#include "avcodec.h"
#include "ass.h"
#include "libavutil/opt.h"
#include "libavutil/avstring.h"
#include "libavutil/common.h"
#include "libavutil/bprint.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "bytestream.h"
#include "codec_internal.h"

Data Structures
struct	FontRecord

struct	StyleBox

struct	MovTextDefault

struct	HighlightBox

struct	HilightcolorBox

struct	TextWrapBox

struct	MovTextContext

struct	Box

Macros
#define	STYLE_FLAG_BOLD (1<<0)

#define	STYLE_FLAG_ITALIC (1<<1)

#define	STYLE_FLAG_UNDERLINE (1<<2)

#define	BOX_SIZE_INITIAL 40

#define	STYL_BOX (1<<0)

#define	HLIT_BOX (1<<1)

#define	HCLR_BOX (1<<2)

#define	TWRP_BOX (1<<3)

#define	BOTTOM_LEFT 1

#define	BOTTOM_CENTER 2

#define	BOTTOM_RIGHT 3

#define	MIDDLE_LEFT 4

#define	MIDDLE_CENTER 5

#define	MIDDLE_RIGHT 6

#define	TOP_LEFT 7

#define	TOP_CENTER 8

#define	TOP_RIGHT 9

#define	RGB_TO_BGR(c) (((c) & 0xff) << 16 \| ((c) & 0xff00) \| (((c) >> 16) & 0xff))

#define	CMP(field) ((a)->field == (b)->field)

#define	OFFSET(x) offsetof(MovTextContext, x)

#define	FLAGS AV_OPT_FLAG_DECODING_PARAM \| AV_OPT_FLAG_SUBTITLE_PARAM

Functions
static void	mov_text_cleanup (MovTextContext *m)

static void	mov_text_cleanup_ftab (MovTextContext *m)

static void	mov_text_parse_style_record (StyleBox style, const uint8_t *ptr)

static int	mov_text_tx3g (AVCodecContext avctx, MovTextContext m)

static int	decode_twrp (const uint8_t tsmb, MovTextContext m, uint64_t size)

static int	decode_hlit (const uint8_t tsmb, MovTextContext m, uint64_t size)

static int	decode_hclr (const uint8_t tsmb, MovTextContext m, uint64_t size)

static int	styles_equivalent (const StyleBox a, const StyleBox b)

static int	decode_styl (const uint8_t tsmb, MovTextContext m, uint64_t size)

static int	get_utf8_length_at (const char text, const char text_end)

static int	text_to_ass (AVBPrint buf, const char text, const char text_end, AVCodecContext avctx)

static int	mov_text_init (AVCodecContext *avctx)

static int	mov_text_decode_frame (AVCodecContext avctx, AVSubtitle sub, int got_sub_ptr, const AVPacket avpkt)

static int	mov_text_decode_close (AVCodecContext *avctx)

static void	mov_text_flush (AVCodecContext *avctx)

Variables
static const Box	box_types []

const static size_t	box_count = FF_ARRAY_ELEMS(box_types)

static const AVOption	options []

static const AVClass	mov_text_decoder_class

const FFCodec	ff_movtext_decoder

Macro Definition Documentation

◆ STYLE_FLAG_BOLD

#define STYLE_FLAG_BOLD (1<<0)

Definition at line 33 of file movtextdec.c.

◆ STYLE_FLAG_ITALIC

#define STYLE_FLAG_ITALIC (1<<1)

Definition at line 34 of file movtextdec.c.

◆ STYLE_FLAG_UNDERLINE

#define STYLE_FLAG_UNDERLINE (1<<2)

Definition at line 35 of file movtextdec.c.

◆ BOX_SIZE_INITIAL

#define BOX_SIZE_INITIAL 40

Definition at line 37 of file movtextdec.c.

◆ STYL_BOX

#define STYL_BOX (1<<0)

Definition at line 39 of file movtextdec.c.

◆ HLIT_BOX

#define HLIT_BOX (1<<1)

Definition at line 40 of file movtextdec.c.

◆ HCLR_BOX

#define HCLR_BOX (1<<2)

Definition at line 41 of file movtextdec.c.

