13
0
livetrax/libs/ardour/mix.cc
Robin Gareus 32be8aa96a
Fix veclib_find_peaks interface
vDSP_maxv, vDSP_minv set the return value to -INFINITY
or INFINITY respectively before starting to process.

Ardour expect the value to be input values to be part of the set.

https://developer.apple.com/documentation/accelerate/1450621-vdsp_maxv?language=objc
https://developer.apple.com/documentation/accelerate/1450267-vdsp_minv?language=objc
2023-03-30 01:04:40 +02:00

193 lines
5.0 KiB
C++

/*
* Copyright (C) 2005-2007 Taybin Rutkin <taybin@taybin.com>
* Copyright (C) 2006-2008 Doug McLain <doug@nostar.net>
* Copyright (C) 2006-2009 David Robillard <d@drobilla.net>
* Copyright (C) 2007-2015 Paul Davis <paul@linuxaudiosystems.com>
* Copyright (C) 2009-2010 Carl Hetherington <carl@carlh.net>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <cmath>
#include "ardour/types.h"
#include "ardour/utils.h"
#include "ardour/mix.h"
#include "ardour/runtime_functions.h"
#include <stdint.h>
using std::min;
using std::max;
using namespace ARDOUR;
#if defined (ARCH_X86) && defined (BUILD_SSE_OPTIMIZATIONS)
// Debug wrappers
float
debug_compute_peak (const ARDOUR::Sample *buf, pframes_t nsamples, float current)
{
if ( ((intptr_t)buf % 16) != 0) {
std::cerr << "compute_peak(): buffer unaligned!" << std::endl;
}
return x86_sse_compute_peak(buf, nsamples, current);
}
void
debug_apply_gain_to_buffer (ARDOUR::Sample *buf, pframes_t nframes, float gain)
{
if ( ((intptr_t)buf % 16) != 0) {
std::cerr << "apply_gain_to_buffer(): buffer unaligned!" << std::endl;
}
x86_sse_apply_gain_to_buffer(buf, nframes, gain);
}
void
debug_mix_buffers_with_gain (ARDOUR::Sample *dst, const ARDOUR::Sample *src, pframes_t nframes, float gain)
{
if ( ((intptr_t)dst & 15) != 0) {
std::cerr << "mix_buffers_with_gain(): dst unaligned!" << std::endl;
}
if ( ((intptr_t)dst & 15) != ((intptr_t)src & 15) ) {
std::cerr << "mix_buffers_with_gain(): dst & src don't have the same alignment!" << std::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, const ARDOUR::Sample *src, pframes_t nframes)
{
if ( ((intptr_t)dst & 15) != 0) {
std::cerr << "mix_buffers_no_gain(): dst unaligned!" << std::endl;
}
if ( ((intptr_t)dst & 15) != ((intptr_t)src & 15) ) {
std::cerr << "mix_buffers_no_gain(): dst & src don't have the same alignment!" << std::endl;
mix_buffers_no_gain(dst, src, nframes);
} else {
x86_sse_mix_buffers_no_gain(dst, src, nframes);
}
}
#endif
float
default_compute_peak (const ARDOUR::Sample * buf, pframes_t nsamples, float current)
{
for (pframes_t i = 0; i < nsamples; ++i) {
current = f_max (current, fabsf (buf[i]));
}
return current;
}
void
default_find_peaks (const ARDOUR::Sample * buf, pframes_t nframes, float *minf, float *maxf)
{
pframes_t i;
float a, b;
a = *maxf;
b = *minf;
for (i = 0; i < nframes; i++)
{
a = max (buf[i], a);
b = min (buf[i], b);
}
*maxf = a;
*minf = b;
}
void
default_apply_gain_to_buffer (ARDOUR::Sample * buf, pframes_t nframes, float gain)
{
for (pframes_t i=0; i<nframes; i++)
buf[i] *= gain;
}
void
default_mix_buffers_with_gain (ARDOUR::Sample * dst, const ARDOUR::Sample * src, pframes_t nframes, float gain)
{
for (pframes_t i = 0; i < nframes; i++) {
dst[i] += src[i] * gain;
}
}
void
default_mix_buffers_no_gain (ARDOUR::Sample * dst, const ARDOUR::Sample * src, pframes_t nframes)
{
for (pframes_t i=0; i < nframes; i++) {
dst[i] += src[i];
}
}
void
default_copy_vector (ARDOUR::Sample * dst, const ARDOUR::Sample * src, pframes_t nframes)
{
memcpy(dst, src, nframes*sizeof(ARDOUR::Sample));
}
#if defined (__APPLE__) && defined (BUILD_VECLIB_OPTIMIZATIONS)
#include <Accelerate/Accelerate.h>
float
veclib_compute_peak (const ARDOUR::Sample * buf, pframes_t nsamples, float current)
{
float tmpmax = 0.0f;
vDSP_maxmgv(buf, 1, &tmpmax, nsamples);
return f_max(current, tmpmax);
}
void
veclib_find_peaks (const ARDOUR::Sample * buf, pframes_t nframes, float *min, float *max)
{
const float _min = *min;
const float _max = *max;
vDSP_maxv (const_cast<ARDOUR::Sample*>(buf), 1, max, nframes);
vDSP_minv (const_cast<ARDOUR::Sample*>(buf), 1, min, nframes);
*min = std::min (*min, _min);
*max = std::max (*max, _max);
}
void
veclib_apply_gain_to_buffer (ARDOUR::Sample * buf, pframes_t nframes, float gain)
{
vDSP_vsmul(buf, 1, &gain, buf, 1, nframes);
}
void
veclib_mix_buffers_with_gain (ARDOUR::Sample * dst, const ARDOUR::Sample * src, pframes_t nframes, float gain)
{
vDSP_vsma(src, 1, &gain, dst, 1, dst, 1, nframes);
}
void
veclib_mix_buffers_no_gain (ARDOUR::Sample * dst, const ARDOUR::Sample * src, pframes_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