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-rw-r--r--media/libvpx/vp9/common/x86/vp9_postproc_sse2.asm694
1 files changed, 694 insertions, 0 deletions
diff --git a/media/libvpx/vp9/common/x86/vp9_postproc_sse2.asm b/media/libvpx/vp9/common/x86/vp9_postproc_sse2.asm
new file mode 100644
index 000000000..ec8bfdb18
--- /dev/null
+++ b/media/libvpx/vp9/common/x86/vp9_postproc_sse2.asm
@@ -0,0 +1,694 @@
+;
+; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
+;
+; Use of this source code is governed by a BSD-style license
+; that can be found in the LICENSE file in the root of the source
+; tree. An additional intellectual property rights grant can be found
+; in the file PATENTS. All contributing project authors may
+; be found in the AUTHORS file in the root of the source tree.
+;
+
+
+%include "vpx_ports/x86_abi_support.asm"
+
+;void vp9_post_proc_down_and_across_xmm
+;(
+; unsigned char *src_ptr,
+; unsigned char *dst_ptr,
+; int src_pixels_per_line,
+; int dst_pixels_per_line,
+; int rows,
+; int cols,
+; int flimit
+;)
+global sym(vp9_post_proc_down_and_across_xmm) PRIVATE
+sym(vp9_post_proc_down_and_across_xmm):
+ push rbp
+ mov rbp, rsp
+ SHADOW_ARGS_TO_STACK 7
+ SAVE_XMM 7
+ GET_GOT rbx
+ push rsi
+ push rdi
+ ; end prolog
+
+%if ABI_IS_32BIT=1 && CONFIG_PIC=1
+ ALIGN_STACK 16, rax
+ ; move the global rd onto the stack, since we don't have enough registers
+ ; to do PIC addressing
+ movdqa xmm0, [GLOBAL(rd42)]
+ sub rsp, 16
+ movdqa [rsp], xmm0
+%define RD42 [rsp]
+%else
+%define RD42 [GLOBAL(rd42)]
+%endif
+
+
+ movd xmm2, dword ptr arg(6) ;flimit
+ punpcklwd xmm2, xmm2
+ punpckldq xmm2, xmm2
+ punpcklqdq xmm2, xmm2
+
+ mov rsi, arg(0) ;src_ptr
+ mov rdi, arg(1) ;dst_ptr
+
+ movsxd rcx, DWORD PTR arg(4) ;rows
+ movsxd rax, DWORD PTR arg(2) ;src_pixels_per_line ; destination pitch?
+ pxor xmm0, xmm0 ; mm0 = 00000000
+
+.nextrow:
+
+ xor rdx, rdx ; clear out rdx for use as loop counter
+.nextcol:
+ movq xmm3, QWORD PTR [rsi] ; mm4 = r0 p0..p7
+ punpcklbw xmm3, xmm0 ; mm3 = p0..p3
+ movdqa xmm1, xmm3 ; mm1 = p0..p3
+ psllw xmm3, 2 ;
+
+ movq xmm5, QWORD PTR [rsi + rax] ; mm4 = r1 p0..p7
+ punpcklbw xmm5, xmm0 ; mm5 = r1 p0..p3
+ paddusw xmm3, xmm5 ; mm3 += mm6
+
+ ; thresholding
+ movdqa xmm7, xmm1 ; mm7 = r0 p0..p3
+ psubusw xmm7, xmm5 ; mm7 = r0 p0..p3 - r1 p0..p3
+ psubusw xmm5, xmm1 ; mm5 = r1 p0..p3 - r0 p0..p3
+ paddusw xmm7, xmm5 ; mm7 = abs(r0 p0..p3 - r1 p0..p3)
+ pcmpgtw xmm7, xmm2
+
