2013-07-10 20:25:57 +00:00
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import HydrusConstants as HC
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2015-06-17 20:01:41 +00:00
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import HydrusData
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2014-05-28 21:03:24 +00:00
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import HydrusExceptions
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import HydrusImageHandling
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2017-05-24 20:28:24 +00:00
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import HydrusPaths
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2014-05-28 21:03:24 +00:00
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import HydrusThreading
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2014-04-30 21:31:40 +00:00
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import matroska
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2014-06-18 21:53:48 +00:00
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import numpy
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2013-07-10 20:25:57 +00:00
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import os
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2014-06-18 21:53:48 +00:00
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import re
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import subprocess
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2015-09-23 21:21:02 +00:00
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import sys
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import tempfile
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2013-02-19 00:11:43 +00:00
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import traceback
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2014-05-28 21:03:24 +00:00
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import threading
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import time
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2013-02-19 00:11:43 +00:00
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2015-11-18 22:44:07 +00:00
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if HC.PLATFORM_LINUX or HC.PLATFORM_OSX:
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2014-05-28 21:03:24 +00:00
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2015-11-18 22:44:07 +00:00
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FFMPEG_PATH = os.path.join( HC.BIN_DIR, 'ffmpeg' )
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2014-05-28 21:03:24 +00:00
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2015-11-18 22:44:07 +00:00
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elif HC.PLATFORM_WINDOWS:
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2014-05-28 21:03:24 +00:00
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2015-11-18 22:44:07 +00:00
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FFMPEG_PATH = os.path.join( HC.BIN_DIR, 'ffmpeg.exe' )
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2014-05-28 21:03:24 +00:00
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2016-12-07 22:12:52 +00:00
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if not os.path.exists( FFMPEG_PATH ):
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FFMPEG_PATH = os.path.basename( FFMPEG_PATH )
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2014-05-28 21:03:24 +00:00
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2016-12-14 21:19:07 +00:00
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def GetFFMPEGVersion():
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# open the file in a pipe, provoke an error, read output
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cmd = [ FFMPEG_PATH, '-version' ]
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try:
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2017-06-07 22:05:15 +00:00
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proc = subprocess.Popen( cmd, bufsize=10**5, stdout=subprocess.PIPE, stderr=subprocess.PIPE, startupinfo = HydrusData.GetHideTerminalSubprocessStartupInfo() )
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2016-12-14 21:19:07 +00:00
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except Exception as e:
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if not os.path.exists( FFMPEG_PATH ):
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return 'no ffmpeg found'
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else:
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HydrusData.ShowException( e )
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return 'unable to execute ffmpeg'
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infos = proc.stdout.read().decode( 'utf8' )
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proc.terminate()
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del proc
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lines = infos.splitlines()
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if len( lines ) > 0:
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# typically 'ffmpeg version [VERSION] Copyright ...
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top_line = lines[0]
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if top_line.startswith( 'ffmpeg version ' ):
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top_line = top_line.replace( 'ffmpeg version ', '' )
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if ' ' in top_line:
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version_string = top_line.split( ' ' )[0]
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return version_string
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return 'unknown'
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2017-06-07 22:05:15 +00:00
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def GetFFMPEGVideoProperties( path, count_frames_manually = False ):
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2014-06-25 20:37:06 +00:00
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2017-06-07 22:05:15 +00:00
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info = Hydrusffmpeg_parse_infos( path, count_frames_manually = count_frames_manually )
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2014-06-25 20:37:06 +00:00
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( w, h ) = info[ 'video_size' ]
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duration_in_s = info[ 'duration' ]
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duration = int( duration_in_s * 1000 )
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num_frames = info[ 'video_nframes' ]
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return ( ( w, h ), duration, num_frames )
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2014-04-30 21:31:40 +00:00
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def GetMatroskaOrWebm( path ):
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2016-10-12 21:52:50 +00:00
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try:
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# a whole bunch of otherwise good webms aren't parseable by this, so default to 'I guess it is a webm, then.'
