diff options
Diffstat (limited to 'plugins/mono2stereo')
| -rw-r--r-- | plugins/mono2stereo/Makefile | 23 | ||||
| -rw-r--r-- | plugins/mono2stereo/mono2stereo.c | 176 |
2 files changed, 199 insertions, 0 deletions
diff --git a/plugins/mono2stereo/Makefile b/plugins/mono2stereo/Makefile new file mode 100644 index 00000000..067f074d --- /dev/null +++ b/plugins/mono2stereo/Makefile @@ -0,0 +1,23 @@ +CC=gcc + +CFLAGS+=-Wall -fPIC -D_GNU_SOURCE -std=c99 + +LDFLAGS+=-module -shared -lm + +SOURCES=mono2stereo.c + +OBJECTS=$(SOURCES:.c=.o) + +OUT=mono2stereo.so + +all: $(SOURCES) $(OUT) + +$(OUT): $(OBJECTS) + $(CC) $(LDFLAGS) $(OBJECTS) -o $@ + +.c.o: + $(CC) $(CFLAGS) $< -c -o $@ + +clean: + rm $(OBJECTS) $(OUT) + diff --git a/plugins/mono2stereo/mono2stereo.c b/plugins/mono2stereo/mono2stereo.c new file mode 100644 index 00000000..f10a9375 --- /dev/null +++ b/plugins/mono2stereo/mono2stereo.c @@ -0,0 +1,176 @@ +/* + DeaDBeeF - ultimate music player for GNU/Linux systems with X11 + Copyright (C) 2009-2011 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/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) 2009-2011 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" + , + .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 * +mono2stereo_load (DB_functions_t *f) { + deadbeef = f; + return &plugin.plugin; +} + |