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kierank-libmpegts/common.h

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/*****************************************************************************
* common.h : common data
*****************************************************************************
* Copyright (C) 2010 Kieran Kunhya
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*****************************************************************************/
#ifndef LIBMPEGTS_COMMON_H
#define LIBMPEGTS_COMMON_H
#include <stdio.h>
#include <stdlib.h>
#if HAVE_STDINT_H
#include <stdint.h>
#else
#include <inttypes.h>
#endif
#include "bitstream.h"
#include "libmpegts.h"
#include <string.h>
/* Standardised Audio/Video stream_types */
#define VIDEO_MPEG2 0x02
#define VIDEO_AVC 0x1b
#define AUDIO_MPEG1 0x03
#define AUDIO_MPEG2 0x04
#define AUDIO_ADTS 0x0f
#define AUDIO_LATM 0x11
#define PRIVATE_SECTION 0x05
#define PRIVATE_DATA 0x06
#define TS_HEADER_SIZE 4
#define TS_PACKET_SIZE 188
#define TS_CLOCK 27000000LL
#define TS_START 10
// arbitrary
#define MAX_PROGRAMS 100
#define MAX_STREAMS 100
/* DVB 40ms recommendation */
#define PCR_MAX_RETRANS_TIME 40
#define PAT_MAX_RETRANS_TIME 100
/* PIDs */
#define PAT_PID 0x0000
#define NIT_PID 0x0010
#define SIT_PID 0x001f
#define NULL_PID 0xffff
/* TIDs */
#define PAT_TID 0x00
#define PMT_TID 0x02
#define NIT_TID 0x40
#define SIT_TID 0x7f
/* NIT */
/* ETSI TS 101 162 - Temporary Private Use
* Used for both "Original Network ID" and "Network ID" */
#define DEFAULT_NID 0xff01
/* Program and Program Element Descriptor Tags */
#define VIDEO_STREAM_DESCRIPTOR_TAG 0x2
#define AUDIO_STREAM_DESCRIPTOR_TAG 0x3
#define REGISTRATION_DESCRIPTOR_TAG 0x5
#define DATA_STREAM_ALIGNMENT_DESCRIPTOR_TAG 0x6
#define ISO_693_LANGUAGE_DESCRIPTOR_TAG 0xa
#define PRIVATE_DATA_DESCRIPTOR_TAG 0xe
#define SMOOTHING_BUFFER_DESCRIPTOR_TAG 0x10
#define AVC_DESCRIPTOR_TAG 0x28
#define MPEG2_AAC_AUDIO_DESCRIPTOR 0x2b
#define SVC_EXTENSION_DESCRIPTOR_TAG 0x30
#define MVC_EXTENSION_DESCRIPTOR_TAG 0x31
#define USER_DEFINED_DESCRIPTOR_TAG 0xc4
#define TB_SIZE 4096
#define RX_SYS 1000000
#define R_SYS_DEFAULT 80000
/* Macros */
#define BOOLIFY(x) x = !!x
#define MIN(a,b) ( (a)<(b) ? (a) : (b) )
#define MAX(a,b) ( (a)>(b) ? (a) : (b) )
#define IS_VIDEO(x) ( x->stream_format == LIBMPEGTS_VIDEO_MPEG2 || x->stream_format == LIBMPEGTS_VIDEO_AVC )
/* Internal Program & Stream Structures */
typedef struct
{
int level;
int profile;
int frame_rate;
} mpegvideo_stream_ctx_t;
typedef struct
{
int num_channels;
int sample_rate;
int bits_per_sample;
} lpcm_stream_ctx_t;
typedef struct
{
int frame_rate;
int aspect_ratio;
} hdmv_video_stream_ctx_t;
typedef struct
{
int sample_rate_code;
int bsid;
int bit_rate_code;
int surround_mode;
int bsmod;
int num_channels;
} ts_atsc_ac3_info;
/* Blu-Ray DTCP */
typedef struct
{
uint8_t byte_1;
uint8_t byte_2;
} ts_dtcp_t;
typedef struct
{
/* in bytes */
int adapt_field_size;
int pes_header_size;
int cur_pos;
} buffer_queue_t;
typedef struct
{
int buf_size; /* size of buffer */
int cur_buf; /* current buffer fill */
double last_byte_removal_time;
buffer_queue_t queued_packets[10];
} buffer_t;
typedef struct
{
int pid;
int cc;
int stream_format; /* internal stream format type */
int stream_type; /* stream_type syntax element */
int stream_id;
int version_number;
int64_t last_pkt_pcr;
