movtextenc.c File Reference

#include <stdarg.h>
#include "avcodec.h"
#include "libavutil/opt.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/common.h"
#include "ass_split.h"
#include "ass.h"
#include "bytestream.h"
#include "internal.h"

Go to the source code of this file.

Data Structures
struct	StyleBox
struct	HighlightBox
struct	HilightcolorBox
struct	MovTextContext
struct	Box

Macros
#define	STYLE_FLAG_BOLD   (1<<0)
#define	STYLE_FLAG_ITALIC   (1<<1)
#define	STYLE_FLAG_UNDERLINE   (1<<2)
#define	STYLE_RECORD_SIZE   12
#define	SIZE_ADD   10
#define	STYL_BOX   (1<<0)
#define	HLIT_BOX   (1<<1)
#define	HCLR_BOX   (1<<2)
#define	DEFAULT_STYLE_FONT_ID   0x01
#define	DEFAULT_STYLE_FONTSIZE   0x12
#define	DEFAULT_STYLE_COLOR   0xffffffff
#define	DEFAULT_STYLE_FLAG   0x00
#define	BGR_TO_RGB(c)   (((c) & 0xff) << 16 | ((c) & 0xff00) | (((uint32_t)(c) >> 16) & 0xff))
#define	FONTSIZE_SCALE(s, fs)   ((fs) * (s)->font_scale_factor + 0.5)
#define	av_bprint_append_any(buf, data, size)   av_bprint_append_data(buf, ((const char*)data), size)
#define	OFFSET(x)   offsetof(MovTextContext, x)
#define	FLAGS   AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_SUBTITLE_PARAM

Functions
static void	mov_text_cleanup (MovTextContext *s)
static void	encode_styl (MovTextContext *s)
static void	encode_hlit (MovTextContext *s)
static void	encode_hclr (MovTextContext *s)
static int	mov_text_encode_close (AVCodecContext *avctx)
static int	encode_sample_description (AVCodecContext *avctx)
static av_cold int	mov_text_encode_init (AVCodecContext *avctx)
static int	mov_text_style_start (MovTextContext *s)
static uint8_t	mov_text_style_to_flag (const char style)
static void	mov_text_style_set (MovTextContext *s, uint8_t style_flags)
static void	mov_text_style_cb (void *priv, const char style, int close)
static void	mov_text_color_set (MovTextContext *s, uint32_t color)
static void	mov_text_color_cb (void *priv, unsigned int color, unsigned int color_id)
static void	mov_text_alpha_set (MovTextContext *s, uint8_t alpha)
static void	mov_text_alpha_cb (void *priv, int alpha, int alpha_id)
static uint16_t	find_font_id (MovTextContext *s, const char *name)
static void	mov_text_font_name_set (MovTextContext *s, const char *name)
static void	mov_text_font_name_cb (void *priv, const char *name)
static void	mov_text_font_size_set (MovTextContext *s, int size)
static void	mov_text_font_size_cb (void *priv, int size)
static void	mov_text_end_cb (void *priv)
static void	mov_text_ass_style_set (MovTextContext *s, ASSStyle *style)
static void	mov_text_dialog (MovTextContext *s, ASSDialog *dialog)
static void	mov_text_cancel_overrides_cb (void *priv, const char *style_name)
static unsigned	utf8_strlen (const char *text, int len)
static void	mov_text_text_cb (void *priv, const char *text, int len)
static void	mov_text_new_line_cb (void *priv, int forced)
static int	mov_text_encode_frame (AVCodecContext *avctx, unsigned char *buf, int bufsize, const AVSubtitle *sub)

Variables
static const Box	box_types []
static const size_t	box_count = FF_ARRAY_ELEMS(box_types)
static const ASSCodesCallbacks	mov_text_callbacks
static const AVOption	options []
static const AVClass	mov_text_encoder_class
AVCodec	ff_movtext_encoder

Macro Definition Documentation

STYLE_FLAG_BOLD

#define STYLE_FLAG_BOLD   (1<<0)

Definition at line 35 of file movtextenc.c.

STYLE_FLAG_ITALIC

#define STYLE_FLAG_ITALIC   (1<<1)

Definition at line 36 of file movtextenc.c.

STYLE_FLAG_UNDERLINE

#define STYLE_FLAG_UNDERLINE   (1<<2)

Definition at line 37 of file movtextenc.c.

STYLE_RECORD_SIZE

#define STYLE_RECORD_SIZE   12

Definition at line 38 of file movtextenc.c.

SIZE_ADD

#define SIZE_ADD   10

Definition at line 39 of file movtextenc.c.

