LCOV - code coverage report
Current view: top level - src/libavcodec/x86 - fft_init.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 13 14 92.9 %
Date: 2017-01-21 09:32:20 Functions: 1 1 100.0 %

          Line data    Source code
       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             : 
      21             : #include "libavutil/attributes.h"
      22             : #include "libavutil/cpu.h"
      23             : #include "libavutil/x86/cpu.h"
      24             : 
      25             : #include "fft.h"
      26             : 
      27        2708 : av_cold void ff_fft_init_x86(FFTContext *s)
      28             : {
      29        2708 :     int cpu_flags = av_get_cpu_flags();
      30             : 
      31        2708 :     if (s->nbits > 16)
      32           0 :         return;
      33             : 
      34             : #if ARCH_X86_32
      35             :     if (EXTERNAL_AMD3DNOW(cpu_flags)) {
      36             :         s->imdct_calc = ff_imdct_calc_3dnow;
      37             :         s->imdct_half = ff_imdct_half_3dnow;
      38             :         s->fft_calc   = ff_fft_calc_3dnow;
      39             :     }
      40             : 
      41             :     if (EXTERNAL_AMD3DNOWEXT(cpu_flags)) {
      42             :         s->imdct_calc = ff_imdct_calc_3dnowext;
      43             :         s->imdct_half = ff_imdct_half_3dnowext;
      44             :         s->fft_calc   = ff_fft_calc_3dnowext;
      45             :     }
      46             : #endif /* ARCH_X86_32 */
      47             : 
      48        2708 :     if (EXTERNAL_SSE(cpu_flags)) {
      49         256 :         s->imdct_calc  = ff_imdct_calc_sse;
      50         256 :         s->imdct_half  = ff_imdct_half_sse;
      51         256 :         s->fft_permute = ff_fft_permute_sse;
      52         256 :         s->fft_calc    = ff_fft_calc_sse;
      53         256 :         s->fft_permutation = FF_FFT_PERM_SWAP_LSBS;
      54             :     }
      55             : 
      56        2708 :     if (EXTERNAL_AVX_FAST(cpu_flags) && s->nbits >= 5) {
      57         213 :         s->imdct_half      = ff_imdct_half_avx;
      58         213 :         s->fft_calc        = ff_fft_calc_avx;
      59         213 :         s->fft_permutation = FF_FFT_PERM_AVX;
      60             :     }
      61             : }

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