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This is based on collectpads2 and is synchronizing all streams based on the running time. New features compared to old videomixer: * Synchronizing frames on the running time * Improved and simplified negotiation * Full QoS support * Variable framerate support Fixes bug #626048, #624905.
1935 lines
58 KiB
C
1935 lines
58 KiB
C
/* GStreamer
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* Copyright (C) 2005 Wim Taymans <wim@fluendo.com>
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* Copyright (C) 2008 Mark Nauwelaerts <mnauw@users.sourceforge.net>
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* Copyright (C) 2010 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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*
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* gstcollectpads2.c:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:gstcollectpads2
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* @short_description: manages a set of pads that operate in collect mode
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* @see_also:
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*
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* Manages a set of pads that operate in collect mode. This means that control
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* is given to the manager of this object when all pads have data.
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* <itemizedlist>
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* <listitem><para>
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* Collectpads are created with gst_collect_pads2_new(). A callback should then
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* be installed with gst_collect_pads2_set_function ().
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* </para></listitem>
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* <listitem><para>
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* Pads are added to the collection with gst_collect_pads2_add_pad()/
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* gst_collect_pads2_remove_pad(). The pad
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* has to be a sinkpad. The chain and event functions of the pad are
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* overridden. The element_private of the pad is used to store
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* private information for the collectpads.
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* </para></listitem>
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* <listitem><para>
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* For each pad, data is queued in the _chain function or by
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* performing a pull_range.
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* </para></listitem>
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* <listitem><para>
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* When data is queued on all pads in waiting mode, the callback function is called.
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* </para></listitem>
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* <listitem><para>
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* Data can be dequeued from the pad with the gst_collect_pads2_pop() method.
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* One can peek at the data with the gst_collect_pads2_peek() function.
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* These functions will return NULL if the pad received an EOS event. When all
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* pads return NULL from a gst_collect_pads2_peek(), the element can emit an EOS
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* event itself.
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* </para></listitem>
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* <listitem><para>
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* Data can also be dequeued in byte units using the gst_collect_pads2_available(),
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* gst_collect_pads2_read() and gst_collect_pads2_flush() calls.
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* </para></listitem>
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* <listitem><para>
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* Elements should call gst_collect_pads2_start() and gst_collect_pads2_stop() in
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* their state change functions to start and stop the processing of the collectpads.
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* The gst_collect_pads2_stop() call should be called before calling the parent
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* element state change function in the PAUSED_TO_READY state change to ensure
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* no pad is blocked and the element can finish streaming.
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* </para></listitem>
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* <listitem><para>
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* gst_collect_pads2_collect() and gst_collect_pads2_collect_range() can be used by
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* elements that start a #GstTask to drive the collect_pads2. This feature is however
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* not yet implemented.
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* </para></listitem>
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* <listitem><para>
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* gst_collect_pads2_set_waiting() sets a pad to waiting or non-waiting mode.
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* CollectPads element is not waiting for data to be collected on non-waiting pads.
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* Thus these pads may but need not have data when the callback is called.
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* All pads are in waiting mode by default.
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* </para></listitem>
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* </itemizedlist>
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*
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* Last reviewed on 2008-03-14 (0.10.17)
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*/
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#include "gstcollectpads2.h"
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GST_DEBUG_CATEGORY_STATIC (collect_pads2_debug);
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#define GST_CAT_DEFAULT collect_pads2_debug
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GST_BOILERPLATE (GstCollectPads2, gst_collect_pads2, GstObject,
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GST_TYPE_OBJECT);
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static void gst_collect_pads2_clear (GstCollectPads2 * pads,
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GstCollectData2 * data);
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static GstFlowReturn gst_collect_pads2_chain (GstPad * pad, GstBuffer * buffer);
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static gboolean gst_collect_pads2_event (GstPad * pad, GstEvent * event);
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static void gst_collect_pads2_finalize (GObject * object);
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static GstFlowReturn gst_collect_pads2_default_collected (GstCollectPads2 *
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pads, gpointer user_data);
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static gint gst_collect_pads2_default_compare_func (GstCollectPads2 * pads,
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GstCollectData2 * data1, GstClockTime timestamp1, GstCollectData2 * data2,
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GstClockTime timestamp2, gpointer user_data);
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static gboolean gst_collect_pads2_recalculate_full (GstCollectPads2 * pads);
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static void ref_data (GstCollectData2 * data);
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static void unref_data (GstCollectData2 * data);
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/* Some properties are protected by LOCK, others by STREAM_LOCK
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* However, manipulating either of these partitions may require
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* to signal/wake a _WAIT, so use a separate (sort of) event to prevent races
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* Alternative implementations are possible, e.g. some low-level re-implementing
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* of the 2 above locks to drop both of them atomically when going into _WAIT.
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*/
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#define GST_COLLECT_PADS2_GET_EVT_COND(pads) (((GstCollectPads2 *)pads)->evt_cond)
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#define GST_COLLECT_PADS2_GET_EVT_LOCK(pads) (((GstCollectPads2 *)pads)->evt_lock)
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#define GST_COLLECT_PADS2_EVT_WAIT(pads, cookie) G_STMT_START { \
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g_mutex_lock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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/* should work unless a lot of event'ing and thread starvation */\
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while (cookie == ((GstCollectPads2 *) pads)->evt_cookie) \
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g_cond_wait (GST_COLLECT_PADS2_GET_EVT_COND (pads), \
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GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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cookie = ((GstCollectPads2 *) pads)->evt_cookie; \
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g_mutex_unlock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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} G_STMT_END
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#define GST_COLLECT_PADS2_EVT_WAIT_TIMED(pads, cookie, timeout) G_STMT_START { \
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GTimeVal __tv; \
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\
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g_get_current_time (&tv); \
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g_time_val_add (&tv, timeout); \
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\
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g_mutex_lock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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/* should work unless a lot of event'ing and thread starvation */\
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while (cookie == ((GstCollectPads2 *) pads)->evt_cookie) \
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g_cond_timed_wait (GST_COLLECT_PADS2_GET_EVT_COND (pads), \
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GST_COLLECT_PADS2_GET_EVT_LOCK (pads), &tv); \
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cookie = ((GstCollectPads2 *) pads)->evt_cookie; \
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g_mutex_unlock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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} G_STMT_END
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#define GST_COLLECT_PADS2_EVT_BROADCAST(pads) G_STMT_START { \
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g_mutex_lock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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/* never mind wrap-around */ \
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++(((GstCollectPads2 *) pads)->evt_cookie); \
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g_cond_broadcast (GST_COLLECT_PADS2_GET_EVT_COND (pads)); \
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g_mutex_unlock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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} G_STMT_END
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#define GST_COLLECT_PADS2_EVT_INIT(cookie) G_STMT_START { \
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g_mutex_lock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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cookie = ((GstCollectPads2 *) pads)->evt_cookie; \
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g_mutex_unlock (GST_COLLECT_PADS2_GET_EVT_LOCK (pads)); \
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} G_STMT_END
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static void
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gst_collect_pads2_base_init (gpointer g_class)
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{
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/* Do nothing here */
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}
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static void
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gst_collect_pads2_class_init (GstCollectPads2Class * klass)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GST_DEBUG_CATEGORY_INIT (collect_pads2_debug, "collectpads2", 0,
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"GstCollectPads2");
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gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_collect_pads2_finalize);
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}
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static void
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gst_collect_pads2_init (GstCollectPads2 * pads, GstCollectPads2Class * g_class)
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{
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pads->data = NULL;
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pads->cookie = 0;
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pads->numpads = 0;
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pads->queuedpads = 0;
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pads->eospads = 0;
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pads->started = FALSE;
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g_static_rec_mutex_init (&pads->stream_lock);
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pads->func = gst_collect_pads2_default_collected;
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pads->user_data = NULL;
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pads->event_func = NULL;
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pads->event_user_data = NULL;
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pads->prepare_buffer_func = NULL;
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pads->prepare_buffer_user_data = NULL;
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/* members for default muxing */
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pads->buffer_func = NULL;
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pads->buffer_user_data = NULL;
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pads->compare_func = gst_collect_pads2_default_compare_func;
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pads->compare_user_data = NULL;
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pads->earliest_data = NULL;
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pads->earliest_time = GST_CLOCK_TIME_NONE;
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/* members to manage the pad list */
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pads->pad_cookie = 0;
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pads->pad_list = NULL;
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/* members for event */
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pads->evt_lock = g_mutex_new ();
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pads->evt_cond = g_cond_new ();
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pads->evt_cookie = 0;
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}
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static void
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gst_collect_pads2_finalize (GObject * object)
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{
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GstCollectPads2 *pads = GST_COLLECT_PADS2 (object);
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GST_DEBUG_OBJECT (object, "finalize");
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g_static_rec_mutex_free (&pads->stream_lock);
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g_cond_free (pads->evt_cond);
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g_mutex_free (pads->evt_lock);
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/* Remove pads and free pads list */
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g_slist_foreach (pads->pad_list, (GFunc) unref_data, NULL);
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g_slist_foreach (pads->data, (GFunc) unref_data, NULL);
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g_slist_free (pads->data);
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g_slist_free (pads->pad_list);
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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/**
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* gst_collect_pads2_new:
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*
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* Create a new instance of #GstCollectsPads.
