/*!
* boxaaReadStream()
*
* Input: stream
* Return: boxaa, or null on error
*/
BOXAA *
boxaaReadStream(FILE *fp)
{
l_int32 n, i, x, y, w, h, version;
l_int32 ignore;
BOXA *boxa;
BOXAA *baa;
PROCNAME("boxaaReadStream");
if (!fp)
return (BOXAA *)ERROR_PTR("stream not defined", procName, NULL);
if (fscanf(fp, "\nBoxaa Version %d\n", &version) != 1)
return (BOXAA *)ERROR_PTR("not a boxaa file", procName, NULL);
if (version != BOXAA_VERSION_NUMBER)
return (BOXAA *)ERROR_PTR("invalid boxa version", procName, NULL);
if (fscanf(fp, "Number of boxa = %d\n", &n) != 1)
return (BOXAA *)ERROR_PTR("not a boxaa file", procName, NULL);
if ((baa = boxaaCreate(n)) == NULL)
return (BOXAA *)ERROR_PTR("boxaa not made", procName, NULL);
for (i = 0; i < n; i++) {
if (fscanf(fp, "\nBoxa[%d] extent: x = %d, y = %d, w = %d, h = %d",
&ignore, &x, &y, &w, &h) != 5)
return (BOXAA *)ERROR_PTR("boxa descr not valid", procName, NULL);
if ((boxa = boxaReadStream(fp)) == NULL)
return (BOXAA *)ERROR_PTR("boxa not made", procName, NULL);
boxaaAddBoxa(baa, boxa, L_INSERT);
}
return baa;
}
/*!
* pixaReadStream()
*
* Input: stream
* Return: pixa, or null on error
*/
PIXA *
pixaReadStream(FILE *fp)
{
l_int32 n, i, xres, yres, version;
l_int32 ignore;
BOXA *boxa;
PIX *pix;
PIXA *pixa;
PROCNAME("pixaReadStream");
#if !HAVE_LIBPNG /* defined in environ.h */
return (PIXA *)ERROR_PTR("no libpng: can't read data", procName, NULL);
#else
if (!fp)
return (PIXA *)ERROR_PTR("stream not defined", procName, NULL);
if (fscanf(fp, "\nPixa Version %d\n", &version) != 1)
return (PIXA *)ERROR_PTR("not a pixa file", procName, NULL);
if (version != PIXA_VERSION_NUMBER)
return (PIXA *)ERROR_PTR("invalid pixa version", procName, NULL);
if (fscanf(fp, "Number of pix = %d\n", &n) != 1)
return (PIXA *)ERROR_PTR("not a pixa file", procName, NULL);
if ((pixa = pixaCreate(n)) == NULL)
return (PIXA *)ERROR_PTR("pixa not made", procName, NULL);
if ((boxa = boxaReadStream(fp)) == NULL)
return (PIXA *)ERROR_PTR("boxa not made", procName, NULL);
boxaDestroy(&pixa->boxa);
pixa->boxa = boxa;
for (i = 0; i < n; i++) {
if ((fscanf(fp, " pix[%d]: xres = %d, yres = %d\n",
&ignore, &xres, &yres)) != 3)
return (PIXA *)ERROR_PTR("res reading", procName, NULL);
if ((pix = pixReadStreamPng(fp)) == NULL)
return (PIXA *)ERROR_PTR("pix not read", procName, NULL);
pixSetXRes(pix, xres);
pixSetYRes(pix, yres);
pixaAddPix(pixa, pix, L_INSERT);
}
return pixa;
#endif /* !HAVE_LIBPNG */
}
/*!
* boxaRead()
*
* Input: filename
* Return: boxa, or null on error
*/
BOXA *
boxaRead(const char *filename)
{
FILE *fp;
BOXA *boxa;
PROCNAME("boxaRead");
if (!filename)
return (BOXA *)ERROR_PTR("filename not defined", procName, NULL);
if ((fp = fopenReadStream(filename)) == NULL)
return (BOXA *)ERROR_PTR("stream not opened", procName, NULL);
if ((boxa = boxaReadStream(fp)) == NULL) {
fclose(fp);
return (BOXA *)ERROR_PTR("boxa not read", procName, NULL);
}
fclose(fp);
return boxa;
}
/*!
