diff options
author | Campbell Barton <ideasman42@gmail.com> | 2010-07-18 15:46:25 +0400 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2010-07-18 15:46:25 +0400 |
commit | 0a2e485926b6bbeb866da107260030c7cbffa291 (patch) | |
tree | ad2516f4ba430075b065615d9cbefce4cb4c70b9 /release/freedesktop | |
parent | 0a34050e90e76ac5ee8c17987884190344c83d38 (diff) |
move the thumbnailer to bin/
Diffstat (limited to 'release/freedesktop')
-rwxr-xr-x | release/freedesktop/blender-thumbnailer.py | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/release/freedesktop/blender-thumbnailer.py b/release/freedesktop/blender-thumbnailer.py deleted file mode 100755 index 27d6259d172..00000000000 --- a/release/freedesktop/blender-thumbnailer.py +++ /dev/null @@ -1,131 +0,0 @@ -#!/usr/bin/python - -# ##### BEGIN GPL LICENSE BLOCK ##### -# -# This program is free software; you can redistribute it and/or -# modify it under the terms of the GNU General Public License -# as published by the Free Software Foundation; either version 2 -# of the License, or (at your option) any later version. -# -# This program is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with this program; if not, write to the Free Software Foundation, -# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. -# -# ##### END GPL LICENSE BLOCK ##### - -""" -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" -""" - -import struct - -def blend_extract_thumb(path): - import os - - # 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') - - blendfile = open(path, 'rb') - - head = blendfile.read(12) - - if head[0:2] == b'\x1f\x8b': # gzip magic - import gzip - blendfile.close() - blendfile = gzip.open(path, 'rb') - head = blendfile.read(12) - - if not head.startswith(b'BLENDER'): - blendfile.close() - return None, 0, 0 - - is_64_bit = (head[7] == b'-') - - # true for PPC, false for X86 - is_big_endian = (head[8] == b'V') - - # blender pre 2.5 had no thumbs - if head[9:11] <= b'24': - return None, 0, 0 - - sizeof_bhead = 24 if is_64_bit else 20 - int_endian_pair = '>ii' if is_big_endian else '<ii' - - while True: - bhead = blendfile.read(sizeof_bhead) - - if len(bhead) < sizeof_bhead: - return None, 0, 0 - - 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 - except struct.error: - return None, 0, 0 - - length -= 8 # sizeof(int) * 2 - - if length != x * y * 4: - return None, 0, 0 - - image_buffer = blendfile.read(length) - - if len(image_buffer) != length: - return None, 0, 0 - - return image_buffer, x, y - - -def write_png(buf, width, height): - import zlib - - # reverse the vertical line order and add null bytes at the start - width_byte_4 = width * 4 - raw_data = b"".join([b'\x00' + buf[span:span + width_byte_4] for span in range((height - 1) * width * 4, -1, - width_byte_4)]) - - def png_pack(png_tag, data): - chunk_head = png_tag + data - return struct.pack("!I", len(data)) + chunk_head + struct.pack("!I", 0xFFFFFFFF & zlib.crc32(chunk_head)) - - return b"".join([ - b'\x89PNG\r\n\x1a\n', - png_pack(b'IHDR', struct.pack("!2I5B", width, height, 8, 6, 0, 0, 0)), - png_pack(b'IDAT', zlib.compress(raw_data, 9)), - png_pack(b'IEND', b'')]) - - -if __name__ == '__main__': - import sys - - if len(sys.argv) < 2: - 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] - - f = open(file_out, "wb") - f.write(write_png(buf, width, height)) - f.close() |