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/*
Copyright (C) 2000-2005 Paul Davis
This program 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 of the License, or
(at your option) any later version.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <cmath>
#include <ardour/types.h>
#include <ardour/utils.h>
#include <ardour/mix.h>
#include <stdint.h>
#if defined (ARCH_X86) && defined (BUILD_SSE_OPTIMIZATIONS)
// Debug wrappers
float
debug_compute_peak (ARDOUR::Sample *buf, jack_nframes_t nsamples, float current)
{
if ( ((intptr_t)buf % 16) != 0) {
cerr << "compute_peak(): buffer unaligned!" << endl;
}
return x86_sse_compute_peak(buf, nsamples, current);
}
void
debug_apply_gain_to_buffer (ARDOUR::Sample *buf, jack_nframes_t nframes, float gain)
{
if ( ((intptr_t)buf % 16) != 0) {
cerr << "apply_gain_to_buffer(): buffer unaligned!" << endl;
}
x86_sse_apply_gain_to_buffer(buf, nframes, gain);
}
void
debug_mix_buffers_with_gain (ARDOUR::Sample *dst, ARDOUR::Sample *src, jack_nframes_t nframes, float gain)
{
if ( ((intptr_t)dst & 15) != 0) {
cerr << "mix_buffers_with_gain(): dst unaligned!" << endl;
}
if ( ((intptr_t)dst & 15) != ((intptr_t)src & 15) ) {
cerr << "mix_buffers_with_gain(): dst & src don't have the same alignment!" << endl;
mix_buffers_with_gain(dst, src, nframes, gain);
} else {
x86_sse_mix_buffers_with_gain(dst, src, nframes, gain);
}
}
void
debug_mix_buffers_no_gain (ARDOUR::Sample *dst, ARDOUR::Sample *src, jack_nframes_t nframes)
{
if ( ((intptr_t)dst & 15) != 0) {
cerr << "mix_buffers_no_gain(): dst unaligned!" << endl;
}
if ( ((intptr_t)dst & 15) != ((intptr_t)src & 15) ) {
cerr << "mix_buffers_no_gain(): dst & src don't have the same alignment!" << endl;
mix_buffers_no_gain(dst, src, nframes);
} else {
x86_sse_mix_buffers_no_gain(dst, src, nframes);
}
}
#endif
float
compute_peak (ARDOUR::Sample *buf, jack_nframes_t nsamples, float current)
{
for (jack_nframes_t i = 0; i < nsamples; ++i) {
current = f_max (current, fabsf (buf[i]));
}
return current;
}
void
apply_gain_to_buffer (ARDOUR::Sample *buf, jack_nframes_t nframes, float gain)
{
for (jack_nframes_t i=0; i<nframes; i++)
buf[i] *= gain;
}
void
mix_buffers_with_gain (ARDOUR::Sample *dst, ARDOUR::Sample *src, jack_nframes_t nframes, float gain)
{
for (jack_nframes_t i = 0; i < nframes; i++) {
dst[i] += src[i] * gain;
}
}
void
mix_buffers_no_gain (ARDOUR::Sample *dst, ARDOUR::Sample *src, jack_nframes_t nframes)
{
for (jack_nframes_t i=0; i < nframes; i++) {
dst[i] += src[i];
}
}
#if defined (__APPLE__) && defined (BUILD_VECLIB_OPTIMIZATIONS)
#include <Accelerate/Accelerate.h>
float
veclib_compute_peak (ARDOUR::Sample *buf, jack_nframes_t nsamples, float current)
{
float tmpmax = 0.0f;
vDSP_maxmgv(buf, 1, &tmpmax, nsamples);
return f_max(current, tmpmax);
}
void
veclib_apply_gain_to_buffer (ARDOUR::Sample *buf, jack_nframes_t nframes, float gain)
{
vDSP_vsmul(buf, 1, &gain, buf, 1, nframes);
}
void
veclib_mix_buffers_with_gain (ARDOUR::Sample *dst, ARDOUR::Sample *src, jack_nframes_t nframes, float gain)
{
vDSP_vsma(src, 1, &gain, dst, 1, dst, 1, nframes);
}
void
veclib_mix_buffers_no_gain (ARDOUR::Sample *dst, ARDOUR::Sample *src, jack_nframes_t nframes)
{
// It seems that a vector mult only operation does not exist...
float gain = 1.0f;
vDSP_vsma(src, 1, &gain, dst, 1, dst, 1, nframes);
}
#endif
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