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*
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* Returns: a new #GstCollectPads2, or NULL in case of an error.
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*
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* MT safe.
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*/
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GstCollectPads2 *
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gst_collect_pads2_new (void)
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{
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GstCollectPads2 *newcoll;
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newcoll = g_object_new (GST_TYPE_COLLECT_PADS2, NULL);
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return newcoll;
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}
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/**
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* gst_collect_pads2_set_prepare_buffer_function:
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* @pads: the collectpads to use
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* @func: the function to set
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* @user_data: user data passed to the function
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*
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* Set the callback function and user data that will be called
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* for every buffer that arrives.
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*
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* MT safe.
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*/
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void
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gst_collect_pads2_set_prepare_buffer_function (GstCollectPads2 * pads,
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GstCollectPads2BufferFunction func, gpointer user_data)
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{
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g_return_if_fail (pads != NULL);
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g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
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GST_OBJECT_LOCK (pads);
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pads->prepare_buffer_func = func;
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pads->prepare_buffer_user_data = user_data;
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GST_OBJECT_UNLOCK (pads);
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}
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/* Must be called with GstObject lock! */
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static void
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gst_collect_pads2_set_buffer_function_locked (GstCollectPads2 * pads,
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GstCollectPads2BufferFunction func, gpointer user_data)
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{
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pads->buffer_func = func;
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pads->buffer_user_data = user_data;
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}
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/**
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* gst_collect_pads2_set_buffer_function:
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* @pads: the collectpads to use
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* @func: the function to set
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* @user_data: user data passed to the function
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*
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* Set the callback function and user data that will be called with
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* the oldest buffer when all pads have been collected.
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*
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* MT safe.
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*/
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void
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gst_collect_pads2_set_buffer_function (GstCollectPads2 * pads,
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GstCollectPads2BufferFunction func, gpointer user_data)
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{
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g_return_if_fail (pads != NULL);
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g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
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GST_OBJECT_LOCK (pads);
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gst_collect_pads2_set_buffer_function_locked (pads, func, user_data);
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GST_OBJECT_UNLOCK (pads);
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}
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/**
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* gst_collect_pads2_set_compare_function:
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* @pads: the pads to use
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* @func: the function to set
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* @user_data: user data passed to the function
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*
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* Set the timestamp comparison function.
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*
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* MT safe.
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*/
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/* NOTE allowing to change comparison seems not advisable;
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no known use-case, and collaboration with default algorithm is unpredictable.
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If custom compairing/operation is needed, just use a collect function of
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your own */
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void
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gst_collect_pads2_set_compare_function (GstCollectPads2 * pads,
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GstCollectPads2CompareFunction func, gpointer user_data)
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{
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g_return_if_fail (pads != NULL);
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g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
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GST_OBJECT_LOCK (pads);
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pads->compare_func = func;
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pads->compare_user_data = user_data;
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GST_OBJECT_UNLOCK (pads);
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}
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/**
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* gst_collect_pads2_set_function:
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* @pads: the collectspads to use
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* @func: the function to set
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* @user_data: user data passed to the function
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*
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* CollectPads provides a default collection algorithm that will determine
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* the oldest buffer available on all of its pads, and then delegate
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* to a configured callback.
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* However, if circumstances are more complicated and/or more control
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* is desired, this sets a callback that will be invoked instead when
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* all the pads added to the collection have buffers queued.
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* Evidently, this callback is not compatible with
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* gst_collect_pads2_set_buffer_function() callback.
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* If this callback is set, the former will be unset.
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*
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* MT safe.
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*/
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void
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gst_collect_pads2_set_function (GstCollectPads2 * pads,
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GstCollectPads2Function func, gpointer user_data)
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{
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g_return_if_fail (pads != NULL);
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g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
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GST_OBJECT_LOCK (pads);
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pads->func = func;
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pads->user_data = user_data;
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gst_collect_pads2_set_buffer_function_locked (pads, NULL, NULL);
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GST_OBJECT_UNLOCK (pads);
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}
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static void
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ref_data (GstCollectData2 * data)
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{
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g_assert (data != NULL);
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g_atomic_int_inc (&(data->refcount));
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}
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static void
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unref_data (GstCollectData2 * data)
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{
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g_assert (data != NULL);
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g_assert (data->refcount > 0);
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if (!g_atomic_int_dec_and_test (&(data->refcount)))
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return;
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if (data->destroy_notify)
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data->destroy_notify (data);
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g_object_unref (data->pad);
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if (data->buffer) {
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gst_buffer_unref (data->buffer);
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}
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g_free (data);
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}
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/**
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* gst_collect_pads2_set_event_function:
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* @pads: the collectspads to use
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* @func: the function to set
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* @user_data: user data passed to the function
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*
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* Set the event callback function and user data that will be called after
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* collectpads has processed and event originating from one of the collected
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* pads. If the event being processed is a serialized one, this callback is
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* called with @pads STREAM_LOCK held, otherwise not. As this lock should be
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* held when calling a number of CollectPads functions, it should be acquired
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* if so (unusually) needed.
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*
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* MT safe.
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*/
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void
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gst_collect_pads2_set_event_function (GstCollectPads2 * pads,
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GstCollectPads2EventFunction func, gpointer user_data)
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{
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g_return_if_fail (pads != NULL);
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g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
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GST_OBJECT_LOCK (pads);
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pads->event_func = func;
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pads->event_user_data = user_data;
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GST_OBJECT_UNLOCK (pads);
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}
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/**
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* gst_collect_pads2_add_pad:
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* @pads: the collectspads to use
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* @pad: the pad to add
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* @size: the size of the returned #GstCollectData2 structure
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*
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* Add a pad to the collection of collect pads. The pad has to be
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* a sinkpad. The refcount of the pad is incremented. Use
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* gst_collect_pads2_remove_pad() to remove the pad from the collection
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* again.
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*
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* You specify a size for the returned #GstCollectData2 structure
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* so that you can use it to store additional information.
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*
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* The pad will be automatically activated in push mode when @pads is
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* started.
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*
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* This function calls gst_collect_pads2_add_pad() passing a value of NULL
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* for destroy_notify and TRUE for locked.
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*
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* Returns: a new #GstCollectData2 to identify the new pad. Or NULL
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* if wrong parameters are supplied.
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*
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* MT safe.
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*/
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GstCollectData2 *
|
|
gst_collect_pads2_add_pad (GstCollectPads2 * pads, GstPad * pad, guint size)
|
|
{
|
|
return gst_collect_pads2_add_pad_full (pads, pad, size, NULL, TRUE);
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_add_pad_full:
|
|
* @pads: the collectspads to use
|
|
* @pad: the pad to add
|
|
* @size: the size of the returned #GstCollectData2 structure
|
|
* @destroy_notify: function to be called before the returned #GstCollectData2
|
|
* structure is freed
|
|
* @lock: whether to lock this pad in usual waiting state
|
|
*
|
|
* Add a pad to the collection of collect pads. The pad has to be
|
|
* a sinkpad. The refcount of the pad is incremented. Use
|
|
* gst_collect_pads2_remove_pad() to remove the pad from the collection
|
|
* again.
|
|
*
|
|
* You specify a size for the returned #GstCollectData2 structure
|
|
* so that you can use it to store additional information.
|
|
*
|
|
* You can also specify a #GstCollectData2DestroyNotify that will be called
|
|
* just before the #GstCollectData2 structure is freed. It is passed the
|
|
* pointer to the structure and should free any custom memory and resources
|
|
* allocated for it.
|
|
*
|
|
* Keeping a pad locked in waiting state is only relevant when using
|
|
* the default collection algorithm (providing the oldest buffer).
|
|
* It ensures a buffer must be available on this pad for a collection
|
|
* to take place. This is of typical use to a muxer element where
|
|
* non-subtitle streams should always be in waiting state,
|
|
* e.g. to assure that caps information is available on all these streams
|
|
* when initial headers have to be written.
|
|
*
|
|
* The pad will be automatically activated in push mode when @pads is
|
|
* started.
