1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
;
; 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"
;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,
; short *quant_shift);
;
global sym(vp8_regular_quantize_b_impl_sse2)
sym(vp8_regular_quantize_b_impl_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 11
SAVE_XMM
push rsi
push rdi
push rbx
ALIGN_STACK 16, rax
%define abs_minus_zbin 0
%define temp_qcoeff 32
%define qcoeff 64
%define eob_tmp 96
%define stack_size 112
sub rsp, stack_size
; end prolog
mov rdx, arg(0) ; coeff_ptr
mov rcx, arg(1) ; zbin_ptr
movd xmm7, arg(8) ; zbin_oq_value
mov rdi, arg(5) ; round_ptr
mov rsi, arg(6) ; quant_ptr
; z
movdqa xmm0, OWORD PTR[rdx]
movdqa xmm4, OWORD PTR[rdx + 16]
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, OWORD PTR[rcx]
movdqa xmm3, OWORD PTR[rcx + 16]
; *zbin_ptr + zbin_oq_value
paddw xmm2, xmm7
paddw xmm3, xmm7
; x - (*zbin_ptr + zbin_oq_value)
psubw xmm1, xmm2
psubw xmm5, xmm3
movdqa OWORD PTR[rsp + abs_minus_zbin], xmm1
movdqa OWORD PTR[rsp + abs_minus_zbin + 16], xmm5
; add (zbin_ptr + zbin_oq_value) back
paddw xmm1, xmm2
paddw xmm5, xmm3
movdqa xmm2, OWORD PTR[rdi]
movdqa xmm6, OWORD PTR[rdi + 16]
movdqa xmm3, OWORD PTR[rsi]
movdqa xmm7, OWORD PTR[rsi + 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 OWORD PTR[rsp + temp_qcoeff], xmm1
movdqa OWORD PTR[rsp + temp_qcoeff + 16], xmm5
pxor xmm6, xmm6
; zero qcoeff
movdqa OWORD PTR[rsp + qcoeff], xmm6
movdqa OWORD PTR[rsp + qcoeff + 16], xmm6
mov [rsp + eob_tmp], DWORD -1 ; eob
mov rsi, arg(9) ; zbin_boost_ptr
mov rdi, arg(4) ; default_zig_zag
mov rax, arg(10) ; quant_shift_ptr
%macro ZIGZAG_LOOP 2
rq_zigzag_loop_%1:
movsxd rdx, DWORD PTR[rdi + (%1 * 4)] ; rc
movsx ebx, WORD PTR [rsi] ; *zbin_boost_ptr
lea rsi, [rsi + 2] ; zbin_boost_ptr++
; x
movsx ecx, WORD PTR[rsp + abs_minus_zbin + rdx *2]
; if (x >= zbin)
sub ecx, ebx ; x - zbin
jl rq_zigzag_loop_%2 ; x < zbin
movsx ebx, WORD PTR[rsp + temp_qcoeff + rdx *2]
; downshift by quant_shift[rdx]
movsx ecx, WORD PTR[rax + rdx*2] ; quant_shift_ptr[rc]
sar ebx, cl ; also sets Z bit
je rq_zigzag_loop_%2 ; !y
mov WORD PTR[rsp + qcoeff + rdx * 2], bx ;qcoeff_ptr[rc] = temp_qcoeff[rc]
mov rsi, arg(9) ; reset to b->zrun_zbin_boost
mov [rsp + eob_tmp], DWORD %1 ; eob = i
%endmacro
ZIGZAG_LOOP 0, 1
ZIGZAG_LOOP 1, 2
ZIGZAG_LOOP 2, 3
ZIGZAG_LOOP 3, 4
ZIGZAG_LOOP 4, 5
ZIGZAG_LOOP 5, 6
ZIGZAG_LOOP 6, 7
ZIGZAG_LOOP 7, 8
ZIGZAG_LOOP 8, 9
ZIGZAG_LOOP 9, 10
ZIGZAG_LOOP 10, 11
ZIGZAG_LOOP 11, 12
ZIGZAG_LOOP 12, 13
ZIGZAG_LOOP 13, 14
ZIGZAG_LOOP 14, 15
ZIGZAG_LOOP 15, end
rq_zigzag_loop_end:
mov rbx, arg(2) ; qcoeff_ptr
mov rcx, arg(3) ; dequant_ptr
mov rsi, arg(7) ; dqcoeff_ptr
mov rax, [rsp + eob_tmp] ; eob
movdqa xmm2, OWORD PTR[rsp + qcoeff]
movdqa xmm3, OWORD PTR[rsp + qcoeff + 16]
; y ^ sz
pxor xmm2, xmm0
pxor xmm3, xmm4
; x = (y ^ sz) - sz
psubw xmm2, xmm0
psubw xmm3, xmm4
movdqa xmm0, OWORD PTR[rcx]
movdqa xmm1, OWORD PTR[rcx + 16]
pmullw xmm0, xmm2
pmullw xmm1, xmm3
movdqa OWORD PTR[rbx], xmm2
movdqa OWORD PTR[rbx + 16], xmm3
movdqa OWORD PTR[rsi], xmm0 ; store dqcoeff
movdqa OWORD PTR[rsi + 16], xmm1 ; store dqcoeff
add rax, 1
; begin epilog
add rsp, stack_size
pop rsp
pop rbx
pop rdi
pop rsi
RESTORE_XMM
UNSHADOW_ARGS
pop rbp
ret
;int vp8_fast_quantize_b_impl_sse2(short *coeff_ptr,
; short *qcoeff_ptr,short *dequant_ptr,
; short *inv_scan_order, short *round_ptr,
; short *quant_ptr, short *dqcoeff_ptr);
global sym(vp8_fast_quantize_b_impl_sse2)
sym(vp8_fast_quantize_b_impl_sse2):
push rbp
mov rbp, rsp
SHADOW_ARGS_TO_STACK 7
push rsi
push rdi
; end prolog
mov rdx, arg(0) ;coeff_ptr
mov rcx, arg(2) ;dequant_ptr
mov rdi, arg(4) ;round_ptr
mov rsi, arg(5) ;quant_ptr
movdqa xmm0, XMMWORD PTR[rdx]
movdqa xmm4, XMMWORD PTR[rdx + 16]
movdqa xmm2, XMMWORD PTR[rdi] ;round lo
movdqa xmm3, XMMWORD PTR[rdi + 16] ;round hi
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
psubw xmm1, xmm0 ;x = abs(z)
psubw xmm5, xmm4 ;x = abs(z)
paddw xmm1, xmm2
paddw xmm5, xmm3
pmulhw xmm1, XMMWORD PTR[rsi]
pmulhw xmm5, XMMWORD PTR[rsi + 16]
mov rdi, arg(1) ;qcoeff_ptr
mov rsi, arg(6) ;dqcoeff_ptr
movdqa xmm2, XMMWORD PTR[rcx]
movdqa xmm3, XMMWORD PTR[rcx + 16]
pxor xmm1, xmm0
pxor xmm5, xmm4
psubw xmm1, xmm0
psubw xmm5, xmm4
movdqa XMMWORD PTR[rdi], xmm1
movdqa XMMWORD PTR[rdi + 16], xmm5
pmullw xmm2, xmm1
pmullw xmm3, xmm5
mov rdi, arg(3) ;inv_scan_order
; Start with 16
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, XMMWORD PTR[rdi]
pand xmm5, XMMWORD PTR[rdi+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 rax, xmm1
and rax, 0xff
movdqa XMMWORD PTR[rsi], xmm2 ;store dqcoeff
movdqa XMMWORD PTR[rsi + 16], xmm3 ;store dqcoeff
; begin epilog
pop rdi
pop rsi
UNSHADOW_ARGS
pop rbp
ret
|
