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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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e7d5733178
mpegtsmux can't negotiate caps with upstream/downstream and always outputs specific caps based on the input streams. This will always happen before it produces the first buffers. By having the default aggregator negotiation enabled the same caps would be pushed twice in the beginning, and again every time a reconfigure event is received. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2381>
2713 lines
83 KiB
C
2713 lines
83 KiB
C
/*
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* Copyright 2006, 2007, 2008, 2009, 2010 Fluendo S.A.
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* Authors: Jan Schmidt <jan@fluendo.com>
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* Kapil Agrawal <kapil@fluendo.com>
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* Julien Moutte <julien@fluendo.com>
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*
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* Copyright (C) 2011 Jan Schmidt <thaytan@noraisin.net>
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*
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* This library is licensed under 3 different licenses and you
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* can choose to use it under the terms of any one of them. The
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* three licenses are the MPL 1.1, the LGPL and the MIT license.
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*
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* MPL:
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/.
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* LGPL:
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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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* MIT:
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*
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* Unless otherwise indicated, Source Code is licensed under MIT license.
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* See further explanation attached in License Statement (distributed in the file
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* LICENSE).
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is furnished to do
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* so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* SPDX-License-Identifier: MPL-1.1 OR MIT OR LGPL-2.0-or-later
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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 <stdio.h>
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#include <string.h>
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#include <gst/tag/tag.h>
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#include <gst/video/video.h>
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#include <gst/mpegts/mpegts.h>
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#include <gst/pbutils/pbutils.h>
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#include <gst/videoparsers/gstjpeg2000parse.h>
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#include <gst/video/video-color.h>
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#include "gstbasetsmux.h"
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#include "gstbasetsmuxaac.h"
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#include "gstbasetsmuxttxt.h"
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#include "gstbasetsmuxopus.h"
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#include "gstbasetsmuxjpeg2000.h"
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GST_DEBUG_CATEGORY (gst_base_ts_mux_debug);
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#define GST_CAT_DEFAULT gst_base_ts_mux_debug
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/* GstBaseTsMuxPad */
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G_DEFINE_TYPE (GstBaseTsMuxPad, gst_base_ts_mux_pad, GST_TYPE_AGGREGATOR_PAD);
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/* Internals */
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static void
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gst_base_ts_mux_pad_reset (GstBaseTsMuxPad * pad)
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{
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pad->dts = GST_CLOCK_STIME_NONE;
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pad->prog_id = -1;
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if (pad->free_func)
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pad->free_func (pad->prepare_data);
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pad->prepare_data = NULL;
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pad->prepare_func = NULL;
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pad->free_func = NULL;
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if (pad->codec_data)
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gst_buffer_replace (&pad->codec_data, NULL);
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/* reference owned elsewhere */
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pad->stream = NULL;
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pad->prog = NULL;
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if (pad->language) {
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g_free (pad->language);
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pad->language = NULL;
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}
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}
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/* GstAggregatorPad implementation */
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static GstFlowReturn
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gst_base_ts_mux_pad_flush (GstAggregatorPad * agg_pad, GstAggregator * agg)
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{
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GList *cur;
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GstBaseTsMux *mux = GST_BASE_TS_MUX (agg);
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/* Send initial segments again after a flush-stop, and also resend the
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* header sections */
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g_mutex_lock (&mux->lock);
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mux->first = TRUE;
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/* output PAT, SI tables */
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tsmux_resend_pat (mux->tsmux);
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tsmux_resend_si (mux->tsmux);
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/* output PMT for each program */
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for (cur = mux->tsmux->programs; cur; cur = cur->next) {
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TsMuxProgram *program = (TsMuxProgram *) cur->data;
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tsmux_resend_pmt (program);
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}
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g_mutex_unlock (&mux->lock);
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return GST_FLOW_OK;
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}
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/* GObject implementation */
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static void
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gst_base_ts_mux_pad_dispose (GObject * obj)
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{
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GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (obj);
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gst_base_ts_mux_pad_reset (ts_pad);
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G_OBJECT_CLASS (gst_base_ts_mux_pad_parent_class)->dispose (obj);
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}
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static void
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gst_base_ts_mux_pad_class_init (GstBaseTsMuxPadClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstAggregatorPadClass *gstaggpad_class = GST_AGGREGATOR_PAD_CLASS (klass);
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gobject_class->dispose = gst_base_ts_mux_pad_dispose;
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gstaggpad_class->flush = gst_base_ts_mux_pad_flush;
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gst_type_mark_as_plugin_api (GST_TYPE_BASE_TS_MUX, 0);
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}
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static void
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gst_base_ts_mux_pad_init (GstBaseTsMuxPad * vaggpad)
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{
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}
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/* GstBaseTsMux */
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enum
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{
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PROP_0,
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PROP_PROG_MAP,
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PROP_PAT_INTERVAL,
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PROP_PMT_INTERVAL,
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PROP_ALIGNMENT,
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PROP_SI_INTERVAL,
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PROP_BITRATE,
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PROP_PCR_INTERVAL,
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PROP_SCTE_35_PID,
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PROP_SCTE_35_NULL_INTERVAL
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};
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#define DEFAULT_SCTE_35_PID 0
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#define BASETSMUX_DEFAULT_ALIGNMENT -1
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#define CLOCK_BASE 9LL
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#define CLOCK_FREQ (CLOCK_BASE * 10000) /* 90 kHz PTS clock */
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#define CLOCK_FREQ_SCR (CLOCK_FREQ * 300) /* 27 MHz SCR clock */
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#define TS_MUX_CLOCK_BASE (TSMUX_CLOCK_FREQ * 10 * 360)
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#define GSTTIME_TO_MPEGTIME(time) \
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(((time) > 0 ? (gint64) 1 : (gint64) -1) * \
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(gint64) gst_util_uint64_scale (ABS(time), CLOCK_BASE, GST_MSECOND/10))
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/* 27 MHz SCR conversions: */
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#define MPEG_SYS_TIME_TO_GSTTIME(time) (gst_util_uint64_scale ((time), \
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GST_USECOND, CLOCK_FREQ_SCR / 1000000))
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#define GSTTIME_TO_MPEG_SYS_TIME(time) (gst_util_uint64_scale ((time), \
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CLOCK_FREQ_SCR / 1000000, GST_USECOND))
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#define DEFAULT_PROG_ID 0
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static GstStaticPadTemplate gst_base_ts_mux_src_factory =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/mpegts, "
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"systemstream = (boolean) true, " "packetsize = (int) { 188, 192} ")
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);
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typedef struct
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{
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GstMapInfo map_info;
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GstBuffer *buffer;
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} StreamData;
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G_DEFINE_TYPE_WITH_CODE (GstBaseTsMux, gst_base_ts_mux, GST_TYPE_AGGREGATOR,
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gst_mpegts_initialize ());
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/* Internals */
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/* Takes over the ref on the buffer */
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static StreamData *
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stream_data_new (GstBuffer * buffer)
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{
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StreamData *res = g_new (StreamData, 1);
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res->buffer = buffer;
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gst_buffer_map (buffer, &(res->map_info), GST_MAP_READ);
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return res;
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}
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static void
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stream_data_free (StreamData * data)
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{
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if (data) {
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gst_buffer_unmap (data->buffer, &data->map_info);
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gst_buffer_unref (data->buffer);
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g_free (data);
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}
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}
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#define parent_class gst_base_ts_mux_parent_class
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static void
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gst_base_ts_mux_set_header_on_caps (GstBaseTsMux * mux)
