jboolean Java_com_googlecode_leptonica_android_WriteFile_nativeWriteImpliedFormat(JNIEnv *env,
jclass clazz,
jlong nativePix,
jstring fileName,
jint quality,
jboolean progressive) {
PIX *pixs = (PIX *) nativePix;
const char *c_fileName = env->GetStringUTFChars(fileName, NULL);
if (c_fileName == NULL) {
LOGE("could not extract fileName string!");
return JNI_FALSE;
}
jboolean result = JNI_TRUE;
if (pixWriteImpliedFormat(c_fileName, pixs, (l_int32) quality, (progressive == JNI_TRUE))) {
LOGE("could not write pix data to %s", c_fileName);
result = JNI_FALSE;
}
env->ReleaseStringUTFChars(fileName, c_fileName);
return result;
}
int main(int argc,
char **argv)
{
char *filein, *fileout;
l_int32 ret;
l_float32 deg2rad;
l_float32 angle, conf, score;
PIX *pix, *pixs, *pixd;
static char mainName[] = "skewtest";
if (argc != 3)
return ERROR_INT(" Syntax: skewtest filein fileout", mainName, 1);
filein = argv[1];
fileout = argv[2];
setLeptDebugOK(1);
pixd = NULL;
deg2rad = 3.1415926535 / 180.;
if ((pixs = pixRead(filein)) == NULL)
return ERROR_INT("pixs not made", mainName, 1);
/* Find the skew angle various ways */
pix = pixConvertTo1(pixs, 130);
pixWrite("/tmp/binarized.tif", pix, IFF_TIFF_G4);
pixFindSkew(pix, &angle, &conf);
fprintf(stderr, "pixFindSkew():\n"
" conf = %5.3f, angle = %7.3f degrees\n", conf, angle);
pixFindSkewSweepAndSearchScorePivot(pix, &angle, &conf, &score,
SWEEP_REDUCTION2, SEARCH_REDUCTION,
0.0, SWEEP_RANGE2, SWEEP_DELTA2,
SEARCH_MIN_DELTA,
L_SHEAR_ABOUT_CORNER);
fprintf(stderr, "pixFind...Pivot(about corner):\n"
" conf = %5.3f, angle = %7.3f degrees, score = %f\n",
conf, angle, score);
pixFindSkewSweepAndSearchScorePivot(pix, &angle, &conf, &score,
SWEEP_REDUCTION2, SEARCH_REDUCTION,
0.0, SWEEP_RANGE2, SWEEP_DELTA2,
SEARCH_MIN_DELTA,
L_SHEAR_ABOUT_CENTER);
fprintf(stderr, "pixFind...Pivot(about center):\n"
" conf = %5.3f, angle = %7.3f degrees, score = %f\n",
conf, angle, score);
/* Use top-level */
pixd = pixDeskew(pixs, 0);
pixWriteImpliedFormat(fileout, pixd, 0, 0);
#if 0
/* Do it piecemeal; fails if outside the range */
if (pixGetDepth(pixs) == 1) {
pixd = pixDeskew(pix, DESKEW_REDUCTION);
pixWrite(fileout, pixd, IFF_PNG);
}
else {
ret = pixFindSkewSweepAndSearch(pix, &angle, &conf, SWEEP_REDUCTION2,
SEARCH_REDUCTION, SWEEP_RANGE2,
SWEEP_DELTA2, SEARCH_MIN_DELTA);
if (ret)
L_WARNING("skew angle not valid\n", mainName);
else {
fprintf(stderr, "conf = %5.3f, angle = %7.3f degrees\n",
conf, angle);
if (conf > 2.5)
pixd = pixRotate(pixs, angle * deg2rad, L_ROTATE_AREA_MAP,
L_BRING_IN_WHITE, 0, 0);
else
pixd = pixClone(pixs);
pixWrite(fileout, pixd, IFF_PNG);
pixDestroy(&pixd);
}
}
#endif
pixDestroy(&pixs);
pixDestroy(&pix);
pixDestroy(&pixd);
return 0;
}
