On Aug 23, 2006, at 11:50 AM, Norman Palardy wrote:
On Aug 23, 2006, at 1:10 AM, Patrick Cusack wrote:
I have a bunch of 24-bit audio files that are represented in two's
complement format. I am analyzing the audio files.
1) Is there a way to grab 24 bit (3 integers) at a time instead of
unrolling the data into a memoryblock a byte at a time? There are
byte, short, long binarysteam.read methods, but nothing for 24 bits.
Sure ... read 1 long value with the offset such that you get the 3
bytes of interest
You may need to clear 1 byte then read the long
The first 24 bits would be handled special
dim i as int32
dim offset as integer
if offset = 0 then
i = mb.byte(offset) * 256 * 256 + mb.byte(offset+1) * 256 +
mb.byte(offset+2)
offset = 2
else
mb.byte(offset) = 0
i = mb.long(offset)
offset = offset + 3
end if
or something very close to this (coded in an email so it's only
going to be close)
or i = Bitwise.BitAnd(mb.Long(offset), &00ffffff)
or maybe you could use ColorValue(offset, 24).
Charles Yeomans
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