FreeCalypso > hg > freecalypso-tools
view miscutil/gsm0610.c @ 619:f82551c77e58
libserial-newlnx: ASYNC_LOW_LATENCY patch reverted
Reports from Das Signal indicate that loadtools performance on Debian
is about the same as on Slackware, and that including or omitting the
ASYNC_LOW_LATENCY patch from Serg makes no difference. Because the
patch in question does not appear to be necessary, it is being reverted
until and unless someone other than Serg reports an actual real-world
system on which loadtools operation times are slowed compared to the
Mother's Slackware reference and on which Slackware-like performance
can be restored by setting the ASYNC_LOW_LATENCY flag.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Thu, 27 Feb 2020 01:09:48 +0000 |
parents | 08804864172a |
children |
line wrap: on
line source
/* * This code (lifted from OsmocomBB) facilitates the conversion of 33-byte * GSM 06.10 encoded speech frames between the bit order at the 06.10 interface * in the de facto standard libgsm implementation and the bit order at the * 05.03 channel encoder interface, as realized in TI's Calypso DSP. */ #include <sys/types.h> #include <string.h> #include <strings.h> /* GSM FR - subjective importance bit ordering */ /* This array encodes GSM 05.03 Table 2. * It's also GSM 06.10 Table A.2.1a * * It converts between serial parameter output by the encoder and the * order needed before channel encoding. */ const u_short gsm0610_bitorder[260] = { 0, /* LARc0:5 */ 47, /* Xmaxc0:5 */ 103, /* Xmaxc1:5 */ 159, /* Xmaxc2:5 */ 215, /* Xmaxc3:5 */ 1, /* LARc0:4 */ 6, /* LARc1:5 */ 12, /* LARc2:4 */ 2, /* LARc0:3 */ 7, /* LARc1:4 */ 13, /* LARc2:3 */ 17, /* LARc3:4 */ 36, /* Nc0:6 */ 92, /* Nc1:6 */ 148, /* Nc2:6 */ 204, /* Nc3:6 */ 48, /* Xmaxc0:4 */ 104, /* Xmaxc1:4 */ 160, /* Xmaxc2:4 */ 216, /* Xmaxc3:4 */ 8, /* LARc1:3 */ 22, /* LARc4:3 */ 26, /* LARc5:3 */ 37, /* Nc0:5 */ 93, /* Nc1:5 */ 149, /* Nc2:5 */ 205, /* Nc3:5 */ 38, /* Nc0:4 */ 94, /* Nc1:4 */ 150, /* Nc2:4 */ 206, /* Nc3:4 */ 39, /* Nc0:3 */ 95, /* Nc1:3 */ 151, /* Nc2:3 */ 207, /* Nc3:3 */ 40, /* Nc0:2 */ 96, /* Nc1:2 */ 152, /* Nc2:2 */ 208, /* Nc3:2 */ 49, /* Xmaxc0:3 */ 105, /* Xmaxc1:3 */ 161, /* Xmaxc2:3 */ 217, /* Xmaxc3:3 */ 3, /* LARc0:2 */ 18, /* LARc3:3 */ 30, /* LARc6:2 */ 41, /* Nc0:1 */ 97, /* Nc1:1 */ 153, /* Nc2:1 */ 209, /* Nc3:1 */ 23, /* LARc4:2 */ 27, /* LARc5:2 */ 43, /* bc0:1 */ 99, /* bc1:1 */ 