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  1. /*
  2.  * ARM optimized DSP utils
  3.  * Copyright (c) 2001 Lionel Ulmer
  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 "libavutil/attributes.h"
  23. #include "libavutil/arm/cpu.h"
  24. #include "dsputil_arm.h"
  25.  
  26. void ff_j_rev_dct_arm(int16_t *data);
  27. void ff_simple_idct_arm(int16_t *data);
  28.  
  29. /* XXX: local hack */
  30. static void (*ff_put_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
  31. static void (*ff_add_pixels_clamped)(const int16_t *block, uint8_t *pixels, int line_size);
  32.  
  33. void ff_add_pixels_clamped_arm(const int16_t *block, uint8_t *dest,
  34.                                int line_size);
  35.  
  36. /* XXX: those functions should be suppressed ASAP when all IDCTs are
  37.    converted */
  38. static void j_rev_dct_arm_put(uint8_t *dest, int line_size, int16_t *block)
  39. {
  40.     ff_j_rev_dct_arm (block);
  41.     ff_put_pixels_clamped(block, dest, line_size);
  42. }
  43. static void j_rev_dct_arm_add(uint8_t *dest, int line_size, int16_t *block)
  44. {
  45.     ff_j_rev_dct_arm (block);
  46.     ff_add_pixels_clamped(block, dest, line_size);
  47. }
  48. static void simple_idct_arm_put(uint8_t *dest, int line_size, int16_t *block)
  49. {
  50.     ff_simple_idct_arm (block);
  51.     ff_put_pixels_clamped(block, dest, line_size);
  52. }
  53. static void simple_idct_arm_add(uint8_t *dest, int line_size, int16_t *block)
  54. {
  55.     ff_simple_idct_arm (block);
  56.     ff_add_pixels_clamped(block, dest, line_size);
  57. }
  58.  
  59. av_cold void ff_dsputil_init_arm(DSPContext *c, AVCodecContext *avctx)
  60. {
  61.     int cpu_flags = av_get_cpu_flags();
  62.  
  63.     ff_put_pixels_clamped = c->put_pixels_clamped;
  64.     ff_add_pixels_clamped = c->add_pixels_clamped;
  65.  
  66.     if (!avctx->lowres && avctx->bits_per_raw_sample <= 8) {
  67.         if(avctx->idct_algo == FF_IDCT_AUTO ||
  68.            avctx->idct_algo == FF_IDCT_ARM){
  69.             c->idct_put              = j_rev_dct_arm_put;
  70.             c->idct_add              = j_rev_dct_arm_add;
  71.             c->idct                  = ff_j_rev_dct_arm;
  72.             c->idct_permutation_type = FF_LIBMPEG2_IDCT_PERM;
  73.         } else if (avctx->idct_algo == FF_IDCT_SIMPLEARM){
  74.             c->idct_put              = simple_idct_arm_put;
  75.             c->idct_add              = simple_idct_arm_add;
  76.             c->idct                  = ff_simple_idct_arm;
  77.             c->idct_permutation_type = FF_NO_IDCT_PERM;
  78.         }
  79.     }
  80.  
  81.     c->add_pixels_clamped = ff_add_pixels_clamped_arm;
  82.  
  83.     if (have_armv5te(cpu_flags)) ff_dsputil_init_armv5te(c, avctx);
  84.     if (have_armv6(cpu_flags))   ff_dsputil_init_armv6(c, avctx);
  85.     if (have_neon(cpu_flags))    ff_dsputil_init_neon(c, avctx);
  86. }
  87.