+static char *g_library, *g_rg;
+static int g_sol2sanger_tbl[128];
+
+static void sol2sanger(bam1_t *b)
+{
+ int l;
+ uint8_t *qual = bam1_qual(b);
+ if (g_sol2sanger_tbl[30] == 0) {
+ for (l = 0; l != 128; ++l) {
+ g_sol2sanger_tbl[l] = (int)(10.0 * log(1.0 + pow(10.0, (l - 64 + 33) / 10.0)) / log(10.0) + .499);
+ if (g_sol2sanger_tbl[l] >= 93) g_sol2sanger_tbl[l] = 93;
+ }
+ }
+ for (l = 0; l < b->core.l_qseq; ++l) {
+ int q = qual[l];
+ if (q > 127) q = 127;
+ qual[l] = g_sol2sanger_tbl[q];
+ }
+}
+
+static inline int __g_skip_aln(const bam_header_t *h, const bam1_t *b)
+{
+ if (b->core.qual < g_min_mapQ || ((b->core.flag & g_flag_on) != g_flag_on) || (b->core.flag & g_flag_off))
+ return 1;
+ if (g_rg) {
+ uint8_t *s = bam_aux_get(b, "RG");
+ if (s && strcmp(g_rg, (char*)(s + 1)) == 0) return 0;
+ }
+ if (g_library) {
+ const char *p = bam_get_library((bam_header_t*)h, b);
+ return (p && strcmp(p, g_library) == 0)? 0 : 1;
+ }
+ return 0;
+}