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4b3798fedc
Fields related to stream handling (input_streams, output_streams, slots, guint slot_id) where used totally unprotected until know. This lead to several races, especially playing back RTSP streams. To protect those fields, the OBJECT_LOCK can not be used as we sometimes need to be able to post message on the bus while holding it. decodebin3 already has a lock to manage stream selection, and in the end it makes sense to protect all the stream management fields with the same lock which is why we reuse the SELECTION_LOCK here. https://bugzilla.gnome.org/show_bug.cgi?id=784012
2717 lines
87 KiB
C
2717 lines
87 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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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 "gstplayback.h"
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#include "gstplay-enum.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_STREAM 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 auxilliary 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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* <emphasis>decodebin3 is still experimental API and a technology preview.
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* Its behaviour and exposed API is subject to change.</emphasis>
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*
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*/
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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)
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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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* 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 reassign_slot().
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*
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* Based on those two principles, 3 "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) active_selection
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* List of streams that are exposed by decodebin
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* 3) to_activate
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* List of streams that will be moved to requested_selection in the
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* reassign_slot() method (i.e. once a stream was deactivated, and the output
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* was retargetted)
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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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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 : G_MAXUINT32) */
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/* FIXME : Needs to be resetted appropriately (when upstream changes ?) */
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guint32 current_group_id;
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/* End of variables protected by input_lock */
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GstElement *multiqueue;
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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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/* Active collection */
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GstStreamCollection *collection;
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/* requested selection of stream-id to activate post-multiqueue */
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GList *requested_selection;
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/* list of stream-id currently activated in output */
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GList *active_selection;
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/* List of stream-id that need to be activated (after a stream switch for ex) */
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GList *to_activate;
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/* Pending select streams event */
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guint32 select_streams_seqnum;
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/* pending list of streams to select (from downstream) */
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GList *pending_select_streams;
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/* TRUE if requested_selection was updated, will become FALSE once
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* it has fully transitioned to active */
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gboolean selection_updated;
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/* End of variables protected by selection_lock */
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/* List of pending collections.
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* FIXME : Is this really needed ? */
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GList *pending_collection;
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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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};
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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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guint group_id;
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GstElement *parsebin;
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gulong pad_added_sigid;
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gulong pad_removed_sigid;
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/* HACK : Remove these fields */
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/* List of PendingPad structures */
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GList *pending_pads;
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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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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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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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/* keyframe dropping probe */
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gulong drop_probe_id;
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};
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/* Pending pads from parsebin */
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typedef struct _PendingPad
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{
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GstDecodebin3 *dbin;
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DecodebinInput *input;
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GstPad *pad;
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gulong buffer_probe;
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gulong event_probe;
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gboolean saw_eos;
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} PendingPad;
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/* properties */
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#define DEFAULT_CAPS (gst_static_caps_get (&default_raw_caps))
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enum
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{
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PROP_0,
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PROP_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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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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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 =
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GST_STATIC_PAD_TEMPLATE ("sink_%u",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate video_src_template =
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GST_STATIC_PAD_TEMPLATE ("video_%u",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate audio_src_template =
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GST_STATIC_PAD_TEMPLATE ("audio_%u",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate text_src_template =
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GST_STATIC_PAD_TEMPLATE ("text_%u",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src_%u",
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GST_PAD_SRC,
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GST_PAD_SOMETIMES,
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GST_STATIC_CAPS_ANY);
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static void gst_decodebin3_dispose (GObject * object);
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static void gst_decodebin3_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_decodebin3_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static gboolean parsebin_autoplug_continue_cb (GstElement *
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parsebin, GstPad * pad, GstCaps * caps, GstDecodebin3 * dbin);
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static gint
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gst_decodebin3_select_stream (GstDecodebin3 * dbin,
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GstStreamCollection * collection, GstStream * stream)
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{
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GST_LOG_OBJECT (dbin, "default select-stream, returning -1");
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return -1;
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}
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static GstPad *gst_decodebin3_request_new_pad (GstElement * element,
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GstPadTemplate * temp, const gchar * name, const GstCaps * caps);
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static void gst_decodebin3_handle_message (GstBin * bin, GstMessage * message);
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static GstStateChangeReturn gst_decodebin3_change_state (GstElement * element,
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GstStateChange transition);
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static gboolean gst_decodebin3_send_event (GstElement * element,
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GstEvent * event);
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static void gst_decode_bin_update_factories_list (GstDecodebin3 * dbin);
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#if 0
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static gboolean have_factory (GstDecodebin3 * dbin, GstCaps * caps,
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GstElementFactoryListType ftype);
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#endif
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static void free_input (GstDecodebin3 * dbin, DecodebinInput * input);
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static void free_input_async (GstDecodebin3 * dbin, DecodebinInput * input);
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static DecodebinInput *create_new_input (GstDecodebin3 * dbin, gboolean main);
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static gboolean set_input_group_id (DecodebinInput * input, guint32 * group_id);
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static void reconfigure_output_stream (DecodebinOutputStream * output,
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MultiQueueSlot * slot);
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static void free_output_stream (GstDecodebin3 * dbin,
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DecodebinOutputStream * output);
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static DecodebinOutputStream *create_output_stream (GstDecodebin3 * dbin,
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GstStreamType type);
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static GstPadProbeReturn slot_unassign_probe (GstPad * pad,
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GstPadProbeInfo * info, MultiQueueSlot * slot);
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static gboolean reassign_slot (GstDecodebin3 * dbin, MultiQueueSlot * slot);
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static MultiQueueSlot *get_slot_for_input (GstDecodebin3 * dbin,
|
|
DecodebinInputStream * input);
|
|
static void link_input_to_slot (DecodebinInputStream * input,
|
|
MultiQueueSlot * slot);
|
|
static void free_multiqueue_slot (GstDecodebin3 * dbin, MultiQueueSlot * slot);
|
|
static void free_multiqueue_slot_async (GstDecodebin3 * dbin,
|
|
MultiQueueSlot * slot);
|
|
|
|
static GstStreamCollection *get_merged_collection (GstDecodebin3 * dbin);
|
|
static void update_requested_selection (GstDecodebin3 * dbin);
|
|
|
|
/* FIXME: Really make all the parser stuff a self-contained helper object */
|
|
#include "gstdecodebin3-parse.c"
|
|
|
|
static gboolean
|
|
_gst_int_accumulator (GSignalInvocationHint * ihint,
|
|
GValue * return_accu, const GValue * handler_return, gpointer dummy)
|
|
{
|
|
gint res = g_value_get_int (handler_return);
|
|
|
|
if (!(ihint->run_type & G_SIGNAL_RUN_CLEANUP))
|
|
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->set_property = gst_decodebin3_set_property;
|
|
gobject_klass->get_property = gst_decodebin3_get_property;
|
|
|
|
/* FIXME : ADD PROPERTIES ! */
|
|
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));
|
|
|
|
/* FIXME : ADD SIGNALS ! */
|
|
/**
|
|
* 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.
|
|
*
|
|
* 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, g_cclosure_marshal_generic,
|
|
G_TYPE_INT, 2, GST_TYPE_STREAM_COLLECTION, GST_TYPE_STREAM);
|
|
|
|
|
|
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);
|
|
|
|
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 = create_new_input (dbin, TRUE);
|
|
|
|
dbin->multiqueue = gst_element_factory_make ("multiqueue", NULL);
|
|
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 = G_MAXUINT32;
|
|
|
|
g_mutex_init (&dbin->factories_lock);
|
|
g_mutex_init (&dbin->selection_lock);
|
|
g_mutex_init (&dbin->input_lock);
|
|
|
|
dbin->caps = gst_static_caps_get (&default_raw_caps);
|
|
|
|
GST_OBJECT_FLAG_SET (dbin, GST_BIN_FLAG_STREAMS_AWARE);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_dispose (GObject * object)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) object;
|
|
GList *walk, *next;
|
|
|
|
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);
|
|
g_list_free_full (dbin->requested_selection, g_free);
|
|
g_list_free (dbin->active_selection);
|
|
g_list_free (dbin->to_activate);
|
|
g_list_free (dbin->pending_select_streams);
|
|
g_clear_object (&dbin->collection);
|
|
|
|
free_input (dbin, dbin->main_input);
|
|
|
|
for (walk = dbin->other_inputs; walk; walk = next) {
|
|
DecodebinInput *input = walk->data;
|
|
|
|
next = g_list_next (walk);
|
|
|
|
free_input (dbin, input);
|
|
dbin->other_inputs = g_list_delete_link (dbin->other_inputs, walk);
|
|
}
|
|
|
|
G_OBJECT_CLASS (parent_class)->dispose (object);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) object;
|
|
|
|
/* FIXME : IMPLEMENT */
|
|
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;
|
|
|
|
/* FIXME : IMPLEMENT */
|
|
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;
|
|
}
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* This method should be called whenever a STREAM_START event
|
|
* comes out of a given parsebin.
