diff options
Diffstat (limited to 'release/bin/blender-thumbnailer.py')
| -rwxr-xr-x | release/bin/blender-thumbnailer.py | 54 |
1 files changed, 39 insertions, 15 deletions
diff --git a/release/bin/blender-thumbnailer.py b/release/bin/blender-thumbnailer.py index be870560110..8b93eebdeec 100755 --- a/release/bin/blender-thumbnailer.py +++ b/release/bin/blender-thumbnailer.py @@ -18,40 +18,65 @@ # # ##### END GPL LICENSE BLOCK ##### +# <pep8 compliant> + """ Thumbnailer runs with python 2.6 and 3.x. To run automatically with nautilus: gconftool --type boolean --set /desktop/gnome/thumbnailers/application@x-blender/enable true - gconftool --type string --set /desktop/gnome/thumbnailers/application@x-blender/command "blender-thumbnailer.py %i %o" + gconftool --type string --set /desktop/gnome/thumbnailers/application@x-blender/command "blender-thumbnailer.py %u %o" """ import struct + +def open_wrapper_get(): + """ wrap OS spesific read functionality here, fallback to 'open()' + """ + + def open_gio(path, mode): + g_file = gio.File(path).read() + g_file.orig_seek = g_file.seek + + def new_seek(offset, whence=0): + return g_file.orig_seek(offset, [1, 0, 2][whence]) + + g_file.seek = new_seek + return g_file + + try: + import gio + return open_gio + except ImportError: + return open + + def blend_extract_thumb(path): import os + open_wrapper = open_wrapper_get() # def MAKE_ID(tag): ord(tag[0])<<24 | ord(tag[1])<<16 | ord(tag[2])<<8 | ord(tag[3]) - REND = 1145980242 # MAKE_ID(b'REND') - TEST = 1414743380 # MAKE_ID(b'TEST') + REND = 1145980242 # MAKE_ID(b'REND') + TEST = 1414743380 # MAKE_ID(b'TEST') - blendfile = open(path, 'rb') + blendfile = open_wrapper(path, 'rb') head = blendfile.read(12) - if head[0:2] == b'\x1f\x8b': # gzip magic + if head[0:2] == b'\x1f\x8b': # gzip magic import gzip blendfile.close() - blendfile = gzip.open(path, 'rb') + blendfile = gzip.GzipFile('', 'rb', 0, open_wrapper(path, 'rb')) head = blendfile.read(12) if not head.startswith(b'BLENDER'): blendfile.close() return None, 0, 0 - is_64_bit = (head[7] == b'-') + is_64_bit = (head[7] == b'-'[0]) # true for PPC, false for X86 - is_big_endian = (head[8] == b'V') + is_big_endian = (head[8] == b'V'[0]) # blender pre 2.5 had no thumbs if head[9:11] <= b'24': @@ -66,23 +91,22 @@ def blend_extract_thumb(path): if len(bhead) < sizeof_bhead: return None, 0, 0 - code, length = struct.unpack(int_endian_pair, bhead[0:8]) # 8 == sizeof(int) * 2 + code, length = struct.unpack(int_endian_pair, bhead[0:8]) # 8 == sizeof(int) * 2 if code == REND: blendfile.seek(length, os.SEEK_CUR) else: break - - + if code != TEST: return None, 0, 0 try: - x, y = struct.unpack(int_endian_pair, blendfile.read(8)) # 8 == sizeof(int) * 2 + x, y = struct.unpack(int_endian_pair, blendfile.read(8)) # 8 == sizeof(int) * 2 except struct.error: return None, 0, 0 - length -= 8 # sizeof(int) * 2 + length -= 8 # sizeof(int) * 2 if length != x * y * 4: return None, 0, 0 @@ -116,13 +140,13 @@ def write_png(buf, width, height): if __name__ == '__main__': import sys - if len(sys.argv) < 2: + if len(sys.argv) < 3: print("Expected 2 arguments <input.blend> <output.png>") else: file_in = sys.argv[-2] buf, width, height = blend_extract_thumb(file_in) - + if buf: file_out = sys.argv[-1] |