mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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e1e48b9fea
Otherwise we could end up with *old* events leaking through on the next linking. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7609>
4595 lines
146 KiB
C
4595 lines
146 KiB
C
/* GStreamer
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*
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* Copyright (C) <2015> 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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#include <glib.h>
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#include <glib-object.h>
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#include <glib/gprintf.h>
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#include <gst/gst.h>
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#include <gst/pbutils/pbutils.h>
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#include "gstplaybackelements.h"
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#include "gstrawcaps.h"
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/**
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* SECTION:element-decodebin3
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* @title: decodebin3
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*
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* #GstBin that auto-magically constructs a decoding pipeline using available
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* decoders and demuxers via auto-plugging. The output is raw audio, video
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* or subtitle streams.
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*
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* decodebin3 differs from the previous decodebin (decodebin2) in important ways:
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*
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* * supports publication and selection of stream information via
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* GstStreamCollection messages and #GST_EVENT_SELECT_STREAMS events.
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*
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* * dynamically switches stream connections internally, and
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* reuses decoder elements when stream selections change, so that in
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* the normal case it maintains 1 decoder of each type (video/audio/subtitle)
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* and only creates new elements when streams change and an existing decoder
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* is not capable of handling the new format.
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*
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* * supports multiple input pads for the parallel decoding of auxiliary streams
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* not muxed with the primary stream.
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*
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* * does not handle network stream buffering. decodebin3 expects that network stream
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* buffering is handled upstream, before data is passed to it.
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*
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*/
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/*
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* Global design
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*
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* 1) From sink pad to elementary streams (GstParseBin or identity)
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*
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* Note : If the incoming streams are push-based-only and are compatible with
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* either the output caps or a potential decoder, the usage of parsebin is
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* replaced by a simple passthrough identity element.
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*
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* The input sink pads are fed to GstParseBin. GstParseBin will feed them
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* through typefind. When the caps are detected (or changed) we recursively
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* figure out which demuxer, parser or depayloader is needed until we get to
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* elementary streams.
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*
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* All elementary streams (whether decoded or not, whether exposed or not) are
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* fed through multiqueue. There is only *one* multiqueue in decodebin3.
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*
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* => MultiQueue is the cornerstone.
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* => No buffering before multiqueue
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*
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* 2) Elementary streams
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*
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* After GstParseBin, there are 3 main components:
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* 1) Input Streams (provided by GstParseBin)
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* 2) Multiqueue slots
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* 3) Output Streams
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*
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* Input Streams correspond to the stream coming from GstParseBin and that gets
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* fed into a multiqueue slot.
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*
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* Output Streams correspond to the combination of a (optional) decoder and an
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* output ghostpad. Output Streams can be moved from one multiqueue slot to
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* another, can reconfigure itself (different decoders), and can be
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* added/removed depending on the configuration (all streams outputted, only one
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* of each type, ...).
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*
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* Multiqueue slots correspond to a pair of sink/src pad from multiqueue. For
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* each 'active' Input Stream there is a corresponding slot.
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* Slots might have different streams on input and output (due to internal
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* buffering).
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*
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* Due to internal queuing/buffering/..., all those components (might) behave
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* asynchronously. Therefore probes will be used on each component source pad to
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* detect various key-points:
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* * EOS :
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* the stream is done => Mark that component as done, optionally freeing/removing it
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* * STREAM_START :
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* a new stream is starting => link it further if needed
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*
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* 3) Gradual replacement
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*
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* If the caps change at any point in decodebin (input sink pad, demuxer output,
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* multiqueue output, ..), we gradually replace (if needed) the following elements.
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*
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* This is handled by the probes in various locations:
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* a) typefind output
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* b) multiqueue input (source pad of Input Streams)
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* c) multiqueue output (source pad of Multiqueue Slots)
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* d) final output (target of source ghostpads)
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*
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* When CAPS event arrive at those points, one of three things can happen:
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* a) There is no elements downstream yet, just create/link-to following elements
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* b) There are downstream elements, do a ACCEPT_CAPS query
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* b.1) The new CAPS are accepted, keep current configuration
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* b.2) The new CAPS are not accepted, remove following elements then do a)
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*
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* Components:
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*
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* MultiQ Output
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* Input(s) Slots Streams
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* /-------------------------------------------\ /-----\ /------------- \
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*
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* +-------------------------------------------------------------------------+
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* | |
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* | +---------------------------------------------+ |
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* | | GstParseBin(s) | |
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* | | +--------------+ | +-----+ |
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* | | | |---[parser]-[|--| Mul |---[ decoder ]-[|
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* |]--[ typefind ]---| demuxer(s) |------------[| | ti | |
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* | | | (if needed) |---[parser]-[|--| qu | |
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* | | | |---[parser]-[|--| eu |---[ decoder ]-[|
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* | | +--------------+ | +------ ^ |
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* | +---------------------------------------------+ ^ | |
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* | ^ | | |
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* +-----------------------------------------------+--------+-------------+--+
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* | | |
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* | | |
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* Probes --/--------/-------------/
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*
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* 4) ATOMIC SWITCHING
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*
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* We want to ensure we re-use decoders when switching streams. This takes place
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* at the multiqueue output level.
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*
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* MAIN CONCEPTS
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* 1) Activating a stream (i.e. linking a slot to an output) is only done within
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* the streaming thread in the multiqueue_src_probe() and only if the
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* stream is in the REQUESTED selection.
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* 2) Deactivating a stream (i.e. unlinking a slot from an output) is also done
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* within the stream thread, but only in a purposefully called IDLE probe
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* that calls mq_slot_reassign().
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*
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* Based on those two principles, 2 "selection" of streams (stream-id) are used:
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* 1) requested_selection
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* All streams within that list should be activated
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* 2) to_activate
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* List of streams that will be moved to requested_selection in the
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* mq_slot_reassign() method (i.e. once a stream was deactivated, and the
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* output was retargetted)
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*
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* 5) Change on collections/selection
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*
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* The collection of streams available can change through time. Either because
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* there is an update in the stream itself (like mpeg-ts/mpeg-ts), or from
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* gapless playback changes, etc ...
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*
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* This therefore means that there are potentially more than one "collection" of
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* streams in decodebin3 (i.e. input streams might be different from what is
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* being outputted). And the incoming stream selection might be happening on any
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* of those.
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*
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* In order to handle that, decodebin3 has a list of `DecodebinCollection` which
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* groups together the GstStreamCollection, the requested streams to activate
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* and their status.
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*
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* * The input and output collection can be different
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* * The output_collection is the one *currently* present on the output of
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* multiqueue
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* * For each incoming GST_EVENT_SELECT_STREAMS, we figure out the oldest
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* GstStreamCollection to which this applies and store the list of requested
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* streams. If it is the current output_collection we can handle the switch
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* immediately, else it will be handled later.
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* * By detecting the new GST_EVENT_STREAM_START on the output of multiqueue, we
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* can identify when we are switching to a new DecodebinCollection. If that is
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* the case we progressively switch over to the new requested streams.
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*/
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GST_DEBUG_CATEGORY_STATIC (decodebin3_debug);
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#define GST_CAT_DEFAULT decodebin3_debug
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#define GST_TYPE_DECODEBIN3 (gst_decodebin3_get_type ())
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#define EXTRA_DEBUG 1
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typedef struct _GstDecodebin3 GstDecodebin3;
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typedef struct _GstDecodebin3Class GstDecodebin3Class;
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typedef struct _DecodebinInputStream DecodebinInputStream;
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typedef struct _DecodebinInput DecodebinInput;
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typedef struct _DecodebinOutputStream DecodebinOutputStream;
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/* Store information regarding collections */
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typedef struct
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{
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GstStreamCollection *collection;
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/* The list of stream-ids requested for this collection.
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*
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* Can be NULL (we need to make a selection ourselves when this collection
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* starts to appear on the output of multiqueue)
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*/
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GList *requested_selection;
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/* TEMPORARY : List of streams to activate, LEGACY usage */
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GList *to_activate;
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/* The seqnum of the event that created the list of requested streams
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* (GST_SEQNUM_INVALID if not requested from outside) */
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guint32 seqnum;
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/* TRUE if GST_MESSAGE_STREAMS_SELECTED was posted for the stream_ids. Must be
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* resetted whenever the stream_ids changes */
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gboolean posted_streams_selected_msg;
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/* TRUE if all stream_ids have an associated MultiqueueSlot. i.e. the
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* collection is active */
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gboolean all_streams_present;
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/* TRUE if this collection is an update of the previous one. i.e. it only
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* *adds* new streams. */
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gboolean is_update;
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} DecodebinCollection;
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typedef struct
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{
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GstElement *element;
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GstMessage *error; // Last error message seen for that element
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GstMessage *latency; // Last latency message seen for that element
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} CandidateDecoder;
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struct _GstDecodebin3
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{
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GstBin bin;
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/* input_lock protects the following variables */
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GMutex input_lock;
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/* Main input (static sink pad) */
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DecodebinInput *main_input;
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/* Supplementary input (request sink pads) */
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GList *other_inputs;
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/* counter for input */
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guint32 input_counter;
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/* Current stream group_id (default : GST_GROUP_ID_INVALID) */
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guint32 current_group_id;
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/* Whether decodebin is currently posting a stream collection on the bus */
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gboolean posting_collection;
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/* GCond to block against and know when posting_collection changed */
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GCond posting_cond;
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/* End of variables protected by input_lock */
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GstElement *multiqueue;
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GstClockTime default_mq_min_interleave;
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GstClockTime current_mq_min_interleave;
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/* selection_lock protects access to following variables */
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GMutex selection_lock;
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GList *input_streams; /* List of DecodebinInputStream for active collection */
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GList *output_streams; /* List of DecodebinOutputStream used for output */
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GList *slots; /* List of MultiQueueSlot */
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guint slot_id;
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/* List of DecodebinCollection in existence. ordered by oldest (i.e. first is
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* currently outputted, last is most recent incoming */
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GList *collections;
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/* Current input collection. */
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DecodebinCollection *input_collection;
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/* Current output collection */
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DecodebinCollection *output_collection;
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/* End of variables protected by selection_lock */
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/* Upstream handles stream selection */
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gboolean upstream_handles_selection;
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/* Factories */
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GMutex factories_lock;
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guint32 factories_cookie;
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/* All DECODABLE factories */
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GList *factories;
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/* Only DECODER factories */
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GList *decoder_factories;
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/* DECODABLE but not DECODER factories */
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GList *decodable_factories;
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/* counters for pads */
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guint32 apadcount, vpadcount, tpadcount, opadcount;
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/* Properties */
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GstCaps *caps;
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GList *candidate_decoders;
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};
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struct _GstDecodebin3Class
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{
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GstBinClass class;
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gint (*select_stream) (GstDecodebin3 * dbin,
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GstStreamCollection * collection, GstStream * stream);
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};
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/* Input of decodebin, controls input pad and parsebin */
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struct _DecodebinInput
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{
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GstDecodebin3 *dbin;
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gboolean is_main;
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GstPad *ghost_sink;
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GstPad *parsebin_sink;
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GstStreamCollection *collection; /* Active collection */
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gboolean upstream_selected;
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guint group_id;
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/* Either parsebin or identity is used */
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GstElement *parsebin;
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GstElement *identity;
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gulong pad_added_sigid;
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gulong pad_removed_sigid;
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gulong drained_sigid;
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/* TRUE if the input got drained */
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gboolean drained;
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/* TEMPORARY HACK for knowing if upstream is already parsed and identity can
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* be avoided */
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gboolean input_is_parsed;
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/* List of events that need to be pushed once we get the first
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* GST_EVENT_STREAM_COLLECTION */
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GList *events_waiting_for_collection;
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/* input buffer probe for detecting whether input has caps or not */
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gulong input_probe;
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};
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/* Streams that come from parsebin or identity */
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/* FIXME : All this is hardcoded. Switch to tree of chains */
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struct _DecodebinInputStream
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{
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GstDecodebin3 *dbin;
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GstStream *active_stream;
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DecodebinInput *input;
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GstPad *srcpad; /* From parsebin or identity */
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/* id of the pad event probe */
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gulong output_event_probe_id;
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/* id of the buffer blocking probe on the parsebin srcpad pad */
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gulong buffer_probe_id;
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/* Whether we saw an EOS on input. This should be treated accordingly
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* when the stream is no longer used */
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gboolean saw_eos;
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};
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/* Multiqueue Slots */
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typedef struct _MultiQueueSlot
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{
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guint id;
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GstDecodebin3 *dbin;
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/* Type of stream handled by this slot */
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GstStreamType type;
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/* Linked input and output */
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DecodebinInputStream *input;
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/* pending => last stream received on sink pad */
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GstStream *pending_stream;
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/* active => last stream outputted on source pad */
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GstStream *active_stream;
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/* Cache of the stream_id of active_stream */
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const gchar *active_stream_id;
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GstPad *sink_pad, *src_pad;
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/* id of the MQ src_pad event probe */
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gulong probe_id;
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/* keyframe dropping probe */
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gulong drop_probe_id;
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/* TRUE if EOS was pushed out by multiqueue */
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gboolean is_drained;
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DecodebinOutputStream *output;
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} MultiQueueSlot;
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/* Streams that are exposed downstream (i.e. output) */
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struct _DecodebinOutputStream
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{
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GstDecodebin3 *dbin;
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/* The type of stream handled by this output stream */
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GstStreamType type;
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/* The slot to which this output stream is currently connected to */
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MultiQueueSlot *slot;
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GstElement *decoder; /* Optional */
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GstPad *decoder_sink, *decoder_src;
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gboolean linked;
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/* ghostpad */
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GstPad *src_pad;
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/* Flag if ghost pad is exposed */
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gboolean src_exposed;
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/* Reported decoder latency */
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GstClockTime decoder_latency;
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};
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/* properties */
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enum
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{
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PROP_0,
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PROP_CAPS
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};
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/* signals */
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enum
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{
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SIGNAL_SELECT_STREAM,
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SIGNAL_ABOUT_TO_FINISH,
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LAST_SIGNAL
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};
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static guint gst_decodebin3_signals[LAST_SIGNAL] = { 0 };
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#define SELECTION_LOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"selection locking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (&dbin->selection_lock); \
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GST_LOG_OBJECT (dbin, \
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"selection locked from thread %p", \
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g_thread_self ()); \
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} G_STMT_END
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#define SELECTION_UNLOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"selection unlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (&dbin->selection_lock); \
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} G_STMT_END
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#define INPUT_LOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"input locking from thread %p", \
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g_thread_self ()); \
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g_mutex_lock (&dbin->input_lock); \
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GST_LOG_OBJECT (dbin, \
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"input locked from thread %p", \
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g_thread_self ()); \
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} G_STMT_END
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#define INPUT_UNLOCK(dbin) G_STMT_START { \
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GST_LOG_OBJECT (dbin, \
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"input unlocking from thread %p", \
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g_thread_self ()); \
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g_mutex_unlock (&dbin->input_lock); \
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} G_STMT_END
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GType gst_decodebin3_get_type (void);
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#define gst_decodebin3_parent_class parent_class
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G_DEFINE_TYPE (GstDecodebin3, gst_decodebin3, GST_TYPE_BIN);
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#define _do_init \
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GST_DEBUG_CATEGORY_INIT (decodebin3_debug, "decodebin3", 0, "decoder bin");\
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playback_element_init (plugin);
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GST_ELEMENT_REGISTER_DEFINE_WITH_CODE (decodebin3, "decodebin3", GST_RANK_NONE,
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GST_TYPE_DECODEBIN3, _do_init);
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static GstStaticCaps default_raw_caps = GST_STATIC_CAPS (DEFAULT_RAW_CAPS);
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static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate request_sink_template =
|
|
GST_STATIC_PAD_TEMPLATE ("sink_%u",
|
|
GST_PAD_SINK,
|
|
GST_PAD_REQUEST,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
static GstStaticPadTemplate video_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("video_%u",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
static GstStaticPadTemplate audio_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("audio_%u",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
static GstStaticPadTemplate text_src_template =
|
|
GST_STATIC_PAD_TEMPLATE ("text_%u",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src_%u",
|
|
GST_PAD_SRC,
|
|
GST_PAD_SOMETIMES,
|
|
GST_STATIC_CAPS_ANY);
|
|
|
|
|
|
static void gst_decodebin3_dispose (GObject * object);
|
|
static void gst_decodebin3_finalize (GObject * object);
|
|
static void gst_decodebin3_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_decodebin3_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static gboolean parsebin_autoplug_continue_cb (GstElement *
|
|
parsebin, GstPad * pad, GstCaps * caps, GstDecodebin3 * dbin);
|
|
|
|
static gint
|
|
gst_decodebin3_select_stream (GstDecodebin3 * dbin,
|
|
GstStreamCollection * collection, GstStream * stream)
|
|
{
|
|
GST_LOG_OBJECT (dbin, "default select-stream, returning -1");
|
|
|
|
return -1;
|
|
}
|
|
|
|
static GstPad *gst_decodebin3_request_new_pad (GstElement * element,
|
|
GstPadTemplate * temp, const gchar * name, const GstCaps * caps);
|
|
static void gst_decodebin3_release_pad (GstElement * element, GstPad * pad);
|
|
static GstMessage *handle_stream_collection_locked (GstDecodebin3 * dbin,
|
|
GstStreamCollection * collection, DecodebinInput * input);
|
|
static void gst_decodebin3_handle_message (GstBin * bin, GstMessage * message);
|
|
static GstStateChangeReturn gst_decodebin3_change_state (GstElement * element,
|
|
GstStateChange transition);
|
|
static gboolean gst_decodebin3_send_event (GstElement * element,
|
|
GstEvent * event);
|
|
|
|
static void gst_decode_bin_update_factories_list (GstDecodebin3 * dbin);
|
|
|
|
static DecodebinCollection *db_collection_new (GstStreamCollection *
|
|
collection);
|
|
static void db_collection_free (DecodebinCollection * collection);
|
|
|
|
static void gst_decodebin_input_reset (DecodebinInput * input);
|
|
static void gst_decodebin_input_free (DecodebinInput * input);
|
|
static DecodebinInput *gst_decodebin_input_new (GstDecodebin3 * dbin,
|
|
gboolean main);
|
|
static gboolean gst_decodebin_input_set_group_id (DecodebinInput * input,
|
|
guint32 * group_id);
|
|
static void gst_decodebin_input_unblock_streams (DecodebinInput * input,
|
|
gboolean unblock_other_inputs);
|
|
static void gst_decodebin_input_link_to_slot (DecodebinInputStream * input);
|
|
|
|
static gboolean db_output_stream_reconfigure (DecodebinOutputStream * output,
|
|
GstMessage ** msg);
|
|
static void db_output_stream_reset (DecodebinOutputStream * output);
|
|
static void db_output_stream_free (DecodebinOutputStream * output);
|
|
static DecodebinOutputStream *db_output_stream_new (GstDecodebin3 * dbin,
|
|
GstStreamType type);
|
|
|
|
static GstPadProbeReturn mq_slot_unassign_probe (GstPad * pad,
|
|
GstPadProbeInfo * info, MultiQueueSlot * slot);
|
|
static void mq_slot_reassign (MultiQueueSlot * slot);
|
|
static MultiQueueSlot
|
|
* gst_decodebin_get_slot_for_input_stream_locked (GstDecodebin3 * dbin,
|
|
DecodebinInputStream * input);
|
|
static void mq_slot_free (GstDecodebin3 * dbin, MultiQueueSlot * slot);
|
|
|
|
static void handle_stream_switch (GstDecodebin3 * dbin);
|
|
|
|
static GstStreamCollection *get_merged_collection (GstDecodebin3 * dbin);
|
|
static void update_requested_selection (GstDecodebin3 * dbin,
|
|
DecodebinCollection * new_collection);
|
|
|
|
static void parsebin_pad_added_cb (GstElement * demux, GstPad * pad,
|
|
DecodebinInput * input);
|
|
static void parsebin_pad_removed_cb (GstElement * demux, GstPad * pad,
|
|
DecodebinInput * input);
|
|
|
|
static gboolean
|
|
_gst_int_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
gint res = g_value_get_int (handler_return);
|
|
|
|
g_value_set_int (return_accu, res);
|
|
|
|
if (res == -1)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_class_init (GstDecodebin3Class * klass)
|
|
{
|
|
GObjectClass *gobject_klass = (GObjectClass *) klass;
|
|
GstElementClass *element_class = (GstElementClass *) klass;
|
|
GstBinClass *bin_klass = (GstBinClass *) klass;
|
|
|
|
gobject_klass->dispose = gst_decodebin3_dispose;
|
|
gobject_klass->finalize = gst_decodebin3_finalize;
|
|
gobject_klass->set_property = gst_decodebin3_set_property;
|
|
gobject_klass->get_property = gst_decodebin3_get_property;
|
|
|
|
g_object_class_install_property (gobject_klass, PROP_CAPS,
|
|
g_param_spec_boxed ("caps", "Caps",
|
|
"The caps on which to stop decoding. (NULL = default)",
|
|
GST_TYPE_CAPS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* GstDecodebin3::select-stream
|
|
* @decodebin: a #GstDecodebin3
|
|
* @collection: a #GstStreamCollection
|
|
* @stream: a #GstStream
|
|
*
|
|
* This signal is emitted whenever @decodebin needs to decide whether
|
|
* to expose a @stream of a given @collection.
|
|
*
|
|
* Note that the prefered way to select streams is to listen to
|
|
* GST_MESSAGE_STREAM_COLLECTION on the bus and send a
|
|
* GST_EVENT_SELECT_STREAMS with the streams the user wants.
|
|
*
|
|
* Returns: 1 if the stream should be selected, 0 if it shouldn't be selected.
|
|
* A value of -1 (default) lets @decodebin decide what to do with the stream.
