X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=input.c;fp=input.c;h=39d678397e804911297346f8673832eb4ef6e2e6;hb=a86e9a3e58f55bf49d99dfd5e5d6413e17149593;hp=0000000000000000000000000000000000000000;hpb=f506842df2b0e251b56ffe0a828bb2029d423eec;p=libpicofe.git

diff --git a/input.c b/input.c
new file mode 100644
index 0000000..39d6783
--- /dev/null
+++ b/input.c
@@ -0,0 +1,991 @@
+/*
+ * (C) Gražvydas "notaz" Ignotas, 2008-2011
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ *  - GNU GPL, version 2 or later.
+ *  - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "input.h"
+#include "plat.h"
+#include "lprintf.h"
+
+#ifdef IN_GP2X
+#error needs update: in_gp2x_init in_gp2x_update
+#include "../gp2x/in_gp2x.h"
+#endif
+#ifdef IN_VK
+#error needs update: in_vk_init in_vk_update
+#include "../win32/in_vk.h"
+#endif
+
+typedef struct
+{
+	int drv_id;
+	int drv_fd_hnd;
+	void *drv_data;
+	char *name;
+	int key_count;
+	int *binds;	/* total = key_count * bindtypes * 2 */
+	const char * const *key_names;
+	unsigned int probed:1;
+	unsigned int does_combos:1;
+} in_dev_t;
+
+static in_drv_t *in_drivers;
+static in_dev_t in_devices[IN_MAX_DEVS];
+static int in_driver_count = 0;
+static int in_dev_count = 0;		/* probed + bind devices */
+static int in_have_async_devs = 0;
+static int in_probe_dev_id;
+static int menu_key_state = 0;
+static int menu_last_used_dev = 0;
+
+#define DRV(id) in_drivers[id]
+
+
+static int *in_alloc_binds(int drv_id, int key_count)
+{
+	const struct in_default_bind *defbinds;
+	int *binds;
+	int i;
+
+	binds = calloc(key_count * IN_BINDTYPE_COUNT * 2, sizeof(binds[0]));
+	if (binds == NULL)
+		return NULL;
+
+	defbinds = DRV(drv_id).defbinds;
+	if (defbinds != NULL) {
+		for (i = 0; ; i++) {
+			if (defbinds[i].bit == 0 && defbinds[i].code == 0)
+				break;
+			binds[IN_BIND_OFFS(defbinds[i].code, defbinds[i].btype)] =
+				1 << defbinds[i].bit;
+		}
+
+		/* always have a copy of defbinds */
+		memcpy(binds + key_count * IN_BINDTYPE_COUNT, binds,
+			sizeof(binds[0]) * key_count * IN_BINDTYPE_COUNT);
+	}
+
+	return binds;
+}
+
+static void in_unprobe(in_dev_t *dev)
+{
+	if (dev->probed)
+		DRV(dev->drv_id).free(dev->drv_data);
+	dev->probed = 0;
+	dev->drv_data = NULL;
+}
+
+static void in_free(in_dev_t *dev)
+{
+	in_unprobe(dev);
+	free(dev->name);
+	dev->name = NULL;
+	free(dev->binds);
+	dev->binds = NULL;
+}
+
+/* to be called by drivers
+ * async devices must set drv_fd_hnd to -1 */
+void in_register(const char *nname, int drv_fd_hnd, void *drv_data,
+		int key_count, const char * const *key_names, int combos)
+{
+	int i, ret, dupe_count = 0, *binds;
+	char name[256], *name_end, *tmp;
+
+	strncpy(name, nname, sizeof(name));
+	name[sizeof(name)-12] = 0;
+	name_end = name + strlen(name);
+
+	for (i = 0; i < in_dev_count; i++)
+	{
+		if (in_devices[i].name == NULL)
+			continue;
+		if (strcmp(in_devices[i].name, name) == 0)
+		{
+			if (in_devices[i].probed) {
+				dupe_count++;
+				sprintf(name_end, " [%d]", dupe_count);
+				continue;
+			}
+			goto update;
+		}
+	}
+
+	if (i >= IN_MAX_DEVS)
+	{
+		/* try to find unused device */
+		for (i = 0; i < IN_MAX_DEVS; i++)
+			if (!in_devices[i].probed) break;
+		if (i >= IN_MAX_DEVS) {
+			lprintf("input: too many devices, can't add %s\n", name);
+			return;
+		}
+		in_free(&in_devices[i]);
+	}
+
+	tmp = strdup(name);
+	if (tmp == NULL)
+		return;
+
+	binds = in_alloc_binds(in_probe_dev_id, key_count);
+	if (binds == NULL) {
+		free(tmp);
+		return;
+	}
+
+	in_devices[i].name = tmp;
+	in_devices[i].binds = binds;
+	in_devices[i].key_count = key_count;
+	if (i + 1 > in_dev_count)
+		in_dev_count = i + 1;
+
+	lprintf("input: new device #%d \"%s\"\n", i, name);
+update:
+	in_devices[i].probed = 1;
+	in_devices[i].does_combos = combos;
+	in_devices[i].drv_id = in_probe_dev_id;
+	in_devices[i].drv_fd_hnd = drv_fd_hnd;
+	in_devices[i].key_names = key_names;
+	in_devices[i].drv_data = drv_data;
+
+	if (in_devices[i].binds != NULL) {
+		ret = DRV(in_probe_dev_id).clean_binds(drv_data, in_devices[i].binds,
+			in_devices[i].binds + key_count * IN_BINDTYPE_COUNT);
+		if (ret == 0) {
+			/* no useable binds */
+			free(in_devices[i].binds);
+			in_devices[i].binds = NULL;
+		}
+	}
+}
+
+/* key combo handling, to be called by drivers that support it.
