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https://git.ffmpeg.org/ffmpeg.git
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bbe95f7353
From x86inc: > On AMD cpus <=K10, an ordinary ret is slow if it immediately follows either > a branch or a branch target. So switch to a 2-byte form of ret in that case. > We can automatically detect "follows a branch", but not a branch target. > (SSSE3 is a sufficient condition to know that your cpu doesn't have this problem.) x86inc can automatically determine whether to use REP_RET rather than REP in most of these cases, so impact is minimal. Additionally, a few REP_RETs were used unnecessary, despite the return being nowhere near a branch. The only CPUs affected were AMD K10s, made between 2007 and 2011, 16 years ago and 12 years ago, respectively. In the future, everyone involved with x86inc should consider dropping REP_RETs altogether.
657 lines
17 KiB
NASM
657 lines
17 KiB
NASM
;******************************************************************************
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;* MMX/SSSE3-optimized functions for H.264 chroma MC
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;* Copyright (c) 2005 Zoltan Hidvegi <hzoli -a- hzoli -d- com>,
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;* 2005-2008 Loren Merritt
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;*
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;* This file is part of FFmpeg.
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;*
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;* FFmpeg is free software; you can redistribute it and/or
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;* modify it under the terms of the GNU Lesser General Public
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;* License as published by the Free Software Foundation; either
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;* version 2.1 of the License, or (at your option) any later version.
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;*
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;* FFmpeg is distributed in the hope that it will be useful,
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;* Lesser General Public License for more details.
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;*
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;* You should have received a copy of the GNU Lesser General Public
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;* License along with FFmpeg; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;******************************************************************************
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%include "libavutil/x86/x86util.asm"
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SECTION_RODATA
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rnd_rv40_2d_tbl: times 4 dw 0
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times 4 dw 16
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times 4 dw 32
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times 4 dw 16
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times 4 dw 32
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times 4 dw 28
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times 4 dw 32
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times 4 dw 28
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times 4 dw 0
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times 4 dw 32
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times 4 dw 16
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times 4 dw 32
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times 4 dw 32
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times 4 dw 28
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times 4 dw 32
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times 4 dw 28
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rnd_rv40_1d_tbl: times 4 dw 0
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times 4 dw 2
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times 4 dw 4
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times 4 dw 2
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times 4 dw 4
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times 4 dw 3
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times 4 dw 4
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times 4 dw 3
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times 4 dw 0
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times 4 dw 4
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times 4 dw 2
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times 4 dw 4
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times 4 dw 4
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times 4 dw 3
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times 4 dw 4
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times 4 dw 3
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cextern pw_3
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cextern pw_4
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cextern pw_8
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pw_28: times 8 dw 28
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cextern pw_32
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cextern pw_64
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SECTION .text
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%macro mv0_pixels_mc8 0
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lea r4, [r2*2 ]
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.next4rows:
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movq mm0, [r1 ]
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movq mm1, [r1+r2]
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add r1, r4
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CHROMAMC_AVG mm0, [r0 ]
