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1 | /* |
2 | * Mpeg video formats-related defines and utility functions | |
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_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 */ |