rtjpeg.h File Reference

#include <stdint.h>
#include "libavutil/mem.h"
#include "idctdsp.h"

Go to the source code of this file.

Data Structures
struct	RTJpegContext

Macros
#define	RTJPEG_FILE_VERSION   0
#define	RTJPEG_HEADER_SIZE   12

Functions
void	ff_rtjpeg_init (RTJpegContext *c, AVCodecContext *avctx)
void	ff_rtjpeg_decode_init (RTJpegContext *c, int width, int height, const uint32_t *lquant, const uint32_t *cquant)
	initialize an RTJpegContext, may be called multiple times
int	ff_rtjpeg_decode_frame_yuv420 (RTJpegContext *c, AVFrame *f, const uint8_t *buf, int buf_size)
	decode one rtjpeg YUV420 frame

Macro Definition Documentation

#define RTJPEG_FILE_VERSION   0

Definition at line 30 of file rtjpeg.h.

#define RTJPEG_HEADER_SIZE   12

Definition at line 31 of file rtjpeg.h.

Referenced by codec_reinit(), and decode_frame().

Function Documentation

void ff_rtjpeg_init	(	RTJpegContext *	c,
		AVCodecContext *	avctx
	)

Definition at line 170 of file rtjpeg.c.

Referenced by decode_init().

void ff_rtjpeg_decode_init	(	RTJpegContext *	c,
		int	width,
		int	height,
		const uint32_t *	lquant,
		const uint32_t *	cquant
	)

initialize an RTJpegContext, may be called multiple times

Parameters

c	context to initialize
width	width of image, will be rounded down to the nearest multiple of 16 for decoding
height	height of image, will be rounded down to the nearest multiple of 16 for decoding
lquant	luma quantization table to use
cquant	chroma quantization table to use

Definition at line 158 of file rtjpeg.c.

Referenced by codec_reinit(), and decode_frame().

int ff_rtjpeg_decode_frame_yuv420	(	RTJpegContext *	c,
		AVFrame *	f,
		const uint8_t *	buf,
		int	buf_size
	)

decode one rtjpeg YUV420 frame

Parameters

c	context, must be initialized via ff_rtjpeg_decode_init
f	AVFrame to place decoded frame into. If parts of the frame are not coded they are left unchanged, so consider initializing it
buf	buffer containing input data
buf_size	length of input data in bytes

Returns

number of bytes consumed from the input buffer

Definition at line 106 of file rtjpeg.c.

Referenced by decode_frame().