diff options
Diffstat (limited to 'ffmpeg/libavcodec/mdct_fixed.c')
| -rw-r--r-- | ffmpeg/libavcodec/mdct_fixed.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/ffmpeg/libavcodec/mdct_fixed.c b/ffmpeg/libavcodec/mdct_fixed.c deleted file mode 100644 index 2ee29b6..0000000 --- a/ffmpeg/libavcodec/mdct_fixed.c +++ /dev/null @@ -1,65 +0,0 @@ -/* - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#define CONFIG_FFT_FLOAT 0 -#define CONFIG_FFT_FIXED_32 0 -#include "mdct_template.c" - -/* same as ff_mdct_calcw_c with double-width unscaled output */ -void ff_mdct_calcw_c(FFTContext *s, FFTDouble *out, const FFTSample *input) -{ - int i, j, n, n8, n4, n2, n3; - FFTDouble re, im; - const uint16_t *revtab = s->revtab; - const FFTSample *tcos = s->tcos; - const FFTSample *tsin = s->tsin; - FFTComplex *x = s->tmp_buf; - FFTDComplex *o = (FFTDComplex *)out; - - n = 1 << s->mdct_bits; - n2 = n >> 1; - n4 = n >> 2; - n8 = n >> 3; - n3 = 3 * n4; - - /* pre rotation */ - for(i=0;i<n8;i++) { - re = RSCALE(-input[2*i+n3] - input[n3-1-2*i]); - im = RSCALE(-input[n4+2*i] + input[n4-1-2*i]); - j = revtab[i]; - CMUL(x[j].re, x[j].im, re, im, -tcos[i], tsin[i]); - - re = RSCALE( input[2*i] - input[n2-1-2*i]); - im = RSCALE(-input[n2+2*i] - input[ n-1-2*i]); - j = revtab[n8 + i]; - CMUL(x[j].re, x[j].im, re, im, -tcos[n8 + i], tsin[n8 + i]); - } - - s->fft_calc(s, x); - - /* post rotation */ - for(i=0;i<n8;i++) { - FFTDouble r0, i0, r1, i1; - CMULL(i1, r0, x[n8-i-1].re, x[n8-i-1].im, -tsin[n8-i-1], -tcos[n8-i-1]); - CMULL(i0, r1, x[n8+i ].re, x[n8+i ].im, -tsin[n8+i ], -tcos[n8+i ]); - o[n8-i-1].re = r0; - o[n8-i-1].im = i0; - o[n8+i ].re = r1; - o[n8+i ].im = i1; - } -} |
