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/*
* Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com)
* Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __PJMEDIA_CODECS_AMR_HELPER_H__
#define __PJMEDIA_CODECS_AMR_HELPER_H__
/**
* @file pjmedia-codec/amr_helper.h
* @brief Common tables and helper functions for AMR codec (NB & WB).
*/
#ifdef _MSC_VER
# pragma warning(disable:4214) // bit field types other than int
#endif
/**
* @defgroup PJMED_AMR_CODEC_HELPER AMR Codec Helper
* @ingroup PJMEDIA_CODEC_CODECS
* @brief AMR common tables and helper functions.
* @{
*
* This sections describes common AMR constants tables (e.g: bits sensitivity
* order map, frame lengths, bitrates) and helper functions (e.g: pack AMR
* payload in octet-aligned mode or bandwidth-efficient mode, payload parser,
* reorder AMR bitstream).
*/
PJ_BEGIN_DECL
/* AMR bits sensitivity order maps */
const pj_int16_t pjmedia_codec_amrnb_ordermap122[244] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 23, 15, 16, 17, 18,
19, 20, 21, 22, 24, 25, 26, 27, 28, 38,
141, 39, 142, 40, 143, 41, 144, 42, 145, 43,
146, 44, 147, 45, 148, 46, 149, 47, 97, 150,
200, 48, 98, 151, 201, 49, 99, 152, 202, 86,
136, 189, 239, 87, 137, 190, 240, 88, 138, 191,
241, 91, 194, 92, 195, 93, 196, 94, 197, 95,
198, 29, 30, 31, 32, 33, 34, 35, 50, 100,
153, 203, 89, 139, 192, 242, 51, 101, 154, 204,
55, 105, 158, 208, 90, 140, 193, 243, 59, 109,
162, 212, 63, 113, 166, 216, 67, 117, 170, 220,
36, 37, 54, 53, 52, 58, 57, 56, 62, 61,
60, 66, 65, 64, 70, 69, 68, 104, 103, 102,
108, 107, 106, 112, 111, 110, 116, 115, 114, 120,
119, 118, 157, 156, 155, 161, 160, 159, 165, 164,
163, 169, 168, 167, 173, 172, 171, 207, 206, 205,
211, 210, 209, 215, 214, 213, 219, 218, 217, 223,
222, 221, 73, 72, 71, 76, 75, 74, 79, 78,
77, 82, 81, 80, 85, 84, 83, 123, 122, 121,
126, 125, 124, 129, 128, 127, 132, 131, 130, 135,
134, 133, 176, 175, 174, 179, 178, 177, 182, 181,
180, 185, 184, 183, 188, 187, 186, 226, 225, 224,
229, 228, 227, 232, 231, 230, 235, 234, 233, 238,
237, 236, 96, 199
};
const pj_int16_t pjmedia_codec_amrnb_ordermap102[204] =
{
7, 6, 5, 4, 3, 2, 1, 0, 16, 15,
14, 13, 12, 11, 10, 9, 8, 26, 27, 28,
29, 30, 31, 115, 116, 117, 118, 119, 120, 72,
73, 161, 162, 65, 68, 69, 108, 111, 112, 154,
157, 158, 197, 200, 201, 32, 33, 121, 122, 74,
75, 163, 164, 66, 109, 155, 198, 19, 23, 21,
22, 18, 17, 20, 24, 25, 37, 36, 35, 34,
80, 79, 78, 77, 126, 125, 124, 123, 169, 168,
167, 166, 70, 67, 71, 113, 110, 114, 159, 156,
160, 202, 199, 203, 76, 165, 81, 82, 92, 91,
93, 83, 95, 85, 84, 94, 101, 102, 96, 104,
86, 103, 87, 97, 127, 128, 138, 137, 139, 129,
141, 131, 130, 140, 147, 148, 142, 150, 132, 149,
133, 143, 170, 171, 181, 180, 182, 172, 184, 174,
173, 183, 190, 191, 185, 193, 175, 192, 176, 186,
38, 39, 49, 48, 50, 40, 52, 42, 41, 51,
58, 59, 53, 61, 43, 60, 44, 54, 194, 179,
189, 196, 177, 195, 178, 187, 188, 151, 136, 146,
153, 134, 152, 135, 144, 145, 105, 90, 100, 107,
88, 106, 89, 98, 99, 62, 47, 57, 64, 45,
63, 46, 55, 56
};
const pj_int16_t pjmedia_codec_amrnb_ordermap795[159] =
{
8, 7, 6, 5, 4, 3, 2, 14, 16, 9,
10, 12, 13, 15, 11, 17, 20, 22, 24, 23,
19, 18, 21, 56, 88, 122, 154, 57, 89, 123,
155, 58, 90, 124, 156, 52, 84, 118, 150, 53,
85, 119, 151, 27, 93, 28, 94, 29, 95, 30,
96, 31, 97, 61, 127, 62, 128, 63, 129, 59,
91, 125, 157, 32, 98, 64, 130, 1, 0, 25,
26, 33, 99, 34, 100, 65, 131, 66, 132, 54,
86, 120, 152, 60, 92, 126, 158, 55, 87, 121,
153, 117, 116, 115, 46, 78, 112, 144, 43, 75,
109, 141, 40, 72, 106, 138, 36, 68, 102, 134,
114, 149, 148, 147, 146, 83, 82, 81, 80, 51,
50, 49, 48, 47, 45, 44, 42, 39, 35, 79,
77, 76, 74, 71, 67, 113, 111, 110, 108, 105,
101, 145, 143, 142, 140, 137, 133, 41, 73, 107,
139, 37, 69, 103, 135, 38, 70, 104, 136
};
const pj_int16_t pjmedia_codec_amrnb_ordermap74[148] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 16, 26, 87, 27,
88, 28, 89, 29, 90, 30, 91, 51, 80, 112,
141, 52, 81, 113, 142, 54, 83, 115, 144, 55,
84, 116, 145, 58, 119, 59, 120, 21, 22, 23,
17, 18, 19, 31, 60, 92, 121, 56, 85, 117,
146, 20, 24, 25, 50, 79, 111, 140, 57, 86,
118, 147, 49, 78, 110, 139, 48, 77, 53, 82,
114, 143, 109, 138, 47, 76, 108, 137, 32, 33,
61, 62, 93, 94, 122, 123, 41, 42, 43, 44,
45, 46, 70, 71, 72, 73, 74, 75, 102, 103,
104, 105, 106, 107, 131, 132, 133, 134, 135, 136,
34, 63, 95, 124, 35, 64, 96, 125, 36, 65,
97, 126, 37, 66, 98, 127, 38, 67, 99, 128,
39, 68, 100, 129, 40, 69, 101, 130
};
const pj_int16_t pjmedia_codec_amrnb_ordermap67[134] =
{
0, 1, 4, 3, 5, 6, 13, 7, 2, 8,
9, 11, 15, 12, 14, 10, 28, 82, 29, 83,
27, 81, 26, 80, 30, 84, 16, 55, 109, 56,
110, 31, 85, 57, 111, 48, 73, 102, 127, 32,
86, 51, 76, 105, 130, 52, 77, 106, 131, 58,
112, 33, 87, 19, 23, 53, 78, 107, 132, 21,
22, 18, 17, 20, 24, 25, 50, 75, 104, 129,
47, 72, 101, 126, 54, 79, 108, 133, 46, 71,
100, 125, 128, 103, 74, 49, 45, 70, 99, 124,
42, 67, 96, 121, 39, 64, 93, 118, 38, 63,
92, 117, 35, 60, 89, 114, 34, 59, 88, 113,
44, 69, 98, 123, 43, 68, 97, 122, 41, 66,
95, 120, 40, 65, 94, 119, 37, 62, 91, 116,
36, 61, 90, 115
};
const pj_int16_t pjmedia_codec_amrnb_ordermap59[118] =
{
0, 1, 4, 5, 3, 6, 7, 2, 13, 15,
8, 9, 11, 12, 14, 10, 16, 28, 74, 29,
75, 27, 73, 26, 72, 30, 76, 51, 97, 50,
71, 96, 117, 31, 77, 52, 98, 49, 70, 95,
116, 53, 99, 32, 78, 33, 79, 48, 69, 94,
115, 47, 68, 93, 114, 46, 67, 92, 113, 19,
21, 23, 22, 18, 17, 20, 24, 111, 43, 89,
110, 64, 65, 44, 90, 25, 45, 66, 91, 112,
54, 100, 40, 61, 86, 107, 39, 60, 85, 106,
36, 57, 82, 103, 35, 56, 81, 102, 34, 55,
80, 101, 42, 63, 88, 109, 41, 62, 87, 108,
38, 59, 84, 105, 37, 58, 83, 104
};
const pj_int16_t pjmedia_codec_amrnb_ordermap515[103] =
{
7, 6, 5, 4, 3, 2, 1, 0, 15, 14,
13, 12, 11, 10, 9, 8, 23, 24, 25, 26,
27, 46, 65, 84, 45, 44, 43, 64, 63, 62,
83, 82, 81, 102, 101, 100, 42, 61, 80, 99,
28, 47, 66, 85, 18, 41, 60, 79, 98, 29,
48, 67, 17, 20, 22, 40, 59, 78, 97, 21,
30, 49, 68, 86, 19, 16, 87, 39, 38, 58,
57, 77, 35, 54, 73, 92, 76, 96, 95, 36,
55, 74, 93, 32, 51, 33, 52, 70, 71, 89,
90, 31, 50, 69, 88, 37, 56, 75, 94, 34,
53, 72, 91
};
const pj_int16_t pjmedia_codec_amrnb_ordermap475[95] =
{
0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
10, 11, 12, 13, 14, 15, 23, 24, 25, 26,
27, 28, 48, 49, 61, 62, 82, 83, 47, 46,
45, 44, 81, 80, 79, 78, 17, 18, 20, 22,
77, 76, 75, 74, 29, 30, 43, 42, 41, 40,
38, 39, 16, 19, 21, 50, 51, 59, 60, 63,
64, 72, 73, 84, 85, 93, 94, 32, 33, 35,
36, 53, 54, 56, 57, 66, 67, 69, 70, 87,
88, 90, 91, 34, 55, 68, 89, 37, 58, 71,
92, 31, 52, 65, 86
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_660[] =
{
0, 5, 6, 7, 61, 84, 107, 130, 62, 85,
8, 4, 37, 38, 39, 40, 58, 81, 104, 127,
60, 83, 106, 129, 108, 131, 128, 41, 42, 80,
126, 1, 3, 57, 103, 82, 105, 59, 2, 63,
109, 110, 86, 19, 22, 23, 64, 87, 18, 20,
21, 17, 13, 88, 43, 89, 65, 111, 14, 24,
25, 26, 27, 28, 15, 16, 44, 90, 66, 112,
9, 11, 10, 12, 67, 113, 29, 30, 31, 32,
34, 33, 35, 36, 45, 51, 68, 74, 91, 97,
114, 120, 46, 69, 92, 115, 52, 75, 98, 121,
47, 70, 93, 116, 53, 76, 99, 122, 48, 71,
94, 117, 54, 77, 100, 123, 49, 72, 95, 118,
55, 78, 101, 124, 50, 73, 96, 119, 56, 79,
102, 125
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_885[] =
{
0, 4, 6, 7, 5, 3, 47, 48, 49, 112,
113, 114, 75, 106, 140, 171, 80, 111, 145, 176,
77, 108, 142, 173, 78, 109, 143, 174, 79, 110,
144, 175, 76, 107, 141, 172, 50, 115, 51, 2,
1, 81, 116, 146, 19, 21, 12, 17, 18, 20,
16, 25, 13, 10, 14, 24, 23, 22, 26, 8,
15, 52, 117, 31, 82, 147, 9, 33, 11, 83,
148, 53, 118, 28, 27, 84, 149, 34, 35, 29,
46, 32, 30, 54, 119, 37, 36, 39, 38, 40,
85, 150, 41, 42, 43, 44, 45, 55, 60, 65,
70, 86, 91, 96, 101, 120, 125, 130, 135, 151,
156, 161, 166, 56, 87, 121, 152, 61, 92, 126,
157, 66, 97, 131, 162, 71, 102, 136, 167, 57,
88, 122, 153, 62, 93, 127, 158, 67, 98, 132,
163, 72, 103, 137, 168, 58, 89, 123, 154, 63,
94, 128, 159, 68, 99, 133, 164, 73, 104, 138,
169, 59, 90, 124, 155, 64, 95, 129, 160, 69,
100, 134, 165, 74, 105, 139, 170
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_1265[] =
{
0, 4, 6, 93, 143, 196, 246, 7, 5, 3,
47, 48, 49, 50, 51, 150, 151, 152, 153, 154,
94, 144, 197, 247, 99, 149, 202, 252, 96, 146,
199, 249, 97, 147, 200, 250, 100, 203, 98, 148,
201, 251, 95, 145, 198, 248, 52, 2, 1, 101,
204, 155, 19, 21, 12, 17, 18, 20, 16, 25,
13, 10, 14, 24, 23, 22, 26, 8, 15, 53,
156, 31, 102, 205, 9, 33, 11, 103, 206, 54,
157, 28, 27, 104, 207, 34, 35, 29, 46, 32,
30, 55, 158, 37, 36, 39, 38, 40, 105, 208,
41, 42, 43, 44, 45, 56, 106, 159, 209, 57,
66, 75, 84, 107, 116, 125, 134, 160, 169, 178,
187, 210, 219, 228, 237, 58, 108, 161, 211, 62,
112, 165, 215, 67, 117, 170, 220, 71, 121, 174,
224, 76, 126, 179, 229, 80, 130, 183, 233, 85,
135, 188, 238, 89, 139, 192, 242, 59, 109, 162,
212, 63, 113, 166, 216, 68, 118, 171, 221, 72,
122, 175, 225, 77, 127, 180, 230, 81, 131, 184,
234, 86, 136, 189, 239, 90, 140, 193, 243, 60,
110, 163, 213, 64, 114, 167, 217, 69, 119, 172,
222, 73, 123, 176, 226, 78, 128, 181, 231, 82,
132, 185, 235, 87, 137, 190, 240, 91, 141, 194,
244, 61, 111, 164, 214, 65, 115, 168, 218, 70,
120, 173, 223, 74, 124, 177, 227, 79, 129, 182,
232, 83, 133, 186, 236, 88, 138, 191, 241, 92,
142, 195, 245
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_1425[] =
{
0, 4, 6, 101, 159, 220, 278, 7, 5, 3,
47, 48, 49, 50, 51, 166, 167, 168, 169, 170,
102, 160, 221, 279, 107, 165, 226, 284, 104, 162,
223, 281, 105, 163, 224, 282, 108, 227, 106, 164,
225, 283, 103, 161, 222, 280, 52, 2, 1, 109,
228, 171, 19, 21, 12, 17, 18, 20, 16, 25,
13, 10, 14, 24, 23, 22, 26, 8, 15, 53,
172, 31, 110, 229, 9, 33, 11, 111, 230, 54,
173, 28, 27, 112, 231, 34, 35, 29, 46, 32,
30, 55, 174, 37, 36, 39, 38, 40, 113, 232,
41, 42, 43, 44, 45, 56, 114, 175, 233, 62,
120, 181, 239, 75, 133, 194, 252, 57, 115, 176,
234, 63, 121, 182, 240, 70, 128, 189, 247, 76,
134, 195, 253, 83, 141, 202, 260, 92, 150, 211,
269, 84, 142, 203, 261, 93, 151, 212, 270, 85,
143, 204, 262, 94, 152, 213, 271, 86, 144, 205,
263, 95, 153, 214, 272, 64, 122, 183, 241, 77,
135, 196, 254, 65, 123, 184, 242, 78, 136, 197,
255, 87, 145, 206, 264, 96, 154, 215, 273, 58,
116, 177, 235, 66, 124, 185, 243, 71, 129, 190,
248, 79, 137, 198, 256, 88, 146, 207, 265, 97,
155, 216, 274, 59, 117, 178, 236, 67, 125, 186,
244, 72, 130, 191, 249, 80, 138, 199, 257, 89,
147, 208, 266, 98, 156, 217, 275, 60, 118, 179,
237, 68, 126, 187, 245, 73, 131, 192, 250, 81,
139, 200, 258, 90, 148, 209, 267, 99, 157, 218,
276, 61, 119, 180, 238, 69, 127, 188, 246, 74,
132, 193, 251, 82, 140, 201, 259, 91, 149, 210,
268, 100, 158, 219, 277
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_1585[] =
{
0, 4, 6, 109, 175, 244, 310, 7, 5, 3,
47, 48, 49, 50, 51, 182, 183, 184, 185, 186,
110, 176, 245, 311, 115, 181, 250, 316, 112, 178,
247, 313, 113, 179, 248, 314, 116, 251, 114, 180,
249, 315, 111, 177, 246, 312, 52, 2, 1, 117,
252, 187, 19, 21, 12, 17, 18, 20, 16, 25,
13, 10, 14, 24, 23, 22, 26, 8, 15, 53,
188, 31, 118, 253, 9, 33, 11, 119, 254, 54,
189, 28, 27, 120, 255, 34, 35, 29, 46, 32,
30, 55, 190, 37, 36, 39, 38, 40, 121, 256,
41, 42, 43, 44, 45, 56, 122, 191, 257, 63,
129, 198, 264, 76, 142, 211, 277, 89, 155, 224,
290, 102, 168, 237, 303, 57, 123, 192, 258, 70,
136, 205, 271, 83, 149, 218, 284, 96, 162, 231,
297, 62, 128, 197, 263, 75, 141, 210, 276, 88,
154, 223, 289, 101, 167, 236, 302, 58, 124, 193,
259, 71, 137, 206, 272, 84, 150, 219, 285, 97,
163, 232, 298, 59, 125, 194, 260, 64, 130, 199,
265, 67, 133, 202, 268, 72, 138, 207, 273, 77,
143, 212, 278, 80, 146, 215, 281, 85, 151, 220,
286, 90, 156, 225, 291, 93, 159, 228, 294, 98,
164, 233, 299, 103, 169, 238, 304, 106, 172, 241,
307, 60, 126, 195, 261, 65, 131, 200, 266, 68,
134, 203, 269, 73, 139, 208, 274, 78, 144, 213,
279, 81, 147, 216, 282, 86, 152, 221, 287, 91,
157, 226, 292, 94, 160, 229, 295, 99, 165, 234,
300, 104, 170, 239, 305, 107, 173, 242, 308, 61,
127, 196, 262, 66, 132, 201, 267, 69, 135, 204,
270, 74, 140, 209, 275, 79, 145, 214, 280, 82,
148, 217, 283, 87, 153, 222, 288, 92, 158, 227,
293, 95, 161, 230, 296, 100, 166, 235, 301, 105,
171, 240, 306, 108, 174, 243, 309
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_1825[] =
{
0, 4, 6, 121, 199, 280, 358, 7, 5, 3,
47, 48, 49, 50, 51, 206, 207, 208, 209, 210,
122, 200, 281, 359, 127, 205, 286, 364, 124, 202,
283, 361, 125, 203, 284, 362, 128, 287, 126, 204,
285, 363, 123, 201, 282, 360, 52, 2, 1, 129,
288, 211, 19, 21, 12, 17, 18, 20, 16, 25,
13, 10, 14, 24, 23, 22, 26, 8, 15, 53,
212, 31, 130, 289, 9, 33, 11, 131, 290, 54,
213, 28, 27, 132, 291, 34, 35, 29, 46, 32,
30, 55, 214, 37, 36, 39, 38, 40, 133, 292,
41, 42, 43, 44, 45, 56, 134, 215, 293, 198,
299, 136, 120, 138, 60, 279, 58, 62, 357, 139,
140, 295, 156, 57, 219, 297, 63, 217, 137, 170,
300, 222, 64, 106, 61, 78, 294, 92, 142, 141,
135, 221, 296, 301, 343, 59, 298, 184, 329, 315,
220, 216, 265, 251, 218, 237, 352, 223, 157, 86,
171, 87, 164, 351, 111, 302, 65, 178, 115, 323,
72, 192, 101, 179, 93, 73, 193, 151, 337, 309,
143, 274, 69, 324, 165, 150, 97, 338, 110, 310,
330, 273, 68, 107, 175, 245, 114, 79, 113, 189,
246, 259, 174, 71, 185, 96, 344, 100, 322, 83,
334, 316, 333, 252, 161, 348, 147, 82, 269, 232,
260, 308, 353, 347, 163, 231, 306, 320, 188, 270,
146, 177, 266, 350, 256, 85, 149, 116, 191, 160,
238, 258, 336, 305, 255, 88, 224, 99, 339, 230,
228, 227, 272, 242, 241, 319, 233, 311, 102, 74,
180, 275, 66, 194, 152, 325, 172, 247, 244, 261,
117, 158, 166, 354, 75, 144, 108, 312, 94, 186,
303, 80, 234, 89, 195, 112, 340, 181, 345, 317,
326, 276, 239, 167, 118, 313, 70, 355, 327, 253,
190, 176, 271, 104, 98, 153, 103, 90, 76, 267,
277, 248, 225, 262, 182, 84, 154, 235, 335, 168,
331, 196, 341, 249, 162, 307, 148, 349, 263, 321,
257, 243, 229, 356, 159, 119, 67, 187, 173, 145,
240, 77, 304, 332, 314, 342, 109, 254, 81, 278,
105, 91, 346, 318, 183, 250, 197, 328, 95, 155,
169, 268, 226, 236, 264
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_1985[] =
{
0, 4, 6, 129, 215, 304, 390, 7, 5, 3,
47, 48, 49, 50, 51, 222, 223, 224, 225, 226,
130, 216, 305, 391, 135, 221, 310, 396, 132, 218,
307, 393, 133, 219, 308, 394, 136, 311, 134, 220,
309, 395, 131, 217, 306, 392, 52, 2, 1, 137,
312, 227, 19, 21, 12, 17, 18, 20, 16, 25,
13, 10, 14, 24, 23, 22, 26, 8, 15, 53,
228, 31, 138, 313, 9, 33, 11, 139, 314, 54,
229, 28, 27, 140, 315, 34, 35, 29, 46, 32,
30, 55, 230, 37, 36, 39, 38, 40, 141, 316,
41, 42, 43, 44, 45, 56, 142, 231, 317, 63,
73, 92, 340, 82, 324, 149, 353, 159, 334, 165,
338, 178, 163, 254, 77, 168, 257, 153, 343, 57,
248, 238, 79, 252, 166, 67, 80, 201, 101, 267,
143, 164, 341, 255, 339, 187, 376, 318, 78, 328,
362, 115, 232, 242, 253, 290, 276, 62, 58, 158,
68, 93, 179, 319, 148, 169, 154, 72, 385, 329,
333, 344, 102, 83, 144, 233, 323, 124, 243, 192,
354, 237, 64, 247, 202, 209, 150, 116, 335, 268,
239, 299, 188, 196, 298, 94, 195, 258, 123, 363,
384, 109, 325, 371, 170, 370, 84, 110, 295, 180,
74, 210, 191, 106, 291, 205, 367, 381, 377, 206,
355, 122, 119, 120, 383, 160, 105, 108, 277, 380,
294, 284, 285, 345, 208, 269, 249, 366, 386, 300,
297, 259, 125, 369, 197, 97, 194, 286, 211, 281,
280, 183, 372, 87, 155, 283, 59, 348, 327, 184,
76, 111, 330, 203, 349, 69, 98, 152, 145, 189,
66, 320, 337, 173, 358, 251, 198, 174, 263, 262,
126, 241, 193, 88, 388, 117, 95, 387, 112, 359,
287, 244, 103, 272, 301, 171, 162, 234, 273, 127,
373, 181, 292, 85, 378, 302, 121, 107, 364, 346,
356, 212, 278, 213, 65, 382, 288, 207, 113, 175,
99, 296, 374, 368, 199, 260, 185, 336, 331, 161,
270, 264, 250, 240, 75, 350, 151, 60, 89, 321,
156, 274, 360, 326, 70, 282, 167, 146, 352, 81,
91, 389, 266, 245, 177, 235, 190, 256, 204, 342,
128, 118, 303, 104, 379, 182, 114, 375, 200, 96,
293, 172, 214, 365, 279, 86, 289, 351, 347, 357,
261, 186, 176, 271, 90, 100, 147, 322, 275, 361,
71, 332, 61, 265, 157, 246, 236
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_2305[] =
{
0, 4, 6, 145, 247, 352, 454, 7, 5, 3,
47, 48, 49, 50, 51, 254, 255, 256, 257, 258,
146, 248, 353, 455, 151, 253, 358, 460, 148, 250,
355, 457, 149, 251, 356, 458, 152, 359, 150, 252,
357, 459, 147, 249, 354, 456, 52, 2, 1, 153,
360, 259, 19, 21, 12, 17, 18, 20, 16, 25,
13, 10, 14, 24, 23, 22, 26, 8, 15, 53,
260, 31, 154, 361, 9, 33, 11, 155, 362, 54,
261, 28, 27, 156, 363, 34, 35, 29, 46, 32,
30, 55, 262, 37, 36, 39, 38, 40, 157, 364,
41, 42, 43, 44, 45, 56, 158, 263, 365, 181,
192, 170, 79, 57, 399, 90, 159, 297, 377, 366,
275, 68, 183, 388, 286, 194, 299, 92, 70, 182,
401, 172, 59, 91, 58, 400, 368, 161, 81, 160,
264, 171, 80, 389, 390, 378, 379, 193, 298, 69,
266, 265, 367, 277, 288, 276, 287, 184, 60, 195,
82, 93, 71, 369, 402, 173, 162, 444, 300, 391,
98, 76, 278, 61, 267, 374, 135, 411, 167, 102,
380, 200, 87, 178, 65, 94, 204, 124, 72, 342,
189, 305, 381, 396, 433, 301, 226, 407, 289, 237,
113, 215, 185, 128, 309, 403, 116, 320, 196, 331,
370, 422, 174, 64, 392, 83, 425, 219, 134, 188,
432, 112, 427, 139, 279, 163, 436, 208, 447, 218,
236, 229, 97, 294, 385, 230, 166, 268, 177, 443,
225, 426, 101, 272, 138, 127, 290, 117, 347, 199,
414, 95, 140, 240, 410, 395, 209, 129, 283, 346,
105, 241, 437, 86, 308, 448, 203, 345, 186, 107,
220, 415, 334, 319, 106, 313, 118, 123, 73, 207,
421, 214, 384, 373, 438, 62, 371, 341, 75, 449,
168, 323, 164, 242, 416, 324, 304, 197, 335, 404,
271, 63, 191, 325, 96, 169, 231, 280, 312, 187,
406, 84, 201, 100, 67, 382, 175, 336, 202, 330,
269, 393, 376, 383, 293, 307, 409, 179, 285, 314,
302, 372, 398, 190, 180, 89, 99, 103, 232, 78,
