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Code Issues Releases Activity

ARMv6 optimised pix_abs8

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Originally committed as revision 21700 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-02-09 16:13:34 +00:00
parent 74cc33c235
commit d2578ff9f1
2 changed files with 36 additions and 0 deletions
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30
libavcodec/arm/dsputil_armv6.S
View File

@ -428,3 +428,33 @@ function ff_pix_abs16_y2_armv6, export=1
pop {r4-r11, pc}
.endfunc
function ff_pix_abs8_armv6, export=1
pld [r2, r3]
ldr r12, [sp]
push {r4-r9, lr}
mov r0, #0
mov lr, #0
ldrd r4, r5, [r1], r3
1:
subs r12, r12, #2
ldr r7, [r2, #4]
ldr r6, [r2], r3
ldrd r8, r9, [r1], r3
usada8 r0, r4, r6, r0
pld [r2, r3]
usada8 lr, r5, r7, lr
ldr r7, [r2, #4]
ldr r6, [r2], r3
beq 2f
ldrd r4, r5, [r1], r3
usada8 r0, r8, r6, r0
pld [r2, r3]
usada8 lr, r9, r7, lr
b 1b
2:
usada8 r0, r8, r6, r0
usada8 lr, r9, r7, lr
add r0, r0, lr
pop {r4-r9, pc}
.endfunc

6
libavcodec/arm/dsputil_init_armv6.c
View File

@ -57,6 +57,9 @@ int ff_pix_abs16_x2_armv6(void *s, uint8_t *blk1, uint8_t *blk2,
int ff_pix_abs16_y2_armv6(void *s, uint8_t *blk1, uint8_t *blk2,
int line_size, int h);
int ff_pix_abs8_armv6(void *s, uint8_t *blk1, uint8_t *blk2,
int line_size, int h);
void av_cold ff_dsputil_init_armv6(DSPContext* c, AVCodecContext *avctx)
{
if (!avctx->lowres && (avctx->idct_algo == FF_IDCT_AUTO ||
@ -94,5 +97,8 @@ void av_cold ff_dsputil_init_armv6(DSPContext* c, AVCodecContext *avctx)
c->pix_abs[0][1] = ff_pix_abs16_x2_armv6;
c->pix_abs[0][2] = ff_pix_abs16_y2_armv6;
c->pix_abs[1][0] = ff_pix_abs8_armv6;
c->sad[0] = ff_pix_abs16_armv6;
c->sad[1] = ff_pix_abs8_armv6;
}