supereq plugin prototype

1 files changed, 105 insertions, 0 deletions

diff --git a/plugins/supereq/supereq.c b/plugins/supereq/supereq.c
new file mode 100644
index 00000000..d3509312
--- /dev/null
+++ b/plugins/supereq/supereq.c
@@ -0,0 +1,105 @@
+/*
+    DeaDBeeF - ultimate music player for GNU/Linux systems with X11
+    Copyright (C) 2009-2010 Alexey Yakovenko <waker@users.sourceforge.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 "../../deadbeef.h"
+#include "supereq.h"
+
+static DB_functions_t *deadbeef;
+
+void *paramlist_alloc (void);
+void paramlist_free (void *);
+void equ_makeTable(float *lbc,float *rbc,void *param,float fs);
+int equ_modifySamples(char *buf,int nsamples,int nch,int bps);
+void equ_clearbuf(int bps,int srate);
+void equ_init(int wb);
+void equ_quit(void);
+
+float last_srate = 0;
+int last_nch = 0, last_bps = 0;
+float lbands[18] = {1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0};
+float rbands[18] = {1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0,1.0};
+void *paramsroot;
+
+int
+supereq_plugin_start (void) {
+    equ_init (14);
+    paramsroot = paramlist_alloc ();
+    return 0;
+}
+
+int
+supereq_plugin_stop (void) {
+    equ_quit ();
+    paramlist_free (paramsroot);
+    return 0;
+}
+
+
+int
+supereq_process_int16 (int16_t *samples, int nsamples, int nch, int bps, int srate) {
+	if ((nch != 1 && nch != 2) || (bps != 8 && bps != 16 && bps != 24)) return nsamples;
+	if (last_srate != srate) {
+        equ_makeTable (lbands, rbands, paramsroot, srate);
+		last_srate = srate;
+		last_nch = nch;
+		last_bps = bps;
+		equ_clearbuf(bps,srate);
+    }
+	else if (last_nch != nch || last_bps != bps) {
+		last_nch = nch;
+		last_bps = bps;
+		equ_clearbuf(bps,srate);
+    }
+	equ_modifySamples((char *)samples,nsamples,nch,bps);
+	return nsamples;
+}
+
+float
+supereq_get_band (int band) {
+    return lbands[band];
+}
+
+void
+supereq_set_band (int band, float value) {
+    last_srate = 0;
+    lbands[band] = rbands[band] = value;
+}
+
+static DB_supereq_dsp_t plugin = {
+    .dsp.plugin.api_vmajor = DB_API_VERSION_MAJOR,
+    .dsp.plugin.api_vminor = DB_API_VERSION_MINOR,
+    .dsp.plugin.type = DB_PLUGIN_DSP,
+    .dsp.plugin.id = "supereq",
+    .dsp.plugin.name = "SuperEQ",
+    .dsp.plugin.descr = "equalizer plugin using SuperEQ library by Naoki Shibata",
+    .dsp.plugin.author = "Alexey Yakovenko",
+    .dsp.plugin.email = "waker@users.sourceforge.net",
+    .dsp.plugin.website = "http://deadbeef.sf.net",
+    .dsp.plugin.start = supereq_plugin_start,
+    .dsp.plugin.stop = supereq_plugin_stop,
+//  .dsp.plugin.configdialog = settings_dlg,
+    .dsp.process_int16 = supereq_process_int16,
+    .get_band = supereq_get_band,
+    .set_band = supereq_set_band,
+};
+
+DB_plugin_t *
+supereq_load (DB_functions_t *api) {
+    deadbeef = api;
+    return DB_PLUGIN (&plugin);
+}