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CHROMAMC_AVG mm1, [r0+r2]
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movq [r0 ], mm0
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movq [r0+r2], mm1
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add r0, r4
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movq mm0, [r1 ]
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movq mm1, [r1+r2]
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add r1, r4
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CHROMAMC_AVG mm0, [r0 ]
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CHROMAMC_AVG mm1, [r0+r2]
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movq [r0 ], mm0
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movq [r0+r2], mm1
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add r0, r4
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sub r3d, 4
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jne .next4rows
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%endmacro
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%macro chroma_mc8_mmx_func 2-3
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%ifidn %2, rv40
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%ifdef PIC
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%define rnd_1d_rv40 r8
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%define rnd_2d_rv40 r8
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%define extra_regs 2
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%else ; no-PIC
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%define rnd_1d_rv40 rnd_rv40_1d_tbl
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%define rnd_2d_rv40 rnd_rv40_2d_tbl
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%define extra_regs 1
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%endif ; PIC
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%else
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%define extra_regs 0
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%endif ; rv40
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; void ff_put/avg_h264_chroma_mc8_*(uint8_t *dst /* align 8 */,
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; const uint8_t *src /* align 1 */,
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; ptrdiff_t stride, int h, int mx, int my)
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cglobal %1_%2_chroma_mc8%3, 6, 7 + extra_regs, 0
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mov r6d, r5d
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or r6d, r4d
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jne .at_least_one_non_zero
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; mx == 0 AND my == 0 - no filter needed
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mv0_pixels_mc8
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RET
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.at_least_one_non_zero:
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%ifidn %2, rv40
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%if ARCH_X86_64
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mov r7, r5
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and r7, 6 ; &~1 for mx/my=[0,7]
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lea r7, [r7*4+r4]
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sar r7d, 1
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%define rnd_bias r7
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%define dest_reg r0
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%else ; x86-32
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mov r0, r5
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and r0, 6 ; &~1 for mx/my=[0,7]
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lea r0, [r0*4+r4]
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sar r0d, 1
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%define rnd_bias r0
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%define dest_reg r5
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%endif
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%else ; vc1, h264
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%define rnd_bias 0
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%define dest_reg r0
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%endif
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test r5d, r5d
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mov r6, 1
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je .my_is_zero
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test r4d, r4d
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mov r6, r2 ; dxy = x ? 1 : stride
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jne .both_non_zero
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.my_is_zero:
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; mx == 0 XOR my == 0 - 1 dimensional filter only
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or r4d, r5d ; x + y
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%ifidn %2, rv40
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%ifdef PIC
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lea r8, [rnd_rv40_1d_tbl]
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%endif
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%if ARCH_X86_64 == 0
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mov r5, r0m
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%endif
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%endif
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movd m5, r4d
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movq m4, [pw_8]
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movq m6, [rnd_1d_%2+rnd_bias*8] ; mm6 = rnd >> 3
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punpcklwd m5, m5
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punpckldq m5, m5 ; mm5 = B = x
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pxor m7, m7