◆ TWRP_BOX

#define TWRP_BOX (1<<3)

Definition at line 42 of file movtextdec.c.

◆ BOTTOM_LEFT

#define BOTTOM_LEFT 1

Definition at line 44 of file movtextdec.c.

◆ BOTTOM_CENTER

#define BOTTOM_CENTER 2

Definition at line 45 of file movtextdec.c.

◆ BOTTOM_RIGHT

#define BOTTOM_RIGHT 3

Definition at line 46 of file movtextdec.c.

◆ MIDDLE_LEFT

#define MIDDLE_LEFT 4

Definition at line 47 of file movtextdec.c.

◆ MIDDLE_CENTER

#define MIDDLE_CENTER 5

Definition at line 48 of file movtextdec.c.

◆ MIDDLE_RIGHT

#define MIDDLE_RIGHT 6

Definition at line 49 of file movtextdec.c.

◆ TOP_LEFT

#define TOP_LEFT 7

Definition at line 50 of file movtextdec.c.

◆ TOP_CENTER

#define TOP_CENTER 8

Definition at line 51 of file movtextdec.c.

◆ TOP_RIGHT

#define TOP_RIGHT 9

Definition at line 52 of file movtextdec.c.

◆ RGB_TO_BGR

#define RGB_TO_BGR ( c ) (((c) & 0xff) << 16 | ((c) & 0xff00) | (((c) >> 16) & 0xff))

Definition at line 54 of file movtextdec.c.

◆ CMP

#define CMP ( field ) ((a)->field == (b)->field)

◆ OFFSET

#define OFFSET ( x ) offsetof(MovTextContext, x)

Definition at line 579 of file movtextdec.c.

◆ FLAGS

#define FLAGS AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_SUBTITLE_PARAM

Definition at line 580 of file movtextdec.c.

Function Documentation

◆ mov_text_cleanup()

static void mov_text_cleanup ( MovTextContext * m )

static

Definition at line 116 of file movtextdec.c.

Referenced by decode_styl(), mov_text_decode_close(), and mov_text_decode_frame().

◆ mov_text_cleanup_ftab()

static void mov_text_cleanup_ftab ( MovTextContext * m )

static

Definition at line 124 of file movtextdec.c.

Referenced by mov_text_decode_close(), and mov_text_tx3g().

◆ mov_text_parse_style_record()

static void mov_text_parse_style_record	(	StyleBox *	style,
		const uint8_t **	ptr
	)

static

Definition at line 132 of file movtextdec.c.

Referenced by decode_styl(), and mov_text_tx3g().

◆ mov_text_tx3g()

static int mov_text_tx3g	(	AVCodecContext *	avctx,
		MovTextContext *	m
	)

static

Definition at line 149 of file movtextdec.c.

Referenced by mov_text_init().

◆ decode_twrp()

static int decode_twrp	(	const uint8_t *	tsmb,
		MovTextContext *	m,
		uint64_t	size
	)

static

Definition at line 242 of file movtextdec.c.

◆ decode_hlit()

static int decode_hlit	(	const uint8_t *	tsmb,
		MovTextContext *	m,
		uint64_t	size
	)

static

Definition at line 249 of file movtextdec.c.

◆ decode_hclr()

static int decode_hclr	(	const uint8_t *	tsmb,
		MovTextContext *	m,
		uint64_t	size
	)

static

Definition at line 257 of file movtextdec.c.

◆ styles_equivalent()

static int styles_equivalent	(	const StyleBox *	a,
		const StyleBox *	b
	)

static

Definition at line 264 of file movtextdec.c.

Referenced by decode_styl().

◆ decode_styl()

static int decode_styl	(	const uint8_t *	tsmb,
		MovTextContext *	m,
		uint64_t	size
	)

static

Definition at line 272 of file movtextdec.c.

◆ get_utf8_length_at()

static int get_utf8_length_at	(	const char *	text,
		const char *	text_end
	)

static

Definition at line 335 of file movtextdec.c.

Referenced by text_to_ass().

◆ text_to_ass()

static int text_to_ass	(	AVBPrint *	buf,
		const char *	text,
		const char *	text_end,
		AVCodecContext *	avctx
	)

static

Definition at line 348 of file movtextdec.c.

