bf1ca90a9c
- pdf.rs: Ghostscript-based PDF to TIFF-F conversion - tiff_to_fax_document: Parse TIFF and convert to 1-bit fax format - CLI: Add 'convert' subcommand for dry testing - CLI: Add resolution option for send command - Test files for PDF/TIFF conversion validation
76 lines
2.8 KiB
Python
76 lines
2.8 KiB
Python
#!/usr/bin/env python3
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import subprocess
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import os
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# Test PDF to TIFF-F conversion
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pdf_path = "/Users/accusys/telfax/test/testfax.pdf"
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tiff_path = "/Users/accusys/telfax/test/testfax_converted.tif"
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print("=== Testing PDF → TIFF-F Conversion ===")
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# Run ghostscript
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result = subprocess.run([
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"gs", "-dBATCH", "-dNOPAUSE", "-q",
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"-sDEVICE=tiffg3",
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"-r204x196", # Fine resolution
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"-sOutputFile", tiff_path,
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pdf_path
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], capture_output=True, text=True)
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if result.returncode != 0:
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print(f"Ghostscript failed: {result.stderr}")
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exit(1)
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# Check output
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if os.path.exists(tiff_path):
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size = os.path.getsize(tiff_path)
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print(f"✓ TIFF-F created: {tiff_path}")
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print(f" Size: {size} bytes")
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# Get TIFF info
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import struct
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with open(tiff_path, 'rb') as f:
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header = f.read(8)
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if header[:2] == b'II':
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print(" Byte order: Little-endian")
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elif header[:2] == b'MM':
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print(" Byte order: Big-endian")
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# Read IFD offset
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if header[:2] == b'II':
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ifd_offset = struct.unpack('<I', header[4:8])[0]
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else:
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ifd_offset = struct.unpack('>I', header[4:8])[0]
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f.seek(ifd_offset)
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num_entries = struct.unpack('<H' if header[:2] == b'II' else '>H', f.read(2))[0]
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print(f" IFD entries: {num_entries}")
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# Read key tags
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for i in range(num_entries):
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tag = struct.unpack('<H' if header[:2] == b'II' else '>H', f.read(2))[0]
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type_ = struct.unpack('<H' if header[:2] == b'II' else '>H', f.read(2))[0]
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count = struct.unpack('<I' if header[:2] == b'II' else '>I', f.read(4))[0]
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value_offset = f.read(4)
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# Tags of interest: 256=width, 257=height, 259=compression, 262=photometric
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if tag == 256: # Width
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val = struct.unpack('<I' if header[:2] == b'II' else '>I', value_offset)[0]
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print(f" Width: {val} pixels")
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elif tag == 257: # Height
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val = struct.unpack('<I' if header[:2] == b'II' else '>I', value_offset)[0]
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print(f" Height: {val} lines")
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elif tag == 259: # Compression
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val = struct.unpack('<H' if header[:2] == b'II' else '>H', value_offset[:2])[0]
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comp_names = {1: "None", 3: "Group 3 MH", 4: "Group 4 MMR"}
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print(f" Compression: {comp_names.get(val, val)}")
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elif tag == 262: # PhotometricInterpretation
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val = struct.unpack('<H' if header[:2] == b'II' else '>H', value_offset[:2])[0]
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photo_names = {0: "WhiteIsZero", 1: "BlackIsZero"}
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print(f" Photometric: {photo_names.get(val, val)}")
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else:
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print("✗ TIFF-F not created")
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exit(1)
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print("\n=== Conversion Test Passed ===") |