dvdsubenc.c File Reference

#include "avcodec.h"
#include "bytestream.h"
#include "internal.h"
#include "libavutil/avassert.h"
#include "libavutil/bprint.h"
#include "libavutil/imgutils.h"

Go to the source code of this file.

Data Structures
struct	DVDSubtitleContext

Macros
#define	PUTNIBBLE(val)

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	encode_dvd_subtitles (AVCodecContext *avctx, uint8_t *outbuf, int outbuf_size, const AVSubtitle *h)
static int	dvdsub_init (AVCodecContext *avctx)
static int	dvdsub_encode (AVCodecContext *avctx, unsigned char *buf, int buf_size, const AVSubtitle *sub)

Variables
AVCodec	ff_dvdsub_encoder

Macro Definition Documentation

#define PUTNIBBLE

(

val

)

Value:

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

Definition at line 33 of file dvdsubenc.c.

Referenced by dvd_encode_rle().

Function Documentation

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 41 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

static int color_distance ( uint32_t  a, uint32_t  b  )

static

Definition at line 94 of file dvdsubenc.c.

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

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 113 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

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

static

Definition at line 150 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

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 208 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

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

static

Definition at line 231 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

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

static

Definition at line 247 of file dvdsubenc.c.

Referenced by dvdsub_encode().

static int dvdsub_init ( AVCodecContext *  avctx )

static

Definition at line 394 of file dvdsubenc.c.

static int dvdsub_encode ( AVCodecContext *  avctx, unsigned char *  buf, int  buf_size, const AVSubtitle *  sub  )

static

Definition at line 424 of file dvdsubenc.c.

Variable Documentation

AVCodec ff_dvdsub_encoder

Initial value:

= {
    .name           = "dvdsub",
    .long_name      = NULL_IF_CONFIG_SMALL("DVD subtitles"),
    .type           = AVMEDIA_TYPE_SUBTITLE,
    .id             = AV_CODEC_ID_DVD_SUBTITLE,
    .init           = dvdsub_init,
    .encode_sub     = dvdsub_encode,
    .priv_data_size = sizeof(DVDSubtitleContext),
}

Definition at line 435 of file dvdsubenc.c.