+ * Only care about IN_BINDTYPE_EMU */
+void in_combos_find(const int *binds, int last_key, int *combo_keys, int *combo_acts)
+{
+	int act, u;
+
+	*combo_keys = *combo_acts = 0;
+	for (act = 0; act < sizeof(binds[0]) * 8; act++)
+	{
+		int keyc = 0;
+		for (u = 0; u <= last_key; u++)
+			if (binds[IN_BIND_OFFS(u, IN_BINDTYPE_EMU)] & (1 << act))
+				keyc++;
+
+		if (keyc > 1)
+		{
+			// loop again and mark those keys and actions as combo
+			for (u = 0; u <= last_key; u++)
+			{
+				if (binds[IN_BIND_OFFS(u, IN_BINDTYPE_EMU)] & (1 << act)) {
+					*combo_keys |= 1 << u;
+					*combo_acts |= 1 << act;
+				}
+			}
+		}
+	}
+}
+
+int in_combos_do(int keys, const int *binds, int last_key, int combo_keys, int combo_acts)
+{
+	int i, ret = 0;
+
+	for (i = 0; i <= last_key; i++)
+	{
+		int acts, acts_c, u;
+
+		if (!(keys & (1 << i)))
+			continue;
+
+		acts = binds[IN_BIND_OFFS(i, IN_BINDTYPE_EMU)];
+		if (!acts)
+			continue;
+
+		if (!(combo_keys & (1 << i))) {
+			ret |= acts;
+			continue;
+		}
+
+		acts_c = acts & combo_acts;
+		u = last_key;
+		if (acts_c) {
+			// let's try to find the other one
+			for (u = i + 1; u <= last_key; u++)
+				if ( (keys & (1 << u)) && (binds[IN_BIND_OFFS(u, IN_BINDTYPE_EMU)] & acts_c) ) {
+					ret |= acts_c & binds[IN_BIND_OFFS(u, IN_BINDTYPE_EMU)];
+					keys &= ~((1 << i) | (1 << u));
+					break;
+				}
+		}
+		// add non-combo actions if combo ones were not found
+		if (u >= last_key)
+			ret |= acts & ~combo_acts;
+	}
+
+	return ret;
+}
+
+void in_probe(void)
+{
+	int i;
+
+	in_have_async_devs = 0;
+	menu_key_state = 0;
+	menu_last_used_dev = 0;
+
+	for (i = 0; i < in_dev_count; i++)
+		in_unprobe(&in_devices[i]);
+
+	for (i = 0; i < in_driver_count; i++) {
+		in_probe_dev_id = i;
+		in_drivers[i].probe();
+	}
+
+	/* get rid of devs without binds and probes */
+	for (i = 0; i < in_dev_count; i++) {
+		if (!in_devices[i].probed && in_devices[i].binds == NULL) {
+			in_dev_count--;
+			if (i < in_dev_count) {
+				free(in_devices[i].name);
+				memmove(&in_devices[i], &in_devices[i+1],
+					(in_dev_count - i) * sizeof(in_devices[0]));
+			}
+
+			continue;
+		}
+
+		if (in_devices[i].probed && in_devices[i].drv_fd_hnd == -1)
+			in_have_async_devs = 1;
+	}
+
+	if (in_have_async_devs)
+		lprintf("input: async-only devices detected..\n");
+
+	in_debug_dump();
+}
+
+/* async update */
+int in_update(int *result)
+{
+	int i, ret = 0;
+
+	for (i = 0; i < in_dev_count; i++) {
+		in_dev_t *dev = &in_devices[i];
+		if (dev->probed && dev->binds != NULL)
+			ret |= DRV(dev->drv_id).update(dev->drv_data, dev->binds, result);
+	}
+
+	return ret;
+}
+
+static in_dev_t *get_dev(int dev_id)
+{
+	if (dev_id < 0 || dev_id >= IN_MAX_DEVS)
+		return NULL;
+
+	return &in_devices[dev_id];
+}
+
+int in_update_analog(int dev_id, int axis_id, int *result)
+{
+	in_dev_t *dev = get_dev(dev_id);
+
+	if (dev == NULL || !dev->probed)
+		return -1;
+
+	return DRV(dev->drv_id).update_analog(dev->drv_data, axis_id, result);
