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banshee.c

Access Banshee music player and send commands to it.

//Compile with:
// gcc -o banshee banshee.c `pkg-config --cflags --libs eldbus ecore eina`
#include "Eldbus.h"
#include <Ecore.h>
#define BUS "org.bansheeproject.Banshee"
#define ENGINE_PATH "/org/bansheeproject/Banshee/PlayerEngine"
#define CONTROLLER_PATH "/org/bansheeproject/Banshee/PlaybackController"
#define MPRIS_PATH "/org/mpris/MediaPlayer2"
#define ENGINE_IFACE "org.bansheeproject.Banshee.PlayerEngine"
#define CONTROLLER_IFACE "org.bansheeproject.Banshee.PlaybackController"
#define MPRIS_IFACE "org.mpris.MediaPlayer2.Playlists"
static Eldbus_Signal_Handler *state_changed2;
static Eina_Bool
_timeout_application(void *data EINA_UNUSED)
{
printf("\n## ecore_main_loop_quit()\n");
ecore_main_loop_quit();
return EINA_TRUE;
}
static void
on_get_playlists(void *data EINA_UNUSED, const Eldbus_Message *msg, Eldbus_Pending *pending EINA_UNUSED)
{
Eldbus_Message_Iter *array, *struct_entry;
const char *path, *name, *image;
int i = 0;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
if (!eldbus_message_arguments_get(msg, "a(oss)", &array))
{
fprintf(stderr, "Error: could not get entry contents\n");
return;
}
printf("on_get_playlists() \n\n");
while (eldbus_message_iter_get_and_next(array, 'r', &struct_entry))
{
if (!eldbus_message_iter_arguments_get(struct_entry, "oss", &path, &name, &image))
{
printf("error on eldbus_massage_iterator_arguments_get()");
return;
}
i++;
printf("%d - %s | %s | %s\n", i, path, name, image);
}
printf("end of on_get_playlists()\n\n");
}
static void
iterate_dict(void *data EINA_UNUSED, const void *key, Eldbus_Message_Iter *var)
{
const char *skey = key;
if (!strcmp(skey, "PlaylistCount"))
{
unsigned count;
if (!eldbus_message_iter_arguments_get(var, "u", &count))
printf("error2\n");
printf("PlaylistCount=%u\n", count);
}
else if (!strcmp(skey, "Orderings"))
{
Eldbus_Message_Iter *as;
const char *txt;
printf("- Orderings\n");
if (!eldbus_message_iter_arguments_get(var, "as", &as))
printf("error1\n");
while (eldbus_message_iter_get_and_next(as, 's', &txt))
printf("\t%s\n", txt);
}
}
static void
playlist_get_all_cb(void *data EINA_UNUSED, const Eldbus_Message *msg, Eldbus_Pending *pending EINA_UNUSED)
{
Eldbus_Message_Iter *array;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
if (eldbus_message_arguments_get(msg, "a{sv}", &array))
eldbus_message_iter_dict_iterate(array, "sv", iterate_dict, NULL);
}
static void
on_introspect(void *data EINA_UNUSED, const Eldbus_Message *msg, Eldbus_Pending *pending EINA_UNUSED)
{
const char *string;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
if (!eldbus_message_arguments_get(msg, "s", &string))
{
fprintf(stderr, "Error: could not get entry contents\n");
return;
}
printf("on_introspect() data=\n%s\n\n", string);
}
static void
on_next_or_pause(void *data, const Eldbus_Message *msg, Eldbus_Pending *pending EINA_UNUSED)
{
const char *status = data;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
printf("%s\n", status);
}
static void
on_state_changed(void *data EINA_UNUSED, const Eldbus_Message *msg)
{
const char *status;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
if (!eldbus_message_arguments_get(msg, "s", &status))
{
