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Partially revert "Fix png decoding on x86."

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This partially reverts commit 58dabf7bf2.
It is no longer necessary to use unaligned mov.
The swapped mov argument fix remains though.
This commit is contained in:
Reimar Döffinger 2012-02-10 21:24:27 +01:00
parent 3fe00cac71
commit 394d41ee30
2 changed files with 10 additions and 10 deletions
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4
libavcodec/pngdsp.h
View File

@ -26,8 +26,8 @@
typedef struct PNGDSPContext { typedef struct PNGDSPContext {
void (*add_bytes_l2)(uint8_t *dst /* align 16 */, void (*add_bytes_l2)(uint8_t *dst /* align 16 */,
uint8_t *src1, uint8_t *src1 /* align 16 */,
uint8_t *src2, int w); uint8_t *src2 /* align 16 */, int w);
/* this might write to dst[w] */ /* this might write to dst[w] */
void (*add_paeth_prediction)(uint8_t *dst, uint8_t *src, void (*add_paeth_prediction)(uint8_t *dst, uint8_t *src,

16
libavcodec/x86/pngdsp.asm
View File

@ -43,12 +43,12 @@ cglobal add_bytes_l2, 4, 6, %1, dst, src1, src2, wa, w, i
and waq, ~(mmsize*2-1) and waq, ~(mmsize*2-1)
jmp .end_v jmp .end_v
.loop_v: .loop_v:
movu m0, [src2q+iq] mova m0, [src1q+iq]
movu m1, [src2q+iq+mmsize] mova m1, [src1q+iq+mmsize]
paddb m0, [src1q+iq] paddb m0, [src2q+iq]
paddb m1, [src1q+iq+mmsize] paddb m1, [src2q+iq+mmsize]
movu [dstq+iq ], m0 mova [dstq+iq ], m0
movu [dstq+iq+mmsize], m1 mova [dstq+iq+mmsize], m1
add iq, mmsize*2 add iq, mmsize*2
.end_v: .end_v:
cmp iq, waq cmp iq, waq
@ -60,8 +60,8 @@ cglobal add_bytes_l2, 4, 6, %1, dst, src1, src2, wa, w, i
and waq, ~7 and waq, ~7
jmp .end_l jmp .end_l
.loop_l: .loop_l:
movq mm0, [src2q+iq] movq mm0, [src1q+iq]
paddb mm0, [src1q+iq] paddb mm0, [src2q+iq]
movq [dstq+iq ], mm0 movq [dstq+iq ], mm0
add iq, 8 add iq, 8
.end_l: .end_l: