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window_source.py
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window_source.py
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# -*- coding: utf-8 -*-
# This file is part of Xpra.
# Copyright (C) 2011 Serviware (Arthur Huillet, <ahuillet@serviware.com>)
# Copyright (C) 2010-2021 Antoine Martin <antoine@xpra.org>
# Copyright (C) 2008 Nathaniel Smith <njs@pobox.com>
# Xpra is released under the terms of the GNU GPL v2, or, at your option, any
# later version. See the file COPYING for details.
import os
import hashlib
import threading
from math import sqrt
from collections import deque
from time import monotonic
from xpra.os_util import strtobytes, bytestostr
from xpra.util import envint, envbool, csv, typedict, first_time, decode_str
from xpra.common import MAX_WINDOW_SIZE
from xpra.server.window.windowicon_source import WindowIconSource
from xpra.server.window.window_stats import WindowPerformanceStatistics
from xpra.server.window.batch_delay_calculator import calculate_batch_delay, get_target_speed, get_target_quality
from xpra.server.cystats import time_weighted_average, logp #@UnresolvedImport
from xpra.rectangle import rectangle, add_rectangle, remove_rectangle, merge_all #@UnresolvedImport
from xpra.server.picture_encode import rgb_encode, webp_encode, mmap_send
from xpra.simple_stats import get_list_stats
from xpra.codecs.argb.argb import argb_swap #@UnresolvedImport
from xpra.codecs.rgb_transform import rgb_reformat
from xpra.codecs.loader import get_codec
from xpra.codecs.codec_constants import PREFERRED_ENCODING_ORDER, LOSSY_PIXEL_FORMATS
from xpra.net.compression import use, Compressed
from xpra.log import Logger
log = Logger("window", "encoding")
refreshlog = Logger("window", "refresh")
compresslog = Logger("window", "compress")
damagelog = Logger("window", "damage")
scalinglog = Logger("scaling")
iconlog = Logger("icon")
avsynclog = Logger("av-sync")
statslog = Logger("stats")
bandwidthlog = Logger("bandwidth")
AUTO_REFRESH = envbool("XPRA_AUTO_REFRESH", True)
AUTO_REFRESH_QUALITY = envint("XPRA_AUTO_REFRESH_QUALITY", 100)
AUTO_REFRESH_SPEED = envint("XPRA_AUTO_REFRESH_SPEED", 50)
INITIAL_QUALITY = envint("XPRA_INITIAL_QUALITY", 65)
INITIAL_SPEED = envint("XPRA_INITIAL_SPEED", 40)
LOCKED_BATCH_DELAY = envint("XPRA_LOCKED_BATCH_DELAY", 1000)
MAX_PIXELS_PREFER_RGB = envint("XPRA_MAX_PIXELS_PREFER_RGB", 4096)
MAX_RGB = envint("XPRA_MAX_RGB", 512*1024)
MIN_WINDOW_REGION_SIZE = envint("XPRA_MIN_WINDOW_REGION_SIZE", 1024)
MAX_SOFT_EXPIRED = envint("XPRA_MAX_SOFT_EXPIRED", 5)
ACK_JITTER = envint("XPRA_ACK_JITTER", 100)
ACK_TOLERANCE = envint("XPRA_ACK_TOLERANCE", 250)
SLOW_SEND_THRESHOLD = envint("XPRA_SLOW_SEND_THRESHOLD", 20*1000*1000)
HAS_ALPHA = envbool("XPRA_ALPHA", True)
FORCE_BATCH = envint("XPRA_FORCE_BATCH", True)
STRICT_MODE = envint("XPRA_ENCODING_STRICT_MODE", False)
MERGE_REGIONS = envbool("XPRA_MERGE_REGIONS", True)
DOWNSCALE = envbool("XPRA_DOWNSCALE", True)
DOWNSCALE_THRESHOLD = envint("XPRA_DOWNSCALE_THRESHOLD", 20)
INTEGRITY_HASH = envint("XPRA_INTEGRITY_HASH", False)
MAX_SYNC_BUFFER_SIZE = envint("XPRA_MAX_SYNC_BUFFER_SIZE", 256)*1024*1024 #256MB
AV_SYNC_RATE_CHANGE = envint("XPRA_AV_SYNC_RATE_CHANGE", 20)
AV_SYNC_TIME_CHANGE = envint("XPRA_AV_SYNC_TIME_CHANGE", 500)
SEND_TIMESTAMPS = envbool("XPRA_SEND_TIMESTAMPS", False)
DAMAGE_STATISTICS = envbool("XPRA_DAMAGE_STATISTICS", False)
SCROLL_ALL = envbool("XPRA_SCROLL_ALL", True)
HARDCODED_ENCODING = os.environ.get("XPRA_HARDCODED_ENCODING")
INFINITY = float("inf")
def get_env_encodings(etype, valid_options=()):
v = os.environ.get("XPRA_%s_ENCODINGS" % etype)
encodings = valid_options
if v:
options = v.split(",")
encodings = tuple(x for x in options if x in valid_options)
log("%s encodings: %s", etype, encodings)
return encodings
TRANSPARENCY_ENCODINGS = get_env_encodings("TRANSPARENCY", ("webp", "png", "rgb32"))
LOSSLESS_ENCODINGS = get_env_encodings("LOSSLESS", ("rgb", "png", "png/P", "png/L"))
REFRESH_ENCODINGS = get_env_encodings("REFRESH", ("webp", "png", "rgb24", "rgb32"))
LOSSLESS_WINDOW_TYPES = set(os.environ.get("XPRA_LOSSLESS_WINDOW_TYPES",
"DOCK,TOOLBAR,MENU,UTILITY,DROPDOWN_MENU,POPUP_MENU,TOOLTIP,NOTIFICATION,COMBO,DND").split(","))
class DelayedRegions:
def __init__(self, damage_time, regions, encoding, options):
self.expired = False
self.damage_time = damage_time
self.regions = regions
self.encoding = encoding
self.options = options or {}
def __repr__(self):
return "DelayedRegion(time=%i, expired=%s, encoding=%s, %i regions, options=%s)" % (
self.damage_time, self.expired, self.encoding, len(self.regions), self.options
)
def capr(v):
return min(100, max(0, int(v)))
class WindowSource(WindowIconSource):
"""
We create a Window Source for each window we send pixels for.