|
|
*
|
|
* Since: 0.10.12
|
|
*
|
|
* Returns: a new #GstCollectData2 to identify the new pad. Or NULL
|
|
* if wrong parameters are supplied.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
GstCollectData2 *
|
|
gst_collect_pads2_add_pad_full (GstCollectPads2 * pads, GstPad * pad,
|
|
guint size, GstCollectData2DestroyNotify destroy_notify, gboolean lock)
|
|
{
|
|
GstCollectData2 *data;
|
|
|
|
g_return_val_if_fail (pads != NULL, NULL);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), NULL);
|
|
g_return_val_if_fail (pad != NULL, NULL);
|
|
g_return_val_if_fail (GST_PAD_IS_SINK (pad), NULL);
|
|
g_return_val_if_fail (size >= sizeof (GstCollectData2), NULL);
|
|
|
|
GST_DEBUG_OBJECT (pads, "adding pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
data = g_malloc0 (size);
|
|
data->collect = pads;
|
|
data->pad = gst_object_ref (pad);
|
|
data->buffer = NULL;
|
|
data->pos = 0;
|
|
gst_segment_init (&data->segment, GST_FORMAT_UNDEFINED);
|
|
data->state = GST_COLLECT_PADS2_STATE_WAITING;
|
|
data->state |= lock ? GST_COLLECT_PADS2_STATE_LOCKED : 0;
|
|
data->refcount = 1;
|
|
data->destroy_notify = destroy_notify;
|
|
|
|
GST_OBJECT_LOCK (pads);
|
|
GST_OBJECT_LOCK (pad);
|
|
gst_pad_set_element_private (pad, data);
|
|
GST_OBJECT_UNLOCK (pad);
|
|
pads->pad_list = g_slist_append (pads->pad_list, data);
|
|
gst_pad_set_chain_function (pad, GST_DEBUG_FUNCPTR (gst_collect_pads2_chain));
|
|
gst_pad_set_event_function (pad, GST_DEBUG_FUNCPTR (gst_collect_pads2_event));
|
|
/* backward compat, also add to data if stopped, so that the element already
|
|
* has this in the public data list before going PAUSED (typically)
|
|
* this can only be done when we are stopped because we don't take the
|
|
* STREAM_LOCK to protect the pads->data list. */
|
|
if (!pads->started) {
|
|
pads->data = g_slist_append (pads->data, data);
|
|
ref_data (data);
|
|
}
|
|
/* activate the pad when needed */
|
|
if (pads->started)
|
|
gst_pad_set_active (pad, TRUE);
|
|
pads->pad_cookie++;
|
|
GST_OBJECT_UNLOCK (pads);
|
|
|
|
return data;
|
|
}
|
|
|
|
static gint
|
|
find_pad (GstCollectData2 * data, GstPad * pad)
|
|
{
|
|
if (data->pad == pad)
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_remove_pad:
|
|
* @pads: the collectspads to use
|
|
* @pad: the pad to remove
|
|
*
|
|
* Remove a pad from the collection of collect pads. This function will also
|
|
* free the #GstCollectData2 and all the resources that were allocated with
|
|
* gst_collect_pads2_add_pad().
|
|
*
|
|
* The pad will be deactivated automatically when @pads is stopped.
|
|
*
|
|
* Returns: %TRUE if the pad could be removed.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
gboolean
|
|
gst_collect_pads2_remove_pad (GstCollectPads2 * pads, GstPad * pad)
|
|
{
|
|
GstCollectData2 *data;
|
|
GSList *list;
|
|
|
|
g_return_val_if_fail (pads != NULL, FALSE);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), FALSE);
|
|
g_return_val_if_fail (pad != NULL, FALSE);
|
|
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
|
|
|
|
GST_DEBUG_OBJECT (pads, "removing pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
GST_OBJECT_LOCK (pads);
|
|
list = g_slist_find_custom (pads->pad_list, pad, (GCompareFunc) find_pad);
|
|
if (!list)
|
|
goto unknown_pad;
|
|
|
|
data = (GstCollectData2 *) list->data;
|
|
|
|
GST_DEBUG_OBJECT (pads, "found pad %s:%s at %p", GST_DEBUG_PAD_NAME (pad),
|
|
data);
|
|
|
|
/* clear the stuff we configured */
|
|
gst_pad_set_chain_function (pad, NULL);
|
|
gst_pad_set_event_function (pad, NULL);
|
|
GST_OBJECT_LOCK (pad);
|
|
gst_pad_set_element_private (pad, NULL);
|
|
GST_OBJECT_UNLOCK (pad);
|
|
|
|
/* backward compat, also remove from data if stopped, note that this function
|
|
* can only be called when we are stopped because we don't take the
|
|
* STREAM_LOCK to protect the pads->data list. */
|
|
if (!pads->started) {
|
|
GSList *dlist;
|
|
|
|
dlist = g_slist_find_custom (pads->data, pad, (GCompareFunc) find_pad);
|
|
if (dlist) {
|
|
GstCollectData2 *pdata = dlist->data;
|
|
|
|
pads->data = g_slist_delete_link (pads->data, dlist);
|
|
unref_data (pdata);
|
|
}
|
|
}
|
|
/* remove from the pad list */
|
|
pads->pad_list = g_slist_delete_link (pads->pad_list, list);
|
|
pads->pad_cookie++;
|
|
|
|
/* signal waiters because something changed */
|
|
GST_COLLECT_PADS2_EVT_BROADCAST (pads);
|
|
|
|
/* deactivate the pad when needed */
|
|
if (!pads->started)
|
|
gst_pad_set_active (pad, FALSE);
|
|
|
|
/* clean and free the collect data */
|
|
unref_data (data);
|
|
|
|
GST_OBJECT_UNLOCK (pads);
|
|
|
|
return TRUE;
|
|
|
|
unknown_pad:
|
|
{
|
|
GST_WARNING_OBJECT (pads, "cannot remove unknown pad %s:%s",
|
|
GST_DEBUG_PAD_NAME (pad));
|
|
GST_OBJECT_UNLOCK (pads);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_is_active:
|
|
* @pads: the collectspads to use
|
|
* @pad: the pad to check
|
|
*
|
|
* Check if a pad is active.
|
|
*
|
|
* This function is currently not implemented.
|
|
*
|
|
* Returns: %TRUE if the pad is active.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
gboolean
|
|
gst_collect_pads2_is_active (GstCollectPads2 * pads, GstPad * pad)
|
|
{
|
|
g_return_val_if_fail (pads != NULL, FALSE);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), FALSE);
|
|
g_return_val_if_fail (pad != NULL, FALSE);
|
|
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
|
|
|
|
g_warning ("gst_collect_pads2_is_active() is not implemented");
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_collect:
|
|
* @pads: the collectspads to use
|
|
*
|
|
* Collect data on all pads. This function is usually called
|
|
* from a #GstTask function in an element.
|
|
*
|
|
* This function is currently not implemented.
|
|
*
|
|
* Returns: #GstFlowReturn of the operation.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
GstFlowReturn
|
|
gst_collect_pads2_collect (GstCollectPads2 * pads)
|
|
{
|
|
g_return_val_if_fail (pads != NULL, GST_FLOW_ERROR);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), GST_FLOW_ERROR);
|
|
|
|
g_warning ("gst_collect_pads2_collect() is not implemented");
|
|
|
|
return GST_FLOW_NOT_SUPPORTED;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_collect_range:
|
|
* @pads: the collectspads to use
|
|
* @offset: the offset to collect
|
|
* @length: the length to collect
|
|
*
|
|
* Collect data with @offset and @length on all pads. This function
|
|
* is typically called in the getrange function of an element.
|
|
*
|
|
* This function is currently not implemented.
|
|
*
|
|
* Returns: #GstFlowReturn of the operation.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
GstFlowReturn
|
|
gst_collect_pads2_collect_range (GstCollectPads2 * pads, guint64 offset,
|
|
guint length)
|
|
{
|
|
g_return_val_if_fail (pads != NULL, GST_FLOW_ERROR);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), GST_FLOW_ERROR);
|
|
|
|
g_warning ("gst_collect_pads2_collect_range() is not implemented");
|
|
|
|
return GST_FLOW_NOT_SUPPORTED;
|
|
}
|
|
|
|
/*
|
|
* Must be called with STREAM_LOCK.
|
|
*/
|
|
static void
|
|
gst_collect_pads2_set_flushing_unlocked (GstCollectPads2 * pads,
|
|
gboolean flushing)
|
|
{
|
|
GSList *walk = NULL;
|
|
|
|
/* Update the pads flushing flag */
|
|
for (walk = pads->data; walk; walk = g_slist_next (walk)) {
|
|
GstCollectData2 *cdata = walk->data;
|
|
|
|
if (GST_IS_PAD (cdata->pad)) {
|
|
GST_OBJECT_LOCK (cdata->pad);
|
|
if (flushing)
|
|
GST_PAD_SET_FLUSHING (cdata->pad);
|
|
else
|
|
GST_PAD_UNSET_FLUSHING (cdata->pad);
|
|
if (flushing)
|
|
GST_COLLECT_PADS2_STATE_SET (cdata, GST_COLLECT_PADS2_STATE_FLUSHING);
|
|
else
|
|
GST_COLLECT_PADS2_STATE_UNSET (cdata, GST_COLLECT_PADS2_STATE_FLUSHING);
|
|
gst_collect_pads2_clear (pads, cdata);
|
|
GST_OBJECT_UNLOCK (cdata->pad);
|
|
}
|
|
}
|
|
|
|
/* inform _chain of changes */
|
|
GST_COLLECT_PADS2_EVT_BROADCAST (pads);
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_set_flushing:
|
|
* @pads: the collectspads to use
|
|
* @flushing: desired state of the pads
|
|
*
|
|
* Change the flushing state of all the pads in the collection. No pad
|
|
* is able to accept anymore data when @flushing is %TRUE. Calling this
|
|
* function with @flushing %FALSE makes @pads accept data again.
