blob: bd96bc9ee34ee2e12921f6a31c346cdd4c6aa5bc
1 | /* |
2 | * DCA compatible decoder |
3 | * Copyright (C) 2004 Gildas Bazin |
4 | * Copyright (C) 2004 Benjamin Zores |
5 | * Copyright (C) 2006 Benjamin Larsson |
6 | * Copyright (C) 2007 Konstantin Shishkov |
7 | * Copyright (C) 2016 foo86 |
8 | * |
9 | * This file is part of FFmpeg. |
10 | * |
11 | * FFmpeg is free software; you can redistribute it and/or |
12 | * modify it under the terms of the GNU Lesser General Public |
13 | * License as published by the Free Software Foundation; either |
14 | * version 2.1 of the License, or (at your option) any later version. |
15 | * |
16 | * FFmpeg is distributed in the hope that it will be useful, |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
19 | * Lesser General Public License for more details. |
20 | * |
21 | * You should have received a copy of the GNU Lesser General Public |
22 | * License along with FFmpeg; if not, write to the Free Software |
23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
24 | */ |
25 | |
26 | #ifndef AVCODEC_DCA_H |
27 | #define AVCODEC_DCA_H |
28 | |
29 | #include <stdint.h> |
30 | |
31 | #include "libavutil/common.h" |
32 | #include "libavutil/internal.h" |
33 | #include "libavutil/intreadwrite.h" |
34 | |
35 | enum DCASpeaker { |
36 | DCA_SPEAKER_C, DCA_SPEAKER_L, DCA_SPEAKER_R, DCA_SPEAKER_Ls, |
37 | DCA_SPEAKER_Rs, DCA_SPEAKER_LFE1, DCA_SPEAKER_Cs, DCA_SPEAKER_Lsr, |
38 | DCA_SPEAKER_Rsr, DCA_SPEAKER_Lss, DCA_SPEAKER_Rss, DCA_SPEAKER_Lc, |
39 | DCA_SPEAKER_Rc, DCA_SPEAKER_Lh, DCA_SPEAKER_Ch, DCA_SPEAKER_Rh, |
40 | DCA_SPEAKER_LFE2, DCA_SPEAKER_Lw, DCA_SPEAKER_Rw, DCA_SPEAKER_Oh, |
41 | DCA_SPEAKER_Lhs, DCA_SPEAKER_Rhs, DCA_SPEAKER_Chr, DCA_SPEAKER_Lhr, |
42 | DCA_SPEAKER_Rhr, DCA_SPEAKER_Cl, DCA_SPEAKER_Ll, DCA_SPEAKER_Rl, |
43 | DCA_SPEAKER_RSV1, DCA_SPEAKER_RSV2, DCA_SPEAKER_RSV3, DCA_SPEAKER_RSV4, |
44 | |
45 | DCA_SPEAKER_COUNT |
46 | }; |
47 | |
48 | enum DCASpeakerMask { |
49 | DCA_SPEAKER_MASK_C = 0x00000001, |
50 | DCA_SPEAKER_MASK_L = 0x00000002, |
51 | DCA_SPEAKER_MASK_R = 0x00000004, |
52 | DCA_SPEAKER_MASK_Ls = 0x00000008, |
53 | DCA_SPEAKER_MASK_Rs = 0x00000010, |
54 | DCA_SPEAKER_MASK_LFE1 = 0x00000020, |
55 | DCA_SPEAKER_MASK_Cs = 0x00000040, |
56 | DCA_SPEAKER_MASK_Lsr = 0x00000080, |
57 | DCA_SPEAKER_MASK_Rsr = 0x00000100, |
58 | DCA_SPEAKER_MASK_Lss = 0x00000200, |
59 | DCA_SPEAKER_MASK_Rss = 0x00000400, |
60 | DCA_SPEAKER_MASK_Lc = 0x00000800, |
61 | DCA_SPEAKER_MASK_Rc = 0x00001000, |
62 | DCA_SPEAKER_MASK_Lh = 0x00002000, |
63 | DCA_SPEAKER_MASK_Ch = 0x00004000, |
64 | DCA_SPEAKER_MASK_Rh = 0x00008000, |
65 | DCA_SPEAKER_MASK_LFE2 = 0x00010000, |
66 | DCA_SPEAKER_MASK_Lw = 0x00020000, |
67 | DCA_SPEAKER_MASK_Rw = 0x00040000, |
68 | DCA_SPEAKER_MASK_Oh = 0x00080000, |
69 | DCA_SPEAKER_MASK_Lhs = 0x00100000, |
70 | DCA_SPEAKER_MASK_Rhs = 0x00200000, |
71 | DCA_SPEAKER_MASK_Chr = 0x00400000, |
72 | DCA_SPEAKER_MASK_Lhr = 0x00800000, |
73 | DCA_SPEAKER_MASK_Rhr = 0x01000000, |
74 | DCA_SPEAKER_MASK_Cl = 0x02000000, |
75 | DCA_SPEAKER_MASK_Ll = 0x04000000, |
76 | DCA_SPEAKER_MASK_Rl = 0x08000000, |
77 | }; |
78 | |
79 | #define DCA_SPEAKER_LAYOUT_MONO (DCA_SPEAKER_MASK_C) |
80 | #define DCA_SPEAKER_LAYOUT_STEREO (DCA_SPEAKER_MASK_L | DCA_SPEAKER_MASK_R) |
