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Commit | Line | Data |
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1 | const SWB_OFFSET_48K_LONG: [usize; 49+1] = [ | |
2 | 0, 4, 8, 12, 16, 20, 24, 28, | |
3 | 32, 36, 40, 48, 56, 64, 72, 80, | |
4 | 88, 96, 108, 120, 132, 144, 160, 176, | |
5 | 196, 216, 240, 264, 292, 320, 352, 384, | |
6 | 416, 448, 480, 512, 544, 576, 608, 640, | |
7 | 672, 704, 736, 768, 800, 832, 864, 896, | |
8 | 928, 1024 | |
9 | ]; | |
10 | const SWB_OFFSET_48K_SHORT: [usize; 14+1] = [ | |
11 | 0, 4, 8, 12, 16, 20, 28, 36, 44, 56, 68, 80, 96, 112, 128 | |
12 | ]; | |
13 | const SWB_OFFSET_32K_LONG: [usize; 51+1] = [ | |
14 | 0, 4, 8, 12, 16, 20, 24, 28, | |
15 | 32, 36, 40, 48, 56, 64, 72, 80, | |
16 | 88, 96, 108, 120, 132, 144, 160, 176, | |
17 | 196, 216, 240, 264, 292, 320, 352, 384, | |
18 | 416, 448, 480, 512, 544, 576, 608, 640, | |
19 | 672, 704, 736, 768, 800, 832, 864, 896, | |
20 | 928, 960, 992, 1024 | |
21 | ]; | |
22 | const SWB_OFFSET_8K_LONG: [usize; 40+1] = [ | |
23 | 0, 12, 24, 36, 48, 60, 72, 84, | |
24 | 96, 108, 120, 132, 144, 156, 172, 188, | |
25 | 204, 220, 236, 252, 268, 288, 308, 328, | |
26 | 348, 372, 396, 420, 448, 476, 508, 544, | |
27 | 580, 620, 664, 712, 764, 820, 880, 944, | |
28 | 1024 | |
29 | ]; | |
30 | const SWB_OFFSET_8K_SHORT: [usize; 15+1] = [ | |
31 | 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 60, 72, 88, 108, 128 | |
32 | ]; | |
33 | const SWB_OFFSET_16K_LONG: [usize; 43+1] = [ | |
34 | 0, 8, 16, 24, 32, 40, 48, 56, | |
35 | 64, 72, 80, 88, 100, 112, 124, 136, | |
36 | 148, 160, 172, 184, 196, 212, 228, 244, | |
37 | 260, 280, 300, 320, 344, 368, 396, 424, | |
38 | 456, 492, 532, 572, 616, 664, 716, 772, | |
39 | 832, 896, 960, 1024 | |
40 | ]; | |
41 | const SWB_OFFSET_16K_SHORT: [usize; 15+1] = [ | |
42 | 0, 4, 8, 12, 16, 20, 24, 28, 32, 40, 48, 60, 72, 88, 108, 128 | |
43 | ]; | |
44 | const SWB_OFFSET_24K_LONG: [usize; 47+1] = [ | |
45 | 0, 4, 8, 12, 16, 20, 24, 28, | |
46 | 32, 36, 40, 44, 52, 60, 68, 76, | |
47 | 84, 92, 100, 108, 116, 124, 136, 148, | |
48 | 160, 172, 188, 204, 220, 240, 260, 284, | |
49 | 308, 336, 364, 396, 432, 468, 508, 552, | |
50 | 600, 652, 704, 768, 832, 896, 960, 1024 | |
51 | ]; | |
52 | const SWB_OFFSET_24K_SHORT: [usize; 15+1] = [ | |
53 | 0, 4, 8, 12, 16, 20, 24, 28, 36, 44, 52, 64, 76, 92, 108, 128 | |
54 | ]; | |
55 | const SWB_OFFSET_64K_LONG: [usize; 47+1] = [ | |
56 | 0, 4, 8, 12, 16, 20, 24, 28, | |
57 | 32, 36, 40, 44, 48, 52, 56, 64, | |
58 | 72, 80, 88, 100, 112, 124, 140, 156, | |
59 | 172, 192, 216, 240, 268, 304, 344, 384, | |
60 | 424, 464, 504, 544, 584, 624, 664, 704, | |
61 | 744, 784, 824, 864, 904, 944, 984, 1024 | |
