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png: add SSE2 version for add_bytes_l2.

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This commit is contained in:
Ronald S. Bultje 2012-01-27 23:23:05 +08:00
parent 59f474b49d
commit f91c4b7824
2 changed files with 26 additions and 0 deletions
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6
libavcodec/x86/pngdsp-init.c
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@ -29,16 +29,22 @@ void ff_add_png_paeth_prediction_ssse3(uint8_t *dst, uint8_t *src,
uint8_t *top, int w, int bpp);
void ff_add_bytes_l2_mmx (uint8_t *dst, uint8_t *src1,
uint8_t *src2, int w);
void ff_add_bytes_l2_sse2(uint8_t *dst, uint8_t *src1,
uint8_t *src2, int w);
void ff_pngdsp_init_x86(PNGDSPContext *dsp)
{
#if HAVE_YASM
int flags = av_get_cpu_flags();
#if ARCH_X86_32
if (flags & AV_CPU_FLAG_MMX)
dsp->add_bytes_l2 = ff_add_bytes_l2_mmx;
#endif
if (flags & AV_CPU_FLAG_MMX2)
dsp->add_paeth_prediction = ff_add_png_paeth_prediction_mmx2;
if (flags & AV_CPU_FLAG_SSE2)
dsp->add_bytes_l2 = ff_add_bytes_l2_sse2;
if (flags & AV_CPU_FLAG_SSSE3)
dsp->add_paeth_prediction = ff_add_png_paeth_prediction_ssse3;
#endif

20
libavcodec/x86/pngdsp.asm
View File

@ -53,6 +53,21 @@ cglobal add_bytes_l2, 4, 6, %1, dst, src1, src2, wa, w, i
cmp iq, waq
jl .loop_v
%if mmsize == 16
; vector loop
mov wq, waq
and waq, ~7
jmp .end_l
.loop_l:
movq mm0, [src1q+iq]
paddb mm0, [src2q+iq]
movq [dstq+iq ], mm0
add iq, 8
.end_l:
cmp iq, waq
jl .loop_l
%endif
; scalar loop for leftover
jmp .end_s
.loop_s:
@ -66,8 +81,13 @@ cglobal add_bytes_l2, 4, 6, %1, dst, src1, src2, wa, w, i
REP_RET
%endmacro
%if ARCH_X86_32
INIT_MMX mmx
ADD_BYTES_FN 0
%endif
INIT_XMM sse2
ADD_BYTES_FN 2
%macro ADD_PAETH_PRED_FN 1
cglobal add_png_paeth_prediction, 5, 7, %1, dst, src, top, w, bpp, end, cntr