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  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 <stdint.h>
  37.  
  38. #include "mpegvideo.h"
  39.  
  40. typedef struct MJpegContext {
  41.     uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
  42.     uint16_t huff_code_dc_luminance[12];
  43.     uint8_t huff_size_dc_chrominance[12];
  44.     uint16_t huff_code_dc_chrominance[12];
  45.  
  46.     uint8_t huff_size_ac_luminance[256];
  47.     uint16_t huff_code_ac_luminance[256];
  48.     uint8_t huff_size_ac_chrominance[256];
  49.     uint16_t huff_code_ac_chrominance[256];
  50. } MJpegContext;
  51.  
  52. int  ff_mjpeg_encode_init(MpegEncContext *s);
  53. void ff_mjpeg_encode_close(MpegEncContext *s);
  54. void ff_mjpeg_encode_picture_header(MpegEncContext *s);
  55. void ff_mjpeg_encode_picture_trailer(MpegEncContext *s);
  56. void ff_mjpeg_encode_stuffing(MpegEncContext *s);
  57. void ff_mjpeg_encode_dc(MpegEncContext *s, int val,
  58.                         uint8_t *huff_size, uint16_t *huff_code);
  59. void ff_mjpeg_encode_mb(MpegEncContext *s, int16_t block[6][64]);
  60.  
  61. #endif /* AVCODEC_MJPEGENC_H */
  62.