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1505 lines
45 KiB
C
1505 lines
45 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 4 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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* four licenses are the MPL 1.1, the LGPL, the GPL and the MIT
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* 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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* GPL:
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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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*/
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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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/* FIXME 0.11: suppress warnings for deprecated API such as GStaticRecMutex
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* with newer GLib versions (>= 2.31.0) */
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#define GLIB_DISABLE_DEPRECATION_WARNINGS
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#include <gst/video/video.h>
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#include "mpegtsmux.h"
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#include "mpegtsmux_h264.h"
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#include "mpegtsmux_aac.h"
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GST_DEBUG_CATEGORY (mpegtsmux_debug);
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#define GST_CAT_DEFAULT mpegtsmux_debug
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enum
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{
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ARG_0,
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ARG_PROG_MAP,
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ARG_M2TS_MODE,
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ARG_PAT_INTERVAL,
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ARG_PMT_INTERVAL,
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ARG_ALIGNMENT
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};
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#define MPEGTSMUX_DEFAULT_ALIGNMENT -1
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#define MPEGTSMUX_DEFAULT_M2TS FALSE
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static GstStaticPadTemplate mpegtsmux_sink_factory =
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GST_STATIC_PAD_TEMPLATE ("sink_%d",
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GST_PAD_SINK,
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GST_PAD_REQUEST,
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GST_STATIC_CAPS ("video/mpeg, "
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"mpegversion = (int) { 1, 2, 4 }, "
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"systemstream = (boolean) false; "
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"video/x-dirac;"
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"video/x-h264,stream-format=(string)byte-stream;"
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"audio/mpeg, "
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"mpegversion = (int) { 1, 2 };"
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"audio/mpeg, "
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"mpegversion = (int) 4, stream-format = (string) { raw, adts };"
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"audio/x-lpcm, "
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"width = (int) { 16, 20, 24 }, "
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"rate = (int) { 48000, 96000 }, "
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"channels = (int) [ 1, 8 ], "
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"dynamic_range = (int) [ 0, 255 ], "
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"emphasis = (boolean) { FALSE, TRUE }, "
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"mute = (boolean) { FALSE, TRUE }; " "audio/x-ac3;" "audio/x-dts"));
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static GstStaticPadTemplate mpegtsmux_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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static void gst_mpegtsmux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_mpegtsmux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void mpegtsmux_reset (MpegTsMux * mux, gboolean alloc);
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static void mpegtsmux_dispose (GObject * object);
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static gboolean new_packet_cb (guint8 * data, guint len, void *user_data,
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gint64 new_pcr);
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static void release_buffer_cb (guint8 * data, void *user_data);
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static GstFlowReturn mpegtsmux_collect_packet (MpegTsMux * mux,
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GstBuffer * buf);
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static GstFlowReturn mpegtsmux_push_packets (MpegTsMux * mux, gboolean force);
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static gboolean new_packet_m2ts (MpegTsMux * mux, GstBuffer * buf,
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gint64 new_pcr);
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static void mpegtsdemux_prepare_srcpad (MpegTsMux * mux);
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static GstFlowReturn mpegtsmux_collected (GstCollectPads2 * pads,
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MpegTsMux * mux);
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static gboolean mpegtsmux_sink_event (GstCollectPads2 * pads,
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GstCollectData2 * data, GstEvent * event, gpointer user_data);
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static GstPad *mpegtsmux_request_new_pad (GstElement * element,
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GstPadTemplate * templ, const gchar * name);
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static void mpegtsmux_release_pad (GstElement * element, GstPad * pad);