|
|
* */
|
|
gst_decodebin3_signals[SIGNAL_SELECT_STREAM] =
|
|
g_signal_new ("select-stream", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDecodebin3Class, select_stream),
|
|
_gst_int_accumulator, NULL, NULL,
|
|
G_TYPE_INT, 2, GST_TYPE_STREAM_COLLECTION, GST_TYPE_STREAM);
|
|
|
|
/**
|
|
* GstDecodebin3::about-to-finish:
|
|
*
|
|
* This signal is emitted when the data for the selected URI is
|
|
* entirely buffered and it is safe to specify another URI.
|
|
*/
|
|
gst_decodebin3_signals[SIGNAL_ABOUT_TO_FINISH] =
|
|
g_signal_new ("about-to-finish", G_TYPE_FROM_CLASS (klass),
|
|
G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0, G_TYPE_NONE);
|
|
|
|
|
|
element_class->request_new_pad =
|
|
GST_DEBUG_FUNCPTR (gst_decodebin3_request_new_pad);
|
|
element_class->change_state = GST_DEBUG_FUNCPTR (gst_decodebin3_change_state);
|
|
element_class->send_event = GST_DEBUG_FUNCPTR (gst_decodebin3_send_event);
|
|
element_class->release_pad = GST_DEBUG_FUNCPTR (gst_decodebin3_release_pad);
|
|
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&sink_template));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&request_sink_template));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&video_src_template));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&audio_src_template));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&text_src_template));
|
|
gst_element_class_add_pad_template (element_class,
|
|
gst_static_pad_template_get (&src_template));
|
|
|
|
gst_element_class_set_static_metadata (element_class,
|
|
"Decoder Bin 3", "Generic/Bin/Decoder",
|
|
"Autoplug and decode to raw media",
|
|
"Edward Hervey <edward@centricular.com>");
|
|
|
|
bin_klass->handle_message = gst_decodebin3_handle_message;
|
|
|
|
klass->select_stream = gst_decodebin3_select_stream;
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_init (GstDecodebin3 * dbin)
|
|
{
|
|
/* Create main input */
|
|
dbin->main_input = gst_decodebin_input_new (dbin, TRUE);
|
|
|
|
dbin->multiqueue = gst_element_factory_make ("multiqueue", NULL);
|
|
g_object_get (dbin->multiqueue, "min-interleave-time",
|
|
&dbin->default_mq_min_interleave, NULL);
|
|
dbin->current_mq_min_interleave = dbin->default_mq_min_interleave;
|
|
g_object_set (dbin->multiqueue, "sync-by-running-time", TRUE,
|
|
"max-size-buffers", 0, "use-interleave", TRUE, NULL);
|
|
gst_bin_add ((GstBin *) dbin, dbin->multiqueue);
|
|
|
|
dbin->current_group_id = GST_GROUP_ID_INVALID;
|
|
|
|
g_mutex_init (&dbin->factories_lock);
|
|
g_mutex_init (&dbin->selection_lock);
|
|
g_mutex_init (&dbin->input_lock);
|
|
g_cond_init (&dbin->posting_cond);
|
|
dbin->posting_collection = FALSE;
|
|
|
|
dbin->caps = gst_static_caps_get (&default_raw_caps);
|
|
|
|
GST_OBJECT_FLAG_SET (dbin, GST_BIN_FLAG_STREAMS_AWARE);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_reset (GstDecodebin3 * dbin)
|
|
{
|
|
GList *tmp;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Resetting");
|
|
|
|
SELECTION_LOCK (dbin);
|
|
/* Free output streams */
|
|
g_list_free_full (dbin->output_streams,
|
|
(GDestroyNotify) db_output_stream_free);
|
|
dbin->output_streams = NULL;
|
|
|
|
/* Free multiqueue slots */
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
mq_slot_free (dbin, slot);
|
|
}
|
|
g_list_free (dbin->slots);
|
|
dbin->slots = NULL;
|
|
dbin->current_group_id = GST_GROUP_ID_INVALID;
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
/* Reset the inputs */
|
|
gst_decodebin_input_reset (dbin->main_input);
|
|
for (tmp = dbin->other_inputs; tmp; tmp = tmp->next) {
|
|
gst_decodebin_input_reset (tmp->data);
|
|
}
|
|
|
|
/* Reset multiqueue to default interleave */
|
|
g_object_set (dbin->multiqueue, "min-interleave-time",
|
|
dbin->default_mq_min_interleave, NULL);
|
|
|
|
SELECTION_LOCK (dbin);
|
|
dbin->current_mq_min_interleave = dbin->default_mq_min_interleave;
|
|
dbin->upstream_handles_selection = FALSE;
|
|
|
|
g_list_free_full (dbin->collections, (GDestroyNotify) db_collection_free);
|
|
dbin->collections = NULL;
|
|
dbin->input_collection = dbin->output_collection = NULL;
|
|
SELECTION_UNLOCK (dbin);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_dispose (GObject * object)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) object;
|
|
|
|
gst_decodebin3_reset (dbin);
|
|
|
|
g_mutex_lock (&dbin->factories_lock);
|
|
if (dbin->factories) {
|
|
gst_plugin_feature_list_free (dbin->factories);
|
|
dbin->factories = NULL;
|
|
}
|
|
if (dbin->decoder_factories) {
|
|
g_list_free (dbin->decoder_factories);
|
|
dbin->decoder_factories = NULL;
|
|
}
|
|
if (dbin->decodable_factories) {
|
|
g_list_free (dbin->decodable_factories);
|
|
dbin->decodable_factories = NULL;
|
|
}
|
|
g_mutex_unlock (&dbin->factories_lock);
|
|
|
|
INPUT_LOCK (dbin);
|
|
if (dbin->main_input) {
|
|
gst_decodebin_input_free (dbin->main_input);
|
|
dbin->main_input = NULL;
|
|
}
|
|
|
|
g_list_free_full (dbin->other_inputs,
|
|
(GDestroyNotify) gst_decodebin_input_free);
|
|
dbin->other_inputs = NULL;
|
|
INPUT_UNLOCK (dbin);
|
|
|
|
gst_clear_caps (&dbin->caps);
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_finalize (GObject * object)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) object;
|
|
|
|
g_mutex_clear (&dbin->factories_lock);
|
|
g_mutex_clear (&dbin->selection_lock);
|
|
g_mutex_clear (&dbin->input_lock);
|
|
g_cond_clear (&dbin->posting_cond);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) object;
|
|
|
|
switch (prop_id) {
|
|
case PROP_CAPS:
|
|
GST_OBJECT_LOCK (dbin);
|
|
if (dbin->caps)
|
|
gst_caps_unref (dbin->caps);
|
|
dbin->caps = g_value_dup_boxed (value);
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) object;
|
|
|
|
switch (prop_id) {
|
|
case PROP_CAPS:
|
|
GST_OBJECT_LOCK (dbin);
|
|
g_value_set_boxed (value, dbin->caps);
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Get the intersection of parser caps and available (sorted) decoders */
|
|
static GstCaps *
|
|
get_parser_caps_filter (GstDecodebin3 * dbin, GstCaps * caps)
|
|
{
|
|
GList *tmp;
|
|
GstCaps *filter_caps;
|
|
|
|
/* If no filter was provided, it can handle anything */
|
|
if (!caps || gst_caps_is_any (caps))
|
|
return gst_caps_new_any ();
|
|
|
|
filter_caps = gst_caps_new_empty ();
|
|
|
|
g_mutex_lock (&dbin->factories_lock);
|
|
gst_decode_bin_update_factories_list (dbin);
|
|
for (tmp = dbin->decoder_factories; tmp; tmp = tmp->next) {
|
|
GstElementFactory *factory = (GstElementFactory *) tmp->data;
|
|
GstCaps *tcaps, *intersection;
|
|
const GList *tmps;
|
|
|
|
GST_LOG ("Trying factory %s",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
|
|
for (tmps = gst_element_factory_get_static_pad_templates (factory); tmps;
|
|
tmps = tmps->next) {
|
|
GstStaticPadTemplate *st = (GstStaticPadTemplate *) tmps->data;
|
|
if (st->direction != GST_PAD_SINK || st->presence != GST_PAD_ALWAYS)
|
|
continue;
|
|
tcaps = gst_static_pad_template_get_caps (st);
|
|
intersection =
|
|
gst_caps_intersect_full (tcaps, caps, GST_CAPS_INTERSECT_FIRST);
|
|
filter_caps = gst_caps_merge (filter_caps, intersection);
|
|
gst_caps_unref (tcaps);
|
|
}
|
|
}
|
|
g_mutex_unlock (&dbin->factories_lock);
|
|
GST_DEBUG_OBJECT (dbin, "Got filter caps %" GST_PTR_FORMAT, filter_caps);
|
|
return filter_caps;
|
|
}
|
|
|
|
static gboolean
|
|
check_parser_caps_filter (GstDecodebin3 * dbin, GstCaps * caps)
|
|
{
|
|
GList *tmp;
|
|
gboolean res = FALSE;
|
|
GstCaps *default_raw = gst_static_caps_get (&default_raw_caps);
|
|
|
|
if (gst_caps_can_intersect (caps, default_raw)) {
|
|
GST_INFO_OBJECT (dbin, "Dealing with raw stream from the demuxer, "
|
|
" we can handle them even if we won't expose then");
|
|
gst_caps_unref (default_raw);
|
|
|
|
return TRUE;
|
|
}
|
|
gst_caps_unref (default_raw);
|
|
|
|
g_mutex_lock (&dbin->factories_lock);
|
|
gst_decode_bin_update_factories_list (dbin);
|
|
for (tmp = dbin->decoder_factories; tmp; tmp = tmp->next) {
|
|
GstElementFactory *factory = (GstElementFactory *) tmp->data;
|
|
GstCaps *tcaps;
|
|
const GList *tmps;
|
|
|
|
GST_LOG ("Trying factory %s",
|
|
gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)));
|
|
for (tmps = gst_element_factory_get_static_pad_templates (factory); tmps;
|
|
tmps = tmps->next) {
|
|
GstStaticPadTemplate *st = (GstStaticPadTemplate *) tmps->data;
|
|
if (st->direction != GST_PAD_SINK || st->presence != GST_PAD_ALWAYS)
|
|
continue;
|
|
tcaps = gst_static_pad_template_get_caps (st);
|
|
if (gst_caps_can_intersect (tcaps, caps)) {
|
|
res = TRUE;
|
|
gst_caps_unref (tcaps);
|
|
goto beach;
|
|
}
|
|
gst_caps_unref (tcaps);
|
|
}
|
|
}
|
|
beach:
|
|
g_mutex_unlock (&dbin->factories_lock);
|
|
GST_DEBUG_OBJECT (dbin, "Can intersect %" GST_PTR_FORMAT ": %d", caps, res);
|
|
return res;
|
|
}
|
|
|
|
/* Probe on the output of a decodebin input stream (from parsebin or identity) */
|
|
static GstPadProbeReturn
|
|
gst_decodebin_input_stream_src_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
DecodebinInputStream * input)
|
|
{
|
|
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
|
|
|
|
if (GST_IS_EVENT (GST_PAD_PROBE_INFO_DATA (info))) {
|
|
GstEvent *ev = GST_PAD_PROBE_INFO_EVENT (info);
|
|
|
|
GST_DEBUG_OBJECT (pad, "Got event %s", GST_EVENT_TYPE_NAME (ev));
|
|
switch (GST_EVENT_TYPE (ev)) {
|
|
case GST_EVENT_STREAM_START:
|
|
{
|
|
GstStream *stream = NULL;
|
|
guint group_id = GST_GROUP_ID_INVALID;
|
|
|
|
if (!gst_event_parse_group_id (ev, &group_id)) {
|
|
GST_FIXME_OBJECT (pad,
|
|
"Consider implementing group-id handling on stream-start event");
|
|
group_id = gst_util_group_id_next ();
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (pad, "Got stream-start, group_id:%d, input %p",
|
|
group_id, input->input);
|
|
if (gst_decodebin_input_set_group_id (input->input, &group_id)) {
|
|
ev = gst_event_make_writable (ev);
|
|
gst_event_set_group_id (ev, group_id);
|
|
GST_PAD_PROBE_INFO_DATA (info) = ev;
|
|
}
|
|
input->saw_eos = FALSE;
|
|
|
|
gst_event_parse_stream (ev, &stream);
|
|
/* FIXME : Would we ever end up with a stream already set on the input ?? */
|
|
if (stream) {
|
|
if (input->active_stream != stream) {
|
|
if (input->active_stream)
|
|
gst_object_unref (input->active_stream);
|
|
input->active_stream = stream;
|
|
/* We have the beginning of a stream, get a multiqueue slot and link to it */
|
|
SELECTION_LOCK (input->dbin);
|
|
gst_decodebin_input_link_to_slot (input);
|
|
SELECTION_UNLOCK (input->dbin);
|
|
} else
|
|
gst_object_unref (stream);
|
|
}
|
|
}
|
|
break;
|
|
case GST_EVENT_GAP:
|
|
{
|
|
/* If we are still waiting to be unblocked and we get a gap, unblock */
|
|
if (input->buffer_probe_id) {
|
|
GST_DEBUG_OBJECT (pad, "Got a gap event! Unblocking input(s) !");
|
|
gst_decodebin_input_unblock_streams (input->input, TRUE);
|
|
}
|
|
break;
|
|
}
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps = NULL;
|
|
gst_event_parse_caps (ev, &caps);
|
|
GST_DEBUG_OBJECT (pad, "caps %" GST_PTR_FORMAT, caps);
|
|
if (caps && input->active_stream)
|
|
gst_stream_set_caps (input->active_stream, caps);
|
|
}
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "Marking input as EOS");
|
|
input->saw_eos = TRUE;
|
|
}
|
|
break;
|
|
case GST_EVENT_FLUSH_STOP:
|
|
GST_DEBUG_OBJECT (pad, "Clear saw_eos flag");
|
|
input->saw_eos = FALSE;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (GST_IS_QUERY (GST_PAD_PROBE_INFO_DATA (info))) {
|
|
if (input->input && input->input->identity) {
|
|
GST_DEBUG_OBJECT (pad, "Letting query through");
|
|
} else {
|
|
GstQuery *q = GST_PAD_PROBE_INFO_QUERY (info);
|
|
GST_DEBUG_OBJECT (pad, "Seeing query %" GST_PTR_FORMAT, q);
|
|
/* If we have a parser, we want to reply to the caps query */
|
|
/* FIXME: Set a flag when the input stream is created for
|
|
* streams where we shouldn't reply to these queries */
|
|
if (GST_QUERY_TYPE (q) == GST_QUERY_CAPS
|
|
&& (info->type & GST_PAD_PROBE_TYPE_PULL)) {
|
|
GstCaps *filter = NULL;
|
|
GstCaps *allowed;
|
|
gst_query_parse_caps (q, &filter);
|
|
allowed = get_parser_caps_filter (input->dbin, filter);
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Intercepting caps query, setting %" GST_PTR_FORMAT, allowed);
|
|
gst_query_set_caps_result (q, allowed);
|
|
gst_caps_unref (allowed);
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
} else if (GST_QUERY_TYPE (q) == GST_QUERY_ACCEPT_CAPS) {
|
|
GstCaps *prop = NULL;
|
|
gst_query_parse_accept_caps (q, &prop);
|
|
/* Fast check against target caps */
|
|
if (gst_caps_can_intersect (prop, input->dbin->caps)) {
|
|
gst_query_set_accept_caps_result (q, TRUE);
|
|
} else {
|
|
gboolean accepted = check_parser_caps_filter (input->dbin, prop);
|
|
/* check against caps filter */
|
|
gst_query_set_accept_caps_result (q, accepted);
|
|
GST_DEBUG_OBJECT (pad, "ACCEPT_CAPS query, returning %d", accepted);
|
|
}
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
}
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
gst_decodebin_input_stream_buffer_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
DecodebinInput * input)
|
|
{
|
|
/* We have at least one buffer pending, unblock parsebin/identity pads */
|
|
GST_DEBUG_OBJECT (pad, "Got a buffer ! unblocking");
|
|
gst_decodebin_input_unblock_streams (input, TRUE);
|
|
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
/** gst_decodebin_input_add_stream:
|
|
* @input: A #DecodebinInput
|
|
* @pad: (transfer none): The #GstPad that generates this stream
|
|
* @stream: (allow none) (transfer full): The #GstStream if known
|
|
*
|
|
* Creates a new #DecodebinInputstream for the given @pad and @stream, and adds
|
|
* it to the list of #GstDecodebin3 input_streams.
|
|
*
|
|
* Returns: The new #DecodebinInputstream.
|
|
*/
|
|
/* Call with selection lock */
|
|
static DecodebinInputStream *
|
|
gst_decodebin_input_add_stream (DecodebinInput * input, GstPad * pad,
|
|
GstStream * stream)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
DecodebinInputStream *res = g_new0 (DecodebinInputStream, 1);
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Creating input stream for %" GST_PTR_FORMAT, pad);
|
|
|
|
res->dbin = dbin;
|
|
res->input = input;
|
|
res->srcpad = gst_object_ref (pad);
|
|
res->active_stream = stream;
|
|
|
|
/* Put probe on output source pad (for detecting EOS/STREAM_START/FLUSH) */
|
|
res->output_event_probe_id =
|
|
gst_pad_add_probe (pad,
|
|
GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM | GST_PAD_PROBE_TYPE_QUERY_DOWNSTREAM
|
|
| GST_PAD_PROBE_TYPE_EVENT_FLUSH,
|
|
(GstPadProbeCallback) gst_decodebin_input_stream_src_probe, res, NULL);
|
|
|
|
/* Install a blocking buffer probe */
|
|
res->buffer_probe_id =
|
|
gst_pad_add_probe (pad,
|
|
GST_PAD_PROBE_TYPE_BLOCK | GST_PAD_PROBE_TYPE_BUFFER,
|
|
(GstPadProbeCallback) gst_decodebin_input_stream_buffer_probe, input,
|
|
NULL);
|
|
|
|
SELECTION_LOCK (dbin);
|
|
/* Add to list of current input streams */
|
|
dbin->input_streams = g_list_append (dbin->input_streams, res);
|
|
SELECTION_UNLOCK (dbin);
|
|
GST_DEBUG_OBJECT (pad, "Done creating input stream");
|
|
|
|
return res;
|
|
}
|
|
|
|
/* WITH SELECTION_LOCK TAKEN! */
|
|
static void
|
|
remove_input_stream (GstDecodebin3 * dbin, DecodebinInputStream * stream)
|
|
{
|
|
MultiQueueSlot *slot;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Removing input stream %p %" GST_PTR_FORMAT, stream,
|
|
stream->active_stream);
|
|
|
|
gst_object_replace ((GstObject **) & stream->active_stream, NULL);
|
|
|
|
/* Unlink from slot */
|
|
if (stream->srcpad) {
|
|
GstPad *peer;
|
|
peer = gst_pad_get_peer (stream->srcpad);
|
|
if (peer) {
|
|
gst_pad_unlink (stream->srcpad, peer);
|
|
gst_object_unref (peer);
|
|
}
|
|
if (stream->buffer_probe_id)
|
|
gst_pad_remove_probe (stream->srcpad, stream->buffer_probe_id);
|
|
if (stream->output_event_probe_id)
|
|
gst_pad_remove_probe (stream->srcpad, stream->output_event_probe_id);
|
|
gst_object_unref (stream->srcpad);
|
|
}
|
|
|
|
slot = gst_decodebin_get_slot_for_input_stream_locked (dbin, stream);
|
|
if (slot) {
|
|
slot->pending_stream = NULL;
|
|
slot->input = NULL;
|
|
GST_DEBUG_OBJECT (dbin, "slot %p cleared", slot);
|
|
}
|
|
|
|
dbin->input_streams = g_list_remove (dbin->input_streams, stream);
|
|
|
|
g_free (stream);
|
|
}
|
|
|
|
/** gst_decodebin_input_unblock_streams:
|
|
* @input: A #DecodebinInput
|
|
* @unblock_other_inputs: Whether to also unblock other #DecodebinInput targetting the same #GstStreamCollection
|
|
*
|
|
* Unblock all #DecodebinInputstream for the given @input. If
|
|
* @unblock_other_inputs is TRUE, it will also unblock other #DecodebinInput
|
|
* targetting the same #GstStreamCollection.
