示例#1
0
int main(int argc,
         char **argv) {
    l_int32 w, d, tilewidth;
    PIX *pixs;
    PIXA *pixa, *pixad1, *pixad2;
    PIXAA *pixaa1, *pixaa2;
    static char mainName[] = "pixaatest";

    if (argc != 1)
        return ERROR_INT(" Syntax: pixaatest", mainName, 1);

    /* Read in file, split it into a set of tiles, and generate a pdf.
     * Two things to note for these tiny images:
     *  (1) If you use dct format (jpeg) for each image instead of
     *      flate (lossless), the quantization will be apparent.
     *  (2) If the resolution in pixaConvertToPdf() is above 50, and
     *      you add a red boundary, you will see errors in the boundary
     *      width.
     */
    pixs = pixRead("test24.jpg");
    pixGetDimensions(pixs, &w, NULL, &d);
    pixa = pixaSplitPix(pixs, nx, ny, 0, 0);
/*    pixa = pixaSplitPix(pixs, nx, ny, 2, 0xff000000);  */ /* red border */
    pixWrite("/tmp/junk0", pixa->pix[0], IFF_PNG);
    pixWrite("/tmp/junk9", pixa->pix[9], IFF_PNG);
    pixaConvertToPdf(pixa, 50, 1.0, 0, 95, "individual", "/tmp/junkout0.pdf");

    /* Generate two pixaa by sampling the pixa, and write them to file */
    pixaa1 = pixaaCreateFromPixa(pixa, nx, L_CHOOSE_CONSECUTIVE, L_CLONE);
    pixaa2 = pixaaCreateFromPixa(pixa, nx, L_CHOOSE_SKIP_BY, L_CLONE);
    pixaaWrite("/tmp/pixaa1.paa", pixaa1);
    pixaaWrite("/tmp/pixaa2.paa", pixaa2);
    pixaDestroy(&pixa);
    pixaaDestroy(&pixaa1);
    pixaaDestroy(&pixaa2);

    /* Read each pixaa from file; tile/scale into a pixa */
    pixaa1 = pixaaRead("/tmp/pixaa1.paa");
    pixaa2 = pixaaRead("/tmp/pixaa2.paa");
    tilewidth = w / nx;
    pixad1 = pixaaDisplayTiledAndScaled(pixaa1, d, tilewidth, ncols, 0, 10, 0);
    pixad2 = pixaaDisplayTiledAndScaled(pixaa2, d, tilewidth, ncols, 0, 10, 0);

    /* Generate a pdf from each pixa */
    pixaConvertToPdf(pixad1, 50, 1.0, 0, 75, "consecutive", "/tmp/junkout1.pdf");
    pixaConvertToPdf(pixad2, 50, 1.0, 0, 75, "skip_by", "/tmp/junkout2.pdf");

    /* Write each pixa to a set of files, and generate a PS */
    pixaWriteFiles("/tmp/junksplit1.", pixad1, IFF_JFIF_JPEG);
    pixaWriteFiles("/tmp/junksplit2.", pixad2, IFF_JFIF_JPEG);
    convertFilesToPS("/tmp", "junksplit1", 40, "/tmp/junkout1.ps");
    convertFilesToPS("/tmp", "junksplit2", 40, "/tmp/junkout2.ps");

    pixDestroy(&pixs);
    pixaaDestroy(&pixaa1);
    pixaaDestroy(&pixaa2);
    pixaDestroy(&pixad1);
    pixaDestroy(&pixad2);
    return 0;
}
示例#2
0
jboolean Java_com_googlecode_leptonica_android_WriteFile_nativeWriteFiles(JNIEnv *env,
                                                                          jclass clazz,
                                                                          jint nativePixa,
                                                                          jstring rootName,
                                                                          jint format) {
  LOGV(__FUNCTION__);

  PIXA *pixas = (PIXA *) nativePixa;

  const char *c_rootName = env->GetStringUTFChars(rootName, NULL);
  if (c_rootName == NULL) {
    LOGE("could not extract rootName string!");
    return JNI_FALSE;
  }

  jboolean result = JNI_TRUE;

  if (pixaWriteFiles(c_rootName, pixas, (l_uint32) format)) {
    LOGE("could not write pixa data to %s", c_rootName);
    result = JNI_FALSE;
  }

  env->ReleaseStringUTFChars(rootName, c_rootName);

  return result;
}