The UI thread calls 'damage' for screen updates,
we eventually call 'ClientConnection.call_in_encode_thread' to queue the damage compression,
the function can then submit the packet using the 'queue_damage_packet' callback.
(also by 'send_window_icon' and clibpoard packets)
"""
_encoding_warnings = set()
def __init__(self,
idle_add, timeout_add, source_remove,
ww, wh,
record_congestion_event, queue_size, call_in_encode_thread, queue_packet,
statistics,
wid, window, batch_config, auto_refresh_delay,
av_sync, av_sync_delay,
video_helper,
cuda_device_context,
server_core_encodings, server_encodings,
encoding, encodings, core_encodings, window_icon_encodings,
encoding_options, icons_encoding_options,
rgb_formats,
default_encoding_options,
mmap, mmap_size, bandwidth_limit, jitter):
super().__init__(window_icon_encodings, icons_encoding_options)
self.idle_add = idle_add
self.timeout_add = timeout_add
self.source_remove = source_remove
# mmap:
self._mmap = mmap
self._mmap_size = mmap_size
self.init_vars()
self.start_time = monotonic()
self.ui_thread = threading.current_thread()
self.record_congestion_event = record_congestion_event #callback for send latency problems
self.queue_size = queue_size #callback to get the size of the damage queue
self.call_in_encode_thread = call_in_encode_thread #callback to add damage data which is ready to compress to the damage processing queue
self.queue_packet = queue_packet #callback to add a network packet to the outgoing queue
self.wid = wid
self.window = window #only to be used from the UI thread!
self.global_statistics = statistics #shared/global statistics from ClientConnection
self.statistics = WindowPerformanceStatistics()
self.av_sync = av_sync #flag: enabled or not?
self.av_sync_delay = av_sync_delay #the av-sync delay we actually use
self.av_sync_delay_target = av_sync_delay #the av-sync delay we want at this point in time (can vary quickly)
self.av_sync_delay_base = av_sync_delay #the total av-sync delay we are trying to achieve (including video encoder delay)
self.av_sync_frame_delay = 0 #how long frames spend in the video encoder
self.av_sync_timer = None
self.encode_queue = []
self.encode_queue_max_size = 10
self.server_core_encodings = server_core_encodings
self.server_encodings = server_encodings
self.encoding = encoding #the current encoding
self.encodings = encodings #all the encodings supported by the client
self.core_encodings = core_encodings #the core encodings supported by the client
self.rgb_formats = rgb_formats #supported RGB formats (RGB, RGBA, ...) - used by mmap
self.encoding_options = encoding_options #extra options which may be specific to the encoder (ie: x264)
self.rgb_zlib = use("zlib") and encoding_options.boolget("rgb_zlib", True) #server and client support zlib pixel compression
self.rgb_lz4 = use("lz4") and encoding_options.boolget("rgb_lz4", False) #server and client support lz4 pixel compression
self.client_render_size = encoding_options.get("render-size")
self.client_bit_depth = encoding_options.intget("bit-depth", 24)
self.supports_transparency = HAS_ALPHA and encoding_options.boolget("transparency")
self.full_frames_only = self.is_tray or encoding_options.boolget("full_frames_only")
self.client_refresh_encodings = encoding_options.strtupleget("auto_refresh_encodings")
self.max_soft_expired = max(0, min(100, encoding_options.intget("max-soft-expired", MAX_SOFT_EXPIRED)))
self.send_timetamps = encoding_options.boolget("send-timestamps", SEND_TIMESTAMPS)
self.send_window_size = encoding_options.boolget("send-window-size", False)
self.decoder_speed = typedict(self.encoding_options.dictget("decoder-speed") or {})
self.batch_config = batch_config
#auto-refresh:
self.auto_refresh_delay = auto_refresh_delay
self.base_auto_refresh_delay = auto_refresh_delay
self.last_auto_refresh_message = None
self.video_helper = video_helper
self.cuda_device_context = cuda_device_context
self.is_idle = False
self.is_OR = window.is_OR()
self.is_tray = window.is_tray()
self.is_shadow = window.is_shadow()
self.has_alpha = window.has_alpha()
self.window_dimensions = ww, wh
#where the window is mapped on the client:
self.mapped_at = None
self.fullscreen = not self.is_tray and window.get("fullscreen")
if default_encoding_options.get("scaling.control") is None:
self.scaling_control = None #means "auto"
else:
#ClientConnection sets defaults with the client's scaling.control value
self.scaling_control = default_encoding_options.intget("scaling.control", 1)
self.scaling = None
self.maximized = False #set by the client!
