copy_into (&demux->segment, &oldsegment);
|
|
|
|
GST_DEBUG_OBJECT (demux, "sending flush start");
|
|
flush_event = gst_event_new_flush_start ();
|
|
gst_event_set_seqnum (flush_event, seqnum);
|
|
|
|
gst_adaptive_demux_push_src_event (demux, flush_event);
|
|
|
|
gst_adaptive_demux_stop_tasks (demux, FALSE);
|
|
gst_adaptive_demux_reset_tracks (demux);
|
|
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_LOCK (demux);
|
|
|
|
/*
|
|
* Handle snap seeks as follows:
|
|
* 1) do the snap seeking a (random) active stream
|
|
* 2) use the final position on this stream to seek
|
|
* on the other streams to the same position
|
|
*
|
|
* We can't snap at all streams at the same time as they might end in
|
|
* different positions, so just pick one and align all others to that
|
|
* position.
|
|
*/
|
|
|
|
GstAdaptiveDemux2Stream *stream = NULL;
|
|
GList *iter;
|
|
/* Pick a random active stream on which to do the stream seek */
|
|
for (iter = demux->output_period->streams; iter; iter = iter->next) {
|
|
GstAdaptiveDemux2Stream *cand = iter->data;
|
|
if (gst_adaptive_demux2_stream_is_selected_locked (cand)) {
|
|
stream = cand;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (stream && IS_SNAP_SEEK (flags)) {
|
|
GstClockTimeDiff ts;
|
|
GstSeekFlags stream_seek_flags = flags;
|
|
|
|
/* snap-seek on the chosen stream and then
|
|
* use the resulting position to seek on all streams */
|
|
if (rate >= 0) {
|
|
if (start_type != GST_SEEK_TYPE_NONE)
|
|
ts = start;
|
|
else {
|
|
ts = gst_segment_position_from_running_time (&demux->segment,
|
|
GST_FORMAT_TIME, demux->priv->global_output_position);
|
|
start_type = GST_SEEK_TYPE_SET;
|
|
}
|
|
} else {
|
|
if (stop_type != GST_SEEK_TYPE_NONE)
|
|
ts = stop;
|
|
else {
|
|
stop_type = GST_SEEK_TYPE_SET;
|
|
ts = gst_segment_position_from_running_time (&demux->segment,
|
|
GST_FORMAT_TIME, demux->priv->global_output_position);
|
|
}
|
|
}
|
|
|
|
GstFlowReturn flow_ret =
|
|
gst_adaptive_demux2_stream_seek (stream, rate >= 0, stream_seek_flags,
|
|
ts, &ts);
|
|
|
|
/* Handle fragment info waiting on BUSY */
|
|
while (flow_ret == GST_ADAPTIVE_DEMUX_FLOW_BUSY) {
|
|
if (!gst_adaptive_demux2_stream_wait_prepared (stream))
|
|
break;
|
|
flow_ret = gst_adaptive_demux2_stream_update_fragment_info (stream);
|
|
}
|
|
|
|
if (flow_ret != GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Seek on stream %" GST_PTR_FORMAT " failed with flow return %s",
|
|
stream, gst_flow_get_name (flow_ret));
|
|
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_UNLOCK (demux);
|
|
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
|
|
/* replace event with a new one without snapping to seek on all streams */
|
|
gst_event_unref (event);
|
|
if (rate >= 0) {
|
|
start = ts;
|
|
} else {
|
|
stop = ts;
|
|
}
|
|
event =
|
|
gst_event_new_seek (rate, format, REMOVE_SNAP_FLAGS (flags),
|
|
start_type, start, stop_type, stop);
|
|
GST_DEBUG_OBJECT (demux, "Adapted snap seek to %" GST_PTR_FORMAT, event);
|
|
}
|
|
|
|
ret = gst_segment_do_seek (&demux->segment, rate, format, flags, start_type,
|
|
start, stop_type, stop, &update);
|
|
|
|
if (ret) {
|
|
GST_DEBUG_OBJECT (demux, "Calling subclass seek: %" GST_PTR_FORMAT, event);
|
|
|
|
ret = demux_class->seek (demux, event);
|
|
}
|
|
|
|
if (!ret) {
|
|
/* Is there anything else we can do if it fails? */
|
|
gst_segment_copy_into (&oldsegment, &demux->segment);
|
|
} else {
|
|
demux->priv->segment_seqnum = seqnum;
|
|
}
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_UNLOCK (demux);
|
|
|
|
/* Resetting flow combiner */
|
|
gst_flow_combiner_reset (demux->priv->flowcombiner);
|
|
|
|
GST_DEBUG_OBJECT (demux, "Sending flush stop on all pad");
|
|
flush_event = gst_event_new_flush_stop (TRUE);
|
|
gst_event_set_seqnum (flush_event, seqnum);
|
|
gst_adaptive_demux_push_src_event (demux, flush_event);
|
|
|
|
/* If the seek generated a new period, prepare it */
|
|
if (!demux->input_period->prepared) {
|
|
/* This can only happen on flushing seeks */
|
|
g_assert (flags & GST_SEEK_FLAG_FLUSH);
|
|
gst_adaptive_demux_seek_to_input_period (demux);
|
|
}
|
|
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_LOCK (demux);
|
|
GST_DEBUG_OBJECT (demux, "Demuxer segment after seek: %" GST_SEGMENT_FORMAT,
|
|
&demux->segment);
|
|
gst_adaptive_demux_setup_streams_for_restart (demux, start_type, stop_type);
|
|
demux->priv->qos_earliest_time = GST_CLOCK_TIME_NONE;
|
|
|
|
/* Reset the global output position (running time) for when the output loop restarts */
|
|
demux->priv->global_output_position = 0;
|
|
|
|
/* After a flushing seek, any instant-rate override is undone */
|
|
demux->instant_rate_multiplier = 1.0;
|
|
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_UNLOCK (demux);
|
|
|
|
/* Restart the demux */
|
|
gst_adaptive_demux_set_streams_can_download_fragments (demux, TRUE);
|
|
gst_adaptive_demux_start_tasks (demux);
|
|
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
GST_API_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
handle_stream_selection (GstAdaptiveDemux * demux, GList * streams,
|
|
guint32 seqnum)
|
|
{
|
|
gboolean selection_handled = TRUE;
|
|
GList *iter;
|
|
GList *tracks = NULL;
|
|
|
|
if (!GST_ADAPTIVE_SCHEDULER_LOCK (demux))
|
|
return FALSE;
|
|
|
|
TRACKS_LOCK (demux);
|
|
/* We can't do stream selection if we are migrating between periods */
|
|
if (demux->input_period && demux->output_period != demux->input_period) {
|
|
GST_WARNING_OBJECT (demux,
|
|
"Stream selection while migrating between periods is not possible");
|
|
TRACKS_UNLOCK (demux);
|
|
return FALSE;
|
|
}
|
|
/* Validate the streams and fill:
|
|
* tracks : list of tracks corresponding to requested streams
|
|
*/
|
|
for (iter = streams; iter; iter = iter->next) {
|
|
gchar *stream_id = (gchar *) iter->data;
|
|
GstAdaptiveDemuxTrack *track;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Stream requested : %s", stream_id);
|
|
track = find_track_for_stream_id (demux->output_period, stream_id);
|
|
if (!track) {
|
|
GST_WARNING_OBJECT (demux, "Unrecognized stream_id '%s'", stream_id);
|
|
selection_handled = FALSE;
|
|
goto select_streams_done;
|
|
}
|
|
tracks = g_list_append (tracks, track);
|
|
GST_DEBUG_OBJECT (demux, "Track found, selected:%d", track->selected);
|
|
}
|
|
|
|
/* FIXME : ACTIVATING AND DEACTIVATING STREAMS SHOULD BE DONE FROM THE
|
|
* SCHEDULING THREAD */
|
|
|
|
/* FIXME: We want to iterate all streams, mark them as deselected,
|
|
