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* add prefixes for functions & defines in bitmap.[ch]

master
Alex 'AdUser' Z 7 years ago
parent
0cf1db360b
commit
461aaeaaca
6 changed files with 57 additions and 50 deletions
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  1. 36
      src/bitmap.c
  2. 22
      src/bitmap.h
  3. 3
      src/database.c
  4. 4
      src/sample.c
  5. 20
      src/simdb-query.c
  6. 22
      tests/bitmap.c

36
src/bitmap.c
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@ -39,14 +39,14 @@ unsigned char dict[256] = {
};
int
bitmap_compare(const unsigned char *a,
const unsigned char *b)
simdb_bitmap_compare(const unsigned char *a,
const unsigned char *b)
{
unsigned char diff = 0;
size_t i = 0;
size_t cnt = 0;
for (i = 0; i < BITMAP_SIZE; i++, a++, b++) {
for (i = 0; i < SIMDB_BITMAP_SIZE; i++, a++, b++) {
diff = *a ^ *b;
cnt += dict[diff];
}
@ -55,13 +55,13 @@ bitmap_compare(const unsigned char *a,
}
size_t
bitmap_diffmap(unsigned char *diff,
const unsigned char *a,
const unsigned char *b)
simdb_bitmap_diffmap(unsigned char *diff,
const unsigned char *a,
const unsigned char *b)
{
size_t i = 0;
for (i = 0; i < BITMAP_SIZE; i++, a++, b++, diff++) {
for (i = 0; i < SIMDB_BITMAP_SIZE; i++, a++, b++, diff++) {
*diff = *a ^ *b;
}
@ -69,9 +69,9 @@ bitmap_diffmap(unsigned char *diff,
}
size_t
bitmap_unpack(const unsigned char *map,
unsigned char ** const buf) {
size_t buf_size = BITMAP_BITS;
simdb_bitmap_unpack(const unsigned char *map,
unsigned char ** const buf) {
size_t buf_size = SIMDB_BITMAP_BITS;
uint16_t *p, row, mask;
unsigned char *q = NULL;
@ -79,9 +79,9 @@ bitmap_unpack(const unsigned char *map,
p = (uint16_t *) map;
q = *buf;
for (size_t i = 0; i < BITMAP_SIDE; i++, p++) {
for (size_t i = 0; i < SIMDB_BITMAP_SIDE; i++, p++) {
row = *p; mask = 0x1;
for (size_t j = 0; j < BITMAP_SIDE; j++, q++) {
for (size_t j = 0; j < SIMDB_BITMAP_SIDE; j++, q++) {
*q = (row & mask) ? 0xFF : 0x00;
mask <<= 1;
}
@ -91,16 +91,16 @@ bitmap_unpack(const unsigned char *map,
}
void
bitmap_print(const unsigned char *map) {
simdb_bitmap_print(const unsigned char *map) {
unsigned char *buf = NULL, *p = NULL;
char line[BITMAP_SIDE * 2 + 1];
char line[SIMDB_BITMAP_SIDE * 2 + 1];
bitmap_unpack(map, &buf);
simdb_bitmap_unpack(map, &buf);
p = buf;
line[BITMAP_SIDE * 2] = '\0';
for (size_t i = 0; i < BITMAP_SIDE; i++) {
for (size_t j = 0; j < BITMAP_SIDE; j++, p++) {
line[SIMDB_BITMAP_SIDE * 2] = '\0';
for (size_t i = 0; i < SIMDB_BITMAP_SIDE; i++) {
for (size_t j = 0; j < SIMDB_BITMAP_SIDE; j++, p++) {
line[(j * 2) + 0] = (*p == 0x00) ? CHAR_NONE : CHAR_USED;
line[(j * 2) + 1] = (*p == 0x00) ? CHAR_NONE : CHAR_USED;
}

22
src/bitmap.h
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@ -7,11 +7,11 @@
*/
/** Bits per bitmap side (currently - 16) */
#define BITMAP_SIDE 16
#define SIMDB_BITMAP_SIDE 16
/** Bitmap size in bytes (currently - 32) */
#define BITMAP_SIZE (BITMAP_SIDE * (BITMAP_SIDE / 8))
#define SIMDB_BITMAP_SIZE (SIMDB_BITMAP_SIDE * (SIMDB_BITMAP_SIDE / 8))
/** Total bits in bitmap (currently - 256) */
#define BITMAP_BITS (BITMAP_SIZE * 8)
#define SIMDB_BITMAP_BITS (SIMDB_BITMAP_SIZE * 8)
/** placeholders for various bit states */
#define CHAR_USED '@' /**< bit is 1 */
@ -24,8 +24,8 @@
* @returns Integer showing difference between bitmaps in bits (0-256)
*/
int
bitmap_compare(const unsigned char *a,
const unsigned char *b);
simdb_bitmap_compare(const unsigned char *a,
const unsigned char *b);
/**
* @brief Make difference map of to bitmaps
@ -35,9 +35,9 @@ bitmap_compare(const unsigned char *a,
* @returns Size of generated map (now is @a BITMAP_SIZE)
*/
size_t
bitmap_diffmap(unsigned char *diff,
const unsigned char *a,
const unsigned char *b);
simdb_bitmap_diffmap(unsigned char *diff,
const unsigned char *a,
const unsigned char *b);
/**
@ -47,8 +47,8 @@ bitmap_diffmap(unsigned char *diff,
* @returns Size of generated bytemap (now is @a BITMAP_BITS)
*/
size_t
bitmap_unpack(const unsigned char *map,
unsigned char ** const buf);
simdb_bitmap_unpack(const unsigned char *map,
unsigned char ** const buf);
/**
* @brief Print bitmap to stdout as ascii-square
@ -57,5 +57,5 @@ bitmap_unpack(const unsigned char *map,
* but width is BITMAP_SIDE x 2, for ease of reading
*/
void
bitmap_print(const unsigned char *map);
simdb_bitmap_print(const unsigned char *map);
#endif

