1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include <stdint.h>
20
21#include "config.h"
22#include "libavutil/attributes.h"
23#include "libavutil/internal.h"
24#include "libavutil/cpu.h"
25#include "libavutil/x86/cpu.h"
26#include "libavcodec/blockdsp.h"
27#include "libavcodec/version.h"
28
29void ff_clear_block_mmx(int16_t *block);
30void ff_clear_block_sse(int16_t *block);
31void ff_clear_blocks_mmx(int16_t *blocks);
32void ff_clear_blocks_sse(int16_t *blocks);
33
34#if FF_API_XVMC
35av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, unsigned high_bit_depth,
36                                  AVCodecContext *avctx)
37#else
38av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, unsigned high_bit_depth)
39#endif /* FF_API_XVMC */
40{
41#if HAVE_YASM
42    int cpu_flags = av_get_cpu_flags();
43
44    if (!high_bit_depth) {
45        if (EXTERNAL_MMX(cpu_flags)) {
46            c->clear_block  = ff_clear_block_mmx;
47            c->clear_blocks = ff_clear_blocks_mmx;
48        }
49
50    /* XvMCCreateBlocks() may not allocate 16-byte aligned blocks */
51    if (CONFIG_XVMC && avctx->hwaccel && avctx->hwaccel->decode_mb)
52        return;
53
54        if (EXTERNAL_SSE(cpu_flags)) {
55            c->clear_block  = ff_clear_block_sse;
56            c->clear_blocks = ff_clear_blocks_sse;
57        }
58    }
59#endif /* HAVE_YASM */
60}
61