You've already forked FFmpeg
mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2025-11-23 21:54:53 +02:00
7ad16a4410
Only used here and in a test tool. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/*
|
|
* MJPEG encoder
|
|
* Copyright (c) 2016 William Ma, Ted Ying, Jerry Jiang
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Huffman table generation for MJPEG encoder.
|
|
*/
|
|
|
|
#ifndef AVCODEC_MJPEGENC_HUFFMAN_H
|
|
#define AVCODEC_MJPEGENC_HUFFMAN_H
|
|
|
|
#include <stdint.h>
|
|
|
|
typedef struct MJpegEncHuffmanContext {
|
|
int val_count[256];
|
|
} MJpegEncHuffmanContext;
|
|
|
|
// Uses the package merge algorithm to compute the Huffman table.
|
|
void ff_mjpeg_encode_huffman_init(MJpegEncHuffmanContext *s);
|
|
static inline void ff_mjpeg_encode_huffman_increment(MJpegEncHuffmanContext *s,
|
|
uint8_t val)
|
|
{
|
|
s->val_count[val]++;
|
|
}
|
|
void ff_mjpeg_encode_huffman_close(MJpegEncHuffmanContext *s,
|
|
uint8_t bits[17], uint8_t val[],
|
|
int max_nval);
|
|
|
|
#endif /* AVCODEC_MJPEGENC_HUFFMAN_H */
|