This service template is compliant with the UPnP Device Architecture version 1.0 [14]. It defines a service type referred to herein as RenderingControl.
1.1 Introduction
Most rendering devices contain a number of dynamically configurable attributes that affect how the current content is rendered. For example, video rendering devices, such as TVs, allow user control of display characteristics such as brightness and contrast, whereas audio rendering devices allow control of audio characteristics such as volume, balance, equalizer settings, etc. The RenderingControl service is intended to provide control points with the ability to query and/or adjust any rendering attribute that the device supports.
The RenderingControl service enables a control point to:
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a) Discover the set of attributes supported by the device.
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b) Retrieve the current setting of any supported attribute
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c) Change the setting of (that is: control) any modifiable attribute
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d) Perform a set of content transforms, which, in addition to the above, also enables functionality for selecting content depended options, for example:
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1) Selecting a specific sub-stream in a composite stream for rendering.
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2) Turning subtitling on or off.
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e) Restore the settings defined by a named Preset
The RenderingControl service does not:
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a) Control the flow of the associated content (for example, Play, Stop, Pause, Seek, etc.).
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b) Provide a mechanism to enumerate locally stored content.
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c) Provide a mechanism to send content to another device (via the home network or direct connection).