dvdsubenc.c File Reference

#include "avcodec.h"
#include "bytestream.h"
#include "codec_internal.h"
#include "dvdsub.h"
#include "libavutil/avassert.h"
#include "libavutil/bprint.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"

Go to the source code of this file.

Data Structures
struct	DVDSubtitleContext

Macros
#define	PUTNIBBLE(val)
#define	OFFSET(x)
#define	SE   AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Functions
static void	dvd_encode_rle (uint8_t **pq, const uint8_t *bitmap, int linesize, int w, int h, const int cmap[256])
static int	color_distance (uint32_t a, uint32_t b)
static void	count_colors (AVCodecContext *avctx, unsigned hits[33], const AVSubtitleRect *r)
	Count colors used in a rectangle, quantizing alpha and grouping by nearest global palette entry.
static void	select_palette (AVCodecContext *avctx, int out_palette[4], int out_alpha[4], unsigned hits[33])
static void	build_color_map (AVCodecContext *avctx, int cmap[], const uint32_t palette[], const int out_palette[], unsigned int const out_alpha[])
static void	copy_rectangle (AVSubtitleRect *dst, AVSubtitleRect *src, int cmap[])
static int	dvdsub_encode (AVCodecContext *avctx, uint8_t *outbuf, int outbuf_size, const AVSubtitle *h)
static int	bprint_to_extradata (AVCodecContext *avctx, struct AVBPrint *buf)
static av_cold int	dvdsub_init (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	dvdsubenc_class
const FFCodec	ff_dvdsub_encoder

Macro Definition Documentation

PUTNIBBLE

#define PUTNIBBLE

(

val

)

Value:

do {\
    if (ncnt++ & 1)\
        *q++ = bitbuf | ((val) & 0x0f);\
    else\
        bitbuf = (val) << 4;\
} while(0)

Definition at line 39 of file dvdsubenc.c.

Referenced by dvd_encode_rle().

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(DVDSubtitleContext, x)

Definition at line 479 of file dvdsubenc.c.

SE

#define SE   AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 480 of file dvdsubenc.c.

Function Documentation

dvd_encode_rle()

static void dvd_encode_rle ( uint8_t ** pq, const uint8_t * bitmap, int linesize, int w, int h, const int cmap[256] )

static

Definition at line 47 of file dvdsubenc.c.

Referenced by dvdsub_encode().

color_distance()

static int color_distance ( uint32_t a, uint32_t b )

static

Definition at line 100 of file dvdsubenc.c.

Referenced by build_color_map(), count_colors(), and select_palette().

count_colors()

static void count_colors ( AVCodecContext * avctx, unsigned hits[33], const AVSubtitleRect * r )

static

Count colors used in a rectangle, quantizing alpha and grouping by nearest global palette entry.

Definition at line 119 of file dvdsubenc.c.

Referenced by dvdsub_encode().

select_palette()

static void select_palette ( AVCodecContext * avctx, int out_palette[4], int out_alpha[4], unsigned hits[33] )

static

Definition at line 156 of file dvdsubenc.c.

Referenced by dvdsub_encode().

build_color_map()

static void build_color_map ( AVCodecContext * avctx, int cmap[], const uint32_t palette[], const int out_palette[], unsigned int const out_alpha[] )

static

Definition at line 214 of file dvdsubenc.c.

Referenced by dvdsub_encode().

copy_rectangle()

static void copy_rectangle ( AVSubtitleRect * dst, AVSubtitleRect * src, int cmap[] )

static

Definition at line 237 of file dvdsubenc.c.

Referenced by dvdsub_encode().

dvdsub_encode()

static int dvdsub_encode ( AVCodecContext * avctx, uint8_t * outbuf, int outbuf_size, const AVSubtitle * h )

static

Definition at line 253 of file dvdsubenc.c.

bprint_to_extradata()

static int bprint_to_extradata ( AVCodecContext * avctx, struct AVBPrint * buf )

static

Definition at line 422 of file dvdsubenc.c.

Referenced by dvdsub_init().

dvdsub_init()

static av_cold int dvdsub_init ( AVCodecContext * avctx )

static

Definition at line 445 of file dvdsubenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    {"palette", "set the global palette", OFFSET(palette_str), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, SE },
    {"even_rows_fix", "Make number of rows even (workaround for some players)", OFFSET(even_rows_fix), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, SE},
    { NULL },
}

Definition at line 481 of file dvdsubenc.c.

dvdsubenc_class

const AVClass dvdsubenc_class

static

Initial value:

= {
    .class_name = "VOBSUB subtitle encoder",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 487 of file dvdsubenc.c.

ff_dvdsub_encoder

const FFCodec ff_dvdsub_encoder

Initial value:

= {
    .p.name         = "dvdsub",
    CODEC_LONG_NAME("DVD subtitles"),
    .p.type         = AVMEDIA_TYPE_SUBTITLE,
    .p.id           = AV_CODEC_ID_DVD_SUBTITLE,
    .init           = dvdsub_init,
    FF_CODEC_ENCODE_SUB_CB(dvdsub_encode),
    .p.priv_class   = &dvdsubenc_class,
    .priv_data_size = sizeof(DVDSubtitleContext),
}

Definition at line 494 of file dvdsubenc.c.