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  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 "config.h"
  20. #include "libavutil/attributes.h"
  21. #include "libavutil/cpu.h"
  22. #include "libavutil/x86/cpu.h"
  23. #include "libavcodec/idctdsp.h"
  24. #include "libavcodec/xvididct.h"
  25.  
  26. #include "idctdsp.h"
  27. #include "xvididct.h"
  28.  
  29. #if ARCH_X86_32 && HAVE_YASM
  30. static void xvid_idct_mmx_put(uint8_t *dest, int line_size, short *block)
  31. {
  32.     ff_xvid_idct_mmx(block);
  33.     ff_put_pixels_clamped(block, dest, line_size);
  34. }
  35.  
  36. static void xvid_idct_mmx_add(uint8_t *dest, int line_size, short *block)
  37. {
  38.     ff_xvid_idct_mmx(block);
  39.     ff_add_pixels_clamped(block, dest, line_size);
  40. }
  41.  
  42. static void xvid_idct_mmxext_put(uint8_t *dest, int line_size, short *block)
  43. {
  44.     ff_xvid_idct_mmxext(block);
  45.     ff_put_pixels_clamped(block, dest, line_size);
  46. }
  47.  
  48. static void xvid_idct_mmxext_add(uint8_t *dest, int line_size, short *block)
  49. {
  50.     ff_xvid_idct_mmxext(block);
  51.     ff_add_pixels_clamped(block, dest, line_size);
  52. }
  53. #endif
  54.  
  55. av_cold void ff_xvid_idct_init_x86(IDCTDSPContext *c, AVCodecContext *avctx,
  56.                                    unsigned high_bit_depth)
  57. {
  58. #if HAVE_YASM
  59.     int cpu_flags = av_get_cpu_flags();
  60.  
  61.     if (high_bit_depth ||
  62.         !(avctx->idct_algo == FF_IDCT_AUTO ||
  63.           avctx->idct_algo == FF_IDCT_XVID))
  64.         return;
  65.  
  66. #if ARCH_X86_32
  67.     if (EXTERNAL_MMX(cpu_flags)) {
  68.         c->idct_put  = xvid_idct_mmx_put;
  69.         c->idct_add  = xvid_idct_mmx_add;
  70.         c->idct      = ff_xvid_idct_mmx;
  71.         c->perm_type = FF_IDCT_PERM_NONE;
  72.     }
  73.  
  74.     if (EXTERNAL_MMXEXT(cpu_flags)) {
  75.         c->idct_put  = xvid_idct_mmxext_put;
  76.         c->idct_add  = xvid_idct_mmxext_add;
  77.         c->idct      = ff_xvid_idct_mmxext;
  78.         c->perm_type = FF_IDCT_PERM_NONE;
  79.     }
  80. #endif
  81.  
  82.     if (EXTERNAL_SSE2(cpu_flags)) {
  83.         c->idct_put  = ff_xvid_idct_put_sse2;
  84.         c->idct_add  = ff_xvid_idct_add_sse2;
  85.         c->idct      = ff_xvid_idct_sse2;
  86.         c->perm_type = FF_IDCT_PERM_SSE2;
  87.     }
  88. #endif /* HAVE_YASM */
  89. }
  90.