| 摘要 |
A video composition model that provides a set of application programming interfaces (APIs) to set device contexts, and determine capabilities of graphics hardware from a device driver. After the model determines a configuration, the model determines input video stream states applicable to frame rates, color-spaces and alpha indexing of input video streams, interactive graphics, and background images. The model prepares the input video frames and reference frames, as well as a frame format and input/output frame index information. The input video streams, interactive graphics and background images are processed individually and mixed to generate an output video stream.
|
