mpegvideo: move ff_draw_horiz_band() to mpegutils.c
[libav.git] / libavcodec / mpegutils.h
1 /*
2 * Mpeg video formats-related defines and utility functions
3 *
4 * This file is part of Libav.
5 *
6 * Libav 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 * Libav 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 Libav; 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_MPEGUTILS_H
22 #define AVCODEC_MPEGUTILS_H
23
24 #include <stdint.h>
25
26 #include "libavutil/frame.h"
27
28 #include "avcodec.h"
29 #include "version.h"
30
31
32 /* picture type */
33 #define PICT_TOP_FIELD 1
34 #define PICT_BOTTOM_FIELD 2
35 #define PICT_FRAME 3
36
37 /**
38 * Value of Picture.reference when Picture is not a reference picture, but
39 * is held for delayed output.
40 */
41 #define DELAYED_PIC_REF 4
42
43
44 /* MB types */
45 #if !FF_API_MB_TYPE
46 #define MB_TYPE_INTRA4x4 (1 << 0)
47 #define MB_TYPE_INTRA16x16 (1 << 1) // FIXME H.264-specific
48 #define MB_TYPE_INTRA_PCM (1 << 2) // FIXME H.264-specific
49 #define MB_TYPE_16x16 (1 << 3)
50 #define MB_TYPE_16x8 (1 << 4)
51 #define MB_TYPE_8x16 (1 << 5)
52 #define MB_TYPE_8x8 (1 << 6)
53 #define MB_TYPE_INTERLACED (1 << 7)
54 #define MB_TYPE_DIRECT2 (1 << 8) // FIXME
55 #define MB_TYPE_ACPRED (1 << 9)
56 #define MB_TYPE_GMC (1 << 10)
57 #define MB_TYPE_SKIP (1 << 11)
58 #define MB_TYPE_P0L0 (1 << 12)
59 #define MB_TYPE_P1L0 (1 << 13)
60 #define MB_TYPE_P0L1 (1 << 14)
61 #define MB_TYPE_P1L1 (1 << 15)
62 #define MB_TYPE_L0 (MB_TYPE_P0L0 | MB_TYPE_P1L0)
63 #define MB_TYPE_L1 (MB_TYPE_P0L1 | MB_TYPE_P1L1)
64 #define MB_TYPE_L0L1 (MB_TYPE_L0 | MB_TYPE_L1)
65 #define MB_TYPE_QUANT (1 << 16)
66 #define MB_TYPE_CBP (1 << 17)
67 #endif
68
69 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 // default mb_type if there is just one type
70
71 #define IS_INTRA4x4(a) ((a) & MB_TYPE_INTRA4x4)
72 #define IS_INTRA16x16(a) ((a) & MB_TYPE_INTRA16x16)
73 #define IS_PCM(a) ((a) & MB_TYPE_INTRA_PCM)
74 #define IS_INTRA(a) ((a) & 7)
75 #define IS_INTER(a) ((a) & (MB_TYPE_16x16 | MB_TYPE_16x8 | \
76 MB_TYPE_8x16 | MB_TYPE_8x8))
77 #define IS_SKIP(a) ((a) & MB_TYPE_SKIP)
78 #define IS_INTRA_PCM(a) ((a) & MB_TYPE_INTRA_PCM)
79 #define IS_INTERLACED(a) ((a) & MB_TYPE_INTERLACED)
80 #define IS_DIRECT(a) ((a) & MB_TYPE_DIRECT2)
81 #define IS_GMC(a) ((a) & MB_TYPE_GMC)
82 #define IS_16X16(a) ((a) & MB_TYPE_16x16)
83 #define IS_16X8(a) ((a) & MB_TYPE_16x8)
84 #define IS_8X16(a) ((a) & MB_TYPE_8x16)
85 #define IS_8X8(a) ((a) & MB_TYPE_8x8)
86 #define IS_SUB_8X8(a) ((a) & MB_TYPE_16x16) // note reused
87 #define IS_SUB_8X4(a) ((a) & MB_TYPE_16x8) // note reused
88 #define IS_SUB_4X8(a) ((a) & MB_TYPE_8x16) // note reused
89 #define IS_SUB_4X4(a) ((a) & MB_TYPE_8x8) // note reused
90 #define IS_ACPRED(a) ((a) & MB_TYPE_ACPRED)
91 #define IS_QUANT(a) ((a) & MB_TYPE_QUANT)
92 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0 << ((part) + 2 * (list))))
93
94 // does this mb use listX, note does not work if subMBs
95 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0 | MB_TYPE_P1L0) << (2 * (list))))
96
97 #define HAS_CBP(a) ((a) & MB_TYPE_CBP)
98
99 /* MB types for encoding */
100 #define CANDIDATE_MB_TYPE_INTRA (1 << 0)
101 #define CANDIDATE_MB_TYPE_INTER (1 << 1)
102 #define CANDIDATE_MB_TYPE_INTER4V (1 << 2)
103 #define CANDIDATE_MB_TYPE_SKIPPED (1 << 3)
104
105 #define CANDIDATE_MB_TYPE_DIRECT (1 << 4)
106 #define CANDIDATE_MB_TYPE_FORWARD (1 << 5)
107 #define CANDIDATE_MB_TYPE_BACKWARD (1 << 6)
108 #define CANDIDATE_MB_TYPE_BIDIR (1 << 7)
109
110 #define CANDIDATE_MB_TYPE_INTER_I (1 << 8)
111 #define CANDIDATE_MB_TYPE_FORWARD_I (1 << 9)
112 #define CANDIDATE_MB_TYPE_BACKWARD_I (1 << 10)
113 #define CANDIDATE_MB_TYPE_BIDIR_I (1 << 11)
114
115 #define CANDIDATE_MB_TYPE_DIRECT0 (1 << 12)
116
117
118 /**
119 * Draw a horizontal band if supported.
120 *
121 * @param h is the normal height, this will be reduced automatically if needed
122 */
123 void ff_draw_horiz_band(AVCodecContext *avctx, AVFrame *cur, AVFrame *last,
124 int y, int h, int picture_structure, int first_field,
125 int low_delay);
126
127 #endif /* AVCODEC_PICTTYPE_H */