2 * Copyright (c) 2007 Loren Merritt
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
22 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/x86/asm.h"
25 #include "libavutil/x86/cpu.h"
26 #include "libavcodec/svq1enc.h"
30 static int ssd_int8_vs_int16_mmx(const int8_t *pix1, const int16_t *pix2,
37 "pxor %%mm4, %%mm4 \n"
40 "movq (%2, %0), %%mm2 \n"
41 "movq (%3, %0, 2), %%mm0 \n"
42 "movq 8(%3, %0, 2), %%mm1 \n"
43 "punpckhbw %%mm2, %%mm3 \n"
44 "punpcklbw %%mm2, %%mm2 \n"
47 "psubw %%mm3, %%mm1 \n"
48 "psubw %%mm2, %%mm0 \n"
49 "pmaddwd %%mm1, %%mm1 \n"
50 "pmaddwd %%mm0, %%mm0 \n"
51 "paddd %%mm1, %%mm4 \n"
52 "paddd %%mm0, %%mm4 \n"
54 "movq %%mm4, %%mm3 \n"
56 "paddd %%mm3, %%mm4 \n"
58 : "+r" (i), "=r" (sum)
59 : "r" (pix1), "r" (pix2));
64 #endif /* HAVE_INLINE_ASM */
66 av_cold void ff_svq1enc_init_x86(SVQ1EncContext *c)
69 int cpu_flags = av_get_cpu_flags();
71 if (INLINE_MMX(cpu_flags)) {
72 c->ssd_int8_vs_int16 = ssd_int8_vs_int16_mmx;
74 #endif /* HAVE_INLINE_ASM */