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tags = matroska.parse( path )
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ebml = tags[ 'EBML' ][0]
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if ebml[ 'DocType' ][0] == 'matroska':
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return HC.VIDEO_MKV
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except:
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pass
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2014-04-30 21:31:40 +00:00
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2016-10-12 21:52:50 +00:00
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return HC.VIDEO_WEBM
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2014-04-30 21:31:40 +00:00
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def GetMatroskaOrWebMProperties( path ):
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tags = matroska.parse( path )
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segment = tags['Segment'][0]
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info = segment['Info'][0]
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duration = int( ( info['Duration'][0] * info['TimecodeScale'][0] / 1e9 ) * 1000 )
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tracks = segment['Tracks'][0]
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trackentries = tracks['TrackEntry']
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for trackentry in trackentries:
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if 'Video' in trackentry:
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video = trackentry['Video'][0]
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width = video[ 'PixelWidth' ][0]
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height = video[ 'PixelHeight' ][0]
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break
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num_frames = 0
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return ( ( width, height ), duration, num_frames )
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2014-05-28 21:03:24 +00:00
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2016-08-17 20:07:22 +00:00
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def GetMimeFromFFMPEG( path ):
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info = Hydrusffmpeg_parse_infos( path )
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if 'mime_text' in info:
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mime_text = info[ 'mime_text' ]
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if 'matroska' in mime_text or 'webm' in mime_text:
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# typically it is 'matroska,webm'
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return GetMatroskaOrWebm( path )
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2016-10-26 20:45:34 +00:00
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elif mime_text in ( 'mpeg', 'mpegvideo', 'mpegts' ):
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2016-08-17 20:07:22 +00:00
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return HC.VIDEO_MPEG
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2017-02-01 21:11:17 +00:00
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elif mime_text == 'flac':
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return HC.AUDIO_FLAC
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elif mime_text == 'mp3':
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return HC.AUDIO_MP3
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elif mime_text == 'ogg':
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return HC.AUDIO_OGG
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elif mime_text == 'asf':
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if info[ 'video_found' ]:
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return HC.VIDEO_WMV
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else:
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return HC.AUDIO_WMA
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2016-08-17 20:07:22 +00:00
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2017-01-04 22:48:23 +00:00
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return HC.APPLICATION_UNKNOWN
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2016-08-17 20:07:22 +00:00
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2015-11-18 22:44:07 +00:00
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def HasVideoStream( path ):
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2016-02-24 21:42:54 +00:00
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try:
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info = Hydrusffmpeg_parse_infos( path )
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except IOError as e:
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2016-06-01 20:04:15 +00:00
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HydrusData.ShowException( 'Determining the mime for the file at ' + path + ' caused the following problem:' )
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2016-02-24 21:42:54 +00:00
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HydrusData.ShowException( e )
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2016-06-01 20:04:15 +00:00
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2016-02-24 21:42:54 +00:00
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return False
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2015-11-18 22:44:07 +00:00
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return info[ 'video_found' ]
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2014-06-25 20:37:06 +00:00
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# this is cribbed from moviepy
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2017-05-31 21:50:53 +00:00
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def Hydrusffmpeg_parse_infos(filename, print_infos=False, count_frames_manually = False ):
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2014-06-18 21:53:48 +00:00
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"""Get file infos using ffmpeg.
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Returns a dictionnary with the fields:
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"video_found", "video_fps", "duration", "video_nframes",
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"video_duration"
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"audio_found", "audio_fps"
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"video_duration" is slightly smaller than "duration" to avoid
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fetching the uncomplete frames at the end, which raises an error.