* pixaaReadStream()
*
* Input: stream
* Return: pixaa, or null on error
*/
PIXAA *
pixaaReadStream(FILE *fp)
{
l_int32 n, i, version;
l_int32 ignore;
BOXA *boxa;
PIXA *pixa;
PIXAA *pixaa;
PROCNAME("pixaaReadStream");
if (!fp)
return (PIXAA *)ERROR_PTR("stream not defined", procName, NULL);
if (fscanf(fp, "\nPixaa Version %d\n", &version) != 1)
return (PIXAA *)ERROR_PTR("not a pixaa file", procName, NULL);
if (version != PIXAA_VERSION_NUMBER)
return (PIXAA *)ERROR_PTR("invalid pixaa version", procName, NULL);
if (fscanf(fp, "Number of pixa = %d\n", &n) != 1)
return (PIXAA *)ERROR_PTR("not a pixaa file", procName, NULL);
if ((pixaa = pixaaCreate(n)) == NULL)
return (PIXAA *)ERROR_PTR("pixaa not made", procName, NULL);
if ((boxa = boxaReadStream(fp)) == NULL)
return (PIXAA *)ERROR_PTR("boxa not made", procName, NULL);
boxaDestroy(&pixaa->boxa);
pixaa->boxa = boxa;
for (i = 0; i < n; i++) {
if ((fscanf(fp, "\n\n --------------- pixa[%d] ---------------\n",
&ignore)) != 1) {
return (PIXAA *)ERROR_PTR("text reading", procName, NULL);
}
if ((pixa = pixaReadStream(fp)) == NULL)
return (PIXAA *)ERROR_PTR("pixa not read", procName, NULL);
pixaaAddPixa(pixaa, pixa, L_INSERT);
}
return pixaa;
}
/*!
* boxaaReadStreamVersion2()
*
* Input: stream
* Return: boxaa, or null on error
*
*/
BOXAA *
boxaaReadStreamVersion2(FILE *fp)
{
l_int32 n, i, x, y, w, h, version;
l_int32 ignore;
BOXA *boxa;
BOXAA *baa;
PROCNAME("boxaaReadStreamVersion2");
if (!fp)
return (BOXAA *)ERROR_PTR("stream not defined", procName, NULL);
if (fscanf(fp, "\nBoxaa Version %d\n", &version) != 1)
return (BOXAA *)ERROR_PTR("not a boxaa file", procName, NULL);
if (version != 2) {
fprintf(stderr, "This is version %d\n", version);
return (BOXAA *)ERROR_PTR("Not old version 2", procName, NULL);
}
if (fscanf(fp, "Number of boxa = %d\n", &n) != 1)
return (BOXAA *)ERROR_PTR("not a boxaa file", procName, NULL);
if ((baa = boxaaCreate(n)) == NULL)
return (BOXAA *)ERROR_PTR("boxaa not made", procName, NULL);
for (i = 0; i < n; i++) {
if (fscanf(fp, " Boxa[%d]: x = %d, y = %d, w = %d, h = %d\n",
&ignore, &x, &y, &w, &h) != 5)
return (BOXAA *)ERROR_PTR("boxa descr not valid", procName, NULL);
if ((boxa = boxaReadStream(fp)) == NULL)
return (BOXAA *)ERROR_PTR("boxa not made", procName, NULL);
boxaaAddBoxa(baa, boxa, L_INSERT);
}
return baa;
}
int main(int argc,
char **argv)
{
l_uint8 *array1, *array2;
l_int32 n1, n2, n3;
size_t size1, size2;
FILE *fp;
BOXA *boxa1, *boxa2;
PIX *pixs, *pix1;
PIXA *pixa1;
PIXCMAP *cmap;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
pixs = pixRead("feyn.tif");
/* --------------------------------------------------------------- *
* Test pixConnComp() and pixCountConnComp(), *
* with output to both boxa and pixa *
