mpeg2_ps.c File Reference

#include "mpeg2_ps.h"

Include dependency graph for mpeg2_ps.c:

Data Structures
struct	mpeg2ps_ts_t
struct	mpeg2ps_record_pes_t
struct	mpeg2ps_stream_t
struct	mpeg2ps_t

Macros
#define	FDNULL   0
#define	file_location(__f)   gf_ftell(__f)
#define	file_seek_to(__f, __off)   gf_fseek(__f, __off, SEEK_SET)
#define	MPEG2PS_RECORD_TIME   ((u64) (5 * 90000))
#define	SEQ_ID   1
#define	IS_MPEG_START(a)   ((a) == 0xb3 || (a) == 0x00 || (a) == 0xb8)
#define	NUM_ELEMENTS_IN_ARRAY(name)   ((sizeof((name))) / (sizeof(*(name))))

Functions
static GFINLINE u16	convert16 (u8 *p)
static GFINLINE u32	convert32 (u8 *p)
static FILE *	file_open (const char *name)
static Bool	file_okay (FILE *fd)
static void	file_close (FILE *fd)
static Bool	file_read_bytes (FILE *fd, u8 *buffer, u32 len)
static void	file_skip_bytes (FILE *fd, s32 len)
static u64	file_size (FILE *fd)
static mpeg2ps_record_pes_t *	create_record (s64 loc, u64 ts)
void	mpeg2ps_record_pts (mpeg2ps_stream_t *sptr, s64 location, mpeg2ps_ts_t *pTs)
int	MPEG12_ParseSeqHdr (unsigned char *pbuffer, u32 buflen, s32 *have_mpeg2, u32 *height, u32 *width, Double *frame_rate, Double *bitrate, u32 *aspect_ratio)
s32	MPEG12_PictHdrType (unsigned char *pbuffer)
static u64	read_pts (u8 *pak)
static mpeg2ps_stream_t *	mpeg2ps_stream_create (u8 stream_id, u8 substream)
static void	mpeg2ps_stream_destroy (mpeg2ps_stream_t *sptr)
static void	adv_past_pack_hdr (FILE *fd, u8 *pak, u32 read_from_start)
static Bool	find_pack_start (FILE *fd, u8 *saved, u32 len)
static void	copy_bytes_to_pes_buffer (mpeg2ps_stream_t *sptr, u16 pes_len)
static Bool	read_to_next_pes_header (FILE *fd, u8 *stream_id, u16 *pes_len)
static Bool	read_pes_header_data (FILE *fd, u16 orig_pes_len, u16 *pes_left, Bool *have_ts, mpeg2ps_ts_t *ts)
static Bool	search_for_next_pes_header (mpeg2ps_stream_t *sptr, u16 *pes_len, Bool *have_ts, s64 *found_loc)
static Bool	mpeg2ps_stream_read_next_pes_buffer (mpeg2ps_stream_t *sptr)
static Bool	mpeg2ps_stream_find_mpeg_video_frame (mpeg2ps_stream_t *sptr)
static Bool	mpeg2ps_stream_find_ac3_frame (mpeg2ps_stream_t *sptr)
static Bool	mpeg2ps_stream_find_mp3_frame (mpeg2ps_stream_t *sptr)
static Bool	mpeg2ps_stream_read_frame (mpeg2ps_stream_t *sptr, u8 **buffer, u32 *buflen, Bool advance_pointers)
static void	get_info_from_frame (mpeg2ps_stream_t *sptr, u8 *buffer, u32 buflen)
static void	clear_stream_buffer (mpeg2ps_stream_t *sptr)
static u64	convert_ts (mpeg2ps_stream_t *sptr, mpeg2ps_ts_type_t ts_type, u64 ts, u64 base_ts, u32 frames_since_ts)
static mpeg2ps_stream_t *	find_stream_from_id (mpeg2ps_t *ps, u8 stream_id, u8 substream)
static Bool	add_stream (mpeg2ps_t *ps, u8 stream_id, u8 substream, s64 first_loc, mpeg2ps_ts_t *ts)
static void	check_fd_for_stream (mpeg2ps_t *ps, mpeg2ps_stream_t *sptr)
