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/* $Id: mixer.c,v 1.13 2009/12/13 17:05:07 khorben Exp $ */

static char _copyright[] =

/* This file is part of DeforaOS Desktop Mixer */

static char _license[] =

"This program is free software: you can redistribute it and/or modify\n"

"it under the terms of the GNU General Public License as published by\n"

"the Free Software Foundation, version 3 of the License.\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, see <http://www.gnu.org/licenses/>.";

#include <sys/ioctl.h>

#include <sys/audioio.h>

#include <fcntl.h>

#include <unistd.h>

#include <stdlib.h>

#include <errno.h>

#include <gtk/gtk.h>

#include <gdk/gdkkeysyms.h>

#include <Desktop.h>

#include "callbacks.h"

#include "mixer.h"

#include "../config.h"

/* Mixer */

/* private */

/* types */

typedef struct _MixerClass

{

int mixer_class;

audio_mixer_name_t label;

GtkWidget * hbox;

} MixerClass;

struct _Mixer

{

int fd;

/* widgets */

GtkWidget * window;

GtkWidget * properties;

GtkWidget * about;

/* internals */

MixerClass * mc;

size_t mc_cnt;

};

/* variables */

static char const * _authors[] =

{

"Pierre Pronchery <khorben@defora.org>",

NULL

};

static DesktopMenu _mixer_menu_file[] =

{

{ "_Properties", G_CALLBACK(on_file_properties), GTK_STOCK_PROPERTIES,

GDK_P },

{ "_Close", G_CALLBACK(on_file_close), GTK_STOCK_CLOSE, GDK_W },

{ NULL, NULL, NULL, 0 }

};

static DesktopMenu _mixer_menu_view[] =

{

{ "_All", G_CALLBACK(on_view_all), NULL, 0 },

{ "_Outputs", G_CALLBACK(on_view_outputs), NULL, 0 },

{ "_Inputs", G_CALLBACK(on_view_inputs), NULL, 0 },

{ "_Record", G_CALLBACK(on_view_record), NULL, 0 },

{ "Monito_r", G_CALLBACK(on_view_monitor), NULL, 0 },

{ "_Equalization", G_CALLBACK(on_view_equalization), NULL, 0 },

{ "Mi_x", G_CALLBACK(on_view_mix), NULL, 0 },

{ "_Modem", G_CALLBACK(on_view_modem), NULL, 0 },

{ NULL, NULL, NULL, 0 }

};

static DesktopMenu _mixer_menu_help[] =

{

{ "_About", G_CALLBACK(on_help_about), GTK_STOCK_ABOUT, 0 },

{ NULL, NULL, NULL, 0 }

};

static DesktopMenubar _mixer_menubar[] =

{

{ "_File", _mixer_menu_file },

{ "_View", _mixer_menu_view },

{ "_Help", _mixer_menu_help },

{ NULL, NULL },

};

/* prototypes */

mixer_ctrl_t * _mixer_get(Mixer * mixer, int dev);

/* public */

/* mixer_new */

static GtkWidget * _new_enum(Mixer * mixer, int dev,

struct audio_mixer_enum * e);

static GtkWidget * _new_set(Mixer * mixer, int dev, struct audio_mixer_set * s);

static GtkWidget * _new_value(Mixer * mixer, int dev,

struct audio_mixer_value * v);

Mixer * mixer_new(void)

{

Mixer * mixer;

GtkWidget * scrolled;

GtkWidget * vbox;

GtkWidget * widget;

GtkWidget * hbox;

GtkWidget * control;

int i;

mixer_devinfo_t md;

MixerClass * p;

size_t u;

if((mixer = malloc(sizeof(*mixer))) == NULL)

return NULL;

mixer->fd = open("/dev/mixer", O_RDWR);

mixer->window = NULL;

mixer->properties = NULL;

mixer->about = NULL;

mixer->mc = NULL;

mixer->mc_cnt = 0;

if(mixer->fd < 0)

{

mixer_delete(mixer);

return NULL;

}

/* widgets */

mixer->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

gtk_window_set_default_size(GTK_WINDOW(mixer->window), 800, 200);

gtk_window_set_title(GTK_WINDOW(mixer->window), PACKAGE);

g_signal_connect(G_OBJECT(mixer->window), "delete-event", G_CALLBACK(

on_closex), mixer);

scrolled = gtk_scrolled_window_new(NULL, NULL);

gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled),

GTK_POLICY_AUTOMATIC, GTK_POLICY_NEVER);

gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(scrolled),

GTK_SHADOW_NONE);

vbox = gtk_vbox_new(FALSE, 0);

/* menubar */

widget = desktop_menubar_create(_mixer_menubar, mixer, NULL);

gtk_box_pack_start(GTK_BOX(vbox), widget, FALSE, TRUE, 0);

