mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-26 13:00:33 +00:00
e5c9de2ab7
Provide MMX, SSE2 and SSSE3 versions, with a fast-path when the weights are multiples of 512 (which is often the case when the values round up nicely). *_TIMER report for the 16x16 and 8x8 cases: C: 9015 decicycles in 16, 524257 runs, 31 skips 2656 decicycles in 8, 524271 runs, 17 skips MMX: 4156 decicycles in 16, 262090 runs, 54 skips 1206 decicycles in 8, 262131 runs, 13 skips MMX on fast-path: 2760 decicycles in 16, 524222 runs, 66 skips 995 decicycles in 8, 524252 runs, 36 skips SSE2: 2163 decicycles in 16, 262131 runs, 13 skips 832 decicycles in 8, 262137 runs, 7 skips SSE2 with fast path: 1783 decicycles in 16, 524276 runs, 12 skips 711 decicycles in 8, 524283 runs, 5 skips SSSE3: 2117 decicycles in 16, 262136 runs, 8 skips 814 decicycles in 8, 262143 runs, 1 skips SSSE3 with fast path: 1315 decicycles in 16, 524285 runs, 3 skips 578 decicycles in 8, 524286 runs, 2 skips This means around a 4% speedup for some sequences. Signed-off-by: Diego Biurrun <diego@biurrun.de>
208 lines
4.6 KiB
NASM
208 lines
4.6 KiB
NASM
;******************************************************************************
|
|
;* MMX/SSE2-optimized functions for the RV40 decoder
|
|
;* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
|
|
;*
|
|
;* This file is part of Libav.
|
|
;*
|
|
;* Libav is free software; you can redistribute it and/or
|
|
;* modify it under the terms of the GNU Lesser General Public
|
|
;* License as published by the Free Software Foundation; either
|
|
;* version 2.1 of the License, or (at your option) any later version.
|
|
;*
|
|
;* Libav is distributed in the hope that it will be useful,
|
|
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
;* Lesser General Public License for more details.
|
|
;*
|
|
;* You should have received a copy of the GNU Lesser General Public
|
|
;* License along with Libav; if not, write to the Free Software
|
|
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
;******************************************************************************
|
|
|
|
%include "x86inc.asm"
|
|
%include "x86util.asm"
|
|
|
|
SECTION_RODATA
|
|
|
|
align 16
|
|
shift_round: times 8 dw 1 << (16 - 6)
|
|
cextern pw_16
|
|
|
|
SECTION .text
|
|
|
|
; %1=5bits weights?, %2=dst %3=src1 %4=src3 %5=stride if sse2
|
|
%macro RV40_WCORE 4-5
|
|
movh m4, [%3 + 0]
|
|
movh m5, [%4 + 0]
|
|
%if %0 == 4
|
|
%define OFFSET mmsize / 2
|
|
%else
|
|
; 8x8 block and sse2, stride was provided
|
|
%define OFFSET %5
|
|
%endif
|
|
movh m6, [%3 + OFFSET]
|
|
movh m7, [%4 + OFFSET]
|
|
|
|
%if %1 == 0
|
|
; 14bits weights
|
|
punpcklbw m4, m0
|
|
punpcklbw m5, m0
|
|
punpcklbw m6, m0
|
|
punpcklbw m7, m0
|
|
|
|
psllw m4, 7
|
|
psllw m5, 7
|
|
psllw m6, 7
|
|
psllw m7, 7
|
|
pmulhw m4, m3
|
|
pmulhw m5, m2
|
|
pmulhw m6, m3
|
