ref: 1ec7981c34ba3b9cc304f7b5c487a28d47425b52
dir: /vp8/encoder/x86/quantize_sse2.asm/
;
; Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
;
; Use of this source code is governed by a BSD-style license and patent
; grant that can be found in the LICENSE file in the root of the source
; tree. 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"
;int vp8_regular_quantize_b_impl_sse2(short *coeff_ptr, short *zbin_ptr,
; short *qcoeff_ptr,short *dequant_ptr,
; const int *default_zig_zag, short *round_ptr,
; short *quant_ptr, short *dqcoeff_ptr,
; unsigned short zbin_oq_value,
; short *zbin_boost_ptr);
;
global sym(vp8_regular_quantize_b_impl_sse2)
sym(vp8_regular_quantize_b_impl_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 10
push rsi
push rdi
push rbx
; end prolog
ALIGN_STACK 16, rax
%define abs_minus_zbin_lo 0
%define abs_minus_zbin_hi 16
%define temp_qcoeff_lo 32
%define temp_qcoeff_hi 48
%define save_xmm6 64
%define save_xmm7 80
%define eob 96
%define vp8_regularquantizeb_stack_size eob + 16
sub rsp, vp8_regularquantizeb_stack_size
movdqa OWORD PTR[rsp + save_xmm6], xmm6
movdqa OWORD PTR[rsp + save_xmm7], xmm7
mov rdx, arg(0) ;coeff_ptr
mov eax, arg(8) ;zbin_oq_value
mov rcx, arg(1) ;zbin_ptr
movd xmm7, eax
movdqa xmm0, OWORD PTR[rdx]
movdqa xmm4, OWORD PTR[rdx + 16]
movdqa xmm1, xmm0
movdqa xmm5, xmm4
psraw xmm0, 15 ;sign of z (aka sz)
psraw xmm4, 15 ;sign of z (aka sz)
pxor xmm1, xmm0
pxor xmm5, xmm4
movdqa xmm2, OWORD PTR[rcx] ;load zbin_ptr
movdqa xmm3, OWORD PTR[rcx + 16] ;load zbin_ptr
pshuflw xmm7, xmm7, 0
psubw xmm1, xmm0 ;x = abs(z)
punpcklwd xmm7, xmm7 ;duplicated zbin_oq_value
psubw xmm5, xmm4 ;x = abs(z)
paddw xmm2, xmm7
paddw xmm3, xmm7
psubw xmm1, xmm2 ;sub (zbin_ptr + zbin_oq_value)
psubw xmm5, xmm3 ;sub (zbin_ptr + zbin_oq_value)
mov rdi, arg(5) ;round_ptr
mov rsi, arg(6) ;quant_ptr
movdqa OWORD PTR[rsp + abs_minus_zbin_lo], xmm1
movdqa OWORD PTR[rsp + abs_minus_zbin_hi], xmm5
paddw xmm1, xmm2 ;add (zbin_ptr + zbin_oq_value) back
paddw xmm5, xmm3 ;add (zbin_ptr + zbin_oq_value) back
movdqa xmm2, OWORD PTR[rdi]
movdqa xmm3, OWORD PTR[rsi]
movdqa xmm6, OWORD PTR[rdi + 16]
movdqa xmm7, OWORD PTR[rsi + 16]
paddw xmm1, xmm2
paddw xmm5, xmm6
pmulhw xmm1, xmm3
pmulhw xmm5, xmm7
mov rsi, arg(2) ;qcoeff_ptr
pxor xmm6, xmm6
pxor xmm1, xmm0
pxor xmm5, xmm4
psubw xmm1, xmm0
psubw xmm5, xmm4
movdqa OWORD PTR[rsp + temp_qcoeff_lo], xmm1
movdqa OWORD PTR[rsp + temp_qcoeff_hi], xmm5
movdqa OWORD PTR[rsi], xmm6 ;zero qcoeff
movdqa OWORD PTR[rsi + 16], xmm6 ;zero qcoeff
xor rax, rax
mov rcx, -1
mov [rsp + eob], rcx
mov rsi, arg(9) ;zbin_boost_ptr
