mjpegenc.c File Reference

MJPEG encoder. More...

#include <assert.h>
#include "libavutil/pixdesc.h"
#include "avcodec.h"
#include "mpegvideo.h"
#include "mjpeg.h"
#include "mjpegenc.h"

Go to the source code of this file.

Functions
av_cold int	ff_mjpeg_encode_init (MpegEncContext *s)
void	ff_mjpeg_encode_close (MpegEncContext *s)
static int	put_huffman_table (PutBitContext *p, int table_class, int table_id, const uint8_t *bits_table, const uint8_t *value_table)
static void	jpeg_table_header (PutBitContext *p, ScanTable *intra_scantable, uint16_t intra_matrix[64])
static void	jpeg_put_comments (AVCodecContext *avctx, PutBitContext *p)
void	ff_mjpeg_encode_picture_header (AVCodecContext *avctx, PutBitContext *pb, ScanTable *intra_scantable, uint16_t intra_matrix[64])
static void	escape_FF (PutBitContext *pb, int start)
void	ff_mjpeg_encode_stuffing (PutBitContext *pbc)
void	ff_mjpeg_encode_picture_trailer (PutBitContext *pb, int header_bits)
void	ff_mjpeg_encode_dc (PutBitContext *pb, int val, uint8_t *huff_size, uint16_t *huff_code)
static void	encode_block (MpegEncContext *s, int16_t *block, int n)
void	ff_mjpeg_encode_mb (MpegEncContext *s, int16_t block[6][64])

Variables
AVCodec	ff_mjpeg_encoder

Detailed Description

MJPEG encoder.

Definition in file mjpegenc.c.

Function Documentation

av_cold int ff_mjpeg_encode_init

(

MpegEncContext *

s

)

Definition at line 42 of file mjpegenc.c.

Referenced by ff_MPV_encode_init().

void ff_mjpeg_encode_close

(

MpegEncContext *

s

)

Definition at line 75 of file mjpegenc.c.

Referenced by ff_MPV_encode_end().

static int put_huffman_table ( PutBitContext *  p, int  table_class, int  table_id, const uint8_t *  bits_table, const uint8_t *  value_table  )

static

Definition at line 81 of file mjpegenc.c.

Referenced by jpeg_table_header().

static void jpeg_table_header ( PutBitContext *  p, ScanTable *  intra_scantable, uint16_t  intra_matrix[64]  )

static

Definition at line 101 of file mjpegenc.c.

Referenced by ff_mjpeg_encode_picture_header().

static void jpeg_put_comments ( AVCodecContext *  avctx, PutBitContext *  p  )

static

Definition at line 135 of file mjpegenc.c.

Referenced by ff_mjpeg_encode_picture_header().

void ff_mjpeg_encode_picture_header	(	AVCodecContext *	avctx,
		PutBitContext *	pb,
		ScanTable *	intra_scantable,
		uint16_t	intra_matrix[64]
	)

Definition at line 177 of file mjpegenc.c.

Referenced by encode_picture(), and ljpeg_encode_frame().

static void escape_FF ( PutBitContext *  pb, int  start  )

static

Definition at line 272 of file mjpegenc.c.

Referenced by ff_mjpeg_encode_picture_trailer().

void ff_mjpeg_encode_stuffing

(

PutBitContext *

pbc

)

Definition at line 324 of file mjpegenc.c.

Referenced by ff_mjpeg_encode_picture_trailer(), and write_slice_end().

void ff_mjpeg_encode_picture_trailer	(	PutBitContext *	pb,
		int	header_bits
	)

Definition at line 331 of file mjpegenc.c.

Referenced by ff_MPV_encode_picture(), and ljpeg_encode_frame().

void ff_mjpeg_encode_dc	(	PutBitContext *	pb,
		int	val,
		uint8_t *	huff_size,
		uint16_t *	huff_code
	)

Definition at line 343 of file mjpegenc.c.

Referenced by encode_block(), ljpeg_encode_bgr(), and ljpeg_encode_yuv_mb().

static void encode_block ( MpegEncContext *  s, int16_t *  block, int  n  )

static

Definition at line 365 of file mjpegenc.c.

Referenced by ff_mjpeg_encode_mb().

void ff_mjpeg_encode_mb	(	MpegEncContext *	s,
		int16_t	block[6][64]
	)

Definition at line 423 of file mjpegenc.c.

Referenced by encode_mb_internal().

Variable Documentation

AVCodec ff_mjpeg_encoder

Initial value:

 {
    .name           = "mjpeg",
    .long_name      = NULL_IF_CONFIG_SMALL("MJPEG (Motion JPEG)"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_MJPEG,
    .priv_data_size = sizeof(MpegEncContext),
    .init           = ff_MPV_encode_init,
    .encode2        = ff_MPV_encode_picture,
    .close          = ff_MPV_encode_end,
    .pix_fmts       = (const enum AVPixelFormat[]){
        AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_NONE
    },
}

Definition at line 440 of file mjpegenc.c.