Interface and related methods for reducing source accesses in a development system

• US 7,581,185 B2
• Filed: 12/26/2003
• Issued: 08/25/2009
• Est. Priority Date: 12/06/2000
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Rudolph, Eric H., Miller, Daniel J.
• Primary Examiner(s): Huynh; Ba
• Application Number:
  US10/746,159
• Publication Number:
  US 20040135803A1
• Time in Patent Office: 2,069 Days
• Field of Search: 715/716, 715/717, 715719-726, 715730-732
• US Class Current: 715/723
• CPC Class Codes: G11B 27/031 Electronic editing of digitised analogue information signals, e.g. audio or video signals
• CPC Class Codes: G11B 27/034 on discs G11B27/036, G11B27/038 take precedence

Abstract

A method of generating a filter graph of a development project is presented comprising identifying a plurality of source clips comprising the development project, wherein each source clip represents an access to a source, and combining two or more accesses for two or more source clips into a single access if the two or more source clips satisfy one or more criteria.

Claims

1. A computer-implemented method of generating a development project comprising computer instructions executable on a processor, the method comprising:

identifying a plurality of source clips comprising the development project, wherein each source clip represents an access to a source;

analyzing each of a plurality of source calls to identify calls to a common source to combine one or more source clip access wherever possible, wherein the analyzing is performed by a rendering engine of the development project;

replacing two or more source clip accesses with a single access, wherein the replacing is performed by the render engine completing a programming grid, wherein the programming grid identifies one or more source clips in the development project according to a project time;

dynamically generating a filter graph representation of the development project, wherein the filter graph representation comprises one or more information fields detailing a relationship between a source clip and a track;

assigning a track identifier to the track to uniquely identify the track within the context of the filter graph, wherein the track identifier is utilized to represent the source clip and comprises at least a source identifier; and

utilizing a source time field to denote a portion of the source required to support the execution of the development project.

2. A method according to claim 1, wherein the one or more criteria include one or more of the clips are source time aligned, the clips are project time aligned, and the clips will share a common processing chain.

3. A method according to claim 2, wherein to be source time aligned, the two clips are adjacent to one another in the source.

4. A method according to claim 2, wherein to be project time aligned, a request for the two clips must appear adjacent to one another in the development project.

5. A method according to claim 2, wherein to share a common processing chain, the two clips must contain identical media types requiring identical pre-processing by the development project.

6. A storage medium comprising a plurality of executable instructions which, when executed, implement a method according to claim 1.

7. A computing system comprising:

a storage medium comprising a plurality of executable instructions; and

an execution unit, coupled to the storage medium, to execute at least a subset of the plurality of executable instructions to implement a method according to claim 1.

8. A computer-implemented method of generating a development project comprising computer instructions executable on a processor, the method comprising:

identifying a plurality of source clips comprising the development project, wherein each source clip represents an access to a source;

combining two or more accesses for two or more source clips from one or more sources into a single access if the two or more source clips satisfy one or more criteria, wherein one or more criteria comprises the source clips must occur next to one another in a project, the source clips appear next to one another in the source, or the source clips must share a common processing chain, and further comprising;

dynamically generating a filter graph representation of the development project based at least in part on a programming grid, wherein a number of invoked instances of the source is reduced by combining source accesses where possible, and wherein the filter graph representation comprises one or more information fields detailing the relationship between the source clip and a track; and

assigning each track an identifier to uniquely identify the track within the context of the filter graph.

9. A method according to claim 8, wherein if the clips do not satisfy the one or more criteria, a render engine will generate a separate source chain for each of the uncombinable accesses, requiring a separate simultaneous instances of the source to be invoked with in the filter graph.