#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>

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) ((c) & 0xFFFFFF)

#define	ARIBCC_COLOR_DIFF_RGB(c1, c2) (((c1) ^ (c2)) & 0x00FFFFFF)

#define	ARIBCC_COLOR_DIFF_A(c1, c2) (((c1) ^ (c2)) & 0xFF000000)

#define	CLUT_RGBA(r, g, b, a) (((unsigned)(a) << 24) \| ((r) << 16) \| ((g) << 8) \| (b))

#define	CLUT_A(c) (((c) >> 24) & 0xFF)

#define	CLUT_R(c) (((c) >> 16) & 0xFF)

#define	CLUT_G(c) (((c) >> 8) & 0xFF)

#define	CLUT_B(c) ( (c) & 0xFF)

#define	ARIBCC_COLOR_TO_CLUT_RGBA(c, a)

#define	ASS_SINGLE_RECT 0

#define	OFFSET(x) offsetof(ARIBCaptionContext, 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() More...

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 int	aribcaption_close (AVCodecContext *avctx)

static 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.

◆ ARIBC_BPRINT_SIZE_INIT

#define ARIBC_BPRINT_SIZE_INIT 64

Definition at line 39 of file libaribcaption.c.

◆ ARIBC_BPRINT_SIZE_MAX

#define ARIBC_BPRINT_SIZE_MAX (8 * 1024)

Definition at line 40 of file libaribcaption.c.

◆ ARIBC_ALPHA_MAX_NUM

#define ARIBC_ALPHA_MAX_NUM 4

Definition at line 41 of file libaribcaption.c.

◆ ARIBC_ALPHA_DEFAULT_FRONT

#define ARIBC_ALPHA_DEFAULT_FRONT 0xFF

Definition at line 42 of file libaribcaption.c.

◆ ARIBC_ALPHA_DEFAULT_BACK

#define ARIBC_ALPHA_DEFAULT_BACK 0x80

Definition at line 43 of file libaribcaption.c.

◆ ARIBCC_COLOR_RGB

#define ARIBCC_COLOR_RGB ( c ) ((c) & 0xFFFFFF)

Definition at line 45 of file libaribcaption.c.

◆ ARIBCC_COLOR_DIFF_RGB

#define ARIBCC_COLOR_DIFF_RGB	(	c1,
		c2
	)	(((c1) ^ (c2)) & 0x00FFFFFF)

Definition at line 46 of file libaribcaption.c.

◆ ARIBCC_COLOR_DIFF_A

#define ARIBCC_COLOR_DIFF_A	(	c1,
		c2
	)	(((c1) ^ (c2)) & 0xFF000000)

Definition at line 47 of file libaribcaption.c.

◆ CLUT_RGBA

#define CLUT_RGBA	(	r,
		g,
		b,
		a
	)	(((unsigned)(a) << 24) \| ((r) << 16) \| ((g) << 8) \| (b))

Definition at line 49 of file libaribcaption.c.

◆ CLUT_A

#define CLUT_A ( c ) (((c) >> 24) & 0xFF)

Definition at line 50 of file libaribcaption.c.

◆ CLUT_R

#define CLUT_R ( c ) (((c) >> 16) & 0xFF)

Definition at line 51 of file libaribcaption.c.

◆ CLUT_G

#define CLUT_G ( c ) (((c) >> 8) & 0xFF)

Definition at line 52 of file libaribcaption.c.

◆ CLUT_B

#define CLUT_B ( c ) ( (c) & 0xFF)

Definition at line 53 of file libaribcaption.c.

◆ 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.

◆ ASS_SINGLE_RECT

#define ASS_SINGLE_RECT 0

Definition at line 1110 of file libaribcaption.c.

◆ OFFSET

#define OFFSET ( x ) 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.

Referenced by aribcaption_decode().

◆ 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 int aribcaption_close ( AVCodecContext * avctx )

static

Definition at line 942 of file libaribcaption.c.

◆ aribcaption_init()

static 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.

Data Structures

Macros

Functions

Variables

Macro Definition Documentation

◆ DEFAULT_FONT_ASS

◆ ARIBC_BPRINT_SIZE_INIT

◆ ARIBC_BPRINT_SIZE_MAX

◆ ARIBC_ALPHA_MAX_NUM

◆ ARIBC_ALPHA_DEFAULT_FRONT

◆ ARIBC_ALPHA_DEFAULT_BACK

◆ ARIBCC_COLOR_RGB

◆ ARIBCC_COLOR_DIFF_RGB

◆ ARIBCC_COLOR_DIFF_A

◆ CLUT_RGBA

◆ CLUT_A

◆ CLUT_R

◆ CLUT_G

◆ CLUT_B

◆ ARIBCC_COLOR_TO_CLUT_RGBA

◆ ASS_SINGLE_RECT

◆ OFFSET

◆ SD

Function Documentation

◆ hex_dump_debug()

◆ logcat_callback()

◆ estimate_video_frame_size()

◆ clut_set_alpha()

◆ clut_find_nearlest_alpha()

◆ clut_find()

◆ clut_color_distance()

◆ clut_pick_or_set()

◆ clut_init()

◆ aribcaption_trans_bitmap_subtitle()

◆ set_ass_header()

◆ set_ass_color()

◆ aribcaption_trans_ass_subtitle()

◆ aribcaption_trans_text_subtitle()

◆ aribcaption_decode()

◆ aribcaption_flush()

◆ aribcaption_close()

◆ aribcaption_init()

Variable Documentation

◆ options

◆ aribcaption_class

◆ ff_libaribcaption_decoder