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{
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GstBuffer *buf;
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GstStructure *structure;
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GValue array = { 0 };
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GValue value = { 0 };
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GstCaps *caps;
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caps = gst_pad_get_pad_template_caps (GST_AGGREGATOR_SRC_PAD (mux));
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caps = gst_caps_make_writable (caps);
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_set (structure, "packetsize", G_TYPE_INT, mux->packet_size,
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NULL);
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g_value_init (&array, GST_TYPE_ARRAY);
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GST_LOG_OBJECT (mux, "setting %u packets into streamheader",
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g_queue_get_length (&mux->streamheader));
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while ((buf = GST_BUFFER (g_queue_pop_head (&mux->streamheader)))) {
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g_value_init (&value, GST_TYPE_BUFFER);
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gst_value_take_buffer (&value, buf);
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gst_value_array_append_value (&array, &value);
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g_value_unset (&value);
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}
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gst_structure_set_value (structure, "streamheader", &array);
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gst_aggregator_set_src_caps (GST_AGGREGATOR (mux), caps);
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g_value_unset (&array);
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gst_caps_unref (caps);
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}
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static gboolean
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steal_si_section (GstMpegtsSectionType * type, TsMuxSection * section,
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TsMux * mux)
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{
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g_hash_table_insert (mux->si_sections, type, section);
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return TRUE;
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}
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/* Must be called with mux->lock held */
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static void
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gst_base_ts_mux_reset (GstBaseTsMux * mux, gboolean alloc)
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{
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GstBuffer *buf;
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GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux);
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GHashTable *si_sections = NULL;
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GList *l;
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mux->first = TRUE;
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mux->last_flow_ret = GST_FLOW_OK;
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mux->last_ts = GST_CLOCK_TIME_NONE;
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mux->is_delta = TRUE;
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mux->is_header = FALSE;
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mux->streamheader_sent = FALSE;
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mux->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
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gst_event_replace (&mux->force_key_unit_event, NULL);
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if (mux->out_adapter)
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gst_adapter_clear (mux->out_adapter);
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mux->output_ts_offset = GST_CLOCK_STIME_NONE;
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if (mux->tsmux) {
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if (mux->tsmux->si_sections)
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si_sections = g_hash_table_ref (mux->tsmux->si_sections);
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tsmux_free (mux->tsmux);
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mux->tsmux = NULL;
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}
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if (mux->programs) {
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g_hash_table_destroy (mux->programs);
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}
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mux->programs = g_hash_table_new (g_direct_hash, g_direct_equal);
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while ((buf = GST_BUFFER (g_queue_pop_head (&mux->streamheader))))
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gst_buffer_unref (buf);
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gst_event_replace (&mux->force_key_unit_event, NULL);
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gst_buffer_replace (&mux->out_buffer, NULL);
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GST_OBJECT_LOCK (mux);
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for (l = GST_ELEMENT (mux)->sinkpads; l; l = l->next) {
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gst_base_ts_mux_pad_reset (GST_BASE_TS_MUX_PAD (l->data));
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}
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GST_OBJECT_UNLOCK (mux);
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if (alloc) {
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g_assert (klass->create_ts_mux);
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mux->tsmux = klass->create_ts_mux (mux);
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/* Preserve user-specified sections across resets */
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if (si_sections)
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g_hash_table_foreach_steal (si_sections, (GHRFunc) steal_si_section,
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mux->tsmux);
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}
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if (si_sections)
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g_hash_table_unref (si_sections);
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mux->last_scte35_event_seqnum = GST_SEQNUM_INVALID;
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if (klass->reset)
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klass->reset (mux);
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}
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static void
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release_buffer_cb (guint8 * data, void *user_data)
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{
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stream_data_free ((StreamData *) user_data);
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}
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/* Must be called with mux->lock held */
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static GstFlowReturn
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gst_base_ts_mux_create_or_update_stream (GstBaseTsMux * mux,
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GstBaseTsMuxPad * ts_pad, GstCaps * caps)
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{
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GstStructure *s;
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guint st = TSMUX_ST_RESERVED;
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const gchar *mt;
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const GValue *value = NULL;
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GstBuffer *codec_data = NULL;
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guint8 opus_channel_config_code = 0;
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guint16 profile = GST_JPEG2000_PARSE_PROFILE_NONE;
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guint8 main_level = 0;
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guint32 max_rate = 0;
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guint8 color_spec = 0;
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const gchar *stream_format = NULL;
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const char *interlace_mode = NULL;
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gchar *pmt_name;
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GST_DEBUG_OBJECT (ts_pad,
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"%s stream with PID 0x%04x for caps %" GST_PTR_FORMAT,
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ts_pad->stream ? "Recreating" : "Creating", ts_pad->pid, caps);
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s = gst_caps_get_structure (caps, 0);
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mt = gst_structure_get_name (s);
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value = gst_structure_get_value (s, "codec_data");
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if (value != NULL)
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codec_data = gst_value_get_buffer (value);
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g_clear_pointer (&ts_pad->codec_data, gst_buffer_unref);
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ts_pad->prepare_func = NULL;
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stream_format = gst_structure_get_string (s, "stream-format");
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if (strcmp (mt, "video/x-dirac") == 0) {
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st = TSMUX_ST_VIDEO_DIRAC;
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} else if (strcmp (mt, "audio/x-ac3") == 0) {
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st = TSMUX_ST_PS_AUDIO_AC3;
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} else if (strcmp (mt, "audio/x-dts") == 0) {
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st = TSMUX_ST_PS_AUDIO_DTS;
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} else if (strcmp (mt, "audio/x-lpcm") == 0) {
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st = TSMUX_ST_PS_AUDIO_LPCM;
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} else if (strcmp (mt, "video/x-h264") == 0) {
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st = TSMUX_ST_VIDEO_H264;
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} else if (strcmp (mt, "video/x-h265") == 0) {
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st = TSMUX_ST_VIDEO_HEVC;
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} else if (strcmp (mt, "audio/mpeg") == 0) {
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gint mpegversion;
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if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
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GST_ERROR_OBJECT (ts_pad, "caps missing mpegversion");
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goto not_negotiated;
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}
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switch (mpegversion) {
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case 1:{
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int mpegaudioversion = 1; /* Assume mpegaudioversion=1 for backwards compatibility */
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(void) gst_structure_get_int (s, "mpegaudioversion", &mpegaudioversion);
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if (mpegaudioversion == 1)
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st = TSMUX_ST_AUDIO_MPEG1;
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else
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st = TSMUX_ST_AUDIO_MPEG2;
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break;
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}
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case 2:{
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/* mpegversion=2 in GStreamer refers to MPEG-2 Part 7 audio, */
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st = TSMUX_ST_AUDIO_AAC;
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/* Check the stream format. If raw, make dummy internal codec data from the caps */
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if (g_strcmp0 (stream_format, "raw") == 0) {
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ts_pad->codec_data =
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gst_base_ts_mux_aac_mpeg2_make_codec_data (mux, caps);
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ts_pad->prepare_func = gst_base_ts_mux_prepare_aac_mpeg2;
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if (ts_pad->codec_data == NULL) {
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GST_ERROR_OBJECT (mux, "Invalid or incomplete caps for MPEG-2 AAC");
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goto not_negotiated;
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}
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}
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break;
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}
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case 4:
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{
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st = TSMUX_ST_AUDIO_AAC;
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/* Check the stream format. We need codec_data with RAW streams and mpegversion=4 */
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if (g_strcmp0 (stream_format, "raw") == 0) {
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if (codec_data) {