|
|
* The caller shall replace the group_id if the function returns TRUE */
|
|
static gboolean
|
|
set_input_group_id (DecodebinInput * input, guint32 * group_id)
|
|
{
|
|
GstDecodebin3 *dbin = input->dbin;
|
|
|
|
if (input->group_id != *group_id) {
|
|
if (input->group_id != G_MAXUINT32)
|
|
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) {
|
|
if (dbin->current_group_id == G_MAXUINT32) {
|
|
GST_DEBUG_OBJECT (dbin, "Setting current group id to %" G_GUINT32_FORMAT,
|
|
*group_id);
|
|
dbin->current_group_id = *group_id;
|
|
}
|
|
*group_id = dbin->current_group_id;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Call with INPUT_LOCK taken */
|
|
static gboolean
|
|
ensure_input_parsebin (GstDecodebin3 * dbin, DecodebinInput * input)
|
|
{
|
|
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);
|
|
g_signal_connect (input->parsebin, "autoplug-continue",
|
|
(GCallback) parsebin_autoplug_continue_cb, dbin);
|
|
}
|
|
|
|
if (GST_OBJECT_PARENT (GST_OBJECT (input->parsebin)) != GST_OBJECT (dbin)) {
|
|
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);
|
|
|
|
return TRUE;
|
|
|
|
/* ERRORS */
|
|
no_parsebin:
|
|
{
|
|
gst_element_post_message ((GstElement *) dbin,
|
|
gst_missing_element_message_new ((GstElement *) dbin, "parsebin"));
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
static GstPadLinkReturn
|
|
gst_decodebin3_input_pad_link (GstPad * pad, GstObject * parent, GstPad * peer)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) parent;
|
|
GstPadLinkReturn res = GST_PAD_LINK_OK;
|
|
DecodebinInput *input;
|
|
|
|
GST_LOG_OBJECT (parent, "Got link on input pad %" GST_PTR_FORMAT
|
|
". Creating parsebin if needed", pad);
|
|
|
|
if ((input = g_object_get_data (G_OBJECT (pad), "decodebin.input")) == NULL)
|
|
goto fail;
|
|
|
|
INPUT_LOCK (dbin);
|
|
if (!ensure_input_parsebin (dbin, input))
|
|
res = GST_PAD_LINK_REFUSED;
|
|
INPUT_UNLOCK (dbin);
|
|
|
|
return res;
|
|
fail:
|
|
GST_ERROR_OBJECT (parent, "Failed to retrieve input state from ghost pad");
|
|
return GST_PAD_LINK_REFUSED;
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_input_pad_unlink (GstPad * pad, GstObject * parent)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) parent;
|
|
DecodebinInput *input;
|
|
|
|
GST_LOG_OBJECT (parent, "Got unlink on input pad %" GST_PTR_FORMAT
|
|
". Removing parsebin.", pad);
|
|
|
|
if ((input = g_object_get_data (G_OBJECT (pad), "decodebin.input")) == NULL)
|
|
goto fail;
|
|
|
|
INPUT_LOCK (dbin);
|
|
if (input->parsebin == NULL) {
|
|
INPUT_UNLOCK (dbin);
|
|
return;
|
|
}
|
|
|
|
if (GST_OBJECT_PARENT (GST_OBJECT (input->parsebin)) == GST_OBJECT (dbin)) {
|
|
GstStreamCollection *collection = NULL;
|
|
gulong probe_id = gst_pad_add_probe (input->parsebin_sink,
|
|
GST_PAD_PROBE_TYPE_QUERY_UPSTREAM,
|
|
(GstPadProbeCallback) query_duration_drop_probe, input, NULL);
|
|
|
|
/* 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;
|
|
}
|
|
|
|
SELECTION_LOCK (dbin);
|
|
collection = get_merged_collection (dbin);
|
|
if (collection && collection != dbin->collection) {
|
|
GstMessage *msg;
|
|
GST_DEBUG_OBJECT (dbin, "Update Stream Collection");
|
|
|
|
if (dbin->collection)
|
|
gst_object_unref (dbin->collection);
|
|
dbin->collection = collection;
|
|
|
|
msg =
|
|
gst_message_new_stream_collection ((GstObject *) dbin,
|
|
dbin->collection);
|
|
|
|
SELECTION_UNLOCK (dbin);
|
|
gst_element_post_message (GST_ELEMENT_CAST (dbin), msg);
|
|
update_requested_selection (dbin);
|
|
} else
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
gst_bin_remove (GST_BIN (dbin), input->parsebin);
|
|
gst_element_set_state (input->parsebin, GST_STATE_NULL);
|
|
g_signal_handler_disconnect (input->parsebin, input->pad_removed_sigid);
|
|
g_signal_handler_disconnect (input->parsebin, input->pad_added_sigid);
|
|
gst_pad_remove_probe (input->parsebin_sink, probe_id);
|
|
gst_object_unref (input->parsebin);
|
|
gst_object_unref (input->parsebin_sink);
|
|
|
|
input->parsebin = NULL;
|
|
input->parsebin_sink = NULL;
|
|
|
|
if (!input->is_main) {
|
|
dbin->other_inputs = g_list_remove (dbin->other_inputs, input);
|
|
free_input_async (dbin, input);
|
|
}
|
|
}
|
|
INPUT_UNLOCK (dbin);
|
|
return;
|
|
|
|
fail:
|
|
GST_ERROR_OBJECT (parent, "Failed to retrieve input state from ghost pad");
|
|
return;
|
|
}
|
|
|
|
static void
|
|
free_input (GstDecodebin3 * dbin, DecodebinInput * input)
|
|
{
|
|
GST_DEBUG ("Freeing input %p", input);
|
|
gst_ghost_pad_set_target (GST_GHOST_PAD (input->ghost_sink), NULL);
|
|
gst_element_remove_pad (GST_ELEMENT (dbin), input->ghost_sink);
|
|
if (input->parsebin) {
|
|
g_signal_handler_disconnect (input->parsebin, input->pad_removed_sigid);
|
|
g_signal_handler_disconnect (input->parsebin, input->pad_added_sigid);
|
|
gst_element_set_state (input->parsebin, GST_STATE_NULL);
|
|
gst_object_unref (input->parsebin);
|
|
gst_object_unref (input->parsebin_sink);
|
|
}
|
|
if (input->collection)
|
|
gst_object_unref (input->collection);
|
|
g_free (input);
|
|
}
|
|
|
|
static void
|
|
free_input_async (GstDecodebin3 * dbin, DecodebinInput * input)
|
|
{
|
|
GST_LOG_OBJECT (dbin, "pushing input %p on thread pool to free", input);
|
|
gst_element_call_async (GST_ELEMENT_CAST (dbin),
|
|
(GstElementCallAsyncFunc) free_input, input, NULL);
|
|
}
|
|
|
|
/* Call with INPUT_LOCK taken */
|
|
static DecodebinInput *
|
|
create_new_input (GstDecodebin3 * dbin, gboolean main)
|
|
{
|
|
DecodebinInput *input;
|
|
|
|
input = g_new0 (DecodebinInput, 1);
|
|
input->dbin = dbin;
|
|
input->is_main = main;
|
|
input->group_id = G_MAXUINT32;
|
|
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);
|
|
}
|
|
g_object_set_data (G_OBJECT (input->ghost_sink), "decodebin.input", input);
|
|
gst_pad_set_link_function (input->ghost_sink, gst_decodebin3_input_pad_link);
|
|
gst_pad_set_unlink_function (input->ghost_sink,
|
|
gst_decodebin3_input_pad_unlink);
|
|
|
|
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_LOCK (dbin);
|
|
input = create_new_input (dbin, FALSE);
|
|
if (input) {
|
|
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 void
|
|
update_requested_selection (GstDecodebin3 * dbin)
|
|
{
|
|
guint i, nb;
|
|
GList *tmp = NULL;
|
|
GstStreamType used_types = 0;
|
|
GstStreamCollection *collection;
|
|
|
|
/* 1. Is there a pending SELECT_STREAMS we can return straight away since
|
|
* the switch handler will take care of the pending selection */
|
|
SELECTION_LOCK (dbin);
|
|
if (dbin->pending_select_streams) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"No need to create pending selection, SELECT_STREAMS underway");
|
|
goto beach;
|
|
}
|
|
|
|
collection = dbin->collection;
|
|
if (G_UNLIKELY (collection == NULL)) {
|
|
GST_DEBUG_OBJECT (dbin, "No current GstStreamCollection");
|
|
goto beach;
|
|
}
|
|
