X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=bam2bcf.c;h=5ad81c05641935ffd4c7f2b6082acc9d341214b2;hb=cbe42056eafe54cb371f61f6360bef670b51a3da;hp=e64e3357c04d5cd61bc7ecdc3e6af6d0fd859182;hpb=95882d9fdab78fb90469798141d9308a65415fda;p=samtools.git diff --git a/bam2bcf.c b/bam2bcf.c index e64e335..5ad81c0 100644 --- a/bam2bcf.c +++ b/bam2bcf.c @@ -5,6 +5,8 @@ #include "bam2bcf.h" #include "bcftools/bcf.h" +#define MAX_END_DIST 30 + extern void ks_introsort_uint32_t(size_t n, uint32_t a[]); #define CALL_ETA 0.03f @@ -71,11 +73,12 @@ typedef struct { */ int bcf_call_glfgen(int _n, const bam_pileup1_t *pl, int ref_base /*4-bit*/, bcf_callaux_t *bca, bcf_callret1_t *r) { - int i, j, k, c, n; + int i, j, k, c, n, ref4; float *p = r->p; auxaux_t aux; memset(r, 0, sizeof(bcf_callret1_t)); + ref4 = bam_nt16_nt4_table[ref_base]; if (_n == 0) return -1; // enlarge the aux array if necessary @@ -88,6 +91,7 @@ int bcf_call_glfgen(int _n, const bam_pileup1_t *pl, int ref_base /*4-bit*/, bcf for (i = n = 0; i < _n; ++i) { const bam_pileup1_t *p = pl + i; uint32_t q, x = 0, qq; + int min_dist; if (p->is_del || (p->b->core.flag&BAM_FUNMAP)) continue; // skip unmapped reads and deleted bases q = (uint32_t)bam1_qual(p->b)[p->qpos]; // base quality if (q < bca->min_baseQ) continue; @@ -97,8 +101,17 @@ int bcf_call_glfgen(int _n, const bam_pileup1_t *pl, int ref_base /*4-bit*/, bcf qq = bam1_seqi(bam1_seq(p->b), p->qpos); // base q = bam_nt16_nt4_table[qq? qq : ref_base]; // q is the 2-bit base if (q < 4) x |= 1 << 21 | q << 16; - + k = (ref4 < 4 && q == ref4)? 0 : 1; + k = k<<1 | bam1_strand(p->b); + ++r->d[k]; bca->info[n++] = x; + // calculate min_dist + min_dist = p->b->core.l_qseq - 1 - p->qpos; + if (min_dist > p->qpos) min_dist = p->qpos; + if (min_dist > MAX_END_DIST) min_dist = MAX_END_DIST; + k >>= 1; + r->dsum[k] += min_dist; + r->d2sum[k] += min_dist * min_dist; } ks_introsort_uint32_t(n, bca->info); r->depth = n; @@ -204,10 +217,26 @@ int bcf_call_combine(int n, const bcf_callret1_t *calls, int ref_base /*4-bit*/, } call->shift = (int)(sum_min + .499); } + memset(call->d, 0, 4 * sizeof(int)); + call->davg[0] = call->davg[1] = call->dstd[0] = call->dstd[1] = 0.; for (i = call->depth = 0, tmp = 0; i < n; ++i) { call->depth += calls[i].depth; + for (j = 0; j < 4; ++j) call->d[j] += calls[i].d[j]; + for (j = 0; j < 2; ++j) { + call->davg[j] += calls[i].dsum[j]; + call->dstd[j] += calls[i].d2sum[j]; + } tmp += calls[i].sum_Q2; } + for (j = 0; j < 2; ++j) { + int x = call->d[j*2] + call->d[j*2+1]; + if (x == 0) { + call->davg[j] = call->dstd[j] = 0.; + } else { + call->davg[j] /= x; + call->dstd[j] = sqrt(call->dstd[j] / x - call->davg[j] * call->davg[j]); + } + } call->rmsQ = (int)(sqrt((double)tmp / call->depth) + .499); return 0; } @@ -228,7 +257,17 @@ int bcf_call2bcf(int tid, int pos, bcf_call_t *bc, bcf1_t *b) } kputc('\0', &s); kputc('\0', &s); - kputs("MQ=", &s); kputw(bc->rmsQ, &s); kputs(";DP=", &s); kputw(bc->depth, &s); kputc('\0', &s); + // INFO + kputs("MQ=", &s); kputw(bc->rmsQ, &s); // kputs(";DP=", &s); kputw(bc->depth, &s); + kputs(";DP4=", &s); + for (i = 0; i < 4; ++i) { + if (i) kputc(',', &s); + kputw(bc->d[i], &s); + } + if (bc->d[2] + bc->d[3] > 1) + ksprintf(&s, ";MED=%.1lf,%.1lf,%.1lf,%.1lf", bc->davg[0], bc->dstd[0], bc->davg[1], bc->dstd[1]); + kputc('\0', &s); + // FMT kputs("PL", &s); kputc('\0', &s); b->m_str = s.m; b->str = s.s; b->l_str = s.l; bcf_sync(bc->n, b);