static void	advance_frame (mpeg2ps_stream_t *sptr)
static void	get_info_for_all_streams (mpeg2ps_t *ps)
static void	mpeg2ps_scan_file (mpeg2ps_t *ps)
u64	mpeg2ps_get_max_time_msec (mpeg2ps_t *ps)
u32	mpeg2ps_get_video_stream_count (mpeg2ps_t *ps)
static Bool	invalid_video_streamno (mpeg2ps_t *ps, u32 streamno)
mpeg2ps_video_type_t	mpeg2ps_get_video_stream_type (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_video_stream_width (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_video_stream_height (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_video_stream_aspect_ratio (mpeg2ps_t *ps, u32 streamno)
Double	mpeg2ps_get_video_stream_bitrate (mpeg2ps_t *ps, u32 streamno)
Double	mpeg2ps_get_video_stream_framerate (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_video_stream_id (mpeg2ps_t *ps, u32 streamno)
static Bool	invalid_audio_streamno (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_audio_stream_count (mpeg2ps_t *ps)
mpeg2ps_audio_type_t	mpeg2ps_get_audio_stream_type (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_audio_stream_sample_freq (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_audio_stream_channels (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_audio_stream_bitrate (mpeg2ps_t *ps, u32 streamno)
u32	mpeg2ps_get_audio_stream_id (mpeg2ps_t *ps, u32 streamno)
mpeg2ps_t *	mpeg2ps_init (const char *filename)
void	mpeg2ps_close (mpeg2ps_t *ps)
static u64	stream_convert_frame_ts_to_msec (mpeg2ps_stream_t *sptr, mpeg2ps_ts_type_t ts_type, u64 base_dts, u32 *freq_ts)
Bool	mpeg2ps_get_video_frame (mpeg2ps_t *ps, u32 streamno, u8 **buffer, u32 *buflen, u8 *frame_type, mpeg2ps_ts_type_t ts_type, u64 *decode_timestamp, u64 *compose_timestamp)
Bool	mpeg2ps_get_audio_frame (mpeg2ps_t *ps, u32 streamno, u8 **buffer, u32 *buflen, mpeg2ps_ts_type_t ts_type, u32 *freq_timestamp, u64 *timestamp)
static void	mpeg2ps_binary_seek (mpeg2ps_t *ps, mpeg2ps_stream_t *sptr, u64 search_dts, u64 start_dts, u64 start_loc, u64 end_dts, u64 end_loc)
static mpeg2ps_record_pes_t *	search_for_ts (mpeg2ps_stream_t *sptr, u64 dts)
static Bool	mpeg2ps_seek_frame (mpeg2ps_t *ps, mpeg2ps_stream_t *sptr, u64 search_msec_timestamp)
Bool	mpeg2ps_seek_video_frame (mpeg2ps_t *ps, u32 streamno, u64 msec_timestamp)
Bool	mpeg2ps_seek_audio_frame (mpeg2ps_t *ps, u32 streamno, u64 msec_timestamp)
u64	mpeg2ps_get_first_cts (mpeg2ps_t *ps)

Variables
static Double	mpeg12_frame_rate_table [16]

---

Data Structure Documentation

mpeg2ps_ts_t

struct mpeg2ps_ts_t

Data Fields
Bool	have_pts
Bool	have_dts
u64	pts
u64	dts

mpeg2ps_record_pes_t

struct mpeg2ps_record_pes_t

Collaboration diagram for mpeg2ps_record_pes_t:

Data Fields
struct mpeg2ps_record_pes_t *	next_rec
u64	dts
u64	location

mpeg2ps_stream_t

struct mpeg2ps_stream_t

Collaboration diagram for mpeg2ps_stream_t:

Data Fields
mpeg2ps_record_pes_t *	record_first
mpeg2ps_record_pes_t *	record_last
FILE *	m_fd
Bool	is_video
u8	m_stream_id
u8	m_substream_id
mpeg2ps_ts_t	next_pes_ts
mpeg2ps_ts_t	frame_ts
u32	frames_since_last_ts
u64	last_ts
Bool	have_frame_loaded
u8 *	pes_buffer
u32	pes_buffer_size
u32	pes_buffer_size_max
u32	pes_buffer_on
u32	frame_len
u32	pict_header_offset
s64	first_pes_loc
u64	start_dts
Bool	first_pes_has_dts
s64	end_dts_loc
u64	end_dts
u32	freq
u32	channels
u32	bitrate
u32	samples_per_frame
u32	layer
u32	h
u32	w
u32	par
Double	frame_rate
s32	have_mpeg2
Double	bit_rate
u64	ticks_per_frame

mpeg2ps_

struct mpeg2ps_

Collaboration diagram for mpeg2ps_t:

Data Fields
mpeg2ps_stream_t *	video_streams[16]
mpeg2ps_stream_t *	audio_streams[32]
char *	filename
FILE *	fd
u64	first_dts
u32	audio_cnt
u32	video_cnt
s64	end_loc
u64	max_dts
u64	max_time

Macro Definition Documentation

FDNULL

#define FDNULL   0

file_location

#define file_location

(

__f

)

gf_ftell(__f)

file_seek_to

#define file_seek_to	(		__f,
			__off
	)		gf_fseek(__f, __off, SEEK_SET)

MPEG2PS_RECORD_TIME

#define MPEG2PS_RECORD_TIME   ((u64) (5 * 90000))

SEQ_ID

#define SEQ_ID   1

IS_MPEG_START

#define IS_MPEG_START

(

a

)

((a) == 0xb3 || (a) == 0x00 || (a) == 0xb8)

NUM_ELEMENTS_IN_ARRAY

#define NUM_ELEMENTS_IN_ARRAY

(

name

)

((sizeof((name))) / (sizeof(*(name))))

Function Documentation

convert16()

static GFINLINE u16 convert16 ( u8 *  p )

static

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convert32()

static GFINLINE u32 convert32 ( u8 *  p )

static

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file_open()

static FILE * file_open ( const char *  name )

static

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file_okay()

static Bool file_okay ( FILE *  fd )

static

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file_close()

static void file_close ( FILE *  fd )

static

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file_read_bytes()

static Bool file_read_bytes ( FILE *  fd, u8 *  buffer, u32  len  )

static

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file_skip_bytes()

static void file_skip_bytes ( FILE *  fd, s32  len  )

static

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file_size()

static u64 file_size ( FILE *  fd )

static

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create_record()

static mpeg2ps_record_pes_t * create_record ( s64  loc, u64  ts  )

static

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mpeg2ps_record_pts()

void mpeg2ps_record_pts	(	mpeg2ps_stream_t *	sptr,
		s64	location,
		mpeg2ps_ts_t *	pTs
	)

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MPEG12_ParseSeqHdr()

int MPEG12_ParseSeqHdr	(	unsigned char *	pbuffer,
		u32	buflen,
		s32 *	have_mpeg2,
		u32 *	height,
		u32 *	width,
		Double *	frame_rate,
		Double *	bitrate,
		u32 *	aspect_ratio
	)

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MPEG12_PictHdrType()

s32 MPEG12_PictHdrType

(

unsigned char *

pbuffer

)