nb = gst_stream_collection_get_size (collection);
|
|
|
|
/* 2. If not, are we in EXPOSE_ALL_MODE ? If so, match everything */
|
|
GST_FIXME_OBJECT (dbin, "Implement EXPOSE_ALL_MODE");
|
|
|
|
/* 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 (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, collection, stream,
|
|
&request);
|
|
GST_DEBUG_OBJECT (dbin, "stream %s , request:%d", sid, request);
|
|
if (request == 1 || (request == -1
|
|
&& (stream_in_list (dbin->requested_selection, sid)
|
|
|| stream_in_list (dbin->active_selection, 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 not, match one stream of each type */
|
|
for (i = 0; i < nb; i++) {
|
|
GstStream *stream = gst_stream_collection_get_stream (collection, i);
|
|
GstStreamType curtype = gst_stream_get_stream_type (stream);
|
|
if (!(used_types & curtype)) {
|
|
const gchar *sid = gst_stream_get_stream_id (stream);
|
|
GST_DEBUG_OBJECT (dbin, "Selecting stream '%s' of type %s",
|
|
sid, gst_stream_type_get_name (curtype));
|
|
tmp = g_list_append (tmp, (gchar *) sid);
|
|
used_types |= curtype;
|
|
}
|
|
}
|
|
|
|
beach:
|
|
/* Finally set the requested selection */
|
|
if (tmp) {
|
|
if (dbin->requested_selection) {
|
|
GST_FIXME_OBJECT (dbin,
|
|
"Replacing non-NULL requested_selection, what should we do ??");
|
|
g_list_free_full (dbin->requested_selection, g_free);
|
|
}
|
|
dbin->requested_selection =
|
|
g_list_copy_deep (tmp, (GCopyFunc) g_strdup, NULL);
|
|
dbin->selection_updated = TRUE;
|
|
g_list_free (tmp);
|
|
}
|
|
SELECTION_UNLOCK (dbin);
|
|
}
|
|
|
|
/* Call with INPUT_LOCK taken */
|
|
static GstStreamCollection *
|
|
get_merged_collection (GstDecodebin3 * dbin)
|
|
{
|
|
gboolean needs_merge = FALSE;
|
|
GstStreamCollection *res = NULL;
|
|
GList *tmp;
|
|
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;
|
|
if (input->collection) {
|
|
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);
|
|
gst_stream_collection_add_stream (res, gst_object_ref (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);
|
|
gst_stream_collection_add_stream (res, gst_object_ref (stream));
|
|
}
|
|
}
|
|
}
|
|
|
|
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 (GstDecodebin3 * dbin, gchar * sid)
|
|
{
|
|
guint i, len;
|
|
|
|
if (dbin->collection == NULL)
|
|
return NULL;
|
|
len = gst_stream_collection_get_size (dbin->collection);
|
|
for (i = 0; i < len; i++) {
|
|
GstStream *stream = gst_stream_collection_get_stream (dbin->collection, i);
|
|
const gchar *osid = gst_stream_get_stream_id (stream);
|
|
if (!g_strcmp0 (sid, osid))
|
|
return osid;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Call with INPUT_LOCK taken */
|
|
static void
|
|
handle_stream_collection (GstDecodebin3 * dbin,
|
|
GstStreamCollection * collection, GstElement * child)
|
|
{
|
|
#ifndef GST_DISABLE_GST_DEBUG
|
|
const gchar *upstream_id;
|
|
guint i;
|
|
#endif
|
|
DecodebinInput *input = find_message_parsebin (dbin, child);
|
|
|
|
if (!input) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Couldn't find corresponding input, most likely shutting down");
|
|
return;
|
|
}
|
|
|
|
/* Replace collection in input */
|
|
if (input->collection)
|
|
gst_object_unref (input->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);
|
|
|
|
#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
|
|
|
|
/* Store collection for later usage */
|
|
SELECTION_LOCK (dbin);
|
|
if (dbin->collection == NULL) {
|
|
dbin->collection = collection;
|
|
} else {
|
|
/* We need to check who emitted this collection (the owner).
|
|
* If we already had a collection from that user, this one is an update,
|
|
* that is to say that we need to figure out how we are going to re-use
|
|
* the streams/slot */
|
|
GST_FIXME_OBJECT (dbin, "New collection but already had one ...");
|
|
/* FIXME : When do we switch from pending collection to active collection ?
|
|
* When all streams from active collection are drained in multiqueue output ? */
|
|
gst_object_unref (dbin->collection);
|
|
dbin->collection = collection;
|
|
/* dbin->pending_collection = */
|
|
/* g_list_append (dbin->pending_collection, collection); */
|
|
}
|
|
SELECTION_UNLOCK (dbin);
|
|
}
|
|
|
|
static void
|
|
gst_decodebin3_handle_message (GstBin * bin, GstMessage * message)
|
|
{
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) bin;
|
|
gboolean posting_collection = FALSE;
|
|
|
|
GST_DEBUG_OBJECT (bin, "Got Message %s", GST_MESSAGE_TYPE_NAME (message));
|
|
|
|
switch (GST_MESSAGE_TYPE (message)) {
|
|
case GST_MESSAGE_STREAM_COLLECTION:
|
|
{
|
|
GstStreamCollection *collection = NULL;
|
|
gst_message_parse_stream_collection (message, &collection);
|
|
if (collection) {
|
|
INPUT_LOCK (dbin);
|
|
handle_stream_collection (dbin, collection,
|
|
(GstElement *) GST_MESSAGE_SRC (message));
|
|
posting_collection = TRUE;
|
|
INPUT_UNLOCK (dbin);
|
|
}
|
|
|
|
SELECTION_LOCK (dbin);
|
|
if (dbin->collection && collection != dbin->collection) {
|
|
/* Replace collection message, we most likely aggregated it */
|
|
GstMessage *new_msg;
|
|
new_msg =
|
|
gst_message_new_stream_collection ((GstObject *) dbin,
|
|
dbin->collection);
|
|
gst_message_unref (message);
|
|
message = new_msg;
|
|
}
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
if (collection)
|
|
gst_object_unref (collection);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
GST_BIN_CLASS (parent_class)->handle_message (bin, message);
|
|
|
|
if (posting_collection) {
|
|
/* Figure out a selection for that collection */
|
|
update_requested_selection (dbin);
|
|
}
|
|
}
|
|
|
|
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) {
|
|
GstStream *tstream = output->slot->active_stream;
|
|
if (!stream_in_list (dbin->requested_selection,
|
|
(gchar *) gst_stream_get_stream_id (tstream))) {
|
|
return output;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* Give a certain slot, figure out if it should be linked to an
|
|
* output stream
|
|
* CALL WITH SELECTION LOCK TAKEN !*/
|
|
static DecodebinOutputStream *
|
|
get_output_for_slot (MultiQueueSlot * slot)
|
|
{
|
|
GstDecodebin3 *dbin = slot->dbin;
|
|
DecodebinOutputStream *output = NULL;
|
|
const gchar *stream_id;
|
|
GstCaps *caps;
|
|
gchar *id_in_list = NULL;
|
|
|
|
/* If we already have a configured output, just use it */
|
|
if (slot->output != NULL)
|
|
return slot->output;
|
|
|
|
/*
|
|
* FIXME
|
|
*
|
|
* This method needs to be split into multiple parts
|
|
*
|
|
* 1) Figure out whether stream should be exposed or not
|
|
* This is based on autoplug-continue, EXPOSE_ALL_MODE, or presence
|
|
* in the default stream attribution
|
|
*
|
|
* 2) Figure out whether an output stream should be created, whether
|
|
* we can re-use the output stream already linked to the slot, or
|
|
* whether we need to get re-assigned another (currently used) output
|
|
* stream.