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GST_DEBUG_OBJECT (ts_pad,
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"we have additional codec data (%" G_GSIZE_FORMAT " bytes)",
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gst_buffer_get_size (codec_data));
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ts_pad->codec_data = gst_buffer_ref (codec_data);
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ts_pad->prepare_func = gst_base_ts_mux_prepare_aac_mpeg4;
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} else {
|
|
ts_pad->codec_data = NULL;
|
|
GST_ERROR_OBJECT (mux, "Need codec_data for raw MPEG-4 AAC");
|
|
goto not_negotiated;
|
|
}
|
|
} else if (codec_data) {
|
|
ts_pad->codec_data = gst_buffer_ref (codec_data);
|
|
} else {
|
|
ts_pad->codec_data = NULL;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
GST_WARNING_OBJECT (ts_pad, "unsupported mpegversion %d", mpegversion);
|
|
goto not_negotiated;
|
|
}
|
|
} else if (strcmp (mt, "video/mpeg") == 0) {
|
|
gint mpegversion;
|
|
|
|
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
|
|
GST_ERROR_OBJECT (ts_pad, "caps missing mpegversion");
|
|
goto not_negotiated;
|
|
}
|
|
|
|
switch (mpegversion) {
|
|
case 1:
|
|
st = TSMUX_ST_VIDEO_MPEG1;
|
|
break;
|
|
case 2:
|
|
st = TSMUX_ST_VIDEO_MPEG2;
|
|
break;
|
|
case 4:
|
|
st = TSMUX_ST_VIDEO_MPEG4;
|
|
break;
|
|
default:
|
|
GST_WARNING_OBJECT (ts_pad, "unsupported mpegversion %d", mpegversion);
|
|
goto not_negotiated;
|
|
}
|
|
} else if (strcmp (mt, "subpicture/x-dvb") == 0) {
|
|
st = TSMUX_ST_PS_DVB_SUBPICTURE;
|
|
} else if (strcmp (mt, "application/x-teletext") == 0) {
|
|
st = TSMUX_ST_PS_TELETEXT;
|
|
/* needs a particularly sized layout */
|
|
ts_pad->prepare_func = gst_base_ts_mux_prepare_teletext;
|
|
} else if (strcmp (mt, "audio/x-opus") == 0) {
|
|
guint8 channels, mapping_family, stream_count, coupled_count;
|
|
guint8 channel_mapping[256];
|
|
|
|
if (!gst_codec_utils_opus_parse_caps (caps, NULL, &channels,
|
|
&mapping_family, &stream_count, &coupled_count, channel_mapping)) {
|
|
GST_ERROR_OBJECT (ts_pad, "Incomplete Opus caps");
|
|
goto not_negotiated;
|
|
}
|
|
|
|
if (channels <= 2 && mapping_family == 0) {
|
|
opus_channel_config_code = channels;
|
|
} else if (channels == 2 && mapping_family == 255 && stream_count == 1
|
|
&& coupled_count == 1) {
|
|
/* Dual mono */
|
|
opus_channel_config_code = 0;
|
|
} else if (channels >= 2 && channels <= 8 && mapping_family == 1) {
|
|
static const guint8 coupled_stream_counts[9] = {
|
|
1, 0, 1, 1, 2, 2, 2, 3, 3
|
|
};
|
|
static const guint8 channel_map_a[8][8] = {
|
|
{0},
|
|
{0, 1},
|
|
{0, 2, 1},
|
|
{0, 1, 2, 3},
|
|
{0, 4, 1, 2, 3},
|
|
{0, 4, 1, 2, 3, 5},
|
|
{0, 4, 1, 2, 3, 5, 6},
|
|
{0, 6, 1, 2, 3, 4, 5, 7},
|
|
};
|
|
static const guint8 channel_map_b[8][8] = {
|
|
{0},
|
|
{0, 1},
|
|
{0, 1, 2},
|
|
{0, 1, 2, 3},
|
|
{0, 1, 2, 3, 4},
|
|
{0, 1, 2, 3, 4, 5},
|
|
{0, 1, 2, 3, 4, 5, 6},
|
|
{0, 1, 2, 3, 4, 5, 6, 7},
|
|
};
|
|
|
|
/* Vorbis mapping */
|
|
if (stream_count == channels - coupled_stream_counts[channels] &&
|
|
coupled_count == coupled_stream_counts[channels] &&
|
|
memcmp (channel_mapping, channel_map_a[channels - 1],
|
|
channels) == 0) {
|
|
opus_channel_config_code = channels;
|
|
} else if (stream_count == channels - coupled_stream_counts[channels] &&
|
|
coupled_count == coupled_stream_counts[channels] &&
|
|
memcmp (channel_mapping, channel_map_b[channels - 1],
|
|
channels) == 0) {
|
|
opus_channel_config_code = channels | 0x80;
|
|
} else {
|
|
GST_FIXME_OBJECT (ts_pad, "Opus channel mapping not handled");
|
|
goto not_negotiated;
|
|
}
|
|
}
|
|
|
|
st = TSMUX_ST_PS_OPUS;
|
|
ts_pad->prepare_func = gst_base_ts_mux_prepare_opus;
|
|
} else if (strcmp (mt, "meta/x-klv") == 0) {
|
|
st = TSMUX_ST_PS_KLV;
|
|
} else if (strcmp (mt, "image/x-jpc") == 0) {
|
|
/*
|
|
* See this document for more details on standard:
|
|
*
|
|
* https://www.itu.int/rec/T-REC-H.222.0-201206-S/en
|
|
* Annex S describes J2K details
|
|
* Page 104 of this document describes J2k video descriptor
|
|
*/
|
|
|
|
const GValue *vProfile = gst_structure_get_value (s, "profile");
|
|
const GValue *vMainlevel = gst_structure_get_value (s, "main-level");
|
|
const GValue *vFramerate = gst_structure_get_value (s, "framerate");
|
|
const GValue *vColorimetry = gst_structure_get_value (s, "colorimetry");
|
|
j2k_private_data *private_data;
|
|
|
|
/* for now, we relax the condition that profile must exist and equal
|
|
* GST_JPEG2000_PARSE_PROFILE_BC_SINGLE */
|
|
if (vProfile) {
|
|
profile = g_value_get_int (vProfile);
|
|
if (profile != GST_JPEG2000_PARSE_PROFILE_BC_SINGLE) {
|
|
GST_LOG_OBJECT (ts_pad, "Invalid JPEG 2000 profile %d", profile);
|
|
/* goto not_negotiated; */
|
|
}
|
|
}
|
|
/* for now, we will relax the condition that the main level must be present */
|
|
if (vMainlevel) {
|
|
main_level = g_value_get_uint (vMainlevel);
|
|
if (main_level > 11) {
|
|
GST_ERROR_OBJECT (ts_pad, "Invalid main level %d", main_level);
|
|
goto not_negotiated;
|
|
}
|
|
if (main_level >= 6) {
|
|
max_rate = 2 ^ (main_level - 6) * 1600 * 1000000;
|
|
} else {
|
|
switch (main_level) {
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
max_rate = 200 * 1000000;
|
|
break;
|
|
case 4:
|
|
max_rate = 400 * 1000000;
|
|
break;
|
|
case 5:
|
|
max_rate = 800 * 1000000;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
/* GST_ERROR_OBJECT (ts_pad, "Missing main level");
|
|
* goto not_negotiated; */
|
|
}
|
|
|
|
/* We always mux video in J2K-over-MPEG-TS non-interlaced mode */
|
|
private_data = g_new0 (j2k_private_data, 1);
|
|
private_data->interlace = FALSE;
|
|
private_data->den = 0;
|
|
private_data->num = 0;
|
|
private_data->max_bitrate = max_rate;
|
|
private_data->color_spec = 1;
|
|
/* these two fields are not used, since we always mux as non-interlaced */
|
|
private_data->Fic = 1;
|
|
private_data->Fio = 0;
|
|
|
|
/* Get Framerate */
|
|
if (vFramerate != NULL) {
|
|
/* Data for ELSM header */
|
|
private_data->num = gst_value_get_fraction_numerator (vFramerate);
|
|
private_data->den = gst_value_get_fraction_denominator (vFramerate);
|
|
}
|
|
/* Get Colorimetry */
|
|
if (vColorimetry) {
|
|
const char *colorimetry = g_value_get_string (vColorimetry);
|
|
color_spec = GST_MPEGTS_JPEG2000_COLORSPEC_SRGB; /* RGB as default */
|
|
if (g_str_equal (colorimetry, GST_VIDEO_COLORIMETRY_BT601)) {
|
|
color_spec = GST_MPEGTS_JPEG2000_COLORSPEC_REC601;
|
|
} else {
|
|
if (g_str_equal (colorimetry, GST_VIDEO_COLORIMETRY_BT709)
|
|
|| g_str_equal (colorimetry, GST_VIDEO_COLORIMETRY_SMPTE240M)) {
|
|
color_spec = GST_MPEGTS_JPEG2000_COLORSPEC_REC709;
|
|
}
|
|
}
|
|
private_data->color_spec = color_spec;
|
|
} else {
|
|
GST_ERROR_OBJECT (ts_pad, "Colorimetry not present in caps");
|
|
g_free (private_data);
|
|
goto not_negotiated;
|
|
}
|
|
st = TSMUX_ST_VIDEO_JP2K;
|
|
ts_pad->prepare_func = gst_base_ts_mux_prepare_jpeg2000;
|
|
ts_pad->prepare_data = private_data;
|
|
ts_pad->free_func = gst_base_ts_mux_free_jpeg2000;
|
|
} else {
|
|
GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux);
|
|
|
|
if (klass->handle_media_type) {
|
|
st = klass->handle_media_type (mux, mt, ts_pad);
|
|
}
|
|
}
|
|
|
|
if (st == TSMUX_ST_RESERVED) {
|
|
GST_ERROR_OBJECT (ts_pad, "Failed to determine stream type");
|
|
goto error;
|
|
}
|
|
|
|
if (ts_pad->stream && st != ts_pad->stream->stream_type) {
|
|
GST_ELEMENT_ERROR (mux, STREAM, MUX,
|
|
("Stream type change from %02x to %02x not supported",
|
|
ts_pad->stream->stream_type, st), NULL);
|
|
goto error;
|
|
}
|
|
|
|
if (ts_pad->stream == NULL) {
|
|
ts_pad->stream =
|
|
tsmux_create_stream (mux->tsmux, st, ts_pad->pid, ts_pad->language);
|
|
if (ts_pad->stream == NULL)
|
|
goto error;
|
|
}
|
|
|
|
pmt_name = g_strdup_printf ("PMT_%d", ts_pad->pid);
|
|
if (mux->prog_map && gst_structure_has_field (mux->prog_map, pmt_name)) {
|
|
gst_structure_get_int (mux->prog_map, pmt_name, &ts_pad->stream->pmt_index);
|
|
}
|
|
g_free (pmt_name);
|
|
|
|
interlace_mode = gst_structure_get_string (s, "interlace-mode");
|
|
gst_structure_get_int (s, "rate", &ts_pad->stream->audio_sampling);
|
|
gst_structure_get_int (s, "channels", &ts_pad->stream->audio_channels);
|
|
gst_structure_get_int (s, "bitrate", &ts_pad->stream->audio_bitrate);
|
|
|
|
/* frame rate */
|
|
gst_structure_get_fraction (s, "framerate", &ts_pad->stream->num,
|
|
&ts_pad->stream->den);
|
|
|
|
/* Interlace mode */
|
|
ts_pad->stream->interlace_mode = FALSE;
|
|
if (interlace_mode) {
|
|
ts_pad->stream->interlace_mode =
|
|
g_str_equal (interlace_mode, "interleaved");
|
|
}
|
|
|
|
/* Width and Height */
|
|
gst_structure_get_int (s, "width", &ts_pad->stream->horizontal_size);
|
|
gst_structure_get_int (s, "height", &ts_pad->stream->vertical_size);
|
|
|
|
ts_pad->stream->color_spec = color_spec;
|
|
ts_pad->stream->max_bitrate = max_rate;
|
|
ts_pad->stream->profile_and_level = profile | main_level;
|
|
|
|
ts_pad->stream->opus_channel_config_code = opus_channel_config_code;
|
|
|
|
tsmux_stream_set_buffer_release_func (ts_pad->stream, release_buffer_cb);
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
/* ERRORS */
|
|
not_negotiated:
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
|
|
error:
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
static gboolean
|
|
is_valid_pmt_pid (guint16 pmt_pid)
|
|
{
|
|
if (pmt_pid < 0x0010 || pmt_pid > 0x1ffe)
|
|
return FALSE;
|
|
return TRUE;
|
|
}
|
|
|
|
/* Must be called with mux->lock held */
|
|
static GstFlowReturn
|
|
gst_base_ts_mux_create_stream (GstBaseTsMux * mux, GstBaseTsMuxPad * ts_pad)
|
|
{
|
|
GstCaps *caps = gst_pad_get_current_caps (GST_PAD (ts_pad));
|
|
GstFlowReturn ret;
|
|
|
|
if (caps == NULL) {
|
|
GST_DEBUG_OBJECT (ts_pad, "Sink pad caps were not set before pushing");
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
|
|
ret = gst_base_ts_mux_create_or_update_stream (mux, ts_pad, caps);
|
|
gst_caps_unref (caps);
|
|
|
|
if (ret == GST_FLOW_OK) {
|
|
tsmux_program_add_stream (ts_pad->prog, ts_pad->stream);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Must be called with mux->lock held */
|
|
static GstFlowReturn
|
|
gst_base_ts_mux_create_pad_stream (GstBaseTsMux * mux, GstPad * pad)
|
|
{
|
|
GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (pad);
|
|
gchar *name = NULL;
|
|
gchar *prop_name;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
if (ts_pad->prog_id == -1) {
|
|
name = GST_PAD_NAME (pad);
|
|
if (mux->prog_map != NULL && gst_structure_has_field (mux->prog_map, name)) {
|
|
gint idx;
|
|
gboolean ret = gst_structure_get_int (mux->prog_map, name, &idx);
|
|
if (!ret) {
|
|
GST_ELEMENT_ERROR (mux, STREAM, MUX,
|
|
("Reading program map failed. Assuming default"), (NULL));
|
|
idx = DEFAULT_PROG_ID;
|
|
}
|
|
if (idx < 0) {
|
|
GST_DEBUG_OBJECT (mux, "Program number %d associate with pad %s less "
|
|
"than zero; DEFAULT_PROGRAM = %d is used instead",
|
|
idx, name, DEFAULT_PROG_ID);
|
|
idx = DEFAULT_PROG_ID;
|
|
}
|
|
ts_pad->prog_id = idx;
|
|
} else {
|
|
ts_pad->prog_id = DEFAULT_PROG_ID;
|
|
}
|
|
}
|
|
|
|
ts_pad->prog =
|
|
(TsMuxProgram *) g_hash_table_lookup (mux->programs,
|
|
GINT_TO_POINTER (ts_pad->prog_id));
|
|
if (ts_pad->prog == NULL) {
|
|
ts_pad->prog = tsmux_program_new (mux->tsmux, ts_pad->prog_id);
|
|
if (ts_pad->prog == NULL)
|
|
goto no_program;
|
|
tsmux_set_pmt_interval (ts_pad->prog, mux->pmt_interval);
|
|
tsmux_program_set_scte35_pid (ts_pad->prog, mux->scte35_pid);
|
|
tsmux_program_set_scte35_interval (ts_pad->prog, mux->scte35_null_interval);
|
|
g_hash_table_insert (mux->programs, GINT_TO_POINTER (ts_pad->prog_id),
|
|
ts_pad->prog);
|
|
|
|
/* Check for user-specified PMT PID */
|
|
prop_name = g_strdup_printf ("PMT_%d", ts_pad->prog->pgm_number);
|
|
if (mux->prog_map && gst_structure_has_field (mux->prog_map, prop_name)) {
|
|
guint pmt_pid;
|
|
|
|
if (gst_structure_get_uint (mux->prog_map, prop_name, &pmt_pid)) {
|
|
if (is_valid_pmt_pid (pmt_pid)) {
|
|
GST_DEBUG_OBJECT (mux, "User specified pid=%u as PMT for "
|
|
"program (prog_id = %d)", pmt_pid, ts_pad->prog->pgm_number);
|
|
tsmux_program_set_pmt_pid (ts_pad->prog, pmt_pid);
|
|
} else {
|
|
GST_ELEMENT_WARNING (mux, LIBRARY, SETTINGS,
|
|
("User specified PMT pid %u for program %d is not valid.",
|
|
pmt_pid, ts_pad->prog->pgm_number), (NULL));
|
|
}
|
|
}
|
|
}
|
|
g_free (prop_name);
|
|
}
|
|
|
|
if (ts_pad->stream == NULL) {
|
|
ret = gst_base_ts_mux_create_stream (mux, ts_pad);
|
|
if (ret != GST_FLOW_OK)
|
|
goto no_stream;
|
|
}
|
|
|
|
if (ts_pad->prog->pcr_stream == NULL) {
|
|
/* Take the first stream of the program for the PCR */
|
|
GST_DEBUG_OBJECT (ts_pad,
|
|
"Use stream (pid=%d) from pad as PCR for program (prog_id = %d)",
|
|
ts_pad->pid, ts_pad->prog_id);
|
|
|
|
tsmux_program_set_pcr_stream (ts_pad->prog, ts_pad->stream);
|
|
}
|
|
|
|
/* Check for user-specified PCR PID */
|
|
prop_name = g_strdup_printf ("PCR_%d", ts_pad->prog->pgm_number);
|
|
if (mux->prog_map && gst_structure_has_field (mux->prog_map, prop_name)) {
|
|
const gchar *sink_name =
|
|
gst_structure_get_string (mux->prog_map, prop_name);
|
|
|
|
if (!g_strcmp0 (name, sink_name)) {
|
|
GST_DEBUG_OBJECT (mux, "User specified stream (pid=%d) as PCR for "
|
|
"program (prog_id = %d)", ts_pad->pid, ts_pad->prog->pgm_number);
|
|
tsmux_program_set_pcr_stream (ts_pad->prog, ts_pad->stream);
|
|
}
|
|
}
|
|
g_free (prop_name);
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
no_program:
|
|
{
|
|
GST_ELEMENT_ERROR (mux, STREAM, MUX,
|
|
("Could not create new program"), (NULL));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
no_stream:
|
|
{
|
|
GST_ELEMENT_ERROR (mux, STREAM, MUX,
|
|
("Could not create handler for stream"), (NULL));
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* Must be called with mux->lock held */
|
|
static gboolean
|
|
gst_base_ts_mux_create_pad_stream_func (GstElement * element, GstPad * pad,
|
|
gpointer user_data)
|
|
{
|
|
GstFlowReturn *ret = user_data;
|
|
|
|