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read_pts()

static u64 read_pts ( u8 *  pak )

static

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mpeg2ps_stream_create()

static mpeg2ps_stream_t * mpeg2ps_stream_create ( u8  stream_id, u8  substream  )

static

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mpeg2ps_stream_destroy()

static void mpeg2ps_stream_destroy ( mpeg2ps_stream_t *  sptr )

static

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adv_past_pack_hdr()

static void adv_past_pack_hdr ( FILE *  fd, u8 *  pak, u32  read_from_start  )

static

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find_pack_start()

static Bool find_pack_start ( FILE *  fd, u8 *  saved, u32  len  )

static

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copy_bytes_to_pes_buffer()

static void copy_bytes_to_pes_buffer ( mpeg2ps_stream_t *  sptr, u16  pes_len  )

static

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read_to_next_pes_header()

static Bool read_to_next_pes_header ( FILE *  fd, u8 *  stream_id, u16 *  pes_len  )

static

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read_pes_header_data()

static Bool read_pes_header_data ( FILE *  fd, u16  orig_pes_len, u16 *  pes_left, Bool *  have_ts, mpeg2ps_ts_t *  ts  )

static

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search_for_next_pes_header()

static Bool search_for_next_pes_header ( mpeg2ps_stream_t *  sptr, u16 *  pes_len, Bool *  have_ts, s64 *  found_loc  )

static

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mpeg2ps_stream_read_next_pes_buffer()

static Bool mpeg2ps_stream_read_next_pes_buffer ( mpeg2ps_stream_t *  sptr )

static

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mpeg2ps_stream_find_mpeg_video_frame()

static Bool mpeg2ps_stream_find_mpeg_video_frame ( mpeg2ps_stream_t *  sptr )

static

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mpeg2ps_stream_find_ac3_frame()

static Bool mpeg2ps_stream_find_ac3_frame ( mpeg2ps_stream_t *  sptr )

static

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mpeg2ps_stream_find_mp3_frame()

static Bool mpeg2ps_stream_find_mp3_frame ( mpeg2ps_stream_t *  sptr )

static

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mpeg2ps_stream_read_frame()

static Bool mpeg2ps_stream_read_frame ( mpeg2ps_stream_t *  sptr, u8 **  buffer, u32 *  buflen, Bool  advance_pointers  )

static

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get_info_from_frame()

static void get_info_from_frame ( mpeg2ps_stream_t *  sptr, u8 *  buffer, u32  buflen  )

static

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clear_stream_buffer()

static void clear_stream_buffer ( mpeg2ps_stream_t *  sptr )

static

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convert_ts()

static u64 convert_ts ( mpeg2ps_stream_t *  sptr, mpeg2ps_ts_type_t  ts_type, u64  ts, u64  base_ts, u32  frames_since_ts  )

static

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find_stream_from_id()

static mpeg2ps_stream_t * find_stream_from_id ( mpeg2ps_t *  ps, u8  stream_id, u8  substream  )

static

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add_stream()

static Bool add_stream ( mpeg2ps_t *  ps, u8  stream_id, u8  substream, s64  first_loc, mpeg2ps_ts_t *  ts  )

static

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check_fd_for_stream()

static void check_fd_for_stream ( mpeg2ps_t *  ps, mpeg2ps_stream_t *  sptr  )

static

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advance_frame()

static void advance_frame ( mpeg2ps_stream_t *  sptr )

static

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get_info_for_all_streams()

static void get_info_for_all_streams ( mpeg2ps_t *  ps )

static

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mpeg2ps_scan_file()

static void mpeg2ps_scan_file ( mpeg2ps_t *  ps )

static

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mpeg2ps_get_max_time_msec()

u64 mpeg2ps_get_max_time_msec

(

mpeg2ps_t *

ps

)

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mpeg2ps_get_video_stream_count()

u32 mpeg2ps_get_video_stream_count

(

mpeg2ps_t *

ps

)

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invalid_video_streamno()

static Bool invalid_video_streamno ( mpeg2ps_t *  ps, u32  streamno  )

static

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mpeg2ps_get_video_stream_type()

mpeg2ps_video_type_t mpeg2ps_get_video_stream_type	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_video_stream_width()

u32 mpeg2ps_get_video_stream_width	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_video_stream_height()

u32 mpeg2ps_get_video_stream_height	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_video_stream_aspect_ratio()

u32 mpeg2ps_get_video_stream_aspect_ratio	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_video_stream_bitrate()