|
pmulhw m7, m2
|
|
|
|
paddw m4, m5
|
|
paddw m6, m7
|
|
%else
|
|
; 5bits weights
|
|
%if cpuflag(ssse3)
|
|
punpcklbw m4, m5
|
|
punpcklbw m6, m7
|
|
|
|
pmaddubsw m4, m3
|
|
pmaddubsw m6, m3
|
|
%else
|
|
punpcklbw m4, m0
|
|
punpcklbw m5, m0
|
|
punpcklbw m6, m0
|
|
punpcklbw m7, m0
|
|
|
|
pmullw m4, m3
|
|
pmullw m5, m2
|
|
pmullw m6, m3
|
|
pmullw m7, m2
|
|
paddw m4, m5
|
|
paddw m6, m7
|
|
%endif
|
|
|
|
%endif
|
|
|
|
; bias and shift down
|
|
%if cpuflag(ssse3)
|
|
pmulhrsw m4, m1
|
|
pmulhrsw m6, m1
|
|
%else
|
|
paddw m4, m1
|
|
paddw m6, m1
|
|
psrlw m4, 5
|
|
psrlw m6, 5
|
|
%endif
|
|
|
|
packuswb m4, m6
|
|
%if %0 == 5
|
|
; Only called for 8x8 blocks and sse2
|
|
movh [%2 + 0], m4
|
|
movhps [%2 + %5], m4
|
|
%else
|
|
mova [%2], m4
|
|
%endif
|
|
%endmacro
|
|
|
|
|
|
%macro MAIN_LOOP 2
|
|
%if mmsize == 8
|
|
RV40_WCORE %2, r0, r1, r2
|
|
%if %1 == 16
|
|
RV40_WCORE %2, r0 + 8, r1 + 8, r2 + 8
|
|
%endif
|
|
|
|
; Prepare for next loop
|
|
add r0, r5
|
|
add r1, r5
|
|
add r2, r5
|
|
%else
|
|
%ifidn %1, 8
|
|
RV40_WCORE %2, r0, r1, r2, r5
|
|
; Prepare 2 next lines
|
|
lea r0, [r0 + 2 * r5]
|
|
lea r1, [r1 + 2 * r5]
|
|
lea r2, [r2 + 2 * r5]
|
|
%else
|
|
RV40_WCORE %2, r0, r1, r2
|
|
; Prepare single next line
|
|
add r0, r5
|
|
add r1, r5
|
|
add r2, r5
|
|
%endif
|
|
%endif
|
|
|
|
dec r6
|
|
%endmacro
|
|
|
|
; rv40_weight_func_%1(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w1, int w2, int stride)
|
|
; %1=size %2=num of xmm regs
|
|
%macro RV40_WEIGHT 2
|
|
cglobal rv40_weight_func_%1, 6, 7, %2
|
|
%if cpuflag(ssse3)
|
|
mova m1, [shift_round]
|
|
%else
|
|
mova m1, [pw_16]
|
|
%endif
|
|
pxor m0, m0
|
|
mov r6, r3
|
|
or r6, r4
|
|
; The weights are FP0.14 notation of fractions depending on pts.
|
|
; For timebases without rounding error (i.e. PAL), the fractions
|
|
; can be simplified, and several operations can be avoided.
|
|
; Therefore, we check here whether they are multiples of 2^9 for
|
|
; those simplifications to occur.
|
|
and r6, 0x1FF
|
|
; Set loop counter and increments
|
|
%if mmsize == 8
|
|
mov r6, %1
|
|
%else
|
|
mov r6, (%1 * %1) / mmsize
|
|
%endif
|
|
|
|
; Use result of test now
|
|
jz .loop_512
|
|
movd m2, r3
|
|
movd m3, r4
|
|
SPLATW m2, m2
|
|
SPLATW m3, m3
|
|
|
|
.loop:
|
|
MAIN_LOOP %1, 0
|
|
jnz .loop
|
|
REP_RET
|
|
|
|
; Weights are multiple of 512, which allows some shortcuts
|
|
.loop_512:
|
|
sar r3, 9
|
|
sar r4, 9
|
|
movd m2, r3
|
|
movd m3, r4
|
|
%if cpuflag(ssse3)
|
|
punpcklbw m3, m2
|
|
SPLATW m3, m3
|
|
%else
|
|
SPLATW m2, m2
|
|
SPLATW m3, m3
|
|
%endif
|
|
.loop2:
|
|
MAIN_LOOP %1, 1
|
|
jnz .loop2
|
|
REP_RET
|
|
|
|
%endmacro
|
|
|
|
INIT_MMX mmx
|
|
RV40_WEIGHT 8, 0
|
|
RV40_WEIGHT 16, 0
|
|
|
|
INIT_XMM sse2
|
|
RV40_WEIGHT 8, 8
|
|
RV40_WEIGHT 16, 8
|
|
|
|
INIT_XMM ssse3
|
|
RV40_WEIGHT 8, 8
|
|
RV40_WEIGHT 16, 8
|