mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 02:31:03 +00:00
92edd82c86
* Only mpeg-ts section packetization remains. * Improve code to detect duplicated sections as early as possible * Add FIXME for various issues that need fixing (but are not regressions) https://bugzilla.gnome.org/show_bug.cgi?id=702724
198 lines
7.7 KiB
C
198 lines
7.7 KiB
C
/*
|
|
* pesparse.h : MPEG PES parsing utility
|
|
* Copyright (C) 2011 Edward Hervey <bilboed@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
#ifndef __PES_PARSE_H__
|
|
#define __PES_PARSE_H__
|
|
|
|
#include <gst/gst.h>
|
|
#include "gstmpegdefs.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
|
|
/*
|
|
* PES stream_id assignments:
|
|
*
|
|
* 1011 1100 program_stream_map
|
|
* 1011 1101 private_stream_1
|
|
* 1011 1110 padding_stream
|
|
* 1011 1111 private_stream_2
|
|
* 110x xxxx ISO/IEC 13818-3 or ISO/IEC 11172-3 audio stream number x xxxx
|
|
* 1110 xxxx ITU-T Rec. H.262 | ISO/IEC 13818-2 or ISO/IEC 11172-2 video stream number xxxx
|
|
* 1111 0000 ECM_stream
|
|
* 1111 0001 EMM_stream
|
|
* 1111 0010 ITU-T Rec. H.222.0 | ISO/IEC 13818-1 Annex A or ISO/IEC 13818-6_DSMCC_stream
|
|
* 1111 0011 ISO/IEC_13522_stream
|
|
* 1111 0100 ITU-T Rec. H.222.1 type A
|
|
* 1111 0101 ITU-T Rec. H.222.1 type B
|
|
* 1111 0110 ITU-T Rec. H.222.1 type C
|
|
* 1111 0111 ITU-T Rec. H.222.1 type D
|
|
* 1111 1000 ITU-T Rec. H.222.1 type E
|
|
* 1111 1001 ancillary_stream
|
|
* 1111 1010 ISO/IEC 14496-1_SL-packetized_stream
|
|
* 1111 1011 ISO/IEC 14496-1_FlexMux_stream
|
|
* 1111 1100 metadata stream
|
|
* 1111 1101 extended_stream_id
|
|
* 1111 1110 reserved data stream
|
|
* 1111 1111 program_stream_directory
|
|
*/
|
|
|
|
#define ID_PS_END_CODE 0xB9
|
|
#define ID_PS_PACK_START_CODE 0xBA
|
|
#define ID_PS_SYSTEM_HEADER_START_CODE 0xBB
|
|
#define ID_PS_PROGRAM_STREAM_MAP 0xBC
|
|
#define ID_PRIVATE_STREAM_1 0xBD
|
|
#define ID_PADDING_STREAM 0xBE
|
|
#define ID_PRIVATE_STREAM_2 0xBF
|
|
#define ID_ISO_IEC_MPEG12_AUDIO_STREAM_0 0xC0
|
|
#define ID_ISO_IEC_MPEG12_AUDIO_STREAM_32 0xDF
|
|
#define ID_ISO_IEC_MPEG12_VIDEO_STREAM_0 0xE0
|
|
#define ID_ISO_IEC_MPEG12_VIDEO_STREAM_16 0xEF
|
|
#define ID_ECM_STREAM 0xF0
|
|
#define ID_EMM_STREAM 0xF1
|
|
#define ID_DSMCC_STREAM 0xF2
|
|
#define ID_ISO_IEC_13522_STREAM 0xF3
|
|
#define ID_ITU_TREC_H222_TYPE_A_STREAM 0xF4
|
|
#define ID_ITU_TREC_H222_TYPE_B_STREAM 0xF5
|
|
#define ID_ITU_TREC_H222_TYPE_C_STREAM 0xF6
|
|
#define ID_ITU_TREC_H222_TYPE_D_STREAM 0xF7
|
|
#define ID_ITU_TREC_H222_TYPE_E_STREAM 0xF8
|
|
#define ID_ANCILLARY_STREAM 0xF9
|
|
#define ID_14496_1_SL_PACKETIZED_STREAM 0xFA
|
|
#define ID_14496_1_SL_FLEXMUX_STREAM 0xFB
|
|
#define ID_METADATA_STREAM 0xFC
|
|
#define ID_EXTENDED_STREAM_ID 0xFD
|
|
#define ID_RESERVED_STREAM_3 0xFE
|
|
#define ID_PROGRAM_STREAM_DIRECTORY 0xFF
|
|
|
|
/*
|
|
* PES stream_id_extension assignments (if stream_id == ID_EXTENDED_STREAM_ID)
|
|
*
|
|
* 000 0000 IPMP Control Information stream
|
|
* 000 0001 IPMP Stream
|
|
* 000 0010 - 001 0001 ISO/IEC 14496-17 text Streams
|
|
* 001 0010 - 010 0001 ISO/IEC 23002-3 auxiliary video data Streams
|
|
* ... .... - 011 1111 Reserved
|
|
*
|
|
* PRIVATE STREAM RANGES (But known as used)
|
|
* 101 0101 - 101 1111 VC-1
|
|
* 110 0000 - 110 1111 Dirac (VC-1)
|
|
*
|
|
* 111 0001 AC3 or independent sub-stream 0 of EAC3/DD+
|
|
* DTS or core sub-stream
|
|
* 111 0010 dependent sub-stream of EAC3/DD+
|
|
* DTS extension sub-stream
|
|
* Secondary EAC3/DD+
|
|
* Secondary DTS-HD LBR
|
|
* 111 0110 AC3 in MLP/TrueHD
