hydrus/hydrus/core/HydrusFlashHandling.py

75 lines
1.9 KiB
Python

import os
import subprocess
import time
from hydrus.core import HydrusConstants as HC
from hydrus.core import HydrusData
from hydrus.core import HydrusThreading
from hydrus.external import hexagonitswfheader
if HC.PLATFORM_LINUX:
SWFRENDER_PATH = os.path.join( HC.BIN_DIR, 'swfrender_linux' )
elif HC.PLATFORM_MACOS:
SWFRENDER_PATH = os.path.join( HC.BIN_DIR, 'swfrender_osx' )
elif HC.PLATFORM_WINDOWS:
SWFRENDER_PATH = os.path.join( HC.BIN_DIR, 'swfrender_win32.exe' )
# to all out there who write libraries:
# hexagonit.swfheader is a perfect library. it is how you are supposed to do it.
def GetFlashProperties( path ):
with open( path, 'rb' ) as f:
metadata = hexagonitswfheader.parse( f )
# abs since one flash delivered negatives, and hexagonit calcs by going width = ( xmax - xmin ) etc...
width = abs( metadata[ 'width' ] )
height = abs( metadata[ 'height' ] )
num_frames = metadata[ 'frames' ]
fps = metadata[ 'fps' ]
if fps is None or fps == 0:
fps = 1
duration = ( 1000 * num_frames ) // fps
return ( ( width, height ), duration, num_frames )
def RenderPageToFile( path, temp_path, page_index ):
cmd = [ SWFRENDER_PATH, path, '-o', temp_path, '-p', str( page_index ) ]
timeout = HydrusData.GetNow() + 60
sbp_kwargs = HydrusData.GetSubprocessKWArgs()
HydrusData.CheckProgramIsNotShuttingDown()
p = subprocess.Popen( cmd, **sbp_kwargs )
while p.poll() is None:
if HydrusData.TimeHasPassed( timeout ):
p.terminate()
raise Exception( 'Could not render the swf page within 60 seconds!' )
time.sleep( 0.5 )
HydrusThreading.SubprocessCommunicate( p )