81 | #define DCA_SPEAKER_LAYOUT_2POINT1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_LFE1) |
82 | #define DCA_SPEAKER_LAYOUT_3_0 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_C) |
83 | #define DCA_SPEAKER_LAYOUT_2_1 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Cs) |
84 | #define DCA_SPEAKER_LAYOUT_3_1 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Cs) |
85 | #define DCA_SPEAKER_LAYOUT_2_2 (DCA_SPEAKER_LAYOUT_STEREO | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs) |
86 | #define DCA_SPEAKER_LAYOUT_5POINT0 (DCA_SPEAKER_LAYOUT_3_0 | DCA_SPEAKER_MASK_Ls | DCA_SPEAKER_MASK_Rs) |
87 | #define DCA_SPEAKER_LAYOUT_5POINT1 (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_LFE1) |
88 | #define DCA_SPEAKER_LAYOUT_7POINT0_WIDE (DCA_SPEAKER_LAYOUT_5POINT0 | DCA_SPEAKER_MASK_Lw | DCA_SPEAKER_MASK_Rw) |
89 | #define DCA_SPEAKER_LAYOUT_7POINT1_WIDE (DCA_SPEAKER_LAYOUT_7POINT0_WIDE | DCA_SPEAKER_MASK_LFE1) |
90 | |
91 | #define DCA_HAS_STEREO(mask) \ |
92 | ((mask & DCA_SPEAKER_LAYOUT_STEREO) == DCA_SPEAKER_LAYOUT_STEREO) |
93 | |
94 | enum DCASpeakerPair { |
95 | DCA_SPEAKER_PAIR_C = 0x0001, |
96 | DCA_SPEAKER_PAIR_LR = 0x0002, |
97 | DCA_SPEAKER_PAIR_LsRs = 0x0004, |
98 | DCA_SPEAKER_PAIR_LFE1 = 0x0008, |
99 | DCA_SPEAKER_PAIR_Cs = 0x0010, |
100 | DCA_SPEAKER_PAIR_LhRh = 0x0020, |
101 | DCA_SPEAKER_PAIR_LsrRsr = 0x0040, |
102 | DCA_SPEAKER_PAIR_Ch = 0x0080, |
103 | DCA_SPEAKER_PAIR_Oh = 0x0100, |
104 | DCA_SPEAKER_PAIR_LcRc = 0x0200, |
105 | DCA_SPEAKER_PAIR_LwRw = 0x0400, |
106 | DCA_SPEAKER_PAIR_LssRss = 0x0800, |
107 | DCA_SPEAKER_PAIR_LFE2 = 0x1000, |
108 | DCA_SPEAKER_PAIR_LhsRhs = 0x2000, |
109 | DCA_SPEAKER_PAIR_Chr = 0x4000, |
110 | DCA_SPEAKER_PAIR_LhrRhr = 0x8000 |
111 | }; |
112 | |
113 | /** |
114 | * Return number of individual channels in DCASpeakerPair mask |
115 | */ |
116 | static inline int ff_dca_count_chs_for_mask(unsigned int mask) |
117 | { |
118 | return av_popcount((mask & 0xffff) | ((mask & 0xae66) << 16)); |
119 | } |
120 | |
121 | enum DCARepresentationType { |
122 | DCA_REPR_TYPE_LtRt = 2, |
123 | DCA_REPR_TYPE_LhRh = 3 |
124 | }; |
125 | |
126 | enum DCAExtensionMask { |
127 | DCA_CSS_CORE = 0x001, |
128 | DCA_CSS_XXCH = 0x002, |
129 | DCA_CSS_X96 = 0x004, |
130 | DCA_CSS_XCH = 0x008, |
131 | DCA_CSS_MASK = 0x00f, |
132 | DCA_EXSS_CORE = 0x010, |
133 | DCA_EXSS_XBR = 0x020, |
134 | DCA_EXSS_XXCH = 0x040, |
135 | DCA_EXSS_X96 = 0x080, |
136 | DCA_EXSS_LBR = 0x100, |
137 | DCA_EXSS_XLL = 0x200, |
138 | DCA_EXSS_RSV1 = 0x400, |
139 | DCA_EXSS_RSV2 = 0x800, |
140 | DCA_EXSS_MASK = 0xff0, |
141 | }; |
142 | |
143 | enum DCADownMixType { |
144 | DCA_DMIX_TYPE_1_0, |
145 | DCA_DMIX_TYPE_LoRo, |
146 | DCA_DMIX_TYPE_LtRt, |
147 | DCA_DMIX_TYPE_3_0, |
148 | DCA_DMIX_TYPE_2_1, |
149 | DCA_DMIX_TYPE_2_2, |
150 | DCA_DMIX_TYPE_3_1, |
151 | |
152 | DCA_DMIX_TYPE_COUNT |
153 | }; |
154 | |
155 | extern av_export const uint32_t avpriv_dca_sample_rates[16]; |
156 | |
157 | extern const uint32_t ff_dca_sampling_freqs[16]; |
158 | extern const uint8_t ff_dca_freq_ranges[16]; |
159 | |
160 | /** |
161 | * Convert bitstream to one representation based on sync marker |
162 | */ |
163 | int avpriv_dca_convert_bitstream(const uint8_t *src, int src_size, uint8_t *dst, |
164 | int max_size); |
165 | |
166 | #endif /* AVCODEC_DCA_H */ |
167 |