+}
+
+static int in_update_kc_async(int *dev_id_out, int *is_down_out, int timeout_ms)
+{
+	int i, is_down, result;
+	unsigned int ticks;
+
+	ticks = plat_get_ticks_ms();
+
+	while (1)
+	{
+		for (i = 0; i < in_dev_count; i++) {
+			in_dev_t *d = &in_devices[i];
+			if (!d->probed)
+				continue;
+
+			result = DRV(d->drv_id).update_keycode(d->drv_data, &is_down);
+			if (result == -1)
+				continue;
+
+			if (dev_id_out)
+				*dev_id_out = i;
+			if (is_down_out)
+				*is_down_out = is_down;
+			return result;
+		}
+
+		if (timeout_ms >= 0 && (int)(plat_get_ticks_ms() - ticks) > timeout_ms)
+			break;
+
+		plat_sleep_ms(10);
+	}
+
+	return -1;
+}
+
+/* 
+ * wait for a press, always return some keycode or -1 on timeout or error
+ */
+int in_update_keycode(int *dev_id_out, int *is_down_out, char *charcode, int timeout_ms)
+{
+	int result = -1, dev_id = 0, is_down, result_menu;
+	int fds_hnds[IN_MAX_DEVS];
+	int i, ret, count = 0;
+	in_drv_t *drv = NULL;
+	unsigned int ticks;
+
+	if (in_have_async_devs) {
+		result = in_update_kc_async(&dev_id, &is_down, timeout_ms);
+		if (result == -1)
+			return -1;
+		drv = &DRV(in_devices[dev_id].drv_id);
+		goto finish;
+	}
+
+	ticks = plat_get_ticks_ms();
+
+	for (i = 0; i < in_dev_count; i++) {
+		if (in_devices[i].probed)
+			fds_hnds[count++] = in_devices[i].drv_fd_hnd;
+	}
+
+	if (count == 0) {
+		/* don't deadlock, fail */
+		lprintf("input: failed to find devices to read\n");
+		exit(1);
+	}
+
+	while (1)
+	{
+		ret = plat_wait_event(fds_hnds, count, timeout_ms);
+		if (ret < 0)
+			break;
+
+		for (i = 0; i < in_dev_count; i++) {
+			if (in_devices[i].drv_fd_hnd == ret) {
+				dev_id = i;
+				break;
+			}
+		}
+
+		drv = &DRV(in_devices[dev_id].drv_id);
+		result = drv->update_keycode(in_devices[dev_id].drv_data, &is_down);
+		if (result >= 0)
+			break;
+
+		if (result == -2) {
+			lprintf("input: \"%s\" errored out, removing.\n", in_devices[dev_id].name);
+			in_unprobe(&in_devices[dev_id]);
+			break;
+		}
+
+		if (timeout_ms >= 0) {
+			unsigned int ticks2 = plat_get_ticks_ms();
+			timeout_ms -= ticks2 - ticks;
+			ticks = ticks2;
+			if (timeout_ms <= 0)
+				break;
+		}
+	}
+
+	if (result < 0)
+		return -1;
+finish:
+	/* keep track of menu key state, to allow mixing
+	 * in_update_keycode() and in_menu_wait_any() calls */
+	result_menu = drv->menu_translate(in_devices[dev_id].drv_data, result, charcode);
+	if (result_menu != 0) {
+		if (is_down)
+			menu_key_state |=  result_menu;
+		else
+			menu_key_state &= ~result_menu;
+	}
+
+	if (dev_id_out != NULL)
+		*dev_id_out = dev_id;
+	if (is_down_out != NULL)
+		*is_down_out = is_down;
+	return result;
+}
+
+/* same as above, only return bitfield of PBTN_*  */
+int in_menu_wait_any(char *charcode, int timeout_ms)
+{
+	int keys_old = menu_key_state;
+
+	while (1)
+	{
+		int code, is_down = 0, dev_id = 0;
+
+		code = in_update_keycode(&dev_id, &is_down, charcode, timeout_ms);
+		if (code < 0)
+			break;