* then iterate tracks and mark any streams that have at least 1
|
|
* active output track, then loop over all streams again and start/stop
|
|
* them as needed */
|
|
|
|
/* Go over all tracks present and (de)select based on current selection */
|
|
for (iter = demux->output_period->tracks; iter; iter = iter->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) iter->data;
|
|
|
|
if (track->selected && !g_list_find (tracks, track)) {
|
|
GST_DEBUG_OBJECT (demux, "De-select track '%s' (active:%d)",
|
|
track->stream_id, track->active);
|
|
track->selected = FALSE;
|
|
track->draining = TRUE;
|
|
} else if (!track->selected && g_list_find (tracks, track)) {
|
|
GST_DEBUG_OBJECT (demux, "Selecting track '%s'", track->stream_id);
|
|
|
|
track->selected = TRUE;
|
|
}
|
|
}
|
|
|
|
/* Start or stop streams based on the updated track selection */
|
|
for (iter = demux->output_period->streams; iter; iter = iter->next) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
GList *trackiter;
|
|
|
|
gboolean is_running = gst_adaptive_demux2_stream_is_running (stream);
|
|
gboolean should_be_running =
|
|
gst_adaptive_demux2_stream_is_selected_locked (stream);
|
|
|
|
if (!is_running && should_be_running) {
|
|
GstClockTime output_running_ts = demux->priv->global_output_position;
|
|
GstClockTime start_position;
|
|
|
|
/* Calculate where we should start the stream, and then
|
|
* start it. */
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_LOCK (demux);
|
|
|
|
GST_DEBUG_OBJECT (stream, "(Re)starting stream. Output running ts %"
|
|
GST_TIME_FORMAT " in demux segment %" GST_SEGMENT_FORMAT,
|
|
GST_TIME_ARGS (output_running_ts), &demux->segment);
|
|
|
|
start_position =
|
|
gst_segment_position_from_running_time (&demux->segment,
|
|
GST_FORMAT_TIME, output_running_ts);
|
|
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_UNLOCK (demux);
|
|
|
|
GST_DEBUG_OBJECT (demux, "Setting stream start position to %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (start_position));
|
|
|
|
stream->current_position = stream->start_position = start_position;
|
|
stream->compute_segment = TRUE;
|
|
|
|
/* If output has already begun, ensure we seek this segment
|
|
* to the correct restart position when the download loop begins */
|
|
if (output_running_ts != 0)
|
|
stream->state = GST_ADAPTIVE_DEMUX2_STREAM_STATE_RESTART;
|
|
|
|
/* Activate track pads for this stream */
|
|
for (trackiter = stream->tracks; trackiter; trackiter = trackiter->next) {
|
|
GstAdaptiveDemuxTrack *track =
|
|
(GstAdaptiveDemuxTrack *) trackiter->data;
|
|
gst_pad_set_active (track->sinkpad, TRUE);
|
|
}
|
|
|
|
gst_adaptive_demux2_stream_start (stream);
|
|
} else if (is_running && !should_be_running) {
|
|
/* Stream should not be running and needs stopping */
|
|
gst_adaptive_demux2_stream_stop (stream);
|
|
|
|
/* Set all track sinkpads to inactive for this stream */
|
|
for (trackiter = stream->tracks; trackiter; trackiter = trackiter->next) {
|
|
GstAdaptiveDemuxTrack *track =
|
|
(GstAdaptiveDemuxTrack *) trackiter->data;
|
|
gst_pad_set_active (track->sinkpad, FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
g_atomic_int_set (&demux->priv->requested_selection_seqnum, seqnum);
|
|
|
|
select_streams_done:
|
|
demux_update_buffering_locked (demux);
|
|
demux_post_buffering_locked (demux);
|
|
|
|
TRACKS_UNLOCK (demux);
|
|
GST_ADAPTIVE_SCHEDULER_UNLOCK (demux);
|
|
|
|
if (tracks)
|
|
g_list_free (tracks);
|
|
return selection_handled;
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_handle_select_streams_event (GstAdaptiveDemux * demux,
|
|
GstEvent * event)
|
|
{
|
|
GList *streams;
|
|
gboolean selection_handled;
|
|
|
|
if (GST_EVENT_SEQNUM (event) ==
|
|
g_atomic_int_get (&demux->priv->requested_selection_seqnum)) {
|
|
GST_DEBUG_OBJECT (demux, "Already handled/handling select-streams %d",
|
|
GST_EVENT_SEQNUM (event));
|
|
return TRUE;
|
|
}
|
|
|
|
gst_event_parse_select_streams (event, &streams);
|
|
selection_handled =
|
|
handle_stream_selection (demux, streams, GST_EVENT_SEQNUM (event));
|
|
g_list_free_full (streams, g_free);
|
|
|
|
gst_event_unref (event);
|
|
return selection_handled;
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_src_event (GstPad * pad, GstObject * parent,
|
|
GstEvent * event)
|
|
{
|
|
GstAdaptiveDemux *demux;
|
|
|
|
demux = GST_ADAPTIVE_DEMUX_CAST (parent);
|
|
|
|
switch (event->type) {
|
|
case GST_EVENT_SEEK:
|
|
{
|
|
guint32 seqnum = gst_event_get_seqnum (event);
|
|
if (seqnum == demux->priv->segment_seqnum) {
|
|
GST_LOG_OBJECT (pad,
|
|
"Drop duplicated SEEK event seqnum %" G_GUINT32_FORMAT, seqnum);
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
}
|
|
return gst_adaptive_demux_handle_seek_event (demux, event);
|
|
}
|
|
case GST_EVENT_LATENCY:{
|
|
/* Upstream and our internal source are irrelevant
|
|
* for latency, and we should not fail here to
|
|
* configure the latency */
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
}
|
|
case GST_EVENT_QOS:{
|
|
GstClockTimeDiff diff;
|
|
GstClockTime timestamp;
|
|
GstClockTime earliest_time;
|
|
|
|
gst_event_parse_qos (event, NULL, NULL, &diff, ×tamp);
|
|
/* Only take into account lateness if late */
|
|
if (diff > 0)
|
|
earliest_time = timestamp + 2 * diff;
|
|
else
|
|
earliest_time = timestamp;
|
|
|
|
GST_OBJECT_LOCK (demux);
|
|
if (!GST_CLOCK_TIME_IS_VALID (demux->priv->qos_earliest_time) ||
|
|
earliest_time > demux->priv->qos_earliest_time) {
|
|
demux->priv->qos_earliest_time = earliest_time;
|
|
GST_DEBUG_OBJECT (demux, "qos_earliest_time %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (demux->priv->qos_earliest_time));
|
|
}
|
|
GST_OBJECT_UNLOCK (demux);
|
|
break;
|
|
}
|
|
case GST_EVENT_SELECT_STREAMS:
|
|
{
|
|
return gst_adaptive_demux_handle_select_streams_event (demux, event);
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return gst_pad_event_default (pad, parent, event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_src_query (GstPad * pad, GstObject * parent,
|
|
GstQuery * query)
|
|
{
|
|
GstAdaptiveDemux *demux = GST_ADAPTIVE_DEMUX_CAST (parent);
|
|
gboolean ret = FALSE;
|
|
|
|
if (query == NULL)
|
|
return FALSE;
|
|
|
|
|
|
switch (query->type) {
|
|
case GST_QUERY_DURATION:{
|
|
GstFormat fmt;
|
|
GstClockTime duration = GST_CLOCK_TIME_NONE;
|
|
|
|
gst_query_parse_duration (query, &fmt, NULL);
|
|
|
|
if (gst_adaptive_demux_is_live (demux)) {
|
|
/* We are able to answer this query: the duration is unknown */
|
|