self.iconic = False
self.content_type = ""
self.window_signal_handlers = []
#watch for changes to properties that are used to derive the content-type:
if "content-type" in window.get_dynamic_property_names():
sid = window.connect("notify::content-type", self.content_type_changed)
self.window_signal_handlers.append(sid)
self.content_type_changed(window)
if "iconic" in window.get_dynamic_property_names():
self.iconic = window.get_property("iconic")
sid = window.connect("notify::iconic", self._iconic_changed)
self.window_signal_handlers.append(sid)
if "fullscreen" in window.get_dynamic_property_names():
sid = window.connect("notify::fullscreen", self._fullscreen_changed)
self.window_signal_handlers.append(sid)
if "children" in window.get_internal_property_names():
#we just copy the value to an attribute of window-source,
#so that we can access it from any thread
def children_updated(*_args):
self.children = window.get_property("children")
sid = window.connect("notify::children", children_updated)
self.window_signal_handlers.append(sid)
children_updated()
else:
self.children = None
#for deciding between small regions and full screen updates:
self.max_small_regions = 40
self.max_bytes_percent = 60
self.small_packet_cost = 1024
if mmap and mmap_size>0:
#with mmap, we can move lots of data around easily
#so favour large screen updates over small packets
self.max_small_regions = 10
self.max_bytes_percent = 25
self.small_packet_cost = 4096
self.bandwidth_limit = bandwidth_limit
self.jitter = jitter
self.pixel_format = None #ie: BGRX
self.image_depth = window.get_property("depth")
# general encoding tunables (mostly used by video encoders):
#keep track of the target encoding_quality: (event time, info, encoding speed):
self._encoding_quality = deque(maxlen=100)
self._encoding_quality_info = {}
#keep track of the target encoding_speed: (event time, info, encoding speed):
self._encoding_speed = deque(maxlen=100)
self._encoding_speed_info = {}
# they may have fixed values:
self._fixed_quality = default_encoding_options.get("quality", -1)
self._fixed_min_quality = capr(default_encoding_options.get("min-quality", 0))
self._fixed_speed = default_encoding_options.get("speed", -1)
self._fixed_min_speed = capr(default_encoding_options.get("min-speed", 0))
self._encoding_hint = None
self._quality_hint = self.window.get("quality", -1)
dyn_props = window.get_dynamic_property_names()
if "quality" in dyn_props:
sid = window.connect("notify::quality", self.quality_changed)
self.window_signal_handlers.append(sid)
self._speed_hint = self.window.get("speed", -1)
if "speed" in dyn_props:
sid = window.connect("notify::speed", self.speed_changed)
self.window_signal_handlers.append(sid)
if "encoding" in dyn_props:
sid = window.connect("notify::encoding", self.encoding_changed)
self.window_signal_handlers.append(sid)
self.window_type = set()
if "window-type" in dyn_props:
self.window_type = set(self.window.get_property("window-type"))
sid = window.connect("notify::window-type", self.window_type_changed)
self.window_signal_handlers.append(sid)
self._opaque_region = self.window.get("opaque-region", ())
if "opaque-region" in dyn_props:
sid = window.connect("notify::opaque-region", self.window_opaque_region_changed)
self.window_signal_handlers.append(sid)
#will be overriden by update_quality() and update_speed() called from update_encoding_selection()
#just here for clarity:
nobwl = (self.bandwidth_limit or 0)<=0
if self._quality_hint>=0:
self._current_quality = capr(self._quality_hint)
elif self._fixed_quality>=0:
self._current_quality = capr(self._fixed_quality)
else:
self._current_quality = capr(encoding_options.intget("initial_quality", INITIAL_QUALITY*(1+int(nobwl))))
if self._speed_hint>=0:
self._current_speed = capr(self._speed_hint)
elif self._fixed_speed>=0:
self._current_speed = capr(self._fixed_speed)
else:
self._current_speed = capr(encoding_options.intget("initial_speed", INITIAL_SPEED*(1+int(nobwl))))
self._want_alpha = False
self._lossless_threshold_base = 85
self._lossless_threshold_pixel_boost = 20
self._rgb_auto_threshold = MAX_PIXELS_PREFER_RGB
self.init_encoders()
self.update_encoding_selection(encoding, init=True)
log("initial encoding for %s: %s", self.wid, self.encoding)
#ready to service:
self._damage_cancelled = 0
def __repr__(self):
return "WindowSource(%s : %s)" % (self.wid, self.window_dimensions)
def add_encoder(self, encoding, encoder):
log("add_encoder(%s, %s)", encoding, encoder)
self._all_encoders.setdefault(encoding, []).insert(0, encoder)
self._encoders[encoding] = encoder
def init_encoders(self):
