# Record TCefMediaObserver

Description
Hierarchy
Fields
Methods
Properties

## Unit

uCEFTypes

## Declaration

`type TCefMediaObserver = record`

## Description

Implemented by the client to observe MediaRouter events and registered via ICefMediaRouter.AddObserver. The functions of this structure will be called on the browser process UI thread.

Implemented by ICefMediaObserver.

<see href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/cef_media_router_capi.h">CEF source file: /include/capi/cef_media_router_capi.h (cef_media_observer_t))

## Overview

### Fields

| `base: TCefBaseRefCounted;`
| `on_sinks: procedure(self: PCefMediaObserver; sinksCount: NativeUInt; const sinks: PPCefMediaSink); stdcall;`
| `on_routes: procedure(self: PCefMediaObserver; routesCount: NativeUInt; const routes: PPCefMediaRoute); stdcall;`
| `on_route_state_changed: procedure(self: PCefMediaObserver; route: PCefMediaRoute; state: TCefMediaRouteConnectionState); stdcall;`
| `on_route_message_received: procedure(self: PCefMediaObserver; route: PCefMediaRoute; const message_: Pointer; message_size: NativeUInt); stdcall;`

## Description

### Fields

| `base: TCefBaseRefCounted;`
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| `on_sinks: procedure(self: PCefMediaObserver; sinksCount: NativeUInt; const sinks: PPCefMediaSink); stdcall;`
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| `on_routes: procedure(self: PCefMediaObserver; routesCount: NativeUInt; const routes: PPCefMediaRoute); stdcall;`
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| `on_route_state_changed: procedure(self: PCefMediaObserver; route: PCefMediaRoute; state: TCefMediaRouteConnectionState); stdcall;`
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| `on_route_message_received: procedure(self: PCefMediaObserver; route: PCefMediaRoute; const message_: Pointer; message_size: NativeUInt); stdcall;`
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