STYL_BOX

#define STYL_BOX   (1<<0)

Definition at line 41 of file movtextenc.c.

HLIT_BOX

#define HLIT_BOX   (1<<1)

Definition at line 42 of file movtextenc.c.

HCLR_BOX

#define HCLR_BOX   (1<<2)

Definition at line 43 of file movtextenc.c.

DEFAULT_STYLE_FONT_ID

#define DEFAULT_STYLE_FONT_ID   0x01

Definition at line 45 of file movtextenc.c.

DEFAULT_STYLE_FONTSIZE

#define DEFAULT_STYLE_FONTSIZE   0x12

Definition at line 46 of file movtextenc.c.

DEFAULT_STYLE_COLOR

#define DEFAULT_STYLE_COLOR   0xffffffff

Definition at line 47 of file movtextenc.c.

DEFAULT_STYLE_FLAG

#define DEFAULT_STYLE_FLAG   0x00

Definition at line 48 of file movtextenc.c.

BGR_TO_RGB

#define BGR_TO_RGB

(

c

)

(((c) & 0xff) << 16 | ((c) & 0xff00) | (((uint32_t)(c) >> 16) & 0xff))

Definition at line 50 of file movtextenc.c.

FONTSIZE_SCALE

#define FONTSIZE_SCALE	(		s,
			fs
	)		((fs) * (s)->font_scale_factor + 0.5)

Definition at line 51 of file movtextenc.c.

av_bprint_append_any

#define av_bprint_append_any	(		buf,
			data,
			size
	)		av_bprint_append_data(buf, ((const char*)data), size)

Definition at line 52 of file movtextenc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(MovTextContext, x)

Definition at line 710 of file movtextenc.c.

FLAGS

#define FLAGS   AV_OPT_FLAG_ENCODING_PARAM | AV_OPT_FLAG_SUBTITLE_PARAM

Definition at line 711 of file movtextenc.c.

Function Documentation

mov_text_cleanup()

static void mov_text_cleanup ( MovTextContext *  s )

static

Definition at line 99 of file movtextenc.c.

Referenced by encode_styl(), and mov_text_style_start().

encode_styl()

static void encode_styl ( MovTextContext *  s )

static

Definition at line 105 of file movtextenc.c.

encode_hlit()

static void encode_hlit ( MovTextContext *  s )

static

Definition at line 133 of file movtextenc.c.

encode_hclr()

static void encode_hclr ( MovTextContext *  s )

static

Definition at line 147 of file movtextenc.c.

mov_text_encode_close()

static int mov_text_encode_close ( AVCodecContext *  avctx )

static

Definition at line 168 of file movtextenc.c.

encode_sample_description()

static int encode_sample_description ( AVCodecContext *  avctx )

static

Definition at line 179 of file movtextenc.c.

Referenced by mov_text_encode_init().

mov_text_encode_init()

static av_cold int mov_text_encode_init ( AVCodecContext *  avctx )

static

Definition at line 326 of file movtextenc.c.

mov_text_style_start()

static int mov_text_style_start ( MovTextContext *  s )

static

Definition at line 345 of file movtextenc.c.

Referenced by mov_text_alpha_set(), mov_text_ass_style_set(), mov_text_color_set(), mov_text_end_cb(), mov_text_font_name_set(), mov_text_font_size_set(), mov_text_style_cb(), and mov_text_style_set().

mov_text_style_to_flag()

static uint8_t mov_text_style_to_flag ( const char  style )

static

Definition at line 380 of file movtextenc.c.

Referenced by mov_text_style_cb().

mov_text_style_set()

static void mov_text_style_set ( MovTextContext *  s, uint8_t  style_flags  )

static

Definition at line 398 of file movtextenc.c.

Referenced by mov_text_ass_style_set().

mov_text_style_cb()

static void mov_text_style_cb ( void *  priv, const char  style, int  close  )

static

Definition at line 408 of file movtextenc.c.

mov_text_color_set()

static void mov_text_color_set ( MovTextContext *  s, uint32_t  color  )

static

Definition at line 425 of file movtextenc.c.

Referenced by mov_text_ass_style_set(), and mov_text_color_cb().

mov_text_color_cb()

static void mov_text_color_cb ( void *  priv, unsigned int  color, unsigned int  color_id  )

static

Definition at line 436 of file movtextenc.c.

mov_text_alpha_set()

static void mov_text_alpha_set ( MovTextContext *  s, uint8_t  alpha  )

static

Definition at line 463 of file movtextenc.c.