self._all_encoders = {}
self._encoders = {}
self.full_csc_modes = typedict()
self.add_encoder("rgb24", self.rgb_encode)
self.add_encoder("rgb32", self.rgb_encode)
#we need pillow for scaling and grayscale:
self.enc_pillow = get_codec("enc_pillow")
if self._mmap_size>0:
self.add_encoder("mmap", self.mmap_encode)
return
if self.enc_pillow:
for x in self.enc_pillow.get_encodings():
if x in self.server_core_encodings:
self.add_encoder(x, self.pillow_encode)
#prefer these native encoders over the Pillow version:
if "webp" in self.server_core_encodings:
self.add_encoder("webp", self.webp_encode)
self.enc_jpeg = get_codec("enc_jpeg")
if "jpeg" in self.server_core_encodings and self.enc_jpeg:
self.add_encoder("jpeg", self.jpeg_encode)
#prefer nvjpeg over all the other jpeg encoders:
self.enc_nvjpeg = None
log("init_encoders() cuda_device_context=%s", self.cuda_device_context)
if self.cuda_device_context:
self.enc_nvjpeg = get_codec("enc_nvjpeg")
if self.enc_nvjpeg:
self.add_encoder("jpeg", self.nvjpeg_encode)
self.parse_csc_modes(self.encoding_options.dictget("full_csc_modes", default=None))
def init_vars(self):
self.server_core_encodings = ()
self.server_encodings = ()
self.encoding = None
self.encodings = ()
self.encoding_last_used = None
self.auto_refresh_encodings = ()
self.core_encodings = ()
self.rgb_formats = ()
self.full_csc_modes = typedict()
self.client_refresh_encodings = ()
self.encoding_options = {}
self.rgb_zlib = False
self.rgb_lz4 = False
self.supports_transparency = False
self.full_frames_only = False
self.suspended = False
self.strict = STRICT_MODE
self.decoder_speed = typedict()
#
self.decode_error_refresh_timer = None
self.may_send_timer = None
self.auto_refresh_delay = 0
self.base_auto_refresh_delay = 0
self.min_auto_refresh_delay = 50
self.video_helper = None
self.refresh_quality = AUTO_REFRESH_QUALITY
self.refresh_speed = AUTO_REFRESH_SPEED
self.refresh_event_time = 0
self.refresh_target_time = 0
self.refresh_timer = None
self.refresh_regions = []
self.timeout_timer = None
self.expire_timer = None
self.soft_timer = None
self.soft_expired = 0
self.max_soft_expired = MAX_SOFT_EXPIRED
self.is_OR = False
self.is_tray = False
self.is_shadow = False
self.has_alpha = False
self.window_dimensions = 0, 0
self.fullscreen = False
self.scaling_control = None
self.scaling = None
self.maximized = False
#
self.bandwidth_limit = 0
self.max_small_regions = 0
self.max_bytes_percent = 0
self.small_packet_cost = 0
#
self._encoding_quality = []
self._encoding_quality_info = {}
self._encoding_speed = []
self._encoding_speed_info = {}
#
self._fixed_quality = -1
self._fixed_min_quality = 0
self._fixed_speed = -1
self._fixed_min_speed = 0
#
self._damage_delayed = None
self._sequence = 1
self._damage_cancelled = INFINITY
self._damage_packet_sequence = 1
def cleanup(self):
self.cancel_damage(INFINITY)
log("encoding_totals for wid=%s with primary encoding=%s : %s",
self.wid, self.encoding, self.statistics.encoding_totals)
self.init_vars()
self._mmap_size = 0
self.batch_config.cleanup()
#we can only clear the encoders after clearing the whole encoding queue:
#(because mmap cannot be cancelled once queued for encoding)
self.call_in_encode_thread(False, self.encode_ended)
def encode_ended(self):
log("encode_ended()")
self._encoders = {}
self.idle_add(self.ui_cleanup)
def ui_cleanup(self):
log("ui_cleanup: will disconnect %s", self.window_signal_handlers)
for sid in self.window_signal_handlers:
self.window.disconnect(sid)
self.window_signal_handlers = []
self.window = None
self.batch_config = None
self.get_best_encoding = None
self.statistics = None
self.global_statistics = None
def get_info(self) -> dict:
#should get prefixed with "client[M].window[N]." by caller
"""
Add window specific stats
"""
info = self.statistics.get_info()
info.update(super().get_info())
einfo = info.setdefault("encoding", {}) #defined in statistics.get_info()
einfo.update(self.get_quality_speed_info())
einfo.update({
"" : self.encoding,
"lossless_threshold" : {
"base" : self._lossless_threshold_base,
"pixel_boost" : self._lossless_threshold_pixel_boost
},
})
try:
#ie: get_strict_encoding -> "strict_encoding"
einfo["selection"] = self.get_best_encoding.__name__.replace("get_", "")
except AttributeError:
pass
#"encodings" info:
esinfo = {
"" : self.encodings,
"core" : self.core_encodings,
"auto-refresh" : self.client_refresh_encodings,
"csc_modes" : self.full_csc_modes or {},
"decoder-speed" : dict(self.decoder_speed),
}
larm = self.last_auto_refresh_message
if larm:
esinfo.update({"auto-refresh" : {
"quality" : self.refresh_quality,