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"""
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# open the file in a pipe, provoke an error, read output
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2017-05-24 20:28:24 +00:00
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try:
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filename.encode( 'ascii' ) # throwing unicode at the console is a mess best left for Python 3
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except UnicodeEncodeError:
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( os_file_handle, temp_path ) = HydrusPaths.GetTempPath()
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with open( filename, 'rb' ) as source:
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with open( temp_path, 'wb' ) as dest:
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HydrusPaths.CopyFileLikeToFileLike( source, dest )
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try:
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return Hydrusffmpeg_parse_infos( temp_path )
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finally:
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HydrusPaths.CleanUpTempPath( os_file_handle, temp_path )
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2015-09-23 21:21:02 +00:00
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cmd = [ FFMPEG_PATH, "-i", filename ]
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2014-06-18 21:53:48 +00:00
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is_GIF = filename.endswith('.gif')
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2017-05-31 21:50:53 +00:00
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doing_manual_frame_count = is_GIF or count_frames_manually
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if doing_manual_frame_count:
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2014-06-18 21:53:48 +00:00
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if HC.PLATFORM_WINDOWS: cmd += ["-f", "null", "NUL"]
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else: cmd += ["-f", "null", "/dev/null"]
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2016-12-07 22:12:52 +00:00
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try:
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2017-06-07 22:05:15 +00:00
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proc = subprocess.Popen( cmd, bufsize=10**5, stdout=subprocess.PIPE, stderr=subprocess.PIPE, startupinfo = HydrusData.GetHideTerminalSubprocessStartupInfo() )
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2016-12-07 22:12:52 +00:00
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except:
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if not os.path.exists( FFMPEG_PATH ):
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raise Exception( 'FFMPEG was not found!' )
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else:
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raise
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2014-06-18 21:53:48 +00:00
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infos = proc.stderr.read().decode('utf8')
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2016-08-17 20:07:22 +00:00
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2017-06-07 22:05:15 +00:00
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proc.wait()
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proc.communicate()
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2014-06-18 21:53:48 +00:00
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del proc
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if print_infos:
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# print the whole info text returned by FFMPEG
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2015-11-18 22:44:07 +00:00
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HydrusData.Print( infos )
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2014-06-18 21:53:48 +00:00
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lines = infos.splitlines()
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if "No such file or directory" in lines[-1]:
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raise IOError("%s not found ! Wrong path ?"%filename)
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2016-12-07 22:12:52 +00:00
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if 'Invalid data' in lines[-1]:
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raise HydrusExceptions.MimeException( 'FFMPEG could not parse.' )