|
|
*/
|
|
|
|
stream_id = gst_stream_get_stream_id (slot->active_stream);
|
|
caps = gst_stream_get_caps (slot->active_stream);
|
|
GST_DEBUG_OBJECT (dbin, "stream %s , %" GST_PTR_FORMAT, stream_id, caps);
|
|
gst_caps_unref (caps);
|
|
|
|
/* 0. Emit autoplug-continue signal for pending caps ? */
|
|
GST_FIXME_OBJECT (dbin, "emit autoplug-continue");
|
|
|
|
/* 1. if in EXPOSE_ALL_MODE, just accept */
|
|
GST_FIXME_OBJECT (dbin, "Handle EXPOSE_ALL_MODE");
|
|
|
|
#if 0
|
|
/* FIXME : The idea around this was to avoid activating a stream for
|
|
* which we have no decoder. Unfortunately it is way too
|
|
* expensive. Need to figure out a better solution */
|
|
/* 2. Is there a potential decoder (if one is required) */
|
|
if (!gst_caps_can_intersect (caps, dbin->caps)
|
|
&& !have_factory (dbin, (GstCaps *) caps,
|
|
GST_ELEMENT_FACTORY_TYPE_DECODER)) {
|
|
GST_WARNING_OBJECT (dbin, "Don't have a decoder for %" GST_PTR_FORMAT,
|
|
caps);
|
|
SELECTION_UNLOCK (dbin);
|
|
gst_element_post_message (GST_ELEMENT_CAST (dbin),
|
|
gst_missing_decoder_message_new (GST_ELEMENT_CAST (dbin), caps));
|
|
SELECTION_LOCK (dbin);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
/* 3. In default mode check if we should expose */
|
|
id_in_list = (gchar *) stream_in_list (dbin->requested_selection, stream_id);
|
|
if (id_in_list) {
|
|
/* 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) {
|
|
/* Move this output from its current slot to this slot */
|
|
dbin->to_activate =
|
|
g_list_append (dbin->to_activate, (gchar *) stream_id);
|
|
dbin->requested_selection =
|
|
g_list_remove (dbin->requested_selection, id_in_list);
|
|
g_free (id_in_list);
|
|
SELECTION_UNLOCK (dbin);
|
|
gst_pad_add_probe (output->slot->src_pad, GST_PAD_PROBE_TYPE_IDLE,
|
|
(GstPadProbeCallback) slot_unassign_probe, output->slot, NULL);
|
|
SELECTION_LOCK (dbin);
|
|
return NULL;
|
|
}
|
|
|
|
output = create_output_stream (dbin, slot->type);
|
|
output->slot = slot;
|
|
GST_DEBUG ("Linking slot %p to new output %p", slot, output);
|
|
slot->output = output;
|
|
dbin->active_selection =
|
|
g_list_append (dbin->active_selection, (gchar *) stream_id);
|
|
} else
|
|
GST_DEBUG ("Not creating any output for slot %p", slot);
|
|
|
|
return output;
|
|
}
|
|
|
|
/* Returns SELECTED_STREAMS message if active_selection is equal to
|
|
* requested_selection, else NULL.
|
|
* Must be called with LOCK taken */
|
|
static GstMessage *
|
|
is_selection_done (GstDecodebin3 * dbin)
|
|
{
|
|
GList *tmp;
|
|
GstMessage *msg;
|
|
|
|
if (!dbin->selection_updated)
|
|
return NULL;
|
|
|
|
GST_LOG_OBJECT (dbin, "Checking");
|
|
|
|
if (dbin->to_activate != NULL) {
|
|
GST_DEBUG ("Still have streams to activate");
|
|
return NULL;
|
|
}
|
|
for (tmp = dbin->requested_selection; tmp; tmp = tmp->next) {
|
|
GST_DEBUG ("Checking requested stream %s", (gchar *) tmp->data);
|
|
if (!stream_in_list (dbin->active_selection, (gchar *) tmp->data)) {
|
|
GST_DEBUG ("Not in active selection, returning");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Selection active, creating message");
|
|
|
|
/* We are completely active */
|
|
msg = gst_message_new_streams_selected ((GstObject *) dbin, dbin->collection);
|
|
GST_MESSAGE_SEQNUM (msg) = dbin->select_streams_seqnum;
|
|
for (tmp = dbin->output_streams; tmp; tmp = tmp->next) {
|
|
DecodebinOutputStream *output = (DecodebinOutputStream *) tmp->data;
|
|
if (output->slot) {
|
|
GST_DEBUG_OBJECT (dbin, "Adding stream %s",
|
|
gst_stream_get_stream_id (output->slot->active_stream));
|
|
|
|
gst_message_streams_selected_add (msg, output->slot->active_stream);
|
|
} else
|
|
GST_WARNING_OBJECT (dbin, "No valid slot for output %p", output);
|
|
}
|
|
dbin->selection_updated = FALSE;
|
|
return msg;
|
|
}
|
|
|
|
/* Must be called with SELECTION_LOCK taken */
|
|
static void
|
|
check_all_slot_for_eos (GstDecodebin3 * dbin)
|
|
{
|
|
gboolean all_drained = TRUE;
|
|
GList *iter;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "check slot for eos");
|
|
|
|
for (iter = dbin->slots; iter; iter = iter->next) {
|
|
MultiQueueSlot *slot = iter->data;
|
|
|
|
if (!slot->output)
|
|
continue;
|
|
|
|
if (slot->is_drained) {
|
|
GST_DEBUG_OBJECT (slot->sink_pad, "slot %p is draned", slot);
|
|
continue;
|
|
}
|
|
|
|
all_drained = FALSE;
|
|
break;
|
|
}
|
|
|
|
if (all_drained) {
|
|
INPUT_LOCK (dbin);
|
|
if (!pending_pads_are_eos (dbin->main_input))
|
|
all_drained = FALSE;
|
|
|
|
if (all_drained) {
|
|
for (iter = dbin->other_inputs; iter; iter = iter->next) {
|
|
if (!pending_pads_are_eos ((DecodebinInput *) iter->data)) {
|
|
all_drained = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
INPUT_UNLOCK (dbin);
|
|
}
|
|
|
|
if (all_drained) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"All active slots are drained, and no pending input, push EOS");
|
|
|
|
for (iter = dbin->input_streams; iter; iter = iter->next) {
|
|
DecodebinInputStream *input = (DecodebinInputStream *) iter->data;
|
|
GstPad *peer = gst_pad_get_peer (input->srcpad);
|
|
|
|
/* Send EOS and then remove elements */
|
|
if (peer) {
|
|
gst_pad_send_event (peer, gst_event_new_eos ());
|
|
gst_object_unref (peer);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
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:
|
|
{
|
|
GstStream *stream = NULL;
|
|
const gchar *stream_id;
|
|
|
|
gst_event_parse_stream (ev, &stream);
|
|
if (stream == NULL) {
|
|
GST_ERROR_OBJECT (pad,
|
|
"Got a STREAM_START event without a GstStream");
|
|
break;
|
|
}
|
|
slot->is_drained = FALSE;
|
|
stream_id = gst_stream_get_stream_id (stream);
|
|
GST_DEBUG_OBJECT (pad, "Stream Start '%s'", stream_id);
|
|
if (slot->active_stream == NULL) {
|
|
slot->active_stream = stream;
|
|
} else if (slot->active_stream != stream) {
|
|
GST_FIXME_OBJECT (pad, "Handle stream changes (%s => %s) !",
|
|
gst_stream_get_stream_id (slot->active_stream),
|
|
gst_stream_get_stream_id (stream));
|
|
gst_object_unref (slot->active_stream);
|
|
slot->active_stream = stream;
|
|
} else
|
|
gst_object_unref (stream);
|
|
#if 0 /* Disabled because stream-start is pushed for every buffer on every unlinked pad */
|
|
{
|
|
gboolean is_active, is_requested;
|
|
/* Quick check to see if we're in the current selection */
|
|
/* FIXME : Re-check all slot<=>output mappings based on requested_selection */
|
|
SELECTION_LOCK (dbin);
|
|
GST_DEBUG_OBJECT (dbin, "Checking active selection");
|
|
is_active = stream_in_list (dbin->active_selection, stream_id);
|
|
GST_DEBUG_OBJECT (dbin, "Checking requested selection");
|
|
is_requested = stream_in_list (dbin->requested_selection, stream_id);
|
|
SELECTION_UNLOCK (dbin);
|
|
if (is_active)
|
|
GST_DEBUG_OBJECT (pad, "Slot in ACTIVE selection (output:%p)",
|
|
slot->output);
