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/*
* imdct.c
*
* Copyright (C) Aaron Holtzman - May 1999
*
* This file is part of ac3dec, a free Dolby AC-3 stream decoder.
*
* ac3dec 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.
*
* ac3dec 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.
*
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <mm_accel.h>
#include "ac3.h"
#include "ac3_internal.h"
#include "debug.h"
#include "downmix.h"
#include "downmix_c.h"
#include "downmix_i386.h"
#ifdef HAVE_KNI
#include "downmix_kni.h"
#endif
void (*downmix_3f_2r_to_2ch)(float *samples, dm_par_t * dm_par);
void (*downmix_3f_1r_to_2ch)(float *samples, dm_par_t * dm_par);
void (*downmix_2f_2r_to_2ch)(float *samples, dm_par_t * dm_par);
void (*downmix_2f_1r_to_2ch)(float *samples, dm_par_t * dm_par);
void (*downmix_3f_0r_to_2ch)(float *samples, dm_par_t * dm_par);
void (*stream_sample_2ch_to_s16)(int16_t *s16_samples, float *left, float *right);
void (*stream_sample_1ch_to_s16)(int16_t *s16_samples, float *center);
void downmix_init()
{
#ifdef __i386__
#ifdef HAVE_KNI
uint32_t accel = mm_accel ();
// other dowmixing should go here too
if (accel & MM_ACCEL_X86_MMXEXT) {
dprintf("Using SSE for downmix\n");
downmix_3f_2r_to_2ch = downmix_3f_2r_to_2ch_kni;
downmix_2f_2r_to_2ch = downmix_2f_2r_to_2ch_kni;
downmix_3f_1r_to_2ch = downmix_3f_1r_to_2ch_kni;
downmix_2f_1r_to_2ch = downmix_2f_1r_to_2ch_kni;
downmix_3f_0r_to_2ch = downmix_3f_0r_to_2ch_kni;
stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_kni;
stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_kni;
} else if (accel & MM_ACCEL_X86_3DNOW) {
} else
#endif
#endif
{
downmix_3f_2r_to_2ch = downmix_3f_2r_to_2ch_c;
downmix_2f_2r_to_2ch = downmix_2f_2r_to_2ch_c;
downmix_3f_1r_to_2ch = downmix_3f_1r_to_2ch_c;
downmix_2f_1r_to_2ch = downmix_2f_1r_to_2ch_c;
downmix_3f_0r_to_2ch = downmix_3f_0r_to_2ch_c;
#ifdef __i386__
#if 1
stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_c;
stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_c;
#else
stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_i386;
stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_i386;
#endif
#else
stream_sample_2ch_to_s16 = stream_sample_2ch_to_s16_c;
stream_sample_1ch_to_s16 = stream_sample_1ch_to_s16_c;
#endif
}
}
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