Python (Autobahn) - WAMP Subscriber/Publisher

Initializing the project

Note: If you are using Python 2.7, you will need to install Microsoft Visual C++ Compiler for Python 2.7.

Run the following command from any directory to install dependencies:

pip install autobahn

If you are using Python 2.7, run the following command to install additional packages:

pip install trollius futures

Project Code

Note: The line from waapi import WAAPI_URI imports a declaration of the API paths.

It is located in <Wwise installation path>/SDK/include/AK/WwiseAuthoringAPI/py. The location of this file was added to Python's path dynamically by extending sys.path in this sample, but you can also copy-paste the waapi.py file along-side the sample files.

Note that the additional file, ak_authobahn.py, provides a special type of component which supports custom options to be sent to WAAPI. This file is provided in the sample's directory.

Python 2.7

Locate the sample file <Wwise installation path>/SDK/samples/WwiseAuthoringAPI/python/wwise-pubsub-wamp/get_ancestors_py2.py.

This file contains the following code, which allows you to connect to the Wwise Authoring API.

import sys
import os

import trollius as asyncio
from trollius import From

from autobahn.asyncio.wamp import ApplicationRunner
from ak_autobahn import AkComponent

# You may also copy-paste the waapi.py file alongside this sample
sys.path.append(os.path.join(os.path.dirname(__file__), '../../../../include/AK/WwiseAuthoringAPI/py'))
from waapi import WAAPI_URI

done = False

class MyComponent(AkComponent):
    def onJoin(self, details):
        def on_object_created(**kwargs):
            result = kwargs[u"object"]

            print("The object was created in the category: {}".format(result[u"category"]))

            arguments = {
                "from": {"id": [result.get("id")]},
                "transform": [{"select": ["ancestors"]}],
                "options": {
                    "return": ["name"]
                }
            }

            res = yield From(self.call(WAAPI_URI.ak_wwise_core_object_get, **arguments))

            ancestors = res.kwresults[u"return"]
            print(u"Ancestor of {}:".format(result[u"id"]))
            for ancestor in ancestors:
                print("\t{}".format(ancestor[u"name"]))
            
            global done
            if not done:
                self.leave() # Disconnect
            done = True
            
        subscribe_args = {
            "options": {
                "return": ["id", "name", "category"]
            }
        }

        # Subscribe to ak.wwise.core.object.created
        # Calls on_object_created whenever the event is received
        yield From(self.subscribe(on_object_created,
                                  WAAPI_URI.ak_wwise_core_object_created,
                                  **subscribe_args))

        print("Create an object in the Project Explorer")

    def onDisconnect(self):
        print("The client was disconnected.")
        asyncio.get_event_loop().stop()

if __name__ == '__main__':
    runner = ApplicationRunner(url=u"ws://127.0.0.1:8080/waapi", realm=u"get_ancestors_demo")
    try:
        runner.run(MyComponent)
    except Exception as e:
        print(type(e).__name__ + ": Is Wwise running and Wwise Authoring API enabled?")

Python 3.6

Locate the sample file <Wwise installation path>/SDK/samples/WwiseAuthoringAPI/python/wwise-pubsub-wamp/get_ancestors_py3.py.

This file contains the following code, which allows you to connect to the Wwise Authoring API.

import asyncio
import sys
import os

from autobahn.asyncio.wamp import ApplicationRunner
from ak_autobahn import AkComponent

# You may also copy-paste the waapi.py file alongside this sample
sys.path.append(os.path.join(os.path.dirname(__file__), '../../../../include/AK/WwiseAuthoringAPI/py'))
from waapi import WAAPI_URI

done = False

class MyComponent(AkComponent):
    def onJoin(self, details):
        def on_object_created(**kwargs):
            result = kwargs[u"object"]

            print("The object was created in the category: {}".format(result[u"category"]))

            arguments = {
                "from": {"id": [result.get("id")]},
                "transform": [{"select": ["ancestors"]}],
                "options": {
                    "return": ["name"]
                }
            }

            res = yield from self.call(WAAPI_URI.ak_wwise_core_object_get, **arguments)

            ancestors = res.kwresults[u"return"]
            print(u"Ancestor of {}:".format(result[u"id"]))
            for ancestor in ancestors:
                print("\t{}".format(ancestor[u"name"]))
            
            global done
            if not done:
                self.leave() # Disconnect
            done = True

        subscribe_args = {
            "options": {
                "return": ["id", "name", "category"]
            }
        }

        # Subscribe to ak.wwise.core.object.created
        # Calls on_object_created whenever the event is received 
        yield from self.subscribe(on_object_created,
                                  WAAPI_URI.ak_wwise_core_object_created,
                                  **subscribe_args)

        print("Create an object in the Project Explorer")

    def onDisconnect(self):
        print("The client was disconnected.")
        asyncio.get_event_loop().stop()

if __name__ == '__main__':
    runner = ApplicationRunner(url=u"ws://127.0.0.1:8080/waapi", realm=u"get_ancestors_demo")
    try:
        runner.run(MyComponent)
    except Exception as e:
        print(type(e).__name__ + ": Is Wwise running and Wwise Authoring API enabled?")

Running the project

Run the sample file from its directory using the following command:

Python 2.7:

python get_ancestors_py2.py

Python 3.6:

python get_ancestors_py3.py

Create an object in the Project Explorer and the list of its ancestors will be displayed. The sample terminates the connection after the ancestors are retrieved.

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Wwise SDK 2017.1.9