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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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d7ab75abb8
The current code just uses table id, subtable extension and version number to check if the section has been seen before. However, this comparison is not sufficient, causing actually new tables being dismissed. Fixes bug #614479.
154 lines
4.7 KiB
C
154 lines
4.7 KiB
C
/*
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* mpegtspacketizer.h -
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* Copyright (C) 2007 Alessandro Decina
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*
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* Authors:
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* Alessandro Decina <alessandro@nnva.org>
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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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#ifndef GST_MPEGTS_PACKETIZER_H
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#define GST_MPEGTS_PACKETIZER_H
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#include <gst/gst.h>
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#include <gst/base/gstadapter.h>
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#include <glib.h>
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#define MPEGTS_NORMAL_PACKETSIZE 188
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#define MPEGTS_M2TS_PACKETSIZE 192
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#define MPEGTS_DVB_ASI_PACKETSIZE 204
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#define MPEGTS_ATSC_PACKETSIZE 208
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#define MPEGTS_MIN_PACKETSIZE MPEGTS_NORMAL_PACKETSIZE
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#define MPEGTS_MAX_PACKETSIZE MPEGTS_ATSC_PACKETSIZE
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G_BEGIN_DECLS
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#define GST_TYPE_MPEGTS_PACKETIZER \
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(mpegts_packetizer_get_type())
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#define GST_MPEGTS_PACKETIZER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MPEGTS_PACKETIZER,MpegTSPacketizer))
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#define GST_MPEGTS_PACKETIZER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MPEGTS_PACKETIZER,MpegTSPacketizerClass))
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#define GST_IS_MPEGTS_PACKETIZER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MPEGTS_PACKETIZER))
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#define GST_IS_MPEGTS_PACKETIZER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MPEGTS_PACKETIZER))
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typedef struct _MpegTSPacketizer MpegTSPacketizer;
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typedef struct _MpegTSPacketizerClass MpegTSPacketizerClass;
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typedef struct
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{
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guint continuity_counter;
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GstAdapter *section_adapter;
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guint8 section_table_id;
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guint section_length;
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GSList *subtables;
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} MpegTSPacketizerStream;
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struct _MpegTSPacketizer {
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GObject object;
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GstAdapter *adapter;
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/* streams hashed by pid */
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MpegTSPacketizerStream **streams;
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gboolean disposed;
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gboolean know_packet_size;
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guint16 packet_size;
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GstCaps *caps;
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};
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struct _MpegTSPacketizerClass {
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GObjectClass object_class;
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};
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typedef struct
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{
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GstBuffer *buffer;
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gint16 pid;
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guint8 payload_unit_start_indicator;
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guint8 adaptation_field_control;
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guint8 continuity_counter;
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guint8 *payload;
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guint8 *data_start;
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guint8 *data_end;
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guint8 *data;
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} MpegTSPacketizerPacket;
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typedef struct
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{
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gboolean complete;
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GstBuffer *buffer;
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gint16 pid;
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guint8 table_id;
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guint16 subtable_extension;
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guint section_length;
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guint8 version_number;
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guint8 current_next_indicator;
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guint32 crc;
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} MpegTSPacketizerSection;
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typedef struct
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{
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guint8 table_id;
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/* the spec says sub_table_extension is the fourth and fifth byte of a
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* section when the section_syntax_indicator is set to a value of "1". If
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* section_syntax_indicator is 0, sub_table_extension will be set to 0 */
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guint16 subtable_extension;
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guint8 version_number;
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guint32 crc;
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} MpegTSPacketizerStreamSubtable;
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typedef enum {
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PACKET_BAD = FALSE,
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PACKET_OK = TRUE,
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PACKET_NEED_MORE
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} MpegTSPacketizerPacketReturn;
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GType mpegts_packetizer_get_type(void);
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MpegTSPacketizer *mpegts_packetizer_new (void);
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void mpegts_packetizer_clear (MpegTSPacketizer *packetizer);
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void mpegts_packetizer_push (MpegTSPacketizer *packetizer, GstBuffer *buffer);
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gboolean mpegts_packetizer_has_packets (MpegTSPacketizer *packetizer);
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MpegTSPacketizerPacketReturn mpegts_packetizer_next_packet (MpegTSPacketizer *packetizer,
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MpegTSPacketizerPacket *packet);
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void mpegts_packetizer_clear_packet (MpegTSPacketizer *packetizer,
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MpegTSPacketizerPacket *packet);
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void mpegts_packetizer_remove_stream(MpegTSPacketizer *packetizer,
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gint16 pid);
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gboolean mpegts_packetizer_push_section (MpegTSPacketizer *packetzer,
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MpegTSPacketizerPacket *packet, MpegTSPacketizerSection *section);
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GstStructure *mpegts_packetizer_parse_pat (MpegTSPacketizer *packetizer,
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MpegTSPacketizerSection *section);
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GstStructure *mpegts_packetizer_parse_pmt (MpegTSPacketizer *packetizer,
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MpegTSPacketizerSection *section);
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GstStructure *mpegts_packetizer_parse_nit (MpegTSPacketizer *packetizer,
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MpegTSPacketizerSection *section);
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GstStructure *mpegts_packetizer_parse_sdt (MpegTSPacketizer *packetizer,
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MpegTSPacketizerSection *section);
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GstStructure *mpegts_packetizer_parse_eit (MpegTSPacketizer *packetizer,
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MpegTSPacketizerSection *section);
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G_END_DECLS
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#endif /* GST_MPEGTS_PACKETIZER_H */
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