88, 77, 136, 387, 165, 198, 394, 125, 176, 428,
74, 375, 238, 227, 66, 273, 282, 141, 306, 412,
114, 85, 130, 348, 119, 291, 296, 386, 233, 397,
303, 405, 284, 445, 423, 221, 210, 205, 450, 108,
274, 434, 216, 343, 337, 142, 243, 321, 408, 451,
310, 292, 120, 109, 281, 439, 270, 429, 332, 295,
418, 211, 315, 222, 326, 131, 430, 244, 327, 349,
417, 316, 143, 338, 440, 234, 110, 212, 452, 245,
121, 419, 350, 223, 132, 441, 328, 413, 317, 339,
126, 104, 137, 446, 344, 239, 435, 115, 333, 206,
322, 217, 228, 424, 453, 311, 351, 111, 442, 224,
213, 122, 431, 340, 235, 246, 133, 144, 420, 329,
318
};
const pj_int16_t pjmedia_codec_amrwb_ordermap_2385[] =
{
0, 4, 6, 145, 251, 360, 466, 7, 5, 3,
47, 48, 49, 50, 51, 262, 263, 264, 265, 266,
146, 252, 361, 467, 151, 257, 366, 472, 148, 254,
363, 469, 149, 255, 364, 470, 156, 371, 150, 256,
365, 471, 147, 253, 362, 468, 52, 2, 1, 157,
372, 267, 19, 21, 12, 17, 18, 20, 16, 25,
13, 10, 14, 24, 23, 22, 26, 8, 15, 53,
268, 31, 152, 153, 154, 155, 258, 259, 260, 261,
367, 368, 369, 370, 473, 474, 475, 476, 158, 373,
9, 33, 11, 159, 374, 54, 269, 28, 27, 160,
375, 34, 35, 29, 46, 32, 30, 55, 270, 37,
36, 39, 38, 40, 161, 376, 41, 42, 43, 44,
45, 56, 162, 271, 377, 185, 196, 174, 79, 57,
411, 90, 163, 305, 389, 378, 283, 68, 187, 400,
294, 198, 307, 92, 70, 186, 413, 176, 59, 91,
58, 412, 380, 165, 81, 164, 272, 175, 80, 401,
402, 390, 391, 197, 306, 69, 274, 273, 379, 285,
296, 284, 295, 188, 60, 199, 82, 93, 71, 381,
414, 177, 166, 456, 308, 403, 98, 76, 286, 61,
275, 386, 135, 423, 171, 102, 392, 204, 87, 182,
65, 94, 208, 124, 72, 350, 193, 313, 393, 408,
445, 309, 230, 419, 297, 241, 113, 219, 189, 128,
317, 415, 116, 328, 200, 339, 382, 434, 178, 64,
404, 83, 437, 223, 134, 192, 444, 112, 439, 139,
287, 167, 448, 212, 459, 222, 240, 233, 97, 302,
397, 234, 170, 276, 181, 455, 229, 438, 101, 280,
138, 127, 298, 117, 355, 203, 426, 95, 140, 244,
422, 407, 213, 129, 291, 354, 105, 245, 449, 86,
316, 460, 207, 353, 190, 107, 224, 427, 342, 327,
106, 321, 118, 123, 73, 211, 433, 218, 396, 385,
450, 62, 383, 349, 75, 461, 172, 331, 168, 246,
428, 332, 312, 201, 343, 416, 279, 63, 195, 333,
96, 173, 235, 288, 320, 191, 418, 84, 205, 100,
67, 394, 179, 344, 206, 338, 277, 405, 388, 395,
301, 315, 421, 183, 293, 322, 310, 384, 410, 194,
184, 89, 99, 103, 236, 78, 88, 77, 136, 399,
169, 202, 406, 125, 180, 440, 74, 387, 242, 231,
66, 281, 290, 141, 314, 424, 114, 85, 130, 356,
119, 299, 304, 398, 237, 409, 311, 417, 292, 457,
435, 225, 214, 209, 462, 108, 282, 446, 220, 351,
345, 142, 247, 329, 420, 463, 318, 300, 120, 109,
289, 451, 278, 441, 340, 303, 430, 215, 323, 226,
334, 131, 442, 248, 335, 357, 429, 324, 143, 346,
452, 238, 110, 216, 464, 249, 121, 431, 358, 227,
132, 453, 336, 425, 325, 347, 126, 104, 137, 458,
352, 243, 447, 115, 341, 210, 330, 221, 232, 436,
465, 319, 359, 111, 454, 228, 217, 122, 443, 348,
239, 250, 133, 144, 432, 337, 326
};
/**
* AMR-NB bitstream sensitivity order maps.
*/
const pj_int16_t* const pjmedia_codec_amrnb_ordermaps[8] =
{
pjmedia_codec_amrnb_ordermap475,
pjmedia_codec_amrnb_ordermap515,
pjmedia_codec_amrnb_ordermap59,
pjmedia_codec_amrnb_ordermap67,
pjmedia_codec_amrnb_ordermap74,
pjmedia_codec_amrnb_ordermap795,
pjmedia_codec_amrnb_ordermap102,
pjmedia_codec_amrnb_ordermap122
};
/**
* AMR-WB bitstream sensitivity order maps.
*/
const pj_int16_t* const pjmedia_codec_amrwb_ordermaps[9] =
{
pjmedia_codec_amrwb_ordermap_660,
pjmedia_codec_amrwb_ordermap_885,
pjmedia_codec_amrwb_ordermap_1265,
pjmedia_codec_amrwb_ordermap_1425,
pjmedia_codec_amrwb_ordermap_1585,
pjmedia_codec_amrwb_ordermap_1825,
pjmedia_codec_amrwb_ordermap_1985,
pjmedia_codec_amrwb_ordermap_2305,
pjmedia_codec_amrwb_ordermap_2385
};
/**
* Constant of AMR-NB frame lengths in bytes.
*/
const pj_uint8_t pjmedia_codec_amrnb_framelen[16] =
{12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0};
/**
* Constant of AMR-NB frame lengths in bits.
*/
const pj_uint16_t pjmedia_codec_amrnb_framelenbits[9] =
{95, 103, 118, 134, 148, 159, 204, 244, 39};
/**
* Constant of AMR-NB bitrates.
*/
const pj_uint16_t pjmedia_codec_amrnb_bitrates[8] =
{4750, 5150, 5900, 6700, 7400, 7950, 10200, 12200};
/**
* Constant of AMR-WB frame lengths in bytes.
*/
const pj_uint8_t pjmedia_codec_amrwb_framelen[16] =
{17, 23, 32, 37, 40, 46, 50, 58, 60, 5, 0, 0, 0, 0, 0, 0};
/**
* Constant of AMR-WB frame lengths in bits.
