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Oops. mvn is one's-complement, not two's. Correct the YUV calculation.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14184 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Michael Sevakis 2007-08-04 20:36:22 +00:00
parent 88bdae20e3
commit d25dc33453
2 changed files with 4 additions and 4 deletions
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4
firmware/target/arm/s3c2440/gigabeat-fx/lcd-as-meg-fx.S
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@ -144,9 +144,9 @@ lcd_write_yuv420_lines:
sub r8, r8, #128 @ Cb -= 128 sub r8, r8, #128 @ Cb -= 128
sub r11, r11, #128 @ Cr -= 128 sub r11, r11, #128 @ Cr -= 128
@ @
mvn r2, #24 @ compute guv mvn r2, #23 @ compute guv
mul r10, r2, r8 @ r10 = Cb*-24 mul r10, r2, r8 @ r10 = Cb*-24
mvn r2, #51 @ mvn r2, #50 @
mla r10, r2, r11, r10 @ r10 = r10 + Cr*-51 mla r10, r2, r11, r10 @ r10 = r10 + Cr*-51
@ @
mov r2, #101 @ compute rv mov r2, #101 @ compute rv

4
firmware/target/arm/sandisk/sansa-e200/lcd-as-e200.S
View file

@ -144,9 +144,9 @@ lcd_write_yuv420_lines:
sub r8, r8, #128 @ Cb -= 128 sub r8, r8, #128 @ Cb -= 128
sub r11, r11, #128 @ Cr -= 128 sub r11, r11, #128 @ Cr -= 128
@ @
mvn r2, #24 @ compute guv mvn r2, #23 @ compute guv
mul r10, r2, r8 @ r10 = Cb*-24 mul r10, r2, r8 @ r10 = Cb*-24
mvn r2, #51 @ mvn r2, #50 @
mla r10, r2, r11, r10 @ r10 = r10 + Cr*-51 mla r10, r2, r11, r10 @ r10 = r10 + Cr*-51
@ @
mov r2, #101 @ compute rv mov r2, #101 @ compute rv