|
|
if (is_requested)
|
|
GST_DEBUG_OBJECT (pad, "Slot in REQUESTED selection (output:%p)",
|
|
slot->output);
|
|
else if (slot->output) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Slot needs to be deactivated ? It's no longer in requested selection");
|
|
} else if (!is_active)
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Slot in neither active nor requested selection");
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
/* Configure the output slot if needed */
|
|
DecodebinOutputStream *output;
|
|
GstMessage *msg = NULL;
|
|
SELECTION_LOCK (dbin);
|
|
output = get_output_for_slot (slot);
|
|
if (output) {
|
|
reconfigure_output_stream (output, slot);
|
|
msg = is_selection_done (dbin);
|
|
}
|
|
SELECTION_UNLOCK (dbin);
|
|
if (msg)
|
|
gst_element_post_message ((GstElement *) slot->dbin, msg);
|
|
}
|
|
break;
|
|
case GST_EVENT_EOS:
|
|
/* FIXME : Figure out */
|
|
GST_FIXME_OBJECT (pad, "EOS on multiqueue source pad. input:%p",
|
|
slot->input);
|
|
slot->is_drained = TRUE;
|
|
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, ev);
|
|
gst_object_unref (peer);
|
|
} else {
|
|
gst_event_unref (ev);
|
|
}
|
|
SELECTION_LOCK (dbin);
|
|
/* FIXME : Shouldn't we try to re-assign the output instead of just
|
|
* removing it ? */
|
|
/* Remove the output */
|
|
if (slot->output) {
|
|
DecodebinOutputStream *output = slot->output;
|
|
dbin->output_streams = g_list_remove (dbin->output_streams, output);
|
|
free_output_stream (dbin, output);
|
|
}
|
|
slot->probe_id = 0;
|
|
dbin->slots = g_list_remove (dbin->slots, slot);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
free_multiqueue_slot_async (dbin, slot);
|
|
ret = GST_PAD_PROBE_REMOVE;
|
|
}
|
|
break;
|
|
case GST_EVENT_CUSTOM_DOWNSTREAM:
|
|
if (gst_event_has_name (ev, "decodebin3-custom-eos")) {
|
|
slot->is_drained = TRUE;
|
|
ret = GST_PAD_PROBE_DROP;
|
|
SELECTION_LOCK (dbin);
|
|
if (slot->input == NULL) {
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Got custom-eos from null input stream, remove output stream");
|
|
/* Remove the output */
|
|
if (slot->output) {
|
|
DecodebinOutputStream *output = slot->output;
|
|
dbin->output_streams =
|
|
g_list_remove (dbin->output_streams, output);
|
|
free_output_stream (dbin, output);
|
|
}
|
|
slot->probe_id = 0;
|
|
dbin->slots = g_list_remove (dbin->slots, slot);
|
|
free_multiqueue_slot_async (dbin, slot);
|
|
ret = GST_PAD_PROBE_REMOVE;
|
|
} else {
|
|
check_all_slot_for_eos (dbin);
|
|
}
|
|
SELECTION_UNLOCK (dbin);
|
|
}
|
|
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_get_request_pad (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;
|
|
}
|
|
}
|
|
|
|
/* Must be called with SELECTION_LOCK */
|
|
static MultiQueueSlot *
|
|
get_slot_for_input (GstDecodebin3 * dbin, DecodebinInputStream * input)
|
|
{
|
|
GList *tmp;
|
|
MultiQueueSlot *empty_slot = NULL;
|
|
GstStreamType input_type = 0;
|
|
gchar *stream_id = NULL;
|
|
|
|
GST_DEBUG_OBJECT (dbin, "input %p (stream %p %s)",
|
|
input, input->active_stream,
|
|
input->
|
|
active_stream ? gst_stream_get_stream_id (input->active_stream) : "");
|
|
|
|
if (input->active_stream) {
|
|
input_type = gst_stream_get_stream_type (input->active_stream);
|
|
stream_id = (gchar *) gst_stream_get_stream_id (input->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) {
|
|
GST_DEBUG_OBJECT (dbin, "Returning already specified slot %d", slot->id);
|
|
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) {
|
|
gchar *ostream_id =
|
|
(gchar *) gst_stream_get_stream_id (slot->active_stream);
|
|
GST_DEBUG_OBJECT (dbin, "Checking slot %d %s against %s", slot->id,
|
|
ostream_id, stream_id);
|
|
if (!g_strcmp0 (stream_id, ostream_id))
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (empty_slot) {
|
|
GST_DEBUG_OBJECT (dbin, "Re-using existing unused slot %d", empty_slot->id);
|
|
empty_slot->input = input;
|
|
return empty_slot;
|
|
}
|
|
|
|
if (input_type)
|
|
return create_new_slot (dbin, input_type);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
link_input_to_slot (DecodebinInputStream * input, MultiQueueSlot * slot)
|
|
{
|
|
if (slot->input != NULL && slot->input != input) {
|
|
GST_ERROR_OBJECT (slot->dbin,
|
|
"Trying to link input to an already used slot");
|
|
return;
|
|
}
|
|
gst_pad_link_full (input->srcpad, slot->sink_pad, GST_PAD_LINK_CHECK_NOTHING);
|
|
slot->pending_stream = input->active_stream;
|
|
slot->input = input;
|
|
}
|
|
|
|
#if 0
|
|
static gboolean
|
|
have_factory (GstDecodebin3 * dbin, GstCaps * caps,
|
|
GstElementFactoryListType ftype)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GList *res;
|
|
|
|
g_mutex_lock (&dbin->factories_lock);
|
|
gst_decode_bin_update_factories_list (dbin);
|
|
if (ftype == GST_ELEMENT_FACTORY_TYPE_DECODER)
|
|
res =
|
|
gst_element_factory_list_filter (dbin->decoder_factories,
|
|
caps, GST_PAD_SINK, TRUE);
|
|
else
|
|
res =
|
|
gst_element_factory_list_filter (dbin->decodable_factories,
|
|
caps, GST_PAD_SINK, TRUE);
|
|
g_mutex_unlock (&dbin->factories_lock);
|
|
|
|
if (res) {
|
|
ret = TRUE;
|
|
gst_plugin_feature_list_free (res);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
static GstElement *
|
|
create_element (GstDecodebin3 * dbin, GstStream * stream,
|
|
GstElementFactoryListType ftype)
|
|
{
|
|
GList *res;
|
|
GstElement *element = NULL;
|
|
GstCaps *caps;
|
|
|
|
g_mutex_lock (&dbin->factories_lock);
|
|
gst_decode_bin_update_factories_list (dbin);
|
|
caps = gst_stream_get_caps (stream);
|
|
if (ftype == GST_ELEMENT_FACTORY_TYPE_DECODER)
|
|
res =
|
|
gst_element_factory_list_filter (dbin->decoder_factories,
|
|
caps, GST_PAD_SINK, TRUE);
|
|
else
|
|
res =
|
|
gst_element_factory_list_filter (dbin->decodable_factories,
|
|
caps, GST_PAD_SINK, TRUE);
|
|
g_mutex_unlock (&dbin->factories_lock);
|
|
|
|
if (res) {
|
|
element =
|
|
gst_element_factory_create ((GstElementFactory *) res->data, NULL);
|
|
GST_DEBUG ("Created element '%s'", GST_ELEMENT_NAME (element));
|
|
gst_plugin_feature_list_free (res);
|
|
} else {
|
|
GST_DEBUG ("Could not find an element for caps %" GST_PTR_FORMAT, caps);
|
|
}
|
|
|
|
gst_caps_unref (caps);
|
|
return element;
|
|
}
|
|
|
|
/* FIXME : VERY NAIVE. ASSUMING FIRST ONE WILL WORK */
|
|
static GstElement *
|
|
create_decoder (GstDecodebin3 * dbin, GstStream * stream)
|
|
{
|
|
return create_element (dbin, stream, GST_ELEMENT_FACTORY_TYPE_DECODER);
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
keyframe_waiter_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
DecodebinOutputStream * output)
|
|
{
|
|
GstBuffer *buf = GST_PAD_PROBE_INFO_BUFFER (info);
|
|
/* If we have a keyframe, remove the probe and let all data through */
|
|
/* FIXME : HANDLE HEADER BUFFER ?? */
|
|