*ret = gst_base_ts_mux_create_pad_stream (GST_BASE_TS_MUX (element), pad);
|
|
|
|
return *ret == GST_FLOW_OK;
|
|
}
|
|
|
|
/* Must be called with mux->lock held */
|
|
static GstFlowReturn
|
|
gst_base_ts_mux_create_streams (GstBaseTsMux * mux)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
gst_element_foreach_sink_pad (GST_ELEMENT_CAST (mux),
|
|
gst_base_ts_mux_create_pad_stream_func, &ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
new_packet_common_init (GstBaseTsMux * mux, GstBuffer * buf, guint8 * data,
|
|
guint len)
|
|
{
|
|
/* Packets should be at least 188 bytes, but check anyway */
|
|
g_assert (len >= 2 || !data);
|
|
|
|
if (!mux->streamheader_sent && data) {
|
|
guint pid = ((data[1] & 0x1f) << 8) | data[2];
|
|
/* if it's a PAT or a PMT */
|
|
if (pid == 0x00 || (pid >= TSMUX_START_PMT_PID && pid < TSMUX_START_ES_PID)) {
|
|
GstBuffer *hbuf;
|
|
|
|
if (!buf) {
|
|
hbuf = gst_buffer_new_and_alloc (len);
|
|
gst_buffer_fill (hbuf, 0, data, len);
|
|
} else {
|
|
hbuf = gst_buffer_copy (buf);
|
|
}
|
|
GST_LOG_OBJECT (mux,
|
|
"Collecting packet with pid 0x%04x into streamheaders", pid);
|
|
|
|
g_queue_push_tail (&mux->streamheader, hbuf);
|
|
} else if (!g_queue_is_empty (&mux->streamheader)) {
|
|
gst_base_ts_mux_set_header_on_caps (mux);
|
|
mux->streamheader_sent = TRUE;
|
|
}
|
|
}
|
|
|
|
if (buf) {
|
|
if (mux->is_header) {
|
|
GST_LOG_OBJECT (mux, "marking as header buffer");
|
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_HEADER);
|
|
}
|
|
if (mux->is_delta) {
|
|
GST_LOG_OBJECT (mux, "marking as delta unit");
|
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
} else {
|
|
GST_DEBUG_OBJECT (mux, "marking as non-delta unit");
|
|
mux->is_delta = TRUE;
|
|
}
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_base_ts_mux_push_packets (GstBaseTsMux * mux, gboolean force)
|
|
{
|
|
GstBufferList *buffer_list;
|
|
gint align = mux->alignment;
|
|
gint av, packet_size;
|
|
|
|
packet_size = mux->packet_size;
|
|
|
|
if (align < 0)
|
|
align = mux->automatic_alignment;
|
|
|
|
av = gst_adapter_available (mux->out_adapter);
|
|
GST_LOG_OBJECT (mux, "align %d, av %d", align, av);
|
|
|
|
if (av == 0)
|
|
return GST_FLOW_OK;
|
|
|
|
/* no alignment, just push all available data */
|
|
if (align == 0) {
|
|
buffer_list = gst_adapter_take_buffer_list (mux->out_adapter, av);
|
|
return gst_aggregator_finish_buffer_list (GST_AGGREGATOR (mux),
|
|
buffer_list);
|
|
}
|
|
|
|
align *= packet_size;
|
|
|
|
if (!force && align > av)
|
|
return GST_FLOW_OK;
|
|
|
|
buffer_list = gst_buffer_list_new_sized ((av / align) + 1);
|
|
|
|
GST_LOG_OBJECT (mux, "aligning to %d bytes", align);
|
|
while (align <= av) {
|
|
GstBuffer *buf;
|
|
GstClockTime pts;
|
|
|
|
pts = gst_adapter_prev_pts (mux->out_adapter, NULL);
|
|
buf = gst_adapter_take_buffer (mux->out_adapter, align);
|
|
|
|
GST_BUFFER_PTS (buf) = pts;
|
|
|
|
gst_buffer_list_add (buffer_list, buf);
|
|
av -= align;
|
|
}
|
|
|
|
if (av > 0 && force) {
|
|
GstBuffer *buf;
|
|
GstClockTime pts;
|
|
guint8 *data;
|
|
guint32 header;
|
|
gint dummy;
|
|
GstMapInfo map;
|
|
|
|
GST_LOG_OBJECT (mux, "handling %d leftover bytes", av);
|
|
|
|
pts = gst_adapter_prev_pts (mux->out_adapter, NULL);
|
|
buf = gst_buffer_new_and_alloc (align);
|
|
|
|
GST_BUFFER_PTS (buf) = pts;
|
|
|
|
gst_buffer_map (buf, &map, GST_MAP_READ);
|
|
data = map.data;
|
|
|
|
gst_adapter_copy (mux->out_adapter, data, 0, av);
|
|
gst_adapter_clear (mux->out_adapter);
|
|
|
|
data += av;
|
|
header = GST_READ_UINT32_BE (data - packet_size);
|
|
|
|
dummy = (map.size - av) / packet_size;
|
|
GST_LOG_OBJECT (mux, "adding %d null packets", dummy);
|
|
|
|
for (; dummy > 0; dummy--) {
|
|
gint offset;
|
|
|
|
if (packet_size > GST_BASE_TS_MUX_NORMAL_PACKET_LENGTH) {
|
|
GST_WRITE_UINT32_BE (data, header);
|
|
/* simply increase header a bit and never mind too much */
|
|
header++;
|
|
offset = 4;
|
|
} else {
|
|
offset = 0;
|
|
}
|
|
GST_WRITE_UINT8 (data + offset, TSMUX_SYNC_BYTE);
|
|
/* null packet PID */
|
|
GST_WRITE_UINT16_BE (data + offset + 1, 0x1FFF);
|
|
/* no adaptation field exists | continuity counter undefined */
|
|
GST_WRITE_UINT8 (data + offset + 3, 0x10);
|
|
/* payload */
|
|
memset (data + offset + 4, 0, GST_BASE_TS_MUX_NORMAL_PACKET_LENGTH - 4);
|
|
data += packet_size;
|
|
}
|
|
|
|
gst_buffer_unmap (buf, &map);
|
|
gst_buffer_list_add (buffer_list, buf);
|
|
}
|
|
|
|
return gst_aggregator_finish_buffer_list (GST_AGGREGATOR (mux), buffer_list);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_base_ts_mux_collect_packet (GstBaseTsMux * mux, GstBuffer * buf)
|
|
{
|
|
GST_LOG_OBJECT (mux, "collecting packet size %" G_GSIZE_FORMAT,
|
|
gst_buffer_get_size (buf));
|
|
gst_adapter_push (mux->out_adapter, buf);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstEvent *
|
|
check_pending_key_unit_event (GstEvent * pending_event, GstSegment * segment,
|
|
GstClockTime timestamp, guint flags, GstClockTime pending_key_unit_ts)
|
|
{
|
|
GstClockTime running_time, stream_time;
|
|
gboolean all_headers;
|
|
guint count;
|
|
GstEvent *event = NULL;
|
|
|
|
g_assert (segment != NULL);
|
|
|
|
if (pending_event == NULL)
|
|
goto out;
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (pending_key_unit_ts) &&
|
|
timestamp == GST_CLOCK_TIME_NONE)
|
|
goto out;
|
|
|
|
running_time = timestamp;
|
|
|
|
GST_INFO ("now %" GST_TIME_FORMAT " wanted %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (running_time), GST_TIME_ARGS (pending_key_unit_ts));
|
|
if (GST_CLOCK_TIME_IS_VALID (pending_key_unit_ts) &&
|
|
running_time < pending_key_unit_ts)
|
|
goto out;
|
|
|
|
if (flags & GST_BUFFER_FLAG_DELTA_UNIT) {
|
|
GST_INFO ("pending force key unit, waiting for keyframe");
|
|
goto out;
|
|
}
|
|
|
|
stream_time = gst_segment_to_stream_time (segment,
|
|
GST_FORMAT_TIME, timestamp);
|
|
|
|
if (GST_EVENT_TYPE (pending_event) == GST_EVENT_CUSTOM_DOWNSTREAM) {
|
|
gst_video_event_parse_downstream_force_key_unit (pending_event,
|
|
NULL, NULL, NULL, &all_headers, &count);
|
|
} else {
|
|
gst_video_event_parse_upstream_force_key_unit (pending_event, NULL,
|
|
&all_headers, &count);
|
|
}
|
|
|
|
event =
|
|
gst_video_event_new_downstream_force_key_unit (timestamp, stream_time,
|
|
running_time, all_headers, count);
|
|
gst_event_set_seqnum (event, gst_event_get_seqnum (pending_event));
|
|
|
|
out:
|
|
return event;
|
|
}
|
|
|
|
/* Called when the TsMux has prepared a packet for output. Return FALSE
|
|
* on error */
|
|
static gboolean
|
|
new_packet_cb (GstBuffer * buf, void *user_data, gint64 new_pcr)
|
|
{
|
|
GstBaseTsMux *mux = (GstBaseTsMux *) user_data;
|
|
GstAggregator *agg = GST_AGGREGATOR (mux);
|
|
GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux);
|
|
GstMapInfo map;
|
|
GstSegment *agg_segment = &GST_AGGREGATOR_PAD (agg->srcpad)->segment;
|
|
|
|
g_assert (klass->output_packet);
|
|
|
|
gst_buffer_map (buf, &map, GST_MAP_READWRITE);
|
|
|
|
if (!GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) {
|
|
/* tsmux isn't generating timestamps. Use the input times */
|
|
GST_BUFFER_PTS (buf) = mux->last_ts;
|
|
}
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) {
|
|
if (!GST_CLOCK_STIME_IS_VALID (mux->output_ts_offset)) {
|
|
GstClockTime output_start_time = agg_segment->position;
|
|
if (agg_segment->position == -1
|
|
|| agg_segment->position < agg_segment->start) {
|
|
output_start_time = agg_segment->start;
|
|
}
|
|
|
|
mux->output_ts_offset =
|
|
GST_CLOCK_DIFF (GST_BUFFER_PTS (buf), output_start_time);
|
|
|
|
GST_DEBUG_OBJECT (mux, "New output ts offset %" GST_STIME_FORMAT,
|
|
GST_STIME_ARGS (mux->output_ts_offset));
|
|
}
|
|
|
|
GST_BUFFER_PTS (buf) += mux->output_ts_offset;
|
|
|
|
agg_segment->position = GST_BUFFER_PTS (buf);
|
|
} else if (agg_segment->position == -1
|
|
|| agg_segment->position < agg_segment->start) {
|
|
GST_BUFFER_PTS (buf) = agg_segment->start;
|
|
} else {
|
|
GST_BUFFER_PTS (buf) = agg_segment->position;
|
|
}
|
|
|
|
/* do common init (flags and streamheaders) */
|
|
new_packet_common_init (mux, buf, map.data, map.size);
|
|
|
|
gst_buffer_unmap (buf, &map);
|
|
|
|
return klass->output_packet (mux, buf, new_pcr);
|
|
}
|
|
|
|
/* called when TsMux needs new packet to write into */
|
|
static void
|
|
alloc_packet_cb (GstBuffer ** buf, void *user_data)
|
|
{
|
|
GstBaseTsMux *mux = (GstBaseTsMux *) user_data;
|
|
GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux);
|
|
|
|
g_assert (klass->allocate_packet);
|
|
|
|
klass->allocate_packet (mux, buf);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_base_ts_mux_aggregate_buffer (GstBaseTsMux * mux,
|
|
GstAggregatorPad * agg_pad, GstBuffer * buf)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstBaseTsMuxPad *best = GST_BASE_TS_MUX_PAD (agg_pad);
|
|
TsMuxProgram *prog;
|
|
gint64 pts = GST_CLOCK_STIME_NONE;
|
|
gint64 dts = GST_CLOCK_STIME_NONE;
|
|
gboolean delta = TRUE, header = FALSE;
|
|
StreamData *stream_data;
|
|
GstMpegtsSection *scte_section = NULL;
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pads collected");
|
|
|
|
if (buf && gst_buffer_get_size (buf) == 0
|
|
&& GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_GAP)) {
|
|
gst_buffer_unref (buf);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
if (G_UNLIKELY (mux->first)) {
|
|
ret = gst_base_ts_mux_create_streams (mux);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK)) {
|
|
if (buf)
|
|
gst_buffer_unref (buf);
|
|
g_mutex_unlock (&mux->lock);
|
|
return ret;
|
|
}
|
|
|
|
mux->first = FALSE;
|
|
}
|
|
|
|
prog = best->prog;
|
|
if (prog == NULL) {
|
|
GList *cur;
|
|
|
|
gst_base_ts_mux_create_pad_stream (mux, GST_PAD (best));
|
|
tsmux_resend_pat (mux->tsmux);
|
|
tsmux_resend_si (mux->tsmux);
|
|
prog = best->prog;
|
|
g_assert_nonnull (prog);
|
|
|
|
/* output PMT for each program */
|
|
for (cur = mux->tsmux->programs; cur; cur = cur->next) {
|
|
TsMuxProgram *program = (TsMuxProgram *) cur->data;
|
|
|
|
tsmux_resend_pmt (program);
|
|
}
|
|
}
|
|
|
|
g_assert (buf != NULL);
|
|
|
|
if (best->prepare_func) {
|
|
GstBuffer *tmp;
|
|
|
|
tmp = best->prepare_func (buf, best, mux);
|
|
g_assert (tmp);
|
|
gst_buffer_unref (buf);
|
|
buf = tmp;
|
|
}
|
|
|
|
if (mux->force_key_unit_event != NULL && best->stream->is_video_stream) {
|
|
GstEvent *event;
|
|
|
|
g_mutex_unlock (&mux->lock);
|
|
event = check_pending_key_unit_event (mux->force_key_unit_event,
|
|
&agg_pad->segment, GST_BUFFER_PTS (buf),
|
|
GST_BUFFER_FLAGS (buf), mux->pending_key_unit_ts);
|
|
if (event) {
|
|
GstClockTime running_time;
|
|
guint count;
|
|
GList *cur;
|
|
|
|
mux->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
|
|
gst_event_replace (&mux->force_key_unit_event, NULL);
|
|
|
|
gst_video_event_parse_downstream_force_key_unit (event,
|
|
NULL, NULL, &running_time, NULL, &count);
|
|
|
|
GST_INFO_OBJECT (mux, "pushing downstream force-key-unit event %d "
|
|
"%" GST_TIME_FORMAT " count %d", gst_event_get_seqnum (event),
|
|
GST_TIME_ARGS (running_time), count);
|
|
gst_pad_push_event (GST_AGGREGATOR_SRC_PAD (mux), event);
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
/* output PAT, SI tables */
|
|
tsmux_resend_pat (mux->tsmux);
|
|
tsmux_resend_si (mux->tsmux);
|
|
|
|
/* output PMT for each program */
|
|
for (cur = mux->tsmux->programs; cur; cur = cur->next) {
|
|
TsMuxProgram *program = (TsMuxProgram *) cur->data;
|
|
|
|
tsmux_resend_pmt (program);
|
|
}
|
|
} else {
|
|
g_mutex_lock (&mux->lock);
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (prog->pcr_stream == NULL)) {
|
|
/* Take the first data stream for the PCR */
|
|
GST_DEBUG_OBJECT (best,
|
|
"Use stream (pid=%d) from pad as PCR for program (prog_id = %d)",
|
|
best->pid, best->prog_id);
|
|
|
|
/* Set the chosen PCR stream */
|
|
tsmux_program_set_pcr_stream (prog, best->stream);
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (best, "Chose stream for output (PID: 0x%04x)", best->pid);
|
|
|
|
GST_OBJECT_LOCK (mux);
|
|
scte_section = mux->pending_scte35_section;
|
|
mux->pending_scte35_section = NULL;
|
|
GST_OBJECT_UNLOCK (mux);
|
|
if (G_UNLIKELY (scte_section)) {
|
|
GST_DEBUG_OBJECT (mux, "Sending pending SCTE section");
|
|
if (!tsmux_send_section (mux->tsmux, scte_section))
|
|
GST_ERROR_OBJECT (mux, "Error sending SCTE section !");
|
|
}
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (GST_BUFFER_PTS (buf))) {
|
|
pts = GSTTIME_TO_MPEGTIME (GST_BUFFER_PTS (buf));
|
|
GST_DEBUG_OBJECT (mux, "Buffer has PTS %" GST_TIME_FORMAT " pts %"
|
|
G_GINT64_FORMAT "%s", GST_TIME_ARGS (GST_BUFFER_PTS (buf)), pts,
|
|
!GST_BUFFER_FLAG_IS_SET (buf,
|
|
GST_BUFFER_FLAG_DELTA_UNIT) ? " (keyframe)" : "");
|
|
}
|
|
|
|
if (GST_CLOCK_STIME_IS_VALID (best->dts)) {
|
|
dts = GSTTIME_TO_MPEGTIME (best->dts);
|
|
GST_DEBUG_OBJECT (mux, "Buffer has DTS %" GST_STIME_FORMAT " dts %"
|
|
G_GINT64_FORMAT, GST_STIME_ARGS (best->dts), dts);
|
|
}
|
|
|
|
/* should not have a DTS without PTS */
|
|
if (!GST_CLOCK_STIME_IS_VALID (pts) && GST_CLOCK_STIME_IS_VALID (dts)) {
|
|
GST_DEBUG_OBJECT (mux, "using DTS for unknown PTS");
|
|
pts = dts;
|
|
}
|
|
|
|
if (best->stream->is_video_stream) {
|
|
delta = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
header = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_HEADER);
|
|
}
|
|
|
|
if (best->stream->is_meta && gst_buffer_get_size (buf) > (G_MAXUINT16 - 3)) {
|
|
GST_WARNING_OBJECT (mux, "KLV meta unit too big, splitting not supported");
|
|
|
|
gst_buffer_unref (buf);
|
|
g_mutex_unlock (&mux->lock);
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (mux, "delta: %d", delta);
|
|
|
|
if (gst_buffer_get_size (buf) > 0) {
|
|
stream_data = stream_data_new (buf);
|
|
tsmux_stream_add_data (best->stream, stream_data->map_info.data,
|
|
stream_data->map_info.size, stream_data, pts, dts, !delta);
|
|
}
|
|
|
|
/* outgoing ts follows ts of PCR program stream */
|
|
if (prog->pcr_stream == best->stream) {
|
|
/* prefer DTS if present for PCR as it should be monotone */
|
|
mux->last_ts =
|
|
GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DTS (buf)) ?