Referenced by mov_text_alpha_cb(), and mov_text_ass_style_set().

mov_text_alpha_cb()

static void mov_text_alpha_cb ( void *  priv, int  alpha, int  alpha_id  )

static

Definition at line 474 of file movtextenc.c.

find_font_id()

static uint16_t find_font_id ( MovTextContext *  s, const char *  name  )

static

Definition at line 497 of file movtextenc.c.

Referenced by mov_text_font_name_set().

mov_text_font_name_set()

static void mov_text_font_name_set ( MovTextContext *  s, const char *  name  )

static

Definition at line 507 of file movtextenc.c.

Referenced by mov_text_ass_style_set(), and mov_text_font_name_cb().

mov_text_font_name_cb()

static void mov_text_font_name_cb ( void *  priv, const char *  name  )

static

Definition at line 518 of file movtextenc.c.

mov_text_font_size_set()

static void mov_text_font_size_set ( MovTextContext *  s, int  size  )

static

Definition at line 523 of file movtextenc.c.

Referenced by mov_text_ass_style_set(), and mov_text_font_size_cb().

mov_text_font_size_cb()

static void mov_text_font_size_cb ( void *  priv, int  size  )

static

Definition at line 534 of file movtextenc.c.

mov_text_end_cb()

static void mov_text_end_cb ( void *  priv )

static

Definition at line 539 of file movtextenc.c.

mov_text_ass_style_set()

static void mov_text_ass_style_set ( MovTextContext *  s, ASSStyle *  style  )

static

Definition at line 545 of file movtextenc.c.

Referenced by mov_text_cancel_overrides_cb(), and mov_text_dialog().

mov_text_dialog()

static void mov_text_dialog ( MovTextContext *  s, ASSDialog *  dialog  )

static

Definition at line 567 of file movtextenc.c.

Referenced by mov_text_encode_frame().

mov_text_cancel_overrides_cb()

static void mov_text_cancel_overrides_cb ( void *  priv, const char *  style_name  )

static

Definition at line 575 of file movtextenc.c.

utf8_strlen()

static unsigned utf8_strlen ( const char *  text, int  len  )

static

Definition at line 588 of file movtextenc.c.

Referenced by mov_text_text_cb().

mov_text_text_cb()

static void mov_text_text_cb ( void *  priv, const char *  text, int  len  )

static

Definition at line 608 of file movtextenc.c.

mov_text_new_line_cb()

static void mov_text_new_line_cb ( void *  priv, int  forced  )

static

Definition at line 618 of file movtextenc.c.

mov_text_encode_frame()

static int mov_text_encode_frame ( AVCodecContext *  avctx, unsigned char *  buf, int  bufsize, const AVSubtitle *  sub  )

static

Definition at line 638 of file movtextenc.c.

Variable Documentation

box_types

const Box box_types[]

static

Initial value:

= {
    { encode_styl },
    { encode_hlit },
    { encode_hclr },
}

Definition at line 160 of file movtextenc.c.

Referenced by mov_text_encode_frame().

box_count

const size_t box_count = FF_ARRAY_ELEMS(box_types)

static

Definition at line 166 of file movtextenc.c.

Referenced by mov_text_encode_frame().

mov_text_callbacks

const ASSCodesCallbacks mov_text_callbacks

static

Initial value:

= {
    .text             = mov_text_text_cb,
    .new_line         = mov_text_new_line_cb,
    .style            = mov_text_style_cb,
    .color            = mov_text_color_cb,
    .alpha            = mov_text_alpha_cb,
    .font_name        = mov_text_font_name_cb,
    .font_size        = mov_text_font_size_cb,
    .cancel_overrides = mov_text_cancel_overrides_cb,
    .end              = mov_text_end_cb,
}

Definition at line 626 of file movtextenc.c.

Referenced by mov_text_encode_frame().

options

const AVOption options[]

static

Initial value:

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

Definition at line 712 of file movtextenc.c.

mov_text_encoder_class

const AVClass mov_text_encoder_class

static

Initial value:

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

Definition at line 717 of file movtextenc.c.

ff_movtext_encoder

AVCodec ff_movtext_encoder

Initial value:

= {
    .name           = "mov_text",
    .long_name      = NULL_IF_CONFIG_SMALL("3GPP Timed Text subtitle"),
    .type           = AVMEDIA_TYPE_SUBTITLE,
    .id             = AV_CODEC_ID_MOV_TEXT,
    .priv_data_size = sizeof(MovTextContext),
    .priv_class     = &mov_text_encoder_class,
    .init           = mov_text_encode_init,
    .encode_sub     = mov_text_encode_frame,
    .close          = mov_text_encode_close,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 724 of file movtextenc.c.