"speed" : self.refresh_speed,
"min-delay" : self.min_auto_refresh_delay,
"delay" : self.auto_refresh_delay,
"base-delay" : self.base_auto_refresh_delay,
"last-event" : {
"elapsed" : int(1000*(monotonic()-larm[0])),
"message" : larm[1],
}
}
})
#remove large default dict:
info.update({
"idle" : self.is_idle,
"dimensions" : self.window_dimensions,
"suspended" : self.suspended or False,
"bandwidth-limit" : self.bandwidth_limit,
"av-sync" : {
"enabled" : self.av_sync,
"current" : self.av_sync_delay,
"target" : self.av_sync_delay_target
},
"encodings" : esinfo,
"rgb_threshold" : self._rgb_auto_threshold,
"mmap" : self._mmap_size>0,
"last_used" : self.encoding_last_used or "",
"full-frames-only" : self.full_frames_only,
"supports-transparency" : self.supports_transparency,
"property" : self.get_property_info(),
"content-type" : self.content_type or "",
"batch" : self.batch_config.get_info(),
"soft-timeout" : {
"expired" : self.soft_expired,
"max" : self.max_soft_expired,
},
"send-timetamps" : self.send_timetamps,
"send-window-size" : self.send_window_size,
"rgb_formats" : self.rgb_formats,
"bit-depth" : {
"source" : self.image_depth,
"client" : self.client_bit_depth,
},
})
ma = self.mapped_at
if ma:
info["mapped-at"] = ma
crs = self.client_render_size
if crs:
info["render-size"] = crs
info["damage.fps"] = int(self.get_damage_fps())
if self.pixel_format:
info["pixel-format"] = self.pixel_format
cdd = self.cuda_device_context
if cdd:
info["cuda-device"] = cdd.get_info()
return info
def get_damage_fps(self):
now = monotonic()
cutoff = now-5
lde = tuple(x[0] for x in tuple(self.statistics.last_damage_events) if x[0]>=cutoff)
fps = 0
if len(lde)>=2:
elapsed = now-min(lde)
if elapsed>0:
fps = len(lde) // elapsed
return fps
def get_quality_speed_info(self) -> dict:
info = {}
def add_list_info(prefix, v, vinfo):
if not v:
return
l = tuple(v)
if not l:
li = {}
else:
li = get_list_stats(x for _, x in l)
li.update(vinfo)
info[prefix] = li
add_list_info("quality", self._encoding_quality, self._encoding_quality_info)
add_list_info("speed", self._encoding_speed, self._encoding_speed_info)
return info
def get_property_info(self) -> dict:
return {
"fullscreen" : self.fullscreen or False,
#speed / quality properties (not necessarily the same as the video encoder settings..):
"encoding-hint" : self._encoding_hint or "",
"min_speed" : self._fixed_min_speed,
"speed" : self._fixed_speed,
"speed-hint" : self._speed_hint,
"min_quality" : self._fixed_min_quality,
"quality" : self._fixed_quality,
"quality-hint" : self._quality_hint,
}
def go_idle(self):
self.is_idle = True
self.lock_batch_delay(LOCKED_BATCH_DELAY)
def no_idle(self):
self.is_idle = False
self.unlock_batch_delay()
def lock_batch_delay(self, delay):
""" use a fixed delay until unlock_batch_delay is called """
if not self.batch_config.locked:
self.batch_config.locked = True
self.batch_config.saved = self.batch_config.delay
self.batch_config.delay = max(delay, self.batch_config.delay)
def unlock_batch_delay(self):
if self.iconic or not self.batch_config.locked:
return
self.batch_config.locked = False
self.batch_config.delay = self.batch_config.saved
def suspend(self):
self.cancel_damage()
self.statistics.reset()
self.suspended = True
def resume(self):
assert self.ui_thread == threading.current_thread()
self.cancel_damage()
self.statistics.reset()
self.suspended = False
self.refresh({"quality" : 100})
if not self.is_OR and not self.is_tray and "icons" in self.window.get_property_names():
self.send_window_icon()
def refresh(self, options=None):
assert self.ui_thread == threading.current_thread()
w, h = self.window.get_dimensions()
self.damage(0, 0, w, h, options)
def set_scaling(self, scaling):
scalinglog("set_scaling(%s)", scaling)
self.scaling = scaling
self.reconfigure(True)
def set_scaling_control(self, scaling_control):
scalinglog("set_scaling_control(%s)", scaling_control)
if scaling_control is None:
self.scaling_control = None
else:
self.scaling_control = max(0, min(100, scaling_control))
self.reconfigure(True)
def _fullscreen_changed(self, _window, *_args):
self.fullscreen = self.window.get_property("fullscreen")
log("window fullscreen state changed: %s", self.fullscreen)
self.reconfigure(True)
def _iconic_changed(self, _window, *_args):
self.iconic = self.window.get_property("iconic")
if self.iconic:
self.go_idle()
else:
self.no_idle()
def content_type_changed(self, window, *args):
self.content_type = window.get("content-type")
log("content_type_changed(%s, %s) content-type=%s", window, args, self.content_type)
return True
def quality_changed(self, window, *args):