|
|
*/
|
|
static void
|
|
gst_decodebin_input_unblock_streams (DecodebinInput * input,
|
|
gboolean unblock_other_inputs)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
GList *tmp, *unused_slot_sinkpads = NULL;
|
|
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"DecodebinInput for %" GST_PTR_FORMAT " , unblock_other_inputs:%d",
|
|
input->parsebin, unblock_other_inputs);
|
|
|
|
/* Re-use existing streams if/when possible */
|
|
GST_FIXME_OBJECT (dbin, "Re-use existing input streams if/when possible");
|
|
|
|
/* Unblock all input streams and link to a slot if needed */
|
|
SELECTION_LOCK (dbin);
|
|
tmp = dbin->input_streams;
|
|
while (tmp != NULL) {
|
|
DecodebinInputStream *input_stream = (DecodebinInputStream *) tmp->data;
|
|
GList *next = tmp->next;
|
|
|
|
if (input_stream->input != input) {
|
|
tmp = next;
|
|
continue;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Checking input stream %p", input_stream);
|
|
|
|
if (!input_stream->active_stream)
|
|
input_stream->active_stream = gst_pad_get_stream (input_stream->srcpad);
|
|
|
|
/* Ensure the stream is linked to a slot */
|
|
gst_decodebin_input_link_to_slot (input_stream);
|
|
|
|
if (input_stream->buffer_probe_id) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Removing pad block on input %p pad %" GST_PTR_FORMAT, input_stream,
|
|
input_stream->srcpad);
|
|
gst_pad_remove_probe (input_stream->srcpad,
|
|
input_stream->buffer_probe_id);
|
|
input_stream->buffer_probe_id = 0;
|
|
}
|
|
|
|
if (input_stream->saw_eos) {
|
|
GST_DEBUG_OBJECT (dbin, "Removing EOS'd stream");
|
|
remove_input_stream (dbin, input_stream);
|
|
tmp = dbin->input_streams;
|
|
} else
|
|
tmp = next;
|
|
}
|
|
|
|
/* Weed out unused multiqueue slots */
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
GST_LOG_OBJECT (dbin, "Slot %d input:%p", slot->id, slot->input);
|
|
if (slot->input == NULL) {
|
|
unused_slot_sinkpads =
|
|
g_list_append (unused_slot_sinkpads, gst_object_ref (slot->sink_pad));
|
|
}
|
|
}
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
if (unused_slot_sinkpads) {
|
|
for (tmp = unused_slot_sinkpads; tmp; tmp = tmp->next) {
|
|
GstPad *sink_pad = (GstPad *) tmp->data;
|
|
GST_DEBUG_OBJECT (sink_pad, "Sending EOS to unused slot");
|
|
gst_pad_send_event (sink_pad, gst_event_new_eos ());
|
|
}
|
|
g_list_free_full (unused_slot_sinkpads, (GDestroyNotify) gst_object_unref);
|
|
}
|
|
|
|
if (unblock_other_inputs) {
|
|
GList *tmp;
|
|
/* If requrested, unblock inputs which are targetting the same collection */
|
|
if (dbin->main_input != input) {
|
|
if (dbin->main_input->collection == input->collection) {
|
|
GST_DEBUG_OBJECT (dbin, "Unblock main input");
|
|
gst_decodebin_input_unblock_streams (dbin->main_input, FALSE);
|
|
}
|
|
}
|
|
for (tmp = dbin->other_inputs; tmp; tmp = tmp->next) {
|
|
DecodebinInput *other = tmp->data;
|
|
if (other->collection == input->collection) {
|
|
GST_DEBUG_OBJECT (dbin, "Unblock other input");
|
|
gst_decodebin_input_unblock_streams (other, FALSE);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
parsebin_pad_added_cb (GstElement * demux, GstPad * pad, DecodebinInput * input)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "New pad %s:%s (input:%p)", GST_DEBUG_PAD_NAME (pad),
|
|
input);
|
|
|
|
gst_decodebin_input_add_stream (input, pad, NULL);
|
|
}
|
|
|
|
/* WITH SELECTION_LOCK TAKEN! */
|
|
static DecodebinInputStream *
|
|
find_input_stream_for_pad (GstDecodebin3 * dbin, GstPad * pad)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = dbin->input_streams; tmp; tmp = tmp->next) {
|
|
DecodebinInputStream *cand = (DecodebinInputStream *) tmp->data;
|
|
if (cand->srcpad == pad)
|
|
return cand;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/* Must be called with the selection lock taken */
|
|
static void
|
|
gst_decodebin3_update_min_interleave (GstDecodebin3 * dbin)
|
|
{
|
|
GstClockTime max_latency = GST_CLOCK_TIME_NONE;
|
|
GList *tmp;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Recalculating max latency of decoders");
|
|
for (tmp = dbin->output_streams; tmp; tmp = tmp->next) {
|
|
DecodebinOutputStream *out = (DecodebinOutputStream *) tmp->data;
|
|
if (GST_CLOCK_TIME_IS_VALID (out->decoder_latency)) {
|
|
if (max_latency == GST_CLOCK_TIME_NONE
|
|
|| out->decoder_latency > max_latency)
|
|
max_latency = out->decoder_latency;
|
|
}
|
|
}
|
|
GST_DEBUG_OBJECT (dbin, "max latency of all decoders: %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (max_latency));
|
|
|
|
if (!GST_CLOCK_TIME_IS_VALID (max_latency))
|
|
return;
|
|
|
|
/* Make sure we keep an extra overhead */
|
|
max_latency += 100 * GST_MSECOND;
|
|
if (max_latency == dbin->current_mq_min_interleave)
|
|
return;
|
|
|
|
dbin->current_mq_min_interleave = max_latency;
|
|
GST_DEBUG_OBJECT (dbin, "Setting mq min-interleave to %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (dbin->current_mq_min_interleave));
|
|
g_object_set (dbin->multiqueue, "min-interleave-time",
|
|
dbin->current_mq_min_interleave, NULL);
|
|
}
|
|
|
|
/** remove_slot_from_streaming_thread:
|
|
* @dbin: A #GstDecodebin3
|
|
* @slot: The #MultiQueueslot to remove
|
|
*
|
|
* Remove a #MultiQueueslot and associated output. Call this when done from a
|
|
* multiqueue streaming thread.
|
|
*
|
|
* Must be called with the SELECTION_LOCK taken.
|
|
*/
|
|
static void
|
|
remove_slot_from_streaming_thread (GstDecodebin3 * dbin, MultiQueueSlot * slot)
|
|
{
|
|
/* if slot is still there and already drained, remove it in here */
|
|
if (slot->output) {
|
|
DecodebinOutputStream *output = slot->output;
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"Multiqueue slot is drained, Remove output stream");
|
|
|
|
dbin->output_streams = g_list_remove (dbin->output_streams, output);
|
|
db_output_stream_free (output);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (slot->src_pad, "No pending pad, Remove multiqueue slot");
|
|
if (slot->probe_id)
|
|
gst_pad_remove_probe (slot->src_pad, slot->probe_id);
|
|
slot->probe_id = 0;
|
|
dbin->slots = g_list_remove (dbin->slots, slot);
|
|
|
|
/* The minimum interleave might have changed, recalculate it */
|
|
gst_decodebin3_update_min_interleave (dbin);
|
|
|
|
gst_element_call_async (GST_ELEMENT_CAST (dbin),
|
|
(GstElementCallAsyncFunc) mq_slot_free, slot, NULL);
|
|
}
|
|
|
|
static void
|
|
parsebin_pad_removed_cb (GstElement * demux, GstPad * pad, DecodebinInput * inp)
|
|
{
|
|
GstDecodebin3 *dbin = inp->dbin;
|
|
DecodebinInputStream *input = NULL;
|
|
MultiQueueSlot *slot;
|
|
|
|
if (!GST_PAD_IS_SRC (pad))
|
|
return;
|
|
|
|
SELECTION_LOCK (dbin);
|
|
|
|
GST_DEBUG_OBJECT (pad, "removed");
|
|
input = find_input_stream_for_pad (dbin, pad);
|
|
|
|
if (input == NULL) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Input stream not found, it was cleaned-up earlier after receiving EOS");
|
|
SELECTION_UNLOCK (dbin);
|
|
return;
|
|
}
|
|
|
|
/* If there are no pending pads, this means we will definitely not need this
|
|
* stream anymore */
|
|
|
|
GST_DEBUG_OBJECT (pad, "Remove input stream %p", input);
|
|
|
|
slot = gst_decodebin_get_slot_for_input_stream_locked (dbin, input);
|
|
remove_input_stream (dbin, input);
|
|
|
|
if (slot && slot->is_drained)
|
|
remove_slot_from_streaming_thread (dbin, slot);
|
|
|
|
SELECTION_UNLOCK (dbin);
|
|
}
|
|
|
|
static gboolean
|
|
parsebin_autoplug_continue_cb (GstElement * parsebin, GstPad * pad,
|
|
GstCaps * caps, GstDecodebin3 * dbin)
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "caps %" GST_PTR_FORMAT, caps);
|
|
|
|
/* If it matches our target caps, expose it */
|
|
if (gst_caps_can_intersect (caps, dbin->caps))
|
|
return FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/** gst_decodebin_input_set_group_id:
|
|
* @input: A #DecodebinInput
|
|
* @group_id: The new group_id received on that input
|
|
*
|
|
* This method should be called whenever a STREAM_START event comes out of a
|
|
* given input (via parsebin or identity).
|
|
*
|
|
* It will update the input group_id if needed, and also compute and update the
|
|
* current_group_id of #GstDecodebin3.
|
|
*
|
|
* Returns: TRUE if the caller shall replace the group_id
|
|
*/
|
|
static gboolean
|
|
gst_decodebin_input_set_group_id (DecodebinInput * input, guint32 * group_id)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
|
|
if (input->group_id != *group_id) {
|
|
if (input->group_id != GST_GROUP_ID_INVALID)
|
|
GST_WARNING_OBJECT (dbin,
|
|
"Group id changed (%" G_GUINT32_FORMAT " -> %" G_GUINT32_FORMAT
|
|
") on input %p ", input->group_id, *group_id, input);
|
|
input->group_id = *group_id;
|
|
}
|
|
|
|
if (*group_id != dbin->current_group_id) {
|
|
/* The input is being re-used with a different incoming stream, we do want
|
|
* to change/unify to this new group-id */
|
|
if (dbin->current_group_id == GST_GROUP_ID_INVALID) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Setting current group id to %" G_GUINT32_FORMAT, *group_id);
|
|
dbin->current_group_id = *group_id;
|
|
} else {
|
|
GST_DEBUG_OBJECT (dbin, "Returning global group id %" G_GUINT32_FORMAT,
|
|
dbin->current_group_id);
|
|
}
|
|
*group_id = dbin->current_group_id;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
parsebin_drained_cb (GstElement * parsebin, DecodebinInput * input)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
gboolean all_drained;
|
|
GList *tmp;
|
|
|
|
GST_INFO_OBJECT (dbin, "input %p drained", input);
|
|
input->drained = TRUE;
|
|
|
|
all_drained = dbin->main_input->drained;
|
|
for (tmp = dbin->other_inputs; tmp; tmp = tmp->next) {
|
|
DecodebinInput *data = (DecodebinInput *) tmp->data;
|
|
|
|
all_drained &= data->drained;
|
|
}
|
|
|
|
if (all_drained) {
|
|
GST_INFO_OBJECT (dbin, "All inputs drained. Posting about-to-finish");
|
|
g_signal_emit (dbin, gst_decodebin3_signals[SIGNAL_ABOUT_TO_FINISH], 0,
|
|
NULL);
|
|
}
|
|
}
|
|
|
|
/** gst_decodebin_input_ensure_parsebin:
|
|
* @input: A #DecodebinInput
|
|
*
|
|
* Ensure the given @input has a parsebin properly setup for it.
|
|
*
|
|
* Returns: TRUE if parsebin could be properly set, else FALSE.
|
|
*/
|
|
/* Call with INPUT_LOCK taken */
|
|
static gboolean
|
|
gst_decodebin_input_ensure_parsebin (DecodebinInput * input)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
gboolean set_state = FALSE;
|
|
|
|
if (input->parsebin == NULL) {
|
|
input->parsebin = gst_element_factory_make ("parsebin", NULL);
|
|
if (input->parsebin == NULL)
|
|
goto no_parsebin;
|
|
input->parsebin = gst_object_ref (input->parsebin);
|
|
input->parsebin_sink = gst_element_get_static_pad (input->parsebin, "sink");
|
|
input->pad_added_sigid =
|
|
g_signal_connect (input->parsebin, "pad-added",
|
|
(GCallback) parsebin_pad_added_cb, input);
|
|
input->pad_removed_sigid =
|
|
g_signal_connect (input->parsebin, "pad-removed",
|
|
(GCallback) parsebin_pad_removed_cb, input);
|
|
input->drained_sigid =
|
|
g_signal_connect (input->parsebin, "drained",
|
|
(GCallback) parsebin_drained_cb, input);
|
|
g_signal_connect (input->parsebin, "autoplug-continue",
|
|
(GCallback) parsebin_autoplug_continue_cb, dbin);
|
|
}
|
|
|
|
if (GST_OBJECT_PARENT (GST_OBJECT (input->parsebin)) != GST_OBJECT (dbin)) {
|
|
/* The state lock is taken so that we ensure we are the one (de)activating
|
|
* parsebin. We need to do this to ensure any activation taking place in
|
|
* parsebin (including by elements doing upstream activation) are done
|
|
* within the same thread. */
|
|
GST_STATE_LOCK (input->parsebin);
|
|
gst_bin_add (GST_BIN (dbin), input->parsebin);
|
|
set_state = TRUE;
|
|
}
|
|
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD (input->ghost_sink),
|
|
input->parsebin_sink);
|
|
|
|
if (set_state) {
|
|
gst_element_sync_state_with_parent (input->parsebin);
|
|
GST_STATE_UNLOCK (input->parsebin);
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_parsebin:
|
|
{
|
|
gst_element_post_message ((GstElement *) dbin,
|
|
gst_missing_element_message_new ((GstElement *) dbin, "parsebin"));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
input_pad_buffer_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
gpointer user_data)
|
|
{
|
|
DecodebinInput *input = user_data;
|
|
|
|
INPUT_LOCK (input->dbin);
|
|
if (!input->parsebin && !input->identity) {
|
|
GST_DEBUG_OBJECT (pad, "Push-stream without caps, setting up identity");
|
|
gst_decodebin_input_ensure_parsebin (input);
|
|
}
|
|
input->input_probe = 0;
|
|
INPUT_UNLOCK (input->dbin);
|
|
|
|
return GST_PAD_PROBE_REMOVE;
|
|
};
|
|
|
|
static GstPadLinkReturn
|
|
gst_decodebin3_input_pad_link (GstPad * pad, GstObject * parent, GstPad * peer)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) parent;
|
|
GstQuery *query;
|
|
gboolean pull_mode = FALSE;
|
|
GstPadLinkReturn res = GST_PAD_LINK_OK;
|
|
DecodebinInput *input = g_object_get_data (G_OBJECT (pad), "decodebin.input");
|
|
|
|
g_return_val_if_fail (input, GST_PAD_LINK_REFUSED);
|
|
|
|
GST_LOG_OBJECT (parent, "Got link on input pad %" GST_PTR_FORMAT, pad);
|
|
|
|
query = gst_query_new_scheduling ();
|
|
if (gst_pad_query (peer, query)
|
|
&& gst_query_has_scheduling_mode_with_flags (query, GST_PAD_MODE_PULL,
|
|
GST_SCHEDULING_FLAG_SEEKABLE))
|
|
pull_mode = TRUE;
|
|
gst_query_unref (query);
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Upstream can do pull-based : %d", pull_mode);
|
|
|
|
/* If upstream *can* do pull-based we always use a parsebin. If not, we will
|
|
* delay that decision to a later stage (caps/stream/collection event
|
|
* processing) to figure out if one is really needed or whether an identity
|
|
* element will be enough */
|
|
INPUT_LOCK (dbin);
|
|
if (pull_mode) {
|
|
if (!gst_decodebin_input_ensure_parsebin (input))
|
|
res = GST_PAD_LINK_REFUSED;
|
|
else if (input->identity) {
|
|
GST_ERROR_OBJECT (dbin,
|
|
"Can't reconfigure input from push-based to pull-based");
|
|
res = GST_PAD_LINK_REFUSED;
|
|
}
|
|
} else if (input->input_probe == 0) {
|
|
/* We setup a buffer probe to handle the corner case of push-based
|
|
* time-based inputs without CAPS/COLLECTION. If we get a buffer without
|
|
* having figured out if we need identity or parsebin, we will plug in
|
|
* parsebin */
|
|
GST_DEBUG_OBJECT (pad, "Setting up buffer probe");
|
|
input->input_probe =
|
|
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_BUFFER,
|
|
input_pad_buffer_probe, input, NULL);
|
|
}
|
|
|
|
/* Clear stream-collection corresponding to current INPUT. We do not
|
|
* recalculate the global one yet, it will be done when at least one
|
|
* collection is received/computed for this input.
|
|
*/
|
|
if (input->collection) {
|
|
GST_DEBUG_OBJECT (pad, "Clearing input collection");
|
|
gst_object_unref (input->collection);
|
|
input->collection = NULL;
|
|
}
|
|
|
|
INPUT_UNLOCK (dbin);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* Drop duration query during _input_pad_unlink */
|
|
static GstPadProbeReturn
|
|
query_duration_drop_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
DecodebinInput * input)
|
|
{
|
|
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
|
|
|
|
if (GST_IS_QUERY (GST_PAD_PROBE_INFO_DATA (info))) {
|
|
GstQuery *query = GST_PAD_PROBE_INFO_QUERY (info);
|
|
if (GST_QUERY_TYPE (query) == GST_QUERY_DURATION) {
|
|
GST_LOG_OBJECT (pad, "stop forwarding query duration");
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* CALL with INPUT LOCK */
|
|
static void
|
|
recalculate_group_id (GstDecodebin3 * dbin)
|
|
{
|
|
guint32 common_group_id;
|
|
GList *iter;
|
|
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"recalculating, current global group_id: %" G_GUINT32_FORMAT,
|
|
dbin->current_group_id);
|
|
|
|
common_group_id = dbin->main_input->group_id;
|
|
|
|
for (iter = dbin->other_inputs; iter; iter = iter->next) {
|
|
DecodebinInput *input = iter->data;
|
|
|
|
if (input->group_id != common_group_id) {
|
|
if (common_group_id != GST_GROUP_ID_INVALID)
|
|
return;
|
|
|
|
common_group_id = input->group_id;
|
|
}
|
|
}
|
|
|
|
if (common_group_id == dbin->current_group_id) {
|
|
GST_DEBUG_OBJECT (dbin, "Global group_id hasn't changed");
|
|
} else {
|
|
GST_DEBUG_OBJECT (dbin, "Updating global group_id to %" G_GUINT32_FORMAT,
|
|
common_group_id);
|
|
dbin->current_group_id = common_group_id;
|
|
}
|
|
}
|
|
|
|
/** gst_decodebin_input_reset_parsebin:
|
|
* @dbin:
|
|
* @input: A #DecodebinInput
|
|
*
|
|
* Reset the parsebin of @input (if any) by resetting all associated variables,
|
|
* inputstreams and elements.
|
|
*
|
|
* Call with INPUT LOCK taken
|
|
*/
|
|
static void
|
|
gst_decodebin_input_reset_parsebin (GstDecodebin3 * dbin,
|
|
DecodebinInput * input)
|
|
{
|
|
GList *iter;
|
|
|
|
if (input->parsebin == NULL)
|
|
return;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Resetting %" GST_PTR_FORMAT, input->parsebin);
|
|
|
|
GST_STATE_LOCK (dbin);
|
|
gst_element_set_state (input->parsebin, GST_STATE_NULL);
|
|
input->drained = FALSE;
|
|
input->group_id = GST_GROUP_ID_INVALID;
|
|
recalculate_group_id (dbin);
|
|
for (iter = dbin->input_streams; iter; iter = iter->next) {
|
|
DecodebinInputStream *istream = iter->data;
|
|
if (istream->input == input)
|
|
istream->saw_eos = TRUE;
|
|
}
|
|
gst_element_sync_state_with_parent (input->parsebin);
|
|
GST_STATE_UNLOCK (dbin);
|
|
}
|
|
|
|
|
|
static void
|
|
gst_decodebin3_input_pad_unlink (GstPad * pad, GstPad * peer,
|
|
DecodebinInput * input)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
|
|
g_return_if_fail (input);
|
|
|
|
GST_LOG_OBJECT (dbin, "Got unlink on input pad %" GST_PTR_FORMAT, pad);
|
|
|
|
INPUT_LOCK (dbin);
|
|
|
|
if (input->parsebin && GST_PAD_MODE (pad) == GST_PAD_MODE_PULL) {
|
|
GST_DEBUG_OBJECT (dbin, "Resetting parsebin since it's pull-based");
|
|
gst_decodebin_input_reset_parsebin (dbin, input);
|
|
}
|
|
|
|
g_list_free_full (input->events_waiting_for_collection,
|
|
(GDestroyNotify) gst_event_unref);
|
|
input->events_waiting_for_collection = NULL;
|
|
|
|
/* In all cases we will be receiving new stream-start and data */
|
|
input->group_id = GST_GROUP_ID_INVALID;
|
|
input->drained = FALSE;
|
|
recalculate_group_id (dbin);
|
|
|
|
INPUT_UNLOCK (dbin);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) element;
|
|
DecodebinInput *input = g_object_get_data (G_OBJECT (pad), "decodebin.input");
|
|
gulong probe_id = 0;
|
|
GstMessage *msg;
|
|
|
|
g_return_if_fail (input);
|
|
GST_LOG_OBJECT (dbin, "Releasing pad %" GST_PTR_FORMAT, pad);
|
|
|
|
INPUT_LOCK (dbin);
|
|
|
|
/* Clear stream-collection corresponding to current INPUT and post new
|
|
* stream-collection message, if needed */
|
|
if (input->collection) {
|
|
gst_object_unref (input->collection);
|
|
input->collection = NULL;
|
|
}
|
|
|
|
msg = handle_stream_collection_locked (dbin, NULL, input);
|
|
|
|
if (msg) {
|
|
if (input->parsebin)
|
|
/* Drop duration queries that the application might be doing while this
|
|
* message is posted */
|
|
probe_id =
|
|
gst_pad_add_probe (input->parsebin_sink,
|
|
GST_PAD_PROBE_TYPE_QUERY_UPSTREAM,
|
|
(GstPadProbeCallback) query_duration_drop_probe, input, NULL);
|
|
|
|
gst_element_post_message (GST_ELEMENT_CAST (dbin), msg);
|
|
|
|
if (input->parsebin) {
|
|
gst_pad_remove_probe (input->parsebin_sink, probe_id);
|
|
}
|
|
}
|
|
|
|
if (!input->is_main) {
|
|
dbin->other_inputs = g_list_remove (dbin->other_inputs, input);
|
|
gst_decodebin_input_free (input);
|
|
} else
|
|
gst_decodebin_input_reset (input);
|
|
|
|
INPUT_UNLOCK (dbin);
|
|
return;
|
|
}
|
|
|
|
/** gst_decodebin_input_reset:
|
|
* @input: The #DecodebinInput to reset
|
|
*
|
|
* Resets the @input for re-used. Call with the INPUT_LOCK.