+
+		if (keys_old != menu_key_state) {
+			menu_last_used_dev = dev_id;
+			break;
+		}
+	}
+
+	return menu_key_state;
+}
+
+/* wait for menu input, do autorepeat */
+int in_menu_wait(int interesting, char *charcode, int autorep_delay_ms)
+{
+	static int inp_prev = 0;
+	static int repeats = 0;
+	int ret, release = 0, wait = 450;
+
+	if (repeats)
+		wait = autorep_delay_ms;
+
+	ret = in_menu_wait_any(charcode, wait);
+	if (ret == inp_prev)
+		repeats++;
+
+	while (!(ret & interesting)) {
+		ret = in_menu_wait_any(charcode, -1);
+		release = 1;
+	}
+
+	if (release || ret != inp_prev)
+		repeats = 0;
+
+	inp_prev = ret;
+
+	/* we don't need diagonals in menus */
+	if ((ret & PBTN_UP)   && (ret & PBTN_LEFT))  ret &= ~PBTN_LEFT;
+	if ((ret & PBTN_UP)   && (ret & PBTN_RIGHT)) ret &= ~PBTN_RIGHT;
+	if ((ret & PBTN_DOWN) && (ret & PBTN_LEFT))  ret &= ~PBTN_LEFT;
+	if ((ret & PBTN_DOWN) && (ret & PBTN_RIGHT)) ret &= ~PBTN_RIGHT;
+
+	return ret;
+}
+
+const int *in_get_dev_binds(int dev_id)
+{
+	in_dev_t *dev = get_dev(dev_id);
+
+	return dev ? dev->binds : NULL;
+}
+
+const int *in_get_dev_def_binds(int dev_id)
+{
+	in_dev_t *dev = get_dev(dev_id);
+	if (dev == NULL)
+		return NULL;
+
+	return dev->binds + dev->key_count * IN_BINDTYPE_COUNT;
+}
+
+int in_get_config(int dev_id, int what, void *val)
+{
+	int *ival = val;
+	in_dev_t *dev;
+
+	dev = get_dev(dev_id);
+	if (dev == NULL || val == NULL)
+		return -1;
+
+	switch (what) {
+	case IN_CFG_BIND_COUNT:
+		*ival = dev->key_count;
+		break;
+	case IN_CFG_DOES_COMBOS:
+		*ival = dev->does_combos;
+		break;
+	case IN_CFG_BLOCKING:
+	case IN_CFG_KEY_NAMES:
+		return -1; /* not implemented */
+	default:
+		return DRV(dev->drv_id).get_config(dev->drv_data, what, ival);
+	}
+
+	return 0;
+}
+
+static int in_set_blocking(int is_blocking)
+{
+	int i, ret;
+
+	/* have_async_devs means we will have to do all reads async anyway.. */
+	if (!in_have_async_devs) {
+		for (i = 0; i < in_dev_count; i++) {
+			if (in_devices[i].probed)
+				DRV(in_devices[i].drv_id).set_config(in_devices[i].drv_data,
+								     IN_CFG_BLOCKING, is_blocking);
+		}
+	}
+
+	menu_key_state = 0;
+
+	/* flush events */
+	do {
+		ret = in_update_keycode(NULL, NULL, NULL, 0);
+	} while (ret >= 0);
+
+	return 0;
+}
+
+int in_set_config(int dev_id, int what, const void *val, int size)
+{
+	const char * const *names;
+	const int *ival = val;
+	in_dev_t *dev;
+	int count;
+
+	if (what == IN_CFG_BLOCKING)
+		return in_set_blocking(*ival);
+
+	dev = get_dev(dev_id);
+	if (dev == NULL)
+		return -1;
+
+	switch (what) {
+	case IN_CFG_KEY_NAMES:
+		names = val;
+		count = size / sizeof(names[0]);
+
+		if (count < dev->key_count) {
+			lprintf("input: set_key_names: not enough keys\n");
+			return -1;
+		}
+
+		dev->key_names = names;
+		return 0;
+	case IN_CFG_DEFAULT_DEV:
+		/* just set last used dev, for now */
+		menu_last_used_dev = dev_id;
+		return 0;
+	default:
+		break;
+	}
+
+	if (dev->probed)
