2 * RV30/40 MMX/SSE2 optimizations
3 * Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libavutil/cpu.h"
23 #include "libavutil/x86_cpu.h"
24 #include "libavcodec/dsputil.h"
25 #include "libavcodec/rv34dsp.h"
27 void ff_rv34_idct_dc_mmx2(DCTELEM *block);
28 void ff_rv34_idct_dc_noround_mmx2(DCTELEM *block);
29 void ff_rv34_idct_dc_add_mmx(uint8_t *dst, ptrdiff_t stride, int dc);
30 void ff_rv34_idct_dc_add_sse4(uint8_t *dst, ptrdiff_t stride, int dc);
31 void ff_rv34_idct_add_mmx2(uint8_t *dst, ptrdiff_t stride, DCTELEM *block);
33 av_cold void ff_rv34dsp_init_x86(RV34DSPContext* c, DSPContext *dsp)
36 int mm_flags = av_get_cpu_flags();
38 if (mm_flags & AV_CPU_FLAG_MMX)
39 c->rv34_idct_dc_add = ff_rv34_idct_dc_add_mmx;
40 if (mm_flags & AV_CPU_FLAG_MMXEXT) {
41 c->rv34_inv_transform_dc = ff_rv34_idct_dc_noround_mmx2;
42 c->rv34_idct_add = ff_rv34_idct_add_mmx2;
44 if (mm_flags & AV_CPU_FLAG_SSE4)
45 c->rv34_idct_dc_add = ff_rv34_idct_dc_add_sse4;