ref: a7c69a71d9a981c9755868038cda968d2031e4ef
dir: /vp8/encoder/x86/quantize_ssse3.asm/
;
; Copyright (c) 2010 The WebM 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"
%include "vp8_asm_enc_offsets.asm"
; void vp8_fast_quantize_b_ssse3 | arg
; (BLOCK *b, | 0
; BLOCKD *d) | 1
;
global sym(vp8_fast_quantize_b_ssse3) PRIVATE
sym(vp8_fast_quantize_b_ssse3):
push rbp
mov rbp, rsp
GET_GOT rbx
%if ABI_IS_32BIT
push rdi
push rsi
%else
%if LIBVPX_YASM_WIN64
push rdi
push rsi
%endif
%endif
; end prolog
%if ABI_IS_32BIT
mov rdi, arg(0) ; BLOCK *b
mov rsi, arg(1) ; BLOCKD *d
%else
%if LIBVPX_YASM_WIN64
mov rdi, rcx ; BLOCK *b
mov rsi, rdx ; BLOCKD *d
%else
;mov rdi, rdi ; BLOCK *b
;mov rsi, rsi ; BLOCKD *d
%endif
%endif
mov rax, [rdi + vp8_block_coeff]
mov rcx, [rdi + vp8_block_round]
mov rdx, [rdi + vp8_block_quant_fast]
; coeff
movdqa xmm0, [rax]
movdqa xmm4, [rax + 16]
; round
movdqa xmm2, [rcx]
movdqa xmm3, [rcx + 16]
movdqa xmm1, xmm0
movdqa xmm5, xmm4
; sz = z >> 15
psraw xmm0, 15
psraw xmm4, 15
pabsw xmm1, xmm1
pabsw xmm5, xmm5
paddw xmm1, xmm2
paddw xmm5, xmm3
; quant_fast
pmulhw xmm1, [rdx]
pmulhw xmm5, [rdx + 16]
mov rax, [rsi + vp8_blockd_qcoeff]
mov rdi, [rsi + vp8_blockd_dequant]
mov rcx, [rsi + vp8_blockd_dqcoeff]
movdqa xmm2, xmm1 ;store y for getting eob
movdqa xmm3, xmm5
pxor xmm1, xmm0
pxor xmm5, xmm4
psubw xmm1, xmm0
psubw xmm5, xmm4
movdqa [rax], xmm1
movdqa [rax + 16], xmm5
movdqa xmm0, [rdi]
movdqa xmm4, [rdi + 16]
pmullw xmm0, xmm1
pmullw xmm4, xmm5
pxor xmm1, xmm1
pcmpgtw xmm2, xmm1 ;calculate eob
pcmpgtw xmm3, xmm1
packsswb xmm2, xmm3
pshufb xmm2, [GLOBAL(zz_shuf)]
pmovmskb edx, xmm2
movdqa [rcx], xmm0 ;store dqcoeff
movdqa [rcx + 16], xmm4 ;store dqcoeff
mov rcx, [rsi + vp8_blockd_eob]
bsr eax, edx ;count 0
add eax, 1
cmp edx, 0 ;if all 0, eob=0
cmove eax, edx
mov BYTE PTR [rcx], al ;store eob
; begin epilog
%if ABI_IS_32BIT
pop rsi
pop rdi
%else
%if LIBVPX_YASM_WIN64
pop rsi
pop rdi
%endif
%endif
RESTORE_GOT
pop rbp
ret
SECTION_RODATA
align 16
zz_shuf:
db 0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, 10, 7, 11, 14, 15