self._quality_hint = window.get("quality", -1)
log("quality_changed(%s, %s) quality=%s", window, args, self._quality_hint)
return True
def speed_changed(self, window, *args):
self._speed_hint = window.get("speed", -1)
log("speed_changed(%s, %s) speed=%s", window, args, self._speed_hint)
return True
def encoding_changed(self, window, *args):
v = window.get("encoding", None)
if v and v not in self._encoders:
log.warn("Warning: invalid encoding hint '%s'", v)
log.warn(" this encoding is not supported")
v = None
self._encoding_hint = v
self.assign_encoding_getter()
log("encoding_changed(%s, %s) encoding-hint=%s, selection=%s",
window, args, self._encoding_hint, self.get_best_encoding)
return True
def window_type_changed(self, window, *args):
self.window_type = set(window.get_property("window-type"))
log("window_type_changed(window, %s) window_type=%s", window, args, self.window_type)
self.assign_encoding_getter()
def window_opaque_region_changed(self, window, *args):
self._opaque_region = window.get_property("opaque-region") or ()
log("window_opaque_region_changed(window, %s) opaque-region=%s", window, args, self._opaque_region)
self.update_encoding_options()
def set_client_properties(self, properties):
#filter out stuff we don't care about
#to see if there is anything to set at all,
#and if not, don't bother doing the potentially expensive update_encoding_selection()
for k in ("workspace", "screen"):
if k in properties:
del properties[k]
elif strtobytes(k) in properties:
del properties[strtobytes(k)]
if properties:
self.do_set_client_properties(properties)
def do_set_client_properties(self, properties):
self.maximized = properties.boolget("maximized", False)
self.client_render_size = properties.intpair("encoding.render-size")
self.client_bit_depth = properties.intget("bit-depth", self.client_bit_depth)
self.client_refresh_encodings = properties.strtupleget("encoding.auto_refresh_encodings", self.client_refresh_encodings)
self.full_frames_only = self.is_tray or properties.boolget("encoding.full_frames_only", self.full_frames_only)
self.supports_transparency = HAS_ALPHA and properties.boolget("encoding.transparency", self.supports_transparency)
self.encodings = properties.strtupleget("encodings", self.encodings)
self.core_encodings = properties.strtupleget("encodings.core", self.core_encodings)
self.decoder_speed = typedict(properties.dictget("decoder-speed", self.decoder_speed))
rgb_formats = properties.strtupleget("encodings.rgb_formats", self.rgb_formats)
if not self.supports_transparency:
#remove rgb formats with alpha
rgb_formats = tuple(x for x in rgb_formats if x.find("A")<0)
self.rgb_formats = rgb_formats
self.send_window_size = properties.boolget("encoding.send-window-size", self.send_window_size)
self.parse_csc_modes(properties.dictget("encoding.full_csc_modes", default=None))
#select the defaults encoders:
#(in case pillow was selected previously and the client side scaling changed)
for encoding, encoders in self._all_encoders.items():
self._encoders[encoding] = encoders[0]
#we may now want to downscale server-side,
#or convert to grayscale,
#and for that we need to use the pillow encoder:
grayscale = self.encoding=="grayscale"
if self.enc_pillow and ((DOWNSCALE and self.client_render_size) or grayscale):
crsw, crsh = self.client_render_size
ww, wh = self.window_dimensions
if grayscale or (ww-crsw>DOWNSCALE_THRESHOLD and wh-crsh>DOWNSCALE_THRESHOLD):
for x in self.enc_pillow.get_encodings():
if x in self.server_core_encodings:
self.add_encoder(x, self.pillow_encode)
self.update_encoding_selection(self.encoding)
def parse_csc_modes(self, full_csc_modes):
#only override if values are specified:
log("parse_csc_modes(%s) current value=%s", full_csc_modes, self.full_csc_modes)
if full_csc_modes is not None and isinstance(full_csc_modes, dict):
self.full_csc_modes = typedict(full_csc_modes)
def set_auto_refresh_delay(self, d):
self.auto_refresh_delay = d
self.update_refresh_attributes()
def set_av_sync_delay(self, new_delay):
self.av_sync_delay_base = new_delay
self.may_update_av_sync_delay()
def may_update_av_sync_delay(self):
#set the target then schedule a timer to gradually
#get the actual value "av_sync_delay" moved towards it
self.av_sync_delay_target = max(0, self.av_sync_delay_base - self.av_sync_frame_delay)
avsynclog("may_update_av_sync_delay() target=%s from base=%s, frame-delay=%s",
self.av_sync_delay_target, self.av_sync_delay_base, self.av_sync_frame_delay)
self.schedule_av_sync_update()
def schedule_av_sync_update(self, delay=0):