gst_query_set_duration (query, fmt, -1);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
|
|
if (fmt == GST_FORMAT_TIME
|
|
&& g_atomic_int_get (&demux->priv->have_manifest)) {
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
duration = demux->priv->duration;
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0) {
|
|
gst_query_set_duration (query, GST_FORMAT_TIME, duration);
|
|
ret = TRUE;
|
|
}
|
|
}
|
|
|
|
GST_LOG_OBJECT (demux, "GST_QUERY_DURATION returns %s with duration %"
|
|
GST_TIME_FORMAT, ret ? "TRUE" : "FALSE", GST_TIME_ARGS (duration));
|
|
break;
|
|
}
|
|
case GST_QUERY_LATENCY:{
|
|
gst_query_set_latency (query, FALSE, 0, -1);
|
|
ret = TRUE;
|
|
break;
|
|
}
|
|
case GST_QUERY_SEEKING:{
|
|
GstFormat fmt;
|
|
gint64 stop = -1;
|
|
gint64 start = 0;
|
|
|
|
if (!g_atomic_int_get (&demux->priv->have_manifest)) {
|
|
GST_INFO_OBJECT (demux,
|
|
"Don't have manifest yet, can't answer seeking query");
|
|
return FALSE; /* can't answer without manifest */
|
|
}
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
|
|
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
|
|
GST_INFO_OBJECT (demux, "Received GST_QUERY_SEEKING with format %d", fmt);
|
|
if (fmt == GST_FORMAT_TIME) {
|
|
GstClockTime duration;
|
|
gboolean can_seek = gst_adaptive_demux_can_seek (demux);
|
|
|
|
ret = TRUE;
|
|
if (can_seek) {
|
|
if (gst_adaptive_demux_is_live (demux)) {
|
|
ret = gst_adaptive_demux_get_live_seek_range (demux, &start, &stop);
|
|
|
|
if (!ret) {
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
GST_INFO_OBJECT (demux, "can't answer seeking query");
|
|
return FALSE;
|
|
}
|
|
} else {
|
|
duration = demux->priv->duration;
|
|
if (GST_CLOCK_TIME_IS_VALID (duration) && duration > 0)
|
|
stop = duration;
|
|
}
|
|
}
|
|
gst_query_set_seeking (query, fmt, can_seek, start, stop);
|
|
GST_INFO_OBJECT (demux, "GST_QUERY_SEEKING returning with start : %"
|
|
GST_TIME_FORMAT ", stop : %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
|
|
}
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
break;
|
|
}
|
|
case GST_QUERY_URI:
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
|
|
/* TODO HLS can answer this differently it seems */
|
|
if (demux->manifest_uri) {
|
|
/* FIXME: (hls) Do we answer with the variant playlist, with the current
|
|
* playlist or the the uri of the last downlowaded fragment? */
|
|
gst_query_set_uri (query, demux->manifest_uri);
|
|
ret = TRUE;
|
|
}
|
|
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
break;
|
|
case GST_QUERY_SELECTABLE:
|
|
gst_query_set_selectable (query, TRUE);
|
|
ret = TRUE;
|
|
break;
|
|
default:
|
|
/* Don't forward queries upstream because of the special nature of this
|
|
* "demuxer", which relies on the upstream element only to be fed
|
|
* the Manifest
|
|
*/
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_adaptive_demux_handle_lost_sync (GstAdaptiveDemux * demux)
|
|
{
|
|
GstEvent *seek;
|
|
|
|
GST_WARNING_OBJECT (demux, "Lost synchronization, seeking back to live head");
|
|
|
|
seek =
|
|
gst_event_new_seek (1.0, GST_FORMAT_TIME,
|
|
GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT, GST_SEEK_TYPE_END, 0,
|
|
GST_SEEK_TYPE_NONE, 0);
|
|
gst_adaptive_demux_handle_seek_event (demux, seek);
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/* Called when the scheduler starts, to kick off manifest updates
|
|
* and stream downloads */
|
|
static gboolean
|
|
gst_adaptive_demux_scheduler_start_cb (GstAdaptiveDemux * demux)
|
|
{
|
|
GList *iter;
|
|
|
|
GST_INFO_OBJECT (demux, "Starting streams' tasks");
|
|
|
|
iter = demux->input_period->streams;
|
|
|
|
for (; iter; iter = g_list_next (iter)) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
|
|
/* If we need to process this stream to discover tracks *OR* it has any
|
|
* tracks which are selected, start it now */
|
|
if ((stream->pending_tracks == TRUE)
|
|
|| gst_adaptive_demux2_stream_is_selected_locked (stream))
|
|
gst_adaptive_demux2_stream_start (stream);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* must be called with the scheduler lock */
|
|
static void
|
|
gst_adaptive_demux_start_tasks (GstAdaptiveDemux * demux)
|
|
{
|
|
if (!gst_adaptive_demux2_is_running (demux)) {
|
|
GST_DEBUG_OBJECT (demux, "Not starting tasks due to shutdown");
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "Starting the SCHEDULER task");
|
|
gst_adaptive_demux_loop_call (demux->priv->scheduler_task,
|
|
(GSourceFunc) gst_adaptive_demux_scheduler_start_cb, demux, NULL);
|
|
|
|
TRACKS_LOCK (demux);
|
|
demux->priv->flushing = FALSE;
|
|
GST_DEBUG_OBJECT (demux, "Starting the output task");
|
|
gst_task_start (demux->priv->output_task);
|
|
TRACKS_UNLOCK (demux);
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
static void
|
|
gst_adaptive_demux_stop_manifest_update_task (GstAdaptiveDemux * demux)
|
|
{
|
|
GST_DEBUG_OBJECT (demux, "requesting stop of the manifest update task");
|
|
demux->priv->manifest_updates_enabled = FALSE;
|
|
if (demux->priv->manifest_updates_cb != 0) {
|
|
gst_adaptive_demux_loop_cancel_call (demux->priv->scheduler_task,
|
|
demux->priv->manifest_updates_cb);
|
|
demux->priv->manifest_updates_cb = 0;
|
|
}
|
|
}
|
|
|
|
static gboolean gst_adaptive_demux_updates_start_cb (GstAdaptiveDemux * demux);
|
|
|
|
/* must be called with manifest_lock taken */
|
|
static void
|
|
gst_adaptive_demux_start_manifest_update_task (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *demux_class = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
demux->priv->manifest_updates_enabled = TRUE;
|
|
|
|
if (demux->priv->need_manual_manifest_update) {
|
|
gst_adaptive_demux2_manual_manifest_update (demux);
|
|
demux->priv->need_manual_manifest_update = FALSE;
|
|
}
|
|
|
|
if (gst_adaptive_demux_is_live (demux)) {
|
|
/* Task to periodically update the manifest */
|
|
if (demux_class->requires_periodical_playlist_update (demux)) {
|
|
GST_DEBUG_OBJECT (demux, "requesting start of the manifest update task");
|
|
if (demux->priv->manifest_updates_cb == 0) {
|
|
demux->priv->manifest_updates_cb =
|
|
gst_adaptive_demux_loop_call (demux->priv->scheduler_task,
|
|
(GSourceFunc) gst_adaptive_demux_updates_start_cb, demux, NULL);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* must be called with manifest_lock taken
|
|
* This function will temporarily release manifest_lock in order to join the
|
|
* download threads.
|
|
* The api_lock will still protect it against other threads trying to modify
|
|
* the demux element.
