myvtm/Module/mod_mediacontroller/MediaService.xml

<?xml version="1.0" encoding="gb2312" ?>
<entity name="MediaController">
	<class name="MediaService" overlap="true" exclusive="false">
		<twoway name="GetVideoDeviceName" overlap="true">
			<res>
				<param name="frontcam" type="string"/>
				<param name="rearcam" type="string"/>
			</res>
		</twoway>
		<oneway name="StartCamera" overlap="true">
		</oneway>
		<oneway name="StopCamera" overlap="true">
		</oneway>
		<twoway name="StartEnvCamera" overlap="true">
			<res>
				<param name="returncod" type="int"/>
			</res>
		</twoway>
		<oneway name="StopEnvCamera" overlap="true">
		</oneway>
		<oneway name="StartSpeakerRender" overlap="true">
		</oneway>
		<oneway name="StopSpeakerRender" overlap="true">
		</oneway>
		<twoway name="ManipulateMediaDevice" overlap="true">
            <req>
                <!--操作意图指令： 0:获取并接管设备权限；1：归还设备权限，不再占用-->
                <param name="cmdType" type="int"/>
                <!--设备类型：0：无效参数；1：ENV环境摄像头；2：OPT操作摄像头；3：EWS外部广角摄像头；4：高拍仪文档摄像头；5：高拍仪上接摄像头-->
                <param name="devType" type="int"/>
                <param name="reserved1" type="int"/>
                <param name="reserved2" type="string"/>
            </req>
                <!--实体收到接口请求时无论操作成功与否返回Answer(Error_Succeed)，具体操作成功与否通过retCode标识-->
            <res>
                <!--retCode：0:表示成功，非0:表示失败 -->
                <param name="retCode" type="int"/>
                <param name="reserved1" type="int"/>
                <param name="reserved2" type="string"/>
            </res>
        </twoway>
	</class>
	<!-- 内置摄像头切换外接摄像头失败消息 -->
	<message name="ExternalCameraSwitchFailed">
		<!-- 失败提示 -->
		<param name="failedmsg" type="wstring"/>
	</message>
	<!-- 外接摄像头插入消息 -->
	<message name="ExternalCameraInserted">
		<!-- 摄像头名称 -->
		<param name="camname" type="wstring"/>
	</message>
	<!-- 外接摄像头移除消息 -->
	<message name="ExternalCameraRemoved">
		<!-- 摄像头名称 -->
		<param name="camname" type="wstring"/>
	</message>
	<!-- 外接摄像头启动状态变化消息 -->
	<message name="ExternalCameraStateChanged">
		<!-- 状态消息 -->
		<param name="statemsg" type="wstring"/>
		<!-- 摄像头名称 -->
		<param name="camname" type="wstring"/>
	</message>
</entity>