# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
from __future__ import division
import warnings
from telemetry.internal.util import external_modules
from telemetry.util import color_histogram
from telemetry.util import rgba_color
import png
cv2 = external_modules.ImportOptionalModule('cv2')
np = external_modules.ImportRequiredModule('numpy')
def Channels(image):
return image.shape[2]
def Width(image):
return image.shape[1]
def Height(image):
return image.shape[0]
def Pixels(image):
return bytearray(np.uint8(
from devil.android.sdk import version_codes
from devil.android.tools import provision_devices
from devil.android.tools import video_recorder
try:
# devil.android.forwarder uses fcntl, which doesn't exist on Windows.
from devil.android import forwarder
except ImportError:
forwarder = None
try:
from devil.android.perf import surface_stats_collector
except Exception: # pylint: disable=broad-except
surface_stats_collector = None
psutil = external_modules.ImportOptionalModule('psutil')
_ARCH_TO_STACK_TOOL_ARCH = {
'armeabi-v7a': 'arm',
'arm64-v8a': 'arm64',
}
_DEVICE_COPY_SCRIPT_FILE = os.path.abspath(
os.path.join(os.path.dirname(__file__),
'efficient_android_directory_copy.sh'))
_DEVICE_COPY_SCRIPT_LOCATION = (
'/data/local/tmp/efficient_android_directory_copy.sh')
_DEVICE_MEMTRACK_HELPER_LOCATION = '/data/local/tmp/profilers/memtrack_helper'
_DEVICE_CLEAR_SYSTEM_CACHE_TOOL_LOCATION = '/data/local/tmp/clear_system_cache'
class AndroidPlatformBackend(
# Copyright 2014 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Color Histograms and implementations of functions operating on them."""
from __future__ import division
import collections
from telemetry.internal.util import external_modules
np = external_modules.ImportOptionalModule('numpy')
def HistogramDistance(hist1, hist2, default_color=None):
"""Earth mover's distance.
http://en.wikipedia.org/wiki/Earth_mover's_distance"""
if len(hist1) != len(hist2):
raise ValueError('Trying to compare histograms '
'of different sizes, %s != %s' %
(len(hist1), len(hist2)))
if len(hist1) == 0:
return 0
sum_func = np.sum if np is not None else sum
n1 = sum_func(hist1)
n2 = sum_func(hist2)
if (n1 == 0 or n2 == 0) and default_color is None:
raise ValueError('Histogram has no data and no default color.')
if n1 == 0:
