1/* 2 * MJPEG encoder 3 * Copyright (c) 2000, 2001 Fabrice Bellard 4 * Copyright (c) 2003 Alex Beregszaszi 5 * Copyright (c) 2003-2004 Michael Niedermayer 6 * 7 * Support for external huffman table, various fixes (AVID workaround), 8 * aspecting, new decode_frame mechanism and apple mjpeg-b support 9 * by Alex Beregszaszi 10 * 11 * This file is part of FFmpeg. 12 * 13 * FFmpeg is free software; you can redistribute it and/or 14 * modify it under the terms of the GNU Lesser General Public 15 * License as published by the Free Software Foundation; either 16 * version 2.1 of the License, or (at your option) any later version. 17 * 18 * FFmpeg is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21 * Lesser General Public License for more details. 22 * 23 * You should have received a copy of the GNU Lesser General Public 24 * License along with FFmpeg; if not, write to the Free Software 25 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 26 */ 27 28/** 29 * @file 30 * MJPEG encoder. 31 */ 32 33#ifndef AVCODEC_MJPEGENC_H 34#define AVCODEC_MJPEGENC_H 35 36#include "dsputil.h" 37#include "mpegvideo.h" 38 39typedef struct MJpegContext { 40 uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing 41 uint16_t huff_code_dc_luminance[12]; 42 uint8_t huff_size_dc_chrominance[12]; 43 uint16_t huff_code_dc_chrominance[12]; 44 45 uint8_t huff_size_ac_luminance[256]; 46 uint16_t huff_code_ac_luminance[256]; 47 uint8_t huff_size_ac_chrominance[256]; 48 uint16_t huff_code_ac_chrominance[256]; 49} MJpegContext; 50 51int ff_mjpeg_encode_init(MpegEncContext *s); 52void ff_mjpeg_encode_close(MpegEncContext *s); 53void ff_mjpeg_encode_picture_header(MpegEncContext *s); 54void ff_mjpeg_encode_picture_trailer(MpegEncContext *s); 55void ff_mjpeg_encode_stuffing(PutBitContext *pbc); 56void ff_mjpeg_encode_dc(MpegEncContext *s, int val, 57 uint8_t *huff_size, uint16_t *huff_code); 58void ff_mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64]); 59 60#endif /* AVCODEC_MJPEGENC_H */ 61