|
|
*/
|
|
static void
|
|
gst_adaptive_demux_stop_tasks (GstAdaptiveDemux * demux, gboolean stop_updates)
|
|
{
|
|
GST_LOG_OBJECT (demux, "Stopping tasks");
|
|
|
|
if (stop_updates)
|
|
gst_adaptive_demux_stop_manifest_update_task (demux);
|
|
|
|
TRACKS_LOCK (demux);
|
|
if (demux->input_period)
|
|
gst_adaptive_demux_period_stop_tasks (demux->input_period);
|
|
|
|
demux->priv->flushing = TRUE;
|
|
g_cond_signal (&demux->priv->tracks_add);
|
|
gst_task_stop (demux->priv->output_task);
|
|
TRACKS_UNLOCK (demux);
|
|
|
|
gst_task_join (demux->priv->output_task);
|
|
|
|
demux->priv->qos_earliest_time = GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
static gboolean
|
|
gst_adaptive_demux_push_src_event (GstAdaptiveDemux * demux, GstEvent * event)
|
|
{
|
|
GList *iter;
|
|
gboolean ret = TRUE;
|
|
|
|
GST_DEBUG_OBJECT (demux, "event %" GST_PTR_FORMAT, event);
|
|
|
|
TRACKS_LOCK (demux);
|
|
for (iter = demux->priv->outputs; iter; iter = g_list_next (iter)) {
|
|
OutputSlot *slot = (OutputSlot *) iter->data;
|
|
gst_event_ref (event);
|
|
GST_DEBUG_OBJECT (slot->pad, "Pushing event");
|
|
ret = ret & gst_pad_push_event (slot->pad, event);
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_FLUSH_STOP)
|
|
slot->pushed_timed_data = FALSE;
|
|
}
|
|
TRACKS_UNLOCK (demux);
|
|
gst_event_unref (event);
|
|
return ret;
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
void
|
|
gst_adaptive_demux2_stream_set_caps (GstAdaptiveDemux2Stream * stream,
|
|
GstCaps * caps)
|
|
{
|
|
GST_DEBUG_OBJECT (stream,
|
|
"setting new caps for stream %" GST_PTR_FORMAT, caps);
|
|
gst_caps_replace (&stream->pending_caps, caps);
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
/* @tags: transfer full */
|
|
void
|
|
gst_adaptive_demux2_stream_set_tags (GstAdaptiveDemux2Stream * stream,
|
|
GstTagList * tags)
|
|
{
|
|
GST_DEBUG_OBJECT (stream,
|
|
"setting new tags for stream %" GST_PTR_FORMAT, tags);
|
|
gst_clear_tag_list (&stream->pending_tags);
|
|
stream->pending_tags = tags;
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
void
|
|
gst_adaptive_demux2_stream_queue_event (GstAdaptiveDemux2Stream * stream,
|
|
GstEvent * event)
|
|
{
|
|
stream->pending_events = g_list_append (stream->pending_events, event);
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_requires_periodical_playlist_update_default (GstAdaptiveDemux
|
|
* demux)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
/* Called when a stream needs waking after the manifest is updated */
|
|
void
|
|
gst_adaptive_demux2_stream_wants_manifest_update (GstAdaptiveDemux * demux)
|
|
{
|
|
demux->priv->stream_waiting_for_manifest = TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_manifest_update_cb (GstAdaptiveDemux * demux)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
gboolean schedule_again = TRUE;
|
|
|
|
GST_MANIFEST_LOCK (demux);
|
|
demux->priv->manifest_updates_cb = 0;
|
|
|
|
/* Updating playlist only needed for live playlists */
|
|
if (!gst_adaptive_demux_is_live (demux)) {
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "Updating playlist");
|
|
ret = gst_adaptive_demux_update_manifest (demux);
|
|
|
|
if (ret == GST_FLOW_EOS) {
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
if (ret == GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (demux, "Updated playlist successfully");
|
|
demux->priv->update_failed_count = 0;
|
|
|
|
/* Wake up download tasks */
|
|
if (demux->priv->stream_waiting_for_manifest) {
|
|
GList *iter;
|
|
|
|
for (iter = demux->input_period->streams; iter; iter = g_list_next (iter)) {
|
|
GstAdaptiveDemux2Stream *stream = iter->data;
|
|
gst_adaptive_demux2_stream_on_manifest_update (stream);
|
|
}
|
|
demux->priv->stream_waiting_for_manifest = FALSE;
|
|
}
|
|
} else if (ret == GST_ADAPTIVE_DEMUX_FLOW_LOST_SYNC) {
|
|
schedule_again = FALSE;
|
|
gst_adaptive_demux_handle_lost_sync (demux);
|
|
} else if (ret == GST_ADAPTIVE_DEMUX_FLOW_BUSY) {
|
|
/* This is not an error, we'll just try again later */
|
|
GST_LOG_OBJECT (demux, "Manifest update returned BUSY / ongoing");
|
|
} else {
|
|
demux->priv->update_failed_count++;
|
|
|
|
if (demux->priv->update_failed_count <= DEFAULT_FAILED_COUNT) {
|
|
GST_WARNING_OBJECT (demux, "Could not update the playlist, flow: %s",
|
|
gst_flow_get_name (ret));
|
|
} else {
|
|
GST_ELEMENT_ERROR (demux, STREAM, FAILED,
|
|
(_("Internal data stream error.")), ("Could not update playlist"));
|
|
GST_DEBUG_OBJECT (demux, "Stopped manifest updates because of error");
|
|
schedule_again = FALSE;
|
|
}
|
|
}
|
|
|
|
if (schedule_again) {
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
|
|
demux->priv->manifest_updates_cb =
|
|
gst_adaptive_demux_loop_call_delayed (demux->priv->scheduler_task,
|
|
klass->get_manifest_update_interval (demux) * GST_USECOND,
|
|
(GSourceFunc) gst_adaptive_demux_manifest_update_cb, demux, NULL);
|
|
}
|
|
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux_updates_start_cb (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
|
|
/* Loop for updating of the playlist. This periodically checks if
|
|
* the playlist is updated and does so, then signals the streaming
|
|
* thread in case it can continue downloading now. */
|
|
|
|
/* block until the next scheduled update or the signal to quit this thread */
|
|
GST_DEBUG_OBJECT (demux, "Started updates task");
|
|
demux->priv->manifest_updates_cb =
|
|
gst_adaptive_demux_loop_call_delayed (demux->priv->scheduler_task,
|
|
klass->get_manifest_update_interval (demux) * GST_USECOND,
|
|
(GSourceFunc) gst_adaptive_demux_manifest_update_cb, demux, NULL);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
static OutputSlot *
|
|
find_replacement_slot_for_track (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemuxTrack * track)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = demux->priv->outputs; tmp; tmp = tmp->next) {
|
|
OutputSlot *slot = (OutputSlot *) tmp->data;
|
|
/* Incompatible output type */
|
|
if (slot->type != track->type)
|
|
continue;
|
|
|
|
/* Slot which is already assigned to this pending track */
|
|
if (slot->pending_track == track)
|
|
return slot;
|
|
|
|
/* slot already used for another pending track */
|
|
if (slot->pending_track != NULL)
|
|
continue;
|
|
|
|
/* Current output track is of the same type and is draining */
|
|
if (slot->track && slot->track->draining)
|
|
return slot;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* TRACKS_LOCK taken */
|
|
static OutputSlot *
|
|
find_slot_for_track (GstAdaptiveDemux * demux, GstAdaptiveDemuxTrack * track)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = demux->priv->outputs; tmp; tmp = tmp->next) {
|
|
OutputSlot *slot = (OutputSlot *) tmp->data;
|
|
|
|
if (slot->track == track)
|
|
return slot;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* TRACKS_LOCK held */
|
|
static GstMessage *
|
|
all_selected_tracks_are_active (GstAdaptiveDemux * demux, guint32 seqnum)
|
|
{
|
|
GList *tmp;
|
|
GstMessage *msg;
|
|
|
|
for (tmp = demux->output_period->tracks; tmp; tmp = tmp->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) tmp->data;
