FFmpeg: libavcodec/rtjpeg.h File Reference

FFmpeg

libavcodec

Data Structures | Macros | Functions

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().

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