+ movq xmm5, QWORD PTR [rsi + 2*rax] ; mm4 = r2 p0..p7
+ punpcklbw xmm5, xmm0 ; mm5 = r2 p0..p3
+ paddusw xmm3, xmm5 ; mm3 += mm5
+
+ ; thresholding
+ movdqa xmm6, xmm1 ; mm6 = r0 p0..p3
+ psubusw xmm6, xmm5 ; mm6 = r0 p0..p3 - r2 p0..p3
+ psubusw xmm5, xmm1 ; mm5 = r2 p0..p3 - r2 p0..p3
+ paddusw xmm6, xmm5 ; mm6 = abs(r0 p0..p3 - r2 p0..p3)
+ pcmpgtw xmm6, xmm2
+ por xmm7, xmm6 ; accumulate thresholds
+
+
+ neg rax
+ movq xmm5, QWORD PTR [rsi+2*rax] ; mm4 = r-2 p0..p7
+ punpcklbw xmm5, xmm0 ; mm5 = r-2 p0..p3
+ paddusw xmm3, xmm5 ; mm3 += mm5
+
+ ; thresholding
+ movdqa xmm6, xmm1 ; mm6 = r0 p0..p3
+ psubusw xmm6, xmm5 ; mm6 = p0..p3 - r-2 p0..p3
+ psubusw xmm5, xmm1 ; mm5 = r-2 p0..p3 - p0..p3
+ paddusw xmm6, xmm5 ; mm6 = abs(r0 p0..p3 - r-2 p0..p3)
+ pcmpgtw xmm6, xmm2
+ por xmm7, xmm6 ; accumulate thresholds
+
+ movq xmm4, QWORD PTR [rsi+rax] ; mm4 = r-1 p0..p7
+ punpcklbw xmm4, xmm0 ; mm4 = r-1 p0..p3
+ paddusw xmm3, xmm4 ; mm3 += mm5
+
+ ; thresholding
+ movdqa xmm6, xmm1 ; mm6 = r0 p0..p3
+ psubusw xmm6, xmm4 ; mm6 = p0..p3 - r-2 p0..p3
+ psubusw xmm4, xmm1 ; mm5 = r-1 p0..p3 - p0..p3
+ paddusw xmm6, xmm4 ; mm6 = abs(r0 p0..p3 - r-1 p0..p3)
+ pcmpgtw xmm6, xmm2
+ por xmm7, xmm6 ; accumulate thresholds
+
+
+ paddusw xmm3, RD42 ; mm3 += round value
+ psraw xmm3, 3 ; mm3 /= 8
+
+ pand xmm1, xmm7 ; mm1 select vals > thresh from source
+ pandn xmm7, xmm3 ; mm7 select vals < thresh from blurred result
+ paddusw xmm1, xmm7 ; combination
+
+ packuswb xmm1, xmm0 ; pack to bytes
+ movq QWORD PTR [rdi], xmm1 ;
+
+ neg rax ; pitch is positive
+ add rsi, 8
+ add rdi, 8
+
+ add rdx, 8
+ cmp edx, dword arg(5) ;cols
+
+ jl .nextcol
+
+ ; done with the all cols, start the across filtering in place
+ sub rsi, rdx
+ sub rdi, rdx
+
+ xor rdx, rdx
+ movq mm0, QWORD PTR [rdi-8];
+
+.acrossnextcol:
+ movq xmm7, QWORD PTR [rdi +rdx -2]
+ movd xmm4, DWORD PTR [rdi +rdx +6]
+
+ pslldq xmm4, 8
+ por xmm4, xmm7
+
+ movdqa xmm3, xmm4
+ psrldq xmm3, 2
+ punpcklbw xmm3, xmm0 ; mm3 = p0..p3
+ movdqa xmm1, xmm3 ; mm1 = p0..p3
+ psllw xmm3, 2
+
+
+ movdqa xmm5, xmm4
+ psrldq xmm5, 3
+ punpcklbw xmm5, xmm0 ; mm5 = p1..p4
+ paddusw xmm3, xmm5 ; mm3 += mm6
+
+ ; thresholding
+ movdqa xmm7, xmm1 ; mm7 = p0..p3
+ psubusw xmm7, xmm5 ; mm7 = p0..p3 - p1..p4
+ psubusw xmm5, xmm1 ; mm5 = p1..p4 - p0..p3
+ paddusw xmm7, xmm5 ; mm7 = abs(p0..p3 - p1..p4)
+ pcmpgtw xmm7, xmm2
+
+ movdqa xmm5, xmm4
+ psrldq xmm5, 4
+ punpcklbw xmm5, xmm0 ; mm5 = p2..p5
+ paddusw xmm3, xmm5 ; mm3 += mm5
