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  1. /*
  2.  * RTJpeg decoding functions
  3.  * copyright (c) 2006 Reimar Doeffinger
  4.  *
  5.  * This file is part of FFmpeg.
  6.  *
  7.  * FFmpeg is free software; you can redistribute it and/or
  8.  * modify it under the terms of the GNU Lesser General Public
  9.  * License as published by the Free Software Foundation; either
  10.  * version 2.1 of the License, or (at your option) any later version.
  11.  *
  12.  * FFmpeg is distributed in the hope that it will be useful,
  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15.  * Lesser General Public License for more details.
  16.  *
  17.  * You should have received a copy of the GNU Lesser General Public
  18.  * License along with FFmpeg; if not, write to the Free Software
  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20.  */
  21.  
  22. #ifndef AVCODEC_RTJPEG_H
  23. #define AVCODEC_RTJPEG_H
  24.  
  25. #include <stdint.h>
  26. #include "dsputil.h"
  27. #include "libavutil/mem.h"
  28.  
  29. #define RTJPEG_FILE_VERSION 0
  30. #define RTJPEG_HEADER_SIZE 12
  31.  
  32. typedef struct RTJpegContext {
  33.     int w, h;
  34.     DSPContext *dsp;
  35.     uint8_t scan[64];
  36.     uint32_t lquant[64];
  37.     uint32_t cquant[64];
  38.     DECLARE_ALIGNED(16, int16_t, block)[64];
  39. } RTJpegContext;
  40.  
  41. void ff_rtjpeg_decode_init(RTJpegContext *c, DSPContext *dsp,
  42.                         int width, int height,
  43.                         const uint32_t *lquant, const uint32_t *cquant);
  44.  
  45. int ff_rtjpeg_decode_frame_yuv420(RTJpegContext *c, AVFrame *f,
  46.                                const uint8_t *buf, int buf_size);
  47. #endif /* AVCODEC_RTJPEG_H */
  48.