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import logging
import shutil
import requests
import json
from typing import Union, Optional
from time import sleep
from enum import Enum
from ..api.errors import ApiResponseError
from ..util import Addr
class FrameSize(Enum):
UXGA_1600x1200 = 13
SXGA_1280x1024 = 12
HD_1280x720 = 11
XGA_1024x768 = 10
SVGA_800x600 = 9
VGA_640x480 = 8
HVGA_480x320 = 7
CIF_400x296 = 6
QVGA_320x240 = 5
N_240x240 = 4
HQVGA_240x176 = 3
QCIF_176x144 = 2
QQVGA_160x120 = 1
N_96x96 = 0
class WBMode(Enum):
AUTO = 0
SUNNY = 1
CLOUDY = 2
OFFICE = 3
HOME = 4
def _assert_bounds(n: int, min: int, max: int):
if not min <= n <= max:
raise ValueError(f'value must be between {min} and {max}')
class WebClient:
def __init__(self, addr: Addr):
self.endpoint = f'http://{addr[0]}:{addr[1]}'
self.logger = logging.getLogger(self.__class__.__name__)
self.delay = 0
self.isfirstrequest = True
def syncsettings(self, settings) -> bool:
status = self.getstatus()
self.logger.debug(f'syncsettings: status={status}')
changed_anything = False
for name, value in settings.items():
server_name = name
if name == 'aec_dsp':
server_name = 'aec2'
if server_name not in status:
# legacy compatibility
if server_name != 'vflip':
self.logger.warning(f'syncsettings: field `{server_name}` not found in camera status')
continue
try:
# server returns 0 or 1 for bool values
if type(value) is bool:
value = int(value)
if status[server_name] == value:
continue
except KeyError as exc:
if name != 'vflip':
self.logger.error(exc)
try:
# fix for cases like when field is called raw_gma, but method is setrawgma()
name = name.replace('_', '')
func = getattr(self, f'set{name}')
self.logger.debug(f'syncsettings: calling set{name}({value})')
func(value)
changed_anything = True
except AttributeError as exc:
self.logger.exception(exc)
self.logger.error(f'syncsettings: method set{name}() not found')
return changed_anything
def setdelay(self, delay: int):
self.delay = delay
def capture(self, save_to: str):
self._call('capture', save_to=save_to)
def getstatus(self):
return json.loads(self._call('status'))
def setflash(self, enable: bool):
self._control('flash', int(enable))
def setframesize(self, fs: Union[int, FrameSize]):
if type(fs) is int:
fs = FrameSize(fs)
self._control('framesize', fs.value)
def sethmirror(self, enable: bool):
self._control('hmirror', int(enable))
def setvflip(self, enable: bool):
self._control('vflip', int(enable))
def setawb(self, enable: bool):
self._control('awb', int(enable))
def setawbgain(self, enable: bool):
self._control('awb_gain', int(enable))
def setwbmode(self, mode: WBMode):
self._control('wb_mode', mode.value)
def setaecsensor(self, enable: bool):
self._control('aec', int(enable))
def setaecdsp(self, enable: bool):
self._control('aec2', int(enable))
def setagc(self, enable: bool):
self._control('agc', int(enable))
def setagcgain(self, gain: int):
_assert_bounds(gain, 1, 31)
self._control('agc_gain', gain)
def setgainceiling(self, gainceiling: int):
_assert_bounds(gainceiling, 2, 128)
self._control('gainceiling', gainceiling)
def setbpc(self, enable: bool):
self._control('bpc', int(enable))
def setwpc(self, enable: bool):
self._control('wpc', int(enable))
def setrawgma(self, enable: bool):
self._control('raw_gma', int(enable))
def setlenscorrection(self, enable: bool):
self._control('lenc', int(enable))
def setdcw(self, enable: bool):
self._control('dcw', int(enable))
def setcolorbar(self, enable: bool):
self._control('colorbar', int(enable))
def setquality(self, q: int):
_assert_bounds(q, 4, 63)
self._control('quality', q)
def setbrightness(self, brightness: int):
_assert_bounds(brightness, -2, -2)
self._control('brightness', brightness)
def setcontrast(self, contrast: int):
_assert_bounds(contrast, -2, 2)
self._control('contrast', contrast)
def setsaturation(self, saturation: int):
_assert_bounds(saturation, -2, 2)
self._control('saturation', saturation)
def _control(self, var: str, value: Union[int, str]):
self._call('control', params={'var': var, 'val': value})
def _call(self,
method: str,
params: Optional[dict] = None,
save_to: Optional[str] = None):
if not self.isfirstrequest and self.delay > 0:
sleeptime = self.delay / 1000
self.logger.debug(f'sleeping for {sleeptime}')
sleep(sleeptime)
self.isfirstrequest = False
url = f'{self.endpoint}/{method}'
self.logger.debug(f'calling {url}, params: {params}')
kwargs = {}
if params:
kwargs['params'] = params
if save_to:
kwargs['stream'] = True
r = requests.get(url, **kwargs)
if r.status_code != 200:
raise ApiResponseError(status_code=r.status_code)
if save_to:
r.raise_for_status()
with open(save_to, 'wb') as f:
shutil.copyfileobj(r.raw, f)
return True
return r.text
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