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static GstStateChangeReturn mpegtsmux_change_state (GstElement * element,
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GstStateChange transition);
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static void mpegtsdemux_set_header_on_caps (MpegTsMux * mux);
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static gboolean mpegtsmux_src_event (GstPad * pad, GstEvent * event);
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GST_BOILERPLATE (MpegTsMux, mpegtsmux, GstElement, GST_TYPE_ELEMENT);
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static void
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mpegtsmux_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_static_pad_template (element_class,
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&mpegtsmux_sink_factory);
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gst_element_class_add_static_pad_template (element_class,
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&mpegtsmux_src_factory);
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gst_element_class_set_details_simple (element_class,
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"MPEG Transport Stream Muxer", "Codec/Muxer",
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"Multiplexes media streams into an MPEG Transport Stream",
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"Fluendo <contact@fluendo.com>");
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}
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static void
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mpegtsmux_class_init (MpegTsMuxClass * klass)
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{
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->set_property = GST_DEBUG_FUNCPTR (gst_mpegtsmux_set_property);
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gobject_class->get_property = GST_DEBUG_FUNCPTR (gst_mpegtsmux_get_property);
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gobject_class->dispose = mpegtsmux_dispose;
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gstelement_class->request_new_pad = mpegtsmux_request_new_pad;
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gstelement_class->release_pad = mpegtsmux_release_pad;
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gstelement_class->change_state = mpegtsmux_change_state;
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PROG_MAP,
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g_param_spec_boxed ("prog-map", "Program map",
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"A GstStructure specifies the mapping from elementary streams to programs",
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GST_TYPE_STRUCTURE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_M2TS_MODE,
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g_param_spec_boolean ("m2ts-mode", "M2TS(192 bytes) Mode",
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"Set to TRUE to output Blu-Ray disc format with 192 byte packets. "
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"FALSE for standard TS format with 188 byte packets.",
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MPEGTSMUX_DEFAULT_M2TS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PAT_INTERVAL,
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g_param_spec_uint ("pat-interval", "PAT interval",
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"Set the interval (in ticks of the 90kHz clock) for writing out the PAT table",
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1, G_MAXUINT, TSMUX_DEFAULT_PAT_INTERVAL,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PMT_INTERVAL,
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g_param_spec_uint ("pmt-interval", "PMT interval",
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"Set the interval (in ticks of the 90kHz clock) for writing out the PMT table",
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1, G_MAXUINT, TSMUX_DEFAULT_PMT_INTERVAL,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_ALIGNMENT,
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g_param_spec_int ("alignment", "packet alignment",
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"Number of packets per buffer (padded with dummy packets on EOS) "
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"(-1 = auto, 0 = all available packets)",
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-1, G_MAXINT, MPEGTSMUX_DEFAULT_ALIGNMENT,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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mpegtsmux_init (MpegTsMux * mux, MpegTsMuxClass * g_class)
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{
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mux->srcpad =
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gst_pad_new_from_static_template (&mpegtsmux_src_factory, "src");
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gst_pad_use_fixed_caps (mux->srcpad);
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gst_pad_set_event_function (mux->srcpad, mpegtsmux_src_event);
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gst_element_add_pad (GST_ELEMENT (mux), mux->srcpad);
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mux->collect = gst_collect_pads2_new ();
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gst_collect_pads2_set_function (mux->collect,
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(GstCollectPads2Function) GST_DEBUG_FUNCPTR (mpegtsmux_collected), mux);
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gst_collect_pads2_set_event_function (mux->collect,
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(GstCollectPads2EventFunction) GST_DEBUG_FUNCPTR (mpegtsmux_sink_event),
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mux);
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mux->adapter = gst_adapter_new ();
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mux->out_adapter = gst_adapter_new ();
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/* properties */
