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@ -46,7 +46,7 @@ typedef struct {
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uint8_t output;
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} tcod_lut_t;
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static tcod_lut_t tcod_lut[188][8][256];
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static tcod_lut_t tcod_lut[8][256];
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static uint16_t tcod_per_fw[188][6144];
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static srslte_bit_interleaver_t tcod_interleavers[188];
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@ -219,7 +219,7 @@ int srslte_tcod_encode_lut(srslte_tcod_t *h, srslte_crc_t *crc, uint8_t *input,
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srslte_crc_checksum_put_byte(crc, in);
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/* Run actual encoder */
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tcod_lut_t l = tcod_lut[cblen_idx][state0][in];
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tcod_lut_t l = tcod_lut[state0][in];
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parity[i] = l.output;
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state0 = l.next_state;
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}
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@ -231,7 +231,7 @@ int srslte_tcod_encode_lut(srslte_tcod_t *h, srslte_crc_t *crc, uint8_t *input,
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uint8_t in = (uint8_t) ((checksum >> mask_shift) & 0xff);
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input[idx] = in;
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tcod_lut_t l = tcod_lut[cblen_idx][state0][in];
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tcod_lut_t l = tcod_lut[state0][in];
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parity[idx] = l.output;
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state0 = l.next_state;
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}
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@ -239,7 +239,7 @@ int srslte_tcod_encode_lut(srslte_tcod_t *h, srslte_crc_t *crc, uint8_t *input,
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} else {
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/* No CRC given */
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for (uint32_t i = 0; i < long_cb / 8; i++) {
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tcod_lut_t l = tcod_lut[cblen_idx][state0][input[i]];
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tcod_lut_t l = tcod_lut[state0][input[i]];
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parity[i] = l.output;
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state0 = l.next_state;
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}
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@ -253,7 +253,7 @@ int srslte_tcod_encode_lut(srslte_tcod_t *h, srslte_crc_t *crc, uint8_t *input,
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/* Parity bits for the 2nd constituent encoders */
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uint8_t state1 = 0;
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for (uint32_t i=0;i<long_cb/8;i++) {
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tcod_lut_t l = tcod_lut[cblen_idx][state1][h->temp[i]];
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tcod_lut_t l = tcod_lut[state1][h->temp[i]];
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uint8_t out = l.output;
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parity[long_cb/8+i] |= (out&0xf0)>>4;
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parity[long_cb/8+i+1] = (out&0xf)<<4;
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@ -344,13 +344,14 @@ void srslte_tcod_gentable() {
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return;
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}
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// Save fw/bw permutation tables
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for (uint32_t i=0;i<long_cb;i++) {
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for (uint32_t i = 0; i < long_cb; i++) {
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tcod_per_fw[len][i] = interl.forward[i];
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}
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srslte_bit_interleaver_init(&tcod_interleavers[len], tcod_per_fw[len], long_cb);
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for (uint32_t i=long_cb;i<6144;i++) {
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for (uint32_t i = long_cb; i < 6144; i++) {
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tcod_per_fw[len][i] = 0;
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}
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}
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// Compute state transitions
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for (uint32_t state=0;state<8;state++) {
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for (uint32_t data=0;data<256;data++) {
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@ -360,7 +361,7 @@ void srslte_tcod_gentable() {
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reg_1 = (state&2)>>1;
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reg_2 = state&1;
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tcod_lut[len][state][data].output = 0;
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tcod_lut[state][data].output = 0;
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uint8_t bit, in, out;
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for (uint32_t i = 0; i < 8; i++) {
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bit = (data&(1<<(7-i)))?1:0;
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@ -372,11 +373,10 @@ void srslte_tcod_gentable() {
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reg_1 = reg_0;
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reg_0 = in;
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tcod_lut[len][state][data].output |= out<<(7-i);
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tcod_lut[state][data].output |= out<<(7-i);
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}
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tcod_lut[len][state][data].next_state = (uint8_t) ((reg_0 << 2 | reg_1 << 1 | reg_2) % 8);
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}
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tcod_lut[state][data].next_state = (uint8_t) ((reg_0 << 2 | reg_1 << 1 | reg_2) % 8);
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}
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}
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