|
|
* Caller must ensure that downstream streaming (thread) is not blocked,
|
|
* e.g. by sending a FLUSH_START downstream.
|
|
*
|
|
* MT safe.
|
|
*
|
|
* Since: 0.10.7.
|
|
*/
|
|
void
|
|
gst_collect_pads2_set_flushing (GstCollectPads2 * pads, gboolean flushing)
|
|
{
|
|
g_return_if_fail (pads != NULL);
|
|
g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
|
|
|
|
/* NOTE since this eventually calls _pop, some (STREAM_)LOCK is needed here */
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
gst_collect_pads2_set_flushing_unlocked (pads, flushing);
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_start:
|
|
* @pads: the collectspads to use
|
|
*
|
|
* Starts the processing of data in the collect_pads2.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
void
|
|
gst_collect_pads2_start (GstCollectPads2 * pads)
|
|
{
|
|
GSList *collected;
|
|
|
|
g_return_if_fail (pads != NULL);
|
|
g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
|
|
|
|
GST_DEBUG_OBJECT (pads, "starting collect pads");
|
|
|
|
/* make sure stop and collect cannot be called anymore */
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
|
|
/* make pads streamable */
|
|
GST_OBJECT_LOCK (pads);
|
|
|
|
/* loop over the master pad list and reset the segment */
|
|
collected = pads->pad_list;
|
|
for (; collected; collected = g_slist_next (collected)) {
|
|
GstCollectData2 *data;
|
|
|
|
data = collected->data;
|
|
gst_segment_init (&data->segment, GST_FORMAT_UNDEFINED);
|
|
}
|
|
|
|
gst_collect_pads2_set_flushing_unlocked (pads, FALSE);
|
|
|
|
/* Start collect pads */
|
|
pads->started = TRUE;
|
|
GST_OBJECT_UNLOCK (pads);
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_stop:
|
|
* @pads: the collectspads to use
|
|
*
|
|
* Stops the processing of data in the collect_pads2. this function
|
|
* will also unblock any blocking operations.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
void
|
|
gst_collect_pads2_stop (GstCollectPads2 * pads)
|
|
{
|
|
GSList *collected;
|
|
|
|
g_return_if_fail (pads != NULL);
|
|
g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
|
|
|
|
GST_DEBUG_OBJECT (pads, "stopping collect pads");
|
|
|
|
/* make sure collect and start cannot be called anymore */
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
|
|
/* make pads not accept data anymore */
|
|
GST_OBJECT_LOCK (pads);
|
|
gst_collect_pads2_set_flushing_unlocked (pads, TRUE);
|
|
|
|
/* Stop collect pads */
|
|
pads->started = FALSE;
|
|
pads->eospads = 0;
|
|
pads->queuedpads = 0;
|
|
|
|
/* loop over the master pad list and flush buffers */
|
|
collected = pads->pad_list;
|
|
for (; collected; collected = g_slist_next (collected)) {
|
|
GstCollectData2 *data;
|
|
GstBuffer **buffer_p;
|
|
|
|
data = collected->data;
|
|
if (data->buffer) {
|
|
buffer_p = &data->buffer;
|
|
gst_buffer_replace (buffer_p, NULL);
|
|
data->pos = 0;
|
|
}
|
|
GST_COLLECT_PADS2_STATE_UNSET (data, GST_COLLECT_PADS2_STATE_EOS);
|
|
}
|
|
|
|
if (pads->earliest_data)
|
|
unref_data (pads->earliest_data);
|
|
pads->earliest_data = NULL;
|
|
pads->earliest_time = GST_CLOCK_TIME_NONE;
|
|
|
|
GST_OBJECT_UNLOCK (pads);
|
|
/* Wake them up so they can end the chain functions. */
|
|
GST_COLLECT_PADS2_EVT_BROADCAST (pads);
|
|
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_peek:
|
|
* @pads: the collectspads to peek
|
|
* @data: the data to use
|
|
*
|
|
* Peek at the buffer currently queued in @data. This function
|
|
* should be called with the @pads STREAM_LOCK held, such as in the callback
|
|
* handler.
|
|
*
|
|
* Returns: The buffer in @data or NULL if no buffer is queued.
|
|
* should unref the buffer after usage.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
GstBuffer *
|
|
gst_collect_pads2_peek (GstCollectPads2 * pads, GstCollectData2 * data)
|
|
{
|
|
GstBuffer *result;
|
|
|
|
g_return_val_if_fail (pads != NULL, NULL);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), NULL);
|
|
g_return_val_if_fail (data != NULL, NULL);
|
|
|
|
if ((result = data->buffer))
|
|
gst_buffer_ref (result);
|
|
|
|
GST_DEBUG_OBJECT (pads, "Peeking at pad %s:%s: buffer=%p",
|
|
GST_DEBUG_PAD_NAME (data->pad), result);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_pop:
|
|
* @pads: the collectspads to pop
|
|
* @data: the data to use
|
|
*
|
|
* Pop the buffer currently queued in @data. This function
|
|
* should be called with the @pads STREAM_LOCK held, such as in the callback
|
|
* handler.
|
|
*
|
|
* Returns: The buffer in @data or NULL if no buffer was queued.
|
|
* You should unref the buffer after usage.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
GstBuffer *
|
|
gst_collect_pads2_pop (GstCollectPads2 * pads, GstCollectData2 * data)
|
|
{
|
|
GstBuffer *result;
|
|
|
|
g_return_val_if_fail (pads != NULL, NULL);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), NULL);
|
|
g_return_val_if_fail (data != NULL, NULL);
|
|
|
|
if ((result = data->buffer)) {
|
|
data->buffer = NULL;
|
|
data->pos = 0;
|
|
/* one less pad with queued data now */
|
|
if (GST_COLLECT_PADS2_STATE_IS_SET (data, GST_COLLECT_PADS2_STATE_WAITING))
|
|
pads->queuedpads--;
|
|
}
|
|
|
|
GST_COLLECT_PADS2_EVT_BROADCAST (pads);
|
|
|
|
GST_DEBUG_OBJECT (pads, "Pop buffer on pad %s:%s: buffer=%p",
|
|
GST_DEBUG_PAD_NAME (data->pad), result);
|
|
|
|
return result;
|
|
}
|
|
|
|
/* pop and unref the currently queued buffer, should be called with STREAM_LOCK
|
|
* held */
|
|
static void
|
|
gst_collect_pads2_clear (GstCollectPads2 * pads, GstCollectData2 * data)
|
|
{
|
|
GstBuffer *buf;
|
|
|
|
if ((buf = gst_collect_pads2_pop (pads, data)))
|
|
gst_buffer_unref (buf);
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_available:
|
|
* @pads: the collectspads to query
|
|
*
|
|
* Query how much bytes can be read from each queued buffer. This means
|
|
* that the result of this call is the maximum number of bytes that can
|
|
* be read from each of the pads.
|
|
*
|
|
* This function should be called with @pads STREAM_LOCK held, such as
|
|
* in the callback.
|
|
*
|
|
* Returns: The maximum number of bytes queued on all pads. This function
|
|
* returns 0 if a pad has no queued buffer.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
/* we might pre-calculate this in some struct field,
|
|
* but would then have to maintain this in _chain and particularly _pop, etc,
|
|
* even if element is never interested in this information */
|
|
guint
|
|
gst_collect_pads2_available (GstCollectPads2 * pads)
|
|
{
|
|
GSList *collected;
|
|
guint result = G_MAXUINT;
|
|
|
|
g_return_val_if_fail (pads != NULL, 0);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), 0);
|
|
|
|
collected = pads->data;
|
|
for (; collected; collected = g_slist_next (collected)) {
|
|
GstCollectData2 *pdata;
|
|
GstBuffer *buffer;
|
|
gint size;
|
|
|
|
pdata = (GstCollectData2 *) collected->data;
|
|
|
|
/* ignore pad with EOS */
|
|
if (G_UNLIKELY (GST_COLLECT_PADS2_STATE_IS_SET (pdata,
|
|
GST_COLLECT_PADS2_STATE_EOS))) {
|
|
GST_DEBUG_OBJECT (pads, "pad %p is EOS", pdata);
|
|
continue;
|
|
}
|
|
|
|
/* an empty buffer without EOS is weird when we get here.. */
|
|
if (G_UNLIKELY ((buffer = pdata->buffer) == NULL)) {
|
|
GST_WARNING_OBJECT (pads, "pad %p has no buffer", pdata);
|
|
goto not_filled;
|
|
}
|
|
|
|
/* this is the size left of the buffer */
|
|
size = GST_BUFFER_SIZE (buffer) - pdata->pos;
|
|
GST_DEBUG_OBJECT (pads, "pad %p has %d bytes left", pdata, size);
|
|
|
|
/* need to return the min of all available data */
|
|
if (size < result)
|
|
result = size;
|
|
}
|
|
/* nothing changed, all must be EOS then, return 0 */
|
|
if (G_UNLIKELY (result == G_MAXUINT))
|
|
result = 0;
|
|
|
|
return result;
|
|
|
|
not_filled:
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_read:
|
|
* @pads: the collectspads to query
|
|
* @data: the data to use
|
|
* @bytes: a pointer to a byte array
|
|
* @size: the number of bytes to read
|
|
*
|
|
* Get a pointer in @bytes where @size bytes can be read from the
|
|
* given pad data.