|
|
*/
|
|
static void
|
|
gst_decodebin_input_reset (DecodebinInput * input)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
|
|
g_return_if_fail (dbin);
|
|
|
|
GST_LOG_OBJECT (dbin, "Resetting input %p", input);
|
|
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD (input->ghost_sink), NULL);
|
|
|
|
if (input->parsebin) {
|
|
g_signal_handler_disconnect (input->parsebin, input->pad_removed_sigid);
|
|
g_signal_handler_disconnect (input->parsebin, input->pad_added_sigid);
|
|
g_signal_handler_disconnect (input->parsebin, input->drained_sigid);
|
|
gst_element_set_state (input->parsebin, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN (dbin), input->parsebin);
|
|
gst_clear_object (&input->parsebin);
|
|
gst_clear_object (&input->parsebin_sink);
|
|
}
|
|
if (input->identity) {
|
|
GstPad *idpad = gst_element_get_static_pad (input->identity, "src");
|
|
DecodebinInputStream *stream;
|
|
|
|
SELECTION_LOCK (dbin);
|
|
stream = find_input_stream_for_pad (dbin, idpad);
|
|
if (stream)
|
|
remove_input_stream (dbin, stream);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
gst_object_unref (idpad);
|
|
|
|
gst_element_set_state (input->identity, GST_STATE_NULL);
|
|
gst_bin_remove (GST_BIN (dbin), input->identity);
|
|
gst_clear_object (&input->identity);
|
|
}
|
|
if (input->collection)
|
|
gst_clear_object (&input->collection);
|
|
|
|
if (input->input_probe) {
|
|
gst_pad_remove_probe (input->ghost_sink, input->input_probe);
|
|
input->input_probe = 0;
|
|
}
|
|
|
|
g_list_free_full (input->events_waiting_for_collection,
|
|
(GDestroyNotify) gst_event_unref);
|
|
input->events_waiting_for_collection = NULL;
|
|
|
|
input->group_id = GST_GROUP_ID_INVALID;
|
|
}
|
|
|
|
/** gst_decodebin_input_free:
|
|
* @input: The #DecodebinInput to free
|
|
*
|
|
* Frees the @input and removes the ghost pad from decodebin
|
|
*
|
|
* Call with INPUT LOCK taken
|
|
*/
|
|
static void
|
|
gst_decodebin_input_free (DecodebinInput * input)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
|
|
g_return_if_fail (dbin);
|
|
|
|
gst_decodebin_input_reset (input);
|
|
|
|
GST_LOG_OBJECT (dbin, "Freeing input %p", input);
|
|
|
|
INPUT_UNLOCK (dbin);
|
|
gst_element_remove_pad (GST_ELEMENT (dbin), input->ghost_sink);
|
|
INPUT_LOCK (dbin);
|
|
|
|
g_free (input);
|
|
}
|
|
|
|
static gboolean
|
|
sink_query_function (GstPad * sinkpad, GstDecodebin3 * dbin, GstQuery * query)
|
|
{
|
|
DecodebinInput *input =
|
|
g_object_get_data (G_OBJECT (sinkpad), "decodebin.input");
|
|
|
|
g_return_val_if_fail (input, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (sinkpad, "query %" GST_PTR_FORMAT, query);
|
|
|
|
/* We accept any caps, since we will reconfigure ourself internally if the new
|
|
* stream is incompatible */
|
|
if (GST_QUERY_TYPE (query) == GST_QUERY_ACCEPT_CAPS) {
|
|
GST_DEBUG_OBJECT (dbin, "Accepting ACCEPT_CAPS query");
|
|
gst_query_set_accept_caps_result (query, TRUE);
|
|
return TRUE;
|
|
}
|
|
return gst_pad_query_default (sinkpad, GST_OBJECT (dbin), query);
|
|
}
|
|
|
|
/** gst_decodebin_input_requires_parsebin:
|
|
* @input: A #DecodebinInput
|
|
* @newcaps: The new incoming #GstCaps
|
|
*
|
|
* Returns: #TRUE if @input requires setting up a `parsebin` element for the
|
|
* incoming stream and @newcaps.
|
|
*/
|
|
static gboolean
|
|
gst_decodebin_input_requires_parsebin (DecodebinInput * input,
|
|
GstCaps * newcaps)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
GstPad *sinkpad = input->ghost_sink;
|
|
gboolean parsebin_needed = TRUE;
|
|
GstStream *stream;
|
|
|
|
stream = gst_pad_get_stream (sinkpad);
|
|
|
|
if (stream == NULL) {
|
|
/* If upstream didn't provide a `GstStream` we will need to create a
|
|
* parsebin to handle that stream */
|
|
GST_DEBUG_OBJECT (sinkpad,
|
|
"Need to create parsebin since upstream doesn't provide GstStream");
|
|
} else if (gst_caps_can_intersect (newcaps, dbin->caps)) {
|
|
/* If the incoming caps match decodebin3 output, no processing is needed */
|
|
GST_FIXME_OBJECT (sinkpad, "parsebin not needed (matches output caps) !");
|
|
parsebin_needed = FALSE;
|
|
} else if (input->input_is_parsed) {
|
|
GST_DEBUG_OBJECT (sinkpad, "input is parsed, no parsebin needed");
|
|
parsebin_needed = FALSE;
|
|
} else {
|
|
GList *decoder_list;
|
|
/* If the incoming caps are compatible with a decoder, we don't need to
|
|
* process it before */
|
|
g_mutex_lock (&dbin->factories_lock);
|
|
gst_decode_bin_update_factories_list (dbin);
|
|
decoder_list =
|
|
gst_element_factory_list_filter (dbin->decoder_factories, newcaps,
|
|
GST_PAD_SINK, TRUE);
|
|
g_mutex_unlock (&dbin->factories_lock);
|
|
if (decoder_list) {
|
|
GST_FIXME_OBJECT (sinkpad, "parsebin not needed (available decoders) !");
|
|
gst_plugin_feature_list_free (decoder_list);
|
|
parsebin_needed = FALSE;
|
|
}
|
|
}
|
|
if (stream)
|
|
gst_object_unref (stream);
|
|
|
|
return parsebin_needed;
|
|
}
|
|
|
|
/** gst_decodebin_input_setup_identity:
|
|
* @input: A #DecodebinInput
|
|
*
|
|
* Sets up @input to receive a single elementary stream with `identity`.
|
|
**/
|
|
static void
|
|
gst_decodebin_input_setup_identity (DecodebinInput * input)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
GstPad *idsrc, *idsink;
|
|
|
|
GST_DEBUG_OBJECT (input->ghost_sink, "Adding identity for new input stream");
|
|
|
|
input->identity = gst_element_factory_make ("identity", NULL);
|
|
/* We drop allocation queries due to our usage of multiqueue just
|
|
* afterwards. It is just too dangerous.
|
|
*
|
|
* If application users want to have optimal raw source <=> sink allocations
|
|
* they should not use decodebin3
|
|
*/
|
|
g_object_set (input->identity, "drop-allocation", TRUE, NULL);
|
|
input->identity = gst_object_ref (input->identity);
|
|
idsink = gst_element_get_static_pad (input->identity, "sink");
|
|
idsrc = gst_element_get_static_pad (input->identity, "src");
|
|
gst_bin_add (GST_BIN (dbin), input->identity);
|
|
|
|
/* Forward any existing GstStream directly on the input stream */
|
|
gst_decodebin_input_add_stream (input, idsrc,
|
|
gst_pad_get_stream (input->ghost_sink));
|
|
|
|
gst_object_unref (idsrc);
|
|
gst_object_unref (idsink);
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD (input->ghost_sink), idsink);
|
|
gst_element_sync_state_with_parent (input->identity);
|
|
}
|
|
|
|
static gboolean
|
|
sink_event_function (GstPad * sinkpad, GstDecodebin3 * dbin, GstEvent * event)
|
|
{
|
|
DecodebinInput *input =
|
|
g_object_get_data (G_OBJECT (sinkpad), "decodebin.input");
|
|
|
|
g_return_val_if_fail (input, FALSE);
|
|
|
|
GST_DEBUG_OBJECT (sinkpad, "event %" GST_PTR_FORMAT, event);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_STREAM_START:
|
|
{
|
|
GstQuery *q = gst_query_new_selectable ();
|
|
const GstStructure *s = gst_event_get_structure (event);
|
|
|
|
/* Query whether upstream can handle stream selection or not */
|
|
if (gst_pad_peer_query (sinkpad, q)) {
|
|
gst_query_parse_selectable (q, &input->upstream_selected);
|
|
GST_DEBUG_OBJECT (sinkpad, "Upstream is selectable : %d",
|
|
input->upstream_selected);
|
|
} else {
|
|
input->upstream_selected = FALSE;
|
|
GST_DEBUG_OBJECT (sinkpad, "Upstream does not handle SELECTABLE query");
|
|
}
|
|
gst_query_unref (q);
|
|
|
|
/* FIXME : We force `decodebin3` to upstream selection mode if *any* of the
|
|
inputs is. This means things might break if there's a mix */
|
|
if (input->upstream_selected)
|
|
dbin->upstream_handles_selection = TRUE;
|
|
|
|
input->input_is_parsed = s
|
|
&& gst_structure_has_field (s, "urisourcebin-parsed-data");
|
|
if (input->input_is_parsed) {
|
|
/* We remove the custom field from stream-start so as not to pollute
|
|
* downstream */
|
|
event = gst_event_make_writable (event);
|
|
s = gst_event_get_structure (event);
|
|
gst_structure_remove_field ((GstStructure *) s,
|
|
"urisourcebin-parsed-data");
|
|
}
|
|
|
|
/* Make sure group ids will be recalculated */
|
|
input->group_id = GST_GROUP_ID_INVALID;
|
|
INPUT_LOCK (dbin);
|
|
recalculate_group_id (dbin);
|
|
INPUT_UNLOCK (dbin);
|
|
break;
|
|
}
|
|
case GST_EVENT_STREAM_COLLECTION:
|
|
{
|
|
GstStreamCollection *collection = NULL;
|
|
|
|
gst_event_parse_stream_collection (event, &collection);
|
|
if (collection) {
|
|
GstMessage *collection_msg;
|
|
|
|
/* If we post a collection, we need to release the input lock, but we
|
|
* want to ensure code that needs to check of validity of the input
|
|
* collection to wait until the message was properly posted so that any
|
|
* synchronous handler can properly set their requested stream
|
|
* selection. */
|
|
INPUT_LOCK (dbin);
|
|
while (dbin->posting_collection)
|
|
g_cond_wait (&dbin->posting_cond, &dbin->input_lock);
|
|
collection_msg =
|
|
handle_stream_collection_locked (dbin, collection, input);
|
|
gst_object_unref (collection);
|
|
if (collection_msg) {
|
|
GST_DEBUG_OBJECT (sinkpad, "Posting collection");
|
|
dbin->posting_collection = TRUE;
|
|
INPUT_UNLOCK (dbin);
|
|
gst_element_post_message (GST_ELEMENT_CAST (dbin), collection_msg);
|
|
INPUT_LOCK (dbin);
|
|
dbin->posting_collection = FALSE;
|
|
GST_DEBUG_OBJECT (sinkpad, "Done posting collection");
|
|
g_cond_broadcast (&dbin->posting_cond);
|
|
}
|
|
INPUT_UNLOCK (dbin);
|
|
}
|
|
|
|
/* If we are waiting to create an identity passthrough, do it now */
|
|
if (!input->parsebin && !input->identity)
|
|
gst_decodebin_input_setup_identity (input);
|
|
|
|
/* Remove buffer probe for caps/collection detection */
|
|
if (input->input_probe) {
|
|
gst_pad_remove_probe (sinkpad, input->input_probe);
|
|
input->input_probe = 0;
|
|
}
|
|
|
|
/* Drain all pending events */
|
|
if (input->events_waiting_for_collection) {
|
|
GST_DEBUG_OBJECT (sinkpad, "Draining pending events");
|
|
GList *tmp;
|
|
for (tmp = input->events_waiting_for_collection; tmp; tmp = tmp->next)
|
|
gst_pad_event_default (sinkpad, GST_OBJECT (dbin), tmp->data);
|
|
g_list_free (input->events_waiting_for_collection);
|
|
input->events_waiting_for_collection = NULL;
|
|
}
|
|
break;
|
|
}
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *newcaps = NULL;
|
|
|
|
gst_event_parse_caps (event, &newcaps);
|
|
if (!newcaps)
|
|
break;
|
|
GST_DEBUG_OBJECT (sinkpad, "new caps %" GST_PTR_FORMAT, newcaps);
|
|
|
|
/* Remove buffer probe for caps/collection detection */
|
|
if (input->input_probe) {
|
|
gst_pad_remove_probe (sinkpad, input->input_probe);
|
|
input->input_probe = 0;
|
|
}
|
|
|
|
/* No parsebin or identity present, check if we can avoid creating one */
|
|
if (!input->parsebin && !input->identity) {
|
|
if (gst_decodebin_input_requires_parsebin (input, newcaps)) {
|
|
GST_DEBUG_OBJECT (sinkpad, "parsebin is required for input");
|
|
INPUT_LOCK (dbin);
|
|
gst_decodebin_input_ensure_parsebin (input);
|
|
INPUT_UNLOCK (dbin);
|
|
break;
|
|
}
|
|
GST_DEBUG_OBJECT (sinkpad,
|
|
"parsebin not required. Will create identity passthrough element once we get the collection");
|
|
break;
|
|
}
|
|
|
|
if (input->identity) {
|
|
if (gst_decodebin_input_requires_parsebin (input, newcaps)) {
|
|
GST_ERROR_OBJECT (sinkpad,
|
|
"Switching from passthrough to parsebin on inputs is not supported !");
|
|
gst_event_unref (event);
|
|
return FALSE;
|
|
}
|
|
/* Nothing else to do here */
|
|
break;
|
|
}
|
|
|
|
/* Check if the parsebin present can handle the new caps */
|
|
g_assert (input->parsebin);
|
|
GST_DEBUG_OBJECT (sinkpad,
|
|
"New caps, checking if they are compatible with existing parsebin");
|
|
if (!gst_pad_query_accept_caps (input->parsebin_sink, newcaps)) {
|
|
GST_DEBUG_OBJECT (sinkpad,
|
|
"Parsebin doesn't accept the new caps %" GST_PTR_FORMAT, newcaps);
|
|
/* Reset parsebin so that it reconfigures itself for the new stream format */
|
|
INPUT_LOCK (dbin);
|
|
gst_decodebin_input_reset_parsebin (dbin, input);
|
|
INPUT_UNLOCK (dbin);
|
|
} else {
|
|
GST_DEBUG_OBJECT (sinkpad, "Parsebin accepts new caps");
|
|
}
|
|
break;
|
|
}
|
|
case GST_EVENT_SEGMENT:
|
|
{
|
|
const GstSegment *segment = NULL;
|
|
gst_event_parse_segment (event, &segment);
|
|
|
|
/* All data reaching multiqueue must be in time format. If it's not, we
|
|
* need to use a parsebin on the incoming stream.
|
|
*/
|
|
if (segment && segment->format != GST_FORMAT_TIME && !input->parsebin) {
|
|
GST_DEBUG_OBJECT (sinkpad,
|
|
"Got a non-time segment, forcing parsebin handling");
|
|
INPUT_LOCK (dbin);
|
|
gst_decodebin_input_ensure_parsebin (input);
|
|
INPUT_UNLOCK (dbin);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* For parsed inputs, if we are waiting for a collection event, store them for
|
|
* now */
|
|
if (input->input_is_parsed) {
|
|
gboolean have_collection;
|
|
INPUT_LOCK (dbin);
|
|
while (dbin->posting_collection) {
|
|
g_cond_wait (&dbin->posting_cond, &dbin->input_lock);
|
|
}
|
|
have_collection = (input->collection != NULL);
|
|
INPUT_UNLOCK (dbin);
|
|
if (!have_collection) {
|
|
GST_DEBUG_OBJECT (sinkpad,
|
|
"Postponing event until we get a stream collection");
|
|
input->events_waiting_for_collection =
|
|
g_list_append (input->events_waiting_for_collection, event);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* Chain to parent function */
|
|
return gst_pad_event_default (sinkpad, GST_OBJECT (dbin), event);
|
|
}
|
|
|
|
/** gst_decodebin_input_new:
|
|
* @dbin: The decodebin instance
|
|
* @main: Whether this is the main input (for the static "sink" sinkpad) or not
|
|
*
|
|
* Returns: A new #DecodebinInput
|
|
*/
|
|
static DecodebinInput *
|
|
gst_decodebin_input_new (GstDecodebin3 * dbin, gboolean main)
|
|
{
|
|
DecodebinInput *input;
|
|
|
|
input = g_new0 (DecodebinInput, 1);
|
|
input->dbin = dbin;
|
|
input->is_main = main;
|
|
input->group_id = GST_GROUP_ID_INVALID;
|
|
if (main)
|
|
input->ghost_sink = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
|
|
else {
|
|
gchar *pad_name = g_strdup_printf ("sink_%u", dbin->input_counter++);
|
|
input->ghost_sink = gst_ghost_pad_new_no_target (pad_name, GST_PAD_SINK);
|
|
g_free (pad_name);
|
|
}
|
|
input->upstream_selected = FALSE;
|
|
g_object_set_data (G_OBJECT (input->ghost_sink), "decodebin.input", input);
|
|
gst_pad_set_event_function (input->ghost_sink,
|
|
(GstPadEventFunction) sink_event_function);
|
|
gst_pad_set_query_function (input->ghost_sink,
|
|
(GstPadQueryFunction) sink_query_function);
|
|
gst_pad_set_link_function (input->ghost_sink, gst_decodebin3_input_pad_link);
|
|
g_signal_connect (input->ghost_sink, "unlinked",
|
|
(GCallback) gst_decodebin3_input_pad_unlink, input);
|
|
|
|
gst_pad_set_active (input->ghost_sink, TRUE);
|
|
gst_element_add_pad ((GstElement *) dbin, input->ghost_sink);
|
|
|
|
return input;
|
|
|
|
}
|
|
|
|
static GstPad *
|
|
gst_decodebin3_request_new_pad (GstElement * element, GstPadTemplate * temp,
|
|
const gchar * name, const GstCaps * caps)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) element;
|
|
DecodebinInput *input;
|
|
GstPad *res = NULL;
|
|
|
|
/* We are ignoring names for the time being, not sure it makes any sense
|
|
* within the context of decodebin3 ... */
|
|
input = gst_decodebin_input_new (dbin, FALSE);
|
|
if (input) {
|
|
INPUT_LOCK (dbin);
|
|
dbin->other_inputs = g_list_append (dbin->other_inputs, input);
|
|
res = input->ghost_sink;
|
|
INPUT_UNLOCK (dbin);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
/* Must be called with factories lock! */
|
|
static void
|
|
gst_decode_bin_update_factories_list (GstDecodebin3 * dbin)
|
|
{
|
|
guint cookie;
|
|
|
|
cookie = gst_registry_get_feature_list_cookie (gst_registry_get ());
|
|
if (!dbin->factories || dbin->factories_cookie != cookie) {
|
|
GList *tmp;
|
|
if (dbin->factories)
|
|
gst_plugin_feature_list_free (dbin->factories);
|
|
if (dbin->decoder_factories)
|
|
g_list_free (dbin->decoder_factories);
|
|
if (dbin->decodable_factories)
|
|
g_list_free (dbin->decodable_factories);
|
|
dbin->factories =
|
|
gst_element_factory_list_get_elements
|
|
(GST_ELEMENT_FACTORY_TYPE_DECODABLE, GST_RANK_MARGINAL);
|
|
dbin->factories =
|
|
g_list_sort (dbin->factories, gst_plugin_feature_rank_compare_func);
|
|
dbin->factories_cookie = cookie;
|
|
|
|
/* Filter decoder and other decodables */
|
|
dbin->decoder_factories = NULL;
|
|
dbin->decodable_factories = NULL;
|
|
for (tmp = dbin->factories; tmp; tmp = tmp->next) {
|
|
GstElementFactory *fact = (GstElementFactory *) tmp->data;
|
|
if (gst_element_factory_list_is_type (fact,
|
|
GST_ELEMENT_FACTORY_TYPE_DECODER))
|
|
dbin->decoder_factories = g_list_append (dbin->decoder_factories, fact);
|
|
else
|
|
dbin->decodable_factories =
|
|
g_list_append (dbin->decodable_factories, fact);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Must be called with appropriate lock if list is a protected variable */
|
|
static const gchar *
|
|
stream_in_list (GList * list, const gchar * sid)
|
|
{
|
|
GList *tmp;
|
|
|
|
#if EXTRA_DEBUG
|
|
for (tmp = list; tmp; tmp = tmp->next) {
|
|
gchar *osid = (gchar *) tmp->data;
|
|
GST_DEBUG ("Checking %s against %s", sid, osid);
|
|
}
|
|
#endif
|
|
|
|
for (tmp = list; tmp; tmp = tmp->next) {
|
|
const gchar *osid = (gchar *) tmp->data;
|
|
if (!g_strcmp0 (sid, osid))
|
|
return osid;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static GList *
|
|
remove_from_list (GList * list, const gchar * sid)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = list; tmp; tmp = tmp->next) {
|
|
gchar *osid = tmp->data;
|
|
if (!g_strcmp0 (sid, osid)) {
|
|
g_free (osid);
|
|
return g_list_delete_link (list, tmp);
|
|
}
|
|
}
|
|
return list;
|
|
}
|
|
|
|
/* Called with SELECTION_LOCK */
|
|
static gboolean
|
|
stream_is_active (GstDecodebin3 * dbin, const gchar * stream_id)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = tmp->data;
|
|
if (slot->output && !g_strcmp0 (stream_id, slot->active_stream_id))
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Called with SELECTION_LOCK */
|
|
static gboolean
|
|
stream_is_requested (GstDecodebin3 * dbin, const gchar * stream_id)
|
|
{
|
|
if (dbin->output_collection == NULL)
|
|
return FALSE;
|
|
return stream_in_list (dbin->output_collection->requested_selection,
|
|
stream_id) != NULL;
|
|
}
|
|
|
|
/** update_requested_selection:
|
|
* @dbin: A #GstDecodebin3
|
|
* @new_collection: The #DecodebinCollection to update
|
|
*
|
|
* Figures out the selection to use for @new_collection. Will figure this out
|
|
* based on signals and current output collection.
