287 lines
7.9 KiB
NASM
287 lines
7.9 KiB
NASM
;
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; Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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;
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; Use of this source code is governed by a BSD-style license
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; that can be found in the LICENSE file in the root of the source
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; tree. An additional intellectual property rights grant can be found
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; in the file PATENTS. All contributing project authors may
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; be found in the AUTHORS file in the root of the source tree.
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;
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%include "vpx_ports/x86_abi_support.asm"
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;int vp9_fast_quantize_b_impl_mmx(short *coeff_ptr, short *zbin_ptr,
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; short *qcoeff_ptr,short *dequant_ptr,
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; short *scan_mask, short *round_ptr,
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; short *quant_ptr, short *dqcoeff_ptr);
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global sym(vp9_fast_quantize_b_impl_mmx)
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sym(vp9_fast_quantize_b_impl_mmx):
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push rbp
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mov rbp, rsp
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SHADOW_ARGS_TO_STACK 8
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push rsi
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push rdi
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; end prolog
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mov rsi, arg(0) ;coeff_ptr
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movq mm0, [rsi]
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mov rax, arg(1) ;zbin_ptr
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movq mm1, [rax]
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movq mm3, mm0
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psraw mm0, 15
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pxor mm3, mm0
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psubw mm3, mm0 ; abs
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movq mm2, mm3
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pcmpgtw mm1, mm2
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pandn mm1, mm2
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movq mm3, mm1
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mov rdx, arg(6) ;quant_ptr
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movq mm1, [rdx]
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mov rcx, arg(5) ;round_ptr
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movq mm2, [rcx]
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paddw mm3, mm2
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pmulhuw mm3, mm1
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pxor mm3, mm0
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psubw mm3, mm0 ;gain the sign back
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mov rdi, arg(2) ;qcoeff_ptr
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movq mm0, mm3
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movq [rdi], mm3
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mov rax, arg(3) ;dequant_ptr
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movq mm2, [rax]
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pmullw mm3, mm2
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mov rax, arg(7) ;dqcoeff_ptr
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movq [rax], mm3
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; next 8
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movq mm4, [rsi+8]
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mov rax, arg(1) ;zbin_ptr
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movq mm5, [rax+8]
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movq mm7, mm4
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psraw mm4, 15
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pxor mm7, mm4
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psubw mm7, mm4 ; abs
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movq mm6, mm7
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pcmpgtw mm5, mm6
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pandn mm5, mm6
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movq mm7, mm5
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movq mm5, [rdx+8]
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movq mm6, [rcx+8]
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paddw mm7, mm6
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pmulhuw mm7, mm5
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pxor mm7, mm4
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psubw mm7, mm4;gain the sign back
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mov rdi, arg(2) ;qcoeff_ptr
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movq mm1, mm7
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movq [rdi+8], mm7
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mov rax, arg(3) ;dequant_ptr
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movq mm6, [rax+8]
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pmullw mm7, mm6
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mov rax, arg(7) ;dqcoeff_ptr
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movq [rax+8], mm7
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; next 8
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movq mm4, [rsi+16]
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mov rax, arg(1) ;zbin_ptr
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movq mm5, [rax+16]
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movq mm7, mm4
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psraw mm4, 15
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pxor mm7, mm4
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psubw mm7, mm4 ; abs
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movq mm6, mm7
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pcmpgtw mm5, mm6
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pandn mm5, mm6
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movq mm7, mm5
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movq mm5, [rdx+16]
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movq mm6, [rcx+16]
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paddw mm7, mm6
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pmulhuw mm7, mm5
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pxor mm7, mm4
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psubw mm7, mm4;gain the sign back
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mov rdi, arg(2) ;qcoeff_ptr
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movq mm1, mm7
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movq [rdi+16], mm7
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mov rax, arg(3) ;dequant_ptr
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movq mm6, [rax+16]
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pmullw mm7, mm6
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mov rax, arg(7) ;dqcoeff_ptr
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movq [rax+16], mm7
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; next 8
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movq mm4, [rsi+24]
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mov rax, arg(1) ;zbin_ptr
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movq mm5, [rax+24]
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movq mm7, mm4
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psraw mm4, 15
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pxor mm7, mm4
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psubw mm7, mm4 ; abs
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movq mm6, mm7
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pcmpgtw mm5, mm6
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pandn mm5, mm6
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movq mm7, mm5
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movq mm5, [rdx+24]
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movq mm6, [rcx+24]
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paddw mm7, mm6
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pmulhuw mm7, mm5
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pxor mm7, mm4
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psubw mm7, mm4;gain the sign back
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mov rdi, arg(2) ;qcoeff_ptr
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movq mm1, mm7
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movq [rdi+24], mm7
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mov rax, arg(3) ;dequant_ptr
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movq mm6, [rax+24]
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pmullw mm7, mm6
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mov rax, arg(7) ;dqcoeff_ptr
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movq [rax+24], mm7
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mov rdi, arg(4) ;scan_mask
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mov rsi, arg(2) ;qcoeff_ptr
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pxor mm5, mm5
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pxor mm7, mm7
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movq mm0, [rsi]
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movq mm1, [rsi+8]
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movq mm2, [rdi]
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movq mm3, [rdi+8];
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pcmpeqw mm0, mm7
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pcmpeqw mm1, mm7
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pcmpeqw mm6, mm6
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pxor mm0, mm6
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pxor mm1, mm6
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psrlw mm0, 15
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psrlw mm1, 15
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pmaddwd mm0, mm2
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pmaddwd mm1, mm3
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movq mm5, mm0
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paddd mm5, mm1
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movq mm0, [rsi+16]
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movq mm1, [rsi+24]
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movq mm2, [rdi+16]
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movq mm3, [rdi+24];
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pcmpeqw mm0, mm7
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pcmpeqw mm1, mm7
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pcmpeqw mm6, mm6
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pxor mm0, mm6
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pxor mm1, mm6
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psrlw mm0, 15
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psrlw mm1, 15
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pmaddwd mm0, mm2
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pmaddwd mm1, mm3
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paddd mm5, mm0
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paddd mm5, mm1
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movq mm0, mm5
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psrlq mm5, 32
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paddd mm0, mm5
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; eob adjustment begins here
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movq rcx, mm0
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and rcx, 0xffff
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xor rdx, rdx
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sub rdx, rcx ; rdx=-rcx
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bsr rax, rcx
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inc rax
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sar rdx, 31
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and rax, rdx
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; Substitute the sse assembly for the old mmx mixed assembly/C. The
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; following is kept as reference
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; movq rcx, mm0
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; bsr rax, rcx
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;
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; mov eob, rax
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; mov eee, rcx
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;
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;if(eee==0)
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;{
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; eob=-1;
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;}
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;else if(eee<0)
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;{
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; eob=15;
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;}
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;d->eob = eob+1;
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; begin epilog
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pop rdi
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pop rsi
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UNSHADOW_ARGS
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pop rbp
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ret
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