* --------------------------------------------------------------- */
/* First, test with 4-cc */
boxa1= pixConnComp(pixs, &pixa1, 4);
n1 = boxaGetCount(boxa1);
boxa2= pixConnComp(pixs, NULL, 4);
n2 = boxaGetCount(boxa2);
pixCountConnComp(pixs, 4, &n3);
fprintf(stderr, "Number of 4 c.c.: n1 = %d; n2 = %d, n3 = %d\n",
n1, n2, n3);
regTestCompareValues(rp, n1, n2, 0); /* 0 */
regTestCompareValues(rp, n1, n3, 0); /* 1 */
regTestCompareValues(rp, n1, 4452, 0); /* 2 */
pix1 = pixaDisplay(pixa1, pixGetWidth(pixs), pixGetHeight(pixs));
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 3 */
regTestComparePix(rp, pixs, pix1); /* 4 */
pixaDestroy(&pixa1);
boxaDestroy(&boxa1);
boxaDestroy(&boxa2);
pixDestroy(&pix1);
/* Test with 8-cc */
boxa1= pixConnComp(pixs, &pixa1, 8);
n1 = boxaGetCount(boxa1);
boxa2= pixConnComp(pixs, NULL, 8);
n2 = boxaGetCount(boxa2);
pixCountConnComp(pixs, 8, &n3);
fprintf(stderr, "Number of 8 c.c.: n1 = %d; n2 = %d, n3 = %d\n",
n1, n2, n3);
regTestCompareValues(rp, n1, n2, 0); /* 5 */
regTestCompareValues(rp, n1, n3, 0); /* 6 */
regTestCompareValues(rp, n1, 4305, 0); /* 7 */
pix1 = pixaDisplay(pixa1, pixGetWidth(pixs), pixGetHeight(pixs));
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 8 */
regTestComparePix(rp, pixs, pix1); /* 9 */
pixaDestroy(&pixa1);
boxaDestroy(&boxa1);
boxaDestroy(&boxa2);
pixDestroy(&pix1);
/* --------------------------------------------------------------- *
* Test boxa I/O *
* --------------------------------------------------------------- */
lept_mkdir("lept/conn");
boxa1 = pixConnComp(pixs, NULL, 4);
fp = lept_fopen("/tmp/lept/conn/boxa1.ba", "wb+");
boxaWriteStream(fp, boxa1);
lept_fclose(fp);
fp = lept_fopen("/tmp/lept/conn/boxa1.ba", "rb");
boxa2 = boxaReadStream(fp);
lept_fclose(fp);
fp = lept_fopen("/tmp/lept/conn/boxa2.ba", "wb+");
boxaWriteStream(fp, boxa2);
lept_fclose(fp);
array1 = l_binaryRead("/tmp/lept/conn/boxa1.ba", &size1);
array2 = l_binaryRead("/tmp/lept/conn/boxa2.ba", &size2);
regTestCompareStrings(rp, array1, size1, array2, size2); /* 10 */
lept_free(array1);
lept_free(array2);
boxaDestroy(&boxa1);
boxaDestroy(&boxa2);
/* --------------------------------------------------------------- *
* Just for fun, display each component as a random color in *
* cmapped 8 bpp. Background is color 0; it is set to white. *
* --------------------------------------------------------------- */
boxa1 = pixConnComp(pixs, &pixa1, 4);
pix1 = pixaDisplayRandomCmap(pixa1, pixGetWidth(pixs), pixGetHeight(pixs));
cmap = pixGetColormap(pix1);
pixcmapResetColor(cmap, 0, 255, 255, 255); /* reset background to white */
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 11 */
if (rp->display) pixDisplay(pix1, 100, 100);
boxaDestroy(&boxa1);
