vdr/ac3dec/srfft_kni_c.c
Klaus Schmidinger efea0f64d0 Version 0.91
- Fixed displaying colored button texts that are too long.
- Suppressing replay progress display when replaying a DVD.
- Updated channels.conf.cable (thanks to Uwe Scheffler).
- Updated French OSD texts (thanks to Jean-Claude Repetto).
- Improved AC3 decoding when replaying DVDs (thanks to Matjaz Thaler).
- Fixed handling DVB card indexes when using only one card in a multi-card
  system.
- Changed the 'Eject DVD' button text to a simple 'Eject' (the German text
  was too long...).
- Made the font file generation more stable (thanks to Artur Skawina).
- Changed the default value for the "DiSEqC" setup parameter to "off".
- The new command line option '-E' can be used to define where the EPG data
  shall be written to. This is especially useful if VDR runs in a system
  that turns off the video disk when it is not used, and therefore needs
  to write the EPG file to a ramdisk (or turn off writing it alltogether).
  See 'vdr --help' for details.
- Making sure the disk is up and running before starting recording (this
  is important for systems that turn off the video disk when it is not used).
- Added the "Jump" function in replay mode (thanks to Stefan Huelswitt).
  See the description of the "Red" key in MANUAL under "Replay Control" for
  details.
- Fixed displaying editing marks when toggling a mark in "pause" mode.
- If there is no free DVB device to record, the log message will now be given
  only once.
- Made I/O more robust by handling EINTR (thanks to Werner Fink).
2001-08-12 18:00:00 +02:00

94 lines
2.9 KiB
C

/*
* srfft_kni.c
*
* Copyright (C) Yuqing Deng <Yuqing_Deng@brown.edu> - April 2000
*
* 64 and 128 point split radix fft for ac3dec
*
* The algorithm is desribed in the book:
* "Computational Frameworks of the Fast Fourier Transform".
*
* The ideas and the the organization of code borrowed from djbfft written by
* D. J. Bernstein <djb@cr.py.to>. djbff can be found at
* http://cr.yp.to/djbfft.html.
*
* srfft.c is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* srfft.c 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifdef __i386__
#include <stdio.h>
#include "srfft_kni.h"
#include "srfftp.h"
void fft_64p_kni(complex_t *a)
{
fft_8_kni(&a[0]); fft_4_kni(&a[8]); fft_4_kni(&a[12]);
fft_asmb_kni(2, &a[0], &a[8], &delta16[0], &delta16_3[0]);
fft_8_kni(&a[16]), fft_8_kni(&a[24]);
fft_asmb_kni(4, &a[0], &a[16],&delta32[0], &delta32_3[0]);
fft_8_kni(&a[32]); fft_4_kni(&a[40]); fft_4_kni(&a[44]);
fft_asmb_kni(2, &a[32], &a[40], &delta16[0], &delta16_3[0]);
fft_8_kni(&a[48]); fft_4_kni(&a[56]); fft_4_kni(&a[60]);
fft_asmb_kni(2, &a[48], &a[56], &delta16[0], &delta16_3[0]);
fft_asmb_kni(8, &a[0], &a[32],&delta64[0], &delta64_3[0]);
}
void fft_128p_kni(complex_t *a)
{
fft_8_kni(&a[0]); fft_4_kni(&a[8]); fft_4_kni(&a[12]);
fft_asmb_kni(2, &a[0], &a[8], &delta16[0], &delta16_3[0]);
fft_8_kni(&a[16]), fft_8_kni(&a[24]);
fft_asmb_kni(4, &a[0], &a[16],&delta32[0], &delta32_3[0]);
fft_8_kni(&a[32]); fft_4_kni(&a[40]); fft_4_kni(&a[44]);
fft_asmb_kni(2, &a[32], &a[40], &delta16[0], &delta16_3[0]);
fft_8_kni(&a[48]); fft_4_kni(&a[56]); fft_4_kni(&a[60]);
fft_asmb_kni(2, &a[48], &a[56], &delta16[0], &delta16_3[0]);
fft_asmb_kni(8, &a[0], &a[32],&delta64[0], &delta64_3[0]);
fft_8_kni(&a[64]); fft_4_kni(&a[72]); fft_4_kni(&a[76]);
/* fft_16(&a[64]); */
fft_asmb_kni(2, &a[64], &a[72], &delta16[0], &delta16_3[0]);
fft_8_kni(&a[80]); fft_8_kni(&a[88]);
/* fft_32(&a[64]); */
fft_asmb_kni(4, &a[64], &a[80],&delta32[0], &delta32_3[0]);
fft_8_kni(&a[96]); fft_4_kni(&a[104]), fft_4_kni(&a[108]);
/* fft_16(&a[96]); */
fft_asmb_kni(2, &a[96], &a[104], &delta16[0], &delta16_3[0]);
fft_8_kni(&a[112]), fft_8_kni(&a[120]);
/* fft_32(&a[96]); */
fft_asmb_kni(4, &a[96], &a[112], &delta32[0], &delta32_3[0]);
/* fft_128(&a[0]); */
fft_asmb_kni(16, &a[0], &a[64], &delta128[0], &delta128_3[0]);
}
#endif