|
|
*
|
|
* This function should be called once we start seeing a #DecodebinCollection on
|
|
* the output of multiqueue.
|
|
*
|
|
* Must be called with the SELECTION_LOCK taken
|
|
*/
|
|
static void
|
|
update_requested_selection (GstDecodebin3 * dbin,
|
|
DecodebinCollection * new_collection)
|
|
{
|
|
guint i, nb;
|
|
GList *tmp = NULL;
|
|
gboolean all_user_selected = TRUE;
|
|
GstStreamType used_types = 0;
|
|
|
|
if (new_collection->requested_selection) {
|
|
GST_DEBUG_OBJECT (dbin, "Collection already has a selection");
|
|
return;
|
|
}
|
|
|
|
nb = gst_stream_collection_get_size (new_collection->collection);
|
|
|
|
/* 3. If not, check if we already have some of the streams in the
|
|
* existing active/requested selection */
|
|
for (i = 0; i < nb; i++) {
|
|
GstStream *stream =
|
|
gst_stream_collection_get_stream (new_collection->collection, i);
|
|
const gchar *sid = gst_stream_get_stream_id (stream);
|
|
gint request = -1;
|
|
/* Fire select-stream signal to see if outside components want to
|
|
* hint at which streams should be selected */
|
|
g_signal_emit (G_OBJECT (dbin),
|
|
gst_decodebin3_signals[SIGNAL_SELECT_STREAM], 0,
|
|
new_collection->collection, stream, &request);
|
|
GST_DEBUG_OBJECT (dbin, "stream %s , request:%d", sid, request);
|
|
|
|
if (request == -1)
|
|
all_user_selected = FALSE;
|
|
if (request == 1 || (request == -1 && (stream_is_requested (dbin, sid)
|
|
|| stream_is_active (dbin, sid)))) {
|
|
GstStreamType curtype = gst_stream_get_stream_type (stream);
|
|
if (request == 1)
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Using stream requested by 'select-stream' signal : %s", sid);
|
|
else
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Re-using stream already present in requested or active selection : %s",
|
|
sid);
|
|
tmp = g_list_append (tmp, (gchar *) sid);
|
|
used_types |= curtype;
|
|
}
|
|
}
|
|
|
|
/* 4. If the user didn't explicitly selected all streams, match one stream of each type */
|
|
if (!all_user_selected && new_collection->seqnum == GST_SEQNUM_INVALID) {
|
|
for (i = 0; i < nb; i++) {
|
|
GstStream *stream =
|
|
gst_stream_collection_get_stream (new_collection->collection, i);
|
|
GstStreamType curtype = gst_stream_get_stream_type (stream);
|
|
if (curtype != GST_STREAM_TYPE_UNKNOWN && !(used_types & curtype)) {
|
|
const gchar *sid = gst_stream_get_stream_id (stream);
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Automatically selecting stream '%s' of type %s", sid,
|
|
gst_stream_type_get_name (curtype));
|
|
tmp = g_list_append (tmp, (gchar *) sid);
|
|
used_types |= curtype;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (tmp) {
|
|
/* Finally set the requested selection */
|
|
new_collection->requested_selection =
|
|
g_list_copy_deep (tmp, (GCopyFunc) g_strdup, NULL);
|
|
new_collection->posted_streams_selected_msg = FALSE;
|
|
g_list_free (tmp);
|
|
}
|
|
}
|
|
|
|
/* sort_streams:
|
|
* GCompareFunc to use with lists of GstStream.
|
|
* Sorts GstStreams by stream type and SELECT flag and stream-id
|
|
* First video, then audio, then others.
|
|
*
|
|
* Return: negative if a<b, 0 if a==b, positive if a>b
|
|
*/
|
|
static gint
|
|
sort_streams (GstStream * sa, GstStream * sb)
|
|
{
|
|
GstStreamType typea, typeb;
|
|
GstStreamFlags flaga, flagb;
|
|
const gchar *ida, *idb;
|
|
gint ret = 0;
|
|
|
|
typea = gst_stream_get_stream_type (sa);
|
|
typeb = gst_stream_get_stream_type (sb);
|
|
|
|
GST_LOG ("sa(%s), sb(%s)", gst_stream_get_stream_id (sa),
|
|
gst_stream_get_stream_id (sb));
|
|
|
|
/* Sort by stream type. First video, then audio, then others(text, container, unknown) */
|
|
if (typea != typeb) {
|
|
if (typea & GST_STREAM_TYPE_VIDEO)
|
|
ret = -1;
|
|
else if (typea & GST_STREAM_TYPE_AUDIO)
|
|
ret = (!(typeb & GST_STREAM_TYPE_VIDEO)) ? -1 : 1;
|
|
else if (typea & GST_STREAM_TYPE_TEXT)
|
|
ret = (!(typeb & GST_STREAM_TYPE_VIDEO)
|
|
&& !(typeb & GST_STREAM_TYPE_AUDIO)) ? -1 : 1;
|
|
else if (typea & GST_STREAM_TYPE_CONTAINER)
|
|
ret = (typeb & GST_STREAM_TYPE_UNKNOWN) ? -1 : 1;
|
|
else
|
|
ret = 1;
|
|
|
|
if (ret != 0) {
|
|
GST_LOG ("Sort by stream-type: %d", ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Sort by SELECT flag, if stream type is same. */
|
|
flaga = gst_stream_get_stream_flags (sa);
|
|
flagb = gst_stream_get_stream_flags (sb);
|
|
|
|
ret =
|
|
(flaga & GST_STREAM_FLAG_SELECT) ? ((flagb & GST_STREAM_FLAG_SELECT) ? 0 :
|
|
-1) : ((flagb & GST_STREAM_FLAG_SELECT) ? 1 : 0);
|
|
|
|
if (ret != 0) {
|
|
GST_LOG ("Sort by SELECT flag: %d", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Sort by stream-id, if otherwise the same. */
|
|
ida = gst_stream_get_stream_id (sa);
|
|
idb = gst_stream_get_stream_id (sb);
|
|
ret = g_strcmp0 (ida, idb);
|
|
|
|
GST_LOG ("Sort by stream-id: %d", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Call with INPUT_LOCK taken */
|
|
static GstStreamCollection *
|
|
get_merged_collection (GstDecodebin3 * dbin)
|
|
{
|
|
gboolean needs_merge = FALSE;
|
|
GstStreamCollection *res = NULL;
|
|
GList *tmp;
|
|
GList *unsorted_streams = NULL;
|
|
guint i, nb_stream;
|
|
|
|
/* First check if we need to do a merge or just return the only collection */
|
|
res = dbin->main_input->collection;
|
|
|
|
for (tmp = dbin->other_inputs; tmp; tmp = tmp->next) {
|
|
DecodebinInput *input = (DecodebinInput *) tmp->data;
|
|
GST_LOG_OBJECT (dbin, "Comparing res %p input->collection %p", res,
|
|
input->collection);
|
|
if (input->collection && input->collection != res) {
|
|
if (res) {
|
|
needs_merge = TRUE;
|
|
break;
|
|
}
|
|
res = input->collection;
|
|
}
|
|
}
|
|
|
|
if (!needs_merge) {
|
|
GST_DEBUG_OBJECT (dbin, "No need to merge, returning %p", res);
|
|
return res ? gst_object_ref (res) : NULL;
|
|
}
|
|
|
|
/* We really need to create a new collection */
|
|
/* FIXME : Some numbering scheme maybe ?? */
|
|
res = gst_stream_collection_new ("decodebin3");
|
|
if (dbin->main_input->collection) {
|
|
nb_stream = gst_stream_collection_get_size (dbin->main_input->collection);
|
|
GST_DEBUG_OBJECT (dbin, "main input %p %d", dbin->main_input, nb_stream);
|
|
for (i = 0; i < nb_stream; i++) {
|
|
GstStream *stream =
|
|
gst_stream_collection_get_stream (dbin->main_input->collection, i);
|
|
unsorted_streams = g_list_append (unsorted_streams, stream);
|
|
}
|
|
}
|
|
|
|
for (tmp = dbin->other_inputs; tmp; tmp = tmp->next) {
|
|
DecodebinInput *input = (DecodebinInput *) tmp->data;
|
|
GST_DEBUG_OBJECT (dbin, "input %p , collection %p", input,
|
|
input->collection);
|
|
if (input->collection) {
|
|
nb_stream = gst_stream_collection_get_size (input->collection);
|
|
GST_DEBUG_OBJECT (dbin, "nb_stream : %d", nb_stream);
|
|
for (i = 0; i < nb_stream; i++) {
|
|
GstStream *stream =
|
|
gst_stream_collection_get_stream (input->collection, i);
|
|
/* Only add if not already present in the list */
|
|
if (!g_list_find (unsorted_streams, stream))
|
|
unsorted_streams = g_list_append (unsorted_streams, stream);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* re-order streams : video, then audio, then others */
|
|
unsorted_streams =
|
|
g_list_sort (unsorted_streams, (GCompareFunc) sort_streams);
|
|
for (tmp = unsorted_streams; tmp; tmp = tmp->next) {
|
|
GstStream *stream = (GstStream *) tmp->data;
|
|
GST_DEBUG_OBJECT (dbin, "Adding #stream(%s) to collection",
|
|
gst_stream_get_stream_id (stream));
|
|
gst_stream_collection_add_stream (res, gst_object_ref (stream));
|
|
}
|
|
|
|
if (unsorted_streams)
|
|
g_list_free (unsorted_streams);
|
|
|
|
return res;
|
|
}
|
|
|
|
/* Call with INPUT_LOCK taken */
|
|
static DecodebinInput *
|
|
find_message_parsebin (GstDecodebin3 * dbin, GstElement * child)
|
|
{
|
|
DecodebinInput *input = NULL;
|
|
GstElement *parent = gst_object_ref (child);
|
|
GList *tmp;
|
|
|
|
do {
|
|
GstElement *next_parent;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "parent %s",
|
|
parent ? GST_ELEMENT_NAME (parent) : "<NONE>");
|
|
|
|
if (parent == dbin->main_input->parsebin) {
|
|
input = dbin->main_input;
|
|
break;
|
|
}
|
|
for (tmp = dbin->other_inputs; tmp; tmp = tmp->next) {
|
|
DecodebinInput *cur = (DecodebinInput *) tmp->data;
|
|
if (parent == cur->parsebin) {
|
|
input = cur;
|
|
break;
|
|
}
|
|
}
|
|
next_parent = (GstElement *) gst_element_get_parent (parent);
|
|
gst_object_unref (parent);
|
|
parent = next_parent;
|
|
|
|
} while (parent && parent != (GstElement *) dbin);
|
|
|
|
if (parent)
|
|
gst_object_unref (parent);
|
|
|
|
return input;
|
|
}
|
|
|
|
static const gchar *
|
|
stream_in_collection (GstStreamCollection * collection, gchar * sid)
|
|
{
|
|
guint i, len;
|
|
|
|
if (collection == NULL)
|
|
return NULL;
|
|
len = gst_stream_collection_get_size (collection);
|
|
for (i = 0; i < len; i++) {
|
|
GstStream *stream = gst_stream_collection_get_stream (collection, i);
|
|
const gchar *osid = gst_stream_get_stream_id (stream);
|
|
if (!g_strcmp0 (sid, osid))
|
|
return osid;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static DecodebinCollection *
|
|
find_collection_for_stream (GstDecodebin3 * dbin, gchar * stream_id)
|
|
{
|
|
GList *tmp;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "stream_id `%s`", stream_id);
|
|
|
|
/* Recursively find the collection to which this stream belongs */
|
|
for (tmp = dbin->collections; tmp; tmp = tmp->next) {
|
|
DecodebinCollection *collection = tmp->data;
|
|
GST_DEBUG_OBJECT (dbin, "Trying on DBCollection %p", collection);
|
|
if (stream_in_collection (collection->collection, stream_id))
|
|
return collection;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static gboolean
|
|
are_all_streams_in_collection (GstStreamCollection * collection,
|
|
GList * streams)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = streams; tmp; tmp = tmp->next) {
|
|
if (!stream_in_collection (collection, tmp->data))
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
db_collection_free (DecodebinCollection * collection)
|
|
{
|
|
GST_DEBUG ("Freeing collection %p for %" GST_PTR_FORMAT, collection,
|
|
collection->collection);
|
|
gst_object_unref (collection->collection);
|
|
g_list_free_full (collection->requested_selection, g_free);
|
|
g_list_free (collection->to_activate);
|
|
|
|
g_free (collection);
|
|
}
|
|
|
|
static DecodebinCollection *
|
|
db_collection_new (GstStreamCollection * collection)
|
|
{
|
|
DecodebinCollection *db_collection = g_new0 (DecodebinCollection, 1);
|
|
|
|
db_collection->collection = collection;
|
|
db_collection->seqnum = GST_SEQNUM_INVALID;
|
|
|
|
GST_DEBUG ("Created new collection %p for %" GST_PTR_FORMAT, db_collection,
|
|
collection);
|
|
|
|
return db_collection;
|
|
}
|
|
|
|
static gboolean
|
|
collections_are_identical (GstStreamCollection * collection,
|
|
GstStreamCollection * previous)
|
|
{
|
|
guint i;
|
|
|
|
if (collection == previous)
|
|
return TRUE;
|
|
|
|
if (gst_stream_collection_get_size (collection) !=
|
|
gst_stream_collection_get_size (previous))
|
|
return FALSE;
|
|
|
|
for (i = 0; i < gst_stream_collection_get_size (previous); i++) {
|
|
GstStream *stream = gst_stream_collection_get_stream (previous, i);
|
|
const gchar *sid = gst_stream_get_stream_id (stream);
|
|
if (!stream_in_collection (collection, (gchar *) sid))
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/** handle_stream_collection_locked:
|
|
* @dbin:
|
|
* @collection: (transfer none): The new collection for @input. Can be %NULL.
|
|
* @input: The #DecodebinInput
|
|
*
|
|
* Called with INPUT_LOCK taken.
|
|
*
|
|
* Handle a new (or updated) @collection for the given @input. If this results
|
|
* in a different collection, the appropriate GST_MESSAGE_STREAM_COLLECTION to
|
|
* be posted will be returned.
|
|
*
|
|
* Returns: A #GstMessage to be posted on the bus if a new collection was
|
|
* generated, else %NULL.
|
|
*/
|
|
static GstMessage *
|
|
handle_stream_collection_locked (GstDecodebin3 * dbin,
|
|
GstStreamCollection * collection, DecodebinInput * input)
|
|
{
|
|
GstMessage *message = NULL;
|
|
gboolean is_update = FALSE;
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
const gchar *upstream_id;
|
|
guint i;
|
|
#endif
|
|
if (!input) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Couldn't find corresponding input, most likely shutting down");
|
|
return NULL;
|
|
}
|
|
|
|
/* Replace collection in input */
|
|
if (input->collection)
|
|
gst_object_unref (input->collection);
|
|
if (collection)
|
|
input->collection = gst_object_ref (collection);
|
|
GST_DEBUG_OBJECT (dbin, "Setting collection %p on input %p", collection,
|
|
input);
|
|
|
|
/* Merge collection if needed */
|
|
collection = get_merged_collection (dbin);
|
|
if (!collection)
|
|
return NULL;
|
|
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
/* Just some debugging */
|
|
upstream_id = gst_stream_collection_get_upstream_id (collection);
|
|
GST_DEBUG ("Received Stream Collection. Upstream_id : %s", upstream_id);
|
|
GST_DEBUG ("From input %p", input);
|
|
GST_DEBUG (" %d streams", gst_stream_collection_get_size (collection));
|
|
for (i = 0; i < gst_stream_collection_get_size (collection); i++) {
|
|
GstStream *stream = gst_stream_collection_get_stream (collection, i);
|
|
GstTagList *taglist;
|
|
GstCaps *caps;
|
|
|
|
GST_DEBUG (" Stream '%s'", gst_stream_get_stream_id (stream));
|
|
GST_DEBUG (" type : %s",
|
|
gst_stream_type_get_name (gst_stream_get_stream_type (stream)));
|
|
GST_DEBUG (" flags : 0x%x", gst_stream_get_stream_flags (stream));
|
|
taglist = gst_stream_get_tags (stream);
|
|
GST_DEBUG (" tags : %" GST_PTR_FORMAT, taglist);
|
|
caps = gst_stream_get_caps (stream);
|
|
GST_DEBUG (" caps : %" GST_PTR_FORMAT, caps);
|
|
if (taglist)
|
|
gst_tag_list_unref (taglist);
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
}
|
|
#endif
|
|
|
|
SELECTION_LOCK (dbin);
|
|
/* If collection is same as current input collection, leave */
|
|
if (dbin->input_collection) {
|
|
GstStreamCollection *previous = dbin->input_collection->collection;
|
|
|
|
if (collections_are_identical (collection, previous)) {
|
|
GST_DEBUG_OBJECT (dbin, "Collection didn't change");
|
|
gst_object_unref (collection);
|
|
SELECTION_UNLOCK (dbin);
|
|
return NULL;
|
|
}
|
|
|
|
/* Check if this collection is an update of the previous one */
|
|
if (gst_stream_collection_get_size (collection) >
|
|
gst_stream_collection_get_size (previous)) {
|
|
guint i;
|
|
is_update = TRUE;
|
|
for (i = 0; i < gst_stream_collection_get_size (previous); i++) {
|
|
GstStream *stream = gst_stream_collection_get_stream (previous, i);
|
|
const gchar *sid = gst_stream_get_stream_id (stream);
|
|
if (!stream_in_collection (collection, (gchar *) sid)) {
|
|
is_update = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* We have a new collection, store it */
|
|
GST_DEBUG_OBJECT (dbin, "Switching to new input collection (is_update:%d)",
|
|
is_update);
|
|
dbin->input_collection = db_collection_new (collection);
|
|
dbin->input_collection->is_update = is_update;
|
|
dbin->collections = g_list_append (dbin->collections, dbin->input_collection);
|
|
message = gst_message_new_stream_collection ((GstObject *) dbin, collection);
|
|
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
return message;
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_handle_message (GstBin * bin, GstMessage * message)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) bin;
|
|
GList *l;
|
|
|
|
GST_DEBUG_OBJECT (bin, "Got Message %s", GST_MESSAGE_TYPE_NAME (message));
|
|
|
|
GST_OBJECT_LOCK (dbin);
|
|
for (l = dbin->candidate_decoders; l; l = l->next) {
|
|
CandidateDecoder *candidate = l->data;
|
|
if (GST_OBJECT_CAST (candidate->element) == GST_MESSAGE_SRC (message)) {
|
|
if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_ERROR) {
|
|
if (candidate->error)
|
|
gst_message_unref (candidate->error);
|
|
candidate->error = message;
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
return;
|
|
} else if (GST_MESSAGE_TYPE (message) == GST_MESSAGE_LATENCY) {
|
|
if (candidate->latency)
|
|
gst_message_unref (candidate->latency);
|
|
GST_DEBUG_OBJECT (bin, "store latency message for %" GST_PTR_FORMAT,
|
|
candidate->element);
|
|
candidate->latency = message;
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
|
|
switch (GST_MESSAGE_TYPE (message)) {
|
|
case GST_MESSAGE_STREAM_COLLECTION:
|
|
{
|
|
GstStreamCollection *collection = NULL;
|
|
DecodebinInput *input;
|
|
GstMessage *collection_message;
|
|
|
|
INPUT_LOCK (dbin);
|
|
input =
|
|
find_message_parsebin (dbin,
|
|
(GstElement *) GST_MESSAGE_SRC (message));
|
|
if (input == NULL) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Couldn't find corresponding input, most likely shutting down");
|
|
INPUT_UNLOCK (dbin);
|
|
break;
|
|
}
|
|
if (input->upstream_selected) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Upstream handles selection, not using/forwarding collection");
|
|
INPUT_UNLOCK (dbin);
|
|
goto drop_message;
|
|
}
|
|
gst_message_parse_stream_collection (message, &collection);
|
|
if (!collection) {
|
|
INPUT_UNLOCK (dbin);
|
|
break;
|
|
}
|
|
|
|
collection_message =
|
|
handle_stream_collection_locked (dbin, collection, input);
|
|
INPUT_UNLOCK (dbin);
|
|
|
|
if (collection_message) {
|
|
gst_message_unref (message);
|
|
message = collection_message;
|
|
}
|
|
gst_object_unref (collection);
|
|
break;
|
|
}
|
|
case GST_MESSAGE_LATENCY:
|
|
{
|
|
GList *tmp;
|
|
/* Check if this is from one of our decoders */
|
|
SELECTION_LOCK (dbin);
|
|
for (tmp = dbin->output_streams; tmp; tmp = tmp->next) {
|
|
DecodebinOutputStream *out = (DecodebinOutputStream *) tmp->data;
|
|
if (out->decoder == (GstElement *) GST_MESSAGE_SRC (message)) {
|
|
GstClockTime min, max;
|
|
if (GST_IS_VIDEO_DECODER (out->decoder)) {
|
|
gst_video_decoder_get_latency (GST_VIDEO_DECODER (out->decoder),
|
|
&min, &max);
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Got latency update from one of our decoders. min: %"
|
|
GST_TIME_FORMAT " max: %" GST_TIME_FORMAT, GST_TIME_ARGS (min),
|
|
GST_TIME_ARGS (max));
|
|
out->decoder_latency = min;
|
|
/* Trigger recalculation */
|
|
gst_decodebin3_update_min_interleave (dbin);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
SELECTION_UNLOCK (dbin);
|
|
}
|
|
case GST_MESSAGE_WARNING:
|
|
case GST_MESSAGE_ERROR:
|
|
case GST_MESSAGE_INFO:
|
|
{
|
|
GList *tmp;
|
|
/* Add the relevant stream-id if the message comes from a decoder */
|
|
for (tmp = dbin->output_streams; tmp; tmp = tmp->next) {
|
|
DecodebinOutputStream *out = tmp->data;
|
|
GstStructure *structure;
|
|
if (out->decoder
|
|
&& (GST_MESSAGE_SRC (message) == (GstObject *) out->decoder
|
|
|| gst_object_has_as_ancestor (GST_MESSAGE_SRC (message),
|
|
(GstObject *) out->decoder))) {
|
|
message = gst_message_make_writable (message);
|
|
structure = gst_message_writable_details (message);
|
|
gst_structure_set (structure, "stream-id", G_TYPE_STRING,
|
|
out->slot->active_stream_id, NULL);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
|
|
|
|
return;
|
|
|
|
drop_message:
|
|
{
|
|
GST_DEBUG_OBJECT (bin, "dropping message");
|
|
gst_message_unref (message);
|
|
}
|
|
}
|
|
|
|
/* Called with SELECTION_LOCK taken */
|
|
static void
|
|
handle_stored_latency_message (GstDecodebin3 * dbin,
|
|
DecodebinOutputStream * output, CandidateDecoder * candidate)
|
|
{
|
|
GstClockTime min, max;
|
|
if (candidate->latency && GST_IS_VIDEO_DECODER (candidate->element)) {
|
|
gst_video_decoder_get_latency (GST_VIDEO_DECODER (candidate->element),
|
|
&min, &max);
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Got latency update from %" GST_PTR_FORMAT ". min: %"
|
|
GST_TIME_FORMAT " max: %" GST_TIME_FORMAT, candidate->element,
|
|
GST_TIME_ARGS (min), GST_TIME_ARGS (max));
|
|
output->decoder_latency = min;
|
|
/* Trigger recalculation */
|
|
gst_decodebin3_update_min_interleave (dbin);
|
|
|
|
GST_BIN_CLASS (parent_class)->handle_message (GST_BIN_CAST (dbin),
|
|
candidate->latency);
|
|
}
|
|
}
|
|
|
|
static DecodebinOutputStream *
|
|
find_free_compatible_output (GstDecodebin3 * dbin, GstStream * stream)
|
|
{
|
|
GList *tmp;
|
|
GstStreamType stype = gst_stream_get_stream_type (stream);
|
|
|
|
for (tmp = dbin->output_streams; tmp; tmp = tmp->next) {
|
|
DecodebinOutputStream *output = (DecodebinOutputStream *) tmp->data;
|
|
if (output->type == stype && output->slot && output->slot->active_stream) {
|
|
if (!stream_is_requested (dbin, output->slot->active_stream_id)) {
|
|
return output;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/** mq_slot_set_output:
|
|
* @slot: A #MultiQueueSlot
|
|
* @output: (allow none): A #DecodebinOutputStream
|
|
*
|
|
* Sets @output as the @slot output. The slot present previously will be
|
|
* returned.