|
|
*
|
|
* This function should be called with @pads STREAM_LOCK held, such as
|
|
* in the callback.
|
|
*
|
|
* Returns: The number of bytes available for consumption in the
|
|
* memory pointed to by @bytes. This can be less than @size and
|
|
* is 0 if the pad is end-of-stream.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
guint
|
|
gst_collect_pads2_read (GstCollectPads2 * pads, GstCollectData2 * data,
|
|
guint8 ** bytes, guint size)
|
|
{
|
|
guint readsize;
|
|
GstBuffer *buffer;
|
|
|
|
g_return_val_if_fail (pads != NULL, 0);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), 0);
|
|
g_return_val_if_fail (data != NULL, 0);
|
|
g_return_val_if_fail (bytes != NULL, 0);
|
|
|
|
/* no buffer, must be EOS */
|
|
if ((buffer = data->buffer) == NULL)
|
|
return 0;
|
|
|
|
readsize = MIN (size, GST_BUFFER_SIZE (buffer) - data->pos);
|
|
|
|
*bytes = GST_BUFFER_DATA (buffer) + data->pos;
|
|
|
|
return readsize;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_flush:
|
|
* @pads: the collectspads to query
|
|
* @data: the data to use
|
|
* @size: the number of bytes to flush
|
|
*
|
|
* Flush @size bytes from the pad @data.
|
|
*
|
|
* This function should be called with @pads STREAM_LOCK held, such as
|
|
* in the callback.
|
|
*
|
|
* Returns: The number of bytes flushed This can be less than @size and
|
|
* is 0 if the pad was end-of-stream.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
guint
|
|
gst_collect_pads2_flush (GstCollectPads2 * pads, GstCollectData2 * data,
|
|
guint size)
|
|
{
|
|
guint flushsize;
|
|
GstBuffer *buffer;
|
|
|
|
g_return_val_if_fail (pads != NULL, 0);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), 0);
|
|
g_return_val_if_fail (data != NULL, 0);
|
|
|
|
/* no buffer, must be EOS */
|
|
if ((buffer = data->buffer) == NULL)
|
|
return 0;
|
|
|
|
/* this is what we can flush at max */
|
|
flushsize = MIN (size, GST_BUFFER_SIZE (buffer) - data->pos);
|
|
|
|
data->pos += size;
|
|
|
|
if (data->pos >= GST_BUFFER_SIZE (buffer))
|
|
/* _clear will also reset data->pos to 0 */
|
|
gst_collect_pads2_clear (pads, data);
|
|
|
|
return flushsize;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_read_buffer:
|
|
* @pads: the collectspads to query
|
|
* @data: the data to use
|
|
* @size: the number of bytes to read
|
|
*
|
|
* Get a subbuffer of @size bytes from the given pad @data.
|
|
*
|
|
* This function should be called with @pads STREAM_LOCK held, such as in the
|
|
* callback.
|
|
*
|
|
* Since: 0.10.18
|
|
*
|
|
* Returns: A sub buffer. The size of the buffer can be less that requested.
|
|
* A return of NULL signals that the pad is end-of-stream.
|
|
* Unref the buffer after use.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
GstBuffer *
|
|
gst_collect_pads2_read_buffer (GstCollectPads2 * pads, GstCollectData2 * data,
|
|
guint size)
|
|
{
|
|
guint readsize;
|
|
GstBuffer *buffer;
|
|
|
|
g_return_val_if_fail (pads != NULL, NULL);
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), NULL);
|
|
g_return_val_if_fail (data != NULL, NULL);
|
|
|
|
/* no buffer, must be EOS */
|
|
if ((buffer = data->buffer) == NULL)
|
|
return NULL;
|
|
|
|
readsize = MIN (size, GST_BUFFER_SIZE (buffer) - data->pos);
|
|
|
|
return gst_buffer_create_sub (buffer, data->pos, readsize);
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_take_buffer:
|
|
* @pads: the collectspads to query
|
|
* @data: the data to use
|
|
* @size: the number of bytes to read
|
|
*
|
|
* Get a subbuffer of @size bytes from the given pad @data. Flushes the amount
|
|
* of read bytes.
|
|
*
|
|
* This function should be called with @pads STREAM_LOCK held, such as in the
|
|
* callback.
|
|
*
|
|
* Since: 0.10.18
|
|
*
|
|
* Returns: A sub buffer. The size of the buffer can be less that requested.
|
|
* A return of NULL signals that the pad is end-of-stream.
|
|
* Unref the buffer after use.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
GstBuffer *
|
|
gst_collect_pads2_take_buffer (GstCollectPads2 * pads, GstCollectData2 * data,
|
|
guint size)
|
|
{
|
|
GstBuffer *buffer = gst_collect_pads2_read_buffer (pads, data, size);
|
|
|
|
if (buffer) {
|
|
gst_collect_pads2_flush (pads, data, GST_BUFFER_SIZE (buffer));
|
|
}
|
|
return buffer;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_set_waiting:
|
|
* @pads: the collectspads
|
|
* @data: the data to use
|
|
* @waiting: boolean indicating whether this pad should operate
|
|
* in waiting or non-waiting mode
|
|
*
|
|
* Sets a pad to waiting or non-waiting mode, if at least this pad
|
|
* has not been created with locked waiting state,
|
|
* in which case nothing happens.
|
|
*
|
|
* This function should be called with @pads STREAM_LOCK held, such as
|
|
* in the callback.
|
|
*
|
|
* MT safe.
|
|
*/
|
|
void
|
|
gst_collect_pads2_set_waiting (GstCollectPads2 * pads, GstCollectData2 * data,
|
|
gboolean waiting)
|
|
{
|
|
g_return_if_fail (pads != NULL);
|
|
g_return_if_fail (GST_IS_COLLECT_PADS2 (pads));
|
|
g_return_if_fail (data != NULL);
|
|
|
|
GST_DEBUG_OBJECT (pads, "Setting pad %s to waiting %d, locked %d",
|
|
GST_PAD_NAME (data->pad), waiting,
|
|
GST_COLLECT_PADS2_STATE_IS_SET (data, GST_COLLECT_PADS2_STATE_LOCKED));
|
|
|
|
/* Do something only on a change and if not locked */
|
|
if (!GST_COLLECT_PADS2_STATE_IS_SET (data, GST_COLLECT_PADS2_STATE_LOCKED) &&
|
|
(GST_COLLECT_PADS2_STATE_IS_SET (data, GST_COLLECT_PADS2_STATE_WAITING) !=
|
|
! !waiting)) {
|
|
/* Set waiting state for this pad */
|
|
if (waiting)
|
|
GST_COLLECT_PADS2_STATE_SET (data, GST_COLLECT_PADS2_STATE_WAITING);
|
|
else
|
|
GST_COLLECT_PADS2_STATE_UNSET (data, GST_COLLECT_PADS2_STATE_WAITING);
|
|
/* Update number of queued pads if needed */
|
|
if (!data->buffer &&
|
|
!GST_COLLECT_PADS2_STATE_IS_SET (data, GST_COLLECT_PADS2_STATE_EOS)) {
|
|
if (waiting)
|
|
pads->queuedpads--;
|
|
else
|
|
pads->queuedpads++;
|
|
}
|
|
|
|
/* signal waiters because something changed */
|
|
GST_COLLECT_PADS2_EVT_BROADCAST (pads);
|
|
}
|
|
}
|
|
|
|
/* see if pads were added or removed and update our stats. Any pad
|
|
* added after releasing the LOCK will get collected in the next
|
|
* round.
|
|
*
|
|
* We can do a quick check by checking the cookies, that get changed
|
|
* whenever the pad list is updated.
|
|
*
|
|
* Must be called with STREAM_LOCK.
