libaribcaption.c File Reference

#include "avcodec.h"
#include "codec_internal.h"
#include "internal.h"
#include "libavcodec/ass.h"
#include "libavutil/avstring.h"
#include "libavutil/avutil.h"
#include "libavutil/mem.h"
#include "libavutil/thread.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include <aribcaption/aribcaption.h>

Go to the source code of this file.

Data Structures
struct	ARIBCaptionContext

Macros
#define	DEFAULT_FONT_ASS   "sans-serif"
#define	ARIBC_BPRINT_SIZE_INIT   64
#define	ARIBC_BPRINT_SIZE_MAX   (8 * 1024)
#define	ARIBC_ALPHA_MAX_NUM   4
#define	ARIBC_ALPHA_DEFAULT_FRONT   0xFF
#define	ARIBC_ALPHA_DEFAULT_BACK   0x80
#define	ARIBCC_COLOR_RGB(c)
#define	ARIBCC_COLOR_DIFF_RGB(c1, c2)
#define	ARIBCC_COLOR_DIFF_A(c1, c2)
#define	CLUT_RGBA(r, g, b, a)
#define	CLUT_A(c)
#define	CLUT_R(c)
#define	CLUT_G(c)
#define	CLUT_B(c)
#define	ARIBCC_COLOR_TO_CLUT_RGBA(c, a)
#define	ASS_SINGLE_RECT   0
#define	OFFSET(x)
#define	SD   AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM

Functions
static void	hex_dump_debug (void *ctx, const char *buf, int buf_size)
static void	logcat_callback (aribcc_loglevel_t level, const char *message, void *userdata)
static void	estimate_video_frame_size (ARIBCaptionContext *ctx)
static void	clut_set_alpha (ARIBCaptionContext *ctx, uint8_t a)
static uint8_t	clut_find_nearlest_alpha (ARIBCaptionContext *ctx, uint8_t a)
static int	clut_find (ARIBCaptionContext *ctx, uint32_t rgba)
static int	clut_color_distance (uint32_t rgba1, uint32_t rgba2)
static uint8_t	clut_pick_or_set (ARIBCaptionContext *ctx, int r, int g, int b, int a)
static void	clut_init (ARIBCaptionContext *ctx, aribcc_caption_region_t *region)
static int	aribcaption_trans_bitmap_subtitle (ARIBCaptionContext *ctx)
	aribcaption_trans_{bitmap|ass|text}_subtitle()
static int	set_ass_header (ARIBCaptionContext *ctx)
static void	set_ass_color (AVBPrint *buf, int color_num, aribcc_color_t new_color, aribcc_color_t old_color)
static int	aribcaption_trans_ass_subtitle (ARIBCaptionContext *ctx)
static int	aribcaption_trans_text_subtitle (ARIBCaptionContext *ctx)
static int	aribcaption_decode (AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, const AVPacket *avpkt)
static void	aribcaption_flush (AVCodecContext *avctx)
static av_cold int	aribcaption_close (AVCodecContext *avctx)
static av_cold int	aribcaption_init (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	aribcaption_class
const FFCodec	ff_libaribcaption_decoder

Macro Definition Documentation

DEFAULT_FONT_ASS

#define DEFAULT_FONT_ASS   "sans-serif"

Definition at line 36 of file libaribcaption.c.

Referenced by set_ass_header().

ARIBC_BPRINT_SIZE_INIT

#define ARIBC_BPRINT_SIZE_INIT   64

Definition at line 39 of file libaribcaption.c.

Referenced by aribcaption_trans_ass_subtitle().

ARIBC_BPRINT_SIZE_MAX

#define ARIBC_BPRINT_SIZE_MAX   (8 * 1024)

Definition at line 40 of file libaribcaption.c.

Referenced by aribcaption_trans_ass_subtitle().

ARIBC_ALPHA_MAX_NUM

#define ARIBC_ALPHA_MAX_NUM   4

Definition at line 41 of file libaribcaption.c.

Referenced by clut_find_nearlest_alpha(), and clut_set_alpha().