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mux->m2ts_mode = MPEGTSMUX_DEFAULT_M2TS;
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mux->pat_interval = TSMUX_DEFAULT_PAT_INTERVAL;
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mux->pmt_interval = TSMUX_DEFAULT_PMT_INTERVAL;
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mux->prog_map = NULL;
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mux->alignment = MPEGTSMUX_DEFAULT_ALIGNMENT;
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/* initial state */
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mpegtsmux_reset (mux, TRUE);
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}
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static void
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mpegtsmux_pad_reset (MpegTsPadData * pad_data)
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{
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pad_data->pid = 0;
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pad_data->last_ts = GST_CLOCK_TIME_NONE;
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pad_data->cur_ts = GST_CLOCK_TIME_NONE;
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pad_data->prog_id = -1;
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pad_data->eos = FALSE;
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if (pad_data->free_func)
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pad_data->free_func (pad_data->prepare_data);
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pad_data->prepare_data = NULL;
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pad_data->prepare_func = NULL;
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pad_data->free_func = NULL;
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if (pad_data->queued_buf)
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gst_buffer_replace (&pad_data->queued_buf, NULL);
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if (pad_data->codec_data)
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gst_buffer_replace (&pad_data->codec_data, NULL);
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/* reference owned elsewhere */
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pad_data->stream = NULL;
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pad_data->prog = NULL;
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}
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static void
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mpegtsmux_reset (MpegTsMux * mux, gboolean alloc)
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{
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GSList *walk;
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mux->first = TRUE;
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mux->last_flow_ret = GST_FLOW_OK;
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mux->previous_pcr = -1;
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mux->pcr_rate_num = mux->pcr_rate_den = 1;
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mux->last_ts = 0;
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mux->is_delta = TRUE;
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mux->streamheader = NULL;
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mux->streamheader_sent = FALSE;
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mux->force_key_unit_event = NULL;
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mux->pending_key_unit_ts = GST_CLOCK_TIME_NONE;
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gst_adapter_clear (mux->adapter);
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gst_adapter_clear (mux->out_adapter);
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if (mux->tsmux) {
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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->streamheader) {
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GstBuffer *buf;
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GList *sh;
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sh = mux->streamheader;
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while (sh) {
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buf = sh->data;
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gst_buffer_unref (buf);
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sh = g_list_next (sh);
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}
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g_list_free (mux->streamheader);
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mux->streamheader = NULL;
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}
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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_COLLECT_PADS2_STREAM_LOCK (mux->collect);
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for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (walk))
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mpegtsmux_pad_reset ((MpegTsPadData *) walk->data);
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GST_COLLECT_PADS2_STREAM_UNLOCK (mux->collect);
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if (alloc) {
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mux->tsmux = tsmux_new ();
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tsmux_set_write_func (mux->tsmux, new_packet_cb, mux);
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}
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}
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static void
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mpegtsmux_dispose (GObject * object)
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{
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MpegTsMux *mux = GST_MPEG_TSMUX (object);
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mpegtsmux_reset (mux, FALSE);
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if (mux->adapter) {
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g_object_unref (mux->adapter);
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mux->adapter = NULL;
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}
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if (mux->out_adapter) {
