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blockdsp_init.c
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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 
29 void ff_clear_block_mmx(int16_t *block);
30 void ff_clear_block_sse(int16_t *block);
31 void ff_clear_blocks_mmx(int16_t *blocks);
32 void ff_clear_blocks_sse(int16_t *blocks);
33 
34 #if FF_API_XVMC
35 av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, unsigned high_bit_depth,
36  AVCodecContext *avctx)
37 #else
38 av_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)) {
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)) {
57  }
58  }
59 #endif /* HAVE_YASM */
60 }