|
|
*/
|
|
static void
|
|
gst_collect_pads2_check_pads (GstCollectPads2 * pads)
|
|
{
|
|
/* the master list and cookie are protected with LOCK */
|
|
GST_OBJECT_LOCK (pads);
|
|
if (G_UNLIKELY (pads->pad_cookie != pads->cookie)) {
|
|
GSList *collected;
|
|
|
|
/* clear list and stats */
|
|
g_slist_foreach (pads->data, (GFunc) unref_data, NULL);
|
|
g_slist_free (pads->data);
|
|
pads->data = NULL;
|
|
pads->numpads = 0;
|
|
pads->queuedpads = 0;
|
|
pads->eospads = 0;
|
|
if (pads->earliest_data)
|
|
unref_data (pads->earliest_data);
|
|
pads->earliest_data = NULL;
|
|
pads->earliest_time = GST_CLOCK_TIME_NONE;
|
|
|
|
/* loop over the master pad list */
|
|
collected = pads->pad_list;
|
|
for (; collected; collected = g_slist_next (collected)) {
|
|
GstCollectData2 *data;
|
|
|
|
/* update the stats */
|
|
pads->numpads++;
|
|
data = collected->data;
|
|
if (GST_COLLECT_PADS2_STATE_IS_SET (data, GST_COLLECT_PADS2_STATE_EOS))
|
|
pads->eospads++;
|
|
else if (data->buffer || !GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_WAITING))
|
|
pads->queuedpads++;
|
|
|
|
/* add to the list of pads to collect */
|
|
ref_data (data);
|
|
/* preserve order of adding/requesting pads */
|
|
pads->data = g_slist_append (pads->data, data);
|
|
}
|
|
/* and update the cookie */
|
|
pads->cookie = pads->pad_cookie;
|
|
}
|
|
GST_OBJECT_UNLOCK (pads);
|
|
}
|
|
|
|
/* checks if all the pads are collected and call the collectfunction
|
|
*
|
|
* Should be called with STREAM_LOCK.
|
|
*
|
|
* Returns: The #GstFlowReturn of collection.
|
|
*/
|
|
static GstFlowReturn
|
|
gst_collect_pads2_check_collected (GstCollectPads2 * pads)
|
|
{
|
|
GstFlowReturn flow_ret = GST_FLOW_OK;
|
|
GstCollectPads2Function func;
|
|
gpointer user_data;
|
|
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), GST_FLOW_ERROR);
|
|
|
|
GST_OBJECT_LOCK (pads);
|
|
func = pads->func;
|
|
user_data = pads->user_data;
|
|
GST_OBJECT_UNLOCK (pads);
|
|
|
|
g_return_val_if_fail (pads->func != NULL, GST_FLOW_NOT_SUPPORTED);
|
|
|
|
/* check for new pads, update stats etc.. */
|
|
gst_collect_pads2_check_pads (pads);
|
|
|
|
if (G_UNLIKELY (pads->eospads == pads->numpads)) {
|
|
/* If all our pads are EOS just collect once to let the element
|
|
* do its final EOS handling. */
|
|
GST_DEBUG_OBJECT (pads, "All active pads (%d) are EOS, calling %s",
|
|
pads->numpads, GST_DEBUG_FUNCPTR_NAME (func));
|
|
|
|
flow_ret = func (pads, user_data);
|
|
} else {
|
|
gboolean collected = FALSE;
|
|
|
|
/* We call the collected function as long as our condition matches. */
|
|
while (((pads->queuedpads + pads->eospads) >= pads->numpads)) {
|
|
GST_DEBUG_OBJECT (pads, "All active pads (%d + %d >= %d) have data, "
|
|
"calling %s", pads->queuedpads, pads->eospads, pads->numpads,
|
|
GST_DEBUG_FUNCPTR_NAME (func));
|
|
|
|
flow_ret = func (pads, user_data);
|
|
collected = TRUE;
|
|
|
|
/* break on error */
|
|
if (flow_ret != GST_FLOW_OK)
|
|
break;
|
|
/* Don't keep looping after telling the element EOS or flushing */
|
|
if (pads->queuedpads == 0)
|
|
break;
|
|
}
|
|
if (!collected)
|
|
GST_DEBUG_OBJECT (pads, "Not all active pads (%d) have data, continuing",
|
|
pads->numpads);
|
|
}
|
|
return flow_ret;
|
|
}
|
|
|
|
|
|
/* General overview:
|
|
* - only pad with a buffer can determine earliest_data (and earliest_time)
|
|
* - only segment info determines (non-)waiting state
|
|
* - ? perhaps use _stream_time for comparison
|
|
* (which muxers might have use as well ?)
|
|
*/
|
|
|
|
/*
|
|
* Function to recalculate the waiting state of all pads.
|
|
*
|
|
* Must be called with STREAM_LOCK.
|
|
*
|
|
* Returns TRUE if a pad was set to waiting
|
|
* (from non-waiting state).
|
|
*/
|
|
static gboolean
|
|
gst_collect_pads2_recalculate_waiting (GstCollectPads2 * pads)
|
|
{
|
|
GSList *collected;
|
|
gboolean result = FALSE;
|
|
|
|
/* If earliest time is not known, there is nothing to do. */
|
|
if (pads->earliest_data == NULL)
|
|
return FALSE;
|
|
|
|
for (collected = pads->data; collected; collected = g_slist_next (collected)) {
|
|
GstCollectData2 *data = (GstCollectData2 *) collected->data;
|
|
int cmp_res;
|
|
|
|
/* check if pad has a segment */
|
|
if (data->segment.format == GST_FORMAT_UNDEFINED)
|
|
continue;
|
|
|
|
/* check segment format */
|
|
if (data->segment.format != GST_FORMAT_TIME) {
|
|
GST_ERROR_OBJECT (pads, "GstCollectPads2 can handle only time segments.");
|
|
continue;
|
|
}
|
|
|
|
/* check if the waiting state should be changed */
|
|
cmp_res = pads->compare_func (pads, data, data->segment.start,
|
|
pads->earliest_data, pads->earliest_time, pads->compare_user_data);
|
|
if (cmp_res > 0)
|
|
/* stop waiting */
|
|
gst_collect_pads2_set_waiting (pads, data, FALSE);
|
|
else {
|
|
if (!GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_WAITING)) {
|
|
/* start waiting */
|
|
gst_collect_pads2_set_waiting (pads, data, TRUE);
|
|
result = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* gst_collect_pads2_find_best_pad:
|
|
* @pads: the collectpads to use
|
|
* @data: returns the collectdata for earliest data
|
|
* @time: returns the earliest available buffertime
|
|
*
|
|
* Find the oldest/best pad, i.e. pad holding the oldest buffer and
|
|
* and return the corresponding #GstCollectData2 and buffertime.
|
|
*
|
|
* This function should be called with STREAM_LOCK held,
|
|
* such as in the callback.
|
|
*/
|
|
static void
|
|
gst_collect_pads2_find_best_pad (GstCollectPads2 * pads,
|
|
GstCollectData2 ** data, GstClockTime * time)
|
|
{
|
|
GSList *collected;
|
|
GstCollectData2 *best = NULL;
|
|
GstClockTime best_time = GST_CLOCK_TIME_NONE;
|
|
|
|
g_return_if_fail (data != NULL);
|
|
g_return_if_fail (time != NULL);
|
|
|
|
for (collected = pads->data; collected; collected = g_slist_next (collected)) {
|
|
GstBuffer *buffer;
|
|
GstCollectData2 *data = (GstCollectData2 *) collected->data;
|
|
GstClockTime timestamp;
|
|
|
|
buffer = gst_collect_pads2_peek (pads, data);
|
|
/* if we have a buffer check if it is better then the current best one */
|
|
if (buffer != NULL) {
|
|
timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
gst_buffer_unref (buffer);
|
|
if (best == NULL || pads->compare_func (pads, data, timestamp,
|
|
best, best_time, pads->compare_user_data) < 0) {
|
|
best = data;
|
|
best_time = timestamp;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* set earliest time */
|
|
*data = best;
|
|
*time = best_time;
|
|
|
|
GST_DEBUG_OBJECT (pads, "best pad %s, best time %" GST_TIME_FORMAT,
|
|
best ? GST_PAD_NAME (((GstCollectData2 *) best)->pad) : "(nil)",
|
|
GST_TIME_ARGS (best_time));
|
|
}
|
|
|
|
/*
|
|
* Function to recalculate earliest_data and earliest_timestamp. This also calls
|
|
* gst_collect_pads2_recalculate_waiting
|
|
*
|
|
* Must be called with STREAM_LOCK.
|
|
*/
|
|
static gboolean
|
|
gst_collect_pads2_recalculate_full (GstCollectPads2 * pads)
|
|
{
|
|
if (pads->earliest_data)
|
|
unref_data (pads->earliest_data);
|
|
gst_collect_pads2_find_best_pad (pads, &pads->earliest_data,
|
|
&pads->earliest_time);
|
|
if (pads->earliest_data)
|
|
ref_data (pads->earliest_data);
|
|
return gst_collect_pads2_recalculate_waiting (pads);
|
|
}
|
|
|
|
/*
|
|
* Default collect callback triggered when #GstCollectPads2 gathered all data.
|
|
*
|
|
* Called with STREAM_LOCK.