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g_object_unref (mux->out_adapter);
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mux->out_adapter = NULL;
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}
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if (mux->collect) {
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gst_object_unref (mux->collect);
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mux->collect = NULL;
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}
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if (mux->prog_map) {
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gst_structure_free (mux->prog_map);
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mux->prog_map = NULL;
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}
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GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
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}
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static void
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gst_mpegtsmux_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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MpegTsMux *mux = GST_MPEG_TSMUX (object);
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GSList *walk;
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switch (prop_id) {
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case ARG_M2TS_MODE:
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/*set incase if the output stream need to be of 192 bytes */
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mux->m2ts_mode = g_value_get_boolean (value);
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break;
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case ARG_PROG_MAP:
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{
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const GstStructure *s = gst_value_get_structure (value);
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if (mux->prog_map) {
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gst_structure_free (mux->prog_map);
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}
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if (s)
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mux->prog_map = gst_structure_copy (s);
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else
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mux->prog_map = NULL;
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break;
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}
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case ARG_PAT_INTERVAL:
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mux->pat_interval = g_value_get_uint (value);
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if (mux->tsmux)
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tsmux_set_pat_interval (mux->tsmux, mux->pat_interval);
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break;
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case ARG_PMT_INTERVAL:
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walk = mux->collect->data;
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mux->pmt_interval = g_value_get_uint (value);
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while (walk) {
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MpegTsPadData *ts_data = (MpegTsPadData *) walk->data;
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tsmux_set_pmt_interval (ts_data->prog, mux->pmt_interval);
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walk = g_slist_next (walk);
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}
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break;
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case ARG_ALIGNMENT:
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mux->alignment = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_mpegtsmux_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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MpegTsMux *mux = GST_MPEG_TSMUX (object);
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switch (prop_id) {
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case ARG_M2TS_MODE:
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g_value_set_boolean (value, mux->m2ts_mode);
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break;
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case ARG_PROG_MAP:
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gst_value_set_structure (value, mux->prog_map);
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break;
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case ARG_PAT_INTERVAL:
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g_value_set_uint (value, mux->pat_interval);
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break;
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case ARG_PMT_INTERVAL:
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g_value_set_uint (value, mux->pmt_interval);
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break;
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case ARG_ALIGNMENT:
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g_value_set_int (value, mux->alignment);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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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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{
|
|
GstBuffer *buf = (GstBuffer *) user_data;
|
|
gst_buffer_unref (buf);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegtsmux_create_stream (MpegTsMux * mux, MpegTsPadData * ts_data)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_ERROR;
|
|
GstCaps *caps;
|
|
GstStructure *s;
|
|
GstPad *pad;
|
|
TsMuxStreamType st = TSMUX_ST_RESERVED;
|
|
const gchar *mt;
|
|
const GValue *value = NULL;
|
|
GstBuffer *codec_data = NULL;
|
|
|
|
pad = ts_data->collect.pad;
|
|
caps = gst_pad_get_negotiated_caps (pad);
|
|
if (caps == NULL)
|
|
goto not_negotiated;
|
|
|
|
GST_DEBUG_OBJECT (pad, "Creating stream with PID 0x%04x for caps %"
|
|
GST_PTR_FORMAT, caps);
|
|
|
|