155, /* bc2:1 */ 211, /* bc3:1 */ 42, /* Nc0:0 */ 98, /* Nc1:0 */ 154, /* Nc2:0 */ 210, /* Nc3:0 */ 45, /* Mc0:1 */ 101, /* Mc1:1 */ 157, /* Mc2:1 */ 213, /* Mc3:1 */ 4, /* LARc0:1 */ 9, /* LARc1:2 */ 14, /* LARc2:2 */ 33, /* LARc7:2 */ 19, /* LARc3:2 */ 24, /* LARc4:1 */ 31, /* LARc6:1 */ 44, /* bc0:0 */ 100, /* bc1:0 */ 156, /* bc2:0 */ 212, /* bc3:0 */ 50, /* Xmaxc0:2 */ 106, /* Xmaxc1:2 */ 162, /* Xmaxc2:2 */ 218, /* Xmaxc3:2 */ 53, /* xmc0_0:2 */ 56, /* xmc0_1:2 */ 59, /* xmc0_2:2 */ 62, /* xmc0_3:2 */ 65, /* xmc0_4:2 */ 68, /* xmc0_5:2 */ 71, /* xmc0_6:2 */ 74, /* xmc0_7:2 */ 77, /* xmc0_8:2 */ 80, /* xmc0_9:2 */ 83, /* xmc0_10:2 */ 86, /* xmc0_11:2 */ 89, /* xmc0_12:2 */ 109, /* xmc1_0:2 */ 112, /* xmc1_1:2 */ 115, /* xmc1_2:2 */ 118, /* xmc1_3:2 */ 121, /* xmc1_4:2 */ 124, /* xmc1_5:2 */ 127, /* xmc1_6:2 */ 130, /* xmc1_7:2 */ 133, /* xmc1_8:2 */ 136, /* xmc1_9:2 */ 139, /* xmc1_10:2 */ 142, /* xmc1_11:2 */ 145, /* xmc1_12:2 */ 165, /* xmc2_0:2 */ 168, /* xmc2_1:2 */ 171, /* xmc2_2:2 */ 174, /* xmc2_3:2 */ 177, /* xmc2_4:2 */ 180, /* xmc2_5:2 */ 183, /* xmc2_6:2 */ 186, /* xmc2_7:2 */ 189, /* xmc2_8:2 */ 192, /* xmc2_9:2 */ 195, /* xmc2_10:2 */ 198, /* xmc2_11:2 */ 201, /* xmc2_12:2 */ 221, /* xmc3_0:2 */ 224, /* xmc3_1:2 */ 227, /* xmc3_2:2 */ 230, /* xmc3_3:2 */ 233, /* xmc3_4:2 */ 236, /* xmc3_5:2 */ 239, /* xmc3_6:2 */ 242, /* xmc3_7:2 */ 245, /* xmc3_8:2 */ 248, /* xmc3_9:2 */ 251, /* xmc3_10:2 */ 254, /* xmc3_11:2 */ 257, /* xmc3_12:2 */ 46, /* Mc0:0 */ 102, /* Mc1:0 */ 158, /* Mc2:0 */ 214, /* Mc3:0 */ 51, /* Xmaxc0:1 */ 107, /* Xmaxc1:1 */ 163, /* Xmaxc2:1 */ 219, /* Xmaxc3:1 */ 54, /* xmc0_0:1 */ 57, /* xmc0_1:1 */ 60, /* xmc0_2:1 */ 63, /* xmc0_3:1 */ 66, /* xmc0_4:1 */ 69, /* xmc0_5:1 */ 72, /* xmc0_6:1 */ 75, /* xmc0_7:1 */ 78, /* xmc0_8:1 */ 81, /* xmc0_9:1 */ 84, /* xmc0_10:1 */ 87, /* xmc0_11:1 */ 90, /* xmc0_12:1 */ 110, /* xmc1_0:1 */ 113, /* xmc1_1:1 */ 116, /* xmc1_2:1 */ 119, /* xmc1_3:1 */ 122, /* xmc1_4:1 */ 125, /* xmc1_5:1 */ 128, /* xmc1_6:1 */ 131, /* xmc1_7:1 */ 134, /* xmc1_8:1 */ 137, /* xmc1_9:1 */ 140, /* xmc1_10:1 */ 143, /* xmc1_11:1 */ 146, /* xmc1_12:1 */ 166, /* xmc2_0:1 */ 169, /* xmc2_1:1 */ 172, /* xmc2_2:1 */ 175, /* xmc2_3:1 */ 178, /* xmc2_4:1 */ 181, /* xmc2_5:1 */ 184, /* xmc2_6:1 */ 187, /* xmc2_7:1 */ 190, /* xmc2_8:1 */ 193, /* xmc2_9:1 */ 196, /* xmc2_10:1 */ 199, /* xmc2_11:1 */ 202, /* xmc2_12:1 */ 222, /* xmc3_0:1 */ 225, /* xmc3_1:1 */ 228, /* xmc3_2:1 */ 231, /* xmc3_3:1 */ 234, /* xmc3_4:1 */ 237, /* xmc3_5:1 */ 240, /* xmc3_6:1 */ 243, /* xmc3_7:1 */ 246, /* xmc3_8:1 */ 249, /* xmc3_9:1 */ 252, /* xmc3_10:1 */ 255, /* xmc3_11:1 */ 258, /* xmc3_12:1 */ 5, /* LARc0:0 */ 10, /* LARc1:1 */ 15, /* LARc2:1 */ 28, /* LARc5:1 */ 32, /* LARc6:0 */ 34, /* LARc7:1 */ 35, /* LARc7:0 */ 16, /* LARc2:0 */ 20, /* LARc3:1 */ 21, /* LARc3:0 */ 25, /* LARc4:0 */ 52, /* Xmaxc0:0 */ 108, /* Xmaxc1:0 */ 164, /* Xmaxc2:0 */ 220, /* Xmaxc3:0 */ 55, /* xmc0_0:0 */ 58, /* xmc0_1:0 */ 61, /* xmc0_2:0 */ 64, /* xmc0_3:0 */ 67, /* xmc0_4:0 */ 70, /* xmc0_5:0 */ 73, /* xmc0_6:0 */ 76, /* xmc0_7:0 */ 79, /* xmc0_8:0 */ 82, /* xmc0_9:0 */ 85, /* xmc0_10:0 */ 88, /* xmc0_11:0 */ 91, /* xmc0_12:0 */ 111, /* xmc1_0:0 */ 114, /* xmc1_1:0 */ 117, /* xmc1_2:0 */ 120, /* xmc1_3:0 */ 123, /* xmc1_4:0 */ 126, /* xmc1_5:0 */ 129, /* xmc1_6:0 */ 132, /* xmc1_7:0 */ 135, /* xmc1_8:0 */ 138, /* xmc1_9:0 */ 141, /* xmc1_10:0 */ 144, /* xmc1_11:0 */ 147, /* xmc1_12:0 */ 167, /* xmc2_0:0 */ 170, /* xmc2_1:0 */ 173, /* xmc2_2:0 */ 176, /* xmc2_3:0 */ 179, /* xmc2_4:0 */ 182, /* xmc2_5:0 */ 185, /* xmc2_6:0 */ 188, /* xmc2_7:0 */ 191, /* xmc2_8:0 */ 194, /* xmc2_9:0 */ 197, /* xmc2_10:0 */ 200, /* xmc2_11:0 */ 203, /* xmc2_12:0 */ 223, /* xmc3_0:0 */ 226, /* xmc3_1:0 */ 229, /* xmc3_2:0 */ 232, /* xmc3_3:0 */ 235, /* xmc3_4:0 */ 238, /* xmc3_5:0 */ 241, /* xmc3_6:0 */ 244, /* xmc3_7:0 */ 247, /* xmc3_8:0 */ 250, /* xmc3_9:0 */ 253, /* xmc3_10:0 */ 256, /* xmc3_11:0 */ 259, /* xmc3_12:0 */ 11, /* LARc1:0 */ 29, /* LARc5:0 */ }; static int msb_get_bit(buf, bn) u_char *buf; { int pos_byte = bn >> 3; int pos_bit = 7 - (bn & 7); return (buf[pos_byte] >> pos_bit) & 1; } static void msb_set_bit(buf, bn, bit) u_char *buf; { int pos_byte = bn >> 3; int pos_bit = 7 - (bn & 7); buf[pos_byte] |= (bit << pos_bit); } void gsm0610_tidsp_to_libgsm(inbytes, outbytes) u_char *inbytes, *outbytes; { int i, di, si; bzero(outbytes, 33); outbytes[0] = 0xD0; for (i = 0; i < 260; i++) { di = gsm0610_bitorder[i]; si = (i > 181) ? i + 4 : i; msb_set_bit(outbytes, 4 + di, msb_get_bit(inbytes, si)); } } void gsm0610_libgsm_to_tidsp(inbytes, outbytes) u_char *inbytes, *outbytes; { int i, di, si; bzero(outbytes, 33); for (i = 0; i < 260; i++) { si = gsm0610_bitorder[i]; di = (i > 181) ? i + 4 : i; msb_set_bit(outbytes, di, msb_get_bit(inbytes, 4 + si)); } }