1 ;******************************************************************************
2 ;* x86-SIMD-optimized IDCT for prores
3 ;* this is identical to "simple" IDCT written by Michael Niedermayer
4 ;* except for the clip range
6 ;* Copyright (c) 2011 Ronald S. Bultje <rsbultje@gmail.com>
8 ;* This file is part of FFmpeg.
10 ;* FFmpeg is free software; you can redistribute it and/or
11 ;* modify it under the terms of the GNU Lesser General Public
12 ;* License as published by the Free Software Foundation; either
13 ;* version 2.1 of the License, or (at your option) any later version.
15 ;* FFmpeg is distributed in the hope that it will be useful,
16 ;* but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ;* Lesser General Public License for more details.
20 ;* You should have received a copy of the GNU Lesser General Public
21 ;* License along with FFmpeg; if not, write to the Free Software
22 ;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 ;******************************************************************************
26 %include "x86util.asm"
28 %define W1sh2 22725 ; W1 = 90901 = 22725<<2 + 1
29 %define W2sh2 21407 ; W2 = 85627 = 21407<<2 - 1
30 %define W3sh2 19265 ; W3 = 77062 = 19265<<2 + 2
31 %define W4sh2 16384 ; W4 = 65535 = 16384<<2 - 1
32 %define W5sh2 12873 ; W5 = 51491 = 12873<<2 - 1
33 %define W6sh2 8867 ; W6 = 35468 = 8867<<2
34 %define W7sh2 4520 ; W7 = 18081 = 4520<<2 + 1
40 w4_plus_w2: times 4 dw W4sh2, +W2sh2
41 w4_min_w2: times 4 dw W4sh2, -W2sh2
42 w4_plus_w6: times 4 dw W4sh2, +W6sh2
43 w4_min_w6: times 4 dw W4sh2, -W6sh2
44 w1_plus_w3: times 4 dw W1sh2, +W3sh2
45 w3_min_w1: times 4 dw W3sh2, -W1sh2
46 w7_plus_w3: times 4 dw W7sh2, +W3sh2
47 w3_min_w7: times 4 dw W3sh2, -W7sh2
48 w1_plus_w5: times 4 dw W1sh2, +W5sh2
49 w5_min_w1: times 4 dw W5sh2, -W1sh2
50 w5_plus_w7: times 4 dw W5sh2, +W7sh2
51 w7_min_w5: times 4 dw W7sh2, -W5sh2
52 pw_88: times 8 dw 0x2008
59 section .text align=16
61 ; interleave data while maintaining source
62 ; %1=type, %2=dstlo, %3=dsthi, %4=src, %5=interleave
64 punpckl%1 m%2, m%4, m%5
65 punpckh%1 m%3, m%4, m%5
68 ; %1/%2=src1/dst1, %3/%4=dst2, %5/%6=src2, %7=shift
69 ; action: %3/%4 = %1/%2 - %5/%6; %1/%2 += %5/%6
70 ; %1/%2/%3/%4 >>= %7; dword -> word (in %1/%3)
72 psubd %3, %1, %5 ; { a0 - b0 }[0-3]
73 psubd %4, %2, %6 ; { a0 - b0 }[4-7]
74 paddd %1, %5 ; { a0 + b0 }[0-3]
75 paddd %2, %6 ; { a0 + b0 }[4-7]
80 packssdw %1, %2 ; row[0]
81 packssdw %3, %4 ; row[7]
84 ; %1 = row or col (for rounding variable)
85 ; %2 = number of bits to shift at the end
88 ; a0 = (W4 * row[0]) + (1 << (15 - 1));
102 SBUTTERFLY3 wd, 0, 1, 10, 8 ; { row[0], row[2] }[0-3]/[4-7]
103 pmaddwd m2, m0, [w4_plus_w6]
104 pmaddwd m3, m1, [w4_plus_w6]
105 pmaddwd m4, m0, [w4_min_w6]
106 pmaddwd m5, m1, [w4_min_w6]
107 pmaddwd m6, m0, [w4_min_w2]
108 pmaddwd m7, m1, [w4_min_w2]
109 pmaddwd m0, [w4_plus_w2]
110 pmaddwd m1, [w4_plus_w2]
112 ; a0: -1*row[0]-1*row[2]
115 ; a3: -1*row[0]+1*row[2]
117 ; a0 += W4*row[4] + W6*row[6]; i.e. -1*row[4]
118 ; a1 -= W4*row[4] + W2*row[6]; i.e. -1*row[4]-1*row[6]
119 ; a2 -= W4*row[4] - W2*row[6]; i.e. -1*row[4]+1*row[6]
120 ; a3 += W4*row[4] - W6*row[6]; i.e. -1*row[4]
121 SBUTTERFLY3 wd, 8, 9, 13, 12 ; { row[4], row[6] }[0-3]/[4-7]
122 pmaddwd m10, m8, [w4_plus_w6]
123 pmaddwd m11, m9, [w4_plus_w6]
124 paddd m0, m10 ; a0[0-3]
125 paddd m1, m11 ; a0[4-7]
126 pmaddwd m10, m8, [w4_min_w6]
127 pmaddwd m11, m9, [w4_min_w6]
128 paddd m6, m10 ; a3[0-3]
129 paddd m7, m11 ; a3[4-7]
130 pmaddwd m10, m8, [w4_min_w2]
131 pmaddwd m11, m9, [w4_min_w2]
132 pmaddwd m8, [w4_plus_w2]
133 pmaddwd m9, [w4_plus_w2]
134 psubd m4, m10 ; a2[0-3] intermediate
135 psubd m5, m11 ; a2[4-7] intermediate
136 psubd m2, m8 ; a1[0-3] intermediate
137 psubd m3, m9 ; a1[4-7] intermediate
144 mova m10,[r2+ 16] ; { row[1] }[0-7]
145 mova m8, [r2+ 48] ; { row[3] }[0-7]
146 mova m13,[r2+ 80] ; { row[5] }[0-7]
147 mova m14,[r2+112] ; { row[7] }[0-7]
159 ; b0 = MUL(W1, row[1]);
160 ; MAC(b0, W3, row[3]);
161 ; b1 = MUL(W3, row[1]);
162 ; MAC(b1, -W7, row[3]);
163 ; b2 = MUL(W5, row[1]);
164 ; MAC(b2, -W1, row[3]);
165 ; b3 = MUL(W7, row[1]);
166 ; MAC(b3, -W5, row[3]);
167 SBUTTERFLY3 wd, 0, 1, 10, 8 ; { row[1], row[3] }[0-3]/[4-7]
168 pmaddwd m2, m0, [w3_min_w7]
169 pmaddwd m3, m1, [w3_min_w7]
170 pmaddwd m4, m0, [w5_min_w1]
171 pmaddwd m5, m1, [w5_min_w1]
172 pmaddwd m6, m0, [w7_min_w5]
173 pmaddwd m7, m1, [w7_min_w5]
174 pmaddwd m0, [w1_plus_w3]
175 pmaddwd m1, [w1_plus_w3]
177 ; b0: +1*row[1]+2*row[3]
178 ; b1: +2*row[1]-1*row[3]
179 ; b2: -1*row[1]-1*row[3]
180 ; b3: +1*row[1]+1*row[3]
182 ; MAC(b0, W5, row[5]);
183 ; MAC(b0, W7, row[7]);
184 ; MAC(b1, -W1, row[5]);
185 ; MAC(b1, -W5, row[7]);
186 ; MAC(b2, W7, row[5]);
187 ; MAC(b2, W3, row[7]);
188 ; MAC(b3, W3, row[5]);
189 ; MAC(b3, -W1, row[7]);
190 SBUTTERFLY3 wd, 8, 9, 13, 14 ; { row[5], row[7] }[0-3]/[4-7]
192 ; b0: -1*row[5]+1*row[7]
193 ; b1: -1*row[5]+1*row[7]
194 ; b2: +1*row[5]+2*row[7]
195 ; b3: +2*row[5]-1*row[7]
197 pmaddwd m10, m8, [w1_plus_w5]
198 pmaddwd m11, m9, [w1_plus_w5]
199 pmaddwd m12, m8, [w5_plus_w7]
200 pmaddwd m13, m9, [w5_plus_w7]
201 psubd m2, m10 ; b1[0-3]
202 psubd m3, m11 ; b1[4-7]
203 paddd m0, m12 ; b0[0-3]
204 paddd m1, m13 ; b0[4-7]
205 pmaddwd m12, m8, [w7_plus_w3]
206 pmaddwd m13, m9, [w7_plus_w3]
207 pmaddwd m8, [w3_min_w1]
208 pmaddwd m9, [w3_min_w1]
209 paddd m4, m12 ; b2[0-3]
210 paddd m5, m13 ; b2[4-7]
211 paddd m6, m8 ; b3[0-3]
212 paddd m7, m9 ; b3[4-7]
214 ; row[0] = (a0 + b0) >> 15;
215 ; row[7] = (a0 - b0) >> 15;
216 ; row[1] = (a1 + b1) >> 15;
217 ; row[6] = (a1 - b1) >> 15;
218 ; row[2] = (a2 + b2) >> 15;
219 ; row[5] = (a2 - b2) >> 15;
220 ; row[3] = (a3 + b3) >> 15;
221 ; row[4] = (a3 - b3) >> 15;
222 mova m8, [r2+ 0] ; a0[0-3]
223 mova m9, [r2+16] ; a0[4-7]
224 SUMSUB_SHPK m8, m9, m10, m11, m0, m1, %2
225 mova m0, [r2+32] ; a1[0-3]
226 mova m1, [r2+48] ; a1[4-7]
227 SUMSUB_SHPK m0, m1, m9, m11, m2, m3, %2
228 mova m1, [r2+64] ; a2[0-3]
229 mova m2, [r2+80] ; a2[4-7]
230 SUMSUB_SHPK m1, m2, m11, m3, m4, m5, %2
231 mova m2, [r2+96] ; a3[0-3]
232 mova m3, [r2+112] ; a3[4-7]
233 SUMSUB_SHPK m2, m3, m4, m5, m6, m7, %2
236 ; void prores_idct_put_10_<opt>(uint8_t *pixels, int stride,
237 ; DCTELEM *block, const int16_t *qmat);
239 cglobal prores_idct_put_10_%1, 4, 4, %2
243 ; for (i = 0; i < 8; i++)
244 ; idctRowCondDC(block + i*8);
245 mova m10,[r2+ 0] ; { row[0] }[0-7]
246 mova m8, [r2+32] ; { row[2] }[0-7]
247 mova m13,[r2+64] ; { row[4] }[0-7]
248 mova m12,[r2+96] ; { row[6] }[0-7]
257 ; transpose for second part of IDCT
258 TRANSPOSE8x8W 8, 0, 1, 2, 4, 11, 9, 10, 3
268 ; for (i = 0; i < 8; i++)
269 ; idctSparseColAdd(dest + i, line_size, block + i);