s = gst_caps_get_structure (caps, 0);
|
|
g_return_val_if_fail (s != NULL, FALSE);
|
|
|
|
mt = gst_structure_get_name (s);
|
|
value = gst_structure_get_value (s, "codec_data");
|
|
if (value != NULL)
|
|
codec_data = gst_value_get_buffer (value);
|
|
|
|
if (strcmp (mt, "video/x-dirac") == 0) {
|
|
st = TSMUX_ST_VIDEO_DIRAC;
|
|
} else if (strcmp (mt, "audio/x-ac3") == 0) {
|
|
st = TSMUX_ST_PS_AUDIO_AC3;
|
|
} else if (strcmp (mt, "audio/x-dts") == 0) {
|
|
st = TSMUX_ST_PS_AUDIO_DTS;
|
|
} else if (strcmp (mt, "audio/x-lpcm") == 0) {
|
|
st = TSMUX_ST_PS_AUDIO_LPCM;
|
|
} else if (strcmp (mt, "video/x-h264") == 0) {
|
|
st = TSMUX_ST_VIDEO_H264;
|
|
/* Codec data contains SPS/PPS which need to go in stream for valid ES */
|
|
if (codec_data) {
|
|
GST_DEBUG_OBJECT (pad, "we have additional codec data (%d bytes)",
|
|
GST_BUFFER_SIZE (codec_data));
|
|
ts_data->codec_data = gst_buffer_ref (codec_data);
|
|
ts_data->prepare_func = mpegtsmux_prepare_h264;
|
|
ts_data->free_func = mpegtsmux_free_h264;
|
|
} else {
|
|
ts_data->codec_data = NULL;
|
|
}
|
|
} else if (strcmp (mt, "audio/mpeg") == 0) {
|
|
gint mpegversion;
|
|
|
|
if (!gst_structure_get_int (s, "mpegversion", &mpegversion)) {
|
|
GST_ERROR_OBJECT (pad, "caps missing mpegversion");
|
|
goto not_negotiated;
|
|
}
|
|
|
|
switch (mpegversion) {
|
|
case 1:
|
|
st = TSMUX_ST_AUDIO_MPEG1;
|
|
break;
|
|
case 2:
|
|
st = TSMUX_ST_AUDIO_MPEG2;
|
|
break;
|
|
case 4:
|
|
{
|
|
st = TSMUX_ST_AUDIO_AAC;
|
|
if (codec_data) {
|
|
GST_DEBUG_OBJECT (pad, "we have additional codec data (%d bytes)",
|
|
GST_BUFFER_SIZE (codec_data));
|
|
ts_data->codec_data = gst_buffer_ref (codec_data);
|
|
ts_data->prepare_func = mpegtsmux_prepare_aac;
|
|
} else {
|
|
ts_data->codec_data = NULL;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
GST_WARNING_OBJECT (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 (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 (pad, "unsupported mpegversion %d", mpegversion);
|
|
goto not_negotiated;
|
|
}
|
|
}
|
|
|
|
if (st != TSMUX_ST_RESERVED) {
|
|
ts_data->stream = tsmux_create_stream (mux->tsmux, st, ts_data->pid);
|
|
} else {
|
|
GST_DEBUG_OBJECT (pad, "Failed to determine stream type");
|
|
}
|
|
|
|
if (ts_data->stream != NULL) {
|
|
gst_structure_get_int (s, "rate", &ts_data->stream->audio_sampling);
|
|
gst_structure_get_int (s, "channels", &ts_data->stream->audio_channels);
|
|
gst_structure_get_int (s, "bitrate", &ts_data->stream->audio_bitrate);
|
|
|
|
tsmux_stream_set_buffer_release_func (ts_data->stream, release_buffer_cb);
|
|
tsmux_program_add_stream (ts_data->prog, ts_data->stream);
|
|
|
|
ret = GST_FLOW_OK;
|
|
}
|
|
|
|
gst_caps_unref (caps);
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
not_negotiated:
|
|
{
|
|
GST_DEBUG_OBJECT (pad, "Sink pad caps were not set before pushing");
|
|
if (caps)
|
|
gst_caps_unref (caps);
|
|
return GST_FLOW_NOT_NEGOTIATED;
|
|
}
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegtsmux_create_streams (MpegTsMux * mux)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GSList *walk = mux->collect->data;
|
|
|
|
/* Create the streams */
|
|
while (walk) {
|
|
GstCollectData2 *c_data = (GstCollectData2 *) walk->data;
|
|
MpegTsPadData *ts_data = (MpegTsPadData *) walk->data;
|
|
gchar *name = NULL;
|
|
|
|
walk = g_slist_next (walk);
|
|
|
|
if (ts_data->prog_id == -1) {
|
|
name = GST_PAD_NAME (c_data->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 || idx >= MAX_PROG_NUMBER) {
|
|
GST_DEBUG_OBJECT (mux, "Program number %d associate with pad %s out "
|
|
"of range (max = %d); DEFAULT_PROGRAM = %d is used instead",
|
|
idx, name, MAX_PROG_NUMBER, DEFAULT_PROG_ID);
|
|
idx = DEFAULT_PROG_ID;
|
|
}
|
|
ts_data->prog_id = idx;
|
|
} else {
|
|
ts_data->prog_id = DEFAULT_PROG_ID;
|
|
}
|
|
}
|
|
|
|
ts_data->prog = mux->programs[ts_data->prog_id];
|
|
if (ts_data->prog == NULL) {
|
|
ts_data->prog = tsmux_program_new (mux->tsmux);
|
|
if (ts_data->prog == NULL)
|
|
goto no_program;
|
|
tsmux_set_pmt_interval (ts_data->prog, mux->pmt_interval);
|
|
mux->programs[ts_data->prog_id] = ts_data->prog;
|
|
}
|
|
|
|
if (ts_data->stream == NULL) {
|
|
ret = mpegtsmux_create_stream (mux, ts_data);
|
|
if (ret != GST_FLOW_OK)
|
|
goto no_stream;
|
|
}
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
static MpegTsPadData *
|
|
mpegtsmux_choose_best_stream (MpegTsMux * mux)
|
|
{
|
|
MpegTsPadData *best = NULL;
|
|
GSList *walk;
|
|
|
|
for (walk = mux->collect->data; walk != NULL; walk = g_slist_next (walk)) {
|
|
GstCollectData2 *c_data = (GstCollectData2 *) walk->data;
|
|
MpegTsPadData *ts_data = (MpegTsPadData *) walk->data;
|
|
|
|
if (ts_data->eos == FALSE) {
|
|
if (ts_data->queued_buf == NULL) {
|
|
GstBuffer *buf;
|
|
|
|
ts_data->queued_buf = buf =
|
|
gst_collect_pads2_pop (mux->collect, c_data);
|
|
|
|
if (buf != NULL) {
|
|
if (ts_data->prepare_func) {
|
|
buf = ts_data->prepare_func (buf, ts_data, mux);
|
|
if (buf) { /* Take the prepared buffer instead */
|
|
gst_buffer_unref (ts_data->queued_buf);
|
|
ts_data->queued_buf = buf;
|
|
} else { /* If data preparation returned NULL, use unprepared one */
|
|
buf = ts_data->queued_buf;
|
|
}
|
|
}
|
|
if (GST_BUFFER_TIMESTAMP (buf) != GST_CLOCK_TIME_NONE) {
|
|
/* Ignore timestamps that go backward for now. FIXME: Handle all
|
|
* incoming PTS */
|
|
if (ts_data->last_ts == GST_CLOCK_TIME_NONE ||
|
|
ts_data->last_ts < GST_BUFFER_TIMESTAMP (buf)) {
|
|
ts_data->cur_ts = ts_data->last_ts =
|
|
gst_segment_to_running_time (&c_data->segment,
|
|
GST_FORMAT_TIME, GST_BUFFER_TIMESTAMP (buf));
|
|
} else {
|
|
GST_DEBUG_OBJECT (mux, "Ignoring PTS that has gone backward");
|
|
}
|
|
} else
|
|
ts_data->cur_ts = GST_CLOCK_TIME_NONE;
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pulled buffer with ts %" GST_TIME_FORMAT
|
|
" (uncorrected ts %" GST_TIME_FORMAT " %" G_GUINT64_FORMAT
|
|
") for PID 0x%04x",
|
|
GST_TIME_ARGS (ts_data->cur_ts),
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
|
|
GST_BUFFER_TIMESTAMP (buf), ts_data->pid);
|
|
|
|
/* Choose a stream we've never seen a timestamp for to ensure
|
|
* we push enough buffers from it to reach a timestamp */
|
|