pixDestroy(&pix1);
pixaDestroy(&pixa1);
pixDestroy(&pixs);
return regTestCleanup(rp);
}
main(int argc,
char **argv)
{
l_uint8 *array1, *array2;
l_int32 i, n, np, same, diff, nbytes1, nbytes2;
FILE *fp;
BOX *box;
BOXA *boxa, *boxa2;
PIX *pixs, *pixd;
PIXA *pixa;
PIXCMAP *cmap;
static char mainName[] = "conncomp_reg";
if (argc != 1)
exit(ERROR_INT(" Syntax: conncomp_reg", mainName, 1));
if ((pixs = pixRead("feyn.tif")) == NULL)
exit(ERROR_INT("pixs not made", mainName, 1));
/* Test pixConnComp() with output to both boxa and pixa */
/* First, test with 4-cc */
boxa = pixConnComp(pixs, &pixa, 4);
n = boxaGetCount(boxa);
fprintf(stderr, "Number of 4 c.c. b.b: %d\n", n);
np = pixaGetCount(pixa);
fprintf(stderr, "Number of 4 c.c. pix: %d\n", np);
pixd = pixaDisplay(pixa, pixGetWidth(pixs), pixGetHeight(pixs));
pixWrite("/tmp/junkout1.png", pixd, IFF_PNG);
pixEqual(pixs, pixd, &same);
if (same == 1)
fprintf(stderr, "Source and reconstructed pix are the same.\n");
else
fprintf(stderr, "Error: source and reconstructed pix differ!\n");
pixaDestroy(&pixa);
boxaDestroy(&boxa);
pixDestroy(&pixd);
/* Test with 8-cc */
boxa = pixConnComp(pixs, &pixa, 8);
n = boxaGetCount(boxa);
fprintf(stderr, "Number of 8 c.c. b.b: %d\n", n);
np = pixaGetCount(pixa);
fprintf(stderr, "Number of 8 c.c. pix: %d\n", np);
pixd = pixaDisplay(pixa, pixGetWidth(pixs), pixGetHeight(pixs));
pixWrite("/tmp/junkout2.png", pixd, IFF_PNG);
pixEqual(pixs, pixd, &same);
if (same == 1)
fprintf(stderr, "Source and reconstructed pix are the same.\n");
else
fprintf(stderr, "Error: source and reconstructed pix differ!\n");
pixaDestroy(&pixa);
boxaDestroy(&boxa);
pixDestroy(&pixd);
/* Test i/o */
boxa = pixConnComp(pixs, NULL, 4);
fp = fopen("/tmp/junk1.ba", "wb+");
boxaWriteStream(fp, boxa);
fclose(fp);
fp = fopen("/tmp/junk1.ba", "r");
boxa2 = boxaReadStream(fp);
fclose(fp);
fp = fopen("/tmp/junk2.ba", "wb+");
boxaWriteStream(fp, boxa2);
fclose(fp);
array1 = arrayRead("/tmp/junk1.ba", &nbytes1);
array2 = arrayRead("/tmp/junk2.ba", &nbytes2);
diff = strcmp((char *)array1, (char *)array2);
if (nbytes1 != nbytes2 || diff)
fprintf(stderr, "I/O error for boxes.\n");
else
fprintf(stderr, "I/O valid for boxes.\n");
FREE(array1);
FREE(array2);
boxaDestroy(&boxa);
boxaDestroy(&boxa2);
/* Just for fun, display each component as a random color
* in cmapped 8 bpp. Background is color 0; it is set to white. */
boxa = pixConnComp(pixs, &pixa, 4);
pixd = pixaDisplayRandomCmap(pixa, pixGetWidth(pixs), pixGetHeight(pixs));
cmap = pixGetColormap(pixd);
pixcmapResetColor(cmap, 0, 255, 255, 255); /* reset background to white */
pixDisplay(pixd, 100, 100);
boxaDestroy(&boxa);
pixDestroy(&pixd);
pixaDestroy(&pixa);
pixDestroy(&pixs);
exit(0);
}