*/
const pj_uint16_t pjmedia_codec_amrwb_framelenbits[10] =
{132, 177, 253, 285, 317, 365, 397, 461, 477, 40};
/**
* Constant of AMR-WB bitrates.
*/
const pj_uint16_t pjmedia_codec_amrwb_bitrates[9] =
{6600, 8850, 12650, 14250, 15850, 18250, 19850, 23050, 23850};
/**
* This structure describes AMR frame info, to be fitted into #pjmedia_frame
* bit info.
*/
#pragma pack(1)
typedef struct pjmedia_codec_amr_bit_info {
pj_uint8_t frame_type; /**< AMR frame type. */
pj_int8_t mode; /**< AMR mode. */
pj_uint8_t start_bit; /**< Frame start bit. */
pj_uint8_t good_quality:1; /**< Flag if frame is good/degraded. */
pj_uint8_t STI:1; /**< STI mode (first/update). */
} pjmedia_codec_amr_bit_info;
#pragma pack()
/**
* This structure describes AMR settings.
*/
typedef struct pjmedia_codec_amr_pack_setting {
pj_uint8_t amr_nb:1; /**< Set 1 for AMR-NB, 0 for AMR-WB. */
pj_uint8_t reorder:1; /**< Reorder bitstream into descending
sensitivity order or vice versa. */
pj_uint8_t octet_aligned:1; /**< TRUE if payload is in octet-aligned mode,
FALSE if payload is in bandwidth
efficient mode. */
pj_uint8_t cmr:4; /**< Change Mode Request for remote
encoder. */
} pjmedia_codec_amr_pack_setting;
/**
* Get AMR mode based on bitrate.
*
* @param bitrate AMR bitrate.
*
* @return AMR mode.
*/
PJ_INLINE(pj_int8_t) pjmedia_codec_amr_get_mode(unsigned bitrate)
{
pj_int8_t mode = -1;
if(bitrate==4750){
mode = 0;
} else if(bitrate==5150){
mode = 1;
} else if(bitrate==5900){
mode = 2;
} else if(bitrate==6700){
mode = 3;
} else if(bitrate==7400){
mode = 4;
} else if(bitrate==7950){
mode = 5;
} else if(bitrate==10200){
mode = 6;
} else if(bitrate==12200){
mode = 7;
/* AMRWB */
} else if(bitrate==6600){
mode = 0;
} else if(bitrate==8850){
mode = 1;
} else if(bitrate==12650){
mode = 2;
} else if(bitrate==14250){
mode = 3;
} else if(bitrate==15850){
mode = 4;
} else if(bitrate==18250){
mode = 5;
} else if(bitrate==19850){
mode = 6;
} else if(bitrate==23050){
mode = 7;
} else if(bitrate==23850){
mode = 8;
}
return mode;
}
/**
* Get AMR mode based on frame length.
*
* @param amrnb Set to PJ_TRUE for AMR-NB domain or PJ_FALSE for AMR-WB.
* @param frame_len The frame length.
*
* @return AMR mode.
*/
PJ_INLINE(pj_int8_t) pjmedia_codec_amr_get_mode2(pj_bool_t amrnb,
unsigned frame_len)
{
int i;
if (amrnb) {
for (i = 0; i < 9; ++i)
if (frame_len == pjmedia_codec_amrnb_framelen[i])
return (pj_int8_t)i;
} else {
for (i = 0; i < 10; ++i) {
if (frame_len == pjmedia_codec_amrwb_framelen[i])
return (pj_int8_t)i;
}
}
pj_assert(!"Invalid AMR frame length");
return -1;
}
/**
* Prepare a frame before pass it to decoder. This function will do:
* - reorder AMR bitstream from descending sensitivity order into
* encoder bits order. This can be enabled/disabled via param
* 'setting' by setting/resetting field 'reorder'.
* - align left the start bit (make the start_bit to be 0).
*
* @param in Input frame.
* @param setting Settings, see #pjmedia_codec_amr_pack_setting.
* @param out Output frame.
*
* @return PJ_SUCCESS on success.
*/
PJ_INLINE(pj_status_t) pjmedia_codec_amr_predecode(
const pjmedia_frame *in,
const pjmedia_codec_amr_pack_setting *setting,
pjmedia_frame *out)
{
pj_int8_t amr_bits[477 + 7] = {0};
pj_int8_t *p_amr_bits = &amr_bits[0];
pj_uint8_t *r = (pj_uint8_t*) in->buf; /* read cursor */
pj_uint8_t *w = (pj_uint8_t*) out->buf; /* write cursor */
/* env vars for AMR or AMRWB */
pj_uint8_t SID_FT;
const pj_uint8_t *framelen_tbl;
const pj_uint16_t *framelenbit_tbl;
const pj_uint16_t *bitrate_tbl;
const pj_int16_t* const *order_maps;
pjmedia_codec_amr_bit_info *in_info =
(pjmedia_codec_amr_bit_info*) &in->bit_info;
pjmedia_codec_amr_bit_info *out_info =
(pjmedia_codec_amr_bit_info*) &out->bit_info;
unsigned i;
*out_info = *in_info;
if (setting->amr_nb) {
SID_FT = 8;
framelen_tbl = pjmedia_codec_amrnb_framelen;
framelenbit_tbl = pjmedia_codec_amrnb_framelenbits;
bitrate_tbl = pjmedia_codec_amrnb_bitrates;
order_maps = pjmedia_codec_amrnb_ordermaps;
} else {
SID_FT = 9;
framelen_tbl = pjmedia_codec_amrwb_framelen;
framelenbit_tbl = pjmedia_codec_amrwb_framelenbits;
bitrate_tbl = pjmedia_codec_amrwb_bitrates;
order_maps = pjmedia_codec_amrwb_ordermaps;
}
PJ_UNUSED_ARG(bitrate_tbl);
/* unpack AMR bitstream if there is any data */
if (in_info->frame_type <= SID_FT) {
i = 0;
if (in_info->start_bit) {
for (; i < (unsigned)(8-in_info->start_bit); ++i)
*p_amr_bits++ = (pj_uint8_t)
((*r >> (7-in_info->start_bit-i)) & 1);
++r;
}
for(; i < framelenbit_tbl[in_info->frame_type]; i += 8, ++r) {
*p_amr_bits++ = (pj_uint8_t)((*r >> 7) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 6) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 5) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 4) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 3) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 2) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 1) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r ) & 1);
}
}
if (in_info->frame_type < SID_FT) {
/* Speech */
out_info->mode = in_info->frame_type;
out->size = framelen_tbl[out_info->mode];
pj_bzero(out->buf, out->size);
if (setting->reorder) {
const pj_int16_t *order_map;
order_map = order_maps[out_info->mode];
for(i = 0; i < framelenbit_tbl[out_info->mode]; ++i) {
if (amr_bits[i]) {
pj_uint16_t bitpos;
bitpos = order_map[i];
w[bitpos>>3] |= 1 << (7 - (bitpos % 8));
}
}
} else {
for(i = 0; i < framelenbit_tbl[out_info->mode]; ++i) {
if (amr_bits[i])
w[i >> 3] |= 1 << (7 - (i % 8));
}
}
} else if (in_info->frame_type == SID_FT) {
/* SID */
pj_uint8_t w_bitptr = 0;
pj_uint8_t FT_;
if (setting->amr_nb)
FT_ = (pj_uint8_t)((amr_bits[36] << 2) | (amr_bits[37] << 1) |
amr_bits[38]);
else
FT_ = (pj_uint8_t)((amr_bits[36] << 3) | (amr_bits[37] << 2) |
(amr_bits[38] << 1) | amr_bits[39]);
out_info->mode = FT_;
out->size = 5;
pj_bzero(out->buf, out->size);
for(i = 0; i < framelenbit_tbl[SID_FT]; ++i) {
if (amr_bits[i])
*w |= (1 << (7-w_bitptr));
if (++w_bitptr == 8) {
++w;
w_bitptr = 0;
}
}
} else {
/* NO DATA */
out->size = 0;
out_info->mode = -1;
}
out_info->start_bit = 0;
return PJ_SUCCESS;
}
/**
* Pack encoded AMR frame(s) into an RTP payload.