|
|
GST_BUFFER_DTS (buf) : GST_BUFFER_PTS (buf);
|
|
}
|
|
|
|
mux->is_delta = delta;
|
|
mux->is_header = header;
|
|
while (tsmux_stream_bytes_in_buffer (best->stream) > 0) {
|
|
if (!tsmux_write_stream_packet (mux->tsmux, best->stream)) {
|
|
/* Failed writing data for some reason. Set appropriate error */
|
|
GST_DEBUG_OBJECT (mux, "Failed to write data packet");
|
|
GST_ELEMENT_ERROR (mux, STREAM, MUX,
|
|
("Failed writing output data to stream %04x", best->stream->id),
|
|
(NULL));
|
|
goto write_fail;
|
|
}
|
|
}
|
|
g_mutex_unlock (&mux->lock);
|
|
/* flush packet cache */
|
|
return gst_base_ts_mux_push_packets (mux, FALSE);
|
|
|
|
/* ERRORS */
|
|
write_fail:
|
|
{
|
|
return mux->last_flow_ret;
|
|
}
|
|
}
|
|
|
|
/* GstElement implementation */
|
|
static gboolean
|
|
gst_base_ts_mux_has_pad_with_pid (GstBaseTsMux * mux, guint16 pid)
|
|
{
|
|
GList *l;
|
|
gboolean res = FALSE;
|
|
|
|
GST_OBJECT_LOCK (mux);
|
|
|
|
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
|
|
GstBaseTsMuxPad *tpad = GST_BASE_TS_MUX_PAD (l->data);
|
|
|
|
if (tpad->pid == pid) {
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (mux);
|
|
return res;
|
|
}
|
|
|
|
static GstPad *
|
|
gst_base_ts_mux_request_new_pad (GstElement * element, GstPadTemplate * templ,
|
|
const gchar * name, const GstCaps * caps)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (element);
|
|
gint pid = -1;
|
|
GstPad *pad = NULL;
|
|
gchar *free_name = NULL;
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
if (name != NULL && sscanf (name, "sink_%d", &pid) == 1) {
|
|
if (tsmux_find_stream (mux->tsmux, pid)) {
|
|
g_mutex_unlock (&mux->lock);
|
|
goto stream_exists;
|
|
}
|
|
/* Make sure we don't use reserved PID.
|
|
* FIXME : This should be extended to other variants (ex: ATSC) reserved PID */
|
|
if (pid < TSMUX_START_ES_PID)
|
|
goto invalid_stream_pid;
|
|
} else {
|
|
do {
|
|
pid = tsmux_get_new_pid (mux->tsmux);
|
|
} while (gst_base_ts_mux_has_pad_with_pid (mux, pid));
|
|
|
|
/* Name the pad correctly after the selected pid */
|
|
name = free_name = g_strdup_printf ("sink_%d", pid);
|
|
}
|
|
g_mutex_unlock (&mux->lock);
|
|
|
|
pad = (GstPad *)
|
|
GST_ELEMENT_CLASS (parent_class)->request_new_pad (element,
|
|
templ, name, caps);
|
|
|
|
gst_base_ts_mux_pad_reset (GST_BASE_TS_MUX_PAD (pad));
|
|
GST_BASE_TS_MUX_PAD (pad)->pid = pid;
|
|
|
|
g_free (free_name);
|
|
|
|
return pad;
|
|
|
|
/* ERRORS */
|
|
stream_exists:
|
|
{
|
|
GST_ELEMENT_ERROR (element, STREAM, MUX, ("Duplicate PID requested"),
|
|
(NULL));
|
|
return NULL;
|
|
}
|
|
|
|
invalid_stream_pid:
|
|
{
|
|
GST_ELEMENT_ERROR (element, STREAM, MUX,
|
|
("Invalid Elementary stream PID (0x%02u < 0x40)", pid), (NULL));
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (element);
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
if (mux->tsmux) {
|
|
GList *cur;
|
|
GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (pad);
|
|
gint pid = ts_pad->pid;
|
|
|
|
if (ts_pad->prog) {
|
|
if (ts_pad->prog->pcr_stream == ts_pad->stream) {
|
|
tsmux_program_set_pcr_stream (ts_pad->prog, NULL);
|
|
}
|
|
if (tsmux_remove_stream (mux->tsmux, pid, ts_pad->prog)) {
|
|
g_hash_table_remove (mux->programs, GINT_TO_POINTER (ts_pad->prog_id));
|
|
}
|
|
}
|
|
|
|
tsmux_resend_pat (mux->tsmux);
|
|
tsmux_resend_si (mux->tsmux);
|
|
|
|
/* output PMT for each program */
|
|
for (cur = mux->tsmux->programs; cur; cur = cur->next) {
|
|
TsMuxProgram *program = (TsMuxProgram *) cur->data;
|
|
|
|
tsmux_resend_pmt (program);
|
|
}
|
|
}
|
|
g_mutex_unlock (&mux->lock);
|
|
|
|
GST_ELEMENT_CLASS (parent_class)->release_pad (element, pad);
|
|
}
|
|
|
|
/* GstAggregator implementation */
|
|
|
|
static void
|
|
request_keyframe (GstBaseTsMux * mux, GstClockTime running_time)
|
|
{
|
|
GList *l;
|
|
GST_OBJECT_LOCK (mux);
|
|
|
|
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
|
|
gst_pad_push_event (GST_PAD (l->data),
|
|
gst_video_event_new_upstream_force_key_unit (running_time, TRUE, 0));
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (mux);
|
|
}
|
|
|
|
static const guint32 crc_tab[256] = {
|
|
0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9, 0x130476dc, 0x17c56b6b,
|
|
0x1a864db2, 0x1e475005, 0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
|
|
0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd, 0x4c11db70, 0x48d0c6c7,
|
|
0x4593e01e, 0x4152fda9, 0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
|
|
0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011, 0x791d4014, 0x7ddc5da3,
|
|
0x709f7b7a, 0x745e66cd, 0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
|
|
0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5, 0xbe2b5b58, 0xbaea46ef,
|
|
0xb7a96036, 0xb3687d81, 0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
|
|
0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49, 0xc7361b4c, 0xc3f706fb,
|
|
0xceb42022, 0xca753d95, 0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
|
|
0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d, 0x34867077, 0x30476dc0,
|
|
0x3d044b19, 0x39c556ae, 0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
|
|
0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16, 0x018aeb13, 0x054bf6a4,
|
|
0x0808d07d, 0x0cc9cdca, 0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
|
|
0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02, 0x5e9f46bf, 0x5a5e5b08,
|
|
0x571d7dd1, 0x53dc6066, 0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
|
|
0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e, 0xbfa1b04b, 0xbb60adfc,
|
|
0xb6238b25, 0xb2e29692, 0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
|
|
0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a, 0xe0b41de7, 0xe4750050,
|
|
0xe9362689, 0xedf73b3e, 0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
|
|
0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686, 0xd5b88683, 0xd1799b34,
|
|
0xdc3abded, 0xd8fba05a, 0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
|
|
0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb, 0x4f040d56, 0x4bc510e1,
|
|
0x46863638, 0x42472b8f, 0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
|
|
0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47, 0x36194d42, 0x32d850f5,
|
|
0x3f9b762c, 0x3b5a6b9b, 0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
|
|
0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623, 0xf12f560e, 0xf5ee4bb9,
|
|
0xf8ad6d60, 0xfc6c70d7, 0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
|
|
0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f, 0xc423cd6a, 0xc0e2d0dd,
|
|
0xcda1f604, 0xc960ebb3, 0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
|
|
0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b, 0x9b3660c6, 0x9ff77d71,
|
|
0x92b45ba8, 0x9675461f, 0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
|
|
0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640, 0x4e8ee645, 0x4a4ffbf2,
|
|
0x470cdd2b, 0x43cdc09c, 0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
|
|
0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24, 0x119b4be9, 0x155a565e,
|
|
0x18197087, 0x1cd86d30, 0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
|
|
0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088, 0x2497d08d, 0x2056cd3a,
|
|
0x2d15ebe3, 0x29d4f654, 0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
|
|
0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c, 0xe3a1cbc1, 0xe760d676,
|
|
0xea23f0af, 0xeee2ed18, 0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
|
|
0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0, 0x9abc8bd5, 0x9e7d9662,
|
|
0x933eb0bb, 0x97ffad0c, 0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
|
|
0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
|
|
};
|
|
|
|
static guint32
|
|
_calc_crc32 (const guint8 * data, guint datalen)
|
|
{
|
|
gint i;
|
|
guint32 crc = 0xffffffff;
|
|
|
|
for (i = 0; i < datalen; i++) {
|
|
crc = (crc << 8) ^ crc_tab[((crc >> 24) ^ *data++) & 0xff];
|
|
}
|
|
return crc;
|
|
}
|
|
|
|
#define MPEGTIME_TO_GSTTIME(t) ((t) * (guint64)100000 / 9)
|
|
|
|
static GstMpegtsSCTESpliceEvent *
|
|
copy_splice (GstMpegtsSCTESpliceEvent * splice)
|
|
{
|
|
return g_boxed_copy (GST_TYPE_MPEGTS_SCTE_SPLICE_EVENT, splice);
|
|
}
|
|
|
|
static void
|
|
free_splice (GstMpegtsSCTESpliceEvent * splice)
|
|
{
|
|
g_boxed_free (GST_TYPE_MPEGTS_SCTE_SPLICE_EVENT, splice);
|
|
}
|
|
|
|
/* FIXME: get rid of this when depending on glib >= 2.62 */
|
|
|
|
static GPtrArray *
|
|
_g_ptr_array_copy (GPtrArray * array,
|
|
GCopyFunc func, GFreeFunc free_func, gpointer user_data)
|
|
{
|
|
GPtrArray *new_array;
|
|
|
|
g_return_val_if_fail (array != NULL, NULL);
|
|
|
|
new_array = g_ptr_array_new_with_free_func (free_func);
|
|
|
|
g_ptr_array_set_size (new_array, array->len);
|
|
|
|
if (func != NULL) {
|
|
guint i;
|
|
|
|
for (i = 0; i < array->len; i++)
|
|
new_array->pdata[i] = func (array->pdata[i], user_data);
|
|
} else if (array->len > 0) {
|
|
memcpy (new_array->pdata, array->pdata,
|
|
array->len * sizeof (*array->pdata));
|
|
}
|
|
|
|
new_array->len = array->len;
|
|
|
|
return new_array;
|
|
}
|
|
|
|
static GstMpegtsSCTESIT *
|
|
deep_copy_sit (const GstMpegtsSCTESIT * sit)
|
|
{
|
|
GstMpegtsSCTESIT *sit_copy = g_boxed_copy (GST_TYPE_MPEGTS_SCTE_SIT, sit);
|
|
GPtrArray *splices_copy =
|
|
_g_ptr_array_copy (sit_copy->splices, (GCopyFunc) copy_splice,
|
|
(GFreeFunc) free_splice, NULL);
|
|
|
|
g_ptr_array_unref (sit_copy->splices);
|
|
sit_copy->splices = splices_copy;
|
|
|
|
return sit_copy;
|
|
}
|
|
|
|
/* Takes ownership of @section.
|
|
*
|
|
* This function is a bit complex because the SCTE sections can
|
|
* have various origins:
|
|
*
|
|
* * Sections created by the application with the gst_mpegts_scte_*_new()
|
|
* API. The splice times / durations contained by these are expressed
|
|
* in the GStreamer running time domain, and must be translated to
|
|
* our local PES time domain. In this case, we will packetize the section
|
|
* ourselves.
|
|
*
|
|
* * Sections passed through from tsdemux: this case is complicated as
|
|
* splice times in the incoming stream may be encrypted, with pts_adjustment
|
|
* being the only timing field guaranteed *not* to be encrypted. In this
|
|
* case, the original binary data (section->data) will be reinjected as is
|
|
* in the output stream, with pts_adjustment adjusted. tsdemux provides us
|
|
* with the pts_offset it introduces, the difference between the original
|
|
* PES PTSs and the running times it outputs.
|
|
*
|
|
* Additionally, in either of these cases when the splice times aren't encrypted
|
|
* we want to make use of those to request keyframes. For the passthrough case,
|
|
* as the splice times are left untouched tsdemux provides us with the running
|
|
* times the section originally referred to. We cannot calculate it locally
|
|
* because we would need to have access to the information that the timestamps
|
|
* in the original PES domain have wrapped around, and how many times they have
|
|
* done so. While we could probably make educated guesses, tsdemux (more specifically
|
|
* mpegtspacketizer) already keeps track of that, and it seemed more logical to
|
|
* perform the calculation there and forward it alongside the downstream events.
|
|
*
|
|
* Finally, while we can't request keyframes at splice points in the encrypted
|
|
* case, if the input stream was compliant in that regard and no reencoding took
|
|
* place the splice times will still match with valid splice points, it is up
|
|
* to the application to ensure that that is the case.
|
|
*/
|
|
static void
|
|
handle_scte35_section (GstBaseTsMux * mux, GstEvent * event,
|
|
GstMpegtsSection * section, guint64 mpeg_pts_offset,
|
|
GstStructure * rtime_map)
|
|
{
|
|
GstMpegtsSCTESIT *sit;
|
|
guint i;
|
|
gboolean forward = TRUE;
|
|
guint64 pts_adjust;
|
|
guint8 *section_data;
|
|
guint8 *crc;
|
|
gboolean translate = FALSE;
|
|
|
|
sit = (GstMpegtsSCTESIT *) gst_mpegts_section_get_scte_sit (section);
|
|
|
|
/* When the application injects manually constructed splice events,
|
|
* their time domain is the GStreamer running time, we receive them
|
|
* unpacketized and translate the fields in the SIT to local PTS.
|
|
*
|
|
* We make a copy of the SIT in order to make sure we can rewrite it.