if (ts_data->last_ts == GST_CLOCK_TIME_NONE) {
|
|
best = ts_data;
|
|
}
|
|
} else {
|
|
ts_data->eos = TRUE;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* If we don't yet have a best pad, take this one, otherwise take
|
|
* whichever has the oldest timestamp */
|
|
if (best != NULL) {
|
|
if (ts_data->last_ts != GST_CLOCK_TIME_NONE &&
|
|
best->last_ts != GST_CLOCK_TIME_NONE &&
|
|
ts_data->last_ts < best->last_ts) {
|
|
best = ts_data;
|
|
}
|
|
} else {
|
|
best = ts_data;
|
|
}
|
|
}
|
|
}
|
|
|
|
return best;
|
|
}
|
|
|
|
#define COLLECT_DATA_PAD(collect_data) (((GstCollectData2 *)(collect_data))->pad)
|
|
|
|
static gboolean
|
|
mpegtsmux_sink_event (GstCollectPads2 * pads, GstCollectData2 * data,
|
|
GstEvent * event, gpointer user_data)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (user_data);
|
|
gboolean res = FALSE;
|
|
GstPad *pad;
|
|
|
|
pad = data->pad;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CUSTOM_DOWNSTREAM:
|
|
{
|
|
GstClockTime timestamp, stream_time, running_time;
|
|
gboolean all_headers;
|
|
guint count;
|
|
|
|
if (!gst_video_event_is_force_key_unit (event))
|
|
goto out;
|
|
|
|
res = TRUE;
|
|
|
|
gst_video_event_parse_downstream_force_key_unit (event,
|
|
×tamp, &stream_time, &running_time, &all_headers, &count);
|
|
GST_INFO_OBJECT (mux, "have downstream force-key-unit event on pad %s, "
|
|
"seqnum %d, running-time %" GST_TIME_FORMAT " count %d",
|
|
gst_pad_get_name (pad), 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;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
out:
|
|
if (res)
|
|
gst_event_unref (event);
|
|
|
|
return res;
|
|
}
|
|
|
|
static gboolean
|
|
mpegtsmux_src_event (GstPad * pad, GstEvent * event)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (gst_pad_get_parent (pad));
|
|
gboolean res = TRUE, forward = TRUE;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CUSTOM_UPSTREAM:
|
|
{
|
|
GstIterator *iter;
|
|
GstIteratorResult iter_ret;
|
|
GstPad *sinkpad;
|
|
GstClockTime running_time;
|
|
gboolean all_headers, done;
|
|
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));
|
|
done = FALSE;
|
|
while (!done) {
|
|
gboolean res = FALSE, tmp;
|
|
iter_ret = gst_iterator_next (iter, (gpointer *) & sinkpad);
|
|
|
|
switch (iter_ret) {
|
|
case GST_ITERATOR_DONE:
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_OK:
|
|
GST_INFO_OBJECT (mux, "forwarding to %s",
|
|
gst_pad_get_name (sinkpad));
|
|
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;
|
|
gst_object_unref (sinkpad);
|
|
break;
|
|
case GST_ITERATOR_ERROR:
|
|
done = TRUE;
|
|
break;
|
|
case GST_ITERATOR_RESYNC:
|
|
break;
|
|
}
|
|
}
|
|
gst_iterator_free (iter);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (forward)
|
|
res = gst_pad_event_default (pad, event);
|
|
else
|
|
gst_event_unref (event);
|
|
|
|
gst_object_unref (mux);
|
|
return res;
|
|
}
|
|
|
|
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_return_val_if_fail (pending_event != NULL, NULL);
|
|
g_return_val_if_fail (segment != NULL, 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 = gst_segment_to_running_time (segment,
|
|
GST_FORMAT_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);
|
|
|
|
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;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegtsmux_collected (GstCollectPads2 * pads, MpegTsMux * mux)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
MpegTsPadData *best = NULL;
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pads collected");
|
|
|
|
if (G_UNLIKELY (mux->first)) {
|
|
ret = mpegtsmux_create_streams (mux);
|
|
if (G_UNLIKELY (ret != GST_FLOW_OK))
|
|
return ret;
|
|
|
|
mpegtsdemux_prepare_srcpad (mux);
|
|
|
|
mux->first = FALSE;
|
|
}
|
|
|
|
best = mpegtsmux_choose_best_stream (mux);
|
|
|
|
if (best != NULL) {
|
|
TsMuxProgram *prog = best->prog;
|
|
GstBuffer *buf = best->queued_buf;
|
|
gint64 pts = -1;
|
|
gboolean delta = TRUE;
|
|
|
|
if (prog == NULL)
|
|
goto no_program;
|
|
|
|
g_assert (buf != NULL);
|
|
best->queued_buf = NULL;
|
|
|
|
if (mux->force_key_unit_event != NULL && best->stream->is_video_stream) {
|
|
GstEvent *event;
|
|
|
|
event = check_pending_key_unit_event (mux->force_key_unit_event,
|
|
&best->collect.segment, GST_BUFFER_TIMESTAMP (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 (mux->srcpad, event);
|
|
|
|
/* output PAT */
|
|
mux->tsmux->last_pat_ts = -1;
|
|
|
|
/* output PMT for each program */
|
|
for (cur = mux->tsmux->programs; cur; cur = cur->next) {
|
|
TsMuxProgram *program = (TsMuxProgram *) cur->data;
|
|
|
|
program->last_pmt_ts = -1;
|
|
}
|
|
tsmux_program_set_pcr_stream (prog, NULL);
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (prog->pcr_stream == NULL)) {
|
|
/* Take the first data stream for the PCR */
|
|
GST_DEBUG_OBJECT (COLLECT_DATA_PAD (best),
|
|
"Use stream (pid=%d) from pad as PCR for program (prog_id = %d)",
|
|
MPEG_TS_PAD_DATA (best)->pid, MPEG_TS_PAD_DATA (best)->prog_id);
|
|
|
|
/* Set the chosen PCR stream */
|
|
tsmux_program_set_pcr_stream (prog, best->stream);
|
|
}
|
|
|
|
if (best->stream->is_video_stream)
|
|
delta = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
|
|
GST_DEBUG_OBJECT (mux, "delta: %d", delta);
|
|
|
|
GST_DEBUG_OBJECT (COLLECT_DATA_PAD (best),
|
|
"Chose stream for output (PID: 0x%04x)", best->pid);
|
|
|
|
if (GST_CLOCK_TIME_IS_VALID (best->cur_ts)) {
|
|
pts = GSTTIME_TO_MPEGTIME (best->cur_ts);
|
|
GST_DEBUG_OBJECT (mux, "Buffer has TS %" GST_TIME_FORMAT " pts %"
|
|
G_GINT64_FORMAT, GST_TIME_ARGS (best->cur_ts), pts);
|
|
}
|
|
|
|
tsmux_stream_add_data (best->stream, GST_BUFFER_DATA (buf),
|
|
GST_BUFFER_SIZE (buf), buf, pts, -1, !delta);
|
|
|
|
/* outgoing ts follows ts of PCR program stream */
|
|
if (prog->pcr_stream == best->stream) {
|
|
mux->last_ts = best->last_ts;
|
|
}
|
|
|
|
mux->is_delta = delta;
|
|
mux->last_size = GST_BUFFER_SIZE (buf);
|
|
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;
|
|
}
|
|
}
|
|
/* flush packet cache */
|
|
mpegtsmux_push_packets (mux, FALSE);
|
|
} else {
|
|
/* EOS */
|
|
/* drain some possibly cached data */
|
|
new_packet_m2ts (mux, NULL, -1);
|
|
mpegtsmux_push_packets (mux, TRUE);
|
|