|
|
|
|
if (track->selected && !track->active)
|
|
return NULL;
|
|
}
|
|
|
|
/* All selected tracks are active, created message */
|
|
msg =
|
|
gst_message_new_streams_selected (GST_OBJECT (demux),
|
|
demux->output_period->collection);
|
|
GST_MESSAGE_SEQNUM (msg) = seqnum;
|
|
for (tmp = demux->output_period->tracks; tmp; tmp = tmp->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) tmp->data;
|
|
if (track->active) {
|
|
gst_message_streams_selected_add (msg, track->stream_object);
|
|
}
|
|
}
|
|
|
|
return msg;
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_send_initial_events (GstAdaptiveDemux * demux,
|
|
OutputSlot * slot)
|
|
{
|
|
GstAdaptiveDemuxTrack *track = slot->track;
|
|
GstEvent *event;
|
|
|
|
/* Send EVENT_STREAM_START */
|
|
event = gst_event_new_stream_start (track->stream_id);
|
|
if (demux->have_group_id)
|
|
gst_event_set_group_id (event, demux->group_id);
|
|
gst_event_set_stream_flags (event, track->flags);
|
|
gst_event_set_stream (event, track->stream_object);
|
|
GST_DEBUG_OBJECT (demux, "Sending stream-start for track '%s'",
|
|
track->stream_id);
|
|
gst_pad_push_event (slot->pad, event);
|
|
|
|
/* Send EVENT_STREAM_COLLECTION */
|
|
event = gst_event_new_stream_collection (demux->output_period->collection);
|
|
GST_DEBUG_OBJECT (demux, "Sending stream-collection for track '%s'",
|
|
track->stream_id);
|
|
gst_pad_push_event (slot->pad, event);
|
|
|
|
/* Mark all sticky events for re-sending */
|
|
gst_event_store_mark_all_undelivered (&track->sticky_events);
|
|
}
|
|
|
|
/*
|
|
* Called with TRACKS_LOCK taken
|
|
*/
|
|
static void
|
|
check_and_handle_selection_update_locked (GstAdaptiveDemux * demux)
|
|
{
|
|
GList *tmp;
|
|
guint requested_selection_seqnum;
|
|
GstMessage *msg;
|
|
|
|
/* If requested_selection_seqnum != current_selection_seqnum, re-check all
|
|
output slots vs active/draining tracks */
|
|
requested_selection_seqnum =
|
|
g_atomic_int_get (&demux->priv->requested_selection_seqnum);
|
|
|
|
if (requested_selection_seqnum == demux->priv->current_selection_seqnum)
|
|
return;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Selection changed, re-checking all output slots");
|
|
|
|
/* Go over all slots, and if they have a pending track that's no longer
|
|
* selected, clear it so the slot can be reused */
|
|
for (tmp = demux->priv->outputs; tmp; tmp = tmp->next) {
|
|
OutputSlot *slot = (OutputSlot *) tmp->data;
|
|
|
|
if (slot->pending_track != NULL && !slot->pending_track->selected) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Removing deselected track '%s' as pending from output of current track '%s'",
|
|
slot->pending_track->id, slot->track->id);
|
|
gst_adaptive_demux_track_unref (slot->pending_track);
|
|
slot->pending_track = NULL;
|
|
}
|
|
}
|
|
|
|
/* Go over all tracks and create/re-assign/remove slots */
|
|
for (tmp = demux->output_period->tracks; tmp; tmp = tmp->next) {
|
|
GstAdaptiveDemuxTrack *track = (GstAdaptiveDemuxTrack *) tmp->data;
|
|
|
|
if (track->selected) {
|
|
OutputSlot *slot = find_slot_for_track (demux, track);
|
|
|
|
/* 0. Track is selected and has a slot. Nothing to do */
|
|
if (slot) {
|
|
GST_DEBUG_OBJECT (demux, "Track '%s' is already being outputted",
|
|
track->id);
|
|
continue;
|
|
}
|
|
|
|
slot = find_replacement_slot_for_track (demux, track);
|
|
if (slot) {
|
|
/* 1. There is an existing slot of the same type which is currently
|
|
* draining, assign this track as a replacement for it */
|
|
g_assert (slot->pending_track == NULL || slot->pending_track == track);
|
|
if (slot->pending_track == NULL) {
|
|
slot->pending_track = gst_adaptive_demux_track_ref (track);
|
|
GST_DEBUG_ID (track->id,
|
|
"Track will be used on output of track '%s' (period %u)",
|
|
slot->track->id, slot->track->period_num);
|
|
}
|
|
} else {
|
|
/* 2. There is no compatible replacement slot, create a new one */
|
|
slot = gst_adaptive_demux_output_slot_new (demux, track->type);
|
|
GST_DEBUG_OBJECT (demux, "Created slot for track '%s'", track->id);
|
|
demux->priv->outputs = g_list_append (demux->priv->outputs, slot);
|
|
|
|
track->update_next_segment = TRUE;
|
|
|
|
slot->track = gst_adaptive_demux_track_ref (track);
|
|
track->active = TRUE;
|
|
gst_adaptive_demux_send_initial_events (demux, slot);
|
|
}
|
|
|
|
/* If we were draining this track, we no longer are */
|
|
track->draining = FALSE;
|
|
}
|
|
}
|
|
|
|
/* Finally check all slots have a current/pending track. If not remove it */
|
|
for (tmp = demux->priv->outputs; tmp;) {
|
|
OutputSlot *slot = (OutputSlot *) tmp->data;
|
|
/* We should never has slots without target tracks */
|
|
g_assert (slot->track);
|
|
if (slot->track->draining && !slot->pending_track) {
|
|
GstAdaptiveDemux2Stream *stream;
|
|
|
|
GST_DEBUG_OBJECT (demux, "Output for track '%s' is no longer used",
|
|
slot->track->id);
|
|
slot->track->active = FALSE;
|
|
|
|
/* If the stream feeding this track is stopped, flush and clear
|
|
* the track now that it's going inactive. If the stream was not
|
|
* found, it means we advanced past that period already (and the
|
|
* stream was stopped and discarded) */
|
|
stream = find_stream_for_track_locked (demux, slot->track);
|
|
if (stream != NULL && !gst_adaptive_demux2_stream_is_running (stream))
|
|
gst_adaptive_demux_track_flush (slot->track);
|
|
|
|
tmp = demux->priv->outputs = g_list_remove (demux->priv->outputs, slot);
|
|
gst_adaptive_demux_output_slot_free (demux, slot);
|
|
} else
|
|
tmp = tmp->next;
|
|
}
|
|
|
|
demux->priv->current_selection_seqnum = requested_selection_seqnum;
|
|
msg = all_selected_tracks_are_active (demux, requested_selection_seqnum);
|
|
if (msg) {
|
|
TRACKS_UNLOCK (demux);
|
|
GST_DEBUG_OBJECT (demux, "Posting streams-selected");
|
|
gst_element_post_message (GST_ELEMENT_CAST (demux), msg);
|
|
TRACKS_LOCK (demux);
|
|
}
|
|
}
|
|
|
|
/* TRACKS_LOCK held */
|
|
static gboolean
|
|
gst_adaptive_demux_advance_output_period (GstAdaptiveDemux * demux)
|
|
{
|
|
GList *iter;
|
|
GstAdaptiveDemuxPeriod *previous_period;
|
|
GstStreamCollection *collection;
|
|
|
|
/* Grab the next period, should be demux->periods->next->data */
|
|
previous_period = g_queue_pop_head (demux->priv->periods);
|
|
|
|
/* Remove ref held by demux->output_period */
|
|
gst_adaptive_demux_period_unref (previous_period);
|
|
demux->output_period =
|
|
gst_adaptive_demux_period_ref (g_queue_peek_head (demux->priv->periods));
|
|
|
|
GST_DEBUG_OBJECT (demux, "Moved output to period %d",
|
|
demux->output_period->period_num);
|
|
|
|
/* We can now post the collection of the new period */
|
|
collection = demux->output_period->collection;
|
|
TRACKS_UNLOCK (demux);
|
|
gst_element_post_message (GST_ELEMENT_CAST (demux),
|
|
gst_message_new_stream_collection (GST_OBJECT (demux), collection));
|
|
TRACKS_LOCK (demux);
|
|
|
|
/* Unselect all tracks of the previous period */
|
|
for (iter = previous_period->tracks; iter; iter = iter->next) {
|
|
GstAdaptiveDemuxTrack *track = iter->data;
|
|
if (track->selected) {
|
|
track->selected = FALSE;
|
|
track->draining = TRUE;
|
|
}
|
|
}
|
|
|
|
