sbgdec.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "libavutil/attributes.h"
#include "libavutil/bprint.h"
#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/time_internal.h"
#include "avformat.h"
#include "demux.h"
#include "internal.h"

Go to the source code of this file.

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)
#define	ADD_EDATA64(v)

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') }

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, AVBPrint *rbuf)
static int	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 (const 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
const FFInputFormat	ff_sbg_demuxer

Macro Definition Documentation

SBG_SCALE

#define SBG_SCALE   (1 << 16)

Definition at line 37 of file sbgdec.c.

Referenced by scale_double().

DAY

#define DAY   (24 * 60 * 60)

Definition at line 38 of file sbgdec.c.

Referenced by expand_timestamps().

DAY_TS

#define DAY_TS   ((int64_t)DAY * AV_TIME_BASE)

Definition at line 39 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 322 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

)

Value:

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

Referenced by encode_intervals().

ADD_EDATA64

#define ADD_EDATA64

(

v

)

Value:

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 53 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 63 of file sbgdec.c.

ws_interval_type

enum ws_interval_type

Enumerator
WS_SINE
WS_NOISE

Definition at line 143 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 163 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 183 of file sbgdec.c.

Referenced by lex_time(), and parse_options().

is_space()

static int is_space ( char c )

inlinestatic

Definition at line 211 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 216 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 228 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 237 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 245 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 261 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 269 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 287 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 301 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 315 of file sbgdec.c.

Referenced by parse_timestamp().

parse_immediate()

static int parse_immediate ( struct sbg_parser * p )

static

Definition at line 329 of file sbgdec.c.

Referenced by parse_options().

parse_preprogrammed()

static int parse_preprogrammed ( struct sbg_parser * p )

static

Definition at line 336 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 343 of file sbgdec.c.

Referenced by parse_options().

parse_options()

static int parse_options ( struct sbg_parser * p )

static

Definition at line 353 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 466 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 499 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 523 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 579 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 586 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 615 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 628 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 649 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 662 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 681 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 694 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 717 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 743 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 767 of file sbgdec.c.

Referenced by parse_script().

free_script()

static void free_script ( struct sbg_script * s )

static

Definition at line 794 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 804 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, AVBPrint * rbuf )

static

Definition at line 866 of file sbgdec.c.

Referenced by sbg_read_header().

expand_timestamps()

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

static

Definition at line 882 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(), and expand_tseq().

expand_script()

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

static

Definition at line 990 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 1011 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 1045 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 1073 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 1152 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 1181 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 1267 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 1341 of file sbgdec.c.

Referenced by sbg_read_header().

sbg_read_probe()

static av_cold int sbg_read_probe ( const AVProbeData * p )

static

Definition at line 1384 of file sbgdec.c.

sbg_read_header()

static av_cold int sbg_read_header ( AVFormatContext * avf )

static

Definition at line 1396 of file sbgdec.c.

sbg_read_packet()

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

static

Definition at line 1478 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 1499 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 1510 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 1516 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 1529 of file sbgdec.c.

ff_sbg_demuxer

const FFInputFormat ff_sbg_demuxer

Initial value:

= {
    .p.name         = "sbg",
    .p.long_name    = NULL_IF_CONFIG_SMALL("SBaGen binaural beats script"),
    .p.extensions   = "sbg",
    .p.priv_class   = &sbg_demuxer_class,
    .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,
}

Definition at line 1536 of file sbgdec.c.