Club CDFreaks - Knowledge is Power - View Single Post - Difference between Data Type 2 (packed) and Type 3 (raw) writing?

*RichMan* · 04-02-2006

Not sure if I'm in the right direction here, but think of it this way. If you start with 4 bytes of RAW sub (P-W) and you pack them (R-W), you will have 3 bytes in the end... (you get rid of P and Q and then make 'bytes' out of what bits are left).

P1 Q1 R1 S1 T1 U1 V1 W1 byte1
P2 Q2 R2 S2 T2 U2 V2 W2 byte2
P3 Q3 R3 S3 T3 U3 V3 W3 byte3
P4 Q4 R4 S4 T4 U4 V4 W4 byte4

becomes (after stripping the P and Q and packing)

R1 S1 T1 U1 V1 W1 R2 S2 byte1
T2 U2 V2 W2 R3 S3 T3 U3 byte2
V3 W3 R4 S4 T4 U4 V4 W4 byte3

sfritzinger, is this what you were asking?

Truman, is this what you already tried to say/point to? If so...sorry.

04-02-2006	#4 (permalink)
RichMan CD Freaks Expert Join Date: Jan 2004 Posts: 592	Re: Difference between Data Type 2 (packed) and Type 3 (raw) writing? Not sure if I'm in the right direction here, but think of it this way. If you start with 4 bytes of RAW sub (P-W) and you pack them (R-W), you will have 3 bytes in the end... (you get rid of P and Q and then make 'bytes' out of what bits are left). P1 Q1 R1 S1 T1 U1 V1 W1 byte1 P2 Q2 R2 S2 T2 U2 V2 W2 byte2 P3 Q3 R3 S3 T3 U3 V3 W3 byte3 P4 Q4 R4 S4 T4 U4 V4 W4 byte4 becomes (after stripping the P and Q and packing) R1 S1 T1 U1 V1 W1 R2 S2 byte1 T2 U2 V2 W2 R3 S3 T3 U3 byte2 V3 W3 R4 S4 T4 U4 V4 W4 byte3 sfritzinger, is this what you were asking? Truman, is this what you already tried to say/point to? If so...sorry.