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FFmpeg/libavcodec/mjpegenc.h

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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 mjpegenc.h

  30.  * MJPEG encoder.

  31.  */

  32. 

  33. #ifndef FFMPEG_MJPEGENC_H

  34. #define FFMPEG_MJPEGENC_H

  35. 

  36. #include "dsputil.h"

  37. #include "mpegvideo.h"

  38. 

  39. typedef 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. 

  51. int  ff_mjpeg_encode_init(MpegEncContext *s);

  52. void ff_mjpeg_encode_close(MpegEncContext *s);

  53. void ff_mjpeg_encode_picture_header(MpegEncContext *s);

  54. void ff_mjpeg_encode_picture_trailer(MpegEncContext *s);

  55. void ff_mjpeg_encode_stuffing(PutBitContext *pbc);

  56. void ff_mjpeg_encode_dc(MpegEncContext *s, int val,

  57.                         uint8_t *huff_size, uint16_t *huff_code);

  58. void ff_mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64]);

  59. 

  60. #endif /* FFMPEG_MJPEGENC_H */