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");
|
|
output->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 void
|
|
reconfigure_output_stream (DecodebinOutputStream * output,
|
|
MultiQueueSlot * slot)
|
|
{
|
|
GstDecodebin3 *dbin = output->dbin;
|
|
GstCaps *new_caps = (GstCaps *) gst_stream_get_caps (slot->active_stream);
|
|
gboolean needs_decoder;
|
|
|
|
needs_decoder = gst_caps_can_intersect (new_caps, dbin->caps) != TRUE;
|
|
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Reconfiguring output %p to slot %p, needs_decoder:%d", output, slot,
|
|
needs_decoder);
|
|
|
|
/* FIXME : Maybe make the output un-hook itself automatically ? */
|
|
if (output->slot != NULL && output->slot != slot) {
|
|
GST_WARNING_OBJECT (dbin,
|
|
"Output still linked to another slot (%p)", output->slot);
|
|
gst_caps_unref (new_caps);
|
|
return;
|
|
}
|
|
|
|
/* Check if existing config is reusable as-is by checking if
|
|
* the existing decoder accepts the new caps, if not delete
|
|
* it and create a new one */
|
|
if (output->decoder) {
|
|
gboolean can_reuse_decoder;
|
|
|
|
if (needs_decoder) {
|
|
can_reuse_decoder =
|
|
gst_pad_query_accept_caps (output->decoder_sink, new_caps);
|
|
} else
|
|
can_reuse_decoder = FALSE;
|
|
|
|
if (can_reuse_decoder) {
|
|
if (output->type & GST_STREAM_TYPE_VIDEO && output->drop_probe_id == 0) {
|
|
GST_DEBUG_OBJECT (dbin, "Adding keyframe-waiter probe");
|
|
output->drop_probe_id =
|
|
gst_pad_add_probe (slot->src_pad, GST_PAD_PROBE_TYPE_BUFFER,
|
|
(GstPadProbeCallback) keyframe_waiter_probe, output, NULL);
|
|
}
|
|
GST_DEBUG_OBJECT (dbin, "Reusing existing decoder for slot %p", slot);
|
|
if (output->linked == FALSE) {
|
|
gst_pad_link_full (slot->src_pad, output->decoder_sink,
|
|
GST_PAD_LINK_CHECK_NOTHING);
|
|
output->linked = TRUE;
|
|
}
|
|
gst_caps_unref (new_caps);
|
|
return;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (dbin, "Removing old decoder for slot %p", slot);
|
|
|
|
if (output->linked)
|
|
gst_pad_unlink (slot->src_pad, output->decoder_sink);
|
|
output->linked = FALSE;
|
|
if (output->drop_probe_id) {
|
|
gst_pad_remove_probe (slot->src_pad, output->drop_probe_id);
|
|
output->drop_probe_id = 0;
|
|
}
|
|
|
|
if (!gst_ghost_pad_set_target ((GstGhostPad *) output->src_pad, NULL)) {
|
|
GST_ERROR_OBJECT (dbin, "Could not release decoder pad");
|
|
gst_caps_unref (new_caps);
|
|
goto cleanup;
|
|
}
|
|
|
|
gst_element_set_locked_state (output->decoder, TRUE);
|
|
gst_element_set_state (output->decoder, GST_STATE_NULL);
|
|
|
|
gst_bin_remove ((GstBin *) dbin, output->decoder);
|
|
output->decoder = NULL;
|
|
}
|
|
|
|
gst_caps_unref (new_caps);
|
|
|
|
gst_object_replace ((GstObject **) & output->decoder_sink, NULL);
|
|
gst_object_replace ((GstObject **) & output->decoder_src, NULL);
|
|
|
|
/* If a decoder is required, create one */
|
|
if (needs_decoder) {
|
|
/* If we don't have a decoder yet, instantiate one */
|
|
output->decoder = create_decoder (dbin, slot->active_stream);
|
|
if (output->decoder == NULL) {
|
|
GstCaps *caps;
|
|
|
|
SELECTION_UNLOCK (dbin);
|
|
/* FIXME : Should we be smarter if there's a missing decoder ?
|
|
* Should we deactivate that stream ? */
|
|
caps = gst_stream_get_caps (slot->active_stream);
|
|
gst_element_post_message (GST_ELEMENT_CAST (dbin),
|
|
gst_missing_decoder_message_new (GST_ELEMENT_CAST (dbin), caps));
|
|
gst_caps_unref (caps);
|
|
SELECTION_LOCK (dbin);
|
|
goto cleanup;
|
|
}
|
|
if (!gst_bin_add ((GstBin *) dbin, output->decoder)) {
|
|
GST_ERROR_OBJECT (dbin, "could not add decoder to pipeline");
|
|
goto cleanup;
|
|
}
|
|
output->decoder_sink = gst_element_get_static_pad (output->decoder, "sink");
|
|
output->decoder_src = gst_element_get_static_pad (output->decoder, "src");
|
|
if (output->type & GST_STREAM_TYPE_VIDEO) {
|
|
GST_DEBUG_OBJECT (dbin, "Adding keyframe-waiter probe");
|
|
output->drop_probe_id =
|
|
gst_pad_add_probe (slot->src_pad, GST_PAD_PROBE_TYPE_BUFFER,
|
|
(GstPadProbeCallback) keyframe_waiter_probe, output, NULL);
|
|
}
|
|
if (gst_pad_link_full (slot->src_pad, output->decoder_sink,
|
|
GST_PAD_LINK_CHECK_NOTHING) != GST_PAD_LINK_OK) {
|
|
GST_ERROR_OBJECT (dbin, "could not link to %s:%s",
|
|
GST_DEBUG_PAD_NAME (output->decoder_sink));
|
|
goto cleanup;
|
|
}
|
|
} else {
|
|
output->decoder_src = gst_object_ref (slot->src_pad);
|
|
output->decoder_sink = NULL;
|
|
}
|
|
output->linked = TRUE;
|
|
if (!gst_ghost_pad_set_target ((GstGhostPad *) output->src_pad,
|
|
output->decoder_src)) {
|
|
GST_ERROR_OBJECT (dbin, "Could not expose decoder pad");
|
|
goto cleanup;
|
|
}
|
|
if (output->src_exposed == FALSE) {
|
|
output->src_exposed = TRUE;
|
|
gst_element_add_pad (GST_ELEMENT_CAST (dbin), output->src_pad);
|
|
}
|
|
|
|
if (output->decoder)
|
|
gst_element_sync_state_with_parent (output->decoder);
|
|
|
|
output->slot = slot;
|
|
return;
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
static GstPadProbeReturn
|
|
idle_reconfigure (GstPad * pad, GstPadProbeInfo * info, MultiQueueSlot * slot)
|
|
{
|
|
GstMessage *msg = NULL;
|
|
DecodebinOutputStream *output;
|
|
|
|
SELECTION_LOCK (slot->dbin);
|
|
output = get_output_for_slot (slot);
|
|
|
|
GST_DEBUG_OBJECT (pad, "output : %p", output);
|
|
|
|
if (output) {
|
|
reconfigure_output_stream (output, slot);
|
|
msg = is_selection_done (slot->dbin);
|
|
}
|
|
SELECTION_UNLOCK (slot->dbin);
|
|
if (msg)
|
|
gst_element_post_message ((GstElement *) slot->dbin, msg);
|
|
|
|
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;
|
|
const gchar *stream_id;
|
|
if (slot->active_stream) {
|
|
stream_id = gst_stream_get_stream_id (slot->active_stream);
|
|
if (!g_strcmp0 (sid, stream_id))
|
|
return slot;
|
|
}
|
|
if (slot->pending_stream && slot->pending_stream != slot->active_stream) {
|
|
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 gboolean
|
|
reassign_slot (GstDecodebin3 * dbin, MultiQueueSlot * slot)
|
|
{
|
|
DecodebinOutputStream *output;
|
|
MultiQueueSlot *target_slot = NULL;
|
|
GList *tmp;
|
|
const gchar *sid, *tsid;
|
|
|
|
SELECTION_LOCK (dbin);
|
|
output = slot->output;
|
|
|
|
if (G_UNLIKELY (slot->active_stream == NULL)) {
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"Called on inactive slot (active_stream == NULL)");
|
|
SELECTION_UNLOCK (dbin);
|
|
return FALSE;
|
|
}
|
|
|
|
if (G_UNLIKELY (output == NULL)) {
|
|
GST_DEBUG_OBJECT (slot->src_pad,
|
|
"Slot doesn't have any output to be removed");
|
|
SELECTION_UNLOCK (dbin);
|
|
return FALSE;
|
|
}
|
|
|
|
sid = gst_stream_get_stream_id (slot->active_stream);
|
|
GST_DEBUG_OBJECT (slot->src_pad, "slot %s %p", sid, slot);
|
|
|
|
/* Recheck whether this stream is still in the list of streams to deactivate */
|
|
if (stream_in_list (dbin->requested_selection, sid)) {