|
|
*/
|
|
if (sit->is_running_time) {
|
|
sit = deep_copy_sit (sit);
|
|
translate = TRUE;
|
|
}
|
|
|
|
switch (sit->splice_command_type) {
|
|
case GST_MTS_SCTE_SPLICE_COMMAND_NULL:
|
|
/* We implement heartbeating ourselves */
|
|
forward = FALSE;
|
|
break;
|
|
case GST_MTS_SCTE_SPLICE_COMMAND_SCHEDULE:
|
|
/* No need to request keyframes at this point, splice_insert
|
|
* messages will precede the future splice points and we
|
|
* can request keyframes then. Only translate if needed.
|
|
*/
|
|
if (translate) {
|
|
for (i = 0; i < sit->splices->len; i++) {
|
|
GstMpegtsSCTESpliceEvent *sevent =
|
|
g_ptr_array_index (sit->splices, i);
|
|
|
|
if (sevent->program_splice_time_specified)
|
|
sevent->program_splice_time =
|
|
GSTTIME_TO_MPEGTIME (sevent->program_splice_time) +
|
|
TS_MUX_CLOCK_BASE;
|
|
|
|
if (sevent->duration_flag)
|
|
sevent->break_duration =
|
|
GSTTIME_TO_MPEGTIME (sevent->break_duration);
|
|
}
|
|
}
|
|
break;
|
|
case GST_MTS_SCTE_SPLICE_COMMAND_INSERT:
|
|
/* We want keyframes at splice points */
|
|
if (sit->fully_parsed && (rtime_map || translate)) {
|
|
|
|
for (i = 0; i < sit->splices->len; i++) {
|
|
guint64 running_time = GST_CLOCK_TIME_NONE;
|
|
|
|
GstMpegtsSCTESpliceEvent *sevent =
|
|
g_ptr_array_index (sit->splices, i);
|
|
if (sevent->program_splice_time_specified) {
|
|
if (rtime_map) {
|
|
gchar *field_name = g_strdup_printf ("event-%u-splice-time",
|
|
sevent->splice_event_id);
|
|
if (gst_structure_get_uint64 (rtime_map, field_name,
|
|
&running_time)) {
|
|
GST_DEBUG_OBJECT (mux,
|
|
"Requesting keyframe for splice point at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (running_time));
|
|
request_keyframe (mux, running_time);
|
|
}
|
|
g_free (field_name);
|
|
} else {
|
|
g_assert (translate == TRUE);
|
|
running_time = sevent->program_splice_time;
|
|
GST_DEBUG_OBJECT (mux,
|
|
"Requesting keyframe for splice point at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (running_time));
|
|
request_keyframe (mux, running_time);
|
|
sevent->program_splice_time =
|
|
GSTTIME_TO_MPEGTIME (running_time) + TS_MUX_CLOCK_BASE;
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (mux,
|
|
"Requesting keyframe for immediate splice point");
|
|
request_keyframe (mux, GST_CLOCK_TIME_NONE);
|
|
}
|
|
|
|
if (sevent->duration_flag) {
|
|
if (translate) {
|
|
sevent->break_duration =
|
|
GSTTIME_TO_MPEGTIME (sevent->break_duration);
|
|
}
|
|
|
|
/* Even if auto_return is FALSE, when a break_duration is specified it
|
|
* is intended as a redundancy mechanism in case the follow-up
|
|
* splice insert goes missing.
|
|
*
|
|
* Schedule a keyframe at that point (if we can calculate its position
|
|
* accurately).
|
|
*/
|
|
if (GST_CLOCK_TIME_IS_VALID (running_time)) {
|
|
running_time += MPEGTIME_TO_GSTTIME (sevent->break_duration);
|
|
GST_DEBUG_OBJECT (mux,
|
|
"Requesting keyframe for end of break at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (running_time));
|
|
request_keyframe (mux, running_time);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case GST_MTS_SCTE_SPLICE_COMMAND_TIME:{
|
|
/* Adjust timestamps and potentially request keyframes */
|
|
gboolean do_request_keyframes = FALSE;
|
|
|
|
/* TODO: we can probably be a little more fine-tuned about determining
|
|
* whether a keyframe is actually needed, but this at least takes care
|
|
* of the requirement in 10.3.4 that a keyframe should not be created
|
|
* when the signal contains only a time_descriptor.
|
|
*/
|
|
if (sit->fully_parsed && (rtime_map || translate)) {
|
|
for (i = 0; i < sit->descriptors->len; i++) {
|
|
GstMpegtsDescriptor *descriptor =
|
|
g_ptr_array_index (sit->descriptors, i);
|
|
|
|
switch (descriptor->tag) {
|
|
case GST_MTS_SCTE_DESC_AVAIL:
|
|
case GST_MTS_SCTE_DESC_DTMF:
|
|
case GST_MTS_SCTE_DESC_SEGMENTATION:
|
|
do_request_keyframes = TRUE;
|
|
break;
|
|
case GST_MTS_SCTE_DESC_TIME:
|
|
case GST_MTS_SCTE_DESC_AUDIO:
|
|
break;
|
|
}
|
|
|
|
if (do_request_keyframes)
|
|
break;
|
|
}
|
|
|
|
if (sit->splice_time_specified) {
|
|
GstClockTime running_time = GST_CLOCK_TIME_NONE;
|
|
|
|
if (rtime_map) {
|
|
if (do_request_keyframes
|
|
&& gst_structure_get_uint64 (rtime_map, "splice-time",
|
|
&running_time)) {
|
|
GST_DEBUG_OBJECT (mux,
|
|
"Requesting keyframe for time signal at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (running_time));
|
|
request_keyframe (mux, running_time);
|
|
}
|
|
} else {
|
|
g_assert (translate);
|
|
running_time = sit->splice_time;
|
|
sit->splice_time =
|
|
GSTTIME_TO_MPEGTIME (running_time) + TS_MUX_CLOCK_BASE;
|
|
if (do_request_keyframes) {
|
|
GST_DEBUG_OBJECT (mux,
|
|
"Requesting keyframe for time signal at %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (running_time));
|
|
request_keyframe (mux, running_time);
|
|
}
|
|
}
|
|
} else if (do_request_keyframes) {
|
|
GST_DEBUG_OBJECT (mux,
|
|
"Requesting keyframe for immediate time signal");
|
|
request_keyframe (mux, GST_CLOCK_TIME_NONE);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case GST_MTS_SCTE_SPLICE_COMMAND_BANDWIDTH:
|
|
case GST_MTS_SCTE_SPLICE_COMMAND_PRIVATE:
|
|
/* Just let those go through untouched, none of our business */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!forward) {
|
|
gst_mpegts_section_unref (section);
|
|
return;
|
|
}
|
|
|
|
if (!translate) {
|
|
g_assert (section->data);
|
|
/* Calculate the final adjustment, as a sum of:
|
|
* - The adjustment in the original packet
|
|
* - The offset introduced between the original local PTS
|
|
* and the GStreamer PTS output by tsdemux
|
|
* - Our own 1-hour offset
|
|
*/
|
|
pts_adjust = sit->pts_adjustment + mpeg_pts_offset + TS_MUX_CLOCK_BASE;
|
|
|
|
/* Account for offsets potentially introduced between the demuxer and us */
|
|
pts_adjust +=
|
|
GSTTIME_TO_MPEGTIME (gst_event_get_running_time_offset (event));
|
|
|
|
pts_adjust &= 0x1ffffffff;
|
|
section_data = g_memdup2 (section->data, section->section_length);
|
|
section_data[4] |= pts_adjust >> 32;
|
|
section_data[5] = pts_adjust >> 24;
|
|
section_data[6] = pts_adjust >> 16;
|
|
section_data[7] = pts_adjust >> 8;
|
|
section_data[8] = pts_adjust;
|
|
|
|
/* Now rewrite our checksum */
|
|
crc = section_data + section->section_length - 4;
|
|
GST_WRITE_UINT32_BE (crc, _calc_crc32 (section_data, crc - section_data));
|
|
|
|
GST_OBJECT_LOCK (mux);
|
|
GST_DEBUG_OBJECT (mux, "Storing SCTE section");
|
|
if (mux->pending_scte35_section)
|
|
gst_mpegts_section_unref (mux->pending_scte35_section);
|
|
mux->pending_scte35_section =
|
|
gst_mpegts_section_new (mux->scte35_pid, section_data,
|
|
section->section_length);
|
|
GST_OBJECT_UNLOCK (mux);
|
|
|
|
gst_mpegts_section_unref (section);
|
|
} else {
|
|
GST_OBJECT_LOCK (mux);
|
|
GST_DEBUG_OBJECT (mux, "Storing SCTE section");
|
|
gst_mpegts_section_unref (section);
|
|
if (mux->pending_scte35_section)
|
|
gst_mpegts_section_unref (mux->pending_scte35_section);
|
|
mux->pending_scte35_section =
|
|
gst_mpegts_section_from_scte_sit (sit, mux->scte35_pid);;
|
|
GST_OBJECT_UNLOCK (mux);
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_ts_mux_send_event (GstElement * element, GstEvent * event)
|
|
{
|
|
GstMpegtsSection *section;
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (element);
|
|
|
|
section = gst_event_parse_mpegts_section (event);
|
|
|
|
if (section) {
|
|
GST_DEBUG ("Received event with mpegts section");
|
|
|
|
if (section->section_type == GST_MPEGTS_SECTION_SCTE_SIT) {
|
|
handle_scte35_section (mux, event, section, 0, NULL);
|
|
} else {
|
|
g_mutex_lock (&mux->lock);
|
|
/* TODO: Check that the section type is supported */
|
|
tsmux_add_mpegts_si_section (mux->tsmux, section);
|
|
g_mutex_unlock (&mux->lock);
|
|
}
|
|
|
|
gst_event_unref (event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return GST_ELEMENT_CLASS (parent_class)->send_event (element, event);
|
|
}
|
|
|
|
/* GstAggregator implementation */
|
|
|
|
static gboolean
|
|
gst_base_ts_mux_sink_event (GstAggregator * agg, GstAggregatorPad * agg_pad,
|
|
GstEvent * event)
|
|
{
|
|
GstAggregatorClass *agg_class = GST_AGGREGATOR_CLASS (parent_class);
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (agg);
|
|
GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (agg_pad);
|
|
gboolean res = FALSE;
|
|
gboolean forward = TRUE;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:
|
|
{
|
|
GstCaps *caps;
|
|
GstFlowReturn ret;
|
|
GList *cur;
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
if (ts_pad->stream == NULL) {
|
|
g_mutex_unlock (&mux->lock);
|
|
break;
|
|
}
|
|
|
|
forward = FALSE;
|
|
|
|
gst_event_parse_caps (event, &caps);
|
|
if (!caps || !gst_caps_is_fixed (caps)) {
|
|
g_mutex_unlock (&mux->lock);
|
|
break;
|
|
}
|
|
|
|
ret = gst_base_ts_mux_create_or_update_stream (mux, ts_pad, caps);
|
|
if (ret != GST_FLOW_OK) {
|
|
g_mutex_unlock (&mux->lock);
|
|
break;
|
|
}
|
|
|
|
mux->tsmux->pat_changed = TRUE;
|
|
mux->tsmux->si_changed = TRUE;
|
|
tsmux_resend_pat (mux->tsmux);
|
|
tsmux_resend_si (mux->tsmux);
|
|
|
|
/* output PMT for each program */
|
|
for (cur = mux->tsmux->programs; cur; cur = cur->next) {
|
|
TsMuxProgram *program = (TsMuxProgram *) cur->data;
|
|
|
|
program->pmt_changed = TRUE;
|
|
tsmux_resend_pmt (program);
|
|
}
|
|
g_mutex_unlock (&mux->lock);
|
|
|
|
res = TRUE;
|
|
break;
|
|
}
|
|
case GST_EVENT_CUSTOM_DOWNSTREAM:
|
|
{
|
|
GstClockTime timestamp, stream_time, running_time;
|
|
gboolean all_headers;
|
|
guint count;
|
|
const GstStructure *s;
|
|
|
|
s = gst_event_get_structure (event);
|
|
|
|
if (gst_structure_has_name (s, "scte-sit") && mux->scte35_pid != 0) {
|
|
|
|
/* When operating downstream of tsdemux, tsdemux will send out events
|
|
* on all its source pads for each splice table it encounters. If we
|
|
* are remuxing multiple streams it has demuxed, this means we could
|
|
* unnecessarily repeat the same table multiple times, we avoid that
|
|
* by deduplicating thanks to the event sequm
|
|
*/
|
|
if (gst_event_get_seqnum (event) != mux->last_scte35_event_seqnum) {
|
|
GstMpegtsSection *section;
|
|
|
|
gst_structure_get (s, "section", GST_TYPE_MPEGTS_SECTION, §ion,
|
|
NULL);
|
|
if (section) {
|
|
guint64 mpeg_pts_offset = 0;
|
|
GstStructure *rtime_map = NULL;
|
|
|
|