avsynclog("schedule_av_sync_update(%i) wid=%i, delay=%i, target=%i, timer=%s",
delay, self.wid, self.av_sync_delay, self.av_sync_delay_target, self.av_sync_timer)
if not self.av_sync:
self.av_sync_delay = 0
return
if self.av_sync_delay==self.av_sync_delay_target:
return #already up to date
if self.av_sync_timer:
return #already scheduled
self.av_sync_timer = self.timeout_add(delay, self.update_av_sync_delay)
def update_av_sync_delay(self):
self.av_sync_timer = None
delta = self.av_sync_delay_target-self.av_sync_delay
if delta==0:
return
#limit the rate of change:
rdelta = min(AV_SYNC_RATE_CHANGE, max(-AV_SYNC_RATE_CHANGE, delta))
avsynclog("update_av_sync_delay() wid=%i, current=%s, target=%s, adding %s (capped to +-%s from %s)",
self.wid, self.av_sync_delay, self.av_sync_delay_target, rdelta, AV_SYNC_RATE_CHANGE, delta)
self.av_sync_delay += rdelta
if self.av_sync_delay!=self.av_sync_delay_target:
self.schedule_av_sync_update(AV_SYNC_TIME_CHANGE)
def set_new_encoding(self, encoding, strict):
if strict is not None or STRICT_MODE:
self.strict = strict or STRICT_MODE
if self.encoding==encoding:
return
self.statistics.reset()
self.update_encoding_selection(encoding)
def update_encoding_selection(self, encoding=None, exclude=(), init=False):
#now we have the real list of encodings we can use:
#"rgb32" and "rgb24" encodings are both aliased to "rgb"
if self._mmap_size>0 and self.encoding!="grayscale":
self.auto_refresh_encodings = ()
self.encoding = "mmap"
self.encodings = ("mmap", )
self.common_encodings = ("mmap", )
self.get_best_encoding = self.encoding_is_mmap
return
common_encodings = [x for x in self._encoders if x in self.core_encodings and x not in exclude]
#"rgb" is a pseudo encoding and needs special code:
if "rgb24" in common_encodings or "rgb32" in common_encodings:
common_encodings.append("rgb")
self.common_encodings = tuple(x for x in PREFERRED_ENCODING_ORDER if x in common_encodings)
if not self.common_encodings:
raise Exception("no common encodings found (server: %s vs client: %s, excluding: %s)" % (csv(self._encoders.keys()), csv(self.core_encodings), csv(exclude)))
#ensure the encoding chosen is supported by this source:
if (encoding in self.common_encodings or encoding in ("auto", "grayscale")) and len(self.common_encodings)>1:
self.encoding = encoding
else:
self.encoding = self.common_encodings[0]
log("ws.update_encoding_selection(%s, %s, %s) encoding=%s, common encodings=%s",
encoding, exclude, init, self.encoding, self.common_encodings)
assert self.encoding is not None
#auto-refresh:
if self.client_refresh_encodings:
#client supplied list, honour it:
ropts = set(self.client_refresh_encodings)
else:
#sane defaults:
ropts = set(REFRESH_ENCODINGS) #default encodings for auto-refresh
if self.refresh_quality<100 and self.image_depth>16:
ropts.add("jpeg")
are = ()
if self.supports_transparency:
are = tuple(x for x in self.common_encodings if x in ropts and x in TRANSPARENCY_ENCODINGS)
if not are:
are = tuple(x for x in self.common_encodings if x in ropts) or self.common_encodings
self.auto_refresh_encodings = tuple(x for x in PREFERRED_ENCODING_ORDER if x in are)
log("update_encoding_selection: client refresh encodings=%s, auto_refresh_encodings=%s",
self.client_refresh_encodings, self.auto_refresh_encodings)
self.update_quality()
self.update_speed()
self.update_encoding_options()
self.update_refresh_attributes()
def update_encoding_options(self, force_reload=False):
cv = self.global_statistics.congestion_value
self._want_alpha = self.is_tray or (self.has_alpha and self.supports_transparency)
ww, wh = self.window_dimensions
opr = self._opaque_region
if opr and len(opr)==4:
r = rectangle(*opr)
if r.contains(0, 0, ww, wh):
#window is fully opaque
self._want_alpha = False
self._lossless_threshold_base = min(90, 60+self._current_speed//5 + int(cv*100))
if self.content_type=="text" or self.is_shadow:
self._lossless_threshold_base -= 20
self._lossless_threshold_pixel_boost = max(5, 20-self._current_speed//5)
#calculate the threshold for using rgb
#if speed is high, assume we have bandwidth to spare
smult = max(0.25, (self._current_speed-50)/5.0)
qmult = max(0, self._current_quality/20.0)
pcmult = min(20, 0.5+self.statistics.packet_count)/20.0
max_rgb_threshold = 32*1024
min_rgb_threshold = 2048
if cv>0.1:
max_rgb_threshold = int(32*1024/(1+cv))
min_rgb_threshold = 1024
bwl = self.bandwidth_limit
if bwl:
max_rgb_threshold = min(max_rgb_threshold, max(bwl//1000, 1024))
weight = 1 + int(self.is_OR or self.is_tray or self.is_shadow)*2
v = int(MAX_PIXELS_PREFER_RGB * pcmult * smult * qmult * weight)
crs = self.client_render_size
