#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/time_internal.h"
#include "avformat.h"
#include "internal.h"

Data Structures
struct	sbg_demuxer

struct	sbg_string

struct	sbg_fade

struct	sbg_timestamp

struct	sbg_script_definition

struct	sbg_script_synth

struct	sbg_script_tseq

struct	sbg_script_event

struct	sbg_script

struct	sbg_parser

struct	ws_interval

struct	ws_intervals

Macros
#define	SBG_SCALE (1 << 16)

#define	DAY (24 * 60 * 60)

#define	DAY_TS ((int64_t)DAY * AV_TIME_BASE)

#define	FORWARD_ERROR(c)

#define	ADD_EDATA32(v) do { AV_WL32(edata, (v)); edata += 4; } while(0)

#define	ADD_EDATA64(v) do { AV_WL64(edata, (v)); edata += 8; } while(0)

Enumerations
enum	sbg_fade_type { SBG_FADE_SILENCE = 0, SBG_FADE_SAME = 1, SBG_FADE_ADAPT = 3 }

enum	sbg_synth_type { SBG_TYPE_NONE, SBG_TYPE_SINE, SBG_TYPE_NOISE, SBG_TYPE_BELL, SBG_TYPE_MIX, SBG_TYPE_SPIN }

enum	ws_interval_type { WS_SINE = MKTAG('S','I','N','E'), WS_NOISE = MKTAG('N','O','I','S'), WS_SINE = MKTAG('S','I','N','E'), WS_NOISE = MKTAG('N','O','I','S') }

Functions
static void *	alloc_array_elem (void *array, size_t elsize, int size, int *max_size)

static int	str_to_time (const char str, int64_t rtime)

static int	is_space (char c)

static int	scale_double (void log, double d, double m, int r)

static int	lex_space (struct sbg_parser *p)

static int	lex_char (struct sbg_parser *p, char c)

static int	lex_double (struct sbg_parser p, double r)

static int	lex_fixed (struct sbg_parser p, const char t, int l)

static int	lex_line_end (struct sbg_parser *p)

static int	lex_wsword (struct sbg_parser p, struct sbg_string rs)

static int	lex_name (struct sbg_parser p, struct sbg_string rs)

static int	lex_time (struct sbg_parser p, int64_t rt)

static int	parse_immediate (struct sbg_parser *p)

static int	parse_preprogrammed (struct sbg_parser *p)

static int	parse_optarg (struct sbg_parser p, char o, struct sbg_string r)

static int	parse_options (struct sbg_parser *p)

static int	parse_timestamp (struct sbg_parser p, struct sbg_timestamp rts, int64_t *rrel)

static int	parse_fade (struct sbg_parser p, struct sbg_fade fr)

static int	parse_time_sequence (struct sbg_parser *p, int inblock)

static int	parse_wave_def (struct sbg_parser *p, int wavenum)

static int	parse_block_def (struct sbg_parser p, struct sbg_script_definition def)

static int	parse_volume (struct sbg_parser p, int vol)

static int	parse_synth_channel_sine (struct sbg_parser p, struct sbg_script_synth synth)

static int	parse_synth_channel_pink (struct sbg_parser p, struct sbg_script_synth synth)

static int	parse_synth_channel_bell (struct sbg_parser p, struct sbg_script_synth synth)

static int	parse_synth_channel_mix (struct sbg_parser p, struct sbg_script_synth synth)

static int	parse_synth_channel_spin (struct sbg_parser p, struct sbg_script_synth synth)

static int	parse_synth_channel (struct sbg_parser *p)

static int	parse_synth_def (struct sbg_parser p, struct sbg_script_definition def)

static int	parse_named_def (struct sbg_parser *p)

static void	free_script (struct sbg_script *s)

static int	parse_script (void log, char script, int script_len, struct sbg_script *rscript)

static int	read_whole_file (AVIOContext io, int max_size, char *rbuf)

static void	expand_timestamps (void log, struct sbg_script s)

static int	expand_tseq (void log, struct sbg_script s, int nb_ev_max, int64_t t0, struct sbg_script_tseq tseq)

static int	expand_script (void log, struct sbg_script s)

static int	add_interval (struct ws_intervals *inter, enum ws_interval_type type, uint32_t channels, int ref, int64_t ts1, int32_t f1, int32_t a1, int64_t ts2, int32_t f2, int32_t a2)

static int	add_bell (struct ws_intervals inter, struct sbg_script s, int64_t ts1, int64_t ts2, int32_t f, int32_t a)

static int	generate_interval (void log, struct sbg_script s, struct ws_intervals inter, int64_t ts1, int64_t ts2, struct sbg_script_synth s1, struct sbg_script_synth *s2, int transition)

static int	generate_plateau (void log, struct sbg_script s, struct ws_intervals inter, struct sbg_script_event ev1)

static int	generate_transition (void log, struct sbg_script s, struct ws_intervals inter, struct sbg_script_event ev1, struct sbg_script_event *ev2)

static int	generate_intervals (void log, struct sbg_script s, int sample_rate, struct ws_intervals *inter)

static int	encode_intervals (struct sbg_script s, AVCodecParameters par, struct ws_intervals *inter)

static av_cold int	sbg_read_probe (AVProbeData *p)

static av_cold int	sbg_read_header (AVFormatContext *avf)

static int	sbg_read_packet (AVFormatContext avf, AVPacket packet)

static int	sbg_read_seek2 (AVFormatContext *avf, int stream_index, int64_t min_ts, int64_t ts, int64_t max_ts, int flags)

static int	sbg_read_seek (AVFormatContext *avf, int stream_index, int64_t ts, int flags)

Variables
static const AVOption	sbg_options []

static const AVClass	sbg_demuxer_class

AVInputFormat	ff_sbg_demuxer

Macro Definition Documentation

◆ SBG_SCALE

#define SBG_SCALE (1 << 16)

Definition at line 32 of file sbgdec.c.

Referenced by scale_double().

◆ DAY

#define DAY (24 * 60 * 60)

Definition at line 33 of file sbgdec.c.

Referenced by expand_timestamps().

◆ DAY_TS

#define DAY_TS ((int64_t)DAY * AV_TIME_BASE)

Definition at line 34 of file sbgdec.c.

Referenced by expand_timestamps(), and generate_intervals().

◆ FORWARD_ERROR

#define FORWARD_ERROR ( c )

Value:

do { \
        int errcode = c; \
        if (errcode <= 0) \
            return errcode ? errcode : AVERROR_INVALIDDATA; \
    } while (0)

Definition at line 315 of file sbgdec.c.

Referenced by parse_options(), parse_synth_channel_bell(), parse_synth_channel_mix(), parse_synth_channel_pink(), parse_synth_channel_sine(), and parse_synth_channel_spin().

◆ ADD_EDATA32

#define ADD_EDATA32 ( v ) do { AV_WL32(edata, (v)); edata += 4; } while(0)

Referenced by encode_intervals().

◆ ADD_EDATA64

#define ADD_EDATA64 ( v ) do { AV_WL64(edata, (v)); edata += 8; } while(0)

Referenced by encode_intervals().

Enumeration Type Documentation

◆ sbg_fade_type

enum sbg_fade_type

Enumerator
SBG_FADE_SILENCE
SBG_FADE_SAME
SBG_FADE_ADAPT

Definition at line 48 of file sbgdec.c.

◆ sbg_synth_type

enum sbg_synth_type

Enumerator
SBG_TYPE_NONE
SBG_TYPE_SINE
SBG_TYPE_NOISE
SBG_TYPE_BELL
SBG_TYPE_MIX
SBG_TYPE_SPIN

Definition at line 58 of file sbgdec.c.

◆ ws_interval_type

enum ws_interval_type

Enumerator
WS_SINE
WS_NOISE
WS_SINE
WS_NOISE

Definition at line 138 of file sbgdec.c.

Function Documentation

◆ alloc_array_elem()

static void* alloc_array_elem	(	void **	array,
		size_t	elsize,
		int *	size,
		int *	max_size
	)

static

Definition at line 158 of file sbgdec.c.

Referenced by add_interval(), expand_tseq(), parse_named_def(), parse_synth_channel(), and parse_time_sequence().

◆ str_to_time()

static int str_to_time	(	const char *	str,
		int64_t *	rtime
	)

static

Definition at line 178 of file sbgdec.c.

Referenced by lex_time(), and parse_options().

◆ is_space()

static int is_space ( char c )

inlinestatic

Definition at line 204 of file sbgdec.c.

Referenced by lex_double(), lex_space(), and lex_wsword().

◆ scale_double()

static int scale_double	(	void *	log,
		double	d,
		double	m,
		int *	r
	)

inlinestatic

Definition at line 209 of file sbgdec.c.

Referenced by parse_synth_channel_bell(), parse_synth_channel_sine(), parse_synth_channel_spin(), and parse_volume().

◆ lex_space()

static int lex_space ( struct sbg_parser * p )

static

Definition at line 221 of file sbgdec.c.

Referenced by lex_line_end(), lex_wsword(), parse_block_def(), parse_named_def(), parse_script(), parse_synth_def(), parse_time_sequence(), and parse_timestamp().

◆ lex_char()

static int lex_char	(	struct sbg_parser *	p,
		char	c
	)

static

Definition at line 230 of file sbgdec.c.

Referenced by parse_block_def(), parse_fade(), parse_named_def(), parse_options(), parse_synth_channel(), parse_timestamp(), and parse_volume().

◆ lex_double()

static int lex_double	(	struct sbg_parser *	p,
		double *	r
	)

static

Definition at line 238 of file sbgdec.c.

Referenced by parse_synth_channel_bell(), parse_synth_channel_sine(), parse_synth_channel_spin(), and parse_volume().

◆ lex_fixed()

static int lex_fixed	(	struct sbg_parser *	p,
		const char *	t,
		int	l
	)

static

Definition at line 254 of file sbgdec.c.

Referenced by parse_synth_channel_bell(), parse_synth_channel_mix(), parse_synth_channel_pink(), parse_synth_channel_spin(), parse_time_sequence(), and parse_timestamp().

◆ lex_line_end()

static int lex_line_end ( struct sbg_parser * p )

static

Definition at line 262 of file sbgdec.c.

Referenced by parse_block_def(), parse_options(), parse_script(), parse_synth_def(), and parse_time_sequence().

◆ lex_wsword()

static int lex_wsword	(	struct sbg_parser *	p,
		struct sbg_string *	rs
	)

static

Definition at line 280 of file sbgdec.c.

Referenced by parse_optarg(), and parse_options().

◆ lex_name()

static int lex_name	(	struct sbg_parser *	p,
		struct sbg_string *	rs
	)

static

Definition at line 294 of file sbgdec.c.

Referenced by parse_named_def(), and parse_time_sequence().

◆ lex_time()

static int lex_time	(	struct sbg_parser *	p,
		int64_t *	rt
	)

static

Definition at line 308 of file sbgdec.c.

Referenced by parse_timestamp().

◆ parse_immediate()

static int parse_immediate ( struct sbg_parser * p )

static

Definition at line 322 of file sbgdec.c.

Referenced by parse_options().

◆ parse_preprogrammed()

static int parse_preprogrammed ( struct sbg_parser * p )

static

Definition at line 329 of file sbgdec.c.

Referenced by parse_options().

◆ parse_optarg()

static int parse_optarg	(	struct sbg_parser *	p,
		char	o,
		struct sbg_string *	r
	)

static

Definition at line 336 of file sbgdec.c.

Referenced by parse_options().

◆ parse_options()

static int parse_options ( struct sbg_parser * p )

static

Definition at line 346 of file sbgdec.c.

Referenced by parse_script().

◆ parse_timestamp()

static int parse_timestamp	(	struct sbg_parser *	p,
		struct sbg_timestamp *	rts,
		int64_t *	rrel
	)

static

Definition at line 459 of file sbgdec.c.

Referenced by parse_time_sequence().

◆ parse_fade()

static int parse_fade	(	struct sbg_parser *	p,
		struct sbg_fade *	fr
	)

static

Definition at line 490 of file sbgdec.c.

Referenced by parse_time_sequence().

◆ parse_time_sequence()

static int parse_time_sequence	(	struct sbg_parser *	p,
		int	inblock
	)

static

Definition at line 514 of file sbgdec.c.

Referenced by parse_block_def(), and parse_script().

◆ parse_wave_def()

static int parse_wave_def	(	struct sbg_parser *	p,
		int	wavenum
	)

static

Definition at line 567 of file sbgdec.c.

Referenced by parse_named_def().

◆ parse_block_def()

static int parse_block_def	(	struct sbg_parser *	p,
		struct sbg_script_definition *	def
	)

static

Definition at line 574 of file sbgdec.c.

Referenced by parse_named_def().

◆ parse_volume()

static int parse_volume	(	struct sbg_parser *	p,
		int *	vol
	)

static

Definition at line 603 of file sbgdec.c.

Referenced by parse_synth_channel_bell(), parse_synth_channel_mix(), parse_synth_channel_pink(), parse_synth_channel_sine(), and parse_synth_channel_spin().

◆ parse_synth_channel_sine()

static int parse_synth_channel_sine	(	struct sbg_parser *	p,
		struct sbg_script_synth *	synth
	)

static

Definition at line 616 of file sbgdec.c.

Referenced by parse_synth_channel().

◆ parse_synth_channel_pink()

static int parse_synth_channel_pink	(	struct sbg_parser *	p,
		struct sbg_script_synth *	synth
	)

static

Definition at line 637 of file sbgdec.c.

Referenced by parse_synth_channel().