|
|
*/
|
|
static GstFlowReturn
|
|
gst_collect_pads2_default_collected (GstCollectPads2 * pads, gpointer user_data)
|
|
{
|
|
GstCollectData2 *best = NULL;
|
|
GstBuffer *buffer;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstCollectPads2BufferFunction func;
|
|
gpointer buffer_user_data;
|
|
|
|
g_return_val_if_fail (GST_IS_COLLECT_PADS2 (pads), GST_FLOW_ERROR);
|
|
|
|
GST_OBJECT_LOCK (pads);
|
|
func = pads->buffer_func;
|
|
buffer_user_data = pads->buffer_user_data;
|
|
GST_OBJECT_UNLOCK (pads);
|
|
|
|
g_return_val_if_fail (func != NULL, GST_FLOW_NOT_SUPPORTED);
|
|
|
|
/* Find the oldest pad at all cost */
|
|
if (gst_collect_pads2_recalculate_full (pads)) {
|
|
/* waiting was switched on,
|
|
* so give another thread a chance to deliver a possibly
|
|
* older buffer; don't charge on yet with the current oldest */
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
best = pads->earliest_data;
|
|
|
|
/* No data collected means EOS. */
|
|
if (G_UNLIKELY (best == NULL)) {
|
|
ret = func (pads, best, NULL, buffer_user_data);
|
|
if (ret == GST_FLOW_OK)
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
goto done;
|
|
}
|
|
|
|
/* make sure that the pad we take a buffer from is waiting;
|
|
* otherwise popping a buffer will seem not to have happened
|
|
* and collectpads can get into a busy loop */
|
|
gst_collect_pads2_set_waiting (pads, best, TRUE);
|
|
|
|
/* Send buffer */
|
|
buffer = gst_collect_pads2_pop (pads, best);
|
|
ret = func (pads, best, buffer, buffer_user_data);
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Default timestamp compare function.
|
|
*/
|
|
static gint
|
|
gst_collect_pads2_default_compare_func (GstCollectPads2 * pads,
|
|
GstCollectData2 * data1, GstClockTime timestamp1,
|
|
GstCollectData2 * data2, GstClockTime timestamp2, gpointer user_data)
|
|
{
|
|
|
|
GST_LOG_OBJECT (pads, "comparing %" GST_TIME_FORMAT
|
|
" and %" GST_TIME_FORMAT, GST_TIME_ARGS (timestamp1),
|
|
GST_TIME_ARGS (timestamp2));
|
|
/* non-valid timestamps go first as they are probably headers or so */
|
|
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp1)))
|
|
return GST_CLOCK_TIME_IS_VALID (timestamp2) ? -1 : 0;
|
|
|
|
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp2)))
|
|
return 1;
|
|
|
|
/* compare timestamp */
|
|
if (timestamp1 < timestamp2)
|
|
return -1;
|
|
|
|
if (timestamp1 > timestamp2)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static gboolean
|
|
gst_collect_pads2_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
gboolean res = FALSE, need_unlock = FALSE;
|
|
GstCollectData2 *data;
|
|
GstCollectPads2 *pads;
|
|
GstCollectPads2EventFunction event_func;
|
|
GstCollectPads2BufferFunction buffer_func;
|
|
gpointer event_user_data;
|
|
|
|
/* some magic to get the managing collect_pads2 */
|
|
GST_OBJECT_LOCK (pad);
|
|
data = (GstCollectData2 *) gst_pad_get_element_private (pad);
|
|
if (G_UNLIKELY (data == NULL))
|
|
goto pad_removed;
|
|
ref_data (data);
|
|
GST_OBJECT_UNLOCK (pad);
|
|
|
|
res = FALSE;
|
|
|
|
pads = data->collect;
|
|
|
|
GST_DEBUG ("Got %s event on pad %s:%s", GST_EVENT_TYPE_NAME (event),
|
|
GST_DEBUG_PAD_NAME (data->pad));
|
|
|
|
GST_OBJECT_LOCK (pads);
|
|
event_func = pads->event_func;
|
|
event_user_data = pads->event_user_data;
|
|
buffer_func = pads->buffer_func;
|
|
GST_OBJECT_UNLOCK (pads);
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_FLUSH_START:
|
|
{
|
|
/* forward event to unblock check_collected */
|
|
if (event_func)
|
|
res = event_func (pads, data, event, event_user_data);
|
|
if (!res)
|
|
res = gst_pad_event_default (pad, event);
|
|
|
|
/* now unblock the chain function.
|
|
* no cond per pad, so they all unblock,
|
|
* non-flushing block again */
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
GST_COLLECT_PADS2_STATE_SET (data, GST_COLLECT_PADS2_STATE_FLUSHING);
|
|
gst_collect_pads2_clear (pads, data);
|
|
|
|
/* cater for possible default muxing functionality */
|
|
if (buffer_func) {
|
|
/* restore to initial state */
|
|
gst_collect_pads2_set_waiting (pads, data, TRUE);
|
|
/* if the current pad is affected, reset state, recalculate later */
|
|
if (pads->earliest_data == data) {
|
|
unref_data (data);
|
|
pads->earliest_data = NULL;
|
|
pads->earliest_time = GST_CLOCK_TIME_NONE;
|
|
}
|
|
}
|
|
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
|
|
/* event already cleaned up by forwarding */
|
|
res = TRUE;
|
|
goto done;
|
|
}
|
|
case GST_EVENT_FLUSH_STOP:
|
|
{
|
|
/* flush the 1 buffer queue */
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
GST_COLLECT_PADS2_STATE_UNSET (data, GST_COLLECT_PADS2_STATE_FLUSHING);
|
|
gst_collect_pads2_clear (pads, data);
|
|
/* we need new segment info after the flush */
|
|
gst_segment_init (&data->segment, GST_FORMAT_UNDEFINED);
|
|
GST_COLLECT_PADS2_STATE_UNSET (data, GST_COLLECT_PADS2_STATE_NEW_SEGMENT);
|
|
/* if the pad was EOS, remove the EOS flag and
|
|
* decrement the number of eospads */
|
|
if (G_UNLIKELY (GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_EOS))) {
|
|
if (!GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_WAITING))
|
|
pads->queuedpads++;
|
|
pads->eospads--;
|
|
GST_COLLECT_PADS2_STATE_UNSET (data, GST_COLLECT_PADS2_STATE_EOS);
|
|
}
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
|
|
/* forward event */
|
|
goto forward_or_default;
|
|
}
|
|
case GST_EVENT_EOS:
|
|
{
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
/* if the pad was not EOS, make it EOS and so we
|
|
* have one more eospad */
|
|
if (G_LIKELY (!GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_EOS))) {
|
|
GST_COLLECT_PADS2_STATE_SET (data, GST_COLLECT_PADS2_STATE_EOS);
|
|
if (!GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_WAITING))
|
|
pads->queuedpads--;
|
|
pads->eospads++;
|
|
}
|
|
/* check if we need collecting anything, we ignore the result. */
|
|
gst_collect_pads2_check_collected (pads);
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
|
|
goto forward_or_eat;
|
|
}
|
|
case GST_EVENT_NEWSEGMENT:
|
|
{
|
|
gint64 start, stop, time;
|
|
gdouble rate, arate;
|
|
GstFormat format;
|
|
gboolean update;
|
|
gint cmp_res;
|
|
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
|
|
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
|
|
&start, &stop, &time);
|
|
|
|
GST_DEBUG_OBJECT (data->pad, "got newsegment, start %" GST_TIME_FORMAT
|
|
", stop %" GST_TIME_FORMAT, GST_TIME_ARGS (start),
|
|
GST_TIME_ARGS (stop));
|
|
|
|
gst_segment_set_newsegment_full (&data->segment, update, rate, arate,
|
|
format, start, stop, time);
|
|
|
|
GST_COLLECT_PADS2_STATE_SET (data, GST_COLLECT_PADS2_STATE_NEW_SEGMENT);
|
|
|
|
/* default muxing functionality */
|
|
if (!buffer_func)
|
|
goto newsegment_done;
|
|
|
|
/* default collection can not handle other segment formats than time */
|
|
if (format != GST_FORMAT_TIME) {
|
|
GST_ERROR_OBJECT (pads, "GstCollectPads2 default collecting "
|
|
"can only handle time segments.");
|
|
goto newsegment_done;
|
|
}
|
|
|
|
/* If oldest time is not known, or current pad got newsegment;
|
|
* recalculate the state */
|
|
if (!pads->earliest_data || pads->earliest_data == data) {
|
|
gst_collect_pads2_recalculate_full (pads);
|
|
goto newsegment_done;
|
|
}
|
|
|
|
/* Check if the waiting state of the pad should change. */
|
|
cmp_res = pads->compare_func (pads, data, start, pads->earliest_data,
|
|
pads->earliest_time, pads->compare_user_data);
|
|
|
|
if (cmp_res > 0)
|
|
/* Stop waiting */
|
|
gst_collect_pads2_set_waiting (pads, data, FALSE);
|
|
|