|
|
/* 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", sid);
|
|
return FALSE;
|
|
}
|
|
|
|
/* Unlink slot from output */
|
|
/* FIXME : Handle flushing ? */
|
|
/* FIXME : Handle outputs without decoders */
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Unlinking from decoder %p",
|
|
output->decoder_sink);
|
|
if (output->decoder_sink)
|
|
gst_pad_unlink (slot->src_pad, output->decoder_sink);
|
|
output->linked = FALSE;
|
|
slot->output = NULL;
|
|
output->slot = NULL;
|
|
/* Remove sid from active selection */
|
|
for (tmp = dbin->active_selection; tmp; tmp = tmp->next)
|
|
if (!g_strcmp0 (sid, tmp->data)) {
|
|
dbin->active_selection = g_list_delete_link (dbin->active_selection, tmp);
|
|
break;
|
|
}
|
|
|
|
/* Can we re-assign this output to a requested stream ? */
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Attempting to re-assing output stream");
|
|
for (tmp = dbin->to_activate; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *tslot = find_slot_for_stream_id (dbin, tmp->data);
|
|
GST_LOG_OBJECT (tslot->src_pad, "Checking slot %p (output:%p , stream:%s)",
|
|
tslot, tslot->output, gst_stream_get_stream_id (tslot->active_stream));
|
|
if (tslot && tslot->type == output->type && tslot->output == NULL) {
|
|
GST_DEBUG_OBJECT (tslot->src_pad, "Using as reassigned slot");
|
|
target_slot = tslot;
|
|
tsid = tmp->data;
|
|
/* Pass target stream id to requested selection */
|
|
dbin->requested_selection =
|
|
g_list_append (dbin->requested_selection, g_strdup (tmp->data));
|
|
dbin->to_activate = g_list_remove (dbin->to_activate, tmp->data);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (target_slot) {
|
|
GST_DEBUG_OBJECT (slot->src_pad, "Assigning output to slot %p '%s'",
|
|
target_slot, tsid);
|
|
target_slot->output = output;
|
|
output->slot = target_slot;
|
|
dbin->active_selection =
|
|
g_list_append (dbin->active_selection, (gchar *) tsid);
|
|
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);
|
|
/* gst_pad_send_event (target_slot->src_pad, gst_event_new_reconfigure ()); */
|
|
} else {
|
|
GstMessage *msg;
|
|
|
|
dbin->output_streams = g_list_remove (dbin->output_streams, output);
|
|
free_output_stream (dbin, output);
|
|
msg = is_selection_done (slot->dbin);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
if (msg)
|
|
gst_element_post_message ((GstElement *) slot->dbin, msg);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* 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
|
|
slot_unassign_probe (GstPad * pad, GstPadProbeInfo * info,
|
|
MultiQueueSlot * slot)
|
|
{
|
|
GstDecodebin3 *dbin = slot->dbin;
|
|
|
|
reassign_slot (dbin, slot);
|
|
|
|
return GST_PAD_PROBE_REMOVE;
|
|
}
|
|
|
|
static gboolean
|
|
handle_stream_switch (GstDecodebin3 * dbin, GList * select_streams,
|
|
guint32 seqnum)
|
|
{
|
|
gboolean ret = TRUE;
|
|
GList *tmp;
|
|
/* List of slots to (de)activate. */
|
|
GList *to_deactivate = NULL;
|
|
GList *to_activate = NULL;
|
|
/* List of unknown stream id, most likely means the event
|
|
* should be sent upstream so that elements can expose the requested stream */
|
|
GList *unknown = NULL;
|
|
GList *to_reassign = NULL;
|
|
GList *future_request_streams = NULL;
|
|
GList *pending_streams = NULL;
|
|
GList *slots_to_reassign = NULL;
|
|
|
|
SELECTION_LOCK (dbin);
|
|
if (G_UNLIKELY (seqnum != dbin->select_streams_seqnum)) {
|
|
GST_DEBUG_OBJECT (dbin, "New SELECT_STREAMS has arrived in the meantime");
|
|
SELECTION_UNLOCK (dbin);
|
|
return TRUE;
|
|
}
|
|
/* Remove pending select_streams */
|
|
g_list_free (dbin->pending_select_streams);
|
|
dbin->pending_select_streams = NULL;
|
|
|
|
/* 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 = select_streams; tmp; tmp = tmp->next) {
|
|
const gchar *sid = (const gchar *) tmp->data;
|
|
MultiQueueSlot *slot;
|
|
GST_DEBUG_OBJECT (dbin, "Checking stream '%s'", sid);
|
|
slot = find_slot_for_stream_id (dbin, sid);
|
|
/* Find the corresponding slot */
|
|
if (slot == NULL) {
|
|
if (stream_in_collection (dbin, (gchar *) sid)) {
|
|
pending_streams = g_list_append (pending_streams, (gchar *) sid);
|
|
} else {
|
|
GST_DEBUG_OBJECT (dbin, "We don't have a slot for stream '%s'", sid);
|
|
unknown = g_list_append (unknown, (gchar *) sid);
|
|
}
|
|
} else if (slot->output == NULL) {
|
|
GST_DEBUG_OBJECT (dbin, "We need to activate slot %p for stream '%s')",
|
|
slot, sid);
|
|
to_activate = g_list_append (to_activate, slot);
|
|
} else {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Stream '%s' from slot %p is already active on output %p", sid, slot,
|
|
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 (select_streams,
|
|
gst_stream_get_stream_id (slot->active_stream)))
|
|
slot_to_deactivate = FALSE;
|
|
}
|
|
if (slot_to_deactivate && slot->pending_stream
|
|
&& slot->pending_stream != slot->active_stream) {
|
|
if (stream_in_list (select_streams,
|
|
gst_stream_get_stream_id (slot->pending_stream)))
|
|
slot_to_deactivate = FALSE;
|
|
}
|
|
if (slot_to_deactivate) {
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Slot %p (%s) should be deactivated, no longer used", slot,
|
|
slot->
|
|
active_stream ? gst_stream_get_stream_id (slot->active_stream) :
|
|
"NULL");
|
|
to_deactivate = g_list_append (to_deactivate, slot);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (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 = 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 (%p) has a candidate slot to activate",
|
|
slot_to_deactivate);
|
|
for (tmp2 = to_activate; tmp2; tmp2 = tmp2->next) {
|
|
MultiQueueSlot *slot_to_activate = (MultiQueueSlot *) tmp2->data;
|
|
GST_DEBUG_OBJECT (dbin, "Comparing to slot %p", slot_to_activate);
|
|
if (slot_to_activate->type == slot_to_deactivate->type) {
|
|
GST_DEBUG_OBJECT (dbin, "Re-using");
|
|
to_reassign = g_list_append (to_reassign, (gchar *)
|
|
gst_stream_get_stream_id (slot_to_activate->active_stream));
|
|
slots_to_reassign =
|
|
g_list_append (slots_to_reassign, slot_to_deactivate);
|
|
to_activate = g_list_remove (to_activate, slot_to_activate);
|
|
removeit = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
next = tmp->next;
|
|
if (removeit)
|
|
to_deactivate = g_list_delete_link (to_deactivate, tmp);
|
|
tmp = next;
|
|
}
|
|
}
|
|
|
|
for (tmp = to_deactivate; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Really need to deactivate slot %p, but no available alternative",
|
|
slot);
|
|
|
|
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 = 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 *) gst_stream_get_stream_id (slot->active_stream));
|
|
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 %p !!", slot);
|
|
}
|
|
|
|
if (to_activate == NULL && pending_streams != NULL) {
|
|
