Aj toto skonci s chybovou hlaskou: ... >>> fp2 = C.pythonapi.PyFile_AsFile(open("phototest.tif")) >>> npages = lib.tiffGetCount(fp2) Error in fopenTiff: invalid file descriptor Error in tiffGetCount: tif not open for read
Zd. 2010/11/24 Petr Messner <petr.mess...@gmail.com> > Jenom takovy napad - nebylo by lepsi fp = > C.pythonapi.PyFile_AsFile(open("phototest.tif")) ? > > PM > > > 2010/11/24 Zdenko Podobný <zdpos...@gmail.com> > >> Zdravim, >> >> potrebujem v pythone robit s viacstrankovymi tiff subormi a po roznych >> testoch a googlovani som skoncil na tom, ze cisto python riesenie >> neexistuje. Najrozumnejsie sa mi javi pouzitie ctypes a kniznice leptonica. >> Problem je v tom, ze v niektorych pripadoch jej potrebujem posunut file >> object. >> >> Napr. (C kod): >> filein = "phototest.tif"; >> fp = fopen(filein, "r"); >> tiffGetCount(fp, &npages); >> fprintf(stderr, " Tiff: %d pages\n", npages); >> fclose(fp); >> >> Ked to skusim spravit v pythone, tak dostanem chybu: >> >> import ctypes >> leptonica = ctypes.CDLL("liblept.so") >> filein = "phototest.tif" >> fp = open(filein, "r") >> npages = leptonica.tiffGetCount(fp) >> Traceback (most recent call last): >> File "<stdin>", line 1, in <module> >> ctypes.ArgumentError: argument 1: <type 'exceptions.TypeError'>: Don't >> know how to convert parameter 1 >> >> >> Skusal som to aj cez PyFile_AsFile ale to tiez skonci s chybou: >> >> >>> import ctypes as C >> >>> lib = C.CDLL("liblept.so") >> >>> class FILE(C.Structure): >> ... pass >> ... >> >>> FILE_P = C.POINTER(FILE) >> >>> C.pythonapi.PyFile_AsFile.argtypes = [C.py_object] >> >>> C.pythonapi.PyFile_AsFile.restype = FILE_P >> >>> fp = C.pythonapi.PyFile_AsFile("phototest.tif") >> >>> npages = lib.tiffGetCount(fp) >> Error in tiffGetCount: stream not defined >> >> Skusal som googlovat, ale sa nic funkcne sa mi nepodarilo zostavit... Vie >> mi s tym niekto pomoc? >> >> Zd. >> >> _______________________________________________ >> Python mailing list >> Python@py.cz >> http://www.py.cz/mailman/listinfo/python >> > > > _______________________________________________ > Python mailing list > Python@py.cz > http://www.py.cz/mailman/listinfo/python >
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