libavcodec/rtjpeg.h

   1 /*
   2  * RTJpeg decoding functions
   3  * copyright (c) 2006 Reimar Doeffinger
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav 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  * Libav 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 Libav; 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 */