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vpx/vp8/encoder/x86/quantize_sse2.asm
Fritz Koenig c5f890af2c Use local labels for jumps/loops in x86 assembly. 
Prepend . to local labels in assembly code.  This
allows non unique labels within a file.  Also
makes profiling information more informative
by keeping the function name with the loop name.

Change-Id: I7a983cb3a5ba2413d5dafd0a37936b268fb9e37f
2011-08-23 09:05:29 -07:00

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;
; 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 "asm_enc_offsets.asm"
; void vp8_regular_quantize_b_sse2 | arg
; (BLOCK *b, | 0
; BLOCKD *d) | 1
global sym(vp8_regular_quantize_b_sse2)
sym(vp8_regular_quantize_b_sse2):
push rbp
mov rbp, rsp
SAVE_XMM 7
GET_GOT rbx
%if ABI_IS_32BIT
push rdi
push rsi
%else
%ifidn __OUTPUT_FORMAT__,x64
push rdi
push rsi
%endif
%endif
ALIGN_STACK 16, rax
%define zrun_zbin_boost 0 ; 8
%define abs_minus_zbin 8 ; 32
%define temp_qcoeff 40 ; 32
%define qcoeff 72 ; 32
%define stack_size 104
sub rsp, stack_size
; end prolog
%if ABI_IS_32BIT
mov rdi, arg(0) ; BLOCK *b
mov rsi, arg(1) ; BLOCKD *d
%else
%ifidn __OUTPUT_FORMAT__,x64
mov rdi, rcx ; BLOCK *b
mov rsi, rdx ; BLOCKD *d
%else
;mov rdi, rdi ; BLOCK *b
;mov rsi, rsi ; BLOCKD *d
%endif
%endif
mov rdx, [rdi + vp8_block_coeff] ; coeff_ptr
mov rcx, [rdi + vp8_block_zbin] ; zbin_ptr
movd xmm7, [rdi + vp8_block_zbin_extra] ; zbin_oq_value
; z
movdqa xmm0, [rdx]
movdqa xmm4, [rdx + 16]
mov rdx, [rdi + vp8_block_round] ; round_ptr
pshuflw xmm7, xmm7, 0
punpcklwd xmm7, xmm7 ; duplicated zbin_oq_value
movdqa xmm1, xmm0
movdqa xmm5, xmm4
; sz
psraw xmm0, 15
psraw xmm4, 15
; (z ^ sz)
pxor xmm1, xmm0
pxor xmm5, xmm4
; x = abs(z)
psubw xmm1, xmm0
psubw xmm5, xmm4
movdqa xmm2, [rcx]
movdqa xmm3, [rcx + 16]
mov rcx, [rdi + vp8_block_quant] ; quant_ptr
; *zbin_ptr + zbin_oq_value
paddw xmm2, xmm7
paddw xmm3, xmm7
; x - (*zbin_ptr + zbin_oq_value)
psubw xmm1, xmm2
psubw xmm5, xmm3
movdqa [rsp + abs_minus_zbin], xmm1
movdqa [rsp + abs_minus_zbin + 16], xmm5
; add (zbin_ptr + zbin_oq_value) back
paddw xmm1, xmm2
paddw xmm5, xmm3
movdqa xmm2, [rdx]
movdqa xmm6, [rdx + 16]
movdqa xmm3, [rcx]
movdqa xmm7, [rcx + 16]
; x + round
paddw xmm1, xmm2
paddw xmm5, xmm6
; y = x * quant_ptr >> 16
pmulhw xmm3, xmm1
pmulhw xmm7, xmm5
; y += x
paddw xmm1, xmm3
paddw xmm5, xmm7
movdqa [rsp + temp_qcoeff], xmm1
movdqa [rsp + temp_qcoeff + 16], xmm5
pxor xmm6, xmm6
; zero qcoeff
movdqa [rsp + qcoeff], xmm6
movdqa [rsp + qcoeff + 16], xmm6
mov rdx, [rdi + vp8_block_zrun_zbin_boost] ; zbin_boost_ptr
mov rax, [rdi + vp8_block_quant_shift] ; quant_shift_ptr
mov [rsp + zrun_zbin_boost], rdx
%macro ZIGZAG_LOOP 1
; x
movsx ecx, WORD PTR[rsp + abs_minus_zbin + %1 * 2]
; if (x >= zbin)
sub cx, WORD PTR[rdx] ; x - zbin
lea rdx, [rdx + 2] ; zbin_boost_ptr++
jl .rq_zigzag_loop_%1 ; x < zbin
movsx edi, WORD PTR[rsp + temp_qcoeff + %1 * 2]
; downshift by quant_shift[rc]
movsx cx, BYTE PTR[rax + %1] ; quant_shift_ptr[rc]
sar edi, cl ; also sets Z bit
je .rq_zigzag_loop_%1 ; !y
mov WORD PTR[rsp + qcoeff + %1 * 2], di ;qcoeff_ptr[rc] = temp_qcoeff[rc]
mov rdx, [rsp + zrun_zbin_boost] ; reset to b->zrun_zbin_boost
.rq_zigzag_loop_%1:
%endmacro
; in vp8_default_zig_zag1d order: see vp8/common/entropy.c
ZIGZAG_LOOP 0
ZIGZAG_LOOP 1
ZIGZAG_LOOP 4
ZIGZAG_LOOP 8
ZIGZAG_LOOP 5
ZIGZAG_LOOP 2
ZIGZAG_LOOP 3
ZIGZAG_LOOP 6
ZIGZAG_LOOP 9
ZIGZAG_LOOP 12
ZIGZAG_LOOP 13
ZIGZAG_LOOP 10
ZIGZAG_LOOP 7
ZIGZAG_LOOP 11
ZIGZAG_LOOP 14
ZIGZAG_LOOP 15
movdqa xmm2, [rsp + qcoeff]
movdqa xmm3, [rsp + qcoeff + 16]
mov rcx, [rsi + vp8_blockd_dequant] ; dequant_ptr
mov rdi, [rsi + vp8_blockd_dqcoeff] ; dqcoeff_ptr
; y ^ sz
pxor xmm2, xmm0
pxor xmm3, xmm4
; x = (y ^ sz) - sz
psubw xmm2, xmm0
psubw xmm3, xmm4
; dequant
movdqa xmm0, [rcx]
movdqa xmm1, [rcx + 16]
mov rcx, [rsi + vp8_blockd_qcoeff] ; qcoeff_ptr
pmullw xmm0, xmm2
pmullw xmm1, xmm3
movdqa [rcx], xmm2 ; store qcoeff
movdqa [rcx + 16], xmm3
movdqa [rdi], xmm0 ; store dqcoeff
movdqa [rdi + 16], xmm1
; select the last value (in zig_zag order) for EOB
pcmpeqw xmm2, xmm6
pcmpeqw xmm3, xmm6
; !
