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  1. /*
  2.  * ARM-NEON-optimized IDCT functions
  3.  * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
  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/avcodec.h"
  26. #include "libavcodec/idctdsp.h"
  27. #include "idct.h"
  28. #include "idctdsp_arm.h"
  29.  
  30. void ff_add_pixels_clamped_neon(const int16_t *, uint8_t *, ptrdiff_t);
  31. void ff_put_pixels_clamped_neon(const int16_t *, uint8_t *, ptrdiff_t);
  32. void ff_put_signed_pixels_clamped_neon(const int16_t *, uint8_t *, ptrdiff_t);
  33.  
  34. av_cold void ff_idctdsp_init_neon(IDCTDSPContext *c, AVCodecContext *avctx,
  35.                                   unsigned high_bit_depth)
  36. {
  37.     if (!avctx->lowres && !high_bit_depth) {
  38.         if (avctx->idct_algo == FF_IDCT_AUTO ||
  39.             avctx->idct_algo == FF_IDCT_SIMPLEAUTO ||
  40.             avctx->idct_algo == FF_IDCT_SIMPLENEON) {
  41.             c->idct_put  = ff_simple_idct_put_neon;
  42.             c->idct_add  = ff_simple_idct_add_neon;
  43.             c->idct      = ff_simple_idct_neon;
  44.             c->perm_type = FF_IDCT_PERM_PARTTRANS;
  45.         }
  46.     }
  47.  
  48.     c->add_pixels_clamped        = ff_add_pixels_clamped_neon;
  49.     c->put_pixels_clamped        = ff_put_pixels_clamped_neon;
  50.     c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_neon;
  51. }
  52.