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1 | /* |
2 | * Common Ut Video header | |
3 | * Copyright (c) 2011 Konstantin Shishkov | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #ifndef AVCODEC_UTVIDEO_H | |
23 | #define AVCODEC_UTVIDEO_H | |
24 | ||
25 | /** | |
26 | * @file | |
27 | * Common Ut Video header | |
28 | */ | |
29 | ||
30 | #include "libavutil/common.h" | |
31 | #include "avcodec.h" | |
32 | #include "bswapdsp.h" | |
33 | #include "huffyuvencdsp.h" | |
34 | ||
35 | enum { | |
36 | PRED_NONE = 0, | |
37 | PRED_LEFT, | |
38 | PRED_GRADIENT, | |
39 | PRED_MEDIAN, | |
40 | }; | |
41 | ||
42 | enum { | |
43 | COMP_NONE = 0, | |
44 | COMP_HUFF, | |
45 | }; | |
46 | ||
47 | /* | |
48 | * "Original format" markers. | |
49 | * Based on values gotten from the official VFW encoder. | |
50 | * They are not used during decoding, but they do have | |
51 | * an informative role on seeing what was input | |
52 | * to the encoder. | |
53 | */ | |
54 | enum { | |
55 | UTVIDEO_RGB = MKTAG(0x00, 0x00, 0x01, 0x18), | |
56 | UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18), | |
57 | UTVIDEO_420 = MKTAG('Y', 'V', '1', '2'), | |
58 | UTVIDEO_422 = MKTAG('Y', 'U', 'Y', '2'), | |
59 | }; | |
60 | ||
61 | /* Mapping of libavcodec prediction modes to Ut Video's */ | |
62 | extern const int ff_ut_pred_order[5]; | |
63 | ||
64 | /* Order of RGB(A) planes in Ut Video */ | |
65 | extern const int ff_ut_rgb_order[4]; | |
66 | ||
67 | typedef struct UtvideoContext { | |
68 | AVCodecContext *avctx; | |
69 | BswapDSPContext bdsp; | |
70 | HuffYUVEncDSPContext hdsp; | |
71 | ||
72 | uint32_t frame_info_size, flags, frame_info; | |
73 | int planes; | |
74 | int slices; | |
75 | int compression; | |
76 | int interlaced; | |
77 | int frame_pred; | |
78 | ||
79 | int slice_stride; | |
80 | uint8_t *slice_bits, *slice_buffer[4]; | |
81 | int slice_bits_size; | |
82 | } UtvideoContext; | |
83 | ||
84 | typedef struct HuffEntry { | |
85 | uint8_t sym; | |
86 | uint8_t len; | |
87 | uint32_t code; | |
88 | } HuffEntry; | |
89 | ||
90 | /* Compare huffman tree nodes */ | |
91 | int ff_ut_huff_cmp_len(const void *a, const void *b); | |
92 | ||
93 | #endif /* AVCODEC_UTVIDEO_H */ |