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  1. /*
  2.  * ARM NEON optimised DSP 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 "dsputil_arm.h"
  27.  
  28. void ff_simple_idct_neon(int16_t *data);
  29. void ff_simple_idct_put_neon(uint8_t *dest, int line_size, int16_t *data);
  30. void ff_simple_idct_add_neon(uint8_t *dest, int line_size, int16_t *data);
  31.  
  32. void ff_clear_block_neon(int16_t *block);
  33. void ff_clear_blocks_neon(int16_t *blocks);
  34.  
  35. void ff_add_pixels_clamped_neon(const int16_t *, uint8_t *, int);
  36. void ff_put_pixels_clamped_neon(const int16_t *, uint8_t *, int);
  37. void ff_put_signed_pixels_clamped_neon(const int16_t *, uint8_t *, int);
  38.  
  39. void ff_vector_clipf_neon(float *dst, const float *src, float min, float max,
  40.                           int len);
  41. void ff_vector_clip_int32_neon(int32_t *dst, const int32_t *src, int32_t min,
  42.                                int32_t max, unsigned int len);
  43.  
  44. int32_t ff_scalarproduct_int16_neon(const int16_t *v1, const int16_t *v2, int len);
  45. int32_t ff_scalarproduct_and_madd_int16_neon(int16_t *v1, const int16_t *v2,
  46.                                              const int16_t *v3, int len, int mul);
  47.  
  48. void ff_apply_window_int16_neon(int16_t *dst, const int16_t *src,
  49.                                 const int16_t *window, unsigned n);
  50.  
  51. av_cold void ff_dsputil_init_neon(DSPContext *c, AVCodecContext *avctx)
  52. {
  53.     const int high_bit_depth = avctx->bits_per_raw_sample > 8;
  54.  
  55.     if (!avctx->lowres && avctx->bits_per_raw_sample <= 8) {
  56.         if (avctx->idct_algo == FF_IDCT_AUTO ||
  57.             avctx->idct_algo == FF_IDCT_SIMPLENEON) {
  58.             c->idct_put              = ff_simple_idct_put_neon;
  59.             c->idct_add              = ff_simple_idct_add_neon;
  60.             c->idct                  = ff_simple_idct_neon;
  61.             c->idct_permutation_type = FF_PARTTRANS_IDCT_PERM;
  62.         }
  63.     }
  64.  
  65.     if (!high_bit_depth) {
  66.         c->clear_block  = ff_clear_block_neon;
  67.         c->clear_blocks = ff_clear_blocks_neon;
  68.     }
  69.  
  70.     c->add_pixels_clamped = ff_add_pixels_clamped_neon;
  71.     c->put_pixels_clamped = ff_put_pixels_clamped_neon;
  72.     c->put_signed_pixels_clamped = ff_put_signed_pixels_clamped_neon;
  73.  
  74.     c->vector_clipf               = ff_vector_clipf_neon;
  75.     c->vector_clip_int32          = ff_vector_clip_int32_neon;
  76.  
  77.     c->scalarproduct_int16 = ff_scalarproduct_int16_neon;
  78.     c->scalarproduct_and_madd_int16 = ff_scalarproduct_and_madd_int16_neon;
  79.  
  80.     c->apply_window_int16 = ff_apply_window_int16_neon;
  81. }
  82.