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psubw m4, m5 ; mm4 = A = 8-x
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.next1drow:
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movq m0, [r1 ] ; mm0 = src[0..7]
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movq m2, [r1+r6] ; mm1 = src[1..8]
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movq m1, m0
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movq m3, m2
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punpcklbw m0, m7
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punpckhbw m1, m7
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punpcklbw m2, m7
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punpckhbw m3, m7
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pmullw m0, m4 ; [mm0,mm1] = A * src[0..7]
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pmullw m1, m4
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pmullw m2, m5 ; [mm2,mm3] = B * src[1..8]
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pmullw m3, m5
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paddw m0, m6
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paddw m1, m6
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paddw m0, m2
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paddw m1, m3
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psrlw m0, 3
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psrlw m1, 3
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packuswb m0, m1
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CHROMAMC_AVG m0, [dest_reg]
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movq [dest_reg], m0 ; dst[0..7] = (A * src[0..7] + B * src[1..8] + (rnd >> 3)) >> 3
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add dest_reg, r2
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add r1, r2
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dec r3d
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jne .next1drow
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RET
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.both_non_zero: ; general case, bilinear
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movd m4, r4d ; x
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movd m6, r5d ; y
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%ifidn %2, rv40
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%ifdef PIC
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lea r8, [rnd_rv40_2d_tbl]
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%endif
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%if ARCH_X86_64 == 0
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mov r5, r0m
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%endif
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%endif
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mov r6, rsp ; backup stack pointer
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and rsp, ~(mmsize-1) ; align stack
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sub rsp, 16 ; AA and DD
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punpcklwd m4, m4
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punpcklwd m6, m6
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punpckldq m4, m4 ; mm4 = x words
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punpckldq m6, m6 ; mm6 = y words
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movq m5, m4
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pmullw m4, m6 ; mm4 = x * y
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psllw m5, 3
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psllw m6, 3
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movq m7, m5
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paddw m7, m6
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movq [rsp+8], m4 ; DD = x * y
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psubw m5, m4 ; mm5 = B = 8x - xy
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psubw m6, m4 ; mm6 = C = 8y - xy
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paddw m4, [pw_64]
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psubw m4, m7 ; mm4 = A = xy - (8x+8y) + 64
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pxor m7, m7
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movq [rsp ], m4
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movq m0, [r1 ] ; mm0 = src[0..7]
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movq m1, [r1+1] ; mm1 = src[1..8]
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.next2drow:
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add r1, r2
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movq m2, m0
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movq m3, m1
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punpckhbw m0, m7
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punpcklbw m1, m7
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punpcklbw m2, m7
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punpckhbw m3, m7
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pmullw m0, [rsp]
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pmullw m2, [rsp]
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pmullw m1, m5
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pmullw m3, m5
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paddw m2, m1 ; mm2 = A * src[0..3] + B * src[1..4]
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paddw m3, m0 ; mm3 = A * src[4..7] + B * src[5..8]
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movq m0, [r1]
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movq m1, m0
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punpcklbw m0, m7
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punpckhbw m1, m7
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pmullw m0, m6
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pmullw m1, m6