3
src/database.c
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@ -299,8 +299,7 @@ simdb_search(simdb_t * const db,
}
/* - compare bitmap - more expensive */
match.diff_bitmap = (float) bitmap_compare(p + REC_OFF_BM, sample->data + REC_OFF_BM);
match.diff_bitmap /= BITMAP_BITS;
match.diff_bitmap = simdb_bitmap_compare(p + REC_OFF_BM, sample->data + REC_OFF_BM) / SIMDB_BITMAP_BITS;
if (match.diff_bitmap > search->maxdiff_bitmap)
continue;

4
src/sample.c
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@ -82,12 +82,12 @@ simdb_sample(simdb_rec_t * const rec,
#endif
if (status == MagickPass) {
assert(buf_size == BITMAP_SIZE);
assert(buf_size == SIMDB_BITMAP_SIZE);
memset(rec->data, 0x0, SIMDB_REC_LEN);
rec->data[REC_OFF_RU] = 0xFF;
memcpy(&rec->data[REC_OFF_IW], &w, sizeof(uint16_t));
memcpy(&rec->data[REC_OFF_IH], &h, sizeof(uint16_t));
memcpy(&rec->data[REC_OFF_BM], buf, BITMAP_SIZE);
memcpy(&rec->data[REC_OFF_BM], buf, SIMDB_BITMAP_SIZE);
} else {
description = MagickGetException(wand, &severity);
fprintf(stderr, "%03d %.1024s\n", severity, description);

20
src/simdb-query.c
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@ -131,7 +131,7 @@ int rec_bitmap(simdb_t *db, uint64_t number)
return 1;
}
bitmap_print(&rec.data[REC_OFF_BM]);
simdb_bitmap_print(&rec.data[REC_OFF_BM]);
return 0;
}
@ -140,9 +140,9 @@ int rec_diff(simdb_t *db, uint64_t a, uint64_t b, unsigned short int showmap)
{
simdb_rec_t rec;
float diff = 0.0;
unsigned char one[BITMAP_SIZE];
unsigned char two[BITMAP_SIZE];
unsigned char map[BITMAP_SIZE];
unsigned char one[SIMDB_BITMAP_SIZE];
unsigned char two[SIMDB_BITMAP_SIZE];
unsigned char map[SIMDB_BITMAP_SIZE];
assert(db != NULL);
memset(&rec, 0x0, sizeof(simdb_rec_t));
@ -152,23 +152,23 @@ int rec_diff(simdb_t *db, uint64_t a, uint64_t b, unsigned short int showmap)
fprintf(stderr, "record diff: first sample not exists\n");
return 1;
}
memcpy(one, &rec.data[REC_OFF_BM], BITMAP_SIZE);
memcpy(one, &rec.data[REC_OFF_BM], SIMDB_BITMAP_SIZE);
rec.num = b;
if (simdb_record_read(db, &rec) < 1) {
fprintf(stderr, "record diff: second sample not exists\n");
return 1;
}
memcpy(two, &rec.data[REC_OFF_BM], BITMAP_SIZE);
memcpy(two, &rec.data[REC_OFF_BM], SIMDB_BITMAP_SIZE);
if (showmap) {
bitmap_diffmap(map, one, two);
bitmap_print(map);
simdb_bitmap_diffmap(map, one, two);
simdb_bitmap_print(map);
return 0;
}
diff = (float) bitmap_compare(one, two);
printf("%.2f%%\n", (diff / BITMAP_BITS) * 100);
diff = (float) simdb_bitmap_compare(one, two);
printf("%.2f%%\n", (diff / SIMDB_BITMAP_BITS) * 100);
return 0;
}

22
tests/bitmap.c
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@ -3,31 +3,39 @@
int
main() {
unsigned char a[BITMAP_SIZE], b[BITMAP_SIZE];
unsigned char a[SIMDB_BITMAP_SIZE];
unsigned char b[SIMDB_BITMAP_SIZE];
int ret;
memset (a, 0x00, sizeof(a));
memset (b, 0x00, sizeof(b));
assert(bitmap_compare(a, b) == 0);
ret = simdb_bitmap_compare(a, b);
assert(ret == 0);
memset (a, 0xFE, sizeof(a));
memset (b, 0xFF, sizeof(b));
assert(bitmap_compare(a, b) == 32);
ret = simdb_bitmap_compare(a, b);
assert(ret == 32);
memset (a, 0x00, sizeof(a));
memset (b, 0x55, sizeof(b));
assert(bitmap_compare(a, b) == 128);
ret = simdb_bitmap_compare(a, b);
assert(ret == 128);
memset (a, 0x00, sizeof(a));
memset (b, 0xAA, sizeof(b));
assert(bitmap_compare(a, b) == 128);
ret = simdb_bitmap_compare(a, b);
assert(ret == 128);
memset (a, 0xAA, sizeof(a));
memset (b, 0x55, sizeof(b));
assert(bitmap_compare(a, b) == 256);
ret = simdb_bitmap_compare(a, b);
assert(ret == 256);
memset (a, 0x00, sizeof(a));
memset (b, 0xFF, sizeof(b));
assert(bitmap_compare(a, b) == 256);
ret = simdb_bitmap_compare(a, b);
assert(ret == 256);
return 0;
}

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