ARIBC_ALPHA_DEFAULT_FRONT

#define ARIBC_ALPHA_DEFAULT_FRONT   0xFF

Definition at line 42 of file libaribcaption.c.

Referenced by aribcaption_trans_ass_subtitle(), and clut_init().

ARIBC_ALPHA_DEFAULT_BACK

#define ARIBC_ALPHA_DEFAULT_BACK   0x80

Definition at line 43 of file libaribcaption.c.

Referenced by aribcaption_trans_ass_subtitle(), and clut_init().

ARIBCC_COLOR_RGB

#define ARIBCC_COLOR_RGB

(

c

)

Value:

((c) & 0xFFFFFF)

Definition at line 45 of file libaribcaption.c.

Referenced by set_ass_color().

ARIBCC_COLOR_DIFF_RGB

#define ARIBCC_COLOR_DIFF_RGB	(		c1,
			c2 )

Value:

(((c1) ^ (c2)) & 0x00FFFFFF)

Definition at line 46 of file libaribcaption.c.

Referenced by set_ass_color().

ARIBCC_COLOR_DIFF_A

#define ARIBCC_COLOR_DIFF_A	(		c1,
			c2 )

Value:

(((c1) ^ (c2)) & 0xFF000000)

Definition at line 47 of file libaribcaption.c.

Referenced by set_ass_color().

CLUT_RGBA

#define CLUT_RGBA	(		r,
			g,
			b,
			a )

Value:

(((unsigned)(a) << 24) | ((r) << 16) | ((g) << 8) | (b))

Definition at line 49 of file libaribcaption.c.

Referenced by clut_init(), and clut_pick_or_set().

CLUT_A

#define CLUT_A

(

c

)

Value:

(((c) >> 24) & 0xFF)

Definition at line 50 of file libaribcaption.c.

Referenced by clut_init(), and clut_pick_or_set().

CLUT_R

#define CLUT_R

(

c

)

Value:

(((c) >> 16) & 0xFF)

Definition at line 51 of file libaribcaption.c.

Referenced by clut_color_distance().

CLUT_G

#define CLUT_G

(

c

)

Value:

(((c) >>  8) & 0xFF)

Definition at line 52 of file libaribcaption.c.

Referenced by clut_color_distance().

CLUT_B

#define CLUT_B

(

c

)

Value:

( (c)        & 0xFF)

Definition at line 53 of file libaribcaption.c.

Referenced by clut_color_distance().

ARIBCC_COLOR_TO_CLUT_RGBA

#define ARIBCC_COLOR_TO_CLUT_RGBA	(		c,
			a )

Value:

                                        (((ARIBCC_COLOR_A(c) ? ARIBCC_COLOR_A(c) : (a)) << 24) | \
                                        (ARIBCC_COLOR_R(c) << 16) | \
                                        (ARIBCC_COLOR_G(c) <<  8) | \
                                        (ARIBCC_COLOR_B(c)))

Definition at line 55 of file libaribcaption.c.

Referenced by clut_init().

ASS_SINGLE_RECT

#define ASS_SINGLE_RECT   0

Definition at line 1110 of file libaribcaption.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(ARIBCaptionContext, x)

Definition at line 1113 of file libaribcaption.c.

SD

#define SD   AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM

Definition at line 1114 of file libaribcaption.c.

Function Documentation

hex_dump_debug()

static void hex_dump_debug ( void * ctx, const char * buf, int buf_size )

static

Definition at line 106 of file libaribcaption.c.

logcat_callback()

static void logcat_callback ( aribcc_loglevel_t level, const char * message, void * userdata )

static

Definition at line 119 of file libaribcaption.c.

Referenced by aribcaption_init().

estimate_video_frame_size()

static void estimate_video_frame_size ( ARIBCaptionContext * ctx )

static

Definition at line 140 of file libaribcaption.c.

Referenced by aribcaption_init(), and aribcaption_trans_bitmap_subtitle().

clut_set_alpha()

static void clut_set_alpha ( ARIBCaptionContext * ctx, uint8_t a )

static

Definition at line 165 of file libaribcaption.c.