Double mpeg2ps_get_video_stream_bitrate	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_video_stream_framerate()

Double mpeg2ps_get_video_stream_framerate	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_video_stream_id()

u32 mpeg2ps_get_video_stream_id	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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invalid_audio_streamno()

static Bool invalid_audio_streamno ( mpeg2ps_t *  ps, u32  streamno  )

static

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mpeg2ps_get_audio_stream_count()

u32 mpeg2ps_get_audio_stream_count

(

mpeg2ps_t *

ps

)

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mpeg2ps_get_audio_stream_type()

mpeg2ps_audio_type_t mpeg2ps_get_audio_stream_type	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_audio_stream_sample_freq()

u32 mpeg2ps_get_audio_stream_sample_freq	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_audio_stream_channels()

u32 mpeg2ps_get_audio_stream_channels	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_audio_stream_bitrate()

u32 mpeg2ps_get_audio_stream_bitrate	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_get_audio_stream_id()

u32 mpeg2ps_get_audio_stream_id	(	mpeg2ps_t *	ps,
		u32	streamno
	)

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mpeg2ps_init()

mpeg2ps_t * mpeg2ps_init

(

const char *

filename

)

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mpeg2ps_close()

void mpeg2ps_close

(

mpeg2ps_t *

ps

)

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stream_convert_frame_ts_to_msec()

static u64 stream_convert_frame_ts_to_msec ( mpeg2ps_stream_t *  sptr, mpeg2ps_ts_type_t  ts_type, u64  base_dts, u32 *  freq_ts  )

static

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mpeg2ps_get_video_frame()

Bool mpeg2ps_get_video_frame	(	mpeg2ps_t *	ps,
		u32	streamno,
		u8 **	buffer,
		u32 *	buflen,
		u8 *	frame_type,
		mpeg2ps_ts_type_t	ts_type,
		u64 *	decode_timestamp,
		u64 *	compose_timestamp
	)

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mpeg2ps_get_audio_frame()

Bool mpeg2ps_get_audio_frame	(	mpeg2ps_t *	ps,
		u32	streamno,
		u8 **	buffer,
		u32 *	buflen,
		mpeg2ps_ts_type_t	ts_type,
		u32 *	freq_timestamp,
		u64 *	timestamp
	)

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mpeg2ps_binary_seek()

static void mpeg2ps_binary_seek ( mpeg2ps_t *  ps, mpeg2ps_stream_t *  sptr, u64  search_dts, u64  start_dts, u64  start_loc, u64  end_dts, u64  end_loc  )

static

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search_for_ts()

static mpeg2ps_record_pes_t * search_for_ts ( mpeg2ps_stream_t *  sptr, u64  dts  )

static

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mpeg2ps_seek_frame()

static Bool mpeg2ps_seek_frame ( mpeg2ps_t *  ps, mpeg2ps_stream_t *  sptr, u64  search_msec_timestamp  )

static

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mpeg2ps_seek_video_frame()

Bool mpeg2ps_seek_video_frame	(	mpeg2ps_t *	ps,
		u32	streamno,
		u64	msec_timestamp
	)

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mpeg2ps_seek_audio_frame()

Bool mpeg2ps_seek_audio_frame	(	mpeg2ps_t *	ps,
		u32	streamno,
		u64	msec_timestamp
	)

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mpeg2ps_get_first_cts()

u64 mpeg2ps_get_first_cts

(

mpeg2ps_t *

ps

)

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Variable Documentation

mpeg12_frame_rate_table

Double mpeg12_frame_rate_table[16]

static

Initial value:

=
{
        0.0,   
        24000.0/1001.0,       
        24.0,
        25.0,
        30000.0/1001.0,
        30.0,
        50.0,
        ((60.0*1000.0)/1001.0),
        60.0,
 
        1,                    
        5,
        10,
        12,
        15,
        0,
        0,
}