gst_structure_get (s, "running-time-map", GST_TYPE_STRUCTURE,
|
|
&rtime_map, NULL);
|
|
gst_structure_get_uint64 (s, "mpeg-pts-offset", &mpeg_pts_offset);
|
|
|
|
handle_scte35_section (mux, event, section, mpeg_pts_offset,
|
|
rtime_map);
|
|
if (rtime_map)
|
|
gst_structure_free (rtime_map);
|
|
mux->last_scte35_event_seqnum = gst_event_get_seqnum (event);
|
|
} else {
|
|
GST_WARNING_OBJECT (ts_pad,
|
|
"Ignoring scte-sit event without a section");
|
|
}
|
|
} else {
|
|
GST_DEBUG_OBJECT (ts_pad, "Ignoring duplicate scte-sit event");
|
|
}
|
|
res = TRUE;
|
|
forward = FALSE;
|
|
goto out;
|
|
}
|
|
|
|
if (!gst_video_event_is_force_key_unit (event))
|
|
goto out;
|
|
|
|
res = TRUE;
|
|
forward = FALSE;
|
|
|
|
gst_video_event_parse_downstream_force_key_unit (event,
|
|
×tamp, &stream_time, &running_time, &all_headers, &count);
|
|
GST_INFO_OBJECT (ts_pad, "have downstream force-key-unit event, "
|
|
"seqnum %d, running-time %" GST_TIME_FORMAT " count %d",
|
|
gst_event_get_seqnum (event), GST_TIME_ARGS (running_time), count);
|
|
|
|
if (mux->force_key_unit_event != NULL) {
|
|
GST_INFO_OBJECT (mux, "skipping downstream force key unit event "
|
|
"as an upstream force key unit is already queued");
|
|
goto out;
|
|
}
|
|
|
|
if (!all_headers)
|
|
goto out;
|
|
|
|
mux->pending_key_unit_ts = running_time;
|
|
gst_event_replace (&mux->force_key_unit_event, event);
|
|
break;
|
|
}
|
|
case GST_EVENT_TAG:{
|
|
GstTagList *list;
|
|
gchar *lang = NULL;
|
|
|
|
GST_DEBUG_OBJECT (mux, "received tag event");
|
|
gst_event_parse_tag (event, &list);
|
|
|
|
/* Matroska wants ISO 639-2B code, taglist most likely contains 639-1 */
|
|
if (gst_tag_list_get_string (list, GST_TAG_LANGUAGE_CODE, &lang)) {
|
|
const gchar *lang_code;
|
|
|
|
lang_code = gst_tag_get_language_code_iso_639_2B (lang);
|
|
if (lang_code) {
|
|
GST_DEBUG_OBJECT (ts_pad, "Setting language to '%s'", lang_code);
|
|
|
|
g_free (ts_pad->language);
|
|
ts_pad->language = g_strdup (lang_code);
|
|
} else {
|
|
GST_WARNING_OBJECT (ts_pad, "Did not get language code for '%s'",
|
|
lang);
|
|
}
|
|
g_free (lang);
|
|
}
|
|
|
|
/* handled this, don't want collectpads to forward it downstream */
|
|
res = TRUE;
|
|
forward = gst_tag_list_get_scope (list) == GST_TAG_SCOPE_GLOBAL;
|
|
break;
|
|
}
|
|
case GST_EVENT_STREAM_START:{
|
|
GstStreamFlags flags;
|
|
|
|
gst_event_parse_stream_flags (event, &flags);
|
|
|
|
/* Don't wait for data on sparse inputs like metadata streams */
|
|
/*
|
|
if ((flags & GST_STREAM_FLAG_SPARSE)) {
|
|
GST_COLLECT_PADS_STATE_UNSET (data, GST_COLLECT_PADS_STATE_LOCKED);
|
|
gst_collect_pads_set_waiting (pads, data, FALSE);
|
|
GST_COLLECT_PADS_STATE_SET (data, GST_COLLECT_PADS_STATE_LOCKED);
|
|
}
|
|
*/
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
out:
|
|
if (!forward)
|
|
gst_event_unref (event);
|
|
else
|
|
res = agg_class->sink_event (agg, agg_pad, event);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_ts_mux_src_event (GstAggregator * agg, GstEvent * event)
|
|
{
|
|
GstAggregatorClass *agg_class = GST_AGGREGATOR_CLASS (parent_class);
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (agg);
|
|
gboolean res = TRUE, forward = TRUE;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CUSTOM_UPSTREAM:
|
|
{
|
|
GstIterator *iter;
|
|
GValue sinkpad_value = G_VALUE_INIT;
|
|
GstClockTime running_time;
|
|
gboolean all_headers, done = FALSE;
|
|
guint count;
|
|
|
|
if (!gst_video_event_is_force_key_unit (event))
|
|
break;
|
|
|
|
forward = FALSE;
|
|
|
|
gst_video_event_parse_upstream_force_key_unit (event,
|
|
&running_time, &all_headers, &count);
|
|
|
|
GST_INFO_OBJECT (mux, "received upstream force-key-unit event, "
|
|
"seqnum %d running_time %" GST_TIME_FORMAT " all_headers %d count %d",
|
|
gst_event_get_seqnum (event), GST_TIME_ARGS (running_time),
|
|
all_headers, count);
|
|
|
|
if (!all_headers)
|
|
break;
|
|
|
|
mux->pending_key_unit_ts = running_time;
|
|
gst_event_replace (&mux->force_key_unit_event, event);
|
|
|
|
iter = gst_element_iterate_sink_pads (GST_ELEMENT_CAST (mux));
|
|
|
|
while (!done) {
|
|
switch (gst_iterator_next (iter, &sinkpad_value)) {
|
|
case GST_ITERATOR_OK:{
|
|
GstPad *sinkpad = g_value_get_object (&sinkpad_value);
|
|
gboolean tmp;
|
|
|
|
GST_INFO_OBJECT (GST_AGGREGATOR_SRC_PAD (agg), "forwarding");
|
|
tmp = gst_pad_push_event (sinkpad, gst_event_ref (event));
|
|
GST_INFO_OBJECT (mux, "result %d", tmp);
|
|
/* succeed if at least one pad succeeds */
|
|
res |= tmp;
|
|
break;
|
|
}
|
|
case GST_ITERATOR_DONE:
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_RESYNC:
|
|
gst_iterator_resync (iter);
|
|
break;
|
|
case GST_ITERATOR_ERROR:
|
|
g_assert_not_reached ();
|
|
break;
|
|
}
|
|
g_value_reset (&sinkpad_value);
|
|
}
|
|
g_value_unset (&sinkpad_value);
|
|
gst_iterator_free (iter);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (forward)
|
|
res = agg_class->src_event (agg, event);
|
|
else
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
static GstBuffer *
|
|
gst_base_ts_mux_clip (GstAggregator * agg,
|
|
GstAggregatorPad * agg_pad, GstBuffer * buf)
|
|
{
|
|
GstBaseTsMuxPad *pad = GST_BASE_TS_MUX_PAD (agg_pad);
|
|
GstClockTime time;
|
|
GstBuffer *ret;
|
|
|
|
ret = buf;
|
|
|
|
/* PTS */
|
|
time = GST_BUFFER_PTS (buf);
|
|
|
|
/* invalid left alone and passed */
|
|
if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
|
|
time =
|
|
gst_segment_to_running_time (&agg_pad->segment, GST_FORMAT_TIME, time);
|
|
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (time))) {
|
|
GST_DEBUG_OBJECT (pad, "clipping buffer on pad outside segment");
|
|
gst_buffer_unref (buf);
|
|
ret = NULL;
|
|
goto beach;
|
|
} else {
|
|
GST_LOG_OBJECT (pad, "buffer pts %" GST_TIME_FORMAT " -> %"
|
|
GST_TIME_FORMAT " running time",
|
|
GST_TIME_ARGS (GST_BUFFER_PTS (buf)), GST_TIME_ARGS (time));
|
|
buf = ret = gst_buffer_make_writable (buf);
|
|
GST_BUFFER_PTS (ret) = time;
|
|
}
|
|
}
|
|
|
|
/* DTS */
|
|
time = GST_BUFFER_DTS (buf);
|
|
|
|
/* invalid left alone and passed */
|
|
if (G_LIKELY (GST_CLOCK_TIME_IS_VALID (time))) {
|
|
gint sign;
|
|
gint64 dts;
|
|
|
|
sign = gst_segment_to_running_time_full (&agg_pad->segment, GST_FORMAT_TIME,
|
|
time, &time);
|
|
|
|
if (sign > 0)
|
|
dts = (gint64) time;
|
|
else
|
|
dts = -((gint64) time);
|
|
|
|
GST_LOG_OBJECT (pad, "buffer dts %" GST_TIME_FORMAT " -> %"
|
|
GST_STIME_FORMAT " running time", GST_TIME_ARGS (GST_BUFFER_DTS (buf)),
|
|
GST_STIME_ARGS (dts));
|
|
|
|
if (GST_CLOCK_STIME_IS_VALID (pad->dts) && dts < pad->dts) {
|
|
/* Ignore DTS going backward */
|
|
GST_WARNING_OBJECT (pad, "ignoring DTS going backward");
|
|
dts = pad->dts;
|
|
}
|
|
|
|
ret = gst_buffer_make_writable (buf);
|
|
if (sign > 0)
|
|
GST_BUFFER_DTS (ret) = time;
|
|
else
|
|
GST_BUFFER_DTS (ret) = GST_CLOCK_TIME_NONE;
|
|
|
|
pad->dts = dts;
|
|
} else {
|
|
pad->dts = GST_CLOCK_STIME_NONE;
|
|
}
|
|
|
|
beach:
|
|
return ret;
|
|
}
|
|
|
|
static GstBaseTsMuxPad *
|
|
gst_base_ts_mux_find_best_pad (GstAggregator * aggregator)
|
|
{
|
|
GstBaseTsMuxPad *best = NULL;
|
|
GstClockTime best_ts = GST_CLOCK_TIME_NONE;
|
|
GList *l;
|
|
|
|
GST_OBJECT_LOCK (aggregator);
|
|
|
|
for (l = GST_ELEMENT_CAST (aggregator)->sinkpads; l; l = l->next) {
|
|
GstBaseTsMuxPad *tpad = GST_BASE_TS_MUX_PAD (l->data);
|
|
GstAggregatorPad *apad = GST_AGGREGATOR_PAD_CAST (tpad);
|
|
GstBuffer *buffer;
|
|
|
|
buffer = gst_aggregator_pad_peek_buffer (apad);
|
|
if (!buffer)
|
|
continue;
|
|
if (best_ts == GST_CLOCK_TIME_NONE) {
|
|
best = tpad;
|
|
best_ts = GST_BUFFER_DTS_OR_PTS (buffer);
|
|
} else if (GST_BUFFER_DTS_OR_PTS (buffer) != GST_CLOCK_TIME_NONE) {
|
|
GstClockTime t = GST_BUFFER_DTS_OR_PTS (buffer);
|
|
if (t < best_ts) {
|
|
best = tpad;
|
|
best_ts = t;
|
|
}
|
|
}
|
|
gst_buffer_unref (buffer);
|
|
}
|
|
|
|
if (best)
|
|
gst_object_ref (best);
|
|
|
|
GST_OBJECT_UNLOCK (aggregator);
|
|
|
|
GST_DEBUG_OBJECT (aggregator,
|
|
"Best pad found with %" GST_TIME_FORMAT ": %" GST_PTR_FORMAT,
|
|
GST_TIME_ARGS (best_ts), best);
|
|
|
|
return best;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_ts_mux_are_all_pads_eos (GstBaseTsMux * mux)
|
|
{
|
|
GList *l;
|
|
gboolean ret = TRUE;
|
|
|
|
GST_OBJECT_LOCK (mux);
|
|
|
|
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
|
|
GstBaseTsMuxPad *pad = GST_BASE_TS_MUX_PAD (l->data);
|
|
|
|
if (!gst_aggregator_pad_is_eos (GST_AGGREGATOR_PAD (pad))) {
|
|
ret = FALSE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
GST_OBJECT_UNLOCK (mux);
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static GstFlowReturn
|
|
gst_base_ts_mux_aggregate (GstAggregator * agg, gboolean timeout)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (agg);
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstBaseTsMuxPad *best = gst_base_ts_mux_find_best_pad (agg);
|
|
|
|
if (best) {
|
|
GstBuffer *buffer;
|
|
|
|
buffer = gst_aggregator_pad_pop_buffer (GST_AGGREGATOR_PAD (best));
|
|
if (!buffer) {
|
|
/* We might have gotten a flush event after we picked the pad */
|
|
goto done;
|
|
}
|
|
|
|
ret =
|
|
gst_base_ts_mux_aggregate_buffer (GST_BASE_TS_MUX (agg),
|
|
GST_AGGREGATOR_PAD (best), buffer);
|
|
|
|
gst_object_unref (best);
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
if (gst_base_ts_mux_are_all_pads_eos (mux)) {
|
|
GstBaseTsMuxClass *klass = GST_BASE_TS_MUX_GET_CLASS (mux);
|
|
/* drain some possibly cached data */
|
|
if (klass->drain)
|
|
klass->drain (mux);
|
|
gst_base_ts_mux_push_packets (mux, TRUE);
|
|
|
|
ret = GST_FLOW_EOS;
|
|
}
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_ts_mux_start (GstAggregator * agg)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (agg);
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
gst_base_ts_mux_reset (mux, TRUE);
|
|
g_mutex_unlock (&mux->lock);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_ts_mux_stop (GstAggregator * agg)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (agg);
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
gst_base_ts_mux_reset (GST_BASE_TS_MUX (agg), TRUE);
|
|
g_mutex_unlock (&mux->lock);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* GObject implementation */
|
|
|
|
static void
|
|
