4 files changed, 339 insertions, 0 deletions
diff --git a/py_include/homekit/camera/__init__.py b/py_include/homekit/camera/__init__.py
new file mode 100644
index 0000000..626930b
--- /dev/null
+++ b/py_include/homekit/camera/__init__.py
@@ -0,0 +1 @@
+from .types import CameraType
+\ No newline at end of file
diff --git a/py_include/homekit/camera/esp32.py b/py_include/homekit/camera/esp32.py
new file mode 100644
index 0000000..fe6de0e
--- /dev/null
+++ b/py_include/homekit/camera/esp32.py
@@ -0,0 +1,226 @@
+import logging
+import requests
+import json
+import asyncio
+import aioshutil
+
+from io import BytesIO
+from functools import partial
+from typing import Union, Optional
+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
+
+    async def syncsettings(self, settings) -> bool:
+        status = await 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})')
+
+                await 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
+
+    async def capture(self, output: Optional[str] = None) -> Union[BytesIO, bool]:
+        kw = {}
+        if output:
+            kw['save_to'] = output
+        else:
+            kw['as_bytes'] = True
+        return await self._call('capture', **kw)
+
+    async def getstatus(self):
+        return json.loads(await self._call('status'))
+
+    async def setflash(self, enable: bool):
+        await self._control('flash', int(enable))
+
+    async def setframesize(self, fs: Union[int, FrameSize]):
+        if type(fs) is int:
+            fs = FrameSize(fs)
+        await self._control('framesize', fs.value)
+
+    async def sethmirror(self, enable: bool):
+        await self._control('hmirror', int(enable))
+
+    async def setvflip(self, enable: bool):
+        await self._control('vflip', int(enable))
+
+    async def setawb(self, enable: bool):
+        await self._control('awb', int(enable))
+
+    async def setawbgain(self, enable: bool):
+        await self._control('awb_gain', int(enable))
+
+    async def setwbmode(self, mode: WBMode):
+        await self._control('wb_mode', mode.value)
+
+    async def setaecsensor(self, enable: bool):
+        await self._control('aec', int(enable))
+
+    async def setaecdsp(self, enable: bool):
+        await self._control('aec2', int(enable))
+
+    async def setagc(self, enable: bool):
+        await self._control('agc', int(enable))
+
+    async def setagcgain(self, gain: int):
+        _assert_bounds(gain, 1, 31)
+        await self._control('agc_gain', gain)
+
+    async def setgainceiling(self, gainceiling: int):
+        _assert_bounds(gainceiling, 2, 128)
+        await self._control('gainceiling', gainceiling)
+
+    async def setbpc(self, enable: bool):
+        await self._control('bpc', int(enable))
+
+    async def setwpc(self, enable: bool):
+        await self._control('wpc', int(enable))
+
+    async def setrawgma(self, enable: bool):
+        await self._control('raw_gma', int(enable))
+
+    async def setlenscorrection(self, enable: bool):
+        await self._control('lenc', int(enable))
+
+    async def setdcw(self, enable: bool):
+        await self._control('dcw', int(enable))
+
+    async def setcolorbar(self, enable: bool):
+        await self._control('colorbar', int(enable))
+
+    async def setquality(self, q: int):
+        _assert_bounds(q, 4, 63)
+        await self._control('quality', q)
+
+    async def setbrightness(self, brightness: int):
+        _assert_bounds(brightness, -2, -2)
+        await self._control('brightness', brightness)
+
+    async def setcontrast(self, contrast: int):
+        _assert_bounds(contrast, -2, 2)
+        await self._control('contrast', contrast)
+
+    async def setsaturation(self, saturation: int):
+        _assert_bounds(saturation, -2, 2)
+        await self._control('saturation', saturation)
+
+    async def _control(self, var: str, value: Union[int, str]):
+        return await self._call('control', params={'var': var, 'val': value})
+
+    async def _call(self,
+                    method: str,
+                    params: Optional[dict] = None,
+                    save_to: Optional[str] = None,
+                    as_bytes=False) -> Union[str, bool, BytesIO]:
+        loop = asyncio.get_event_loop()
+
+        if not self.isfirstrequest and self.delay > 0:
+            sleeptime = self.delay / 1000
+            self.logger.debug(f'sleeping for {sleeptime}')
+
+            await asyncio.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 = await loop.run_in_executor(None,
+                                       partial(requests.get, url, **kwargs))
+        if r.status_code != 200:
+            raise ApiResponseError(status_code=r.status_code)
+
+        if as_bytes:
+            return BytesIO(r.content)
+
+        if save_to:
+            r.raise_for_status()
+            with open(save_to, 'wb') as f:
+                await aioshutil.copyfileobj(r.raw, f)
+            return True
+
+        return r.text
diff --git a/py_include/homekit/camera/types.py b/py_include/homekit/camera/types.py
new file mode 100644
index 0000000..de59022
--- /dev/null
+++ b/py_include/homekit/camera/types.py
@@ -0,0 +1,5 @@
+from enum import Enum
+
+
+class CameraType(Enum):
+    ESP32 = 'esp32'
diff --git a/py_include/homekit/camera/util.py b/py_include/homekit/camera/util.py
new file mode 100644
index 0000000..97f35aa
--- /dev/null
+++ b/py_include/homekit/camera/util.py
@@ -0,0 +1,107 @@
+import asyncio
+import os.path
+import logging
+import psutil
+
+from typing import List, Tuple
+from ..util import chunks
+from ..config import config
+
+_logger = logging.getLogger(__name__)
+_temporary_fixing = '.temporary_fixing.mp4'
+
+
+def _get_ffmpeg_path() -> str:
+    return 'ffmpeg' if 'ffmpeg' not in config else config['ffmpeg']['path']
+
+
+def time2seconds(time: str) -> int:
+    time, frac = time.split('.')