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paddw m2, m0
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paddw m3, m1 ; [mm2,mm3] += C * src[0..7]
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movq m1, [r1+1]
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movq m0, m1
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movq m4, m1
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punpcklbw m0, m7
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punpckhbw m4, m7
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pmullw m0, [rsp+8]
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pmullw m4, [rsp+8]
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paddw m2, m0
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paddw m3, m4 ; [mm2,mm3] += D * src[1..8]
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movq m0, [r1]
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paddw m2, [rnd_2d_%2+rnd_bias*8]
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paddw m3, [rnd_2d_%2+rnd_bias*8]
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psrlw m2, 6
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psrlw m3, 6
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packuswb m2, m3
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CHROMAMC_AVG m2, [dest_reg]
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movq [dest_reg], m2 ; dst[0..7] = ([mm2,mm3] + rnd) >> 6
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add dest_reg, r2
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dec r3d
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jne .next2drow
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mov rsp, r6 ; restore stack pointer
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RET
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%endmacro
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%macro chroma_mc4_mmx_func 2
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%define extra_regs 0
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%ifidn %2, rv40
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%ifdef PIC
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%define extra_regs 1
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%endif ; PIC
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%endif ; rv40
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cglobal %1_%2_chroma_mc4, 6, 6 + extra_regs, 0
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pxor m7, m7
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movd m2, r4d ; x
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movd m3, r5d ; y
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movq m4, [pw_8]
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movq m5, [pw_8]
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punpcklwd m2, m2
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punpcklwd m3, m3
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punpcklwd m2, m2
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punpcklwd m3, m3
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psubw m4, m2
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psubw m5, m3
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%ifidn %2, rv40
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%ifdef PIC
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lea r6, [rnd_rv40_2d_tbl]
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%define rnd_2d_rv40 r6
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%else
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%define rnd_2d_rv40 rnd_rv40_2d_tbl
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%endif
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and r5, 6 ; &~1 for mx/my=[0,7]
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lea r5, [r5*4+r4]
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sar r5d, 1
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%define rnd_bias r5
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%else ; vc1, h264
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%define rnd_bias 0
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%endif
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movd m0, [r1 ]
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movd m6, [r1+1]
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add r1, r2
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punpcklbw m0, m7
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punpcklbw m6, m7
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pmullw m0, m4
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pmullw m6, m2
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paddw m6, m0
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.next2rows:
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movd m0, [r1 ]
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movd m1, [r1+1]
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add r1, r2
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punpcklbw m0, m7
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punpcklbw m1, m7
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pmullw m0, m4
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pmullw m1, m2
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paddw m1, m0
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movq m0, m1
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pmullw m6, m5
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pmullw m1, m3
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paddw m6, [rnd_2d_%2+rnd_bias*8]
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paddw m1, m6
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psrlw m1, 6
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packuswb m1, m1
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CHROMAMC_AVG4 m1, m6, [r0]
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movd [r0], m1
