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mixer.c
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#include <stdbool.h>
#include <stdio.h>
#include <gtk/gtk.h> // XXX
#include <gio/gio.h>
#include "mixer.h"
#include "../osc.h"
struct _Mixer {
GObject obj;
GSocket *socket;
GSocketAddress *send_address;
GSocketAddress *recv_address;
GHashTable *handlers;
GSource *source;
} _Mixer;
typedef struct {
Mixer *mixer;
const char *addr;
GType type;
GValue val;
GObject *obj;
GParamSpec *pspec;
} Binding;
G_DEFINE_TYPE(Mixer, mixer, G_TYPE_OBJECT)
enum {
PROP_SEND_ADDRESS = 1,
PROP_RECV_ADDRESS,
};
static void
handle_packet(Mixer *self, struct oscmsg *msg)
{
const char *addr;
addr = oscgetstr(msg);
if (msg->err) {
g_warning("bad osc message: %s", msg->err);
return;
}
if (strcmp(addr, "#bundle") == 0) {
unsigned long len;
struct oscmsg sub;
oscgetint(msg);
oscgetint(msg);
while (msg->buf != msg->end) {
len = oscgetint(msg);
if (len > msg->end - msg->buf) {
g_debug("%lu %td", len, msg->end - msg->buf);
msg->err = "truncated bundle";
}
if (msg->err) {
g_warning("bad osc packet: %s", msg->err);
return;
}
sub.err = NULL;
sub.buf = msg->buf;
sub.end = msg->buf + len;
sub.type = NULL;
handle_packet(self, &sub);
msg->buf = sub.end;
}
} else {
GClosure *closure;
if (*addr != '/') {
g_warning("bad osc message: address does not start with '/'");
return;
}
msg->type = oscgetstr(msg);
if (msg->type && *msg->type != ',')
msg->err = "type string does not start with ','";
if (msg->err) {
g_warning("bad osc message: %s", msg->err);
return;
}
++msg->type;
closure = g_hash_table_lookup(self->handlers, addr);
if (closure) {
static GArray *vals;
GValue val = {0}, args[2] = {0};
if (!vals)
vals = g_array_new(false, false, sizeof val);
g_array_set_size(vals, 0);
while (*msg->type) {
memset(&val, 0, sizeof val);
switch (*msg->type) {
case 's':
g_value_init(&val, G_TYPE_STRING);
g_value_set_static_string(&val, oscgetstr(msg));
break;
case 'i':
g_value_init(&val, G_TYPE_INT);
g_value_set_int(&val, oscgetint(msg));
break;
case 'f':
g_value_init(&val, G_TYPE_FLOAT);
g_value_set_float(&val, oscgetfloat(msg));
default:
break;
}
g_array_append_val(vals, val);
}
g_value_init(&args[0], G_TYPE_POINTER);
g_value_set_pointer(&args[0], vals->data);
g_value_init(&args[1], G_TYPE_UINT);
g_value_set_uint(&args[1], vals->len);
g_closure_invoke(closure, NULL, 2, args, NULL);
}
}
}
static gboolean
on_osc_data(GDatagramBased *socket, GIOCondition condition, gpointer ptr)
{
Mixer *self;
unsigned char buf[8192];
struct oscmsg msg;
gssize ret;
self = OSCMIX_MIXER(ptr);
ret = g_socket_receive(G_SOCKET(socket), (gchar *)buf, sizeof buf, NULL, NULL);
msg.err = NULL;
msg.buf = buf;
msg.end = buf + ret;
msg.type = NULL;
handle_packet(self, &msg);
return true;
}
static void
setup_connection(Mixer *self)
{
if (self->source)
g_source_unref(self->source);
if (self->socket)
g_object_unref(self->socket);
self->socket = g_socket_new(g_socket_address_get_family(self->recv_address), G_SOCKET_TYPE_DATAGRAM, G_SOCKET_PROTOCOL_UDP, NULL);
g_socket_bind(self->socket, self->recv_address, false, NULL);
self->source = g_socket_create_source(self->socket, G_IO_IN, NULL);
g_source_set_callback(self->source, (GSourceFunc)on_osc_data, self, NULL);
g_source_attach(self->source, NULL);
}
static void
mixer_set_property(GObject *obj, guint id, const GValue *val, GParamSpec *spec)
{
Mixer *self;
self = OSCMIX_MIXER(obj);
switch (id) {
case PROP_SEND_ADDRESS:
if (self->send_address)
g_object_unref(self->send_address);
self->send_address = G_SOCKET_ADDRESS(g_value_get_object(val));
break;
case PROP_RECV_ADDRESS:
if (self->recv_address)
g_object_unref(self->recv_address);
self->recv_address = G_SOCKET_ADDRESS(g_value_get_object(val));
setup_connection(self);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, id, spec);
break;
}
}
static void
mixer_get_property(GObject *obj, guint id, GValue *val, GParamSpec *spec)
{
Mixer *self;
self = OSCMIX_MIXER(obj);
switch (id) {
case PROP_SEND_ADDRESS:
g_value_set_object(val, G_OBJECT(self->send_address));
break;
case PROP_RECV_ADDRESS:
g_value_set_object(val, G_OBJECT(self->recv_address));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(obj, id, spec);
break;
}
}
static void
mixer_class_init(MixerClass *class)
{
G_OBJECT_CLASS(class)->set_property = mixer_set_property;
G_OBJECT_CLASS(class)->get_property = mixer_get_property;
