libavformat/gif.c File Reference

#include "avformat.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavcodec/put_bits.h"

Go to the source code of this file.

Data Structures
struct	rgb_triplet
struct	GIFContext
Defines
#define	BITSTREAM_WRITER_LE
#define	GIF_CHUNKS   100
#define	GIF_ADD_APP_HEADER
#define	OFFSET(x)   offsetof(GIFContext, x)
#define	ENC   AV_OPT_FLAG_ENCODING_PARAM
Functions
static int	gif_image_write_header (AVIOContext *pb, int width, int height, int loop_count, uint32_t *palette)
static unsigned char	gif_clut_index (uint8_t r, uint8_t g, uint8_t b)
static int	gif_image_write_image (AVIOContext *pb, int x1, int y1, int width, int height, const uint8_t *buf, int linesize, int pix_fmt)
static int	gif_write_header (AVFormatContext *s)
static int	gif_write_video (AVFormatContext *s, AVCodecContext *enc, const uint8_t *buf, int size)
static int	gif_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	gif_write_trailer (AVFormatContext *s)
Variables
static const rgb_triplet	gif_clut [216]
static const AVOption	options []
static const AVClass	gif_muxer_class
AVOutputFormat	ff_gif_muxer

---

Define Documentation

#define BITSTREAM_WRITER_LE

Definition at line 48 of file gif.c.

#define ENC   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 355 of file gif.c.

#define GIF_ADD_APP_HEADER

Definition at line 59 of file gif.c.

#define GIF_CHUNKS   100

Definition at line 53 of file gif.c.

Referenced by gif_image_write_image().

#define OFFSET

(

x

)

offsetof(GIFContext, x)

Definition at line 354 of file gif.c.

---

Function Documentation

static unsigned char gif_clut_index	(	uint8_t	r,
		uint8_t	g,
		uint8_t	b
	)			[inline, static]

Definition at line 187 of file gif.c.

Referenced by gif_image_write_image().

static int gif_image_write_header	(	AVIOContext *	pb,
		int	width,
		int	height,
		int	loop_count,
		uint32_t *	palette
	)			[static]

Definition at line 121 of file gif.c.

static int gif_image_write_image	(	AVIOContext *	pb,
		int	x1,
		int	y1,
		int	width,
		int	height,
		const uint8_t *	buf,
		int	linesize,
		int	pix_fmt
	)			[static]

Definition at line 192 of file gif.c.

static int gif_write_header

(

AVFormatContext *

s

)

[static]

Definition at line 263 of file gif.c.

static int gif_write_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)			[static]

Definition at line 336 of file gif.c.

static int gif_write_trailer

(

AVFormatContext *

s

)

[static]

Definition at line 345 of file gif.c.

static int gif_write_video	(	AVFormatContext *	s,
		AVCodecContext *	enc,
		const uint8_t *	buf,
		int	size
	)			[static]

Definition at line 305 of file gif.c.

Referenced by gif_write_packet().

---

Variable Documentation

AVOutputFormat ff_gif_muxer

Initial value:

 {
    .name           = "gif",
    .long_name      = NULL_IF_CONFIG_SMALL("GIF Animation"),
    .mime_type      = "image/gif",
    .extensions     = "gif",
    .priv_data_size = sizeof(GIFContext),
    .audio_codec    = AV_CODEC_ID_NONE,
    .video_codec    = AV_CODEC_ID_RAWVIDEO,
    .write_header   = gif_write_header,
    .write_packet   = gif_write_packet,
    .write_trailer  = gif_write_trailer,
    .priv_class     = &gif_muxer_class,
}

Definition at line 369 of file gif.c.

const rgb_triplet gif_clut[216] [static]

Definition at line 81 of file gif.c.

const AVClass gif_muxer_class [static]

Initial value:

 {
    .class_name = "GIF muxer",
    .item_name  = av_default_item_name,
    .version    = LIBAVUTIL_VERSION_INT,
    .option     = options,
}

Definition at line 362 of file gif.c.

const AVOption options[] [static]

Initial value:

 {
    { "loop", "Number of times to loop the output.", OFFSET(loop),
      AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 65535, ENC },
    { NULL },
}

Definition at line 356 of file gif.c.