2 * SIMD-optimized pixel operations
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/attributes.h"
22 #include "libavcodec/pixblockdsp.h"
25 static void get_pixels_mvi(int16_t *restrict block,
26 const uint8_t *restrict pixels, ptrdiff_t stride)
34 stq(unpkbw(p), block);
35 stq(unpkbw(p >> 32), block + 4);
42 static void diff_pixels_mvi(int16_t *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 av_cold void ff_pixblockdsp_init_alpha(PixblockDSPContext *c, AVCodecContext *avctx,
72 unsigned high_bit_depth)
74 if (amask(AMASK_MVI) == 0) {
76 c->get_pixels = get_pixels_mvi;
77 c->diff_pixels = diff_pixels_mvi;