Closing a video stream object

• US 8,176,500 B2
• Filed: 01/03/2011
• Issued: 05/08/2012
• Est. Priority Date: 04/15/2002
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Estrop, Stephen J.
• Primary Examiner(s): Ho, Andy
• Application Number:
  US12/983,808
• Publication Number:
  US 20110102672A1
• Time in Patent Office: 491 Days
• Field of Search: 719/310, 719/321, 719/328, 719/330
• US Class Current: 719/310
• CPC Class Codes: G09G 2310/0229 De-interlacing
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04N 7/012 Conversion between an interlaced and a progressive signal for graphics images G09G2310/0229
• CPC Class Codes: H04N 7/0122 the input and the output signals having different aspect ratios
• CPC Class Codes: H04N 9/643 Hue control means, e.g. flesh tone control

Abstract

Techniques are provided for facilitating processing of interlaced video images for progressive video displays. A method receives from a renderer a query for a graphics device driver to a graphics processing capability that can be performed by an associated graphics device in de-interlacing video data, communicating the query to the graphics device driver, receiving from the graphics device driver a response to the query that identifies the graphics processing capabilities to the renderer, and communicating the response to the renderer. The method includes receiving from the renderer a further query for the graphics device driver to at least one input requirement associated with the identified graphics processing capability, communicating the further query to the graphics device driver, receiving from the graphics device driver a further response to the further query that identifies the input requirement(s) associated with the graphics processing capability, and communicating the further response to the renderer.

Claims

1. A method for closing a video stream object between a rendering process and a graphics device having an associated graphics device driver, the method comprising:

issuing, by a rendering process, a close stream call having at least one call parameter comprising a stream identifier corresponding to a previously established video stream object; and

receiving, by a supporting process, said close stream call and parsing said close stream call to retrieve said at least one call parameter, and causing said supporting process to close said previously established video stream object.

2. The method as recited in claim 1, wherein said supporting process includes at least one application programming interface (API).

3. A computer-readable medium having computer-executable instructions for causing at least one processing unit to perform acts comprising:

issuing, by a rendering process, a close stream call having at least one call parameter comprising a stream identifier corresponding to a previously established video stream object; and

receiving, by a supporting process, said close stream call and parsing said close stream call to retrieve said at least one call parameter, and causing said supporting process to close said previously established video stream object.

4. The computer-readable medium as recited in claim 3, wherein said supporting process includes at least one application programming interface (API).