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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_block_avx(int16_t *block);
32 void ff_clear_blocks_mmx(int16_t *blocks);
33 void ff_clear_blocks_sse(int16_t *blocks);
34 void ff_clear_blocks_avx(int16_t *blocks);
35 
37  AVCodecContext *avctx)
38 {
39 #if HAVE_X86ASM
41 
42  if (EXTERNAL_MMX(cpu_flags)) {
45  }
46 
47  /* XvMCCreateBlocks() may not allocate 16-byte aligned blocks */
48  if (CONFIG_XVMC && avctx->hwaccel && avctx->hwaccel->decode_mb)
49  return;
50 
51  if (EXTERNAL_SSE(cpu_flags)) {
54  }
55  if (EXTERNAL_AVX_FAST(cpu_flags)) {
58  }
59 #endif /* HAVE_X86ASM */
60 }
#define EXTERNAL_MMX(flags)
Definition: cpu.h:56
void(* clear_block)(int16_t *block)
Definition: blockdsp.h:36
void(* clear_blocks)(int16_t *blocks)
Definition: blockdsp.h:37
static atomic_int cpu_flags
Definition: cpu.c:50
#define EXTERNAL_SSE(flags)
Definition: cpu.h:58
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2658
Macro definitions for various function/variable attributes.
static int16_t block[64]
Definition: dct.c:115
#define av_cold
Definition: attributes.h:82
void ff_clear_block_avx(int16_t *block)
void ff_clear_block_sse(int16_t *block)
#define EXTERNAL_AVX_FAST(flags)
Definition: cpu.h:71
void(* decode_mb)(struct MpegEncContext *s)
Called for every Macroblock in a slice.
Definition: avcodec.h:3651
Libavcodec version macros.
void ff_clear_blocks_avx(int16_t *blocks)
av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp_init.c:36
void ff_clear_block_mmx(int16_t *block)
common internal API header
void ff_clear_blocks_sse(int16_t *blocks)
main external API structure.
Definition: avcodec.h:1502
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:92
void ff_clear_blocks_mmx(int16_t *blocks)
static double c[64]