|
|
*
|
|
* If the output previously associated was linked (via a decoder) to the slot,
|
|
* they will be unlinked.
|
|
*
|
|
* Returns: The output previously used on @slot.
|
|
*/
|
|
static DecodebinOutputStream *
|
|
mq_slot_set_output (MultiQueueSlot * slot, DecodebinOutputStream * output)
|
|
{
|
|
DecodebinOutputStream *old_output = slot->output;
|
|
|
|
GST_DEBUG_OBJECT (slot->src_pad, "output: %p", output);
|
|
|
|
if (old_output == output) {
|
|
GST_LOG_OBJECT (slot->src_pad, "Already targetting that output");
|
|
return output;
|
|
}
|
|
|
|
if (old_output) {
|
|
if (!old_output->slot)
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"Old output %p was not associated to any slot", old_output);
|
|
else
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"Old output %p was associated to %" GST_PTR_FORMAT, old_output,
|
|
old_output->slot->src_pad);
|
|
/* Check for inconsistencies in assigning */
|
|
g_assert (old_output->slot == slot);
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Unassigning");
|
|
if (old_output->decoder_sink && old_output->decoder)
|
|
gst_pad_unlink (slot->src_pad, old_output->decoder_sink);
|
|
old_output->linked = FALSE;
|
|
old_output->slot = NULL;
|
|
}
|
|
|
|
if (output) {
|
|
if (output->slot)
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"New output was previously associated to slot %s:%s",
|
|
GST_DEBUG_PAD_NAME (output->slot->src_pad));
|
|
output->slot = slot;
|
|
}
|
|
slot->output = output;
|
|
|
|
return old_output;
|
|
}
|
|
|
|
/** mq_slot_get_or_create_output:
|
|
* @slot: A #MultiQueueSlot
|
|
*
|
|
* Provides the #DecodebinOutputStream the @slot should use. This function will
|
|
* figure that out based on the current selection. The slot output will be
|
|
* updated accordingly.
|
|
*
|
|
* Call with SELECTION_LOCK taken
|
|
*
|
|
* Returns: The #DecodebinOutputStream to use, or #NULL if none can/should be
|
|
* used.
|
|
*/
|
|
static DecodebinOutputStream *
|
|
mq_slot_get_or_create_output (MultiQueueSlot * slot)
|
|
{
|
|
GstDecodebin3 *dbin = slot->dbin;
|
|
DecodebinOutputStream *output = NULL;
|
|
const gchar *stream_id;
|
|
|
|
/* If we already have a configured output, just use it */
|
|
if (slot->output != NULL) {
|
|
GST_LOG_OBJECT (slot->src_pad, "Returning current output %s:%s",
|
|
GST_DEBUG_PAD_NAME (slot->output->src_pad));
|
|
return slot->output;
|
|
}
|
|
|
|
stream_id = slot->active_stream_id;
|
|
GST_DEBUG_OBJECT (slot->src_pad, "active stream %" GST_PTR_FORMAT,
|
|
slot->active_stream);
|
|
|
|
/* If the stream is not requested, bail out */
|
|
if (!stream_is_requested (dbin, stream_id)
|
|
&& !dbin->upstream_handles_selection) {
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Not selected, not creating any output");
|
|
return NULL;
|
|
}
|
|
|
|
/* Check if we can steal an existing output stream we could re-use.
|
|
* that is:
|
|
* * an output stream whose slot->stream is not in requested
|
|
* * and is of the same type as this stream
|
|
*/
|
|
output = find_free_compatible_output (dbin, slot->active_stream);
|
|
if (output) {
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Reassigning to output %s:%s",
|
|
GST_DEBUG_PAD_NAME (output->src_pad));
|
|
/* Move this output from its current slot to this slot */
|
|
SELECTION_UNLOCK (dbin);
|
|
gst_pad_add_probe (output->slot->src_pad, GST_PAD_PROBE_TYPE_IDLE,
|
|
(GstPadProbeCallback) mq_slot_unassign_probe, output->slot, NULL);
|
|
SELECTION_LOCK (dbin);
|
|
return NULL;
|
|
}
|
|
|
|
output = db_output_stream_new (dbin, slot->type);
|
|
mq_slot_set_output (slot, output);
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Now active : %s", stream_id);
|
|
|
|
return output;
|
|
}
|
|
|
|
/* Returns SELECTED_STREAMS message if the active slots are equal to
|
|
* requested_selection, else NULL.
|
|
*
|
|
* Must be called with SELECTION_LOCK taken */
|
|
static GstMessage *
|
|
is_selection_done (GstDecodebin3 * dbin)
|
|
{
|
|
GList *tmp;
|
|
GstMessage *msg;
|
|
DecodebinCollection *collection = dbin->output_collection;
|
|
|
|
GST_LOG_OBJECT (dbin, "Checking");
|
|
|
|
if (dbin->upstream_handles_selection) {
|
|
GST_DEBUG ("Upstream handles stream selection, returning");
|
|
return NULL;
|
|
}
|
|
|
|
if (!collection) {
|
|
GST_DEBUG ("No collection");
|
|
return NULL;
|
|
}
|
|
|
|
if (collection->posted_streams_selected_msg) {
|
|
GST_DEBUG ("Already posted message for this selection");
|
|
return NULL;
|
|
}
|
|
|
|
if (collection->to_activate != NULL) {
|
|
GST_DEBUG ("Still have streams to activate");
|
|
return NULL;
|
|
}
|
|
for (tmp = collection->requested_selection; tmp; tmp = tmp->next) {
|
|
GST_DEBUG ("Checking requested stream %s", (gchar *) tmp->data);
|
|
if (!stream_is_active (dbin, (gchar *) tmp->data)) {
|
|
GST_DEBUG ("Not in active selection, returning");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Selection active, creating message");
|
|
|
|
/* All requested streams are present */
|
|
msg =
|
|
gst_message_new_streams_selected ((GstObject *) dbin,
|
|
collection->collection);
|
|
if (collection->seqnum != GST_SEQNUM_INVALID) {
|
|
gst_message_set_seqnum (msg, collection->seqnum);
|
|
}
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = tmp->data;
|
|
if (slot->output) {
|
|
GST_DEBUG_OBJECT (dbin, "Adding stream %s", slot->active_stream_id);
|
|
if (!stream_is_requested (dbin, slot->active_stream_id)) {
|
|
/* We *could* still have an old output which isn't fully deactivated
|
|
* yet. Not 100% ready yet */
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Stream from previous selection still active, bailing out");
|
|
gst_message_unref (msg);
|
|
return NULL;
|
|
}
|
|
gst_message_streams_selected_add (msg, slot->active_stream);
|
|
}
|
|
}
|
|
collection->posted_streams_selected_msg = TRUE;
|
|
|
|
return msg;
|
|
}
|
|
|
|
/*
|
|
* Returns TRUE if there are no more streams to output and an ERROR message
|
|
* should be posted
|
|
*/
|
|
static inline gboolean
|
|
no_more_streams_locked (GstDecodebin3 * dbin)
|
|
{
|
|
GList *tmp;
|
|
|
|
if (!dbin->output_collection)
|
|
return FALSE;
|
|
|
|
if (dbin->output_collection->requested_selection)
|
|
return FALSE;
|
|
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = tmp->data;
|
|
if (slot->output)
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/** mq_slot_check_reconfiguration:
|
|
* @slot: A #MultiQueueSlot
|
|
*
|
|
* Check if the @slot output needs to be (re)configured:
|
|
* * Should an output be created/setup ?
|
|
* * Should the associated output be reconfigured ?
|
|
*
|
|
* Will also handle missing streams message emission
|
|
*/
|
|
static void
|
|
mq_slot_check_reconfiguration (MultiQueueSlot * slot)
|
|
{
|
|
GstDecodebin3 *dbin = slot->dbin;
|
|
DecodebinOutputStream *output;
|
|
GstMessage *msg = NULL;
|
|
gboolean no_more_streams;
|
|
DecodebinCollection *collection = dbin->output_collection;
|
|
|
|
SELECTION_LOCK (dbin);
|
|
output = mq_slot_get_or_create_output (slot);
|
|
if (!output) {
|
|
/* Slot is not used. */
|
|
no_more_streams = no_more_streams_locked (dbin);
|
|
SELECTION_UNLOCK (dbin);
|
|
if (no_more_streams)
|
|
GST_ELEMENT_ERROR (slot->dbin, STREAM, FAILED, (NULL),
|
|
("No streams to output"));
|
|
return;
|
|
}
|
|
|
|
if (!db_output_stream_reconfigure (output, &msg)) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Removing failing stream from selection: %" GST_PTR_FORMAT,
|
|
slot->active_stream);
|
|
collection->requested_selection =
|
|
remove_from_list (collection->requested_selection,
|
|
slot->active_stream_id);
|
|
collection->posted_streams_selected_msg = FALSE;
|
|
|
|
/* Remove output */
|
|
mq_slot_set_output (slot, NULL);
|
|
dbin->output_streams = g_list_remove (dbin->output_streams, output);
|
|
db_output_stream_free (output);
|
|
|
|
no_more_streams = no_more_streams_locked (dbin);
|
|
SELECTION_UNLOCK (dbin);
|
|
if (msg)
|
|
gst_element_post_message ((GstElement *) slot->dbin, msg);
|
|
if (no_more_streams) {
|
|
GST_ELEMENT_ERROR (slot->dbin, CORE, MISSING_PLUGIN, (NULL),
|
|
("No suitable plugins found"));
|
|
return;
|
|
}
|
|
|
|
GST_ELEMENT_WARNING (slot->dbin, CORE, MISSING_PLUGIN, (NULL),
|
|
("Some plugins were missing"));
|
|
SELECTION_LOCK (dbin);
|
|
}
|
|
|
|
GstMessage *selection_msg = is_selection_done (dbin);
|
|
/* We reconfigured the associated output. Check if we're done with
|
|
* the current selection */
|
|
SELECTION_UNLOCK (dbin);
|
|
if (selection_msg)
|
|
gst_element_post_message ((GstElement *) slot->dbin, selection_msg);
|
|
}
|
|
|
|
static void
|
|
update_stream_presence (GstDecodebin3 * dbin, DecodebinCollection * collection)
|
|
{
|
|
GList *tmp;
|
|
|
|
if (dbin->upstream_handles_selection) {
|
|
collection->all_streams_present = TRUE;
|
|
return;
|
|
}
|
|
|
|
if (g_list_length (dbin->slots) !=
|
|
gst_stream_collection_get_size (collection->collection)) {
|
|
collection->all_streams_present = FALSE;
|
|
return;
|
|
}
|
|
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = tmp->data;
|
|
if (!stream_in_collection (collection->collection,
|
|
(gchar *) slot->active_stream_id)) {
|
|
collection->all_streams_present = FALSE;
|
|
return;
|
|
}
|
|
}
|
|
|
|
collection->all_streams_present = TRUE;
|
|
}
|
|
|
|
/** mq_slot_handle_stream_start:
|
|
* @slot: A #MultiQueueSlot
|
|
* @stream_event: A #GST_EVENT_STREAM_START
|
|
*
|
|
* Returns: The #GstPadProbeReturn. If #GST_PAD_PROBE_HANDLED the ownership of
|
|
* @stream_event was taken.
|
|
*/
|
|
static GstPadProbeReturn
|
|
mq_slot_handle_stream_start (MultiQueueSlot * slot, GstEvent * stream_event)
|
|
{
|
|
GstDecodebin3 *dbin = slot->dbin;
|
|
GstStream *stream = NULL;
|
|
const GstStructure *s = gst_event_get_structure (stream_event);
|
|
DecodebinCollection *collection;
|
|
GList *tmp, *next;
|
|
|
|
/* Drop STREAM_START events used to cleanup multiqueue */
|
|
if (s && gst_structure_has_field (s, "decodebin3-flushing-stream-start")) {
|
|
gst_event_unref (stream_event);
|
|
return GST_PAD_PROBE_HANDLED;
|
|
}
|
|
|
|
gst_event_parse_stream (stream_event, &stream);
|
|
if (stream == NULL) {
|
|
GST_ERROR_OBJECT (slot->src_pad,
|
|
"Got a STREAM_START event without a GstStream");
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
SELECTION_LOCK (dbin);
|
|
|
|
slot->is_drained = FALSE;
|
|
GST_DEBUG_OBJECT (slot->src_pad, "%" GST_PTR_FORMAT, stream);
|
|
|
|
/* 1. Store new stream/stream_id */
|
|
if (slot->active_stream == stream) {
|
|
GST_DEBUG_OBJECT (slot->src_pad, "No stream change");
|
|
goto beach;
|
|
}
|
|
|
|
gst_object_replace ((GstObject **) & slot->active_stream,
|
|
(GstObject *) stream);
|
|
slot->active_stream_id = gst_stream_get_stream_id (stream);
|
|
|
|
/* If the slot is active and the stream type is different, remove it.
|
|
*
|
|
* This will only happen in case no slots of the same type was available for
|
|
* that input (ex: switching from audio-only to video-only upstream of
|
|
* decodebin3).
|
|
*/
|
|
if (slot->output && slot->output->type != gst_stream_get_stream_type (stream)) {
|
|
DecodebinOutputStream *previous_output = slot->output;
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"Slot is changing stream type, removing output");
|
|
mq_slot_set_output (slot, NULL);
|
|
dbin->output_streams =
|
|
g_list_remove (dbin->output_streams, previous_output);
|
|
db_output_stream_free (previous_output);
|
|
}
|
|
|
|
collection =
|
|
find_collection_for_stream (dbin, (gchar *) slot->active_stream_id);
|
|
g_assert (collection);
|
|
|
|
/* check if all streams are present for that collection. We do it now since we
|
|
* might just have a single stream in the collection */
|
|
update_stream_presence (dbin, collection);
|
|
|
|
if (collection->all_streams_present)
|
|
GST_DEBUG_OBJECT (dbin, "All streams are now present for collection");
|
|
|
|
/* If the output collection didn't change, we can go and check if it's time to
|
|
* switch */
|
|
if (collection == dbin->output_collection)
|
|
goto check_for_switch;
|
|
|
|
/* Collection is different */
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Stream belongs to a new collection");
|
|
|
|
/* Make sure the collection has a valid selection at this point. */
|
|
update_requested_selection (dbin, collection);
|
|
|
|
/* NOTE: The assumption here would be that the collection for this stream is
|
|
* the "next" collection in the list of collections (i.e. the one following
|
|
* the current outputted one).
|
|
*
|
|
* But this is not always true since the collections might be rapidly
|
|
* expanding ones (like for example when a mpeg-ps or rtsp source dynamically
|
|
* adds the streams to a stream collection as it sees them).
|
|
*
|
|
* When switching output collection we need to drain out those "intermediary"
|
|
* collections and make sure they were valid.
|
|
*/
|
|
|
|
for (tmp = dbin->collections; tmp; tmp = next) {
|
|
DecodebinCollection *candidate = tmp->data;
|
|
next = tmp->next;
|
|
|
|
/* We have reached our target */
|
|
if (candidate == collection)
|
|
break;
|
|
/* This is the current output collection */
|
|
if (candidate == dbin->output_collection)
|
|
continue;
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Dropping intermediary collection %p is_update:%d %" GST_PTR_FORMAT,
|
|
candidate, candidate->is_update, candidate->collection);
|
|
|
|
/* Dropping an intermediate collection is only possible if there wasn't any
|
|
* previous output collection or it was an update of the previous one
|
|
*/
|
|
g_assert (candidate->is_update || dbin->output_collection == NULL);
|
|
dbin->collections = g_list_remove (dbin->collections, candidate);
|
|
db_collection_free (candidate);
|
|
}
|
|
|
|
if (dbin->output_collection == NULL) {
|
|
/* We can switch immediately to this collection */
|
|
dbin->output_collection = collection;
|
|
goto check_for_switch;
|
|
}
|
|
|
|
/* If the new collection is fully present, we can switch */
|
|
if (collection->all_streams_present) {
|
|
GST_DEBUG_OBJECT (dbin, "Switching to new output collection");
|
|
dbin->collections =
|
|
g_list_remove (dbin->collections, dbin->output_collection);
|
|
db_collection_free (dbin->output_collection);
|
|
dbin->output_collection = collection;
|
|
}
|
|
|
|
check_for_switch:
|
|
if (!dbin->upstream_handles_selection && collection == dbin->output_collection
|
|
&& collection->all_streams_present) {
|
|
handle_stream_switch (dbin);
|
|
}
|
|
|
|
beach:
|
|
gst_object_unref (stream);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
return GST_PAD_PROBE_OK;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
multiqueue_src_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
MultiQueueSlot * slot)
|
|
{
|
|
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
|
|
GstDecodebin3 *dbin = slot->dbin;
|
|
|
|
if (GST_IS_EVENT (GST_PAD_PROBE_INFO_DATA (info))) {
|
|
GstEvent *ev = GST_PAD_PROBE_INFO_EVENT (info);
|
|
|
|
GST_DEBUG_OBJECT (pad, "Got event %p %s", ev, GST_EVENT_TYPE_NAME (ev));
|
|
switch (GST_EVENT_TYPE (ev)) {
|
|
case GST_EVENT_STREAM_START:
|
|
ret = mq_slot_handle_stream_start (slot, (GstEvent *) ev);
|
|
break;
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
/* Configure the output slot if needed */
|
|
mq_slot_check_reconfiguration (slot);
|
|
}
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
{
|
|
slot->is_drained = TRUE;
|
|
|
|
GST_FIXME_OBJECT (pad, "EOS on multiqueue source pad. input:%p",
|
|
slot->input);
|
|
if (slot->input == NULL) {
|
|
GstPad *peer;
|
|
GST_DEBUG_OBJECT (pad,
|
|
"last EOS for input, forwarding and removing slot");
|
|
peer = gst_pad_get_peer (pad);
|
|
if (peer) {
|
|
gst_pad_send_event (peer, gst_event_ref (ev));
|
|
gst_object_unref (peer);
|
|
}
|
|
|
|
SELECTION_LOCK (dbin);
|
|
/* FIXME: Removing the slot is async, which means actually
|
|
* unlinking the pad is async. Other things like stream-start
|
|
* might flow through this (now unprobed) link before it actually
|
|
* gets released */
|
|
remove_slot_from_streaming_thread (dbin, slot);
|
|
SELECTION_UNLOCK (dbin);
|
|
ret = GST_PAD_PROBE_REMOVE;
|
|
} else {
|
|
GST_DEBUG_OBJECT (pad, "Got regular eos, propagating downstream");
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
} else if (GST_IS_QUERY (GST_PAD_PROBE_INFO_DATA (info))) {
|
|
GstQuery *query = GST_PAD_PROBE_INFO_QUERY (info);
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_CAPS:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "Intercepting CAPS query");
|
|
gst_query_set_caps_result (query, GST_CAPS_ANY);
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
}
|
|
break;
|
|
|
|
case GST_QUERY_ACCEPT_CAPS:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "Intercepting Accept Caps query");
|
|
/* If the current decoder doesn't accept caps, we'll reconfigure
|
|
* on the actual caps event. So accept any caps. */
|
|
gst_query_set_accept_caps_result (query, TRUE);
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Create a new multiqueue slot for the given type
|
|
*
|
|
* It is up to the caller to know whether that slot is needed or not
|
|
* (and release it when no longer needed) */
|
|
static MultiQueueSlot *
|
|
create_new_slot (GstDecodebin3 * dbin, GstStreamType type)
|
|
{
|
|
MultiQueueSlot *slot;
|
|
GstIterator *it = NULL;
|
|
GValue item = { 0, };
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Creating new slot for type %s",
|
|
gst_stream_type_get_name (type));
|
|
slot = g_new0 (MultiQueueSlot, 1);
|
|
slot->dbin = dbin;
|
|
|
|
slot->id = dbin->slot_id++;
|
|
|
|
slot->type = type;
|
|
slot->sink_pad = gst_element_request_pad_simple (dbin->multiqueue, "sink_%u");
|
|
if (slot->sink_pad == NULL)
|
|
goto fail;
|
|
|
|
it = gst_pad_iterate_internal_links (slot->sink_pad);
|
|
if (!it || (gst_iterator_next (it, &item)) != GST_ITERATOR_OK
|
|
|| ((slot->src_pad = g_value_dup_object (&item)) == NULL)) {
|
|
GST_ERROR ("Couldn't get srcpad from multiqueue for sink pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (slot->src_pad));
|
|
goto fail;
|
|
}
|
|
gst_iterator_free (it);
|
|
g_value_reset (&item);
|
|
|
|
g_object_set (slot->sink_pad, "group-id", (guint) type, NULL);
|
|
|
|
/* Add event probe */
|
|
slot->probe_id =
|
|
gst_pad_add_probe (slot->src_pad,
|
|
GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM | GST_PAD_PROBE_TYPE_QUERY_DOWNSTREAM,
|
|
(GstPadProbeCallback) multiqueue_src_probe, slot, NULL);
|
|
|
|
GST_DEBUG ("Created new slot %u (%p) (%s:%s)", slot->id, slot,
|
|
GST_DEBUG_PAD_NAME (slot->src_pad));
|
|
|
|
dbin->slots = g_list_append (dbin->slots, slot);
|
|
|
|
return slot;
|
|
|
|
/* ERRORS */
|
|
fail:
|
|
{
|
|
if (slot->sink_pad)
|
|
gst_element_release_request_pad (dbin->multiqueue, slot->sink_pad);
|
|
g_free (slot);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/** gst_decodebin_get_slot_for_input_stream_locked:
|
|
* @dbin: #GstDecodebin3
|
|
* @input_stream: A #DecodebinInputstream
|
|
*
|
|
* Finds and returns the #MultiQueueslot for the given @input_stream. If needed
|
|
* it will create a new one.