/* Force a selection re-check */
|
|
g_atomic_int_inc (&demux->priv->requested_selection_seqnum);
|
|
check_and_handle_selection_update_locked (demux);
|
|
|
|
/* Remove the final ref on the previous period now that we have done the switch */
|
|
gst_adaptive_demux_period_unref (previous_period);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Called with TRACKS_LOCK taken */
|
|
static void
|
|
handle_slot_pending_track_switch_locked (GstAdaptiveDemux * demux,
|
|
OutputSlot * slot)
|
|
{
|
|
GstAdaptiveDemuxTrack *track = slot->track;
|
|
GstMessage *msg;
|
|
gboolean pending_is_ready;
|
|
GstAdaptiveDemux2Stream *stream;
|
|
|
|
/* If we have a pending track for this slot, the current track should be
|
|
* draining and no longer selected */
|
|
g_assert (track->draining && !track->selected);
|
|
|
|
/* If we're draining, check if the pending track has enough data *or* that
|
|
we've already drained out entirely */
|
|
pending_is_ready =
|
|
(slot->pending_track->level_time >=
|
|
slot->pending_track->buffering_threshold);
|
|
pending_is_ready |= slot->pending_track->eos;
|
|
|
|
if (!pending_is_ready && gst_queue_array_get_length (track->queue) > 0) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Replacement track '%s' doesn't have enough data for switching yet",
|
|
slot->pending_track->id);
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Pending replacement track has enough data, switching");
|
|
track->active = FALSE;
|
|
track->draining = FALSE;
|
|
|
|
/* If the stream feeding this track is stopped, flush and clear
|
|
* the track now that it's going inactive. If the stream was not
|
|
* found, it means we advanced past that period already (and the
|
|
* stream was stopped and discarded) */
|
|
stream = find_stream_for_track_locked (demux, track);
|
|
if (stream != NULL && !gst_adaptive_demux2_stream_is_running (stream))
|
|
gst_adaptive_demux_track_flush (track);
|
|
|
|
gst_adaptive_demux_track_unref (track);
|
|
/* We steal the reference of pending_track */
|
|
track = slot->track = slot->pending_track;
|
|
slot->pending_track = NULL;
|
|
slot->track->active = TRUE;
|
|
|
|
/* Make sure the track segment will start at the current position */
|
|
track->update_next_segment = TRUE;
|
|
|
|
/* Send stream start and collection, and schedule sticky events */
|
|
gst_adaptive_demux_send_initial_events (demux, slot);
|
|
|
|
/* Can we emit the streams-selected message now ? */
|
|
msg =
|
|
all_selected_tracks_are_active (demux,
|
|
g_atomic_int_get (&demux->priv->requested_selection_seqnum));
|
|
if (msg) {
|
|
TRACKS_UNLOCK (demux);
|
|
GST_DEBUG_OBJECT (demux, "Posting streams-selected");
|
|
gst_element_post_message (GST_ELEMENT_CAST (demux), msg);
|
|
TRACKS_LOCK (demux);
|
|
}
|
|
|
|
}
|
|
|
|
static void
|
|
gst_adaptive_demux_output_loop (GstAdaptiveDemux * demux)
|
|
{
|
|
GList *tmp;
|
|
GstClockTimeDiff global_output_position = GST_CLOCK_STIME_NONE;
|
|
gboolean wait_for_data = FALSE;
|
|
gboolean all_tracks_empty;
|
|
GstFlowReturn ret;
|
|
|
|
GST_DEBUG_OBJECT (demux, "enter");
|
|
|
|
TRACKS_LOCK (demux);
|
|
|
|
/* Check if stopping */
|
|
if (demux->priv->flushing) {
|
|
ret = GST_FLOW_FLUSHING;
|
|
goto pause;
|
|
}
|
|
|
|
/* If the selection changed, handle it */
|
|
check_and_handle_selection_update_locked (demux);
|
|
|
|
restart:
|
|
ret = GST_FLOW_OK;
|
|
global_output_position = GST_CLOCK_STIME_NONE;
|
|
all_tracks_empty = TRUE;
|
|
|
|
if (wait_for_data) {
|
|
GST_DEBUG_OBJECT (demux, "Waiting for data");
|
|
g_cond_wait (&demux->priv->tracks_add, &demux->priv->tracks_lock);
|
|
GST_DEBUG_OBJECT (demux, "Done waiting for data");
|
|
if (demux->priv->flushing) {
|
|
ret = GST_FLOW_FLUSHING;
|
|
goto pause;
|
|
}
|
|
wait_for_data = FALSE;
|
|
}
|
|
|
|
/* Grab/Recalculate current global output position
|
|
* This is the minimum pending output position of all tracks used for output
|
|
*
|
|
* If there is a track which is empty and not EOS, wait for it to receive data
|
|
* then recalculate global output position.
|
|
*
|
|
* This also pushes downstream all non-timed data that might be present.
|
|
*
|
|
* IF all tracks are EOS : stop task
|
|
*/
|
|
GST_LOG_OBJECT (demux, "Calculating global output position of output slots");
|
|
for (tmp = demux->priv->outputs; tmp; tmp = tmp->next) {
|
|
OutputSlot *slot = (OutputSlot *) tmp->data;
|
|
GstAdaptiveDemuxTrack *track;
|
|
|
|
/* If there is a pending track, Check if it's time to switch to it */
|
|
if (slot->pending_track)
|
|
handle_slot_pending_track_switch_locked (demux, slot);
|
|
|
|
track = slot->track;
|
|
|
|
if (!track->active) {
|
|
/* Note: Edward: I can't see in what cases we would end up with inactive
|
|
tracks assigned to slots. */
|
|
GST_ERROR_OBJECT (demux, "FIXME : Handle track switching");
|
|
g_assert (track->active);
|
|
continue;
|
|
}
|
|
|
|
if (track->next_position == GST_CLOCK_STIME_NONE) {
|
|
gst_adaptive_demux_track_update_next_position (track);
|
|
}
|
|
|
|
GST_TRACE_ID (track->id,
|
|
"Looking at track, next_position %" GST_STIME_FORMAT,
|
|
GST_STIME_ARGS (track->next_position));
|
|
|
|
if (track->next_position != GST_CLOCK_STIME_NONE) {
|
|
if (global_output_position == GST_CLOCK_STIME_NONE)
|
|
global_output_position = track->next_position;
|
|
else
|
|
global_output_position =
|
|
MIN (global_output_position, track->next_position);
|
|
track->waiting_add = FALSE;
|
|
all_tracks_empty = FALSE;
|
|
} else if (!track->eos) {
|
|
GST_DEBUG_ID (track->id, "Need timed data");
|
|
all_tracks_empty = FALSE;
|
|
wait_for_data = track->waiting_add = TRUE;
|
|
} else {
|
|
GST_DEBUG_ID (track->id, "Track is EOS, not waiting for timed data");
|
|
|
|
if (gst_queue_array_get_length (track->queue) > 0) {
|
|
all_tracks_empty = FALSE;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (wait_for_data)
|
|
goto restart;
|
|
|
|
if (all_tracks_empty && demux->output_period->has_next_period) {
|
|
GST_DEBUG_OBJECT (demux, "Period %d is drained, switching to next period",
|
|
demux->output_period->period_num);
|
|
if (!gst_adaptive_demux_advance_output_period (demux)) {
|
|
/* Failed to move to next period, error out */
|
|
ret = GST_FLOW_ERROR;
|
|
goto pause;
|
|
}
|
|
/* Restart the loop */
|
|
goto restart;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (demux, "Outputting data for position %" GST_STIME_FORMAT,
|
|
GST_STIME_ARGS (global_output_position));
|
|
|
|
/* For each track:
|
|
*
|
|
* We know all active tracks have pending timed data
|
|
* * while track next_position <= global output position
|
|
* * push pending data
|
|
* * Update track next_position
|
|
* * recalculate global output position
|
|
* * Pop next pending data from track and update pending position
|
|
*
|
|
*/
|
|
gboolean need_restart = FALSE;
|
|
|
|
for (tmp = demux->priv->outputs; tmp; tmp = tmp->next) {
|
|
OutputSlot *slot = (OutputSlot *) tmp->data;
|
|
GstAdaptiveDemuxTrack *track = slot->track;
|
|
|
|
GST_LOG_OBJECT (track->element,
|
|
"active:%d draining:%d selected:%d next_position:%" GST_STIME_FORMAT
|
|
" global_output_position:%" GST_STIME_FORMAT, track->active,
|
|
