blob: 027fc7ed239f79c70f629898b3a8273a03209810
1 | /* |
2 | * Common code between Nellymoser encoder and decoder |
3 | * Copyright (c) 2007 a840bda5870ba11f19698ff6eb9581dfb0f95fa5, |
4 | * 539459aeb7d425140b62a3ec7dbf6dc8e408a306, and |
5 | * 520e17cd55896441042b14df2566a6eb610ed444 |
6 | * Copyright (c) 2007 Loic Minier <lool at dooz.org> |
7 | * Benjamin Larsson |
8 | * |
9 | * Permission is hereby granted, free of charge, to any person obtaining a |
10 | * copy of this software and associated documentation files (the "Software"), |
11 | * to deal in the Software without restriction, including without limitation |
12 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
13 | * and/or sell copies of the Software, and to permit persons to whom the |
14 | * Software is furnished to do so, subject to the following conditions: |
15 | * |
16 | * The above copyright notice and this permission notice shall be included in |
17 | * all copies or substantial portions of the Software. |
18 | * |
19 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
20 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
21 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
22 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
23 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
24 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
25 | * DEALINGS IN THE SOFTWARE. |
26 | */ |
27 | |
28 | /** |
29 | * @file |
30 | * The 3 alphanumeric copyright notices are md5summed they are from the original |
31 | * implementors. The original code is available from http://code.google.com/p/nelly2pcm/ |
32 | */ |
33 | |
34 | #ifndef AVCODEC_NELLYMOSER_H |
35 | #define AVCODEC_NELLYMOSER_H |
36 | |
37 | #include "avcodec.h" |
38 | |
39 | #define NELLY_BANDS 23 |
40 | #define NELLY_BLOCK_LEN 64 |
41 | #define NELLY_HEADER_BITS 116 |
42 | #define NELLY_DETAIL_BITS 198 |
43 | #define NELLY_BUF_LEN 128 |
44 | #define NELLY_FILL_LEN 124 |
45 | #define NELLY_BIT_CAP 6 |
46 | #define NELLY_BASE_OFF 4228 |
47 | #define NELLY_BASE_SHIFT 19 |
48 | #define NELLY_SAMPLES (2 * NELLY_BUF_LEN) |
49 | |
50 | extern const float ff_nelly_dequantization_table[127]; |
51 | extern const uint8_t ff_nelly_band_sizes_table[NELLY_BANDS]; |
52 | extern const uint16_t ff_nelly_init_table[64]; |
53 | extern const int16_t ff_nelly_delta_table[32]; |
54 | |
55 | void ff_nelly_get_sample_bits(const float *buf, int *bits); |
56 | |
57 | #endif /* AVCODEC_NELLYMOSER_H */ |
58 |