Referenced by mov_text_decode_frame().

◆ mov_text_init()

static int mov_text_init ( AVCodecContext * avctx )

static

Definition at line 446 of file movtextdec.c.

◆ mov_text_decode_frame()

static int mov_text_decode_frame	(	AVCodecContext *	avctx,
		AVSubtitle *	sub,
		int *	got_sub_ptr,
		const AVPacket *	avpkt
	)

static

Definition at line 475 of file movtextdec.c.

◆ mov_text_decode_close()

static int mov_text_decode_close ( AVCodecContext * avctx )

static

Definition at line 564 of file movtextdec.c.

◆ mov_text_flush()

static void mov_text_flush ( AVCodecContext * avctx )

static

Definition at line 572 of file movtextdec.c.

Variable Documentation

◆ box_types

const Box box_types[]

static

Initial value:

= {
    { MKBETAG('s','t','y','l'), 2, decode_styl },
    { MKBETAG('h','l','i','t'), 4, decode_hlit },
    { MKBETAG('h','c','l','r'), 4, decode_hclr },
    { MKBETAG('t','w','r','p'), 1, decode_twrp }
}

Definition at line 325 of file movtextdec.c.

Referenced by mov_text_decode_frame().

◆ box_count

const static size_t box_count = FF_ARRAY_ELEMS(box_types)

static

Definition at line 332 of file movtextdec.c.

Referenced by mov_text_decode_frame().

◆ options

const AVOption options[]

static

Initial value:

= {
    { "width", "Frame width, usually video width", OFFSET(frame_width), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
    { "height", "Frame height, usually video height", OFFSET(frame_height), AV_OPT_TYPE_INT, {.i64=0}, 0, INT_MAX, FLAGS },
    { NULL },
}

Definition at line 581 of file movtextdec.c.

◆ mov_text_decoder_class

const AVClass mov_text_decoder_class

static

Initial value:

= {
    .class_name = "MOV text decoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 587 of file movtextdec.c.

◆ ff_movtext_decoder

const FFCodec ff_movtext_decoder

Initial value:

= {
    .p.name       = "mov_text",
    CODEC_LONG_NAME("3GPP Timed Text subtitle"),
    .p.type       = AVMEDIA_TYPE_SUBTITLE,
    .p.id         = AV_CODEC_ID_MOV_TEXT,
    .priv_data_size = sizeof(MovTextContext),
    .p.priv_class = &mov_text_decoder_class,
    .init         = mov_text_init,
    FF_CODEC_DECODE_SUB_CB(mov_text_decode_frame),
    .close        = mov_text_decode_close,
    .flush        = mov_text_flush,
}

Definition at line 594 of file movtextdec.c.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ STYLE_FLAG_BOLD

◆ STYLE_FLAG_ITALIC

◆ STYLE_FLAG_UNDERLINE

◆ BOX_SIZE_INITIAL

◆ STYL_BOX

◆ HLIT_BOX

◆ HCLR_BOX

◆ TWRP_BOX

◆ BOTTOM_LEFT

◆ BOTTOM_CENTER

◆ BOTTOM_RIGHT

◆ MIDDLE_LEFT

◆ MIDDLE_CENTER

◆ MIDDLE_RIGHT

◆ TOP_LEFT

◆ TOP_CENTER

◆ TOP_RIGHT

◆ RGB_TO_BGR

◆ CMP

◆ OFFSET

◆ FLAGS

Function Documentation

◆ mov_text_cleanup()

◆ mov_text_cleanup_ftab()

◆ mov_text_parse_style_record()

◆ mov_text_tx3g()

◆ decode_twrp()

◆ decode_hlit()

◆ decode_hclr()

◆ styles_equivalent()

◆ decode_styl()

◆ get_utf8_length_at()

◆ text_to_ass()

◆ mov_text_init()

◆ mov_text_decode_frame()

◆ mov_text_decode_close()

◆ mov_text_flush()

Variable Documentation

◆ box_types

◆ box_count

◆ options

◆ mov_text_decoder_class

◆ ff_movtext_decoder