def GenerateThumbnail( path, dimensions = HC.UNSCALED_THUMBNAIL_DIMENSIONS ):
mime = GetMime( path )
f = cStringIO.StringIO()
if mime in HC.IMAGES:
pil_image = HydrusImageHandling.GeneratePILImage( path )
SaveThumbnailToStream( pil_image, dimensions, f )
elif mime == HC.APPLICATION_FLASH:
( os_file_handle, temp_path ) = HydrusPaths.GetTempPath()
try:
HydrusFlashHandling.RenderPageToFile( path, temp_path, 1 )
pil_image = HydrusImageHandling.GeneratePILImage( temp_path )
SaveThumbnailToStream( pil_image, dimensions, f )
except:
flash_default_path = os.path.join( HC.STATIC_DIR, 'flash.png' )
pil_image = HydrusImageHandling.GeneratePILImage( flash_default_path )
SaveThumbnailToStream( pil_image, dimensions, f )
finally:
del pil_image
HydrusPaths.CleanUpTempPath( os_file_handle, temp_path )
else:
( size, mime, width, height, duration, num_frames, num_words ) = GetFileInfo( path )
cropped_dimensions = HydrusImageHandling.GetThumbnailResolution( ( width, height ), dimensions )
renderer = HydrusVideoHandling.VideoRendererFFMPEG( path, mime, duration, num_frames, cropped_dimensions )
numpy_image = renderer.read_frame()
if numpy_image is None:
raise Exception( 'Could not create a thumbnail from that video!' )
pil_image = HydrusImageHandling.GeneratePILImageFromNumpyImage( numpy_image )
SaveThumbnailToStream( pil_image, dimensions, f )
f.seek( 0 )
thumbnail = f.read()
f.close()
return thumbnail
def GenerateThumbnail(path,
mime,
dimensions=HC.UNSCALED_THUMBNAIL_DIMENSIONS,
percentage_in=35):
if mime in (HC.IMAGE_JPEG, HC.IMAGE_PNG, HC.IMAGE_GIF):
thumbnail = GenerateThumbnailFromStaticImage(path, dimensions, mime)
else:
f = cStringIO.StringIO()
if mime == HC.APPLICATION_FLASH:
(os_file_handle, temp_path) = HydrusPaths.GetTempPath()
try:
HydrusFlashHandling.RenderPageToFile(path, temp_path, 1)
pil_image = HydrusImageHandling.GeneratePILImage(temp_path)
SaveThumbnailToStreamPIL(pil_image, dimensions, f)
except:
flash_default_path = os.path.join(HC.STATIC_DIR, 'flash.png')
pil_image = HydrusImageHandling.GeneratePILImage(
flash_default_path)
SaveThumbnailToStreamPIL(pil_image, dimensions, f)
finally:
del pil_image
HydrusPaths.CleanUpTempPath(os_file_handle, temp_path)
else:
(size, mime, width, height, duration, num_frames,
num_words) = GetFileInfo(path)
cropped_dimensions = HydrusImageHandling.GetThumbnailResolution(
(width, height), dimensions)
renderer = HydrusVideoHandling.VideoRendererFFMPEG(
path, mime, duration, num_frames, cropped_dimensions)
renderer.read_frame(
) # this initialises the renderer and loads the first frame as a fallback
desired_thumb_frame = int((percentage_in / 100.0) * num_frames)
renderer.set_position(desired_thumb_frame)
numpy_image = renderer.read_frame()
if numpy_image is None:
raise Exception(
'Could not create a thumbnail from that video!')
pil_image = HydrusImageHandling.GeneratePILImageFromNumpyImage(
numpy_image)
SaveThumbnailToStreamPIL(pil_image, dimensions, f)
f.seek(0)
thumbnail = f.read()
f.close()
return thumbnail