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2014-06-18 21:53:48 +00:00
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result = dict()
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# get duration (in seconds)
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2014-06-25 20:37:06 +00:00
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# Duration: 00:00:02.46, start: 0.033000, bitrate: 1069 kb/s
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2014-06-18 21:53:48 +00:00
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try:
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keyword = ('frame=' if is_GIF else 'Duration: ')
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line = [l for l in lines if keyword in l][0]
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2014-06-25 20:37:06 +00:00
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if 'start:' in line:
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2016-08-24 18:36:56 +00:00
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m = re.search( '(start\\: )' + '-?[0-9]+\\.[0-9]*', line )
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2014-06-25 20:37:06 +00:00
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start_offset = float( line[ m.start() + 7 : m.end() ] )
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2016-08-24 18:36:56 +00:00
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if abs( start_offset ) > 1.0: # once had a file with start offset of 957499 seconds jej
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start_offset = 0
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else:
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start_offset = 0
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2014-06-25 20:37:06 +00:00
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2014-06-18 21:53:48 +00:00
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match = re.search("[0-9][0-9]:[0-9][0-9]:[0-9][0-9].[0-9][0-9]", line)
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hms = map(float, line[match.start()+1:match.end()].split(':'))
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if len(hms) == 1:
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result['duration'] = hms[0]
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elif len(hms) == 2:
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result['duration'] = 60*hms[0]+hms[1]
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elif len(hms) ==3:
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result['duration'] = 3600*hms[0]+60*hms[1]+hms[2]
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2014-06-25 20:37:06 +00:00
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result[ 'duration' ] -= start_offset
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2014-06-18 21:53:48 +00:00
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except:
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raise IOError("Error reading duration in file %s,"%(filename)+
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"Text parsed: %s"%infos)
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2016-08-17 20:07:22 +00:00
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try:
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( input_line, ) = [ l for l in lines if l.startswith( 'Input #0' ) ]
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# Input #0, matroska, webm, from 'm.mkv':
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text = input_line[10:]
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mime_text = text.split( ', from' )[0]
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result[ 'mime_text' ] = mime_text
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except:
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pass
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2017-05-31 21:50:53 +00:00
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if count_frames_manually:
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frame_lines = [ l for l in lines if l.startswith( 'frame= ' ) ]
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if len( frame_lines ) > 0:
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2017-06-07 22:05:15 +00:00
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l = frame_lines[-1] # there will be several of these, counting up as the file renders. we hence want the final one
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2017-05-31 21:50:53 +00:00
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|
