ffmpeg/libavcodec/x86/blockdsp_init.c

   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)) {
  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 }