◆ parse_synth_channel_bell()

static int parse_synth_channel_bell	(	struct sbg_parser *	p,
		struct sbg_script_synth *	synth
	)

static

Definition at line 650 of file sbgdec.c.

Referenced by parse_synth_channel().

◆ parse_synth_channel_mix()

static int parse_synth_channel_mix	(	struct sbg_parser *	p,
		struct sbg_script_synth *	synth
	)

static

Definition at line 669 of file sbgdec.c.

Referenced by parse_synth_channel().

◆ parse_synth_channel_spin()

static int parse_synth_channel_spin	(	struct sbg_parser *	p,
		struct sbg_script_synth *	synth
	)

static

Definition at line 682 of file sbgdec.c.

Referenced by parse_synth_channel().

◆ parse_synth_channel()

static int parse_synth_channel ( struct sbg_parser * p )

static

Definition at line 705 of file sbgdec.c.

Referenced by parse_synth_def().

◆ parse_synth_def()

static int parse_synth_def	(	struct sbg_parser *	p,
		struct sbg_script_definition *	def
	)

static

Definition at line 731 of file sbgdec.c.

Referenced by parse_named_def().

◆ parse_named_def()

static int parse_named_def ( struct sbg_parser * p )

static

Definition at line 755 of file sbgdec.c.

Referenced by parse_script().

◆ free_script()

static void free_script ( struct sbg_script * s )

static

Definition at line 782 of file sbgdec.c.

Referenced by parse_script(), sbg_read_header(), and sbg_read_probe().

◆ parse_script()

static int parse_script	(	void *	log,
		char *	script,
		int	script_len,
		struct sbg_script *	rscript
	)

static

Definition at line 792 of file sbgdec.c.

Referenced by sbg_read_header(), and sbg_read_probe().

◆ read_whole_file()

static int read_whole_file	(	AVIOContext *	io,
		int	max_size,
		char **	rbuf
	)

static

Definition at line 854 of file sbgdec.c.

Referenced by sbg_read_header().

◆ expand_timestamps()

static void expand_timestamps	(	void *	log,
		struct sbg_script *	s
	)

static

Definition at line 887 of file sbgdec.c.

Referenced by expand_script().

◆ expand_tseq()

static int expand_tseq	(	void *	log,
		struct sbg_script *	s,
		int *	nb_ev_max,
		int64_t	t0,
		struct sbg_script_tseq *	tseq
	)

static

Definition at line 941 of file sbgdec.c.

Referenced by expand_script().

◆ expand_script()

static int expand_script	(	void *	log,
		struct sbg_script *	s
	)

static

Definition at line 987 of file sbgdec.c.

Referenced by sbg_read_header().

◆ add_interval()

static int add_interval	(	struct ws_intervals *	inter,
		enum ws_interval_type	type,
		uint32_t	channels,
		int	ref,
		int64_t	ts1,
		int32_t	f1,
		int32_t	a1,
		int64_t	ts2,
		int32_t	f2,
		int32_t	a2
	)

static

Definition at line 1006 of file sbgdec.c.

Referenced by add_bell(), and generate_interval().

◆ add_bell()

static int add_bell	(	struct ws_intervals *	inter,
		struct sbg_script *	s,
		int64_t	ts1,
		int64_t	ts2,
		int32_t	f,
		int32_t	a
	)

static

Definition at line 1040 of file sbgdec.c.

Referenced by generate_interval().

◆ generate_interval()

static int generate_interval	(	void *	log,
		struct sbg_script *	s,
		struct ws_intervals *	inter,
		int64_t	ts1,
		int64_t	ts2,
		struct sbg_script_synth *	s1,
		struct sbg_script_synth *	s2,
		int	transition
	)

static

Definition at line 1068 of file sbgdec.c.

Referenced by generate_plateau(), and generate_transition().

◆ generate_plateau()

static int generate_plateau	(	void *	log,
		struct sbg_script *	s,
		struct ws_intervals *	inter,
		struct sbg_script_event *	ev1
	)

static

Definition at line 1147 of file sbgdec.c.

Referenced by generate_intervals().

◆ generate_transition()

static int generate_transition	(	void *	log,
		struct sbg_script *	s,
		struct ws_intervals *	inter,
		struct sbg_script_event *	ev1,
		struct sbg_script_event *	ev2
	)

static

Definition at line 1176 of file sbgdec.c.

Referenced by generate_intervals().

◆ generate_intervals()

static int generate_intervals	(	void *	log,
		struct sbg_script *	s,
		int	sample_rate,
		struct ws_intervals *	inter
	)

static

Definition at line 1262 of file sbgdec.c.

Referenced by sbg_read_header().