*
* @param frames AMR frames to be packed.
* @param nframes Number of frames to be packed.
* @param setting Settings, see #pjmedia_codec_amr_pack_setting.
* @param pkt Payload.
* @param pkt_size Payload size, as input this specifies payload maximum size,
* as output this specifies payload packed size.
*
* @return PJ_SUCCESS on success.
*/
PJ_INLINE (pj_status_t) pjmedia_codec_amr_pack(
const pjmedia_frame frames[],
unsigned nframes,
const pjmedia_codec_amr_pack_setting *setting,
void *pkt,
pj_size_t *pkt_size)
{
/* Write cursor */
pj_uint8_t *w = (pj_uint8_t*)pkt;
pj_uint8_t w_bitptr = 0;
/* Read cursor */
pj_uint8_t *r;
/* env vars for AMR or AMRWB */
pj_uint8_t SID_FT;
const pj_uint8_t *framelen_tbl;
const pj_uint16_t *framelenbit_tbl;
const pj_uint16_t *bitrate_tbl;
const pj_int16_t* const *order_maps;
/* frame info */
pjmedia_codec_amr_bit_info *info;
unsigned i, max_pkt_size;
max_pkt_size = (unsigned)*pkt_size;
if (setting->amr_nb) {
SID_FT = 8;
framelen_tbl = pjmedia_codec_amrnb_framelen;
framelenbit_tbl = pjmedia_codec_amrnb_framelenbits;
bitrate_tbl = pjmedia_codec_amrnb_bitrates;
order_maps = pjmedia_codec_amrnb_ordermaps;
} else {
SID_FT = 9;
framelen_tbl = pjmedia_codec_amrwb_framelen;
framelenbit_tbl = pjmedia_codec_amrwb_framelenbits;
bitrate_tbl = pjmedia_codec_amrwb_bitrates;
order_maps = pjmedia_codec_amrwb_ordermaps;
}
PJ_UNUSED_ARG(bitrate_tbl);
/* Code Mode Request, 4 bits */
*w = (pj_uint8_t)(setting->cmr << 4);
w_bitptr = 4;
if (setting->octet_aligned) {
++w;
w_bitptr = 0;
}
/* Table Of Contents, 6 bits each */
for (i = 0; i < nframes; ++i) {
pj_uint8_t TOC, FT, Q;
pj_bool_t F;
info = (pjmedia_codec_amr_bit_info*)&frames[i].bit_info;
F = (i != nframes-1);
FT = info->frame_type;
Q = (pj_uint8_t)(info->good_quality == 1);
pj_assert(FT <= SID_FT || FT == 14 || FT == 15);
/* Check buffer availability */
*pkt_size = w - (pj_uint8_t*)pkt + 1;
PJ_ASSERT_RETURN(*pkt_size <= max_pkt_size, PJ_ETOOSMALL);
TOC = (pj_uint8_t)((F<<5) | (FT<<1) | Q);
if (w_bitptr == 0) {
*w = (pj_uint8_t)(TOC<<2);
w_bitptr = 6;
} else if (w_bitptr == 2) {
*w++ |= TOC;
w_bitptr = 0;
} else if (w_bitptr == 4) {
*w++ |= TOC>>2;
*w = (pj_uint8_t)(TOC<<6);
w_bitptr = 2;
} else if (w_bitptr == 6) {
*w++ |= TOC>>4;
*w = (pj_uint8_t)(TOC<<4);
w_bitptr = 4;
}
if (setting->octet_aligned) {
++w;
w_bitptr = 0;
}
}
/* Encoded data */
for (i = 0; i < nframes; ++i) {
pj_int8_t amr_bits[477 + 7] = {0};
pj_int8_t *p_amr_bits = &amr_bits[0];
unsigned j;
info = (pjmedia_codec_amr_bit_info*)&frames[i].bit_info;
/* Check buffer availability */
*pkt_size = w - (pj_uint8_t*)pkt;
if (info->frame_type <= SID_FT)
*pkt_size += framelen_tbl[info->frame_type] + 1;
PJ_ASSERT_RETURN(*pkt_size <= max_pkt_size, PJ_ETOOSMALL);
/* Skip if there is no data */
if (info->frame_type > SID_FT)
continue;
/* Unpack bits */
r = (pj_uint8_t*) frames[i].buf;
j = 0;
if (info->start_bit) {
for (; j < (unsigned)(8-info->start_bit); ++j)
*p_amr_bits++ = (pj_uint8_t)
((*r >> (7-info->start_bit-j)) & 1);
++r;
}
for(; j < framelenbit_tbl[info->frame_type]; j+=8, ++r) {
*p_amr_bits++ = (pj_uint8_t)((*r >> 7) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 6) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 5) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 4) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 3) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 2) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r >> 1) & 1);
*p_amr_bits++ = (pj_uint8_t)((*r ) & 1);
}
if (info->frame_type < SID_FT) {
/* Speech */
if (w_bitptr == 0) *w = 0;
if (setting->reorder) {
const pj_int16_t *order_map;
/* Put bits in the packet, sensitivity descending ordered */
order_map = order_maps[info->frame_type];
for(j = 0; j < framelenbit_tbl[info->frame_type]; ++j) {
if (amr_bits[order_map[j]])
*w |= (1 << (7-w_bitptr));
if (++w_bitptr == 8) {
w_bitptr = 0;
++w;
*w = 0;
}
}
} else {
for(j = 0; j < framelenbit_tbl[info->frame_type]; ++j) {
if (amr_bits[j])
*w |= (1 << (7-w_bitptr));
if (++w_bitptr == 8) {
w_bitptr = 0;
++w;
*w = 0;
}
}
}
} else if (info->frame_type == SID_FT) {
/* SID */
amr_bits[35] |= info->STI;
if (setting->amr_nb) {
amr_bits[36] = (pj_uint8_t)((info->mode >> 2) & 1);
amr_bits[37] = (pj_uint8_t)((info->mode >> 1) & 1);
amr_bits[38] = (pj_uint8_t)((info->mode) & 1);
} else {
amr_bits[36] = (pj_uint8_t)((info->mode >> 3) & 1);
amr_bits[37] = (pj_uint8_t)((info->mode >> 2) & 1);
amr_bits[38] = (pj_uint8_t)((info->mode >> 1) & 1);
amr_bits[39] = (pj_uint8_t)((info->mode) & 1);
}
if (w_bitptr == 0) *w = 0;
for(j = 0; j < framelenbit_tbl[info->frame_type]; ++j) {
if (amr_bits[j])
*w |= (1 << (7-w_bitptr));
if (++w_bitptr == 8) {
w_bitptr = 0;
++w;
*w = 0;
}
}
}
if (setting->octet_aligned) {
++w;
w_bitptr = 0;
}
}
*pkt_size = w - (pj_uint8_t*)pkt;
if (w_bitptr)
*pkt_size += 1;
return PJ_SUCCESS;
}
/**
* Parse AMR payload into frames.
