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 **ref_picture, op_pixels_func (*pix_op)[4],
43 int motion_x, int motion_y, int h);
44
45
wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)46 static av_always_inline int wmv2_get_cbp_table_index(MpegEncContext *s, int cbp_index)
47 {
48 static const uint8_t map[3][3] = {
49 { 0, 2, 1 },
50 { 1, 0, 2 },
51 { 2, 1, 0 },
52 };
53
54 return map[(s->qscale > 10) + (s->qscale > 20)][cbp_index];
55 }
56
57 #endif /* AVCODEC_WMV2_H */
58