gst_pad_push_event (mux->srcpad, gst_event_new_eos ());
|
|
}
|
|
|
|
return ret;
|
|
|
|
/* ERRORS */
|
|
write_fail:
|
|
{
|
|
return mux->last_flow_ret;
|
|
}
|
|
no_program:
|
|
{
|
|
GST_ELEMENT_ERROR (mux, STREAM, MUX,
|
|
("Stream on pad %" GST_PTR_FORMAT
|
|
" is not associated with any program", COLLECT_DATA_PAD (best)),
|
|
(NULL));
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
}
|
|
|
|
static GstPad *
|
|
mpegtsmux_request_new_pad (GstElement * element,
|
|
GstPadTemplate * templ, const gchar * name)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (element);
|
|
gint pid = -1;
|
|
gchar *pad_name = NULL;
|
|
GstPad *pad = NULL;
|
|
MpegTsPadData *pad_data = NULL;
|
|
|
|
if (name != NULL && sscanf (name, "sink_%d", &pid) == 1) {
|
|
if (tsmux_find_stream (mux->tsmux, pid))
|
|
goto stream_exists;
|
|
} else {
|
|
pid = tsmux_get_new_pid (mux->tsmux);
|
|
}
|
|
|
|
pad_name = g_strdup_printf ("sink_%d", pid);
|
|
pad = gst_pad_new_from_template (templ, pad_name);
|
|
g_free (pad_name);
|
|
|
|
pad_data = (MpegTsPadData *)
|
|
gst_collect_pads2_add_pad_full (mux->collect, pad, sizeof (MpegTsPadData),
|
|
(GstCollectData2DestroyNotify) (mpegtsmux_pad_reset), TRUE);
|
|
if (pad_data == NULL)
|
|
goto pad_failure;
|
|
|
|
mpegtsmux_pad_reset (pad_data);
|
|
pad_data->pid = pid;
|
|
|
|
if (G_UNLIKELY (!gst_element_add_pad (element, pad)))
|
|
goto could_not_add;
|
|
|
|
return pad;
|
|
|
|
/* ERRORS */
|
|
stream_exists:
|
|
{
|
|
GST_ELEMENT_ERROR (element, STREAM, MUX, ("Duplicate PID requested"),
|
|
(NULL));
|
|
return NULL;
|
|
}
|
|
could_not_add:
|
|
{
|
|
GST_ELEMENT_ERROR (element, STREAM, FAILED,
|
|
("Internal data stream error."), ("Could not add pad to element"));
|
|
gst_collect_pads2_remove_pad (mux->collect, pad);
|
|
gst_object_unref (pad);
|
|
return NULL;
|
|
}
|
|
pad_failure:
|
|
{
|
|
GST_ELEMENT_ERROR (element, STREAM, FAILED,
|
|
("Internal data stream error."), ("Could not add pad to collectpads"));
|
|
gst_object_unref (pad);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
mpegtsmux_release_pad (GstElement * element, GstPad * pad)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (element);
|
|
|
|
GST_DEBUG_OBJECT (mux, "Pad %" GST_PTR_FORMAT " being released", pad);
|
|
|
|
if (mux->collect) {
|
|
gst_collect_pads2_remove_pad (mux->collect, pad);
|
|
}
|
|
|
|
/* chain up */
|
|
gst_element_remove_pad (element, pad);
|
|
}
|
|
|
|
static void
|
|
new_packet_common_init (MpegTsMux * mux, GstBuffer * buf, guint8 * data,
|
|
guint len)
|
|
{
|
|
/* Packets should be at least 188 bytes, but check anyway */
|
|
g_return_if_fail (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);
|
|
memcpy (GST_BUFFER_DATA (hbuf), data, len);
|
|
} else {
|
|
hbuf = gst_buffer_copy (buf);
|
|
}
|
|
mux->streamheader = g_list_append (mux->streamheader, hbuf);
|
|
} else if (mux->streamheader) {
|
|
mpegtsdemux_set_header_on_caps (mux);
|
|
mux->streamheader_sent = TRUE;
|
|
}
|
|
}
|
|
|
|
if (buf) {
|
|
/* Set the caps on the buffer only after possibly setting the stream headers
|
|
* into the pad caps above */
|
|
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
|
|
|
|
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
|
|
mpegtsmux_push_packets (MpegTsMux * mux, gboolean force)
|
|
{
|
|
gint align = mux->alignment;
|
|
gint av, packet_size;
|
|
GstBuffer *buf;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstClockTime ts;
|
|
|
|
if (mux->m2ts_mode) {
|
|
packet_size = M2TS_PACKET_LENGTH;
|
|
if (align < 0)
|
|
align = 32;
|
|
} else {
|
|
packet_size = NORMAL_TS_PACKET_LENGTH;
|
|
if (align < 0)
|
|
align = 0;
|
|
}
|
|
|
|
av = gst_adapter_available (mux->out_adapter);
|
|
GST_LOG_OBJECT (mux, "align %d, av %d", align, av);
|
|
|
|
if (!align)
|
|
align = av;
|
|
else
|
|
align *= packet_size;
|
|
|
|
GST_LOG_OBJECT (mux, "aligning to %d bytes", align);
|
|
if (G_LIKELY ((align <= av) && av)) {
|
|
GST_LOG_OBJECT (mux, "pushing %d aligned bytes", av - (av % align));
|
|
ts = gst_adapter_prev_timestamp (mux->out_adapter, NULL);
|
|
buf = gst_adapter_take_buffer (mux->out_adapter, av - (av % align));
|
|
g_assert (buf);
|
|
GST_BUFFER_TIMESTAMP (buf) = ts;
|
|
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
|
|
ret = gst_pad_push (mux->srcpad, buf);
|
|
av = av % align;
|
|
}
|
|
|
|
if (av && force) {
|
|
guint8 *data;
|
|
guint32 header;
|
|
gint dummy;
|
|
|
|
GST_LOG_OBJECT (mux, "handling %d leftover bytes", av);
|
|
buf = gst_buffer_new_and_alloc (align);
|
|
ts = gst_adapter_prev_timestamp (mux->out_adapter, NULL);
|
|
gst_adapter_copy (mux->out_adapter, GST_BUFFER_DATA (buf), 0, av);
|
|
gst_adapter_clear (mux->out_adapter);
|
|
GST_BUFFER_TIMESTAMP (buf) = ts;
|
|
gst_buffer_set_caps (buf, GST_PAD_CAPS (mux->srcpad));
|
|
|
|
data = GST_BUFFER_DATA (buf) + av;
|
|
header = GST_READ_UINT32_BE (data - packet_size);
|
|
|
|
dummy = (GST_BUFFER_SIZE (buf) - av) / packet_size;
|
|
GST_LOG_OBJECT (mux, "adding %d null packets", dummy);
|
|
|
|
for (; dummy > 0; dummy--) {
|
|
gint offset;
|
|
|
|
if (packet_size > NORMAL_TS_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, NORMAL_TS_PACKET_LENGTH - 4);
|
|
data += packet_size;
|
|
}
|
|
|
|
ret = gst_pad_push (mux->srcpad, buf);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mpegtsmux_collect_packet (MpegTsMux * mux, GstBuffer * buf)
|
|
{
|
|
GST_LOG_OBJECT (mux, "collecting packet size %d", GST_BUFFER_SIZE (buf));
|
|
gst_adapter_push (mux->out_adapter, buf);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static gboolean
|
|
new_packet_m2ts (MpegTsMux * mux, GstBuffer * buf, gint64 new_pcr)
|
|
{
|
|
GstBuffer *out_buf;
|
|
int chunk_bytes;
|
|
|
|
GST_LOG_OBJECT (mux, "Have buffer %p with new_pcr=%" G_GINT64_FORMAT,
|
|
buf, new_pcr);
|
|
|
|
chunk_bytes = gst_adapter_available (mux->adapter);
|
|
|
|
if (G_LIKELY (buf)) {
|
|
if (new_pcr < 0) {
|
|
/* If there is no pcr in current ts packet then just add the packet
|
|
to the adapter for later output when we see a PCR */
|
|
GST_LOG_OBJECT (mux, "Accumulating non-PCR packet");
|
|
gst_adapter_push (mux->adapter, buf);
|
|
goto exit;
|
|
}
|
|
|
|
/* no first interpolation point yet, then this is the one,
|
|