|
|
* 1xx xxxx private_stream
|
|
*/
|
|
#define EXT_ID_IPMP_CONTORL_INFORMATION_STREAM 0x00
|
|
#define EXT_ID_IPMP_STREAM 0x01
|
|
|
|
/* VC-1 */
|
|
#define EXT_ID_VC1_FIRST 0x55
|
|
#define EXT_ID_VC1_LAST 0x5F
|
|
|
|
typedef enum {
|
|
PES_FLAG_PRIORITY = 1 << 3, /* PES_priority (present: high-priority) */
|
|
PES_FLAG_DATA_ALIGNMENT = 1 << 2, /* data_alignment_indicator */
|
|
PES_FLAG_COPYRIGHT = 1 << 1, /* copyright */
|
|
PES_FLAG_ORIGINAL_OR_COPY = 1 << 0 /* original_or_copy */
|
|
} PESHeaderFlags;
|
|
|
|
typedef enum {
|
|
PES_TRICK_MODE_FAST_FORWARD = 0x000,
|
|
PES_TRICK_MODE_SLOW_MOTION = 0x001,
|
|
PES_TRICK_MODE_FREEZE_FRAME = 0x010,
|
|
PES_TRICK_MODE_FAST_REVERSE = 0x011,
|
|
PES_TRICK_MODE_SLOW_REVERSE = 0x100,
|
|
/* ... */
|
|
PES_TRICK_MODE_INVALID = 0xfff /* Not present or invalid */
|
|
} PESTrickModeControl;
|
|
|
|
typedef enum {
|
|
PES_FIELD_ID_TOP_ONLY = 0x00, /* Display from top field only */
|
|
PES_FIELD_ID_BOTTOM_ONLY = 0x01, /* Display from bottom field only */
|
|
PES_FIELD_ID_COMPLETE_FRAME = 0x10, /* Display complete frame */
|
|
PES_FIELD_ID_INVALID = 0x11 /* Reserved/Invalid */
|
|
} PESFieldID;
|
|
|
|
typedef enum {
|
|
PES_PARSING_OK = 0, /* Header fully parsed and valid */
|
|
PES_PARSING_BAD = 1, /* Header invalid (CRC error for ex) */
|
|
PES_PARSING_NEED_MORE = 2 /* Not enough data to parse header */
|
|
} PESParsingResult;
|
|
|
|
typedef struct {
|
|
guint8 stream_id; /* See ID_* above */
|
|
guint16 packet_length; /* The size of the PES header and PES data
|
|
* (if 0 => unbounded packet) */
|
|
guint16 header_size; /* The complete size of the PES header */
|
|
|
|
/* All remaining entries in this structure are optional */
|
|
guint8 scrambling_control; /* 0x00 : Not scrambled/unspecified,
|
|
* The following are according to ETSI TS 101 154
|
|
* 0x01 : reserved for future DVB use
|
|
* 0x10 : PES packet scrambled with Even key
|
|
* 0x11 : PES packet scrambled with Odd key
|
|
*/
|
|
PESHeaderFlags flags;
|
|
|
|
guint64 PTS; /* PTS (-1 if not present or invalid) */
|
|
guint64 DTS; /* DTS (-1 if not present or invalid) */
|
|
guint64 ESCR; /* ESCR (-1 if not present or invalid) */
|
|
|
|
guint32 ES_rate; /* in bytes/seconds (0 if not present or invalid) */
|
|
PESTrickModeControl trick_mode;
|
|
|
|
/* Only valid for _FAST_FORWARD, _FAST_REVERSE and _FREEZE_FRAME */
|
|
PESFieldID field_id;
|
|
/* Only valid for _FAST_FORWARD and _FAST_REVERSE */
|
|
gboolean intra_slice_refresh;
|
|
guint8 frequency_truncation;
|
|
/* Only valid for _SLOW_FORWARD and _SLOW_REVERSE */
|
|
guint8 rep_cntrl;
|
|
|
|
guint8 additional_copy_info; /* Private data */
|
|
guint16 previous_PES_packet_CRC;
|
|
|
|
/* Extension fields */
|
|
const guint8* private_data; /* PES_private_data, 16 bytes long */
|
|
guint8 pack_header_size; /* Size of pack_header in bytes */
|
|
const guint8* pack_header;
|
|
gint8 program_packet_sequence_counter; /* -1 if not present or invalid */
|
|
gboolean MPEG1_MPEG2_identifier;
|
|
guint8 original_stuff_length;
|
|
|
|
guint32 P_STD_buffer_size; /* P-STD buffer size in bytes (0 if invalid
|
|
* or not present */
|
|
|
|
gsize extension_field_length;
|
|
guint8 stream_id_extension; /* Only valid if stream_id == ID_EXTENDED_STREAM_ID */
|
|
const guint8* stream_id_extension_data;
|
|
} PESHeader;
|
|
|
|
G_GNUC_INTERNAL PESParsingResult mpegts_parse_pes_header (const guint8* data, gsize size,
|
|
PESHeader *res, gint *offset);
|
|
G_GNUC_INTERNAL void init_pes_parser (void);
|
|
|
|
G_END_DECLS
|
|
#endif /* __PES_PARSE_H__ */
|