Referenced by clut_init().

clut_find_nearlest_alpha()

static uint8_t clut_find_nearlest_alpha ( ARIBCaptionContext * ctx, uint8_t a )

static

Definition at line 180 of file libaribcaption.c.

Referenced by clut_pick_or_set().

clut_find()

static int clut_find ( ARIBCaptionContext * ctx, uint32_t rgba )

static

Definition at line 201 of file libaribcaption.c.

Referenced by clut_init().

clut_color_distance()

static int clut_color_distance ( uint32_t rgba1, uint32_t rgba2 )

inlinestatic

Definition at line 212 of file libaribcaption.c.

Referenced by clut_pick_or_set().

clut_pick_or_set()

static uint8_t clut_pick_or_set ( ARIBCaptionContext * ctx, int r, int g, int b, int a )

static

Definition at line 219 of file libaribcaption.c.

Referenced by aribcaption_trans_bitmap_subtitle().

clut_init()

static void clut_init ( ARIBCaptionContext * ctx, aribcc_caption_region_t * region )

static

Definition at line 254 of file libaribcaption.c.

Referenced by aribcaption_trans_bitmap_subtitle().

aribcaption_trans_bitmap_subtitle()

static int aribcaption_trans_bitmap_subtitle ( ARIBCaptionContext * ctx )

static

aribcaption_trans_{bitmap|ass|text}_subtitle()

Transfer decoded subtitle to AVSubtitle with corresponding subtitle type.

Parameters

ctx	pointer to the ARIBCaptionContext

Returns

> 0 number of rectangles to be displayed = 0 no subtitle < 0 error code

Definition at line 317 of file libaribcaption.c.

Referenced by aribcaption_decode().

set_ass_header()

static int set_ass_header ( ARIBCaptionContext * ctx )

static

Definition at line 499 of file libaribcaption.c.

Referenced by aribcaption_init(), and aribcaption_trans_ass_subtitle().

set_ass_color()

static void set_ass_color ( AVBPrint * buf, int color_num, aribcc_color_t new_color, aribcc_color_t old_color )

static

Definition at line 571 of file libaribcaption.c.

Referenced by aribcaption_trans_ass_subtitle().

aribcaption_trans_ass_subtitle()

static int aribcaption_trans_ass_subtitle ( ARIBCaptionContext * ctx )

static

Definition at line 582 of file libaribcaption.c.

Referenced by aribcaption_decode().

aribcaption_trans_text_subtitle()

static int aribcaption_trans_text_subtitle ( ARIBCaptionContext * ctx )

static

Definition at line 792 of file libaribcaption.c.

Referenced by aribcaption_decode().

aribcaption_decode()

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

static

Definition at line 844 of file libaribcaption.c.

aribcaption_flush()

static void aribcaption_flush ( AVCodecContext * avctx )

static

Definition at line 930 of file libaribcaption.c.

aribcaption_close()

static av_cold int aribcaption_close ( AVCodecContext * avctx )

static

Definition at line 942 of file libaribcaption.c.

aribcaption_init()

static av_cold int aribcaption_init ( AVCodecContext * avctx )

static

Definition at line 957 of file libaribcaption.c.

Variable Documentation

options

const AVOption options[]

static

Definition at line 1115 of file libaribcaption.c.

aribcaption_class

const AVClass aribcaption_class

static

Initial value:

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

Definition at line 1163 of file libaribcaption.c.

ff_libaribcaption_decoder

const FFCodec ff_libaribcaption_decoder

Initial value:

= {
    .p.name         = "libaribcaption",
    .p.long_name    = NULL_IF_CONFIG_SMALL("ARIB STD-B24 caption decoder"),
    .p.type         = AVMEDIA_TYPE_SUBTITLE,
    .p.id           = AV_CODEC_ID_ARIB_CAPTION,
    .priv_data_size = sizeof(ARIBCaptionContext),
    .init           = aribcaption_init,
    .close          = aribcaption_close,
    FF_CODEC_DECODE_SUB_CB(aribcaption_decode),
    .flush          = aribcaption_flush,
    .p.priv_class   = &aribcaption_class,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 1170 of file libaribcaption.c.