/* classes */

hbox = gtk_hbox_new(FALSE, 0);

for(i = 0;; i++)

{

md.index = i;

if(ioctl(mixer->fd, AUDIO_MIXER_DEVINFO, &md) < 0)

break;

if(md.type != AUDIO_MIXER_CLASS)

continue;

if((p = realloc(mixer->mc, sizeof(*mixer->mc)

* (mixer->mc_cnt + 1))) == NULL)

{

/* FIXME report error */

mixer_delete(mixer);

return NULL;

}

mixer->mc = p;

p = &mixer->mc[mixer->mc_cnt++];

p->mixer_class = md.mixer_class;

memcpy(&p->label, &md.label, sizeof(md.label));

p->hbox = gtk_hbox_new(FALSE, 0);

gtk_box_pack_start(GTK_BOX(hbox), p->hbox, FALSE, TRUE, 0);

}

gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scrolled),

hbox);

/* controls */

for(i = 0;; i++)

{

md.index = i;

if(ioctl(mixer->fd, AUDIO_MIXER_DEVINFO, &md) < 0)

break;

if(md.type == AUDIO_MIXER_CLASS)

continue;

for(u = 0; u < mixer->mc_cnt; u++)

if(mixer->mc[u].mixer_class == md.mixer_class)

break;

if(u == mixer->mc_cnt)

continue;

hbox = mixer->mc[u].hbox;

control = NULL;

switch(md.type)

{

case AUDIO_MIXER_ENUM:

control = _new_enum(mixer, i, &md.un.e);

break;

case AUDIO_MIXER_SET:

control = _new_set(mixer, i, &md.un.s);

break;

case AUDIO_MIXER_VALUE:

control = _new_value(mixer, i, &md.un.v);

break;

}

if(control == NULL)

continue;

widget = gtk_vbox_new(FALSE, 0);

gtk_box_pack_start(GTK_BOX(widget), gtk_label_new(

md.label.name), FALSE, TRUE, 0);

gtk_box_pack_start(GTK_BOX(widget), control, TRUE, TRUE, 4);

gtk_box_pack_start(GTK_BOX(hbox), widget, TRUE, TRUE, 0);

}

gtk_box_pack_start(GTK_BOX(vbox), scrolled, TRUE, TRUE, 0);

gtk_container_add(GTK_CONTAINER(mixer->window), vbox);

gtk_widget_show_all(vbox);

mixer_show_class(mixer, AudioCoutputs);

gtk_widget_show(mixer->window);

return mixer;

}

static GtkWidget * _new_enum(Mixer * mixer, int dev,

struct audio_mixer_enum * e)

{

mixer_ctrl_t * p;

GtkWidget * vbox;

int i;

GtkWidget * widget;

GSList * group = NULL;

if(e->num_mem <= 0)

return NULL;

if((p = _mixer_get(mixer, dev)) == NULL)

return NULL;

vbox = gtk_vbox_new(TRUE, 0);

for(i = 0; i < e->num_mem; i++)

{

widget = gtk_radio_button_new_with_label(group,

e->member[i].label.name);

group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(widget));

if(p->un.ord == i)

gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(widget),

TRUE);

g_object_set_data(G_OBJECT(widget), "ctrl", p);

g_signal_connect(G_OBJECT(widget), "toggled", G_CALLBACK(

on_enum_toggled), mixer);

gtk_box_pack_start(GTK_BOX(vbox), widget, TRUE, TRUE, 0);

}

return vbox;

}

static GtkWidget * _new_set(Mixer * mixer, int dev, struct audio_mixer_set * s)

{

mixer_ctrl_t * p;

GtkWidget * vbox;

int i;

GtkWidget * widget;

if(s->num_mem <= 0)

return NULL;

if((p = _mixer_get(mixer, dev)) == NULL)

return NULL;

vbox = gtk_vbox_new(TRUE, 0);

for(i = 0; i < s->num_mem; i++)

{

widget = gtk_check_button_new_with_label(

s->member[i].label.name);

if(p->un.mask & (1 << i))

gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(widget),

TRUE);

g_object_set_data(G_OBJECT(widget), "ctrl", p);

g_signal_connect(G_OBJECT(widget), "toggled", G_CALLBACK(

on_set_toggled), mixer);

gtk_box_pack_start(GTK_BOX(vbox), widget, TRUE, TRUE, 0);

}

return vbox;

}

static GtkWidget * _new_value(Mixer * mixer, int dev,

struct audio_mixer_value * v)

{

mixer_ctrl_t * p;

GtkWidget * vbox;

GtkWidget * hbox;

int i;

GtkWidget * widget;

if(v->num_channels <= 0)

return NULL;

if((p = _mixer_get(mixer, dev)) == NULL)

return NULL;

hbox = gtk_hbox_new(TRUE, 0);

for(i = 0; i < v->num_channels; i++)

