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至顶头条
作者：智慧的鱼 来源：天极开发 2007年10月16日
关键字：
| Event notification code Description 1 EC_ACTIVATE A video window is being activated or deactivated. 2EC_BUFFERING_DATA The graph is buffering data, or has stopped buffering data. 3EC_BUILT Send by the Video Control when a graph has been built. Not forwarded to applications. 4EC_CLOCK_CHANGED The reference clock has changed. 5EC_CLOCK_UNSET The clock provider was disconnected. 6EC_CODECAPI_EVENT Sent by an encoder to signal an encoding event. 7EC_COMPLETE All data from a particular stream has been rendered. 8EC_DEVICE_LOST A Plug and Play device was removed or has become available again. 9EC_DISPLAY_CHANGED The display mode has changed. 10EC_END_OF_SEGMENT The end of a segment has been reached. 11EC_ERROR_STILLPLAYING An asynchronous command to run the graph has failed. 12EC_ERRORABORT An operation was aborted because of an error. 13 EC_EXTDEVICE_MODE_CHANGE Not supported. 14EC_FULLSCREEN_LOST The video renderer is switching out of full-screen mode. 15EC_GRAPH_CHANGED The filter graph has changed. 16EC_LENGTH_CHANGED The length of a source has changed. 17EC_NEED_RESTART A filter is requesting that the graph be restarted. 18EC_NOTIFY_WINDOW Notifies a filter of the video renderer's window. 19EC_OLE_EVENT A filter is passing a text string to the application. 20EC_OPENING_FILE The graph is opening a file, or has finished opening a file. 21EC_PALETTE_CHANGED The video palette has changed. 22EC_PAUSED A pause request has completed. 23EC_QUALITY_CHANGE The graph is dropping samples, for quality control. 24EC_REPAINT A video renderer requires a repaint. 25EC_SEGMENT_STARTED A new segment has started. 26EC_SHUTTING_DOWN The filter graph is shutting down, prior to being destroyed. 27EC_SNDDEV_IN_ERROR An audio device error has occurred on an input pin. 28EC_SNDDEV_OUT_ERROR An audio device error has occurred on an output pin. 29EC_STARVATION A filter is not receiving enough data. 30EC_STATE_CHANGE The filter graph has changed state. 31EC_STEP_COMPLETE A filter performing frame stepping has stepped the specified number of frames. 32EC_STREAM_CONTROL_STARTED A stream-control start command has taken effect. 33EC_STREAM_CONTROL_STOPPED A stream-control start command has taken effect. 34EC_STREAM_ERROR_STILLPLAYING An error has occurred in a stream. The stream is still playing. 35EC_STREAM_ERROR_STOPPED A stream has stopped because of an error. 36EC_TIMECODE_AVAILABLE Not supported. 37EC_UNBUILT Send by the Video Control when a graph has been torn down. Not forwarded to applications. 38EC_USERABORT The user has terminated playback. 39EC_VIDEO_SIZE_CHANGED The native video size has changed. 40EC_VMR_RENDERDEVICE_SET Sent when the VMR has selected its rendering mechanism. 41EC_VMR_SURFACE_FLIPPED Sent when the VMR-7's allocator presenter has called the DirectDraw Flip method on the surface being presented. 42EC_VMR_RECONNECTION_FAILED Sent by the VMR-7 and the VMR-9 when it was unable to accept a dynamic format change request from the upstream decoder. 43EC_WINDOW_DESTROYED The video renderer was destroyed or removed from the graph. 44EC_WMT_EVENT Sent by the Windows Media Format SDK when an application uses the ASF Reader filter to play ASF files protected by digital rights management (DRM). 45EC_WMT_INDEX_EVENT Sent by the Windows Media Format SDK when an application uses the ASF Writer to index Windows Media Video files. |
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