+
+ ; thresholding
+ movdqa xmm6, xmm1 ; mm6 = p0..p3
+ psubusw xmm6, xmm5 ; mm6 = p0..p3 - p1..p4
+ psubusw xmm5, xmm1 ; mm5 = p1..p4 - p0..p3
+ paddusw xmm6, xmm5 ; mm6 = abs(p0..p3 - p1..p4)
+ pcmpgtw xmm6, xmm2
+ por xmm7, xmm6 ; accumulate thresholds
+
+
+ movdqa xmm5, xmm4 ; mm5 = p-2..p5
+ punpcklbw xmm5, xmm0 ; mm5 = p-2..p1
+ paddusw xmm3, xmm5 ; mm3 += mm5
+
+ ; thresholding
+ movdqa xmm6, xmm1 ; mm6 = p0..p3
+ psubusw xmm6, xmm5 ; mm6 = p0..p3 - p1..p4
+ psubusw xmm5, xmm1 ; mm5 = p1..p4 - p0..p3
+ paddusw xmm6, xmm5 ; mm6 = abs(p0..p3 - p1..p4)
+ pcmpgtw xmm6, xmm2
+ por xmm7, xmm6 ; accumulate thresholds
+
+ psrldq xmm4, 1 ; mm4 = p-1..p5
+ punpcklbw xmm4, xmm0 ; mm4 = p-1..p2
+ paddusw xmm3, xmm4 ; mm3 += mm5
+
+ ; thresholding
+ movdqa xmm6, xmm1 ; mm6 = p0..p3
+ psubusw xmm6, xmm4 ; mm6 = p0..p3 - p1..p4
+ psubusw xmm4, xmm1 ; mm5 = p1..p4 - p0..p3
+ paddusw xmm6, xmm4 ; mm6 = abs(p0..p3 - p1..p4)
+ pcmpgtw xmm6, xmm2
+ por xmm7, xmm6 ; accumulate thresholds
+
+ paddusw xmm3, RD42 ; mm3 += round value
+ psraw xmm3, 3 ; mm3 /= 8
+
+ pand xmm1, xmm7 ; mm1 select vals > thresh from source
+ pandn xmm7, xmm3 ; mm7 select vals < thresh from blurred result
+ paddusw xmm1, xmm7 ; combination
+
+ packuswb xmm1, xmm0 ; pack to bytes
+ movq QWORD PTR [rdi+rdx-8], mm0 ; store previous four bytes
+ movdq2q mm0, xmm1
+
+ add rdx, 8
+ cmp edx, dword arg(5) ;cols
+ jl .acrossnextcol;
+
+ ; last 8 pixels
+ movq QWORD PTR [rdi+rdx-8], mm0
+
+ ; done with this rwo
+ add rsi,rax ; next line
+ mov eax, dword arg(3) ;dst_pixels_per_line ; destination pitch?
+ add rdi,rax ; next destination
+ mov eax, dword arg(2) ;src_pixels_per_line ; destination pitch?
+
+ dec rcx ; decrement count
+ jnz .nextrow ; next row
+
+%if ABI_IS_32BIT=1 && CONFIG_PIC=1
+ add rsp,16
+ pop rsp
+%endif
+ ; begin epilog
+ pop rdi
+ pop rsi
+ RESTORE_GOT
+ RESTORE_XMM
+ UNSHADOW_ARGS
+ pop rbp
+ ret
+%undef RD42
+
+
+;void vp9_mbpost_proc_down_xmm(unsigned char *dst,
+; int pitch, int rows, int cols,int flimit)
+extern sym(vp9_rv)
+global sym(vp9_mbpost_proc_down_xmm) PRIVATE
+sym(vp9_mbpost_proc_down_xmm):
+ push rbp
+ mov rbp, rsp
+ SHADOW_ARGS_TO_STACK 5
+ SAVE_XMM 7
+ GET_GOT rbx
+ push rsi
+ push rdi
+ ; end prolog
+
+ ALIGN_STACK 16, rax
+ sub rsp, 128+16
+
+ ; unsigned char d[16][8] at [rsp]
+ ; create flimit2 at [rsp+128]
+ mov eax, dword ptr arg(4) ;flimit
+ mov [rsp+128], eax
+ mov [rsp+128+4], eax
+ mov [rsp+128+8], eax
+ mov [rsp+128+12], eax