◆ encode_intervals()

static int encode_intervals	(	struct sbg_script *	s,
		AVCodecParameters *	par,
		struct ws_intervals *	inter
	)

static

Definition at line 1327 of file sbgdec.c.

Referenced by sbg_read_header().

◆ sbg_read_probe()

static av_cold int sbg_read_probe ( AVProbeData * p )

static

Definition at line 1370 of file sbgdec.c.

◆ sbg_read_header()

static av_cold int sbg_read_header ( AVFormatContext * avf )

static

Definition at line 1382 of file sbgdec.c.

◆ sbg_read_packet()

static int sbg_read_packet	(	AVFormatContext *	avf,
		AVPacket *	packet
	)

static

Definition at line 1446 of file sbgdec.c.

◆ sbg_read_seek2()

static int sbg_read_seek2	(	AVFormatContext *	avf,
		int	stream_index,
		int64_t	min_ts,
		int64_t	ts,
		int64_t	max_ts,
		int	flags
	)

static

Definition at line 1466 of file sbgdec.c.

Referenced by sbg_read_seek().

◆ sbg_read_seek()

static int sbg_read_seek	(	AVFormatContext *	avf,
		int	stream_index,
		int64_t	ts,
		int	flags
	)

static

Definition at line 1477 of file sbgdec.c.

Variable Documentation

◆ sbg_options

const AVOption sbg_options[]

static

Initial value:

= {
    { "sample_rate", "", 0x42,
      AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX,
      AV_OPT_FLAG_DECODING_PARAM },
    { "frame_size", "", 0x42,
      AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX,
      AV_OPT_FLAG_DECODING_PARAM },
    { "max_file_size", "", 0x42,
      AV_OPT_TYPE_INT, { .i64 = 5000000 }, 0, INT_MAX,
      AV_OPT_FLAG_DECODING_PARAM },
    { NULL },
}

Definition at line 1483 of file sbgdec.c.

◆ sbg_demuxer_class

const AVClass sbg_demuxer_class

static

Initial value:

= {
    .class_name = "sbg_demuxer",
    .item_name  = av_default_item_name,
    .option     = sbg_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1496 of file sbgdec.c.

◆ ff_sbg_demuxer

AVInputFormat ff_sbg_demuxer

Initial value:

= {
    .name           = "sbg",
    .long_name      = NULL_IF_CONFIG_SMALL("SBaGen binaural beats script"),
    .priv_data_size = sizeof(struct sbg_demuxer),
    .read_probe     = sbg_read_probe,
    .read_header    = sbg_read_header,
    .read_packet    = sbg_read_packet,
    .read_seek      = sbg_read_seek,
    .read_seek2     = sbg_read_seek2,
    .extensions     = "sbg",
    .priv_class     = &sbg_demuxer_class,
}

Definition at line 1503 of file sbgdec.c.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ SBG_SCALE

◆ DAY

◆ DAY_TS

◆ FORWARD_ERROR

◆ ADD_EDATA32

◆ ADD_EDATA64

Enumeration Type Documentation

◆ sbg_fade_type

◆ sbg_synth_type

◆ ws_interval_type

Function Documentation

◆ alloc_array_elem()

◆ str_to_time()

◆ is_space()

◆ scale_double()

◆ lex_space()

◆ lex_char()

◆ lex_double()

◆ lex_fixed()

◆ lex_line_end()

◆ lex_wsword()

◆ lex_name()

◆ lex_time()

◆ parse_immediate()

◆ parse_preprogrammed()

◆ parse_optarg()

◆ parse_options()

◆ parse_timestamp()

◆ parse_fade()

◆ parse_time_sequence()

◆ parse_wave_def()

◆ parse_block_def()

◆ parse_volume()

◆ parse_synth_channel_sine()

◆ parse_synth_channel_pink()

◆ parse_synth_channel_bell()

◆ parse_synth_channel_mix()

◆ parse_synth_channel_spin()

◆ parse_synth_channel()

◆ parse_synth_def()

◆ parse_named_def()

◆ free_script()

◆ parse_script()

◆ read_whole_file()

◆ expand_timestamps()

◆ expand_tseq()

◆ expand_script()

◆ add_interval()

◆ add_bell()

◆ generate_interval()

◆ generate_plateau()

◆ generate_transition()

◆ generate_intervals()

◆ encode_intervals()

◆ sbg_read_probe()

◆ sbg_read_header()

◆ sbg_read_packet()

◆ sbg_read_seek2()

◆ sbg_read_seek()

Variable Documentation

◆ sbg_options

◆ sbg_demuxer_class

◆ ff_sbg_demuxer