mirror of https://github.com/VDR4Arch/vdr.git
90 lines
2.8 KiB
C
90 lines
2.8 KiB
C
/*
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* imdct.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 <mm_accel.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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#include "downmix_i386.h"
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#ifdef HAVE_KNI
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#include "downmix_kni.h"
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#endif
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void (*downmix_3f_2r_to_2ch)(float *samples, dm_par_t * dm_par);
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void (*downmix_3f_1r_to_2ch)(float *samples, dm_par_t * dm_par);
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void (*downmix_2f_2r_to_2ch)(float *samples, dm_par_t * dm_par);
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void (*downmix_2f_1r_to_2ch)(float *samples, dm_par_t * dm_par);
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void (*downmix_3f_0r_to_2ch)(float *samples, dm_par_t * dm_par);
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void (*stream_sample_2ch_to_s16)(int16_t *s16_samples, float *left, float *right);
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void (*stream_sample_1ch_to_s16)(int16_t *s16_samples, float *center);
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void downmix_init()
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{
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#ifdef __i386__
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#ifdef HAVE_KNI
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uint32_t accel = mm_accel ();
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// other dowmixing should go here too
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if (accel & MM_ACCEL_X86_MMXEXT) {
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dprintf("Using SSE for downmix\n");
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downmix_3f_2r_to_2ch = downmix_3f_2r_to_2ch_kni;
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downmix_2f_2r_to_2ch = downmix_2f_2r_to_2ch_kni;
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downmix_3f_1r_to_2ch = downmix_3f_1r_to_2ch_kni;
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downmix_2f_1r_to_2ch = downmix_2f_1r_to_2ch_kni;
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downmix_3f_0r_to_2ch = downmix_3f_0r_to_2ch_kni;
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stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_kni;
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stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_kni;
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} else if (accel & MM_ACCEL_X86_3DNOW) {
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} else
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#endif
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#endif
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{
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downmix_3f_2r_to_2ch = downmix_3f_2r_to_2ch_c;
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downmix_2f_2r_to_2ch = downmix_2f_2r_to_2ch_c;
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downmix_3f_1r_to_2ch = downmix_3f_1r_to_2ch_c;
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downmix_2f_1r_to_2ch = downmix_2f_1r_to_2ch_c;
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downmix_3f_0r_to_2ch = downmix_3f_0r_to_2ch_c;
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#ifdef __i386__
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#if 1
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stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_c;
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stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_c;
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#else
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stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_i386;
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stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_i386;
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#endif
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#else
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stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_c;
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stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_c;
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#endif
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}
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}
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