+%define flimit4 [rsp+128]
+
+%if ABI_IS_32BIT=0
+ lea r8, [GLOBAL(sym(vp9_rv))]
+%endif
+
+ ;rows +=8;
+ add dword arg(2), 8
+
+ ;for(c=0; c<cols; c+=8)
+.loop_col:
+ mov rsi, arg(0) ; s
+ pxor xmm0, xmm0 ;
+
+ movsxd rax, dword ptr arg(1) ;pitch ;
+ neg rax ; rax = -pitch
+
+ lea rsi, [rsi + rax*8]; ; rdi = s[-pitch*8]
+ neg rax
+
+
+ pxor xmm5, xmm5
+ pxor xmm6, xmm6 ;
+
+ pxor xmm7, xmm7 ;
+ mov rdi, rsi
+
+ mov rcx, 15 ;
+
+.loop_initvar:
+ movq xmm1, QWORD PTR [rdi];
+ punpcklbw xmm1, xmm0 ;
+
+ paddw xmm5, xmm1 ;
+ pmullw xmm1, xmm1 ;
+
+ movdqa xmm2, xmm1 ;
+ punpcklwd xmm1, xmm0 ;
+
+ punpckhwd xmm2, xmm0 ;
+ paddd xmm6, xmm1 ;
+
+ paddd xmm7, xmm2 ;
+ lea rdi, [rdi+rax] ;
+
+ dec rcx
+ jne .loop_initvar
+ ;save the var and sum
+ xor rdx, rdx
+.loop_row:
+ movq xmm1, QWORD PTR [rsi] ; [s-pitch*8]
+ movq xmm2, QWORD PTR [rdi] ; [s+pitch*7]
+
+ punpcklbw xmm1, xmm0
+ punpcklbw xmm2, xmm0
+
+ paddw xmm5, xmm2
+ psubw xmm5, xmm1
+
+ pmullw xmm2, xmm2
+ movdqa xmm4, xmm2
+
+ punpcklwd xmm2, xmm0
+ punpckhwd xmm4, xmm0
+
+ paddd xmm6, xmm2
+ paddd xmm7, xmm4
+
+ pmullw xmm1, xmm1
+ movdqa xmm2, xmm1
+
+ punpcklwd xmm1, xmm0
+ psubd xmm6, xmm1
+
+ punpckhwd xmm2, xmm0
+ psubd xmm7, xmm2
+
+
+ movdqa xmm3, xmm6
+ pslld xmm3, 4
+
+ psubd xmm3, xmm6
+ movdqa xmm1, xmm5
+
+ movdqa xmm4, xmm5
+ pmullw xmm1, xmm1
+
+ pmulhw xmm4, xmm4
+ movdqa xmm2, xmm1
+
+ punpcklwd xmm1, xmm4
+ punpckhwd xmm2, xmm4
+
+ movdqa xmm4, xmm7
+ pslld xmm4, 4
+
+ psubd xmm4, xmm7
+
+ psubd xmm3, xmm1
+ psubd xmm4, xmm2
+
+ psubd xmm3, flimit4
+ psubd xmm4, flimit4
+
+ psrad xmm3, 31
+ psrad xmm4, 31
+
+ packssdw xmm3, xmm4
+ packsswb xmm3, xmm0
+
+ movq xmm1, QWORD PTR [rsi+rax*8]
+
+ movq xmm2, xmm1
+ punpcklbw xmm1, xmm0
+
+ paddw xmm1, xmm5
+ mov rcx, rdx
+
+ and rcx, 127
+%if ABI_IS_32BIT=1 && CONFIG_PIC=1
+ push rax
+ lea rax, [GLOBAL(sym(vp9_rv))]
+ movdqu xmm4, [rax + rcx*2] ;vp9_rv[rcx*2]
+ pop rax
+%elif ABI_IS_32BIT=0
+ movdqu xmm4, [r8 + rcx*2] ;vp9_rv[rcx*2]
+%else
+ movdqu xmm4, [sym(vp9_rv) + rcx*2]
+%endif
+
+ paddw xmm1, xmm4
+ ;paddw xmm1, eight8s
+ psraw xmm1, 4
+
+ packuswb xmm1, xmm0
+ pand xmm1, xmm3
+
+ pandn xmm3, xmm2
+ por xmm1, xmm3
+
+ and rcx, 15
+ movq QWORD PTR [rsp + rcx*8], xmm1 ;d[rcx*8]
+
+ mov rcx, rdx
+ sub rcx, 8
+
+ and rcx, 15
+ movq mm0, [rsp + rcx*8] ;d[rcx*8]
+
+ movq [rsi], mm0
+ lea rsi, [rsi+rax]
+
+ lea rdi, [rdi+rax]
+ add rdx, 1
+
+ cmp edx, dword arg(2) ;rows
+ jl .loop_row
+