{

widget = gtk_vscale_new_with_range(0.0, 1.0, 0.02);

gtk_range_set_inverted(GTK_RANGE(widget), TRUE);

gtk_range_set_value(GTK_RANGE(widget),

p->un.value.level[i] / 255.0);

g_object_set_data(G_OBJECT(widget), "ctrl", p);

g_object_set_data(G_OBJECT(widget), "channel",

&p->un.value.level[i]);

g_signal_connect(G_OBJECT(widget), "value-changed", G_CALLBACK(

on_value_changed), mixer);

gtk_box_pack_start(GTK_BOX(hbox), widget, TRUE, TRUE, 0);

}

if(v->num_channels < 2)

return hbox;

vbox = gtk_vbox_new(FALSE, 0);

gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0);

widget = gtk_toggle_button_new_with_label("Bind");

gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(widget), TRUE);

gtk_box_pack_start(GTK_BOX(vbox), widget, FALSE, TRUE, 0);

return vbox;

}

/* mixer_delete */

void mixer_delete(Mixer * mixer)

{

if(mixer->fd >= 0)

close(mixer->fd);

if(mixer->window != NULL)

gtk_widget_destroy(mixer->window);

free(mixer);

}

/* accessors */

/* mixer_set_enum */

int mixer_set_enum(Mixer * mixer, GtkWidget * widget)

{

mixer_ctrl_t * p;

GSList * group;

int ord;

#ifdef DEBUG

fprintf(stderr, "DEBUG: %s()\n", __func__);

#endif

group = gtk_radio_button_get_group(GTK_RADIO_BUTTON(widget));

for(ord = 0; group != NULL; ord++)

if(group->data == widget)

break;

else

group = group->next;

p = g_object_get_data(G_OBJECT(widget), "ctrl");

if(group == NULL || p == NULL)

return 1;

p->un.ord = ord;

if(ioctl(mixer->fd, AUDIO_MIXER_WRITE, p) == 0)

return 0;

fprintf(stderr, "%s: %s: %s\n", PACKAGE, "AUDIO_MIXER_WRITE",

strerror(errno));

return 1;

}

/* mixer_set_value */

int mixer_set_value(Mixer * mixer, GtkWidget * widget, gdouble value)

{

mixer_ctrl_t * p;

u_char * level;

#ifdef DEBUG

fprintf(stderr, "DEBUG: %s(%lf)\n", __func__, value);

#endif

p = g_object_get_data(G_OBJECT(widget), "ctrl");

level = g_object_get_data(G_OBJECT(widget), "channel");

if(p == NULL || level == NULL)

return 1;

*level = value * 255;

if(ioctl(mixer->fd, AUDIO_MIXER_WRITE, p) == 0)

return 0;

fprintf(stderr, "%s: %s: %s\n", PACKAGE, "AUDIO_MIXER_WRITE",

strerror(errno));

return 1;

}

/* useful */

void mixer_about(Mixer * mixer)

{

if(mixer->about != NULL)

{

gtk_widget_show(mixer->about);

return;

}

mixer->about = desktop_about_dialog_new();

gtk_window_set_transient_for(GTK_WINDOW(mixer->about), GTK_WINDOW(

mixer->window));

desktop_about_dialog_set_authors(mixer->about, _authors);

desktop_about_dialog_set_copyright(mixer->about, _copyright);

desktop_about_dialog_set_license(mixer->about, _license);

desktop_about_dialog_set_logo_icon_name(mixer->about, "gnome-mixer");

desktop_about_dialog_set_name(mixer->about, PACKAGE);

desktop_about_dialog_set_version(mixer->about, VERSION);

gtk_widget_show(mixer->about);

}

/* mixer_properties */

void mixer_properties(Mixer * mixer)

{

audio_device_t ad;

GtkWidget * vbox;

GtkWidget * hbox;

GtkWidget * widget;

if(mixer->properties != NULL)

{

gtk_widget_show(mixer->properties);

return;

}

if(ioctl(mixer->fd, AUDIO_GETDEV, &ad) != 0)

{

fprintf(stderr, "%s: %s: %s\n", PACKAGE, "AUDIO_GETDEV",

strerror(errno));

return;

}

mixer->properties = gtk_dialog_new_with_buttons("Mixer properties",

GTK_WINDOW(mixer->window),

GTK_DIALOG_DESTROY_WITH_PARENT,

GTK_STOCK_OK, GTK_RESPONSE_ACCEPT, NULL);

vbox = gtk_dialog_get_content_area(GTK_DIALOG(mixer->properties));

hbox = gtk_hbox_new(FALSE, 0);

widget = gtk_label_new("Name: ");