|
|
*
|
|
* Must be called with the SELECTION_LOCK taken
|
|
*/
|
|
static MultiQueueSlot *
|
|
gst_decodebin_get_slot_for_input_stream_locked (GstDecodebin3 * dbin,
|
|
DecodebinInputStream * input_stream)
|
|
{
|
|
GList *tmp;
|
|
MultiQueueSlot *empty_slot = NULL;
|
|
GstStreamType input_type = 0;
|
|
gchar *stream_id = NULL;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "input %p (stream %p %s)",
|
|
input_stream, input_stream->active_stream,
|
|
input_stream->
|
|
active_stream ? gst_stream_get_stream_id (input_stream->active_stream) :
|
|
"");
|
|
|
|
if (input_stream->active_stream) {
|
|
input_type = gst_stream_get_stream_type (input_stream->active_stream);
|
|
stream_id =
|
|
(gchar *) gst_stream_get_stream_id (input_stream->active_stream);
|
|
}
|
|
|
|
/* Go over existing slots and check if there is already one for it */
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
/* Already used input, return that one */
|
|
if (slot->input == input_stream) {
|
|
GST_DEBUG_OBJECT (dbin, "Returning already specified slot %d", slot->id);
|
|
if (input_type && slot->type != input_type) {
|
|
/* The input stream type has changed. It is the responsibility of the
|
|
* user of decodebin3 to ensure that the inputs are coherent.
|
|
*
|
|
* The only case where the stream type will change is when switching
|
|
* between sources which have non-intersecting stream types (ex:
|
|
* switching from audio-only file to video-only file)
|
|
*
|
|
* NOTE : We need to change the slot type here, since it is notified as
|
|
* soon as the *input* of the slot changes.
|
|
*/
|
|
GST_DEBUG_OBJECT (dbin, "Changing multiqueue slot stream type");
|
|
slot->type = input_type;
|
|
}
|
|
return slot;
|
|
}
|
|
}
|
|
|
|
/* Go amongst all unused slots of the right type and try to find a candidate */
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
if (slot->input == NULL && input_type == slot->type) {
|
|
/* Remember this empty slot for later */
|
|
empty_slot = slot;
|
|
/* Check if available slot is of the same stream_id */
|
|
GST_LOG_OBJECT (dbin, "Checking candidate slot %d (active_stream:%p)",
|
|
slot->id, slot->active_stream);
|
|
if (stream_id && slot->active_stream) {
|
|
GST_DEBUG_OBJECT (dbin, "Checking slot %d %s against %s", slot->id,
|
|
slot->active_stream_id, stream_id);
|
|
if (!g_strcmp0 (stream_id, slot->active_stream_id))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (empty_slot) {
|
|
GST_DEBUG_OBJECT (dbin, "Re-using existing unused slot %d", empty_slot->id);
|
|
return empty_slot;
|
|
}
|
|
|
|
if (input_type)
|
|
return create_new_slot (dbin, input_type);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/** gst_decodebin_input_link_to_slot:
|
|
* @input_stream: A #DecodebinInputStream
|
|
*
|
|
* Figures out the appropriate #MultiQueueSlot for @input_stream and links to it
|
|
*
|
|
* Must be called with the SELECTION_LOCK taken
|
|
*/
|
|
static void
|
|
gst_decodebin_input_link_to_slot (DecodebinInputStream * input_stream)
|
|
{
|
|
GstDecodebin3 *dbin = input_stream->dbin;
|
|
MultiQueueSlot *slot =
|
|
gst_decodebin_get_slot_for_input_stream_locked (dbin, input_stream);
|
|
|
|
if (slot->input != NULL && slot->input != input_stream) {
|
|
GST_ERROR_OBJECT (slot->dbin, "Input stream is already linked to a slot");
|
|
return;
|
|
}
|
|
gst_pad_link_full (input_stream->srcpad, slot->sink_pad,
|
|
GST_PAD_LINK_CHECK_NOTHING);
|
|
slot->pending_stream = input_stream->active_stream;
|
|
slot->input = input_stream;
|
|
}
|
|
|
|
static GList *
|
|
create_decoder_factory_list (GstDecodebin3 * dbin, GstCaps * caps)
|
|
{
|
|
GList *res;
|
|
|
|
g_mutex_lock (&dbin->factories_lock);
|
|
gst_decode_bin_update_factories_list (dbin);
|
|
res = gst_element_factory_list_filter (dbin->decoder_factories,
|
|
caps, GST_PAD_SINK, TRUE);
|
|
g_mutex_unlock (&dbin->factories_lock);
|
|
return res;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
keyframe_waiter_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
MultiQueueSlot * slot)
|
|
{
|
|
GstBuffer *buf = GST_PAD_PROBE_INFO_BUFFER (info);
|
|
|
|
/* If we have a keyframe, remove the probe and let all data through */
|
|
if (!GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT) ||
|
|
GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_HEADER)) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Buffer is keyframe or header, letting through and removing probe");
|
|
slot->drop_probe_id = 0;
|
|
return GST_PAD_PROBE_REMOVE;
|
|
}
|
|
GST_DEBUG_OBJECT (pad, "Buffer is not a keyframe, dropping");
|
|
return GST_PAD_PROBE_DROP;
|
|
}
|
|
|
|
static gboolean
|
|
clear_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data)
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "clearing sticky event %" GST_PTR_FORMAT, *event);
|
|
gst_event_unref (*event);
|
|
*event = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
copy_sticky_events (GstPad * pad, GstEvent ** event, gpointer user_data)
|
|
{
|
|
GstPad *gpad = GST_PAD_CAST (user_data);
|
|
|
|
GST_DEBUG_OBJECT (gpad, "store sticky event %" GST_PTR_FORMAT, *event);
|
|
gst_pad_store_sticky_event (gpad, *event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
decode_pad_set_target (GstGhostPad * pad, GstPad * target)
|
|
{
|
|
gboolean res = gst_ghost_pad_set_target (pad, target);
|
|
if (!res)
|
|
return res;
|
|
|
|
if (target == NULL)
|
|
gst_pad_sticky_events_foreach (GST_PAD_CAST (pad), clear_sticky_events,
|
|
NULL);
|
|
else
|
|
gst_pad_sticky_events_foreach (target, copy_sticky_events, pad);
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
db_output_stream_expose_src_pad (DecodebinOutputStream * output)
|
|
{
|
|
MultiQueueSlot *slot = output->slot;
|
|
GstEvent *stream_start;
|
|
|
|
if (output->src_exposed)
|
|
return;
|
|
|
|
stream_start =
|
|
gst_pad_get_sticky_event (slot->src_pad, GST_EVENT_STREAM_START, 0);
|
|
|
|
/* Ensure GstStream is accesiable from pad-added callback */
|
|
if (stream_start) {
|
|
gst_pad_store_sticky_event (output->src_pad, stream_start);
|
|
gst_event_unref (stream_start);
|
|
} else {
|
|
GST_WARNING_OBJECT (slot->src_pad, "Pad has no stored stream-start event");
|
|
}
|
|
|
|
output->src_exposed = TRUE;
|
|
gst_element_add_pad (GST_ELEMENT_CAST (slot->dbin), output->src_pad);
|
|
}
|
|
|
|
static CandidateDecoder *
|
|
add_candidate_decoder (GstDecodebin3 * dbin, GstElement * element)
|
|
{
|
|
GST_OBJECT_LOCK (dbin);
|
|
CandidateDecoder *candidate;
|
|
candidate = g_new0 (CandidateDecoder, 1);
|
|
candidate->element = element;
|
|
dbin->candidate_decoders =
|
|
g_list_prepend (dbin->candidate_decoders, candidate);
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
return candidate;
|
|
}
|
|
|
|
static void
|
|
remove_candidate_decoder (GstDecodebin3 * dbin, CandidateDecoder * candidate)
|
|
{
|
|
GST_OBJECT_LOCK (dbin);
|
|
dbin->candidate_decoders =
|
|
g_list_remove (dbin->candidate_decoders, candidate);
|
|
if (candidate->error)
|
|
gst_message_unref (candidate->error);
|
|
g_free (candidate);
|
|
GST_OBJECT_UNLOCK (dbin);
|
|
}
|
|
|
|
/** db_output_stream_setup_decoder:
|
|
* @output: A #DecodebinOutputStream
|
|
* @caps: (transfer none): The #GstCaps for which we want a decoder
|
|
* @msg: A pointer to a #GstMessage
|
|
*
|
|
* Finds the appropriate decoder for @caps and sets it up. If the @caps match
|
|
* the decodebin output caps, it will be configured to propagate the stream
|
|
* as-is without any decoder.
|
|
*
|
|
* Returns: #TRUE if a decoder was found and properly setup, else #FALSE. If the
|
|
* failure was due to missing plugins, then @msg will be properly filled up.
|
|
*/
|
|
static gboolean
|
|
db_output_stream_setup_decoder (DecodebinOutputStream * output,
|
|
GstCaps * new_caps, GstMessage ** msg)
|
|
{
|
|
gboolean ret = TRUE;
|
|
GstDecodebin3 *dbin = output->dbin;
|
|
MultiQueueSlot *slot = output->slot;
|
|
GList *factories, *next_factory;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "output %s:%s caps %" GST_PTR_FORMAT,
|
|
GST_DEBUG_PAD_NAME (output->src_pad), new_caps);
|
|
|
|
/* If no decoder is required, use the slot source pad and we're done */
|
|
if (gst_caps_can_intersect (new_caps, dbin->caps)) {
|
|
output->decoder_src = gst_object_ref (slot->src_pad);
|
|
goto done;
|
|
}
|
|
|
|
factories = next_factory = create_decoder_factory_list (dbin, new_caps);
|
|
if (!next_factory) {
|
|
GST_DEBUG ("Could not find an element for caps %" GST_PTR_FORMAT, new_caps);
|
|
g_assert (output->decoder == NULL);
|
|
ret = FALSE;
|
|
goto missing_decoder;
|
|
}
|
|
|
|
while (next_factory) {
|
|
CandidateDecoder *candidate = NULL;
|
|
|
|
/* If we don't have a decoder yet, instantiate one */
|
|
output->decoder = gst_element_factory_create (
|
|
(GstElementFactory *) next_factory->data, NULL);
|
|
GST_DEBUG ("Trying decoder %" GST_PTR_FORMAT, output->decoder);
|
|
|
|
if (output->decoder == NULL)
|
|
goto try_next;
|
|
|
|
if (!gst_bin_add ((GstBin *) dbin, output->decoder)) {
|
|
GST_WARNING_OBJECT (dbin, "could not add decoder '%s' to pipeline",
|
|
GST_ELEMENT_NAME (output->decoder));
|
|
goto try_next;
|
|
}
|
|
output->decoder_sink = gst_element_get_static_pad (output->decoder, "sink");
|
|
output->decoder_src = gst_element_get_static_pad (output->decoder, "src");
|
|
|
|
candidate = add_candidate_decoder (dbin, output->decoder);
|
|
if (gst_pad_link_full (slot->src_pad, output->decoder_sink,
|
|
GST_PAD_LINK_CHECK_NOTHING) != GST_PAD_LINK_OK) {
|
|
GST_WARNING_OBJECT (dbin, "could not link to %s:%s",
|
|
GST_DEBUG_PAD_NAME (output->decoder_sink));
|
|
goto try_next;
|
|
}
|
|
output->linked = TRUE;
|
|
|
|
if (gst_element_set_state (output->decoder, GST_STATE_READY) ==
|
|
GST_STATE_CHANGE_FAILURE) {
|
|
GST_WARNING_OBJECT (dbin, "Decoder '%s' failed to reach READY state",
|
|
GST_ELEMENT_NAME (output->decoder));
|
|
goto try_next;
|
|
}
|
|
|
|
if (!gst_pad_query_accept_caps (output->decoder_sink, new_caps)) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Decoder '%s' did not accept the caps, trying the next type",
|
|
GST_ELEMENT_NAME (output->decoder));
|
|
goto try_next;
|
|
}
|
|
|
|
if (gst_element_set_state (output->decoder, GST_STATE_PAUSED) ==
|
|
GST_STATE_CHANGE_FAILURE) {
|
|
GST_WARNING_OBJECT (dbin, "Decoder '%s' failed to reach PAUSED state",
|
|
GST_ELEMENT_NAME (output->decoder));
|
|
goto try_next;
|
|
}
|
|
|
|
/* Everything went well, we have a decoder */
|
|
GST_DEBUG ("created decoder %" GST_PTR_FORMAT, output->decoder);
|
|
|
|
handle_stored_latency_message (dbin, output, candidate);
|
|
remove_candidate_decoder (dbin, candidate);
|
|
break;
|
|
|
|
try_next:{
|
|
db_output_stream_reset (output);
|
|
if (candidate)
|
|
remove_candidate_decoder (dbin, candidate);
|
|
|
|
if (!next_factory->next) {
|
|
ret = FALSE;
|
|
if (output->decoder == NULL)
|
|
goto missing_decoder;
|
|
goto cleanup;
|
|
}
|
|
next_factory = next_factory->next;
|
|
}
|
|
}
|
|
gst_plugin_feature_list_free (factories);
|
|
|
|
done:
|
|
if (output->type & GST_STREAM_TYPE_VIDEO && slot->drop_probe_id == 0) {
|
|
GST_DEBUG_OBJECT (dbin, "Adding keyframe-waiter probe");
|
|
slot->drop_probe_id =
|
|
gst_pad_add_probe (slot->src_pad, GST_PAD_PROBE_TYPE_BUFFER,
|
|
(GstPadProbeCallback) keyframe_waiter_probe, slot, NULL);
|
|
}
|
|
|
|
/* Set the decode pad target */
|
|
decode_pad_set_target ((GstGhostPad *) output->src_pad, output->decoder_src);
|
|
|
|
/* Expose the source pad if needed */
|
|
db_output_stream_expose_src_pad (output);
|
|
|
|
if (output->decoder)
|
|
gst_element_sync_state_with_parent (output->decoder);
|
|
|
|
return ret;
|
|
|
|
missing_decoder:
|
|
{
|
|
GstCaps *caps;
|
|
|
|
caps = gst_stream_get_caps (slot->active_stream);
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"We are missing a decoder for %" GST_PTR_FORMAT, caps);
|
|
*msg = gst_missing_decoder_message_new (GST_ELEMENT_CAST (dbin), caps);
|
|
gst_missing_plugin_message_set_stream_id (*msg,
|
|
gst_stream_get_stream_id (slot->active_stream));
|
|
gst_caps_unref (caps);
|
|
|
|
/* FALLTHROUGH */
|
|
}
|
|
|
|
cleanup:
|
|
{
|
|
GST_DEBUG_OBJECT (dbin, "Cleanup");
|
|
if (output->decoder_sink) {
|
|
gst_object_unref (output->decoder_sink);
|
|
output->decoder_sink = NULL;
|
|
}
|
|
if (output->decoder_src) {
|
|
gst_object_unref (output->decoder_src);
|
|
output->decoder_src = NULL;
|
|
}
|
|
if (output->decoder) {
|
|
gst_element_set_state (output->decoder, GST_STATE_NULL);
|
|
gst_bin_remove ((GstBin *) dbin, output->decoder);
|
|
output->decoder = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/** db_output_stream_reconfigure:
|
|
* @output: A #DecodebinOutputStream
|
|
* @msg: A pointer to a #GstMessage
|
|
*
|
|
* (Re)Configure the @output for the associated slot active stream.
|
|
*
|
|
* Returns: #TRUE if the output was properly (re)configured. #FALSE if it
|
|
* failed, in which case the stream shouldn't be used and the @msg might contain
|
|
* a message to be posted on the bus.
|
|
*/
|
|
static gboolean
|
|
db_output_stream_reconfigure (DecodebinOutputStream * output, GstMessage ** msg)
|
|
{
|
|
MultiQueueSlot *slot = output->slot;
|
|
GstDecodebin3 *dbin = output->dbin;
|
|
GstCaps *new_caps = (GstCaps *) gst_stream_get_caps (slot->active_stream);
|
|
gboolean needs_decoder;
|
|
gboolean ret = TRUE;
|
|
|
|
needs_decoder = gst_caps_can_intersect (new_caps, dbin->caps) != TRUE;
|
|
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Reconfiguring output %s:%s to slot %s:%s, needs_decoder:%d",
|
|
GST_DEBUG_PAD_NAME (output->src_pad), GST_DEBUG_PAD_NAME (slot->src_pad),
|
|
needs_decoder);
|
|
|
|
/* First check if we can re-use the output as-is for the new caps:
|
|
* * Either we have a decoder and it can accept the new caps
|
|
* * Or we don't have one and don't need one
|
|
*/
|
|
|
|
/* If we need a decoder and the existing one can accept the new caps, re-use it */
|
|
if (needs_decoder && output->decoder &&
|
|
gst_pad_query_accept_caps (output->decoder_sink, new_caps)) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Reusing existing decoder '%" GST_PTR_FORMAT "' for slot %p",
|
|
output->decoder, slot);
|
|
/* Re-add the keyframe-waiter probe */
|
|
if (output->type & GST_STREAM_TYPE_VIDEO && slot->drop_probe_id == 0) {
|
|
GST_DEBUG_OBJECT (dbin, "Adding keyframe-waiter probe");
|
|
slot->drop_probe_id =
|
|
gst_pad_add_probe (slot->src_pad, GST_PAD_PROBE_TYPE_BUFFER,
|
|
(GstPadProbeCallback) keyframe_waiter_probe, slot, NULL);
|
|
}
|
|
if (output->linked == FALSE) {
|
|
gst_pad_link_full (slot->src_pad, output->decoder_sink,
|
|
GST_PAD_LINK_CHECK_NOTHING);
|
|
output->linked = TRUE;
|
|
}
|
|
} else {
|
|
/* We need to reset the output and set it up again */
|
|
db_output_stream_reset (output);
|
|
|
|
/* Setup the decoder */
|
|
ret = db_output_stream_setup_decoder (output, new_caps, msg);
|
|
}
|
|
|
|
gst_caps_unref (new_caps);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
idle_reconfigure (GstPad * pad, GstPadProbeInfo * info, MultiQueueSlot * slot)
|
|
{
|
|
mq_slot_check_reconfiguration (slot);
|
|
|
|
return GST_PAD_PROBE_REMOVE;
|
|
}
|
|
|
|
static MultiQueueSlot *
|
|
find_slot_for_stream_id (GstDecodebin3 * dbin, const gchar * sid)
|
|
{
|
|
GList *tmp;
|
|
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
if (!g_strcmp0 (sid, slot->active_stream_id))
|
|
return slot;
|
|
if (slot->pending_stream && slot->pending_stream != slot->active_stream) {
|
|
const gchar *stream_id = gst_stream_get_stream_id (slot->pending_stream);
|
|
if (!g_strcmp0 (sid, stream_id))
|
|
return slot;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* This function handles the reassignment of a slot. Call this from
|
|
* the streaming thread of a slot. */
|
|
static void
|
|
mq_slot_reassign (MultiQueueSlot * slot)
|
|
{
|
|
GstDecodebin3 *dbin = slot->dbin;
|
|
DecodebinOutputStream *output;
|
|
MultiQueueSlot *target_slot = NULL;
|
|
GList *tmp;
|
|
DecodebinCollection *collection = dbin->output_collection;
|
|
|
|
SELECTION_LOCK (dbin);
|
|
output = slot->output;
|
|
|
|
if (G_UNLIKELY (slot->active_stream == NULL || output == NULL)) {
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Called on slot not active or requested");
|
|
SELECTION_UNLOCK (dbin);
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (slot->src_pad, "stream: %s", slot->active_stream_id);
|
|
|
|
/* Recheck whether this stream is still in the list of streams to deactivate */
|
|
if (stream_is_requested (dbin, slot->active_stream_id)) {
|
|
/* Stream is in the list of requested streams, don't remove */
|
|
SELECTION_UNLOCK (dbin);
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"Stream '%s' doesn't need to be deactivated", slot->active_stream_id);
|
|
return;
|
|
}
|
|
|
|
/* Unlink slot from output */
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Unlinking from previous output");
|
|
mq_slot_set_output (slot, NULL);
|
|
|
|
/* Can we re-assign this output to a requested stream ? */
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Attempting to re-assing output stream");
|
|
for (tmp = collection->to_activate; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *tslot = find_slot_for_stream_id (dbin, tmp->data);
|
|
GST_LOG_OBJECT (slot->src_pad,
|
|
"Checking slot %s:%s (output:%p , stream:%s)",
|
|
GST_DEBUG_PAD_NAME (tslot->src_pad), tslot->output,
|
|
tslot->active_stream_id);
|
|
if (tslot && tslot->type == output->type && tslot->output == NULL) {
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Using %s:%s as reassigned slot",
|
|
GST_DEBUG_PAD_NAME (tslot->src_pad));
|
|
target_slot = tslot;
|
|
collection->to_activate =
|
|
g_list_delete_link (collection->to_activate, tmp);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (target_slot) {
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Assigning output to slot %s:%s '%s'",
|
|
GST_DEBUG_PAD_NAME (target_slot->src_pad),
|
|
target_slot->active_stream_id);
|
|
mq_slot_set_output (target_slot, output);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
/* Wakeup the target slot so that it retries to send events/buffers
|
|
* thereby triggering the output reconfiguration codepath */
|
|
gst_pad_add_probe (target_slot->src_pad, GST_PAD_PROBE_TYPE_IDLE,
|
|
(GstPadProbeCallback) idle_reconfigure, target_slot, NULL);
|
|
} else {
|
|
GstMessage *msg;
|
|
|
|
GST_DEBUG_OBJECT (slot->src_pad, "No target slot, removing output");
|
|
dbin->output_streams = g_list_remove (dbin->output_streams, output);
|
|
db_output_stream_free (output);
|
|
msg = is_selection_done (slot->dbin);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
if (msg)
|
|
gst_element_post_message ((GstElement *) slot->dbin, msg);
|
|
}
|
|
}
|
|
|
|
/* Idle probe called when a slot should be unassigned from its output stream.