track->draining, track->selected, GST_STIME_ARGS (track->next_position),
|
|
GST_STIME_ARGS (global_output_position));
|
|
|
|
if (!track->active)
|
|
continue;
|
|
|
|
while (global_output_position == GST_CLOCK_STIME_NONE
|
|
|| !slot->pushed_timed_data
|
|
|| ((track->next_position != GST_CLOCK_STIME_NONE)
|
|
&& track->next_position <= global_output_position)
|
|
|| ((track->next_position == GST_CLOCK_STIME_NONE) && track->eos)) {
|
|
GstMiniObject *mo =
|
|
gst_adaptive_demux_track_dequeue_data_locked (demux, track, TRUE);
|
|
|
|
if (!mo) {
|
|
GST_DEBUG_ID (track->id,
|
|
"Track doesn't have any pending data (eos:%d pushed_timed_data:%d)",
|
|
track->eos, slot->pushed_timed_data);
|
|
/* This should only happen if the track is EOS, or exactly in between
|
|
* the parser outputting segment/caps before buffers. */
|
|
g_assert (track->eos || !slot->pushed_timed_data);
|
|
|
|
/* If we drained the track, but there's a pending track on the slot
|
|
* loop again to activate it */
|
|
if (slot->pending_track) {
|
|
GST_DEBUG_ID (track->id,
|
|
"Track drained, but has a pending track to activate");
|
|
goto restart;
|
|
}
|
|
break;
|
|
}
|
|
|
|
demux_update_buffering_locked (demux);
|
|
demux_post_buffering_locked (demux);
|
|
TRACKS_UNLOCK (demux);
|
|
|
|
GST_DEBUG_ID (track->id, "Track dequeued %" GST_PTR_FORMAT, mo);
|
|
|
|
if (GST_IS_EVENT (mo)) {
|
|
GstEvent *event = (GstEvent *) mo;
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_GAP) {
|
|
slot->pushed_timed_data = TRUE;
|
|
} else if (GST_EVENT_TYPE (event) == GST_EVENT_EOS) {
|
|
/* If there is a pending next period, don't send the EOS */
|
|
if (demux->output_period->has_next_period) {
|
|
GST_LOG_OBJECT (track->id, "Dropping EOS before next period");
|
|
gst_event_store_mark_delivered (&track->sticky_events, event);
|
|
gst_event_unref (event);
|
|
event = NULL;
|
|
/* We'll need to re-check if all tracks are empty again above */
|
|
need_restart = TRUE;
|
|
}
|
|
}
|
|
|
|
if (event != NULL) {
|
|
gst_pad_push_event (slot->pad, gst_event_ref (event));
|
|
|
|
if (GST_EVENT_IS_STICKY (event))
|
|
gst_event_store_mark_delivered (&track->sticky_events, event);
|
|
gst_event_unref (event);
|
|
}
|
|
} else if (GST_IS_BUFFER (mo)) {
|
|
GstBuffer *buffer = (GstBuffer *) mo;
|
|
|
|
if (track->output_discont) {
|
|
if (!GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
|
|
buffer = gst_buffer_make_writable (buffer);
|
|
GST_DEBUG_OBJECT (slot->pad,
|
|
"track %s marking discont %" GST_PTR_FORMAT, track->id, buffer);
|
|
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
|
|
}
|
|
track->output_discont = FALSE;
|
|
}
|
|
slot->flow_ret = gst_pad_push (slot->pad, buffer);
|
|
ret =
|
|
gst_flow_combiner_update_pad_flow (demux->priv->flowcombiner,
|
|
slot->pad, slot->flow_ret);
|
|
GST_DEBUG_OBJECT (slot->pad,
|
|
"track %s push returned %s (combined %s)",
|
|
track->id,
|
|
gst_flow_get_name (slot->flow_ret), gst_flow_get_name (ret));
|
|
slot->pushed_timed_data = TRUE;
|
|
} else {
|
|
GST_ERROR ("Unhandled miniobject %" GST_PTR_FORMAT, mo);
|
|
}
|
|
|
|
TRACKS_LOCK (demux);
|
|
gst_adaptive_demux_track_update_next_position (track);
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
goto pause;
|
|
}
|
|
}
|
|
|
|
/* Store global output position */
|
|
if (global_output_position >= 0) {
|
|
demux->priv->global_output_position = global_output_position;
|
|
|
|
/* And see if any streams need to be woken for more input */
|
|
gst_adaptive_demux_period_check_input_wakeup_locked (demux->input_period,
|
|
global_output_position);
|
|
}
|
|
|
|
if (need_restart)
|
|
goto restart;
|
|
|
|
if (global_output_position == GST_CLOCK_STIME_NONE) {
|
|
if (!demux->priv->flushing) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Pausing output task after reaching NONE global_output_position");
|
|
gst_task_pause (demux->priv->output_task);
|
|
}
|
|
}
|
|
|
|
TRACKS_UNLOCK (demux);
|
|
GST_DEBUG_OBJECT (demux, "leave");
|
|
return;
|
|
|
|
pause:
|
|
{
|
|
GST_DEBUG_OBJECT (demux, "Pausing due to %s", gst_flow_get_name (ret));
|
|
/* If the flushing flag is set, then the task is being
|
|
* externally stopped, so don't go to pause(), otherwise we
|
|
* should so we don't keep spinning */
|
|
if (!demux->priv->flushing) {
|
|
GST_DEBUG_OBJECT (demux, "Pausing task due to %s",
|
|
gst_flow_get_name (ret));
|
|
gst_task_pause (demux->priv->output_task);
|
|
}
|
|
|
|
TRACKS_UNLOCK (demux);
|
|
|
|
if (ret == GST_FLOW_NOT_LINKED || ret <= GST_FLOW_EOS) {
|
|
GstEvent *eos = gst_event_new_eos ();
|
|
|
|
if (ret != GST_FLOW_EOS) {
|
|
GST_ELEMENT_FLOW_ERROR (demux, ret);
|
|
}
|
|
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_LOCK (demux);
|
|
if (demux->priv->segment_seqnum != GST_SEQNUM_INVALID)
|
|
gst_event_set_seqnum (eos, demux->priv->segment_seqnum);
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_UNLOCK (demux);
|
|
|
|
gst_adaptive_demux_push_src_event (demux, eos);
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* must be called from the scheduler */
|
|
gboolean
|
|
gst_adaptive_demux_is_live (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
|
|
if (klass->is_live)
|
|
return klass->is_live (demux);
|
|
return FALSE;
|
|
}
|
|
|
|
const gchar *
|
|
gst_adaptive_demux_get_manifest_ref_uri (GstAdaptiveDemux * d)
|
|
{
|
|
return d->manifest_base_uri ? d->manifest_base_uri : d->manifest_uri;
|
|
}
|
|
|
|
static void
|
|
handle_manifest_download_complete (DownloadRequest * request,
|
|
DownloadRequestState state, GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
GstBuffer *buffer;
|
|
GstFlowReturn result;
|
|
|
|
g_free (demux->manifest_base_uri);
|
|
g_free (demux->manifest_uri);
|
|
|
|
if (request->redirect_permanent && request->redirect_uri) {
|
|
demux->manifest_uri = g_strdup (request->redirect_uri);
|
|
demux->manifest_base_uri = NULL;
|
|
} else {
|
|
demux->manifest_uri = g_strdup (request->uri);
|
|
demux->manifest_base_uri = g_strdup (request->redirect_uri);
|
|
}
|
|
|
|
buffer = download_request_take_buffer (request);
|
|
|
|
/* We should always have a buffer since this function is the non-error
|
|
* callback for the download */
|
|
g_assert (buffer);
|
|
|
|
result = klass->update_manifest_data (demux, buffer);
|
|
gst_buffer_unref (buffer);
|
|
|
|
/* FIXME: Should the manifest uri vars be reverted to original
|
|
* values if updating fails? */
|
|
|
|
if (result == GST_FLOW_OK) {
|
|
GstClockTime duration;
|
|
/* Send an updated duration message */
|
|
duration = klass->get_duration (demux);
|
|
if (duration != GST_CLOCK_TIME_NONE) {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Sending duration message : %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (duration));
|
|
gst_element_post_message (GST_ELEMENT (demux),
|
|
gst_message_new_duration_changed (GST_OBJECT (demux)));
|
|
} else {
|
|
GST_DEBUG_OBJECT (demux,
|
|
"Duration unknown, can not send the duration message");
|
|
}
|
|
|
|
/* If a manifest changes it's liveness or periodic updateness, we need
|
|
* to start/stop the manifest update task appropriately */
|
|
/* Keep this condition in sync with the one in
