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utvideo.h
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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 "dsputil.h"
33 
34 enum {
35  PRED_NONE = 0,
39 };
40 
41 enum {
42  COMP_NONE = 0,
44 };
45 
46 /*
47  * "Original format" markers.
48  * Based on values gotten from the official VFW encoder.
49  * They are not used during decoding, but they do have
50  * an informative role on seeing what was input
51  * to the encoder.
52  */
53 enum {
54  UTVIDEO_RGB = MKTAG(0x00, 0x00, 0x01, 0x18),
55  UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18),
56  UTVIDEO_420 = MKTAG('Y', 'V', '1', '2'),
57  UTVIDEO_422 = MKTAG('Y', 'U', 'Y', '2'),
58 };
59 
60 /* Mapping of libavcodec prediction modes to Ut Video's */
61 extern const int ff_ut_pred_order[5];
62 
63 /* Order of RGB(A) planes in Ut Video */
64 extern const int ff_ut_rgb_order[4];
65 
66 typedef struct UtvideoContext {
69 
71  int planes;
72  int slices;
76 
81 
82 typedef struct HuffEntry {
85  uint32_t code;
86 } HuffEntry;
87 
88 /* Compare huffman tree nodes */
89 int ff_ut_huff_cmp_len(const void *a, const void *b);
90 
91 #endif /* AVCODEC_UTVIDEO_H */