|
while ' ' in l:
|
|
|
|
|
|
|
|
l = l.replace( ' ', ' ' )
|
|
|
|
|
|
|
|
|
|
|
|
num_frames = int( l.split( ' ' )[1] )
|
|
|
|
|
|
|
|
result[ 'video_nframes' ] = num_frames
|
|
|
|
|
|
|
|
|
|
|
|
|
2014-06-18 21:53:48 +00:00
|
|
|
# get the output line that speaks about video
|
2017-02-01 21:11:17 +00:00
|
|
|
lines_video = [ l for l in lines if ' Video: ' in l and not ( ' Video: png' in l or ' Video: jpg' in l ) ] # mp3 says it has a 'png' video stream
|
2014-06-18 21:53:48 +00:00
|
|
|
|
|
|
|
result['video_found'] = ( lines_video != [] )
|
|
|
|
|
|
|
|
if result['video_found']:
|
|
|
|
|
|
|
|
line = lines_video[0]
|
|
|
|
|
|
|
|
# get the size, of the form 460x320 (w x h)
|
|
|
|
match = re.search(" [0-9]*x[0-9]*(,| )", line)
|
|
|
|
s = list(map(int, line[match.start():match.end()-1].split('x')))
|
|
|
|
result['video_size'] = s
|
2014-06-25 20:37:06 +00:00
|
|
|
|
2017-05-31 21:50:53 +00:00
|
|
|
have_to_fetch_manually = False
|
2014-06-25 20:37:06 +00:00
|
|
|
|
2017-05-31 21:50:53 +00:00
|
|
|
if 'video_nframes' in result:
|
|
|
|
|
|
|
|
result[ 'video_fps' ] = result[ 'video_nframes' ] / result[ 'duration' ]
|
|
|
|
|
|
|
|
else:
|
|
|
|
|
|
|
|
# get the frame rate
|
|
|
|
try:
|
|
|
|
|
|
|
|
match = re.search("( [0-9]*.| )[0-9]* tbr", line)
|
|
|
|
|
|
|
|
fps = line[match.start():match.end()].split(' ')[1]
|
|
|
|
|
|
|
|
if fps.endswith( 'k' ):
|
|
|
|
|
|
|
|
raise Exception()
|
|
|
|
|
|
|
|
|
|
|
|
result['video_fps'] = float( fps )
|
|
|
|
|
|
|
|
except:
|
|
|
|
|
|
|
|
match = re.search("( [0-9]*.| )[0-9]* fps", line)
|
|
|
|
|
|
|
|
fps = line[match.start():match.end()].split(' ')[1]
|
|
|
|
|
2017-06-07 22:05:15 +00:00
|
|
|
if fps.endswith( 'k' ) or float( fps ) > 60:
|
2017-05-31 21:50:53 +00:00
|
|
|
|
|
|
|
if not doing_manual_frame_count:
|
|
|
|
|
|
|
|
return Hydrusffmpeg_parse_infos( filename, count_frames_manually = True )
|
|
|
|
|
|
|
|
else:
|
|
|
|
|
|
|
|
raise Exception( 'Could not determine framerate!' )
|
|
|
|
|
|
|
|
|
|
|
|
else:
|
|
|
|
|
|
|
|
result['video_fps'] = float( fps )
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
num_frames = result['duration'] * result['video_fps']
|
|
|
|
|
|
|
|
if num_frames != int( num_frames ): num_frames += 1 # rounding up
|
|
|
|
|
|
|
|
result['video_nframes'] = int( num_frames )
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
|
2014-06-18 21:53:48 +00:00
|
|
|
result['video_duration'] = result['duration']
|
|
|
|
# We could have also recomputed the duration from the number
|
|
|
|
# of frames, as follows:
|
|
|
|
# >>> result['video_duration'] = result['video_nframes'] / result['video_fps']
|
|
|
|
|
|
|
|
|
|
|
|
lines_audio = [l for l in lines if ' Audio: ' in l]
|
|
|
|
|
|
|
|
result['audio_found'] = lines_audio != []
|
|
|
|
|
|
|
|
if result['audio_found']:
|
|
|
|
line = lines_audio[0]
|
|
|
|
try:
|
|
|
|
match = re.search(" [0-9]* Hz", line)
|
|
|
|
result['audio_fps'] = int(line[match.start()+1:match.end()])
|
|
|
|
except:
|
|
|
|
result['audio_fps'] = 'unknown'
|
|
|
|
|
|
|
|
return result
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
# This was built from moviepy's FFMPEG_VideoReader
|
|
|
|
class VideoRendererFFMPEG( object ):
|
2015-11-18 22:44:07 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
def __init__( self, path, mime, duration, num_frames, target_resolution, pix_fmt = "rgb24" ):
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self._path = path
|
|
|
|
self._mime = mime
|
|
|
|
self._duration = float( duration ) / 1000.0
|
|
|
|
self._num_frames = num_frames
|
2014-05-28 21:03:24 +00:00
|
|
|
self._target_resolution = target_resolution
|
|
|
|
|
2015-03-04 22:44:32 +00:00
|
|
|
self.lastread = None
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.fps = float( self._num_frames ) / self._duration
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2016-07-06 21:13:15 +00:00
|
|
|
if self.fps == 0:
|
|
|
|
|
|
|
|
self.fps = 24
|
|
|
|
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.pix_fmt = pix_fmt
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
if pix_fmt == 'rgba': self.depth = 4
|
|
|
|
else: self.depth = 3
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
( x, y ) = self._target_resolution
|
2015-11-25 22:00:57 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
bufsize = self.depth * x * y
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.process = None
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.bufsize = bufsize
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.initialize()
