FFmpeg
Data Structures | Macros | Functions | Variables
movtextdec.c File Reference
#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"

Go to the source code of this file.

Data Structures

struct  MovTextDefault
 
struct  FontRecord
 
struct  StyleBox
 
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 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 int mov_text_tx3g (AVCodecContext *avctx, MovTextContext *m)
 
static int decode_twrp (const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
 
static int decode_hlit (const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
 
static int decode_hclr (const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
 
static int decode_styl (const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
 
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, void *data, int *got_sub_ptr, AVPacket *avpkt)
 
static int mov_text_decode_close (AVCodecContext *avctx)
 
static void mov_text_flush (AVCodecContext *avctx)
 

Variables

static const Box box_types []
 
static const size_t box_count = FF_ARRAY_ELEMS(box_types)
 
static const AVOption options []
 
static const AVClass mov_text_decoder_class
 
AVCodec ff_movtext_decoder
 

Macro Definition Documentation

#define STYLE_FLAG_BOLD   (1<<0)

Definition at line 32 of file movtextdec.c.

Referenced by decode_styl(), and mov_text_tx3g().

#define STYLE_FLAG_ITALIC   (1<<1)

Definition at line 33 of file movtextdec.c.

Referenced by decode_styl(), and mov_text_tx3g().

#define STYLE_FLAG_UNDERLINE   (1<<2)

Definition at line 34 of file movtextdec.c.

Referenced by decode_styl(), and mov_text_tx3g().

#define BOX_SIZE_INITIAL   40

Definition at line 36 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define STYL_BOX   (1<<0)

Definition at line 38 of file movtextdec.c.

Referenced by decode_styl(), mov_text_cleanup(), and text_to_ass().

#define HLIT_BOX   (1<<1)

Definition at line 39 of file movtextdec.c.

Referenced by decode_hlit(), and text_to_ass().

#define HCLR_BOX   (1<<2)

Definition at line 40 of file movtextdec.c.

Referenced by decode_hclr(), and text_to_ass().

#define TWRP_BOX   (1<<3)

Definition at line 41 of file movtextdec.c.

Referenced by decode_twrp(), and text_to_ass().

#define BOTTOM_LEFT   1

Definition at line 43 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define BOTTOM_CENTER   2

Definition at line 44 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define BOTTOM_RIGHT   3

Definition at line 45 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define MIDDLE_LEFT   4

Definition at line 46 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define MIDDLE_CENTER   5

Definition at line 47 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define MIDDLE_RIGHT   6

Definition at line 48 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define TOP_LEFT   7

Definition at line 49 of file movtextdec.c.

Referenced by eac_to_xyz(), mov_text_tx3g(), prepare_eac_in(), and prepare_eac_out().

#define TOP_CENTER   8

Definition at line 50 of file movtextdec.c.

Referenced by mov_text_tx3g().

#define TOP_RIGHT   9

Definition at line 51 of file movtextdec.c.

Referenced by eac_to_xyz(), mov_text_tx3g(), prepare_eac_in(), and prepare_eac_out().

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

Definition at line 53 of file movtextdec.c.

Referenced by mov_text_init(), and text_to_ass().

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

Definition at line 570 of file movtextdec.c.

Definition at line 571 of file movtextdec.c.

Function Documentation

static void mov_text_cleanup ( MovTextContext m)
static

Definition at line 123 of file movtextdec.c.

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

static void mov_text_cleanup_ftab ( MovTextContext m)
static

Definition at line 131 of file movtextdec.c.

Referenced by mov_text_decode_close(), and mov_text_tx3g().

static int mov_text_tx3g ( AVCodecContext avctx,
MovTextContext m 
)
static

Definition at line 139 of file movtextdec.c.

Referenced by mov_text_init().

static int decode_twrp ( const uint8_t tsmb,
MovTextContext m,
AVPacket avpkt 
)
static

Definition at line 243 of file movtextdec.c.

static int decode_hlit ( const uint8_t tsmb,
MovTextContext m,
AVPacket avpkt 
)
static

Definition at line 250 of file movtextdec.c.

static int decode_hclr ( const uint8_t tsmb,
MovTextContext m,
AVPacket avpkt 
)
static

Definition at line 258 of file movtextdec.c.

static int decode_styl ( const uint8_t tsmb,
MovTextContext m,
AVPacket avpkt 
)
static

Definition at line 265 of file movtextdec.c.

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

Definition at line 322 of file movtextdec.c.

Referenced by text_to_ass().

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

Definition at line 335 of file movtextdec.c.

Referenced by mov_text_decode_frame().

static int mov_text_init ( AVCodecContext avctx)
static

Definition at line 432 of file movtextdec.c.

static int mov_text_decode_frame ( AVCodecContext avctx,
void data,
int got_sub_ptr,
AVPacket avpkt 
)
static

Definition at line 460 of file movtextdec.c.

static int mov_text_decode_close ( AVCodecContext avctx)
static

Definition at line 555 of file movtextdec.c.

static void mov_text_flush ( AVCodecContext avctx)
static

Definition at line 563 of file movtextdec.c.

Variable Documentation

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 }
}
static int decode_twrp(const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
Definition: movtextdec.c:243
static int decode_hlit(const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
Definition: movtextdec.c:250
static int decode_hclr(const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
Definition: movtextdec.c:258
static int decode_styl(const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
Definition: movtextdec.c:265
#define MKBETAG(a, b, c, d)
Definition: common.h:406

Definition at line 312 of file movtextdec.c.

const size_t box_count = FF_ARRAY_ELEMS(box_types)
static

Definition at line 319 of file movtextdec.c.

Referenced by mov_text_decode_frame().

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 },
}
#define OFFSET(x)
Definition: movtextdec.c:570
#define NULL
Definition: coverity.c:32
#define FLAGS
Definition: movtextdec.c:571

Definition at line 572 of file movtextdec.c.

const AVClass mov_text_decoder_class
static
Initial value:
= {
.class_name = "MOV text decoder",
.item_name = av_default_item_name,
.option = options,
}
static const AVOption options[]
Definition: movtextdec.c:572
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235

Definition at line 578 of file movtextdec.c.

AVCodec ff_movtext_decoder
Initial value:
= {
.name = "mov_text",
.long_name = NULL_IF_CONFIG_SMALL("3GPP Timed Text subtitle"),
.priv_data_size = sizeof(MovTextContext),
.priv_class = &mov_text_decoder_class,
}
static void flush(AVCodecContext *avctx)
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
static int mov_text_init(AVCodecContext *avctx)
Definition: movtextdec.c:432
static const AVClass mov_text_decoder_class
Definition: movtextdec.c:578
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
static void mov_text_flush(AVCodecContext *avctx)
Definition: movtextdec.c:563
static int mov_text_decode_close(AVCodecContext *avctx)
Definition: movtextdec.c:555
static int mov_text_decode_frame(AVCodecContext *avctx, void *data, int *got_sub_ptr, AVPacket *avpkt)
Definition: movtextdec.c:460

Definition at line 585 of file movtextdec.c.