pcmpeqw xmm6, xmm6
pxor xmm2, xmm6
pxor xmm3, xmm6
; mask inv_zig_zag
pand xmm2, [GLOBAL(inv_zig_zag)]
pand xmm3, [GLOBAL(inv_zig_zag + 16)]
; select the max value
pmaxsw xmm2, xmm3
pshufd xmm3, xmm2, 00001110b
pmaxsw xmm2, xmm3
pshuflw xmm3, xmm2, 00001110b
pmaxsw xmm2, xmm3
pshuflw xmm3, xmm2, 00000001b
pmaxsw xmm2, xmm3
movd eax, xmm2
and eax, 0xff
mov [rsi + vp8_blockd_eob], eax
; begin epilog
add rsp, stack_size
pop rsp
%if ABI_IS_32BIT
pop rsi
pop rdi
%else
%ifidn __OUTPUT_FORMAT__,x64
pop rsi
pop rdi
%endif
%endif
RESTORE_GOT
RESTORE_XMM
pop rbp
ret
; void vp8_fast_quantize_b_sse2 | arg
; (BLOCK *b, | 0
; BLOCKD *d) | 1
global sym(vp8_fast_quantize_b_sse2)
sym(vp8_fast_quantize_b_sse2):
push rbp
mov rbp, rsp
GET_GOT rbx
%if ABI_IS_32BIT
push rdi
push rsi
%else
%ifidn __OUTPUT_FORMAT__,x64
push rdi
push rsi
%else
; these registers are used for passing arguments
%endif
%endif
; end prolog
%if ABI_IS_32BIT
mov rdi, arg(0) ; BLOCK *b
mov rsi, arg(1) ; BLOCKD *d
%else
%ifidn __OUTPUT_FORMAT__,x64
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]
; z = coeff
movdqa xmm0, [rax]
movdqa xmm4, [rax + 16]
; dup z so we can save sz
movdqa xmm1, xmm0
movdqa xmm5, xmm4
; sz = z >> 15
psraw xmm0, 15
psraw xmm4, 15
; x = abs(z) = (z ^ sz) - sz
pxor xmm1, xmm0
pxor xmm5, xmm4
psubw xmm1, xmm0
psubw xmm5, xmm4
; x += round
paddw xmm1, [rcx]
paddw xmm5, [rcx + 16]
mov rax, [rsi + vp8_blockd_qcoeff]
mov rcx, [rsi + vp8_blockd_dequant]
mov rdi, [rsi + vp8_blockd_dqcoeff]
; y = x * quant >> 16
pmulhw xmm1, [rdx]
pmulhw xmm5, [rdx + 16]
; x = (y ^ sz) - sz
pxor xmm1, xmm0
pxor xmm5, xmm4
psubw xmm1, xmm0
psubw xmm5, xmm4
; qcoeff = x
movdqa [rax], xmm1
movdqa [rax + 16], xmm5
; x * dequant
movdqa xmm2, xmm1
movdqa xmm3, xmm5
pmullw xmm2, [rcx]
pmullw xmm3, [rcx + 16]
; dqcoeff = x * dequant
movdqa [rdi], xmm2
movdqa [rdi + 16], xmm3
pxor xmm4, xmm4 ;clear all bits
pcmpeqw xmm1, xmm4
pcmpeqw xmm5, xmm4
pcmpeqw xmm4, xmm4 ;set all bits
pxor xmm1, xmm4
pxor xmm5, xmm4
pand xmm1, [GLOBAL(inv_zig_zag)]
pand xmm5, [GLOBAL(inv_zig_zag + 16)]
pmaxsw xmm1, xmm5
; now down to 8
pshufd xmm5, xmm1, 00001110b
pmaxsw xmm1, xmm5
; only 4 left
pshuflw xmm5, xmm1, 00001110b
pmaxsw xmm1, xmm5
; okay, just 2!
pshuflw xmm5, xmm1, 00000001b
pmaxsw xmm1, xmm5
movd eax, xmm1
and eax, 0xff
mov [rsi + vp8_blockd_eob], eax
; begin epilog
%if ABI_IS_32BIT
pop rsi
pop rdi
%else
%ifidn __OUTPUT_FORMAT__,x64
pop rsi
pop rdi
%endif
%endif
RESTORE_GOT
pop rbp
ret
SECTION_RODATA
align 16
inv_zig_zag:
dw 0x0001, 0x0002, 0x0006, 0x0007
dw 0x0003, 0x0005, 0x0008, 0x000d
dw 0x0004, 0x0009, 0x000c, 0x000e
dw 0x000a, 0x000b, 0x000f, 0x0010
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