screenpresso.c File Reference

Screenpresso decoder. More...

#include <stdint.h>
#include <string.h>
#include <zlib.h>
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "internal.h"

Classes
struct	ScreenpressoContext

Typedefs
typedef struct ScreenpressoContext	ScreenpressoContext

Variables
AVCodec	ff_screenpresso_decoder

Detailed Description

Screenpresso decoder.

Fourcc: SPV1

Screenpresso simply horizontally flips and then deflates frames, alternating full pictures and deltas. Deltas are related to the currently rebuilt frame (not the reference), and since there is no coordinate system they contain exactly as many pixel as the keyframe.

Supports: BGR0, BGR24, RGB555

Variable Documentation

ff_screenpresso_decoder

AVCodec ff_screenpresso_decoder

Initial value:

= {
    .name           = "screenpresso",
    .long_name      = NULL_IF_CONFIG_SMALL("Screenpresso"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_SCREENPRESSO,
    .init           = screenpresso_init,
    .decode         = screenpresso_decode_frame,
    .close          = screenpresso_close,
    .priv_data_size = sizeof(ScreenpressoContext),
    .capabilities   = AV_CODEC_CAP_DR1,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE |
                      FF_CODEC_CAP_INIT_CLEANUP,
}