summaryrefslogtreecommitdiff
path: root/libs/ardour/mix.cc
diff options
context:
space:
mode:
authorTaybin Rutkin <taybin@taybin.com>2005-09-24 19:13:41 +0000
committerTaybin Rutkin <taybin@taybin.com>2005-09-24 19:13:41 +0000
commit8af0757b61990767f2a85e68f535a5af9976fd79 (patch)
treef9e06fe12cac866d658a2e7074a61aa74d12f68f /libs/ardour/mix.cc
parentf9546e5c76afa101e9dbe8a057e72463b03430e5 (diff)
libardour added.
git-svn-id: svn://localhost/trunk/ardour2@17 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/mix.cc')
-rw-r--r--libs/ardour/mix.cc149
1 files changed, 149 insertions, 0 deletions
diff --git a/libs/ardour/mix.cc b/libs/ardour/mix.cc
new file mode 100644
index 0000000000..6d268dfeba
--- /dev/null
+++ b/libs/ardour/mix.cc
@@ -0,0 +1,149 @@
+/*
+ Copyright (C) 2000-2005 Paul Davis,
+ Copyright (C) 2005 Sampo Savolainen
+
+ 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>
+
+#if defined (ARCH_X86) && defined (BUILD_SSE_OPTIMIZATIONS)
+
+// Debug wrappers
+
+float
+debug_compute_peak (ARDOUR::Sample *buf, jack_nframes_t nsamples, float current)
+{
+ if ( ((int)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 ( ((int)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 ( ((int)dst & 15) != 0) {
+ cerr << "mix_buffers_with_gain(): dst unaligned!" << endl;
+ }
+
+ if ( ((int)dst & 15) != ((int)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 ( ((int)dst & 15) != 0) {
+ cerr << "mix_buffers_no_gain(): dst unaligned!" << endl;
+ }
+
+ if ( ((int)dst & 15) != ((int)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__)
+#include <Accelerate/Accelerate.h>
+
+float
+veclib_compute_peak (ARDOUR::Sample *buf, jack_nframes_t nsamples, float current)
+{
+ vDSP_maxv(buf, 1, &current, nsamples);
+ return current;
+}
+
+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
+
+