|
newsegment_done:
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
/* we must not forward this event since multiple segments will be
|
|
* accumulated and this is certainly not what we want. */
|
|
goto forward_or_eat;
|
|
}
|
|
default:
|
|
/* forward other events */
|
|
goto forward_or_default;
|
|
}
|
|
|
|
forward_or_default:
|
|
if (GST_EVENT_IS_SERIALIZED (event)) {
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
need_unlock = TRUE;
|
|
}
|
|
if (event_func)
|
|
res = event_func (pads, data, event, event_user_data);
|
|
if (!res)
|
|
res = gst_pad_event_default (pad, event);
|
|
if (need_unlock)
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
goto done;
|
|
|
|
forward_or_eat:
|
|
if (GST_EVENT_IS_SERIALIZED (event)) {
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
need_unlock = TRUE;
|
|
}
|
|
if (event_func)
|
|
res = event_func (pads, data, event, event_user_data);
|
|
if (!res) {
|
|
gst_event_unref (event);
|
|
res = TRUE;
|
|
}
|
|
if (need_unlock)
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
goto done;
|
|
|
|
done:
|
|
unref_data (data);
|
|
return res;
|
|
|
|
/* ERRORS */
|
|
pad_removed:
|
|
{
|
|
GST_DEBUG ("%s got removed from collectpads", GST_OBJECT_NAME (pad));
|
|
GST_OBJECT_UNLOCK (pad);
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* For each buffer we receive we check if our collected condition is reached
|
|
* and if so we call the collected function. When this is done we check if
|
|
* data has been unqueued. If data is still queued we wait holding the stream
|
|
* lock to make sure no EOS event can happen while we are ready to be
|
|
* collected
|
|
*/
|
|
static GstFlowReturn
|
|
gst_collect_pads2_chain (GstPad * pad, GstBuffer * buffer)
|
|
{
|
|
GstCollectData2 *data;
|
|
GstCollectPads2 *pads;
|
|
guint64 size;
|
|
GstFlowReturn ret;
|
|
GstBuffer **buffer_p;
|
|
guint32 cookie;
|
|
GstCollectPads2BufferFunction prepare_buffer_func;
|
|
gpointer prepare_buffer_user_data;
|
|
|
|
GST_DEBUG ("Got buffer for pad %s:%s", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
/* some magic to get the managing collect_pads2 */
|
|
GST_OBJECT_LOCK (pad);
|
|
data = (GstCollectData2 *) gst_pad_get_element_private (pad);
|
|
if (G_UNLIKELY (data == NULL))
|
|
goto no_data;
|
|
ref_data (data);
|
|
GST_OBJECT_UNLOCK (pad);
|
|
|
|
pads = data->collect;
|
|
GST_OBJECT_LOCK (pads);
|
|
prepare_buffer_func = pads->prepare_buffer_func;
|
|
prepare_buffer_user_data = pads->prepare_buffer_user_data;
|
|
GST_OBJECT_UNLOCK (pads);
|
|
|
|
size = GST_BUFFER_SIZE (buffer);
|
|
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
/* if not started, bail out */
|
|
if (G_UNLIKELY (!pads->started))
|
|
goto not_started;
|
|
/* check if this pad is flushing */
|
|
if (G_UNLIKELY (GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_FLUSHING)))
|
|
goto flushing;
|
|
/* pad was EOS, we can refuse this data */
|
|
if (G_UNLIKELY (GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_EOS)))
|
|
goto unexpected;
|
|
|
|
GST_DEBUG_OBJECT (pads, "Queuing buffer %p for pad %s:%s", buffer,
|
|
GST_DEBUG_PAD_NAME (pad));
|
|
|
|
if (prepare_buffer_func) {
|
|
ret = prepare_buffer_func (pads, data, buffer, prepare_buffer_user_data);
|
|
if (ret == GST_COLLECT_PADS2_FLOW_DROP) {
|
|
GST_DEBUG_OBJECT (pads, "Dropping buffer as requested");
|
|
ret = GST_FLOW_OK;
|
|
goto unlock_done;
|
|
} else if (ret == GST_FLOW_UNEXPECTED) {
|
|
goto unexpected;
|
|
} else if (ret != GST_FLOW_OK) {
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
/* One more pad has data queued */
|
|
if (GST_COLLECT_PADS2_STATE_IS_SET (data, GST_COLLECT_PADS2_STATE_WAITING))
|
|
pads->queuedpads++;
|
|
buffer_p = &data->buffer;
|
|
gst_buffer_replace (buffer_p, buffer);
|
|
|
|
/* update segment last position if in TIME */
|
|
if (G_LIKELY (data->segment.format == GST_FORMAT_TIME)) {
|
|
GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (timestamp))
|
|
gst_segment_set_last_stop (&data->segment, GST_FORMAT_TIME, timestamp);
|
|
}
|
|
|
|
/* While we have data queued on this pad try to collect stuff */
|
|
do {
|
|
/* Check if our collected condition is matched and call the collected
|
|
* function if it is */
|
|
ret = gst_collect_pads2_check_collected (pads);
|
|
/* when an error occurs, we want to report this back to the caller ASAP
|
|
* without having to block if the buffer was not popped */
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
goto error;
|
|
|
|
/* data was consumed, we can exit and accept new data */
|
|
if (data->buffer == NULL)
|
|
break;
|
|
|
|
/* Having the _INIT here means we don't care about any broadcast up to here
|
|
* (most of which occur with STREAM_LOCK held, so could not have happened
|
|
* anyway). We do care about e.g. a remove initiated broadcast as of this
|
|
* point. Putting it here also makes this thread ignores any evt it raised
|
|
* itself (as is a usual WAIT semantic).
|
|
*/
|
|
GST_COLLECT_PADS2_EVT_INIT (cookie);
|
|
|
|
/* pad could be removed and re-added */
|
|
unref_data (data);
|
|
GST_OBJECT_LOCK (pad);
|
|
if (G_UNLIKELY ((data = gst_pad_get_element_private (pad)) == NULL))
|
|
goto pad_removed;
|
|
ref_data (data);
|
|
GST_OBJECT_UNLOCK (pad);
|
|
|
|
GST_DEBUG_OBJECT (pads, "Pad %s:%s has a buffer queued, waiting",
|
|
GST_DEBUG_PAD_NAME (pad));
|
|
|
|
/* wait to be collected, this must happen from another thread triggered
|
|
* by the _chain function of another pad. We release the lock so we
|
|
* can get stopped or flushed as well. We can however not get EOS
|
|
* because we still hold the STREAM_LOCK.
|
|
*/
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
GST_COLLECT_PADS2_EVT_WAIT (pads, cookie);
|
|
GST_COLLECT_PADS2_STREAM_LOCK (pads);
|
|
|
|
GST_DEBUG_OBJECT (pads, "Pad %s:%s resuming", GST_DEBUG_PAD_NAME (pad));
|
|
|
|
/* after a signal, we could be stopped */
|
|
if (G_UNLIKELY (!pads->started))
|
|
goto not_started;
|
|
/* check if this pad is flushing */
|
|
if (G_UNLIKELY (GST_COLLECT_PADS2_STATE_IS_SET (data,
|
|
GST_COLLECT_PADS2_STATE_FLUSHING)))
|
|
goto flushing;
|
|
}
|
|
while (data->buffer != NULL);
|
|
|
|
unlock_done:
|
|
GST_COLLECT_PADS2_STREAM_UNLOCK (pads);
|
|
unref_data (data);
|
|
gst_buffer_unref (buffer);
|
|
return ret;
|
|
|
|
pad_removed:
|
|
{
|
|
GST_WARNING ("%s got removed from collectpads", GST_OBJECT_NAME (pad));
|
|
GST_OBJECT_UNLOCK (pad);
|
|
ret = GST_FLOW_NOT_LINKED;
|
|
goto unlock_done;
|
|
}
|
|
/* ERRORS */
|
|
no_data:
|
|
{
|
|
GST_DEBUG ("%s got removed from collectpads", GST_OBJECT_NAME (pad));
|
|
GST_OBJECT_UNLOCK (pad);
|
|
gst_buffer_unref (buffer);
|
|
return GST_FLOW_NOT_LINKED;
|
|
}
|
|
not_started:
|
|
{
|
|
GST_DEBUG ("not started");
|
|
gst_collect_pads2_clear (pads, data);
|
|
ret = GST_FLOW_WRONG_STATE;
|
|
goto unlock_done;
|
|
}
|
|
flushing:
|
|
{
|
|
GST_DEBUG ("pad %s:%s is flushing", GST_DEBUG_PAD_NAME (pad));
|
|
gst_collect_pads2_clear (pads, data);
|
|
ret = GST_FLOW_WRONG_STATE;
|
|
goto unlock_done;
|
|
}
|
|
unexpected:
|
|
{
|
|
/* we should not post an error for this, just inform upstream that
|
|
* we don't expect anything anymore */
|
|
GST_DEBUG ("pad %s:%s is eos", GST_DEBUG_PAD_NAME (pad));
|
|
ret = GST_FLOW_UNEXPECTED;
|
|
goto unlock_done;
|
|
}
|
|
error:
|
|
{
|
|
/* we print the error, the element should post a reasonable error
|
|
* message for fatal errors */
|
|
GST_DEBUG ("collect failed, reason %d (%s)", ret, gst_flow_get_name (ret));
|
|
gst_collect_pads2_clear (pads, data);
|
|
goto unlock_done;
|
|
}
|
|
}
|