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mixerapi.py
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mixerapi.py
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#!/usr/bin/env python3
from aiohttp import web
import videomixer
import json
class MixerApi:
def __init__(self):
self.videomixers = {}
app = web.Application()
print("Starting API server...")
app.router.add_route('GET',
'/streams',
self.get_streams_handler)
app.router.add_route('GET',
'/stream/{stream_id}',
self.get_stream_handler)
app.router.add_route('PUT',
'/stream/{stream_id}',
self.create_handler)
app.router.add_route('PUT',
'/stream/{stream_id}/{pip_id}',
self.add_stream_handler)
app.router.add_route('POST',
'/stream/{stream_id}/resize/{pip_id}',
self.resize_handler)
app.router.add_route('POST',
'/stream/{stream_id}/move/{pip_id}',
self.move_pip_handler)
# TODO: implement these.
app.router.add_route('DELETE',
'/stream/{stream_id}/{pip_id}',
self.remove_pip_handler)
app.router.add_route('DELETE',
'/stream/{stream_id}',
self.delete_handler)
self.app = app
def get_handler(self):
return self.app.make_handler()
def get_streams_handler(self, request):
streams = []
for stream_id in self.videomixers.keys():
streams.append(stream_id)
return web.Response(text=json.dumps(streams))
def add_stream_handler(self, request):
stream_id = request.match_info.get('stream_id')
pip_id = request.match_info.get('pip_id')
if stream_id in self.videomixers:
print("Found stream {}".format(stream_id))
else:
print("Could not find stream {}".format(stream_id))
return web.Response(text=self.fail_status())
body = yield from request.json()
stream_uri = body['stream_uri']
# default to the origin (0, 0)
xpos = int(body['x']) if 'x' in body else 0
ypos = int(body['y']) if 'y' in body else 0
# default to z=1 (background has z=0)
zpos = int(body['z']) if 'z' in body else 1
mixer = self.videomixers[stream_id]
mixer.add_rtmp_source(pip_id, stream_uri, xpos, ypos, zpos)
# kick off the new source
mixer.play()
return web.Response(text=self.ok_status())
def resize_handler(self, request):
stream_id = request.match_info.get('stream_id')
pip_id = request.match_info.get('pip_id')
if stream_id in self.videomixers:
print("Found stream")
else:
print("Could not find stream {}".format(stream_id))
return web.Response(text=self.fail_status())
body = yield from request.json()
width = body['width']
height = body['height']
self.videomixers[stream_id].resize(pip_id, width, height)
return web.Response(text=self.ok_status())
def move_pip_handler(self, request):
stream_id = request.match_info.get('stream_id')
pip_id = request.match_info.get('pip_id')
if stream_id in self.videomixers:
print("Found stream {}".format(stream_id))
else:
print("Could not find stream {}".format(stream_id))
return web.Response(text=self.fail_status())
body = yield from request.json()
xpos = body['x']
ypos = body['y']
zpos = body['z']
self.videomixers[stream_id].move(pip_id, x, y, z)
return web.Response(text=self.ok_status())
def remove_pip_handler(self, request):
stream_id = request.match_info.get('stream_id')
pip_id = request.match_info.get('pip_id')
if stream_id in self.videomixers:
print("Found stream {}".format(stream_id))
else:
print("Could not find stream {}".format(stream_id))
return web.Response(text=self.fail_status())
# XXX: implement this
return web.Response(text=self.ok_status())
def get_stream_handler(self, request):
stream_id = request.match_info.get('stream_id')
if stream_id in self.videomixers:
print("Found stream {}".format(stream_id))
else:
print("Could not find stream {}".format(stream_id))
return web.Response(text=self.fail_status())
mixer = self.videomixers[stream_id]
ret = {}
ret['stream_id'] = stream_id
ret['mixer'] = mixer.get_info()
return web.Response(text=json.dumps(ret))
def delete_handler(self, request):
stream_id = request.match_info.get('stream_id')
if stream_id in self.videomixers:
print("Found stream {}".format(stream_id))
else:
print("Could not find stream {}".format(stream_id))
return web.Response(text=self.fail_status())
# XXX: implement this
return web.Response(text=self.ok_status())
def create_handler(self, request):
stream_id = request.match_info.get('stream_id')
if stream_id in self.videomixers:
print("Stream {} already exists".format(stream_id))
return web.Response(text=self.fail_status())
body = yield from request.json()
print("Creating new stream {}".format(stream_id))
output_uri = body['output_uri']
bg_uri = body['bg_uri']
print("Creating a videomixer for stream_id={} {} -> {}...".format(
stream_id,
bg_uri,
output_uri))
mixer = videomixer.VideoMixer(output_uri)
mixer.add_rtmp_source('bg', bg_uri)
mixer.play()
# Keep track of the mixer for future requests
self.videomixers[stream_id] = mixer
return web.Response(text=self.ok_status())
def ok_status(self):
return json.dumps({'status': 'OK'})
def fail_status(self):
return json.dumps({'status': 'FAIL'})