+ add dword arg(0), 8 ; s += 8
+ sub dword arg(3), 8 ; cols -= 8
+ cmp dword arg(3), 0
+ jg .loop_col
+
+ add rsp, 128+16
+ pop rsp
+
+ ; begin epilog
+ pop rdi
+ pop rsi
+ RESTORE_GOT
+ RESTORE_XMM
+ UNSHADOW_ARGS
+ pop rbp
+ ret
+%undef flimit4
+
+
+;void vp9_mbpost_proc_across_ip_xmm(unsigned char *src,
+; int pitch, int rows, int cols,int flimit)
+global sym(vp9_mbpost_proc_across_ip_xmm) PRIVATE
+sym(vp9_mbpost_proc_across_ip_xmm):
+ push rbp
+ mov rbp, rsp
+ SHADOW_ARGS_TO_STACK 5
+ SAVE_XMM 7
+ GET_GOT rbx
+ push rsi
+ push rdi
+ ; end prolog
+
+ ALIGN_STACK 16, rax
+ sub rsp, 16
+
+ ; create flimit4 at [rsp]
+ mov eax, dword ptr arg(4) ;flimit
+ mov [rsp], eax
+ mov [rsp+4], eax
+ mov [rsp+8], eax
+ mov [rsp+12], eax
+%define flimit4 [rsp]
+
+
+ ;for(r=0;r<rows;r++)
+.ip_row_loop:
+
+ xor rdx, rdx ;sumsq=0;
+ xor rcx, rcx ;sum=0;
+ mov rsi, arg(0); s
+ mov rdi, -8
+.ip_var_loop:
+ ;for(i=-8;i<=6;i++)
+ ;{
+ ; sumsq += s[i]*s[i];
+ ; sum += s[i];
+ ;}
+ movzx eax, byte [rsi+rdi]
+ add ecx, eax
+ mul al
+ add edx, eax
+ add rdi, 1
+ cmp rdi, 6
+ jle .ip_var_loop
+
+
+ ;mov rax, sumsq
+ ;movd xmm7, rax
+ movd xmm7, edx
+
+ ;mov rax, sum
+ ;movd xmm6, rax
+ movd xmm6, ecx
+
+ mov rsi, arg(0) ;s
+ xor rcx, rcx
+
+ movsxd rdx, dword arg(3) ;cols
+ add rdx, 8
+ pxor mm0, mm0
+ pxor mm1, mm1
+
+ pxor xmm0, xmm0
+.nextcol4:
+
+ movd xmm1, DWORD PTR [rsi+rcx-8] ; -8 -7 -6 -5
+ movd xmm2, DWORD PTR [rsi+rcx+7] ; +7 +8 +9 +10
+
+ punpcklbw xmm1, xmm0 ; expanding
+ punpcklbw xmm2, xmm0 ; expanding
+
+ punpcklwd xmm1, xmm0 ; expanding to dwords
+ punpcklwd xmm2, xmm0 ; expanding to dwords
+
+ psubd xmm2, xmm1 ; 7--8 8--7 9--6 10--5
+ paddd xmm1, xmm1 ; -8*2 -7*2 -6*2 -5*2
+
+ paddd xmm1, xmm2 ; 7+-8 8+-7 9+-6 10+-5
+ pmaddwd xmm1, xmm2 ; squared of 7+-8 8+-7 9+-6 10+-5
+
+ paddd xmm6, xmm2
+ paddd xmm7, xmm1
+
+ pshufd xmm6, xmm6, 0 ; duplicate the last ones
+ pshufd xmm7, xmm7, 0 ; duplicate the last ones
+
+ psrldq xmm1, 4 ; 8--7 9--6 10--5 0000
+ psrldq xmm2, 4 ; 8--7 9--6 10--5 0000
+
+ pshufd xmm3, xmm1, 3 ; 0000 8--7 8--7 8--7 squared
+ pshufd xmm4, xmm2, 3 ; 0000 8--7 8--7 8--7 squared
+
+ paddd xmm6, xmm4
+ paddd xmm7, xmm3
+
+ pshufd xmm3, xmm1, 01011111b ; 0000 0000 9--6 9--6 squared
+ pshufd xmm4, xmm2, 01011111b ; 0000 0000 9--6 9--6 squared
+
+ paddd xmm7, xmm3
+ paddd xmm6, xmm4
+
+ pshufd xmm3, xmm1, 10111111b ; 0000 0000 8--7 8--7 squared
+ pshufd xmm4, xmm2, 10111111b ; 0000 0000 8--7 8--7 squared
+
+ paddd xmm7, xmm3
