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