62 | ]; | |
63 | const SWB_OFFSET_64K_SHORT: [usize; 12+1] = [ | |
64 | 0, 4, 8, 12, 16, 20, 24, 32, 40, 48, 64, 92, 128 | |
65 | ]; | |
66 | const SWB_OFFSET_96K_LONG: [usize; 41+1] = [ | |
67 | 0, 4, 8, 12, 16, 20, 24, 28, | |
68 | 32, 36, 40, 44, 48, 52, 56, 64, | |
69 | 72, 80, 88, 96, 108, 120, 132, 144, | |
70 | 156, 172, 188, 212, 240, 276, 320, 384, | |
71 | 448, 512, 576, 640, 704, 768, 832, 896, | |
72 | 960, 1024 | |
73 | ]; | |
74 | ||
75 | #[derive(Clone,Copy)] | |
76 | pub struct GASubbandInfo { | |
77 | pub min_srate: u32, | |
78 | pub long_bands: &'static [usize], | |
79 | pub short_bands: &'static [usize], | |
80 | } | |
81 | ||
82 | impl GASubbandInfo { | |
83 | pub fn find(srate: u32) -> GASubbandInfo { | |
84 | for sbi in AAC_SUBBAND_INFO.iter() { | |
85 | if srate >= sbi.min_srate { | |
86 | return *sbi; | |
87 | } | |
88 | } | |
89 | unreachable!("") | |
90 | } | |
91 | pub fn find_idx(srate: u32) -> usize { | |
92 | for (i, sbi) in AAC_SUBBAND_INFO.iter().enumerate() { | |
93 | if srate >= sbi.min_srate { | |
94 | return i; | |
95 | } | |
96 | } | |
97 | unreachable!("") | |
98 | } | |
99 | } | |
100 | ||
101 | pub const AAC_SUBBAND_INFO: [GASubbandInfo; 12] = [ | |
102 | GASubbandInfo { min_srate: 92017, long_bands: &SWB_OFFSET_96K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //96K | |
103 | GASubbandInfo { min_srate: 75132, long_bands: &SWB_OFFSET_96K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //88.2K | |
104 | GASubbandInfo { min_srate: 55426, long_bands: &SWB_OFFSET_64K_LONG, short_bands: &SWB_OFFSET_64K_SHORT }, //64K | |
105 | GASubbandInfo { min_srate: 46009, long_bands: &SWB_OFFSET_48K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //48K | |
106 | GASubbandInfo { min_srate: 37566, long_bands: &SWB_OFFSET_48K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //44.1K | |
107 | GASubbandInfo { min_srate: 27713, long_bands: &SWB_OFFSET_32K_LONG, short_bands: &SWB_OFFSET_48K_SHORT }, //32K | |
108 | GASubbandInfo { min_srate: 23004, long_bands: &SWB_OFFSET_24K_LONG, short_bands: &SWB_OFFSET_24K_SHORT }, //24K | |
109 | GASubbandInfo { min_srate: 18783, long_bands: &SWB_OFFSET_24K_LONG, short_bands: &SWB_OFFSET_24K_SHORT }, //22.05K | |
110 | GASubbandInfo { min_srate: 13856, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //16K | |
111 | GASubbandInfo { min_srate: 11502, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //12K | |
112 | GASubbandInfo { min_srate: 9391, long_bands: &SWB_OFFSET_16K_LONG, short_bands: &SWB_OFFSET_16K_SHORT }, //11.025K | |
113 | GASubbandInfo { min_srate: 0, long_bands: &SWB_OFFSET_8K_LONG, short_bands: &SWB_OFFSET_8K_SHORT }, //8K | |
114 | ]; |