libavcodec/wmv2.h

   1 /*
   2  * Copyright (c) 2002 The FFmpeg Project
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef AVCODEC_WMV2_H
  22 #define AVCODEC_WMV2_H
  23
  24 #include "mpegvideo.h"
  25 #include "wmv2dsp.h"
  26
  27 #define SKIP_TYPE_NONE 0
  28 #define SKIP_TYPE_MPEG 1
  29 #define SKIP_TYPE_ROW  2
  30 #define SKIP_TYPE_COL  3
  31
  32
  33 typedef struct WMV2Context {
  34     WMV2DSPContext wdsp;
  35     int hshift;
  36 } WMV2Context;
  37
  38 void ff_wmv2_common_init(MpegEncContext *s);
  39
  40 void ff_mspel_motion(MpegEncContext *s,
  41                      uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
  42                      uint8_t *const *ref_picture,
  43                      const op_pixels_func (*pix_op)[4],
  44                      int motion_x, int motion_y, int h);
  45
  46
  47 static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
  48 {
  49     static const uint8_t map[3][3] = {
  50         { 0, 2, 1 },
  51         { 1, 0, 2 },
  52         { 2, 1, 0 },
  53     };
  54
  55     return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index];
  56 }
  57
  58 #endif /* AVCODEC_WMV2_H */