/* Stream contexts */
mpegvideo_stream_ctx_t *mpegvideo_ctx;
lpcm_stream_ctx_t *lpcm_ctx;
ts_atsc_ac3_info *atsc_ac3_ctx;
int num_dvb_sub;
ts_dvb_sub_t *dvb_sub_ctx;
int num_dvb_ttx;
ts_dvb_ttx_t *dvb_ttx_ctx;
int num_dvb_vbi;
ts_dvb_vbi_t *dvb_vbi_ctx;
int num_channels;
int max_frame_size;
/* T_STD */
buffer_t tb; /* transport buffer */
int rx; /* flow from transport to multiplex buffer (video) or main buffer (audio) */
buffer_t mb; /* multiplex buffer (video) or main buffer (audio) */
buffer_t eb; /* elementary buffer */
int rbx; /* flow from multiplex to elementary buffer (video) */
/* Language Codes */
int write_lang_code;
char lang_code[4];
int audio_type;
/* AAC */
int aac_is_mpeg4;
int aac_profile;
int aac_channel_map;
/* ATSC */
/* DVB */
/* Stream Identifier */
int has_stream_identifier;
int stream_identifier;
/* DVB AU_Information */
int dvb_au;
int dvb_au_frame_rate;
/* ISDB */
/* CableLabs */
/* Blu-Ray */
int hdmv_video_format;
int hdmv_frame_rate;
int hdmv_aspect_ratio;
} ts_int_stream_t;
typedef struct
{
uint8_t *data;
int size;
uint8_t *cur_pos;
int bytes_left;
/* stream context associated with pes */
ts_int_stream_t *stream;
int header_size;
int random_access;
int priority;
int64_t initial_arrival_time;
int64_t final_arrival_time;
int64_t dts;
int64_t pts;
/* DVB AU_Information specific fields */
uint8_t frame_type;
int ref_pic_idc;
int write_pulldown_info;
int pic_struct;
} ts_int_pes_t;
typedef struct
{
ts_int_stream_t pmt;
int program_num;
int num_queued_pmt;
uint8_t **pmt_packets;
int num_streams;
ts_int_stream_t *streams[MAX_STREAMS];
ts_int_stream_t *pcr_stream;
int pmt_version;
uint64_t last_pcr;
int64_t video_dts;
sdt_program_ctx_t sdt_ctx;
int is_3dtv;
int sb_leak_rate;
int sb_size;
} ts_int_program_t;
struct ts_writer_t
{
struct
{
int i_bitstream;
uint8_t *p_bitstream;
bs_t bs;
} out;
uint64_t bytes_written;
uint64_t packets_written;
int ts_type;
int ts_id;
int cbr;
int ts_muxrate;
int pat_cc;
int num_programs;
ts_int_program_t *programs[MAX_PROGRAMS];
int pat_period;
int pcr_period;
int sdt_period;
int first_input;
int pat_version;
int network_pid;
int network_id;
int num_buffered_frames;
ts_int_pes_t **buffered_frames;
int num_pcrs;
int pcr_list_alloced;
int64_t *pcr_list;
/* system control */
buffer_t tb; /* transport buffer */
buffer_t main_b; /* main buffer */
int rx_sys; /* flow from transport to main buffer */
int r_sys; /* flow from main buffer to system decoder */
/* CableLabs */
int legacy_constraints;
/* DVB-specific */
ts_int_stream_t *nit;
ts_int_stream_t *sdt;
ts_int_stream_t *eit;
ts_int_stream_t *tdt;
ts_int_stream_t *sit;
uint64_t last_pat;
uint64_t last_pmt;
uint64_t last_nit;
uint64_t last_sdt;
uint64_t last_eit;
uint64_t last_tdt;
uint64_t last_sit;
ts_dtcp_t *dtcp_ctx;
};
enum adaptation_field_control_e
{
PAYLOAD_ONLY = 1,
ADAPT_FIELD_ONLY = 2,
ADAPT_FIELD_AND_PAYLOAD = 3,
};
void write_bytes( bs_t *s, uint8_t *bytes, int length );
void write_packet_header( ts_writer_t *w, bs_t *s, int start, int pid, int adapt_field, int *cc );
void write_registration_descriptor( bs_t *s, int descriptor_tag, int descriptor_length, char *format_id );
void write_crc( bs_t *s, int start );
int write_padding( bs_t *s, int start );
int increase_pcr( ts_writer_t *w, int num_packets, int imaginary );
ts_int_stream_t *find_stream( ts_writer_t *w, int pid );
#endif
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