// FIXME: we'd better use no global variables...
static rghash_t g_rghash = 0;
-static int g_min_mapQ = 0, g_flag_on = 0, g_flag_off = 0;
+static int g_min_mapQ = 0, g_flag_on = 0, g_flag_off = 0, g_qual_scale = 0;
static float g_subsam = -1;
static char *g_library, *g_rg;
static void *g_bed;
void bed_destroy(void *_h);
int bed_overlap(const void *_h, const char *chr, int beg, int end);
-static inline int __g_skip_aln(const bam_header_t *h, const bam1_t *b)
+static int process_aln(const bam_header_t *h, bam1_t *b)
{
+ if (g_qual_scale > 1) {
+ int i;
+ uint8_t *qual = bam1_qual(b);
+ for (i = 0; i < b->core.l_qseq; ++i) {
+ int c = qual[i] * g_qual_scale;
+ qual[i] = c < 93? c : 93;
+ }
+ }
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_bed && b->core.tid >= 0 && !bed_overlap(g_bed, h->target_name[b->core.tid], b->core.pos, bam_calend(&b->core, bam1_cigar(b))))
// callback function for bam_fetch() that prints nonskipped records
static int view_func(const bam1_t *b, void *data)
{
- if (!__g_skip_aln(((samfile_t*)data)->header, b))
+ if (!process_aln(((samfile_t*)data)->header, (bam1_t*)b))
samwrite((samfile_t*)data, b);
return 0;
}
// callback function for bam_fetch() that counts nonskipped records
static int count_func(const bam1_t *b, void *data)
{
- if (!__g_skip_aln(((count_func_data_t*)data)->header, b)) {
+ if (!process_aln(((count_func_data_t*)data)->header, (bam1_t*)b)) {
(*((count_func_data_t*)data)->count)++;
}
return 0;
/* parse command-line options */
strcpy(in_mode, "r"); strcpy(out_mode, "w");
- while ((c = getopt(argc, argv, "Sbct:h1Ho:q:f:F:ul:r:xX?T:R:L:s:")) >= 0) {
+ while ((c = getopt(argc, argv, "SbBct:h1Ho:q:f:F:ul:r:xX?T:R:L:s:Q:")) >= 0) {
switch (c) {
case 's': g_subsam = atof(optarg); break;
case 'c': is_count = 1; break;
case 'X': of_type = BAM_OFSTR; break;
case '?': is_long_help = 1; break;
case 'T': fn_ref = strdup(optarg); is_bamin = 0; break;
+ case 'B': bam_no_B = 1; break;
+ case 'Q': g_qual_scale = atoi(optarg); break;
default: return usage(is_long_help);
}
}
bam1_t *b = bam_init1();
int r;
while ((r = samread(in, b)) >= 0) { // read one alignment from `in'
- if (!__g_skip_aln(in->header, b)) {
+ if (!process_aln(in->header, b)) {
if (!is_count) samwrite(out, b); // write the alignment to `out'
count++;
}
fprintf(stderr, " -x output FLAG in HEX (samtools-C specific)\n");
fprintf(stderr, " -X output FLAG in string (samtools-C specific)\n");
fprintf(stderr, " -c print only the count of matching records\n");
+ fprintf(stderr, " -B collapse the backward CIGAR operation\n");
fprintf(stderr, " -L FILE output alignments overlapping the input BED FILE [null]\n");
fprintf(stderr, " -t FILE list of reference names and lengths (force -S) [null]\n");
fprintf(stderr, " -T FILE reference sequence file (force -S) [null]\n");