GST_DEBUG_OBJECT (dbin, "Stream switch requested for future collection");
|
|
if (dbin->requested_selection)
|
|
g_list_free_full (dbin->requested_selection, g_free);
|
|
dbin->requested_selection =
|
|
g_list_copy_deep (select_streams, (GCopyFunc) g_strdup, NULL);
|
|
g_list_free (to_deactivate);
|
|
g_list_free (pending_streams);
|
|
to_deactivate = NULL;
|
|
pending_streams = NULL;
|
|
} else {
|
|
if (dbin->requested_selection)
|
|
g_list_free_full (dbin->requested_selection, g_free);
|
|
dbin->requested_selection =
|
|
g_list_copy_deep (future_request_streams, (GCopyFunc) g_strdup, NULL);
|
|
dbin->requested_selection =
|
|
g_list_concat (dbin->requested_selection,
|
|
g_list_copy_deep (pending_streams, (GCopyFunc) g_strdup, NULL));
|
|
if (dbin->to_activate)
|
|
g_list_free (dbin->to_activate);
|
|
dbin->to_activate = g_list_copy (to_reassign);
|
|
}
|
|
|
|
dbin->selection_updated = TRUE;
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
if (unknown) {
|
|
GST_FIXME_OBJECT (dbin, "Got request for an unknown stream");
|
|
g_list_free (unknown);
|
|
}
|
|
|
|
/* 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) slot_unassign_probe, slot, NULL);
|
|
}
|
|
|
|
if (to_deactivate)
|
|
g_list_free (to_deactivate);
|
|
if (to_activate)
|
|
g_list_free (to_activate);
|
|
if (to_reassign)
|
|
g_list_free (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);
|
|
|
|
return ret;
|
|
}
|
|
|
|
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:
|
|
{
|
|
GstPad *peer;
|
|
GList *streams = NULL;
|
|
guint32 seqnum = gst_event_get_seqnum (event);
|
|
|
|
SELECTION_LOCK (dbin);
|
|
if (seqnum == dbin->select_streams_seqnum) {
|
|
SELECTION_UNLOCK (dbin);
|
|
GST_DEBUG_OBJECT (pad,
|
|
"Already handled/handling that SELECT_STREAMS event");
|
|
break;
|
|
}
|
|
dbin->select_streams_seqnum = seqnum;
|
|
if (dbin->pending_select_streams != NULL) {
|
|
GST_LOG_OBJECT (dbin, "Replacing pending select streams");
|
|
g_list_free (dbin->pending_select_streams);
|
|
dbin->pending_select_streams = NULL;
|
|
}
|
|
gst_event_parse_select_streams (event, &streams);
|
|
dbin->pending_select_streams = g_list_copy (streams);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
/* Send event upstream */
|
|
if ((peer = gst_pad_get_peer (pad))) {
|
|
gst_pad_send_event (peer, event);
|
|
gst_object_unref (peer);
|
|
} else {
|
|
gst_event_unref (event);
|
|
}
|
|
/* Finally handle the switch */
|
|
if (streams) {
|
|
handle_stream_switch (dbin, streams, seqnum);
|
|
g_list_free_full (streams, g_free);
|
|
}
|
|
ret = GST_PAD_PROBE_HANDLED;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_decodebin3_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GST_DEBUG_OBJECT (element, "event %s", GST_EVENT_TYPE_NAME (event));
|
|
if (GST_EVENT_TYPE (event) == GST_EVENT_SELECT_STREAMS) {
|
|
GstDecodebin3 *dbin = (GstDecodebin3 *) element;
|
|
GList *streams = NULL;
|
|
guint32 seqnum = gst_event_get_seqnum (event);
|
|
|
|
SELECTION_LOCK (dbin);
|
|
if (seqnum == dbin->select_streams_seqnum) {
|
|
SELECTION_UNLOCK (dbin);
|
|
GST_DEBUG_OBJECT (dbin,
|
|
"Already handled/handling that SELECT_STREAMS event");
|
|
return TRUE;
|
|
}
|
|
dbin->select_streams_seqnum = seqnum;
|
|
if (dbin->pending_select_streams != NULL) {
|
|
GST_LOG_OBJECT (dbin, "Replacing pending select streams");
|
|
g_list_free (dbin->pending_select_streams);
|
|
dbin->pending_select_streams = NULL;
|
|
}
|
|
gst_event_parse_select_streams (event, &streams);
|
|
dbin->pending_select_streams = g_list_copy (streams);
|
|
SELECTION_UNLOCK (dbin);
|
|
|
|
/* FIXME : We don't have an upstream ?? */
|
|
#if 0
|
|
/* Send event upstream */
|
|
if ((peer = gst_pad_get_peer (pad))) {
|
|
gst_pad_send_event (peer, event);
|
|
gst_object_unref (peer);
|
|
}
|
|
#endif
|
|
/* Finally handle the switch */
|
|
if (streams) {
|
|
handle_stream_switch (dbin, streams, seqnum);
|
|
g_list_free_full (streams, g_free);
|
|
}
|
|
|
|
gst_event_unref (event);
|
|
return TRUE;
|
|
}
|
|
return GST_ELEMENT_CLASS (parent_class)->send_event (element, event);
|
|
}
|
|
|
|
|
|
static void
|
|
free_multiqueue_slot (GstDecodebin3 * dbin, MultiQueueSlot * slot)
|
|
{
|
|
if (slot->probe_id)
|
|
gst_pad_remove_probe (slot->src_pad, slot->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);
|
|
}
|
|
|
|
static void
|
|
free_multiqueue_slot_async (GstDecodebin3 * dbin, MultiQueueSlot * slot)
|
|
{
|
|
GST_LOG_OBJECT (dbin, "pushing multiqueue slot on thread pool to free");
|
|
gst_element_call_async (GST_ELEMENT_CAST (dbin),
|
|
(GstElementCallAsyncFunc) free_multiqueue_slot, slot, NULL);
|
|
}
|
|
|
|
/* Create a DecodebinOutputStream for a given type
|
|
* Note: It will be empty initially, it needs to be configured
|
|
* afterwards */
|
|
static DecodebinOutputStream *
|
|
create_output_stream (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;
|
|
|
|
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);
|
|
|
|
return res;
|
|
}
|
|
|
|
static void
|
|
free_output_stream (GstDecodebin3 * dbin, DecodebinOutputStream * output)
|
|
{
|
|
if (output->slot) {
|
|
if (output->decoder_sink && output->decoder)
|
|
gst_pad_unlink (output->slot->src_pad, output->decoder_sink);
|
|
|
|
output->slot->output = NULL;
|
|
output->slot = NULL;
|
|
}
|
|
gst_object_replace ((GstObject **) & output->decoder_sink, NULL);
|
|
gst_ghost_pad_set_target ((GstGhostPad *) output->src_pad, NULL);
|
|
gst_object_replace ((GstObject **) & output->decoder_src, NULL);
|
|
if (output->src_exposed) {
|
|
gst_element_remove_pad ((GstElement *) dbin, output->src_pad);
|
|
}
|
|
if (output->decoder) {
|
|
gst_element_set_locked_state (output->decoder, TRUE);
|
|
gst_element_set_state (output->decoder, GST_STATE_NULL);
|
|
gst_bin_remove ((GstBin *) dbin, output->decoder);
|
|
}
|
|
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:
|
|
{
|
|
GList *tmp;
|
|
|
|
/* Free output streams */
|
|
for (tmp = dbin->output_streams; tmp; tmp = tmp->next) {
|
|
DecodebinOutputStream *output = (DecodebinOutputStream *) tmp->data;
|
|
free_output_stream (dbin, output);
|
|
}
|
|
g_list_free (dbin->output_streams);
|
|
dbin->output_streams = NULL;
|
|
/* Free multiqueue slots */
|
|
for (tmp = dbin->slots; tmp; tmp = tmp->next) {
|
|
MultiQueueSlot *slot = (MultiQueueSlot *) tmp->data;
|
|
free_multiqueue_slot (dbin, slot);
|
|
}
|
|
g_list_free (dbin->slots);
|
|
dbin->slots = NULL;
|
|
/* Free inputs */
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
beach:
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_decodebin3_plugin_init (GstPlugin * plugin)
|
|
{
|
|
GST_DEBUG_CATEGORY_INIT (decodebin3_debug, "decodebin3", 0, "decoder bin");
|
|
|
|
return gst_element_register (plugin, "decodebin3", GST_RANK_NONE,
|
|
GST_TYPE_DECODEBIN3);
|
|
}
|