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/*
DeaDBeeF - ultimate music player for GNU/Linux systems with X11
Copyright (C) 2009-2013 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 <stdlib.h>
#include <string.h>
#include <assert.h>
#include "../../deadbeef.h"
enum {
M2S_PARAM_LEFTMIX,
M2S_PARAM_RIGHTMIX,
M2S_PARAM_COUNT
};
static DB_functions_t *deadbeef;
static DB_dsp_t plugin;
typedef struct {
ddb_dsp_context_t ctx;
float leftmix;
float rightmix;
} ddb_m2s_t;
ddb_dsp_context_t*
m2s_open (void) {
ddb_m2s_t *m2s = malloc (sizeof (ddb_m2s_t));
DDB_INIT_DSP_CONTEXT (m2s,ddb_m2s_t,&plugin);
// initialize
m2s->leftmix = 1;
m2s->rightmix = 1;
return (ddb_dsp_context_t *)m2s;
}
void
m2s_close (ddb_dsp_context_t *ctx) {
ddb_m2s_t *m2s = (ddb_m2s_t *)ctx;
// free instance-specific allocations
free (m2s);
}
void
m2s_reset (ddb_dsp_context_t *ctx) {
// use this method to flush dsp buffers, reset filters, etc
}
int
m2s_process (ddb_dsp_context_t *ctx, float *samples, int nframes, int maxframes, ddb_waveformat_t *fmt, float *r) {
if (fmt->channels >= 2) {
return nframes;
}
ddb_m2s_t *m2s = (ddb_m2s_t *)ctx;
for (int i = nframes-1; i >= 0; i--) {
samples[i*2+1] = samples[i] * m2s->rightmix;
samples[i*2+0] = samples[i] * m2s->leftmix;
}
fmt->channels = 2;
fmt->channelmask = 3;
return nframes;
}
const char *
m2s_get_param_name (int p) {
switch (p) {
case M2S_PARAM_LEFTMIX:
return "Left mix";
case M2S_PARAM_RIGHTMIX:
return "Right mix";
default:
fprintf (stderr, "m2s_param_name: invalid param index (%d)\n", p);
}
return NULL;
}
int
m2s_num_params (void) {
return M2S_PARAM_COUNT;
}
void
m2s_set_param (ddb_dsp_context_t *ctx, int p, const char *val) {
ddb_m2s_t *m2s = (ddb_m2s_t *)ctx;
switch (p) {
case M2S_PARAM_LEFTMIX:
m2s->leftmix = atof (val);
break;
case M2S_PARAM_RIGHTMIX:
m2s->rightmix = atof (val);
break;
default:
fprintf (stderr, "m2s_set_param: invalid param index (%d)\n", p);
}
}
void
m2s_get_param (ddb_dsp_context_t *ctx, int p, char *val, int sz) {
ddb_m2s_t *m2s = (ddb_m2s_t *)ctx;
switch (p) {
case M2S_PARAM_LEFTMIX:
snprintf (val, sz, "%f", m2s->leftmix);
break;
case M2S_PARAM_RIGHTMIX:
snprintf (val, sz, "%f", m2s->rightmix);
break;
default:
fprintf (stderr, "m2s_get_param: invalid param index (%d)\n", p);
}
}
static const char settings_dlg[] =
"property \"Left mix:\" hscale[0,1,0.001] 0 1;\n"
"property \"Right mix:\" hscale[0,1,0.001] 1 1;\n"
;
static DB_dsp_t plugin = {
.plugin.api_vmajor = 1,
.plugin.api_vminor = 0,
.open = m2s_open,
.close = m2s_close,
.process = m2s_process,
.plugin.version_major = 1,
.plugin.version_minor = 0,
.plugin.type = DB_PLUGIN_DSP,
.plugin.id = "m2s",
.plugin.name = "Mono to stereo",
.plugin.descr = "DSP plugin to convert mono to stereo",
.plugin.copyright =
"Copyright (C) 2009-2013 Alexey Yakovenko <waker@users.sourceforge.net>\n"
"\n"
"This program is free software; you can redistribute it and/or\n"
"modify it under the terms of the GNU General Public License\n"
"as published by the Free Software Foundation; either version 2\n"
"of the License, or (at your option) any later version.\n"
"\n"
"This program is distributed in the hope that it will be useful,\n"
"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
"GNU General Public License for more details.\n"
"\n"
"You should have received a copy of the GNU General Public License\n"
"along with this program; if not, write to the Free Software\n"
"Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.\n"
,
.plugin.website = "http://deadbeef.sf.net",
.num_params = m2s_num_params,
.get_param_name = m2s_get_param_name,
.set_param = m2s_set_param,
.get_param = m2s_get_param,
.reset = m2s_reset,
.configdialog = settings_dlg,
};
DB_plugin_t *
ddb_mono2stereo_load (DB_functions_t *f) {
deadbeef = f;
return &plugin.plugin;
}
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