|
|
* gst_adaptive_demux_start_manifest_update_task()
|
|
*/
|
|
if (gst_adaptive_demux_is_live (demux) &&
|
|
klass->requires_periodical_playlist_update (demux)) {
|
|
gst_adaptive_demux_start_manifest_update_task (demux);
|
|
} else {
|
|
gst_adaptive_demux_stop_manifest_update_task (demux);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
handle_manifest_download_failure (DownloadRequest * request,
|
|
DownloadRequestState state, GstAdaptiveDemux * demux)
|
|
{
|
|
GST_FIXME_OBJECT (demux, "Manifest download failed.");
|
|
/* Retry or error out here */
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_adaptive_demux_update_manifest_default (GstAdaptiveDemux * demux)
|
|
{
|
|
DownloadRequest *request;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GError *error = NULL;
|
|
|
|
request = download_request_new_uri (demux->manifest_uri);
|
|
|
|
download_request_set_callbacks (request,
|
|
(DownloadRequestEventCallback) handle_manifest_download_complete,
|
|
(DownloadRequestEventCallback) handle_manifest_download_failure,
|
|
NULL, NULL, demux);
|
|
|
|
if (!downloadhelper_submit_request (demux->download_helper, NULL,
|
|
DOWNLOAD_FLAG_COMPRESS | DOWNLOAD_FLAG_FORCE_REFRESH, request,
|
|
&error)) {
|
|
if (error) {
|
|
GST_ELEMENT_WARNING (demux, RESOURCE, FAILED,
|
|
("Failed to download manifest: %s", error->message), (NULL));
|
|
g_clear_error (&error);
|
|
}
|
|
ret = GST_FLOW_NOT_LINKED;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
GstFlowReturn
|
|
gst_adaptive_demux_update_manifest (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
GstFlowReturn ret;
|
|
|
|
ret = klass->update_manifest (demux);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_adaptive_demux2_manual_manifest_update_cb (GstAdaptiveDemux * demux)
|
|
{
|
|
GST_MANIFEST_LOCK (demux);
|
|
gst_adaptive_demux_update_manifest (demux);
|
|
GST_MANIFEST_UNLOCK (demux);
|
|
|
|
return G_SOURCE_REMOVE;
|
|
}
|
|
|
|
/* called by a subclass that needs a callback to 'update_manifest'
|
|
* done with with MANIFEST_LOCK held */
|
|
void
|
|
gst_adaptive_demux2_manual_manifest_update (GstAdaptiveDemux * demux)
|
|
{
|
|
if (demux->priv->manifest_updates_cb != 0)
|
|
return; /* Callback already pending */
|
|
|
|
if (!demux->priv->manifest_updates_enabled) {
|
|
GST_LOG_OBJECT (demux, "Marking manual manifest update pending");
|
|
demux->priv->need_manual_manifest_update = TRUE;
|
|
return;
|
|
}
|
|
|
|
demux->priv->manifest_updates_cb =
|
|
gst_adaptive_demux_loop_call (demux->priv->scheduler_task,
|
|
(GSourceFunc) gst_adaptive_demux2_manual_manifest_update_cb, demux, NULL);
|
|
}
|
|
|
|
/* must be called with manifest_lock taken */
|
|
gboolean
|
|
gst_adaptive_demux_has_next_period (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
gboolean ret = FALSE;
|
|
|
|
if (klass->has_next_period)
|
|
ret = klass->has_next_period (demux);
|
|
GST_DEBUG_OBJECT (demux, "Has next period: %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* must be called from the scheduler task */
|
|
void
|
|
gst_adaptive_demux_advance_period (GstAdaptiveDemux * demux)
|
|
{
|
|
GstAdaptiveDemuxClass *klass = GST_ADAPTIVE_DEMUX_GET_CLASS (demux);
|
|
GstAdaptiveDemuxPeriod *previous_period = demux->input_period;
|
|
|
|
g_return_if_fail (klass->advance_period != NULL);
|
|
|
|
GST_DEBUG_OBJECT (demux, "Advancing to next period");
|
|
/* FIXME : no return value ? What if it fails ? */
|
|
klass->advance_period (demux);
|
|
|
|
if (previous_period == demux->input_period) {
|
|
GST_ERROR_OBJECT (demux, "Advancing period failed");
|
|
return;
|
|
}
|
|
|
|
/* Stop the previous period stream tasks */
|
|
gst_adaptive_demux_period_stop_tasks (previous_period);
|
|
|
|
gst_adaptive_demux_update_collection (demux, demux->input_period);
|
|
/* Figure out a pre-emptive selection based on the output period selection */
|
|
gst_adaptive_demux_period_transfer_selection (demux, demux->input_period,
|
|
demux->output_period);
|
|
|
|
gst_adaptive_demux_prepare_streams (demux, FALSE);
|
|
gst_adaptive_demux_start_tasks (demux);
|
|
}
|
|
|
|
/**
|
|
* gst_adaptive_demux_get_monotonic_time:
|
|
* Returns: a monotonically increasing time, using the system realtime clock
|
|
*/
|
|
GstClockTime
|
|
gst_adaptive_demux2_get_monotonic_time (GstAdaptiveDemux * demux)
|
|
{
|
|
g_return_val_if_fail (demux != NULL, GST_CLOCK_TIME_NONE);
|
|
return gst_adaptive_demux_clock_get_time (demux->realtime_clock);
|
|
}
|
|
|
|
/**
|
|
* gst_adaptive_demux_get_client_now_utc:
|
|
* @demux: #GstAdaptiveDemux
|
|
* Returns: the client's estimate of UTC
|
|
*
|
|
* Used to find the client's estimate of UTC, using the system realtime clock.
|
|
*/
|
|
GDateTime *
|
|
gst_adaptive_demux2_get_client_now_utc (GstAdaptiveDemux * demux)
|
|
{
|
|
return gst_adaptive_demux_clock_get_now_utc (demux->realtime_clock);
|
|
}
|
|
|
|
/**
|
|
* gst_adaptive_demux_is_running
|
|
* @demux: #GstAdaptiveDemux
|
|
* Returns: whether the demuxer is processing data
|
|
*
|
|
* Returns FALSE if shutdown has started (transitioning down from
|
|
* PAUSED), otherwise TRUE.
|
|
*/
|
|
gboolean
|
|
gst_adaptive_demux2_is_running (GstAdaptiveDemux * demux)
|
|
{
|
|
return g_atomic_int_get (&demux->running);
|
|
}
|
|
|
|
/**
|
|
* gst_adaptive_demux_get_qos_earliest_time:
|
|
*
|
|
* Returns: The QOS earliest time
|
|
*
|
|
* Since: 1.20
|
|
*/
|
|
GstClockTime
|
|
gst_adaptive_demux2_get_qos_earliest_time (GstAdaptiveDemux * demux)
|
|
{
|
|
GstClockTime earliest;
|
|
|
|
GST_OBJECT_LOCK (demux);
|
|
earliest = demux->priv->qos_earliest_time;
|
|
GST_OBJECT_UNLOCK (demux);
|
|
|
|
return earliest;
|
|
}
|
|
|
|
gboolean
|
|
gst_adaptive_demux2_add_stream (GstAdaptiveDemux * demux,
|
|
GstAdaptiveDemux2Stream * stream)
|
|
{
|
|
g_return_val_if_fail (demux && stream, FALSE);
|
|
|
|
/* FIXME : Migrate to parent */
|
|
g_return_val_if_fail (stream->demux == NULL, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (demux, "Adding stream %s", GST_OBJECT_NAME (stream));
|
|
|
|
TRACKS_LOCK (demux);
|
|
if (demux->input_period->prepared) {
|
|
GST_ERROR_OBJECT (demux,
|
|
"Attempted to add streams but no new period was created");
|
|
TRACKS_UNLOCK (demux);
|
|
return FALSE;
|
|
}
|
|
stream->demux = demux;
|
|
|
|
/* Takes ownership of the stream and adds the tracks */
|
|
if (!gst_adaptive_demux_period_add_stream (demux->input_period, stream)) {
|
|
GST_ERROR_OBJECT (demux, "Failed to add stream to period");
|
|
TRACKS_UNLOCK (demux);
|
|
return FALSE;
|
|
}
|
|
|
|
TRACKS_UNLOCK (demux);
|
|
return TRUE;
|
|
}
|
|
|
|
/* Return the current playback rate including any instant rate multiplier */
|
|
gdouble
|
|
gst_adaptive_demux_play_rate (GstAdaptiveDemux * demux)
|
|
{
|
|
gdouble rate;
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_LOCK (demux);
|
|
rate = demux->segment.rate * demux->instant_rate_multiplier;
|
|
GST_ADAPTIVE_DEMUX_SEGMENT_UNLOCK (demux);
|
|
return rate;
|
|
}
|
|
|
|
GstAdaptiveDemuxLoop *
|
|
gst_adaptive_demux_get_loop (GstAdaptiveDemux * demux)
|
|
{
|
|
return gst_adaptive_demux_loop_ref (demux->priv->scheduler_task);
|
|
}
|