fprintf(stderr, "Error: could not get entry contents\n");
return;
}
printf("on_state_changed = %s\n", status);
}
static void
on_state_changed2(void *data EINA_UNUSED, const Eldbus_Message *msg)
{
const char *status;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
if (!eldbus_message_arguments_get(msg, "s", &status))
{
fprintf(stderr, "Error: could not get entry contents\n");
return;
}
printf("on_state_changed2 = %s\n", status);
eldbus_signal_handler_unref(state_changed2);
state_changed2 = NULL;
}
static void
on_banshee_startup(void *data EINA_UNUSED, const Eldbus_Message *msg)
{
const char *bus, *older_id, *new_id;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
if (!eldbus_message_arguments_get(msg, "sss", &bus, &older_id, &new_id))
{
printf("Error getting arguments from NameOwnerChanged");
return;
}
printf("banshee started on id=%s\n", new_id);
}
static void
on_name_owner_changed(void *data EINA_UNUSED, const Eldbus_Message *msg)
{
const char *bus, *older_id, *new_id;
EINA_SAFETY_ON_TRUE_RETURN(eldbus_message_error_get(msg, NULL, NULL));
if (!eldbus_message_arguments_get(msg, "sss", &bus, &older_id, &new_id))
{
printf("Error getting arguments from NameOwnerChanged");
return;
}
printf("bus = %s older=%s new=%s\n\n", bus, older_id, new_id);
}
int
main(void)
{
Eldbus_Connection *conn;
Eldbus_Object *engine_obj, *controller_obj, *mpris_obj;
Eldbus_Proxy *engine, *controler, *playlists;
Eldbus_Signal_Handler *sh;
ecore_init();
eldbus_init();
conn = eldbus_connection_get(ELDBUS_CONNECTION_TYPE_SESSION);
engine_obj = eldbus_object_get(conn, BUS, ENGINE_PATH);
controller_obj = eldbus_object_get(conn, BUS, CONTROLLER_PATH);
mpris_obj = eldbus_object_get(conn, BUS, MPRIS_PATH);
engine = eldbus_proxy_get(engine_obj, ENGINE_IFACE);
EINA_SAFETY_ON_NULL_GOTO(engine, end);
controler = eldbus_proxy_get(controller_obj, CONTROLLER_IFACE);
EINA_SAFETY_ON_NULL_GOTO(controler, end);
playlists = eldbus_proxy_get(mpris_obj, MPRIS_IFACE);
EINA_SAFETY_ON_NULL_GOTO(playlists, end);
eldbus_object_introspect(engine_obj, on_introspect, NULL);
eldbus_proxy_signal_handler_add(engine, "StateChanged", on_state_changed, NULL);
eldbus_proxy_call(engine, "Pause", on_next_or_pause, "Pause", -1, "");
eldbus_proxy_call(controler, "Next", on_next_or_pause, "Next", -1, "b", EINA_TRUE);
eldbus_proxy_property_get_all(playlists, playlist_get_all_cb, NULL);
eldbus_proxy_call(playlists, "GetPlaylists", on_get_playlists, NULL, -1,
"uusb", (unsigned)0, (unsigned)30, "asc", EINA_FALSE);
eldbus_signal_handler_add(conn, BUS, ENGINE_PATH, ENGINE_IFACE,
"StateChanged", on_state_changed, NULL);
state_changed2 = eldbus_signal_handler_add(conn, BUS, ENGINE_PATH, ENGINE_IFACE,
"StateChanged", on_state_changed2, NULL);
sh = eldbus_signal_handler_add(conn, ELDBUS_FDO_BUS, ELDBUS_FDO_PATH,
ELDBUS_FDO_INTERFACE, "NameOwnerChanged",
on_name_owner_changed, NULL);
eldbus_signal_handler_match_extra_set(sh, "arg0", BUS, NULL);
sh = eldbus_signal_handler_add(conn, ELDBUS_FDO_BUS, ELDBUS_FDO_PATH,
ELDBUS_FDO_INTERFACE, "NameOwnerChanged",
on_banshee_startup, NULL);
eldbus_signal_handler_match_extra_set(sh, "arg0", BUS, "arg1", "", NULL);
ecore_timer_add(50, _timeout_application, NULL);
ecore_main_loop_begin();
end:
eldbus_connection_unref(conn);
eldbus_shutdown();
ecore_shutdown();
return 0;
}