mpegvideo: move ff_draw_horiz_band() to mpegutils.c
[libav.git] / libavcodec / mpegutils.h
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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
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24#include <stdint.h>
25
26#include "libavutil/frame.h"
27
28#include "avcodec.h"
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29#include "version.h"
30
be039278 31
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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
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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 */
123void 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
e0c16e4e 127#endif /* AVCODEC_PICTTYPE_H */