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Code Issues Releases Activity

ARMv6 optimised sse16

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Originally committed as revision 21703 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-02-09 16:13:45 +00:00
parent 3132614305
commit 0c28474c92
2 changed files with 56 additions and 0 deletions
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51
libavcodec/arm/dsputil_armv6.S
View File

@ -513,3 +513,54 @@ function ff_pix_abs8_armv6, export=1
add r0, r0, lr
pop {r4-r9, pc}
.endfunc
function ff_sse16_armv6, export=1
ldr r12, [sp]
push {r4-r9, lr}
mov r0, #0
1:
ldrd r4, r5, [r1]
ldr r8, [r2]
uxtb16 lr, r4
uxtb16 r4, r4, ror #8
uxtb16 r9, r8
uxtb16 r8, r8, ror #8
ldr r7, [r2, #4]
usub16 lr, lr, r9
usub16 r4, r4, r8
smlad r0, lr, lr, r0
uxtb16 r6, r5
uxtb16 lr, r5, ror #8
uxtb16 r8, r7
uxtb16 r9, r7, ror #8
smlad r0, r4, r4, r0
ldrd r4, r5, [r1, #8]
usub16 r6, r6, r8
usub16 r8, lr, r9
ldr r7, [r2, #8]
smlad r0, r6, r6, r0
uxtb16 lr, r4
uxtb16 r4, r4, ror #8
uxtb16 r9, r7
uxtb16 r7, r7, ror #8
smlad r0, r8, r8, r0
ldr r8, [r2, #12]
usub16 lr, lr, r9
usub16 r4, r4, r7
smlad r0, lr, lr, r0
uxtb16 r6, r5
uxtb16 r5, r5, ror #8
uxtb16 r9, r8
uxtb16 r8, r8, ror #8
smlad r0, r4, r4, r0
usub16 r6, r6, r9
usub16 r5, r5, r8
smlad r0, r6, r6, r0
add r1, r1, r3
add r2, r2, r3
subs r12, r12, #1
smlad r0, r5, r5, r0
bgt 1b
pop {r4-r9, pc}
.endfunc

5
libavcodec/arm/dsputil_init_armv6.c
View File

@ -64,6 +64,9 @@ int ff_pix_abs16_y2_armv6(void *s, uint8_t *blk1, uint8_t *blk2,
int ff_pix_abs8_armv6(void *s, uint8_t *blk1, uint8_t *blk2,
int line_size, int h);
int ff_sse16_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 ||
@ -107,4 +110,6 @@ void av_cold ff_dsputil_init_armv6(DSPContext* c, AVCodecContext *avctx)
c->sad[0] = ff_pix_abs16_armv6;
c->sad[1] = ff_pix_abs8_armv6;
c->sse[0] = ff_sse16_armv6;
}