+    frac = int(frac)
+
+    h, m, s = [int(i) for i in time.split(':')]
+
+    return round(s + m*60 + h*3600 + frac/1000)
+
+
+async def ffmpeg_recreate(filename: str):
+    filedir = os.path.dirname(filename)
+    tempname = os.path.join(filedir, _temporary_fixing)
+    mtime = os.path.getmtime(filename)
+
+    args = [_get_ffmpeg_path(), '-nostats', '-loglevel', 'error', '-i', filename, '-c', 'copy', '-y', tempname]
+    proc = await asyncio.create_subprocess_exec(*args,
+                                                stdout=asyncio.subprocess.PIPE,
+                                                stderr=asyncio.subprocess.PIPE)
+    stdout, stderr = await proc.communicate()
+    if proc.returncode != 0:
+        _logger.error(f'fix_timestamps({filename}): ffmpeg returned {proc.returncode}, stderr: {stderr.decode().strip()}')
+
+    if os.path.isfile(tempname):
+        os.unlink(filename)
+        os.rename(tempname, filename)
+        os.utime(filename, (mtime, mtime))
+        _logger.info(f'fix_timestamps({filename}): OK')
+    else:
+        _logger.error(f'fix_timestamps({filename}): temp file \'{tempname}\' does not exists, fix failed')
+
+
+async def ffmpeg_cut(input: str,
+                     output: str,
+                     start_pos: int,
+                     duration: int):
+    args = [_get_ffmpeg_path(), '-nostats', '-loglevel', 'error', '-i', input,
+            '-ss', str(start_pos), '-t', str(duration),
+            '-c', 'copy', '-y', output]
+    proc = await asyncio.create_subprocess_exec(*args,
+                                                stdout=asyncio.subprocess.PIPE,
+                                                stderr=asyncio.subprocess.PIPE)
+    stdout, stderr = await proc.communicate()
+    if proc.returncode != 0:
+        _logger.error(f'ffmpeg_cut({input}, start_pos={start_pos}, duration={duration}): ffmpeg returned {proc.returncode}, stderr: {stderr.decode().strip()}')
+    else:
+        _logger.info(f'ffmpeg_cut({input}): OK')
+
+
+def dvr_scan_timecodes(timecodes: str) -> List[Tuple[int, int]]:
+    tc_backup = timecodes
+
+    timecodes = timecodes.split(',')
+    if len(timecodes) % 2 != 0:
+        raise DVRScanInvalidTimecodes(f'invalid number of timecodes. input: {tc_backup}')
+
+    timecodes = list(map(time2seconds, timecodes))
+    timecodes = list(chunks(timecodes, 2))
+
+    # sort out invalid fragments (dvr-scan returns them sometimes, idk why...)
+    timecodes = list(filter(lambda f: f[0] < f[1], timecodes))
+    if not timecodes:
+        raise DVRScanInvalidTimecodes(f'no valid timecodes. input: {tc_backup}')
+
+    # https://stackoverflow.com/a/43600953
+    timecodes.sort(key=lambda interval: interval[0])
+    merged = [timecodes[0]]
+    for current in timecodes:
+        previous = merged[-1]
+        if current[0] <= previous[1]:
+            previous[1] = max(previous[1], current[1])
+        else:
+            merged.append(current)
+
+    return merged
+
+
+class DVRScanInvalidTimecodes(Exception):
+    pass
+
+
+def has_handle(fpath):
+    for proc in psutil.process_iter():
+        try:
+            for item in proc.open_files():
+                if fpath == item.path:
+                    return True
+        except Exception:
+            pass
+
+    return False
+\ No newline at end of file