FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
blockdsp_init.c
Go to the documentation of this file.
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 
35  AVCodecContext *avctx)
36 {
37 #if HAVE_YASM
38  int cpu_flags = av_get_cpu_flags();
39 
40  if (EXTERNAL_MMX(cpu_flags)) {
43  }
44 
45  /* XvMCCreateBlocks() may not allocate 16-byte aligned blocks */
46  if (CONFIG_XVMC && avctx->hwaccel && avctx->hwaccel->decode_mb)
47  return;
48 
49  if (EXTERNAL_SSE(cpu_flags)) {
52  }
53 #endif /* HAVE_YASM */
54 }
#define EXTERNAL_MMX(flags)
Definition: cpu.h:54
void(* clear_block)(int16_t *block)
Definition: blockdsp.h:35
void(* clear_blocks)(int16_t *blocks)
Definition: blockdsp.h:36
#define EXTERNAL_SSE(flags)
Definition: cpu.h:56
Macro definitions for various function/variable attributes.
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2843
#define av_cold
Definition: attributes.h:82
void ff_clear_block_sse(int16_t *block)
void(* decode_mb)(struct MpegEncContext *s)
Called for every Macroblock in a slice.
Definition: avcodec.h:3605
Libavcodec version macros.
av_cold void ff_blockdsp_init_x86(BlockDSPContext *c, AVCodecContext *avctx)
Definition: blockdsp_init.c:34
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:1532
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:76
void ff_clear_blocks_mmx(int16_t *blocks)
static double c[64]
static int16_t block[64]
Definition: dct-test.c:112