gst_base_ts_mux_dispose (GObject * object)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (object);
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
gst_base_ts_mux_reset (mux, FALSE);
|
|
|
|
if (mux->out_adapter) {
|
|
g_object_unref (mux->out_adapter);
|
|
mux->out_adapter = NULL;
|
|
}
|
|
if (mux->prog_map) {
|
|
gst_structure_free (mux->prog_map);
|
|
mux->prog_map = NULL;
|
|
}
|
|
if (mux->programs) {
|
|
g_hash_table_destroy (mux->programs);
|
|
mux->programs = NULL;
|
|
}
|
|
g_mutex_unlock (&mux->lock);
|
|
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_finalize (GObject * object)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (object);
|
|
|
|
g_mutex_clear (&mux->lock);
|
|
GST_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_constructed (GObject * object)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (object);
|
|
|
|
/* initial state */
|
|
g_mutex_lock (&mux->lock);
|
|
gst_base_ts_mux_reset (mux, TRUE);
|
|
g_mutex_unlock (&mux->lock);
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (object);
|
|
GList *l;
|
|
|
|
switch (prop_id) {
|
|
case PROP_PROG_MAP:
|
|
{
|
|
const GstStructure *s = gst_value_get_structure (value);
|
|
if (mux->prog_map) {
|
|
gst_structure_free (mux->prog_map);
|
|
}
|
|
if (s)
|
|
mux->prog_map = gst_structure_copy (s);
|
|
else
|
|
mux->prog_map = NULL;
|
|
break;
|
|
}
|
|
case PROP_PAT_INTERVAL:
|
|
mux->pat_interval = g_value_get_uint (value);
|
|
g_mutex_lock (&mux->lock);
|
|
if (mux->tsmux)
|
|
tsmux_set_pat_interval (mux->tsmux, mux->pat_interval);
|
|
g_mutex_unlock (&mux->lock);
|
|
break;
|
|
case PROP_PMT_INTERVAL:
|
|
mux->pmt_interval = g_value_get_uint (value);
|
|
GST_OBJECT_LOCK (mux);
|
|
for (l = GST_ELEMENT_CAST (mux)->sinkpads; l; l = l->next) {
|
|
GstBaseTsMuxPad *ts_pad = GST_BASE_TS_MUX_PAD (l->data);
|
|
|
|
g_mutex_lock (&mux->lock);
|
|
tsmux_set_pmt_interval (ts_pad->prog, mux->pmt_interval);
|
|
g_mutex_unlock (&mux->lock);
|
|
}
|
|
GST_OBJECT_UNLOCK (mux);
|
|
break;
|
|
case PROP_ALIGNMENT:
|
|
mux->alignment = g_value_get_int (value);
|
|
break;
|
|
case PROP_SI_INTERVAL:
|
|
mux->si_interval = g_value_get_uint (value);
|
|
g_mutex_lock (&mux->lock);
|
|
tsmux_set_si_interval (mux->tsmux, mux->si_interval);
|
|
g_mutex_unlock (&mux->lock);
|
|
break;
|
|
case PROP_BITRATE:
|
|
mux->bitrate = g_value_get_uint64 (value);
|
|
g_mutex_lock (&mux->lock);
|
|
if (mux->tsmux)
|
|
tsmux_set_bitrate (mux->tsmux, mux->bitrate);
|
|
g_mutex_unlock (&mux->lock);
|
|
break;
|
|
case PROP_PCR_INTERVAL:
|
|
mux->pcr_interval = g_value_get_uint (value);
|
|
g_mutex_lock (&mux->lock);
|
|
if (mux->tsmux)
|
|
tsmux_set_pcr_interval (mux->tsmux, mux->pcr_interval);
|
|
g_mutex_unlock (&mux->lock);
|
|
break;
|
|
case PROP_SCTE_35_PID:
|
|
mux->scte35_pid = g_value_get_uint (value);
|
|
break;
|
|
case PROP_SCTE_35_NULL_INTERVAL:
|
|
mux->scte35_null_interval = g_value_get_uint (value);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstBaseTsMux *mux = GST_BASE_TS_MUX (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_PROG_MAP:
|
|
gst_value_set_structure (value, mux->prog_map);
|
|
break;
|
|
case PROP_PAT_INTERVAL:
|
|
g_value_set_uint (value, mux->pat_interval);
|
|
break;
|
|
case PROP_PMT_INTERVAL:
|
|
g_value_set_uint (value, mux->pmt_interval);
|
|
break;
|
|
case PROP_ALIGNMENT:
|
|
g_value_set_int (value, mux->alignment);
|
|
break;
|
|
case PROP_SI_INTERVAL:
|
|
g_value_set_uint (value, mux->si_interval);
|
|
break;
|
|
case PROP_BITRATE:
|
|
g_value_set_uint64 (value, mux->bitrate);
|
|
break;
|
|
case PROP_PCR_INTERVAL:
|
|
g_value_set_uint (value, mux->pcr_interval);
|
|
break;
|
|
case PROP_SCTE_35_PID:
|
|
g_value_set_uint (value, mux->scte35_pid);
|
|
break;
|
|
case PROP_SCTE_35_NULL_INTERVAL:
|
|
g_value_set_uint (value, mux->scte35_null_interval);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Default vmethods implementation */
|
|
|
|
static TsMux *
|
|
gst_base_ts_mux_default_create_ts_mux (GstBaseTsMux * mux)
|
|
{
|
|
TsMux *tsmux = tsmux_new ();
|
|
tsmux_set_write_func (tsmux, new_packet_cb, mux);
|
|
tsmux_set_alloc_func (tsmux, alloc_packet_cb, mux);
|
|
tsmux_set_pat_interval (tsmux, mux->pat_interval);
|
|
tsmux_set_si_interval (tsmux, mux->si_interval);
|
|
tsmux_set_bitrate (tsmux, mux->bitrate);
|
|
tsmux_set_pcr_interval (tsmux, mux->pcr_interval);
|
|
|
|
return tsmux;
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_default_allocate_packet (GstBaseTsMux * mux,
|
|
GstBuffer ** buffer)
|
|
{
|
|
GstBuffer *buf;
|
|
|
|
buf = gst_buffer_new_and_alloc (mux->packet_size);
|
|
|
|
*buffer = buf;
|
|
}
|
|
|
|
static gboolean
|
|
gst_base_ts_mux_default_output_packet (GstBaseTsMux * mux, GstBuffer * buffer,
|
|
gint64 new_pcr)
|
|
{
|
|
gst_base_ts_mux_collect_packet (mux, buffer);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Subclass API */
|
|
|
|
void
|
|
gst_base_ts_mux_set_packet_size (GstBaseTsMux * mux, gsize size)
|
|
{
|
|
mux->packet_size = size;
|
|
}
|
|
|
|
void
|
|
gst_base_ts_mux_set_automatic_alignment (GstBaseTsMux * mux, gsize alignment)
|
|
{
|
|
mux->automatic_alignment = alignment;
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_class_init (GstBaseTsMuxClass * klass)
|
|
{
|
|
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
GstAggregatorClass *gstagg_class = GST_AGGREGATOR_CLASS (klass);
|
|
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_base_ts_mux_debug, "basetsmux", 0,
|
|
"MPEG Transport Stream muxer");
|
|
|
|
gst_element_class_set_static_metadata (gstelement_class,
|
|
"MPEG Transport Stream Muxer", "Codec/Muxer",
|
|
"Multiplexes media streams into an MPEG Transport Stream",
|
|
"Fluendo <contact@fluendo.com>");
|
|
|
|
gobject_class->set_property =
|
|
GST_DEBUG_FUNCPTR (gst_base_ts_mux_set_property);
|
|
gobject_class->get_property =
|
|
GST_DEBUG_FUNCPTR (gst_base_ts_mux_get_property);
|
|
gobject_class->dispose = gst_base_ts_mux_dispose;
|
|
gobject_class->finalize = gst_base_ts_mux_finalize;
|
|
gobject_class->constructed = gst_base_ts_mux_constructed;
|
|
|
|
gstelement_class->request_new_pad = gst_base_ts_mux_request_new_pad;
|
|
gstelement_class->release_pad = gst_base_ts_mux_release_pad;
|
|
gstelement_class->send_event = gst_base_ts_mux_send_event;
|
|
|
|
gstagg_class->negotiate = NULL;
|
|
gstagg_class->aggregate = gst_base_ts_mux_aggregate;
|
|
gstagg_class->clip = gst_base_ts_mux_clip;
|
|
gstagg_class->sink_event = gst_base_ts_mux_sink_event;
|
|
gstagg_class->src_event = gst_base_ts_mux_src_event;
|
|
gstagg_class->start = gst_base_ts_mux_start;
|
|
gstagg_class->stop = gst_base_ts_mux_stop;
|
|
|
|
klass->create_ts_mux = gst_base_ts_mux_default_create_ts_mux;
|
|
klass->allocate_packet = gst_base_ts_mux_default_allocate_packet;
|
|
klass->output_packet = gst_base_ts_mux_default_output_packet;
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PROG_MAP,
|
|
g_param_spec_boxed ("prog-map", "Program map",
|
|
"A GstStructure specifies the mapping from elementary streams to programs",
|
|
GST_TYPE_STRUCTURE,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PAT_INTERVAL,
|
|
g_param_spec_uint ("pat-interval", "PAT interval",
|
|
"Set the interval (in ticks of the 90kHz clock) for writing out the PAT table",
|
|
1, G_MAXUINT, TSMUX_DEFAULT_PAT_INTERVAL,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PMT_INTERVAL,
|
|
g_param_spec_uint ("pmt-interval", "PMT interval",
|
|
"Set the interval (in ticks of the 90kHz clock) for writing out the PMT table",
|
|
1, G_MAXUINT, TSMUX_DEFAULT_PMT_INTERVAL,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_ALIGNMENT,
|
|
g_param_spec_int ("alignment", "packet alignment",
|
|
"Number of packets per buffer (padded with dummy packets on EOS) "
|
|
"(-1 = auto, 0 = all available packets, 7 for UDP streaming)",
|
|
-1, G_MAXINT, BASETSMUX_DEFAULT_ALIGNMENT,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SI_INTERVAL,
|
|
g_param_spec_uint ("si-interval", "SI interval",
|
|
"Set the interval (in ticks of the 90kHz clock) for writing out the Service"
|
|
"Information tables", 1, G_MAXUINT, TSMUX_DEFAULT_SI_INTERVAL,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_BITRATE,
|
|
g_param_spec_uint64 ("bitrate", "Bitrate (in bits per second)",
|
|
"Set the target bitrate, will insert null packets as padding "
|
|
" to achieve multiplex-wide constant bitrate (0 means no padding)",
|
|
0, G_MAXUINT64, TSMUX_DEFAULT_BITRATE,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PCR_INTERVAL,
|
|
g_param_spec_uint ("pcr-interval", "PCR interval",
|
|
"Set the interval (in ticks of the 90kHz clock) for writing PCR",
|
|
1, G_MAXUINT, TSMUX_DEFAULT_PCR_INTERVAL,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SCTE_35_PID,
|
|
g_param_spec_uint ("scte-35-pid", "SCTE-35 PID",
|
|
"PID to use for inserting SCTE-35 packets (0: unused)",
|
|
0, G_MAXUINT, DEFAULT_SCTE_35_PID,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
g_object_class_install_property (G_OBJECT_CLASS (klass),
|
|
PROP_SCTE_35_NULL_INTERVAL, g_param_spec_uint ("scte-35-null-interval",
|
|
"SCTE-35 NULL packet interval",
|
|
"Set the interval (in ticks of the 90kHz clock) for writing SCTE-35 NULL (heartbeat) packets."
|
|
" (only valid if scte-35-pid is different from 0)", 1, G_MAXUINT,
|
|
TSMUX_DEFAULT_SCTE_35_NULL_INTERVAL,
|
|
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
|
|
|
|
gst_element_class_add_static_pad_template_with_gtype (gstelement_class,
|
|
&gst_base_ts_mux_src_factory, GST_TYPE_AGGREGATOR_PAD);
|
|
|
|
gst_type_mark_as_plugin_api (GST_TYPE_BASE_TS_MUX_PAD, 0);
|
|
}
|
|
|
|
static void
|
|
gst_base_ts_mux_init (GstBaseTsMux * mux)
|
|
{
|
|
mux->out_adapter = gst_adapter_new ();
|
|
|
|
/* properties */
|
|
mux->pat_interval = TSMUX_DEFAULT_PAT_INTERVAL;
|
|
mux->pmt_interval = TSMUX_DEFAULT_PMT_INTERVAL;
|
|
mux->si_interval = TSMUX_DEFAULT_SI_INTERVAL;
|
|
mux->pcr_interval = TSMUX_DEFAULT_PCR_INTERVAL;
|
|
mux->prog_map = NULL;
|
|
mux->alignment = BASETSMUX_DEFAULT_ALIGNMENT;
|
|
mux->bitrate = TSMUX_DEFAULT_BITRATE;
|
|
mux->scte35_pid = DEFAULT_SCTE_35_PID;
|
|
mux->scte35_null_interval = TSMUX_DEFAULT_SCTE_35_NULL_INTERVAL;
|
|
|
|
mux->packet_size = GST_BASE_TS_MUX_NORMAL_PACKET_LENGTH;
|
|
mux->automatic_alignment = 0;
|
|
|
|
g_mutex_init (&mux->lock);
|
|
}
|