mirror of
https://github.com/vdr-projects/vdr.git
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efea0f64d0
- 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).
162 lines
4.0 KiB
C
162 lines
4.0 KiB
C
/*
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* downmix_c.c
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*
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* Copyright (C) Aaron Holtzman - May 1999
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*
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* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
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*
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* ac3dec is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* ac3dec is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Make; see the file COPYING. If not, write to
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* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <math.h>
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#include "ac3.h"
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#include "ac3_internal.h"
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#include "debug.h"
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#include "downmix.h"
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#include "downmix_c.h"
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void downmix_3f_2r_to_2ch_c (float *samples, dm_par_t *dm_par)
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{
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int i;
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float *left, *right, *center, *left_sur, *right_sur;
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float left_tmp, right_tmp;
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left = samples;
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right = samples + 256 * 2;
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center = samples + 256;
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left_sur = samples + 256 * 3;
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right_sur = samples + 256 * 4;
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for (i=0; i < 256; i++) {
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#if defined DOLBY_SURROUND
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left_tmp = dm_par->unit * *left + dm_par->clev * *center - dm_par->slev * (*left_sur + *right_sur);
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right_tmp= dm_par->unit * *right++ + dm_par->clev * *center + dm_par->slev * (*left_sur++ + *right_sur++);
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#else
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left_tmp = dm_par->unit * *left + dm_par->clev * *center + dm_par->slev * *left_sur++;
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right_tmp= dm_par->unit * *right++ + dm_par->clev * *center + dm_par->slev * *right_sur++;
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#endif
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*left++ = left_tmp;
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*center++ = right_tmp;
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}
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}
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void downmix_2f_2r_to_2ch_c (float *samples, dm_par_t *dm_par)
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{
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int i;
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float *left, *right, *left_sur, *right_sur;
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float left_tmp, right_tmp;
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left = &samples[0];
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right = &samples[256];
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left_sur = &samples[512];
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right_sur = &samples[768];
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for (i = 0; i < 256; i++) {
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left_tmp = dm_par->unit * *left + dm_par->slev * *left_sur++;
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right_tmp= dm_par->unit * *right + dm_par->slev * *right_sur++;
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*left++ = left_tmp;
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*right++ = right_tmp;
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}
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}
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void downmix_3f_1r_to_2ch_c (float *samples, dm_par_t *dm_par)
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{
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int i;
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float *left, *right, *center, *right_sur;
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float left_tmp, right_tmp;
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left = &samples[0];
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right = &samples[512];
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center = &samples[256];
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right_sur = &samples[768];
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for (i = 0; i < 256; i++) {
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left_tmp = dm_par->unit * *left + dm_par->clev * *center - dm_par->slev * *right_sur;
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right_tmp= dm_par->unit * *right++ + dm_par->clev * *center + dm_par->slev * *right_sur++;
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*left++ = left_tmp;
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*center++ = right_tmp;
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}
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}
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void downmix_2f_1r_to_2ch_c (float *samples, dm_par_t *dm_par)
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{
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int i;
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float *left, *right, *right_sur;
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float left_tmp, right_tmp;
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left = &samples[0];
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right = &samples[256];
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right_sur = &samples[512];
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for (i = 0; i < 256; i++) {
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left_tmp = dm_par->unit * *left - dm_par->slev * *right_sur;
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right_tmp= dm_par->unit * *right + dm_par->slev * *right_sur++;
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*left++ = left_tmp;
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*right++ = right_tmp;
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}
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}
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void downmix_3f_0r_to_2ch_c (float *samples, dm_par_t *dm_par)
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{
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int i;
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float *left, *right, *center;
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float left_tmp, right_tmp;
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left = &samples[0];
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center = &samples[256];
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right = &samples[512];
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for (i = 0; i < 256; i++) {
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left_tmp = dm_par->unit * *left + dm_par->clev * *center;
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right_tmp= dm_par->unit * *right++ + dm_par->clev * *center;
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*left++ = left_tmp;
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*center++ = right_tmp;
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}
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}
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void stream_sample_2ch_to_s16_c (int16_t *s16_samples, float *left, float *right)
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{
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int i;
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for (i=0; i < 256; i++) {
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*s16_samples++ = (int16_t) *left++;
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*s16_samples++ = (int16_t) *right++;
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}
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}
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void stream_sample_1ch_to_s16_c (int16_t *s16_samples, float *center)
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{
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int i;
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float tmp;
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for (i=0; i < 256; i++) {
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*s16_samples++ = tmp = (int16_t) (0.7071f * *center++);
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*s16_samples++ = tmp;
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}
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}
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