*
* @param pkt Payload.
* @param pkt_size Payload size.
* @param ts Base timestamp.
* @param setting Settings, see #pjmedia_codec_amr_pack_setting.
* @param frames Frames parsed.
* @param nframes Number of frames parsed.
* @param cmr Change Mode Request message for local encoder.
*
* @return PJ_SUCCESS on success.
*/
PJ_INLINE(pj_status_t) pjmedia_codec_amr_parse(
void *pkt,
pj_size_t pkt_size,
const pj_timestamp *ts,
const pjmedia_codec_amr_pack_setting* setting,
pjmedia_frame frames[],
unsigned *nframes,
pj_uint8_t *cmr)
{
unsigned cnt = 0;
pj_timestamp ts_ = *ts;
/* Read cursor */
pj_uint8_t r_bitptr = 0;
pj_uint8_t *r = (pj_uint8_t*)pkt;
/* env vars for AMR or AMRWB */
pj_uint8_t SID_FT;
const pj_uint8_t *framelen_tbl;
const pj_uint16_t *framelenbit_tbl;
const pj_int16_t* const *order_maps;
/* frame info */
pjmedia_codec_amr_bit_info *info;
if (setting->amr_nb) {
SID_FT = 8;
framelen_tbl = pjmedia_codec_amrnb_framelen;
framelenbit_tbl = pjmedia_codec_amrnb_framelenbits;
order_maps = pjmedia_codec_amrnb_ordermaps;
} else {
SID_FT = 9;
framelen_tbl = pjmedia_codec_amrwb_framelen;
framelenbit_tbl = pjmedia_codec_amrwb_framelenbits;
order_maps = pjmedia_codec_amrwb_ordermaps;
}
PJ_UNUSED_ARG(pkt_size);
PJ_UNUSED_ARG(order_maps);
/* Code Mode Request, 4 bits */
*cmr = (pj_uint8_t)((*r >> 4) & 0x0F);
r_bitptr = 4;
if (setting->octet_aligned) {
++r;
r_bitptr = 0;
}
/* Table Of Contents, 6 bits each */
for (;;) {
pj_uint8_t TOC = 0;
pj_uint8_t F, FT, Q;
if (r_bitptr == 0) {
TOC = (pj_uint8_t)(*r >> 2);
r_bitptr = 6;
} else if (r_bitptr == 2) {
TOC = (pj_uint8_t)(*r++ & 0x3F);
r_bitptr = 0;
} else if (r_bitptr == 4) {
TOC = (pj_uint8_t)((*r++ & 0x0f) << 2);
TOC |= *r >> 6;
r_bitptr = 2;
} else if (r_bitptr == 6) {
TOC = (pj_uint8_t)((*r++ & 0x03) << 4);
TOC |= *r >> 4;
r_bitptr = 4;
}
F = (pj_uint8_t)(TOC >> 5);
FT = (pj_uint8_t)((TOC >> 1) & 0x0F);
Q = (pj_uint8_t)(TOC & 1);
if (FT > SID_FT && FT < 14) {
/* Discard the whole packet (RFC4867 4.3.2) */
//pj_assert(!"Invalid AMR frametype, stream may be corrupted!");
cnt = 0;
PJ_LOG(4, ("AMR parser", "Invalid AMR frametype, stream may be "
"corrupted!"));
break;
}
if (setting->octet_aligned) {
++r;
r_bitptr = 0;
}
/* Set frame attributes */
info = (pjmedia_codec_amr_bit_info*) &frames[cnt].bit_info;
info->frame_type = FT;
info->mode = (pj_int8_t)((FT < SID_FT)? FT : -1);
info->good_quality = (pj_uint8_t)(Q == 1);
info->start_bit = 0;
info->STI = 0;
frames[cnt].timestamp = ts_;
frames[cnt].type = PJMEDIA_FRAME_TYPE_AUDIO;
/* AMR frame length is 20ms */
ts_.u64 += setting->amr_nb? 160 : 320;
if (++cnt == *nframes || !F)
break;
}
*nframes = cnt;
cnt = 0;
/* Speech frames */
while (cnt < *nframes) {
pj_uint8_t FT;
info = (pjmedia_codec_amr_bit_info*) &frames[cnt].bit_info;
FT = info->frame_type;
frames[cnt].buf = r;
info->start_bit = r_bitptr;
if (FT == SID_FT) {
unsigned sti_bitptr;
sti_bitptr = r_bitptr + 35;
info->STI = (pj_uint8_t)
(r[sti_bitptr >> 3] >> (7 - (sti_bitptr % 8))) & 1;
}
if (setting->octet_aligned) {
r += framelen_tbl[FT];
frames[cnt].size = framelen_tbl[FT];
} else {
if (FT == 14 || FT == 15) {
/* NO DATA */
frames[cnt].size = 0;
} else {
unsigned adv_bit;
adv_bit = framelenbit_tbl[FT] + r_bitptr;
r += adv_bit >> 3;
r_bitptr = (pj_uint8_t)(adv_bit % 8);
frames[cnt].size = adv_bit >> 3;
if (r_bitptr)
++frames[cnt].size;
}
}
++cnt;
}
return PJ_SUCCESS;
}
PJ_END_DECL
/**
* @}
*/
#endif /* __PJMEDIA_CODECS_AMR_HELPER_H__ */
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