2 * Alpha optimized DSP utils
3 * Copyright (c) 2002 Falk Hueffner <falk@debian.org>
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavcodec/dsputil.h"
23 #include "dsputil_alpha.h"
26 void get_pixels_mvi(DCTELEM *av_restrict block,
27 const uint8_t *av_restrict pixels, int line_size)
35 stq(unpkbw(p), block);
36 stq(unpkbw(p >> 32), block + 4);
43 void diff_pixels_mvi(DCTELEM *block, const uint8_t *s1, const uint8_t *s2,
46 uint64_t mask = 0x4040;
51 uint64_t x, y, c, d, a;
58 a = zap(mask, c); /* We use 0x4040404040404040 here... */
59 d += 4 * a; /* ...so we can use s4addq here. */
62 stq(unpkbw(d) | (unpkbw(signs) << 8), block);
63 stq(unpkbw(d >> 32) | (unpkbw(signs >> 32) << 8), block + 4);
71 static inline uint64_t avg2(uint64_t a, uint64_t b)
73 return (a | b) - (((a ^ b) & BYTE_VEC(0xfe)) >> 1);
76 static inline uint64_t avg4(uint64_t l1, uint64_t l2, uint64_t l3, uint64_t l4)
78 uint64_t r1 = ((l1 & ~BYTE_VEC(0x03)) >> 2)
79 + ((l2 & ~BYTE_VEC(0x03)) >> 2)
80 + ((l3 & ~BYTE_VEC(0x03)) >> 2)
81 + ((l4 & ~BYTE_VEC(0x03)) >> 2);
82 uint64_t r2 = (( (l1 & BYTE_VEC(0x03))
83 + (l2 & BYTE_VEC(0x03))
84 + (l3 & BYTE_VEC(0x03))
85 + (l4 & BYTE_VEC(0x03))
86 + BYTE_VEC(0x02)) >> 2) & BYTE_VEC(0x03);
90 int pix_abs8x8_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
94 if ((size_t) pix2 & 0x7) {
95 /* works only when pix2 is actually unaligned */
96 do { /* do 8 pixel a time */
101 result += perr(p1, p2);
112 result += perr(p1, p2);
122 #if 0 /* now done in assembly */
123 int pix_abs16x16_mvi(uint8_t *pix1, uint8_t *pix2, int line_size)
128 if ((size_t) pix2 & 0x7) {
129 /* works only when pix2 is actually unaligned */
130 do { /* do 16 pixel a time */
131 uint64_t p1_l, p1_r, p2_l, p2_r;
135 p1_r = ldq(pix1 + 8);
137 p2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2);
138 p2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2);
142 result += perr(p1_l, p2_l)
147 uint64_t p1_l, p1_r, p2_l, p2_r;
150 p1_r = ldq(pix1 + 8);
152 p2_r = ldq(pix2 + 8);
156 result += perr(p1_l, p2_l)
165 int pix_abs16x16_x2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
168 uint64_t disalign = (size_t) pix2 & 0x7;
173 uint64_t p1_l, p1_r, p2_l, p2_r;
177 p1_r = ldq(pix1 + 8);
180 p2_l = avg2(l, (l >> 8) | ((uint64_t) r << 56));
181 p2_r = avg2(r, (r >> 8) | ((uint64_t) pix2[16] << 56));
185 result += perr(p1_l, p2_l)
190 /* |.......l|lllllllr|rrrrrrr*|
191 This case is special because disalign1 would be 8, which
192 gets treated as 0 by extqh. At least it is a bit faster
195 uint64_t p1_l, p1_r, p2_l, p2_r;
199 p1_r = ldq(pix1 + 8);
202 r = ldq_u(pix2 + 16);
203 p2_l = avg2(extql(l, disalign) | extqh(m, disalign), m);
204 p2_r = avg2(extql(m, disalign) | extqh(r, disalign), r);
208 result += perr(p1_l, p2_l)
214 uint64_t disalign1 = disalign + 1;
215 uint64_t p1_l, p1_r, p2_l, p2_r;
219 p1_r = ldq(pix1 + 8);
222 r = ldq_u(pix2 + 16);
223 p2_l = avg2(extql(l, disalign) | extqh(m, disalign),
224 extql(l, disalign1) | extqh(m, disalign1));
225 p2_r = avg2(extql(m, disalign) | extqh(r, disalign),
226 extql(m, disalign1) | extqh(r, disalign1));
230 result += perr(p1_l, p2_l)
238 int pix_abs16x16_y2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
242 if ((size_t) pix2 & 0x7) {
243 uint64_t t, p2_l, p2_r;
245 p2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2);
246 p2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2);
249 uint64_t p1_l, p1_r, np2_l, np2_r;
253 p1_r = ldq(pix1 + 8);
256 np2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2);
257 np2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2);
259 result += perr(p1_l, avg2(p2_l, np2_l))
260 + perr(p1_r, avg2(p2_r, np2_r));
270 p2_r = ldq(pix2 + 8);
272 uint64_t p1_l, p1_r, np2_l, np2_r;
275 p1_r = ldq(pix1 + 8);
278 np2_r = ldq(pix2 + 8);
280 result += perr(p1_l, avg2(p2_l, np2_l))
281 + perr(p1_r, avg2(p2_r, np2_r));
291 int pix_abs16x16_xy2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
296 uint64_t p2_l, p2_r, p2_x;
299 p1_r = ldq(pix1 + 8);
301 if ((size_t) pix2 & 0x7) { /* could be optimized a lot */
303 p2_r = uldq(pix2 + 8);
304 p2_x = (uint64_t) pix2[16] << 56;
307 p2_r = ldq(pix2 + 8);
308 p2_x = ldq(pix2 + 16) << 56;
312 uint64_t np1_l, np1_r;
313 uint64_t np2_l, np2_r, np2_x;
319 np1_r = ldq(pix1 + 8);
321 if ((size_t) pix2 & 0x7) { /* could be optimized a lot */
323 np2_r = uldq(pix2 + 8);
324 np2_x = (uint64_t) pix2[16] << 56;
327 np2_r = ldq(pix2 + 8);
328 np2_x = ldq(pix2 + 16) << 56;
332 avg4( p2_l, ( p2_l >> 8) | ((uint64_t) p2_r << 56),
333 np2_l, (np2_l >> 8) | ((uint64_t) np2_r << 56)))
335 avg4( p2_r, ( p2_r >> 8) | ((uint64_t) p2_x),
336 np2_r, (np2_r >> 8) | ((uint64_t) np2_x)));