blockdsp_alpha.c

   1 /*
   2  * Alpha optimised block operations
   3  * Copyright (c) 2002 Falk Hueffner <falk@debian.org>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include <stdint.h>
  23
  24 #include "libavutil/attributes.h"
  25 #include "libavcodec/blockdsp.h"
  26 #include "asm.h"
  27
  28 static void clear_blocks_axp(int16_t *blocks) {
  29     uint64_t *p = (uint64_t *) blocks;
  30     int n = sizeof(int16_t) * 6 * 64;
  31
  32     do {
  33         p[0] = 0;
  34         p[1] = 0;
  35         p[2] = 0;
  36         p[3] = 0;
  37         p[4] = 0;
  38         p[5] = 0;
  39         p[6] = 0;
  40         p[7] = 0;
  41         p += 8;
  42         n -= 8 * 8;
  43     } while (n);
  44 }
  45
  46 av_cold void ff_blockdsp_init_alpha(BlockDSPContext *c, unsigned high_bit_depth)
  47 {
  48     if (!high_bit_depth) {
  49         c->clear_blocks = clear_blocks_axp;
  50     }
  51 }