/* $Id$ */ /* * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) * Copyright (C) 2003-2008 Benny Prijono * * 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 = *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__ */