+ paddd xmm6, xmm4
+
+ movdqa xmm3, xmm6
+ pmaddwd xmm3, xmm3
+
+ movdqa xmm5, xmm7
+ pslld xmm5, 4
+
+ psubd xmm5, xmm7
+ psubd xmm5, xmm3
+
+ psubd xmm5, flimit4
+ psrad xmm5, 31
+
+ packssdw xmm5, xmm0
+ packsswb xmm5, xmm0
+
+ movd xmm1, DWORD PTR [rsi+rcx]
+ movq xmm2, xmm1
+
+ punpcklbw xmm1, xmm0
+ punpcklwd xmm1, xmm0
+
+ paddd xmm1, xmm6
+ paddd xmm1, [GLOBAL(four8s)]
+
+ psrad xmm1, 4
+ packssdw xmm1, xmm0
+
+ packuswb xmm1, xmm0
+ pand xmm1, xmm5
+
+ pandn xmm5, xmm2
+ por xmm5, xmm1
+
+ movd [rsi+rcx-8], mm0
+ movq mm0, mm1
+
+ movdq2q mm1, xmm5
+ psrldq xmm7, 12
+
+ psrldq xmm6, 12
+ add rcx, 4
+
+ cmp rcx, rdx
+ jl .nextcol4
+
+ ;s+=pitch;
+ movsxd rax, dword arg(1)
+ add arg(0), rax
+
+ sub dword arg(2), 1 ;rows-=1
+ cmp dword arg(2), 0
+ jg .ip_row_loop
+
+ add rsp, 16
+ pop rsp
+
+ ; begin epilog
+ pop rdi
+ pop rsi
+ RESTORE_GOT
+ RESTORE_XMM
+ UNSHADOW_ARGS
+ pop rbp
+ ret
+%undef flimit4
+
+
+;void vp9_plane_add_noise_wmt (unsigned char *start, unsigned char *noise,
+; unsigned char blackclamp[16],
+; unsigned char whiteclamp[16],
+; unsigned char bothclamp[16],
+; unsigned int width, unsigned int height, int pitch)
+global sym(vp9_plane_add_noise_wmt) PRIVATE
+sym(vp9_plane_add_noise_wmt):
+ push rbp
+ mov rbp, rsp
+ SHADOW_ARGS_TO_STACK 8
+ GET_GOT rbx
+ push rsi
+ push rdi
+ ; end prolog
+
+.addnoise_loop:
+ call sym(LIBVPX_RAND) WRT_PLT
+ mov rcx, arg(1) ;noise
+ and rax, 0xff
+ add rcx, rax
+
+ ; we rely on the fact that the clamping vectors are stored contiguously
+ ; in black/white/both order. Note that we have to reload this here because
+ ; rdx could be trashed by rand()
+ mov rdx, arg(2) ; blackclamp
+
+
+ mov rdi, rcx
+ movsxd rcx, dword arg(5) ;[Width]
+ mov rsi, arg(0) ;Pos
+ xor rax,rax
+
+.addnoise_nextset:
+ movdqu xmm1,[rsi+rax] ; get the source
+
+ psubusb xmm1, [rdx] ;blackclamp ; clamp both sides so we don't outrange adding noise
+ paddusb xmm1, [rdx+32] ;bothclamp
+ psubusb xmm1, [rdx+16] ;whiteclamp
+
+ movdqu xmm2,[rdi+rax] ; get the noise for this line
+ paddb xmm1,xmm2 ; add it in
+ movdqu [rsi+rax],xmm1 ; store the result
+
+ add rax,16 ; move to the next line
+
+ cmp rax, rcx
+ jl .addnoise_nextset
+
+ movsxd rax, dword arg(7) ; Pitch
+ add arg(0), rax ; Start += Pitch
+ sub dword arg(6), 1 ; Height -= 1
+ jg .addnoise_loop
+
+ ; begin epilog
+ pop rdi
+ pop rsi
+ RESTORE_GOT
+ UNSHADOW_ARGS
+ pop rbp
+ ret
+
+
+SECTION_RODATA
+align 16
+rd42:
+ times 8 dw 0x04
+four8s:
+ times 4 dd 8