+++ /dev/null
-#include <stdlib.h>
-#include <stdio.h>
-#include <assert.h>
-#include "bam.h"
-#include "ksort.h"
-
-#define TV_GAP 2
-
-typedef struct __freenode_t {
- uint32_t level:28, cnt:4;
- struct __freenode_t *next;
-} freenode_t, *freenode_p;
-
-#define freenode_lt(a,b) ((a)->cnt < (b)->cnt || ((a)->cnt == (b)->cnt && (a)->level < (b)->level))
-KSORT_INIT(node, freenode_p, freenode_lt)
-
-/* Memory pool, similar to the one in bam_pileup.c */
-typedef struct {
- int cnt, n, max;
- freenode_t **buf;
-} mempool_t;
-
-static mempool_t *mp_init()
-{
- return (mempool_t*)calloc(1, sizeof(mempool_t));
-}
-static void mp_destroy(mempool_t *mp)
-{
- int k;
- for (k = 0; k < mp->n; ++k) free(mp->buf[k]);
- free(mp->buf); free(mp);
-}
-static inline freenode_t *mp_alloc(mempool_t *mp)
-{
- ++mp->cnt;
- if (mp->n == 0) return (freenode_t*)calloc(1, sizeof(freenode_t));
- else return mp->buf[--mp->n];
-}
-static inline void mp_free(mempool_t *mp, freenode_t *p)
-{
- --mp->cnt; p->next = 0; p->cnt = TV_GAP;
- if (mp->n == mp->max) {
- mp->max = mp->max? mp->max<<1 : 256;
- mp->buf = (freenode_t**)realloc(mp->buf, sizeof(freenode_t*) * mp->max);
- }
- mp->buf[mp->n++] = p;
-}
-
-/* core part */
-struct __bam_lplbuf_t {
- int max, n_cur, n_pre;
- int max_level, *cur_level, *pre_level;
- mempool_t *mp;
- freenode_t **aux, *head, *tail;
- int n_nodes, m_aux;
- bam_pileup_f func;
- void *user_data;
- bam_plbuf_t *plbuf;
-};
-
-void bam_lplbuf_reset(bam_lplbuf_t *buf)
-{
- freenode_t *p, *q;
- bam_plbuf_reset(buf->plbuf);
- for (p = buf->head; p->next;) {
- q = p->next;
- mp_free(buf->mp, p);
- p = q;
- }
- buf->head = buf->tail;
- buf->max_level = 0;
- buf->n_cur = buf->n_pre = 0;
- buf->n_nodes = 0;
-}
-
-static int tview_func(uint32_t tid, uint32_t pos, int n, const bam_pileup1_t *pl, void *data)
-{
- bam_lplbuf_t *tv = (bam_lplbuf_t*)data;
- freenode_t *p;
- int i, l, max_level;
- // allocate memory if necessary
- if (tv->max < n) { // enlarge
- tv->max = n;
- kroundup32(tv->max);
- tv->cur_level = (int*)realloc(tv->cur_level, sizeof(int) * tv->max);
- tv->pre_level = (int*)realloc(tv->pre_level, sizeof(int) * tv->max);
- }
- tv->n_cur = n;
- // update cnt
- for (p = tv->head; p->next; p = p->next)
- if (p->cnt > 0) --p->cnt;
- // calculate cur_level[]
- max_level = 0;
- for (i = l = 0; i < n; ++i) {
- const bam_pileup1_t *p = pl + i;
- if (p->is_head) {
- if (tv->head->next && tv->head->cnt == 0) { // then take a free slot
- freenode_t *p = tv->head->next;
- tv->cur_level[i] = tv->head->level;
- mp_free(tv->mp, tv->head);
- tv->head = p;
- --tv->n_nodes;
- } else tv->cur_level[i] = ++tv->max_level;
- } else {
- tv->cur_level[i] = tv->pre_level[l++];
- if (p->is_tail) { // then return a free slot
- tv->tail->level = tv->cur_level[i];
- tv->tail->next = mp_alloc(tv->mp);
- tv->tail = tv->tail->next;
- ++tv->n_nodes;
- }
- }
- if (tv->cur_level[i] > max_level) max_level = tv->cur_level[i];
- ((bam_pileup1_t*)p)->level = tv->cur_level[i];
- }
- assert(l == tv->n_pre);
- tv->func(tid, pos, n, pl, tv->user_data);
- // sort the linked list
- if (tv->n_nodes) {
- freenode_t *q;
- if (tv->n_nodes + 1 > tv->m_aux) { // enlarge
- tv->m_aux = tv->n_nodes + 1;
- kroundup32(tv->m_aux);
- tv->aux = (freenode_t**)realloc(tv->aux, sizeof(void*) * tv->m_aux);
- }
- for (p = tv->head, i = l = 0; p->next;) {
- if (p->level > max_level) { // then discard this entry
- q = p->next;
- mp_free(tv->mp, p);
- p = q;
- } else {
- tv->aux[i++] = p;
- p = p->next;
- }
- }
- tv->aux[i] = tv->tail; // add a proper tail for the loop below
- tv->n_nodes = i;
- if (tv->n_nodes) {
- ks_introsort(node, tv->n_nodes, tv->aux);
- for (i = 0; i < tv->n_nodes; ++i) tv->aux[i]->next = tv->aux[i+1];
- tv->head = tv->aux[0];
- } else tv->head = tv->tail;
- }
- // clean up
- tv->max_level = max_level;
- memcpy(tv->pre_level, tv->cur_level, tv->n_cur * 4);
- // squeeze out terminated levels
- for (i = l = 0; i < n; ++i) {
- const bam_pileup1_t *p = pl + i;
- if (!p->is_tail)
- tv->pre_level[l++] = tv->pre_level[i];
- }
- tv->n_pre = l;
-/*
- fprintf(stderr, "%d\t", pos+1);
- for (i = 0; i < n; ++i) {
- const bam_pileup1_t *p = pl + i;
- if (p->is_head) fprintf(stderr, "^");
- if (p->is_tail) fprintf(stderr, "$");
- fprintf(stderr, "%d,", p->level);
- }
- fprintf(stderr, "\n");
-*/
- return 0;
-}
-
-bam_lplbuf_t *bam_lplbuf_init(bam_pileup_f func, void *data)
-{
- bam_lplbuf_t *tv;
- tv = (bam_lplbuf_t*)calloc(1, sizeof(bam_lplbuf_t));
- tv->mp = mp_init();
- tv->head = tv->tail = mp_alloc(tv->mp);
- tv->func = func;
- tv->user_data = data;
- tv->plbuf = bam_plbuf_init(tview_func, tv);
- return (bam_lplbuf_t*)tv;
-}
-
-void bam_lplbuf_destroy(bam_lplbuf_t *tv)
-{
- freenode_t *p, *q;
- free(tv->cur_level); free(tv->pre_level);
- bam_plbuf_destroy(tv->plbuf);
- free(tv->aux);
- for (p = tv->head; p->next;) {
- q = p->next;
- mp_free(tv->mp, p); p = q;
- }
- mp_free(tv->mp, p);
- assert(tv->mp->cnt == 0);
- mp_destroy(tv->mp);
- free(tv);
-}
-
-int bam_lplbuf_push(const bam1_t *b, bam_lplbuf_t *tv)
-{
- return bam_plbuf_push(b, tv->plbuf);
-}
projects / pysam.git / blobdiff