QuickTime 4 Reference

Supporting 64-bit File Sizes and Offsets

QuickTime 4 supports 64-bit file sizes and offsets. Four new functions have been added to the graphics importer API. Each is a 64-bit analog of an original 32-bit function. The base graphics importer's implementation of some 32-bit functions have been modified to call the 64-bit version. (They may return fileOffsetTooBigErr in the event that a 64-bit value cannot be converted to a 32-bit value.) Applications and format-specific importers can call either version of each function.

The following functions are new to QuickTime 4:

GraphicsImportGetDataOffsetAndSize64
GraphicsImportReadData64
GraphicsImportSetDataReferenceOffsetAndLimit64
GraphicsImportGetDataReferenceOffsetAndLimit64