Accessing Image Data 'directly'

hi,

 

currently i'm using streamutil::createpointerstreamwrite in conjunction snapshotutils export-function fill buffer of char* encoded image data (tiff) further processing in memory. works need guidance improve performance. couple of questions:

 

1) there way directly address raw, unencoded image data stored in kind of multi-array representation wxhxcolorch?

maybe of own 'format class?

 

2) how can determine the number of chars / bytes written buffer exportimagetotiff() example?

 

3) images differ in size. there clever way pre-allocate char* buffer?

 

3) implemented snapshotutils (like in 1 of sdk sample) not snapshotutilsex because latter doesn't honor overprinting flag during testing  seems (file export in low quality). snapshotutils (without ex) isn't mentioned in sdk's docu. reason? obsolete?

 

i appreciate advice things right direction. thanks.

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