gifdec.c File Reference

#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "bytestream.h"
#include "lzw.h"

Go to the source code of this file.

Data Structures
struct	GifState

Macros
#define	GCE_DISPOSAL_NONE   0
#define	GCE_DISPOSAL_INPLACE   1
#define	GCE_DISPOSAL_BACKGROUND   2
#define	GCE_DISPOSAL_RESTORE   3

Typedefs
typedef struct GifState	GifState

Functions
static int	gif_read_image (GifState *s)
static int	gif_read_extension (GifState *s)
static int	gif_read_header1 (GifState *s)
static int	gif_parse_next_image (GifState *s)
static av_cold int	gif_decode_init (AVCodecContext *avctx)
static int	gif_decode_frame (AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
static av_cold int	gif_decode_close (AVCodecContext *avctx)

Variables
static const uint8_t	gif87a_sig [6] = "GIF87a"
static const uint8_t	gif89a_sig [6] = "GIF89a"
AVCodec	ff_gif_decoder

Macro Definition Documentation

#define GCE_DISPOSAL_BACKGROUND   2

Definition at line 32 of file gifdec.c.

#define GCE_DISPOSAL_INPLACE   1

Definition at line 31 of file gifdec.c.

#define GCE_DISPOSAL_NONE   0

Definition at line 30 of file gifdec.c.

#define GCE_DISPOSAL_RESTORE   3

Definition at line 33 of file gifdec.c.

Typedef Documentation

typedef struct GifState GifState

Function Documentation

static av_cold int gif_decode_close ( AVCodecContext *  avctx )

static

Definition at line 313 of file gifdec.c.

static int gif_decode_frame ( AVCodecContext *  avctx, void *  data, int *  data_size, AVPacket *  avpkt  )

static

Definition at line 279 of file gifdec.c.

static av_cold int gif_decode_init ( AVCodecContext *  avctx )

static

Definition at line 266 of file gifdec.c.

static int gif_parse_next_image ( GifState *  s )

static

Definition at line 242 of file gifdec.c.

Referenced by gif_decode_frame().

static int gif_read_extension ( GifState *  s )

static

Definition at line 153 of file gifdec.c.

Referenced by gif_parse_next_image().

static int gif_read_header1 ( GifState *  s )

static

Definition at line 197 of file gifdec.c.

Referenced by gif_decode_frame().

static int gif_read_image ( GifState *  s )

static

Definition at line 65 of file gifdec.c.

Referenced by gif_parse_next_image().

Variable Documentation

AVCodec ff_gif_decoder

Initial value:

 {
    .name           = "gif",
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = CODEC_ID_GIF,
    .priv_data_size = sizeof(GifState),
    .init           = gif_decode_init,
    .close          = gif_decode_close,
    .decode         = gif_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
    .long_name = NULL_IF_CONFIG_SMALL("GIF (Graphics Interchange Format)"),
}

Definition at line 323 of file gifdec.c.

const uint8_t gif87a_sig[6] = "GIF87a"

static

Definition at line 62 of file gifdec.c.

Referenced by gif_read_header1().

const uint8_t gif89a_sig[6] = "GIF89a"

static

Definition at line 63 of file gifdec.c.

Referenced by gif_read_header1().