diff options
| -rw-r--r-- | src/rlc.cpp | 29 | ||||
| -rw-r--r-- | src/rlc.h | 2 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/rlc.cpp b/src/rlc.cpp index ca12e919..79d8f48a 100644 --- a/src/rlc.cpp +++ b/src/rlc.cpp @@ -356,3 +356,32 @@ unsigned int gprs_rlc_mcs_cps(GprsCodingScheme cs, int punct, int punct2, return -1; } + +void gprs_rlc_mcs_cps_decode(unsigned int cps, + GprsCodingScheme cs, int *punct, int *punct2, int *with_padding) +{ + *punct2 = -1; + *with_padding = 0; + + switch (GprsCodingScheme::Scheme(cs)) { + case GprsCodingScheme::MCS1: + cps -= 0b1011; *punct = cps % 2; break; + case GprsCodingScheme::MCS2: + cps -= 0b1001; *punct = cps % 2; break; + case GprsCodingScheme::MCS3: + cps -= 0b0011; *punct = cps % 3; *with_padding = cps >= 3; break; + case GprsCodingScheme::MCS4: + cps -= 0b0000; *punct = cps % 3; break; + case GprsCodingScheme::MCS5: + cps -= 0b100; *punct = cps % 2; break; + case GprsCodingScheme::MCS6: + cps -= 0b000; *punct = cps % 2; *with_padding = cps >= 2; break; + case GprsCodingScheme::MCS7: + cps -= 0b10100; *punct = cps / 3; *punct2 = cps % 3; break; + case GprsCodingScheme::MCS8: + cps -= 0b01011; *punct = cps / 3; *punct2 = cps % 3; break; + case GprsCodingScheme::MCS9: + cps -= 0b00000; *punct = cps / 4; *punct2 = cps % 3; break; + default: ; + } +} @@ -109,6 +109,8 @@ void gprs_rlc_data_block_info_init(struct gprs_rlc_data_block_info *rdbi, GprsCodingScheme cs, bool with_padding); unsigned int gprs_rlc_mcs_cps(GprsCodingScheme cs, int punct, int punct2, int with_padding); +void gprs_rlc_mcs_cps_decode(unsigned int cps, GprsCodingScheme cs, + int *punct, int *punct2, int *with_padding); /* * I hold the currently transferred blocks and will provide |