g_object_class_install_property(G_OBJECT_CLASS(class), PROP_SEND_ADDRESS,
g_param_spec_object("send-address", NULL, NULL, G_TYPE_SOCKET_ADDRESS, G_PARAM_READWRITE));
g_object_class_install_property(G_OBJECT_CLASS(class), PROP_RECV_ADDRESS,
g_param_spec_object("recv-address", NULL, NULL, G_TYPE_SOCKET_ADDRESS, G_PARAM_READWRITE));
}
static void
mixer_init(Mixer *self)
{
self->handlers = g_hash_table_new(g_str_hash, g_str_equal);
}
Mixer *
mixer_new(void)
{
return g_object_new(mixer_get_type(), NULL);
}
void
mixer_send(Mixer *self, const char *addr, GValue *val)
{
struct oscmsg msg;
unsigned char buf[512];
gssize ret;
GError *err;
if (!self->socket)
return;
msg.type = NULL;
msg.buf = buf;
msg.end = buf + sizeof buf;
msg.err = NULL;
oscputstr(&msg, addr);
if (val) {
switch (G_VALUE_TYPE(val)) {
case G_TYPE_STRING:
oscputstr(&msg, ",s");
oscputstr(&msg, g_value_get_string(val));
break;
case G_TYPE_BOOLEAN:
oscputstr(&msg, ",i");
oscputint(&msg, g_value_get_boolean(val));
break;
case G_TYPE_INT:
oscputstr(&msg, ",i");
oscputint(&msg, g_value_get_int(val));
break;
case G_TYPE_FLOAT:
oscputstr(&msg, ",f");
oscputfloat(&msg, g_value_get_float(val));
break;
default:
g_critical("unknown value type '%s'", g_type_name(G_VALUE_TYPE(val)));
return;
}
} else {
oscputstr(&msg, ",");
}
err = NULL;
ret = g_socket_send_to(self->socket, self->send_address, (char *)buf, msg.buf - buf, NULL, &err);
if (ret < 0)
g_warning("%s", err->message);
}
static bool in_osc_to_prop;
static void
prop_to_osc(GObject *obj, GParamSpec *pspec, gpointer data)
{
Mixer *self;
GValue val;
Binding *bind;
if (in_osc_to_prop)
return;
bind = data;
self = bind->mixer;
memset(&val, 0, sizeof val);
g_object_get_property(obj, pspec->name, &val);
if (g_param_values_cmp(pspec, &bind->val, &val) == 0)
return;
/*
fprintf(stderr, "%s %s %s\n", bind->addr, g_type_name(G_VALUE_TYPE(&bind->val)), g_type_name(G_VALUE_TYPE(&val)));
switch (G_VALUE_TYPE(&bind->val)) {
case G_TYPE_INT: fprintf(stderr, "\told=%d\n", g_value_get_int(&bind->val)); break;
case G_TYPE_DOUBLE: fprintf(stderr, "\told=%f\n", g_value_get_double(&bind->val)); break;
}
switch (G_VALUE_TYPE(&val)) {
case G_TYPE_INT: fprintf(stderr, "\tnew=%d\n", g_value_get_int(&val)); break;
case G_TYPE_DOUBLE: fprintf(stderr, "\tnew=%f\n", g_value_get_double(&val)); break;
}
*/
g_value_copy(&val, &bind->val);
memset(&val, 0, sizeof val);
g_value_init(&val, bind->type);
if (!g_value_transform(&bind->val, &val)) {
g_warning("could not transform");
return;
}
mixer_send(self, bind->addr, &val);
}
static void
osc_to_prop(GValue *arg, guint len, gpointer data)
{
Binding *bind;
bind = data;
if (len == 0)
return;
if (g_value_transform(&arg[0], &bind->val)) {
g_param_value_validate(bind->pspec, &bind->val);
in_osc_to_prop = true;
g_object_set_property(bind->obj, bind->pspec->name, &bind->val);
in_osc_to_prop = false;
}
}
void
mixer_bind(Mixer *self, char *addr, GType type, gpointer ptr, const char *prop)
{
static guint notify_id;
Binding *bind;
GQuark detail;
GClosure *closure;
if (notify_id == 0) {
notify_id = g_signal_lookup("notify", G_TYPE_OBJECT);
g_assert(notify_id != 0);
}
bind = g_malloc(sizeof *bind);
bind->mixer = self;
bind->addr = addr;
memset(&bind->val, 0, sizeof bind->val);
bind->obj = G_OBJECT(ptr);
bind->pspec = g_object_class_find_property(G_OBJECT_GET_CLASS(bind->obj), prop);
if (!bind->pspec) {
g_critical("object '%s' has no property '%s'", gtk_widget_get_name(GTK_WIDGET(bind->obj)), prop);
return;
}
bind->type = type;
g_value_init(&bind->val, G_PARAM_SPEC_VALUE_TYPE(bind->pspec));
detail = g_quark_from_string(prop);
if (type != G_TYPE_NONE) {
closure = g_cclosure_new(G_CALLBACK(prop_to_osc), bind, NULL);
g_signal_connect_closure_by_id(bind->obj, notify_id, detail, closure, false);
}
mixer_connect(self, addr, osc_to_prop, bind);
}
void
mixer_connect(Mixer *self, char *addr, MixerCallback func, gpointer ptr)
{
GClosure *closure;
closure = g_cclosure_new(G_CALLBACK(func), ptr, NULL);
g_closure_set_marshal(closure, g_cclosure_marshal_VOID__UINT);
g_hash_table_insert(self->handlers, addr, closure);
}
static gboolean
should_remove(gpointer key, gpointer val, gpointer ptr)
{
GClosure *closure;
closure = val;
return closure->data == ptr;
}
void
mixer_disconnect_by_data(Mixer *self, gpointer ptr)
{
g_hash_table_foreach_remove(self->handlers, should_remove, ptr);
}