mov rbx, arg(4) ;default_zig_zag
rq_zigzag_loop:
movsxd rcx, DWORD PTR[rbx + rax*4] ;now we have rc
movsx edi, WORD PTR [rsi] ;*zbin_boost_ptr aka zbin
lea rsi, [rsi + 2] ;zbin_boost_ptr++
movsx edx, WORD PTR[rsp + abs_minus_zbin_lo + rcx *2]
sub edx, edi ;x - zbin
jl rq_zigzag_1
mov rdi, arg(2) ;qcoeff_ptr
movsx edx, WORD PTR[rsp + temp_qcoeff_lo + rcx *2]
cmp edx, 0
je rq_zigzag_1
mov WORD PTR[rdi + rcx * 2], dx ;qcoeff_ptr[rc] = temp_qcoeff[rc]
mov rsi, arg(9) ;zbin_boost_ptr
mov [rsp + eob], rax ;eob = i
rq_zigzag_1:
movsxd rcx, DWORD PTR[rbx + rax*4 + 4]
movsx edi, WORD PTR [rsi] ;*zbin_boost_ptr aka zbin
lea rsi, [rsi + 2] ;zbin_boost_ptr++
movsx edx, WORD PTR[rsp + abs_minus_zbin_lo + rcx *2]
lea rax, [rax + 1]
sub edx, edi ;x - zbin
jl rq_zigzag_1a
mov rdi, arg(2) ;qcoeff_ptr
movsx edx, WORD PTR[rsp + temp_qcoeff_lo + rcx *2]
cmp edx, 0
je rq_zigzag_1a
mov WORD PTR[rdi + rcx * 2], dx ;qcoeff_ptr[rc] = temp_qcoeff[rc]
mov rsi, arg(9) ;zbin_boost_ptr
mov [rsp + eob], rax ;eob = i
rq_zigzag_1a:
movsxd rcx, DWORD PTR[rbx + rax*4 + 4]
movsx edi, WORD PTR [rsi] ;*zbin_boost_ptr aka zbin
lea rsi, [rsi + 2] ;zbin_boost_ptr++
movsx edx, WORD PTR[rsp + abs_minus_zbin_lo + rcx *2]
lea rax, [rax + 1]
sub edx, edi ;x - zbin
jl rq_zigzag_1b
mov rdi, arg(2) ;qcoeff_ptr
movsx edx, WORD PTR[rsp + temp_qcoeff_lo + rcx *2]
cmp edx, 0
je rq_zigzag_1b
mov WORD PTR[rdi + rcx * 2], dx ;qcoeff_ptr[rc] = temp_qcoeff[rc]
mov rsi, arg(9) ;zbin_boost_ptr
mov [rsp + eob], rax ;eob = i
rq_zigzag_1b:
movsxd rcx, DWORD PTR[rbx + rax*4 + 4]
movsx edi, WORD PTR [rsi] ;*zbin_boost_ptr aka zbin
lea rsi, [rsi + 2] ;zbin_boost_ptr++
movsx edx, WORD PTR[rsp + abs_minus_zbin_lo + rcx *2]
lea rax, [rax + 1]
sub edx, edi ;x - zbin
jl rq_zigzag_1c
mov rdi, arg(2) ;qcoeff_ptr
movsx edx, WORD PTR[rsp + temp_qcoeff_lo + rcx *2]
cmp edx, 0
je rq_zigzag_1c
mov WORD PTR[rdi + rcx * 2], dx ;qcoeff_ptr[rc] = temp_qcoeff[rc]
mov rsi, arg(9) ;zbin_boost_ptr
mov [rsp + eob], rax ;eob = i
rq_zigzag_1c:
lea rax, [rax + 1]
cmp rax, 16
jl rq_zigzag_loop
mov rdi, arg(2) ;qcoeff_ptr
mov rcx, arg(3) ;dequant_ptr
mov rsi, arg(7) ;dqcoeff_ptr
movdqa xmm2, OWORD PTR[rdi]
movdqa xmm3, OWORD PTR[rdi + 16]
movdqa xmm0, OWORD PTR[rcx]
movdqa xmm1, OWORD PTR[rcx + 16]
pmullw xmm0, xmm2
pmullw xmm1, xmm3
movdqa OWORD PTR[rsi], xmm0 ;store dqcoeff
movdqa OWORD PTR[rsi + 16], xmm1 ;store dqcoeff
mov rax, [rsp + eob]
movdqa xmm6, OWORD PTR[rsp + save_xmm6]
movdqa xmm7, OWORD PTR[rsp + save_xmm7]
add rax, 1
add rsp, vp8_regularquantizeb_stack_size
pop rsp
; begin epilog
pop rbx
pop rdi
pop rsi
UNSHADOW_ARGS
pop rbp
ret