|
|
* This is needed to ensure nothing is flowing when unlinking the slot.
|
|
*
|
|
* Also, this method will search for a pending stream which could re-use
|
|
* the output stream. */
|
|
static GstPadProbeReturn
|
|
mq_slot_unassign_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
MultiQueueSlot * slot)
|
|
{
|
|
mq_slot_reassign (slot);
|
|
|
|
return GST_PAD_PROBE_REMOVE;
|
|
}
|
|
|
|
/** handle_stream_switch:
|
|
* @dbin: A #GstDecodebin3
|
|
*
|
|
* Figures out which slots to (de)activate for the given output_collection.
|
|
*
|
|
* Must be called with SELECTION_LOCK taken.
|
|
*/
|
|
static void
|
|
handle_stream_switch (GstDecodebin3 * dbin)
|
|
{
|
|
DecodebinCollection *collection = dbin->output_collection;
|
|
GList *tmp;
|
|
/* List of slots to (de)activate. */
|
|
GList *slots_to_deactivate = NULL;
|
|
GList *slots_to_activate = NULL;
|
|
|
|
GList *streams_to_reassign = NULL;
|
|
GList *future_request_streams = NULL;
|
|
GList *pending_streams = NULL;
|
|
GList *slots_to_reassign = NULL;
|
|
|
|
g_return_if_fail (collection);
|
|
|
|
/* COMPARE the requested streams to the active and requested streams
|
|
* on multiqueue. */
|
|
|
|
/* First check the slots to activate and which ones are unknown */
|
|
for (tmp = collection->requested_selection; tmp; tmp = tmp->next) {
|
|
const gchar *sid = (const gchar *) tmp->data;
|
|
MultiQueueSlot *slot;
|
|
GST_DEBUG_OBJECT (dbin, "Checking for requested stream '%s'", sid);
|
|
slot = find_slot_for_stream_id (dbin, sid);
|
|
|
|
/* Find the multiqueue slot which is outputting, or will output, this stream
|
|
* id */
|
|
if (slot == NULL || slot->active_stream == NULL) {
|
|
/* There is no slot on which this stream is active */
|
|
GST_DEBUG_OBJECT (dbin, "Adding to pending streams '%s'", sid);
|
|
pending_streams = g_list_append (pending_streams, (gchar *) sid);
|
|
} else if (slot->output == NULL) {
|
|
/* There is a slot on which this stream is active or pending */
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"We need to activate slot %s:%s for stream '%s')",
|
|
GST_DEBUG_PAD_NAME (slot->src_pad), sid);
|
|
slots_to_activate = g_list_append (slots_to_activate, slot);
|
|
} else {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Stream '%s' from slot %s:%s is already active on output %p", sid,
|
|
GST_DEBUG_PAD_NAME (slot->src_pad), slot->output);
|
|
future_request_streams =
|
|
g_list_append (future_request_streams, (gchar *) sid);
|
|
}
|
|
}
|
|
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
/* For slots that have an output, check if it's part of the streams to
|
|
* be active */
|
|
if (slot->output) {
|
|
gboolean slot_to_deactivate = TRUE;
|
|
|
|
if (slot->active_stream) {
|
|
if (stream_in_list (collection->requested_selection,
|
|
slot->active_stream_id))
|
|
slot_to_deactivate = FALSE;
|
|
}
|
|
if (slot_to_deactivate && slot->pending_stream
|
|
&& slot->pending_stream != slot->active_stream) {
|
|
if (stream_in_list (collection->requested_selection,
|
|
gst_stream_get_stream_id (slot->pending_stream)))
|
|
slot_to_deactivate = FALSE;
|
|
}
|
|
if (slot_to_deactivate) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Slot %s:%s (%s) should be deactivated, no longer used",
|
|
GST_DEBUG_PAD_NAME (slot->src_pad), slot->active_stream_id);
|
|
slots_to_deactivate = g_list_append (slots_to_deactivate, slot);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (slots_to_deactivate != NULL) {
|
|
GST_DEBUG_OBJECT (dbin, "Check if we can reassign slots");
|
|
/* We need to compare what needs to be activated and deactivated in order
|
|
* to determine whether there are outputs that can be transferred */
|
|
/* Take the stream-id of the slots that are to be activated, for which there
|
|
* is a slot of the same type that needs to be deactivated */
|
|
tmp = slots_to_deactivate;
|
|
while (tmp) {
|
|
MultiQueueSlot *slot_to_deactivate = (MultiQueueSlot *) tmp->data;
|
|
gboolean removeit = FALSE;
|
|
GList *tmp2, *next;
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Checking if slot to deactivate (%s:%s) has a candidate slot to activate",
|
|
GST_DEBUG_PAD_NAME (slot_to_deactivate->src_pad));
|
|
for (tmp2 = slots_to_activate; tmp2; tmp2 = tmp2->next) {
|
|
MultiQueueSlot *slot_to_activate = (MultiQueueSlot *) tmp2->data;
|
|
GST_DEBUG_OBJECT (dbin, "Comparing to slot %s:%s (%s)",
|
|
GST_DEBUG_PAD_NAME (slot_to_activate->src_pad),
|
|
slot_to_activate->active_stream_id);
|
|
if (slot_to_activate->type == slot_to_deactivate->type) {
|
|
GST_DEBUG_OBJECT (dbin, "Re-using");
|
|
streams_to_reassign = g_list_append (streams_to_reassign, (gchar *)
|
|
slot_to_activate->active_stream_id);
|
|
slots_to_reassign =
|
|
g_list_append (slots_to_reassign, slot_to_deactivate);
|
|
slots_to_activate =
|
|
g_list_remove (slots_to_activate, slot_to_activate);
|
|
removeit = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
next = tmp->next;
|
|
if (removeit)
|
|
slots_to_deactivate = g_list_delete_link (slots_to_deactivate, tmp);
|
|
tmp = next;
|
|
}
|
|
}
|
|
|
|
for (tmp = slots_to_deactivate; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Really need to deactivate slot %s:%s (%s), but no available alternative",
|
|
GST_DEBUG_PAD_NAME (slot->src_pad), slot->active_stream_id);
|
|
|
|
slots_to_reassign = g_list_append (slots_to_reassign, slot);
|
|
}
|
|
|
|
/* The only slots left to activate are the ones that won't be reassigned and
|
|
* therefore really need to have a new output created */
|
|
for (tmp = slots_to_activate; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
if (slot->active_stream)
|
|
future_request_streams =
|
|
g_list_append (future_request_streams,
|
|
(gchar *) slot->active_stream_id);
|
|
else if (slot->pending_stream)
|
|
future_request_streams =
|
|
g_list_append (future_request_streams,
|
|
(gchar *) gst_stream_get_stream_id (slot->pending_stream));
|
|
else
|
|
GST_ERROR_OBJECT (dbin, "No stream for slot %s:%s !!",
|
|
GST_DEBUG_PAD_NAME (slot->src_pad));
|
|
}
|
|
|
|
if (slots_to_activate == NULL && pending_streams != NULL) {
|
|
GST_ERROR_OBJECT (dbin, "Stream switch requested for future collection");
|
|
g_list_free (slots_to_deactivate);
|
|
g_list_free (pending_streams);
|
|
slots_to_deactivate = NULL;
|
|
pending_streams = NULL;
|
|
/* This should never happen, this function is only called for streams present */
|
|
g_assert (FALSE);
|
|
} else {
|
|
if (collection->to_activate)
|
|
g_list_free (collection->to_activate);
|
|
collection->to_activate = g_list_copy (streams_to_reassign);
|
|
}
|
|
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
if (slots_to_activate && !slots_to_reassign) {
|
|
for (tmp = slots_to_activate; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
gst_pad_add_probe (slot->src_pad, GST_PAD_PROBE_TYPE_IDLE,
|
|
(GstPadProbeCallback) idle_reconfigure, slot, NULL);
|
|
}
|
|
}
|
|
|
|
/* For all streams to deactivate, add an idle probe where we will do
|
|
* the unassignment and switch over */
|
|
for (tmp = slots_to_reassign; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
gst_pad_add_probe (slot->src_pad, GST_PAD_PROBE_TYPE_IDLE,
|
|
(GstPadProbeCallback) mq_slot_unassign_probe, slot, NULL);
|
|
}
|
|
|
|
if (slots_to_deactivate)
|
|
g_list_free (slots_to_deactivate);
|
|
if (slots_to_activate)
|
|
g_list_free (slots_to_activate);
|
|
if (streams_to_reassign)
|
|
g_list_free (streams_to_reassign);
|
|
if (future_request_streams)
|
|
g_list_free (future_request_streams);
|
|
if (pending_streams)
|
|
g_list_free (pending_streams);
|
|
if (slots_to_reassign)
|
|
g_list_free (slots_to_reassign);
|
|
|
|
SELECTION_LOCK (dbin);
|
|
}
|
|
|
|
/*
|
|
* * event : (transfer full): The select streams event
|
|
*
|
|
* Handles a GST_EVENT_SELECT_STREAMS (from application or downstream)
|
|
*
|
|
* Returns: TRUE if the event was handled, or FALSE if it should be forwarded to
|
|
* the default handler.
|
|
*/
|
|
static gboolean
|
|
handle_select_streams (GstDecodebin3 * dbin, GstEvent * event)
|
|
{
|
|
GList *streams = NULL;
|
|
guint32 seqnum = gst_event_get_seqnum (event);
|
|
GList *tmp;
|
|
DecodebinCollection *collection = NULL;
|
|
|
|
if (dbin->upstream_handles_selection) {
|
|
GST_DEBUG_OBJECT (dbin, "Letting select-streams event flow upstream");
|
|
return FALSE;
|
|
}
|
|
|
|
gst_event_parse_select_streams (event, &streams);
|
|
if (streams == NULL) {
|
|
GST_DEBUG_OBJECT (dbin, "No streams in select streams");
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
}
|
|
|
|
SELECTION_LOCK (dbin);
|
|
/* Find the collection to which these list of streams apply */
|
|
for (tmp = dbin->collections; tmp; tmp = tmp->next) {
|
|
DecodebinCollection *cand = tmp->data;
|
|
if (are_all_streams_in_collection (cand->collection, streams)) {
|
|
collection = cand;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (collection == NULL) {
|
|
GST_WARNING_OBJECT (dbin, "Requested streams from no known collection");
|
|
goto beach;
|
|
}
|
|
|
|
if (seqnum == collection->seqnum) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Already handled/handling that SELECT_STREAMS event");
|
|
goto beach;
|
|
}
|
|
|
|
/* Update the requested list of streams */
|
|
if (collection->requested_selection) {
|
|
g_list_free_full (collection->requested_selection, g_free);
|
|
}
|
|
/* We give ownership of the streams to the DecodebinCollection */
|
|
collection->requested_selection = streams;
|
|
collection->seqnum = seqnum;
|
|
collection->posted_streams_selected_msg = FALSE;
|
|
|
|
/* If the collection is the current output one, handle the switch */
|
|
if (collection == dbin->output_collection)
|
|
handle_stream_switch (dbin);
|
|
|
|
beach:
|
|
SELECTION_UNLOCK (dbin);
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
ghost_pad_event_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
DecodebinOutputStream * output)
|
|
{
|
|
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
|
|
GstDecodebin3 *dbin = output->dbin;
|
|
GstEvent *event = GST_PAD_PROBE_INFO_EVENT (info);
|
|
|
|
GST_DEBUG_OBJECT (pad, "Got event %p %s", event, GST_EVENT_TYPE_NAME (event));
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_SELECT_STREAMS:
|
|
{
|
|
if (handle_select_streams (dbin, event))
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_decodebin3_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) element;
|
|
|
|
GST_DEBUG_OBJECT (element, "event %s", GST_EVENT_TYPE_NAME (event));
|
|
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_SELECT_STREAMS
|
|
&& handle_select_streams (dbin, event)) {
|
|
return TRUE;
|
|
}
|
|
|
|
return GST_ELEMENT_CLASS (parent_class)->send_event (element, event);
|
|
}
|
|
|
|
static void
|
|
mq_slot_free (GstDecodebin3 * dbin, MultiQueueSlot * slot)
|
|
{
|
|
if (slot->probe_id)
|
|
gst_pad_remove_probe (slot->src_pad, slot->probe_id);
|
|
if (slot->drop_probe_id)
|
|
gst_pad_remove_probe (slot->src_pad, slot->drop_probe_id);
|
|
if (slot->input) {
|
|
if (slot->input->srcpad)
|
|
gst_pad_unlink (slot->input->srcpad, slot->sink_pad);
|
|
}
|
|
|
|
gst_element_release_request_pad (dbin->multiqueue, slot->sink_pad);
|
|
gst_object_replace ((GstObject **) & slot->sink_pad, NULL);
|
|
gst_object_replace ((GstObject **) & slot->src_pad, NULL);
|
|
gst_object_replace ((GstObject **) & slot->active_stream, NULL);
|
|
g_free (slot);
|
|
}
|
|
|
|
/** db_output_stream_new:
|
|
* @dbin: A #GstDecodebin3
|
|
* @type: The #GstStreamType
|
|
*
|
|
* Creates a #DecodebinOutputStream for the given type and adds it to the list
|
|
* of available outputs.
|
|
*
|
|
* Returns: a #DecodebinOutputStream for the given @type.
|
|
*/
|
|
static DecodebinOutputStream *
|
|
db_output_stream_new (GstDecodebin3 * dbin, GstStreamType type)
|
|
{
|
|
DecodebinOutputStream *res = g_new0 (DecodebinOutputStream, 1);
|
|
gchar *pad_name;
|
|
const gchar *prefix;
|
|
GstStaticPadTemplate *templ;
|
|
GstPadTemplate *ptmpl;
|
|
guint32 *counter;
|
|
GstPad *internal_pad;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Created new output stream %p for type %s",
|
|
res, gst_stream_type_get_name (type));
|
|
|
|
res->type = type;
|
|
res->dbin = dbin;
|
|
res->decoder_latency = GST_CLOCK_TIME_NONE;
|
|
|
|
if (type & GST_STREAM_TYPE_VIDEO) {
|
|
templ = &video_src_template;
|
|
counter = &dbin->vpadcount;
|
|
prefix = "video";
|
|
} else if (type & GST_STREAM_TYPE_AUDIO) {
|
|
templ = &audio_src_template;
|
|
counter = &dbin->apadcount;
|
|
prefix = "audio";
|
|
} else if (type & GST_STREAM_TYPE_TEXT) {
|
|
templ = &text_src_template;
|
|
counter = &dbin->tpadcount;
|
|
prefix = "text";
|
|
} else {
|
|
templ = &src_template;
|
|
counter = &dbin->opadcount;
|
|
prefix = "src";
|
|
}
|
|
|
|
pad_name = g_strdup_printf ("%s_%u", prefix, *counter);
|
|
*counter += 1;
|
|
ptmpl = gst_static_pad_template_get (templ);
|
|
res->src_pad = gst_ghost_pad_new_no_target_from_template (pad_name, ptmpl);
|
|
gst_object_unref (ptmpl);
|
|
g_free (pad_name);
|
|
gst_pad_set_active (res->src_pad, TRUE);
|
|
/* Put an event probe on the internal proxy pad to detect upstream
|
|
* events */
|
|
internal_pad =
|
|
(GstPad *) gst_proxy_pad_get_internal ((GstProxyPad *) res->src_pad);
|
|
gst_pad_add_probe (internal_pad, GST_PAD_PROBE_TYPE_EVENT_UPSTREAM,
|
|
(GstPadProbeCallback) ghost_pad_event_probe, res, NULL);
|
|
gst_object_unref (internal_pad);
|
|
|
|
dbin->output_streams = g_list_append (dbin->output_streams, res);
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Created output stream %p (%s:%s)", res,
|
|
GST_DEBUG_PAD_NAME (res->src_pad));
|
|
|
|
return res;
|
|
}
|
|
|
|
/** db_output_stream_reset:
|
|
* @output: A #DecodebinOutputStream
|
|
*
|
|
* Resets the @output to be able to be re-used by another slot/format. If a
|
|
* decoder is present it will be disabled and removed
|
|
*/
|
|
static void
|
|
db_output_stream_reset (DecodebinOutputStream * output)
|
|
{
|
|
MultiQueueSlot *slot = output->slot;
|
|
|
|
GST_DEBUG_OBJECT (output->dbin, "Resetting %s:%s",
|
|
GST_DEBUG_PAD_NAME (output->src_pad));
|
|
|
|
/* Unlink decoder if needed */
|
|
if (output->linked && slot && output->decoder_sink) {
|
|
gst_pad_unlink (slot->src_pad, output->decoder_sink);
|
|
}
|
|
output->linked = FALSE;
|
|
|
|
if (slot && slot->drop_probe_id) {
|
|
gst_pad_remove_probe (slot->src_pad, slot->drop_probe_id);
|
|
slot->drop_probe_id = 0;
|
|
}
|
|
|
|
/* Remove/Reset pads */
|
|
gst_object_replace ((GstObject **) & output->decoder_sink, NULL);
|
|
decode_pad_set_target ((GstGhostPad *) output->src_pad, NULL);
|
|
gst_object_replace ((GstObject **) & output->decoder_src, NULL);
|
|
|
|
/* Remove decoder */
|
|
if (output->decoder) {
|
|
gst_element_set_locked_state (output->decoder, TRUE);
|
|
gst_element_set_state (output->decoder, GST_STATE_NULL);
|
|
gst_bin_remove ((GstBin *) output->dbin, output->decoder);
|
|
|
|
output->decoder = NULL;
|
|
output->decoder_latency = GST_CLOCK_TIME_NONE;
|
|
}
|
|
|
|
}
|
|
|
|
/** db_output_stream_free:
|
|
* @output: A #DecodebinOutputstream
|
|
*
|
|
* Releases the @output from the associated slot, removes the associated source
|
|
* ghost pad and frees any decoder
|
|
*/
|
|
static void
|
|
db_output_stream_free (DecodebinOutputStream * output)
|
|
{
|
|
GstDecodebin3 *dbin = output->dbin;
|
|
|
|
GST_DEBUG_OBJECT (output->src_pad, "Freeing");
|
|
|
|
db_output_stream_reset (output);
|
|
|
|
if (output->slot)
|
|
mq_slot_set_output (output->slot, NULL);
|
|
|
|
if (output->src_exposed) {
|
|
gst_element_remove_pad ((GstElement *) dbin, output->src_pad);
|
|
}
|
|
g_free (output);
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
gst_decodebin3_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) element;
|
|
GstStateChangeReturn ret;
|
|
|
|
/* Upwards */
|
|
switch (transition) {
|
|
default:
|
|
break;
|
|
}
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
if (ret == GST_STATE_CHANGE_FAILURE)
|
|
goto beach;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_decodebin3_reset (dbin);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
beach:
|
|
return ret;
|
|
}
|