if crs and DOWNSCALE:
if crs[0]<ww or crs[1]<wh:
#client will downscale, best to avoid sending rgb,
#so we can more easily downscale at this end:
max_rgb_threshold = 1024
self._rgb_auto_threshold = min(max_rgb_threshold, max(min_rgb_threshold, v))
self.assign_encoding_getter()
log("update_encoding_options(%s) wid=%i, want_alpha=%s, speed=%i, quality=%i",
force_reload, self.wid, self._want_alpha, self._current_speed, self._current_quality)
log("lossless threshold: %s / %s, rgb auto threshold=%i (min=%i, max=%i)",
self._lossless_threshold_base, self._lossless_threshold_pixel_boost,
self._rgb_auto_threshold, min_rgb_threshold, max_rgb_threshold, self.get_best_encoding)
log("bandwidth-limit=%i, get_best_encoding=%s", bwl, self.get_best_encoding)
def assign_encoding_getter(self):
self.get_best_encoding = self.get_best_encoding_impl()
def get_best_encoding_impl(self):
if HARDCODED_ENCODING:
return self.hardcoded_encoding
if self._encoding_hint and self._encoding_hint in self._encoders:
return self.encoding_is_hint
#choose which method to use for selecting an encoding
#first the easy ones (when there is no choice):
if self._mmap_size>0 and self.encoding!="grayscale":
return self.encoding_is_mmap
if self.encoding=="png/L":
#(png/L would look awful if we mixed it with something else)
return self.encoding_is_pngL
if self.image_depth==8:
#limited options:
if self.encoding=="grayscale":
assert "png/L" in self.common_encodings
return self.encoding_is_pngL
assert "png/P" in self.common_encodings
return self.encoding_is_pngP
if self.strict and self.encoding!="auto":
#honour strict flag
if self.encoding=="rgb":
#choose between rgb32 and rgb24 already
#as alpha support does not change without going through this method
if self._want_alpha and "rgb32" in self.common_encodings:
return self.encoding_is_rgb32
assert "rgb24" in self.common_encodings
return self.encoding_is_rgb24
return self.get_strict_encoding
if self._want_alpha or self.is_tray:
if self.encoding in ("rgb", "rgb32") and "rgb32" in self.common_encodings:
return self.encoding_is_rgb32
if self.encoding in ("png", "png/P"):
#chosen encoding does alpha, stick to it:
#(prevents alpha bleeding artifacts,
# as different encoders may encode alpha differently)
return self.get_strict_encoding
if self.encoding=="grayscale":
return self.encoding_is_grayscale
#choose an alpha encoding and keep it?
return self.get_transparent_encoding
if self.encoding=="rgb":
#if we're here we don't need alpha, so try rgb24 first:
if "rgb24" in self.common_encodings:
return self.encoding_is_rgb24
if "rgb32" in self.common_encodings:
return self.encoding_is_rgb32
return self.get_best_encoding_impl_default()
def get_best_encoding_impl_default(self):
#stick to what is specified or use rgb for small regions:
if self.encoding=="auto":
return self.get_auto_encoding
if self.encoding=="grayscale":
return self.encoding_is_grayscale
return self.get_current_or_rgb
def hardcoded_encoding(self, *_args):
return HARDCODED_ENCODING
def encoding_is_hint(self, *_args):
return self._encoding_hint
def encoding_is_mmap(self, *_args):
return "mmap"
def encoding_is_pngL(self, *_args):
return "png/L"
def encoding_is_pngP(self, *_args):
return "png/P"
def encoding_is_rgb32(self, *_args):
return "rgb32"
def encoding_is_rgb24(self, *_args):
return "rgb24"
def get_strict_encoding(self, *_args):
return self.encoding
def encoding_is_grayscale(self, *args):
e = self.get_auto_encoding(*args) #pylint: disable=no-value-for-parameter
if e.startswith("rgb") or e.startswith("png"):
return "png/L"
return e
def get_transparent_encoding(self, w, h, speed, quality, current_encoding):
#small areas prefer rgb, also when high speed and high quality
if current_encoding in TRANSPARENCY_ENCODINGS:
return current_encoding
pixel_count = w*h
depth = self.image_depth
co = self.common_encodings
def canuse(e):
return e in co and e in TRANSPARENCY_ENCODINGS
if canuse("rgb32") and (
pixel_count<self._rgb_auto_threshold or
(quality>=90 and speed>=90) or
(depth>24 and self.client_bit_depth>24)
):
#the only encoding that can do higher bit depth at present
return "rgb32"
if canuse("webp") and depth in (24, 32) and 16383>=w>=2 and 16383>=h>=2:
return "webp"
for x in TRANSPARENCY_ENCODINGS:
if x in self.common_encodings:
return x
#so we don't have an encoding that does transparency...
return self.get_auto_encoding(w, h, speed, quality)
def get_auto_encoding(self, w, h, speed, quality, *_args):
co = self.common_encodings
depth = self.image_depth
if w*h<self._rgb_auto_threshold:
if depth>24 and self.client_bit_depth>24 and "rgb32" in co: