libavcodec/dvdsubenc.c File Reference

#include "avcodec.h"
#include "bytestream.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
Defines
#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[], 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

---

Define Documentation

#define PUTNIBBLE

(

val

)

Value:

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

Definition at line 32 of file dvdsubenc.c.

Referenced by dvd_encode_rle().

---

Function Documentation

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

Definition at line 202 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

static int color_distance	(	uint32_t	a,
		uint32_t	b
	)			[static]

Definition at line 93 of file dvdsubenc.c.

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

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

Definition at line 225 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

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 108 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

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 40 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

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

Definition at line 418 of file dvdsubenc.c.

static int dvdsub_init

(

AVCodecContext *

avctx

)

[static]

Definition at line 388 of file dvdsubenc.c.

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

Definition at line 241 of file dvdsubenc.c.

Referenced by dvdsub_encode().

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

Definition at line 144 of file dvdsubenc.c.

Referenced by encode_dvd_subtitles().

---

Variable Documentation

AVCodec ff_dvdsub_encoder

Initial value:

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

Definition at line 429 of file dvdsubenc.c.