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
|
|
|
|
def __del__( self ):
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.close()
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
|
|
|
|
def close(self):
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
if self.process is not None:
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.process.terminate()
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.process.stdout.close()
|
|
|
|
self.process.stderr.close()
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.process = None
|
2014-05-28 21:03:24 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
def initialize( self, start_index = 0 ):
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.close()
|
|
|
|
|
|
|
|
if self._mime == HC.IMAGE_GIF:
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
ss = 0
|
|
|
|
self.pos = 0
|
|
|
|
skip_frames = start_index
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
else:
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
ss = float( start_index ) / self.fps
|
|
|
|
self.pos = start_index
|
|
|
|
skip_frames = 0
|
2014-05-28 21:03:24 +00:00
|
|
|
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
( w, h ) = self._target_resolution
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2015-06-17 20:01:41 +00:00
|
|
|
cmd = [ FFMPEG_PATH,
|
2014-06-25 20:37:06 +00:00
|
|
|
'-ss', "%.03f" % ss,
|
2015-06-17 20:01:41 +00:00
|
|
|
'-i', self._path,
|
2014-06-25 20:37:06 +00:00
|
|
|
'-loglevel', 'quiet',
|
|
|
|
'-f', 'image2pipe',
|
|
|
|
"-pix_fmt", self.pix_fmt,
|
|
|
|
"-s", str( w ) + 'x' + str( h ),
|
2017-05-31 21:50:53 +00:00
|
|
|
'-vsync', '0',
|
2015-06-17 20:01:41 +00:00
|
|
|
'-vcodec', 'rawvideo', '-' ]
|
|
|
|
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2016-12-07 22:12:52 +00:00
|
|
|
try:
|
|
|
|
|
2017-06-07 22:05:15 +00:00
|
|
|
self.process = subprocess.Popen( cmd, bufsize = self.bufsize, stdout=subprocess.PIPE, stderr=subprocess.PIPE, startupinfo = HydrusData.GetHideTerminalSubprocessStartupInfo() )
|
2016-12-07 22:12:52 +00:00
|
|
|
|
|
|
|
except:
|
|
|
|
|
|
|
|
if not os.path.exists( FFMPEG_PATH ):
|
|
|
|
|
|
|
|
raise Exception( 'FFMPEG was not found!' )
|
|
|
|
|
|
|
|
else:
|
|
|
|
|
|
|
|
raise
|
|
|
|
|
|
|
|
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2016-07-27 21:53:34 +00:00
|
|
|
if skip_frames > 0:
|
|
|
|
|
|
|
|
self.skip_frames( skip_frames )
|
|
|
|
|
2014-05-28 21:03:24 +00:00
|
|
|
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
def skip_frames( self, n ):
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
( w, h ) = self._target_resolution
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
for i in range( n ):
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2015-09-09 22:04:39 +00:00
|
|
|
if self.process is not None:
|
|
|
|
|
|
|
|
self.process.stdout.read( self.depth * w * h )
|
|
|
|
|
|
|
|
self.process.stdout.flush()
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
|
|
|
|
self.pos += 1
|
2014-05-28 21:03:24 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
def read_frame( self ):
|
|
|
|
|
2016-07-20 19:57:10 +00:00
|
|
|
if self.pos == self._num_frames:
|
|
|
|
|
|
|
|
self.initialize()
|
|
|
|
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2016-07-06 21:13:15 +00:00
|
|
|
if self.process is None:
|
|
|
|
|
|
|
|
result = self.lastread
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
else:
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
( w, h ) = self._target_resolution
|
|
|
|
|
|
|
|
nbytes = self.depth * w * h
|
|
|
|
|
|
|
|
s = self.process.stdout.read(nbytes)
|
|
|
|
|
|
|
|
if len(s) != nbytes:
|
|
|
|
|
|
|
|
result = self.lastread
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
self.close()
|
2014-05-28 21:03:24 +00:00
|
|
|
|
|
|
|
else:
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
result = numpy.fromstring( s, dtype = 'uint8' ).reshape( ( h, w, len( s ) // ( w * h ) ) )
|
|
|
|
|
|
|
|
self.lastread = result
|
2014-05-28 21:03:24 +00:00
|
|
|
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
|
|
|
|
self.pos += 1
|
|
|
|
|
|
|
|
return result
|
2014-05-28 21:03:24 +00:00
|
|
|
|
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
def set_position( self, pos ):
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2014-06-25 20:37:06 +00:00
|
|
|
rewind = pos < self.pos
|
|
|
|
jump_a_long_way_ahead = pos > self.pos + 60
|
|
|
|
|
|
|
|
if rewind or jump_a_long_way_ahead: self.initialize( pos )
|
|
|
|
else: self.skip_frames( pos - self.pos )
|
2014-05-28 21:03:24 +00:00
|
|
|
|
2016-12-07 22:12:52 +00:00
|
|
|
|