* otherwise it is the second interpolation point */
|
|
if (mux->previous_pcr < 0 && chunk_bytes) {
|
|
mux->previous_pcr = new_pcr;
|
|
mux->previous_offset = chunk_bytes;
|
|
GST_LOG_OBJECT (mux, "Accumulating non-PCR packet");
|
|
gst_adapter_push (mux->adapter, buf);
|
|
goto exit;
|
|
}
|
|
} else {
|
|
g_assert (new_pcr == -1);
|
|
}
|
|
|
|
/* interpolate if needed, and 2 points available */
|
|
if (chunk_bytes && (new_pcr != mux->previous_pcr)) {
|
|
gint64 offset = 0;
|
|
|
|
GST_LOG_OBJECT (mux, "Processing pending packets; "
|
|
"previous pcr %" G_GINT64_FORMAT ", previous offset %d, "
|
|
"current pcr %" G_GINT64_FORMAT ", current offset %d",
|
|
mux->previous_pcr, (gint) mux->previous_offset,
|
|
new_pcr, (gint) chunk_bytes);
|
|
|
|
g_assert (chunk_bytes > mux->previous_offset);
|
|
/* if draining, use previous rate */
|
|
if (G_LIKELY (new_pcr > 0)) {
|
|
mux->pcr_rate_num = new_pcr - mux->previous_pcr;
|
|
mux->pcr_rate_den = chunk_bytes - mux->previous_offset;
|
|
}
|
|
|
|
while (offset < chunk_bytes) {
|
|
guint64 cur_pcr, ts;
|
|
|
|
/* Loop, pulling packets of the adapter, updating their 4 byte
|
|
* timestamp header and pushing */
|
|
|
|
/* interpolate PCR */
|
|
if (G_LIKELY (offset >= mux->previous_offset))
|
|
cur_pcr = mux->previous_pcr +
|
|
gst_util_uint64_scale (offset - mux->previous_offset,
|
|
mux->pcr_rate_num, mux->pcr_rate_den);
|
|
else
|
|
cur_pcr = mux->previous_pcr -
|
|
gst_util_uint64_scale (mux->previous_offset - offset,
|
|
mux->pcr_rate_num, mux->pcr_rate_den);
|
|
|
|
ts = gst_adapter_prev_timestamp (mux->adapter, NULL);
|
|
out_buf = gst_adapter_take_buffer (mux->adapter, M2TS_PACKET_LENGTH);
|
|
g_assert (out_buf);
|
|
offset += M2TS_PACKET_LENGTH;
|
|
|
|
gst_buffer_set_caps (out_buf, GST_PAD_CAPS (mux->srcpad));
|
|
GST_BUFFER_TIMESTAMP (out_buf) = ts;
|
|
|
|
/* The header is the bottom 30 bits of the PCR, apparently not
|
|
* encoded into base + ext as in the packets themselves */
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (out_buf), cur_pcr & 0x3FFFFFFF);
|
|
|
|
GST_LOG_OBJECT (mux, "Outputting a packet of length %d PCR %"
|
|
G_GUINT64_FORMAT, M2TS_PACKET_LENGTH, cur_pcr);
|
|
mpegtsmux_collect_packet (mux, out_buf);
|
|
}
|
|
}
|
|
|
|
if (G_UNLIKELY (!buf))
|
|
goto exit;
|
|
|
|
/* Finally, output the passed in packet */
|
|
/* Only write the bottom 30 bits of the PCR */
|
|
GST_WRITE_UINT32_BE (GST_BUFFER_DATA (buf), new_pcr & 0x3FFFFFFF);
|
|
|
|
GST_LOG_OBJECT (mux, "Outputting a packet of length %d PCR %"
|
|
G_GUINT64_FORMAT, M2TS_PACKET_LENGTH, new_pcr);
|
|
mpegtsmux_collect_packet (mux, buf);
|
|
|
|
if (new_pcr != mux->previous_pcr) {
|
|
mux->previous_pcr = new_pcr;
|
|
mux->previous_offset = -M2TS_PACKET_LENGTH;
|
|
}
|
|
|
|
exit:
|
|
return TRUE;
|
|
}
|
|
|
|
/* Called when the TsMux has prepared a packet for output. Return FALSE
|
|
* on error */
|
|
static gboolean
|
|
new_packet_cb (guint8 * data, guint len, void *user_data, gint64 new_pcr)
|
|
{
|
|
MpegTsMux *mux = (MpegTsMux *) user_data;
|
|
gint offset = 0;
|
|
GstBuffer *buf;
|
|
|
|
if (mux->m2ts_mode == TRUE)
|
|
offset = 4;
|
|
|
|
buf = gst_buffer_new_and_alloc (NORMAL_TS_PACKET_LENGTH + offset);
|
|
GST_BUFFER_TIMESTAMP (buf) = mux->last_ts;
|
|
memcpy (GST_BUFFER_DATA (buf) + offset, data, len);
|
|
/* do common init (flags and streamheaders) */
|
|
new_packet_common_init (mux, buf, data, len);
|
|
|
|
if (offset)
|
|
return new_packet_m2ts (mux, buf, new_pcr);
|
|
else
|
|
mpegtsmux_collect_packet (mux, buf);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
mpegtsdemux_set_header_on_caps (MpegTsMux * mux)
|
|
{
|
|
GstBuffer *buf;
|
|
GstStructure *structure;
|
|
GValue array = { 0 };
|
|
GValue value = { 0 };
|
|
GstCaps *caps;
|
|
GList *sh;
|
|
|
|
caps = gst_caps_copy (GST_PAD_CAPS (mux->srcpad));
|
|
structure = gst_caps_get_structure (caps, 0);
|
|
|
|
g_value_init (&array, GST_TYPE_ARRAY);
|
|
|
|
sh = mux->streamheader;
|
|
while (sh) {
|
|
buf = sh->data;
|
|
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_IN_CAPS);
|
|
g_value_init (&value, GST_TYPE_BUFFER);
|
|
gst_value_take_buffer (&value, buf);
|
|
gst_value_array_append_value (&array, &value);
|
|
g_value_unset (&value);
|
|
sh = g_list_next (sh);
|
|
}
|
|
|
|
g_list_free (mux->streamheader);
|
|
mux->streamheader = NULL;
|
|
|
|
gst_structure_set_value (structure, "streamheader", &array);
|
|
gst_pad_set_caps (mux->srcpad, caps);
|
|
g_value_unset (&array);
|
|
gst_caps_unref (caps);
|
|
}
|
|
|
|
static void
|
|
mpegtsdemux_prepare_srcpad (MpegTsMux * mux)
|
|
{
|
|
/* we are not going to seek */
|
|
GstEvent *new_seg =
|
|
gst_event_new_new_segment (FALSE, 1.0, GST_FORMAT_TIME, 0, -1, 0);
|
|
GstCaps *caps = gst_caps_new_simple ("video/mpegts",
|
|
"systemstream", G_TYPE_BOOLEAN, TRUE,
|
|
"packetsize", G_TYPE_INT,
|
|
(mux->m2ts_mode ? M2TS_PACKET_LENGTH : NORMAL_TS_PACKET_LENGTH),
|
|
NULL);
|
|
|
|
/* Set caps on src pad from our template and push new segment */
|
|
gst_pad_set_caps (mux->srcpad, caps);
|
|
gst_caps_unref (caps);
|
|
|
|
if (!gst_pad_push_event (mux->srcpad, new_seg)) {
|
|
GST_WARNING_OBJECT (mux, "New segment event was not handled downstream");
|
|
}
|
|
}
|
|
|
|
static GstStateChangeReturn
|
|
mpegtsmux_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
MpegTsMux *mux = GST_MPEG_TSMUX (element);
|
|
GstStateChangeReturn ret;
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
gst_collect_pads2_start (mux->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
gst_collect_pads2_stop (mux->collect);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
break;
|
|
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
mpegtsmux_reset (mux, TRUE);
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
plugin_init (GstPlugin * plugin)
|
|
{
|
|
if (!gst_element_register (plugin, "mpegtsmux", GST_RANK_PRIMARY,
|
|
mpegtsmux_get_type ()))
|
|
return FALSE;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (mpegtsmux_debug, "mpegtsmux", 0,
|
|
"MPEG Transport Stream muxer");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, GST_VERSION_MINOR,
|
|
"mpegtsmux", "MPEG-TS muxer",
|
|
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN);
|