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add r0, r2
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movd m6, [r1 ]
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movd m1, [r1+1]
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add r1, r2
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punpcklbw m6, m7
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punpcklbw m1, m7
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pmullw m6, m4
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pmullw m1, m2
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paddw m1, m6
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movq m6, m1
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pmullw m0, m5
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pmullw m1, m3
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paddw m0, [rnd_2d_%2+rnd_bias*8]
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paddw m1, m0
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psrlw m1, 6
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packuswb m1, m1
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CHROMAMC_AVG4 m1, m0, [r0]
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movd [r0], m1
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add r0, r2
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sub r3d, 2
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jnz .next2rows
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RET
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%endmacro
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%macro chroma_mc2_mmx_func 2
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cglobal %1_%2_chroma_mc2, 6, 7, 0
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mov r6d, r4d
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shl r4d, 16
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sub r4d, r6d
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add r4d, 8
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imul r5d, r4d ; x*y<<16 | y*(8-x)
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shl r4d, 3
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sub r4d, r5d ; x*(8-y)<<16 | (8-x)*(8-y)
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movd m5, r4d
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movd m6, r5d
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punpckldq m5, m5 ; mm5 = {A,B,A,B}
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punpckldq m6, m6 ; mm6 = {C,D,C,D}
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pxor m7, m7
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movd m2, [r1]
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punpcklbw m2, m7
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pshufw m2, m2, 0x94 ; mm0 = src[0,1,1,2]
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.nextrow:
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add r1, r2
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movq m1, m2
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pmaddwd m1, m5 ; mm1 = A * src[0,1] + B * src[1,2]
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movd m0, [r1]
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punpcklbw m0, m7
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pshufw m0, m0, 0x94 ; mm0 = src[0,1,1,2]
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movq m2, m0
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pmaddwd m0, m6
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paddw m1, [rnd_2d_%2]
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paddw m1, m0 ; mm1 += C * src[0,1] + D * src[1,2]
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psrlw m1, 6
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packssdw m1, m7
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packuswb m1, m7
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CHROMAMC_AVG4 m1, m3, [r0]
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movd r5d, m1
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mov [r0], r5w
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add r0, r2
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sub r3d, 1
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jnz .nextrow
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RET
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%endmacro
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%define rnd_1d_h264 pw_4
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%define rnd_2d_h264 pw_32
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%define rnd_1d_vc1 pw_3
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%define rnd_2d_vc1 pw_28
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%macro NOTHING 2-3
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%endmacro
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%macro DIRECT_AVG 2
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PAVGB %1, %2
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%endmacro
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%macro COPY_AVG 3
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movd %2, %3
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PAVGB %1, %2
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%endmacro
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INIT_MMX mmx
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%define CHROMAMC_AVG NOTHING
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%define CHROMAMC_AVG4 NOTHING
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chroma_mc8_mmx_func put, h264, _rnd
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chroma_mc8_mmx_func put, vc1, _nornd
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chroma_mc8_mmx_func put, rv40
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chroma_mc4_mmx_func put, h264
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chroma_mc4_mmx_func put, rv40
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INIT_MMX mmxext
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chroma_mc2_mmx_func put, h264
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%define CHROMAMC_AVG DIRECT_AVG
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%define CHROMAMC_AVG4 COPY_AVG
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chroma_mc8_mmx_func avg, h264, _rnd
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chroma_mc8_mmx_func avg, vc1, _nornd
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chroma_mc8_mmx_func avg, rv40
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chroma_mc4_mmx_func avg, h264
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chroma_mc4_mmx_func avg, rv40
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chroma_mc2_mmx_func avg, h264
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%macro chroma_mc8_ssse3_func 2-3
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cglobal %1_%2_chroma_mc8%3, 6, 7, 8
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mov r6d, r5d
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or r6d, r4d
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jne .at_least_one_non_zero
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; mx == 0 AND my == 0 - no filter needed
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mv0_pixels_mc8
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RET
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.at_least_one_non_zero:
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test r5d, r5d
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je .my_is_zero
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test r4d, r4d
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je .mx_is_zero
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; general case, bilinear
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mov r6d, r4d
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shl r4d, 8
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sub r4, r6
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mov r6, 8
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add r4, 8 ; x*288+8 = x<<8 | (8-x)
|
|
sub r6d, r5d
|
|
imul r6, r4 ; (8-y)*(x*255+8) = (8-y)*x<<8 | (8-y)*(8-x)
|
|
imul r4d, r5d ; y *(x*255+8) = y *x<<8 | y *(8-x)
|
|
|
|
movd m7, r6d
|
|
movd m6, r4d
|
|
movdqa m5, [rnd_2d_%2]
|
|
movq m0, [r1 ]
|
|
movq m1, [r1+1]
|
|
pshuflw m7, m7, 0
|
|
pshuflw m6, m6, 0
|
|
punpcklbw m0, m1
|
|
movlhps m7, m7
|
|
movlhps m6, m6
|
|
|
|
.next2rows:
|
|
movq m1, [r1+r2*1 ]
|
|
movq m2, [r1+r2*1+1]
|
|
movq m3, [r1+r2*2 ]
|
|
movq m4, [r1+r2*2+1]
|
|
lea r1, [r1+r2*2]
|
|
punpcklbw m1, m2
|
|
movdqa m2, m1
|
|
punpcklbw m3, m4
|
|
movdqa m4, m3
|
|
pmaddubsw m0, m7
|
|
pmaddubsw m1, m6
|
|
pmaddubsw m2, m7
|
|
pmaddubsw m3, m6
|
|
paddw m0, m5
|
|
paddw m2, m5
|
|
paddw m1, m0
|
|
paddw m3, m2
|
|
psrlw m1, 6
|
|
movdqa m0, m4
|
|
psrlw m3, 6
|
|
%ifidn %1, avg
|
|
movq m2, [r0 ]
|
|
movhps m2, [r0+r2]
|
|
%endif
|
|
packuswb m1, m3
|
|
CHROMAMC_AVG m1, m2
|
|
movq [r0 ], m1
|
|
movhps [r0+r2], m1
|
|
sub r3d, 2
|
|
lea r0, [r0+r2*2]
|
|
jg .next2rows
|
|
RET
|
|
|
|
.my_is_zero:
|
|
mov r5d, r4d
|
|
shl r4d, 8
|
|
add r4, 8
|
|
sub r4, r5 ; 255*x+8 = x<<8 | (8-x)
|
|
movd m7, r4d
|
|
movdqa m6, [rnd_1d_%2]
|
|
pshuflw m7, m7, 0
|
|
movlhps m7, m7
|
|
|
|
.next2xrows:
|
|
movq m0, [r1 ]
|
|
movq m1, [r1 +1]
|
|
movq m2, [r1+r2 ]
|
|
movq m3, [r1+r2+1]
|
|
punpcklbw m0, m1
|
|
punpcklbw m2, m3
|
|
pmaddubsw m0, m7
|
|
pmaddubsw m2, m7
|
|
%ifidn %1, avg
|
|
movq m4, [r0 ]
|
|
movhps m4, [r0+r2]
|
|
%endif
|
|
paddw m0, m6
|
|
paddw m2, m6
|
|
psrlw m0, 3
|
|
psrlw m2, 3
|
|
packuswb m0, m2
|
|
CHROMAMC_AVG m0, m4
|
|
movq [r0 ], m0
|
|
movhps [r0+r2], m0
|
|
sub r3d, 2
|
|
lea r0, [r0+r2*2]
|
|
lea r1, [r1+r2*2]
|
|
jg .next2xrows
|
|
RET
|
|
|
|
.mx_is_zero:
|
|
mov r4d, r5d
|
|
shl r5d, 8
|
|
add r5, 8
|
|
sub r5, r4 ; 255*y+8 = y<<8 | (8-y)
|
|
movd m7, r5d
|
|
movdqa m6, [rnd_1d_%2]
|
|
pshuflw m7, m7, 0
|
|
movlhps m7, m7
|
|
|
|
.next2yrows:
|
|
movq m0, [r1 ]
|
|
movq m1, [r1+r2 ]
|
|
movdqa m2, m1
|
|
movq m3, [r1+r2*2]
|
|
lea r1, [r1+r2*2]
|
|
punpcklbw m0, m1
|
|
punpcklbw m2, m3
|
|
pmaddubsw m0, m7
|
|
pmaddubsw m2, m7
|
|
%ifidn %1, avg
|
|
movq m4, [r0 ]
|
|
movhps m4, [r0+r2]
|
|
%endif
|
|
paddw m0, m6
|
|
paddw m2, m6
|
|
psrlw m0, 3
|
|
psrlw m2, 3
|
|
packuswb m0, m2
|
|
CHROMAMC_AVG m0, m4
|
|
movq [r0 ], m0
|
|
movhps [r0+r2], m0
|
|
sub r3d, 2
|
|
lea r0, [r0+r2*2]
|
|
jg .next2yrows
|
|
RET
|
|
%endmacro
|
|
|
|
%macro chroma_mc4_ssse3_func 2
|
|
cglobal %1_%2_chroma_mc4, 6, 7, 0
|
|
mov r6, r4
|
|
shl r4d, 8
|
|
sub r4d, r6d
|
|
mov r6, 8
|
|
add r4d, 8 ; x*288+8
|
|
sub r6d, r5d
|
|
imul r6d, r4d ; (8-y)*(x*255+8) = (8-y)*x<<8 | (8-y)*(8-x)
|
|
imul r4d, r5d ; y *(x*255+8) = y *x<<8 | y *(8-x)
|
|
|
|
movd m7, r6d
|
|
movd m6, r4d
|
|
movq m5, [pw_32]
|
|
movd m0, [r1 ]
|
|
pshufw m7, m7, 0
|
|
punpcklbw m0, [r1+1]
|
|
pshufw m6, m6, 0
|
|
|
|
.next2rows:
|
|
movd m1, [r1+r2*1 ]
|
|
movd m3, [r1+r2*2 ]
|
|
punpcklbw m1, [r1+r2*1+1]
|
|
punpcklbw m3, [r1+r2*2+1]
|
|
lea r1, [r1+r2*2]
|
|
movq m2, m1
|
|
movq m4, m3
|
|
pmaddubsw m0, m7
|
|
pmaddubsw m1, m6
|
|
pmaddubsw m2, m7
|
|
pmaddubsw m3, m6
|
|
paddw m0, m5
|
|
paddw m2, m5
|
|
paddw m1, m0
|
|
paddw m3, m2
|
|
psrlw m1, 6
|
|
movq m0, m4
|
|
psrlw m3, 6
|
|
packuswb m1, m1
|
|
packuswb m3, m3
|
|
CHROMAMC_AVG m1, [r0 ]
|
|
CHROMAMC_AVG m3, [r0+r2]
|
|
movd [r0 ], m1
|
|
movd [r0+r2], m3
|
|
sub r3d, 2
|
|
lea r0, [r0+r2*2]
|
|
jg .next2rows
|
|
RET
|
|
%endmacro
|
|
|
|
%define CHROMAMC_AVG NOTHING
|
|
INIT_XMM ssse3
|
|
chroma_mc8_ssse3_func put, h264, _rnd
|
|
chroma_mc8_ssse3_func put, vc1, _nornd
|
|
INIT_MMX ssse3
|
|
chroma_mc4_ssse3_func put, h264
|
|
|
|
%define CHROMAMC_AVG DIRECT_AVG
|
|
INIT_XMM ssse3
|
|
chroma_mc8_ssse3_func avg, h264, _rnd
|
|
chroma_mc8_ssse3_func avg, vc1, _nornd
|
|
INIT_MMX ssse3
|
|
chroma_mc4_ssse3_func avg, h264
|