+		return DRV(dev->drv_id).set_config(dev->drv_data, what, *ival);
+
+	return -1;
+}
+
+const char *in_get_dev_name(int dev_id, int must_be_active, int skip_pfix)
+{
+	const char *name, *tmp;
+	in_dev_t *dev;
+
+	dev = get_dev(dev_id);
+	if (dev == NULL)
+		return NULL;
+
+	if (must_be_active && !dev->probed)
+		return NULL;
+
+	name = dev->name;
+	if (name == NULL || !skip_pfix)
+		return name;
+
+	/* skip prefix */
+	tmp = strchr(name, ':');
+	if (tmp != NULL)
+		name = tmp + 1;
+
+	return name;
+}
+
+int in_name_to_id(const char *dev_name)
+{
+	int i;
+
+	for (i = 0; i < in_dev_count; i++)
+		if (strcmp(dev_name, in_devices[i].name) == 0)
+			break;
+
+	if (i >= in_dev_count) {
+		lprintf("input: in_name_to_id: no such device: %s\n", dev_name);
+		return -1;
+	}
+
+	return i;
+}
+
+/* never returns NULL */
+const char *in_get_key_name(int dev_id, int keycode)
+{
+	const char *name = NULL;
+	static char xname[16];
+	in_drv_t *drv;
+	in_dev_t *dev;
+
+	if (dev_id < 0)		/* want last used dev? */
+		dev_id = menu_last_used_dev;
+
+	dev = get_dev(dev_id);
+	if (dev == NULL)
+		return "Unkn0";
+
+	drv = &DRV(dev->drv_id);
+	if (keycode < 0)	/* want name for menu key? */
+		keycode = drv->menu_translate(dev->drv_data, keycode, NULL);
+
+	if (dev->key_names != NULL && 0 <= keycode && keycode < dev->key_count)
+		name = dev->key_names[keycode];
+	if (name != NULL)
+		return name;
+
+	if (drv->get_key_name != NULL)
+		name = drv->get_key_name(keycode);
+	if (name != NULL)
+		return name;
+
+	/* assume scancode */
+	if ((keycode >= '0' && keycode <= '9') || (keycode >= 'a' && keycode <= 'z')
+			|| (keycode >= 'A' && keycode <= 'Z'))
+		sprintf(xname, "%c", keycode);
+	else
+		sprintf(xname, "\\x%02X", keycode);
+	return xname;
+}
+
+int in_get_key_code(int dev_id, const char *key_name)
+{
+	in_dev_t *dev;
+	int i;
+
+	if (dev_id < 0)		/* want last used dev? */
+		dev_id = menu_last_used_dev;
+
+	dev = get_dev(dev_id);
+	if (dev == NULL)
+		return -1;
+
+	if (dev->key_names == NULL)
+		return -1;
+
+	for (i = 0; i < dev->key_count; i++)
+		if (dev->key_names[i] && strcasecmp(dev->key_names[i], key_name) == 0)
+			return i;
+
+	return -1;
+}
+
+int in_bind_key(int dev_id, int keycode, int mask, int bind_type, int force_unbind)
+{
+	int ret, count;
+	in_dev_t *dev;
+
+	dev = get_dev(dev_id);
+	if (dev == NULL || bind_type >= IN_BINDTYPE_COUNT)
+		return -1;
+
+	count = dev->key_count;
+
+	if (dev->binds == NULL) {
+		if (force_unbind)
+			return 0;
+		dev->binds = in_alloc_binds(dev->drv_id, count);
+		if (dev->binds == NULL)
+			return -1;
+	}
+
+	if (keycode < 0 || keycode >= count)
+		return -1;
+	
+	if (force_unbind)
+		dev->binds[IN_BIND_OFFS(keycode, bind_type)] &= ~mask;
+	else
+		dev->binds[IN_BIND_OFFS(keycode, bind_type)] ^=  mask;
+	
+	ret = DRV(dev->drv_id).clean_binds(dev->drv_data, dev->binds,
+				dev->binds + count * IN_BINDTYPE_COUNT);
+	if (ret == 0) {
+		free(dev->binds);
+		dev->binds = NULL;
+	}
+
+	return 0;
+}
+
+/*
+ * Unbind act_mask on binds with type bind_type
+ * - if dev_id_ < 0, affects all devices
+ *   else only affects dev_id_
+ * - if act_mask == -1, unbind all keys
+ *   else only actions in mask
+ */
+void in_unbind_all(int dev_id_, int act_mask, int bind_type)
+{
+	int dev_id = 0, dev_last = IN_MAX_DEVS - 1;
+	int i, count;
+	in_dev_t *dev;
+
+	if (dev_id_ >= 0)
+		dev_id = dev_last = dev_id_;
+
+	if (bind_type >= IN_BINDTYPE_COUNT)
+		return;
+
+	for (; dev_id <= dev_last; dev_id++) {
+		dev = &in_devices[dev_id];
+		count = dev->key_count;
+
+		if (dev->binds == NULL)
+			continue;
+
+		if (act_mask != -1) {
+			for (i = 0; i < count; i++)
+				dev->binds[IN_BIND_OFFS(i, bind_type)] &= ~act_mask;
+		}
+		else
+			memset(dev->binds, 0, sizeof(dev->binds[0]) * count * IN_BINDTYPE_COUNT);
+	}
+}
+
+/* returns device id, or -1 on error */
+int in_config_parse_dev(const char *name)
+{
+	int drv_id = -1, i;
+
+	for (i = 0; i < in_driver_count; i++) {
+		int len = strlen(in_drivers[i].prefix);
+		if (strncmp(name, in_drivers[i].prefix, len) == 0) {
+			drv_id = i;
+			break;
+		}
+	}
+
+	if (drv_id < 0) {
+		lprintf("input: missing driver for %s\n", name);
+		return -1;
+	}
+
+	for (i = 0; i < in_dev_count; i++)
+	{
+		if (in_devices[i].name == NULL)
+			continue;
+		if (strcmp(in_devices[i].name, name) == 0)
+			return i;
+	}
+
+	if (i >= IN_MAX_DEVS)
+	{
+		/* try to find unused device */
+		for (i = 0; i < IN_MAX_DEVS; i++)
+			if (in_devices[i].name == NULL) break;
+		if (i >= IN_MAX_DEVS) {
+			lprintf("input: too many devices, can't add %s\n", name);
+			return -1;
+		}
+	}
+
+	memset(&in_devices[i], 0, sizeof(in_devices[i]));
+
+	in_devices[i].name = strdup(name);
+	if (in_devices[i].name == NULL)
+		return -1;
+
+	in_devices[i].key_names = DRV(drv_id).get_key_names(&in_devices[i].key_count);
+	in_devices[i].drv_id = drv_id;
+
+	if (i + 1 > in_dev_count)
+		in_dev_count = i + 1;
+
+	return i;
+}
+
+int in_config_bind_key(int dev_id, const char *key, int acts, int bind_type)
+{
+	in_dev_t *dev;
+	int i, offs, kc;
+
+	dev = get_dev(dev_id);
+	if (dev == NULL || bind_type >= IN_BINDTYPE_COUNT)
+		return -1;
+
+	/* maybe a raw code? */
+	if (key[0] == '\\' && key[1] == 'x') {
+		char *p = NULL;
+		kc = (int)strtoul(key + 2, &p, 16);
+		if (p == NULL || *p != 0)
+			kc = -1;
+	}
+	else {
+		/* device specific key name */
+		if (dev->binds == NULL) {
+			dev->binds = in_alloc_binds(dev->drv_id, dev->key_count);
+			if (dev->binds == NULL)
+				return -1;
+		}
+
+		kc = -1;
+		if (dev->key_names != NULL) {
+			for (i = 0; i < dev->key_count; i++) {
+				const char *k = dev->key_names[i];
+				if (k != NULL && strcasecmp(k, key) == 0) {
+					kc = i;
+					break;
+				}
+			}
+		}
+
+		if (kc < 0)
+			kc = DRV(dev->drv_id).get_key_code(key);
+		if (kc < 0 && strlen(key) == 1) {
+			/* assume scancode */
+			kc = key[0];
+		}
+	}
+
+	if (kc < 0 || kc >= dev->key_count) {
+		lprintf("input: bad key: %s\n", key);
+		return -1;
+	}
+
+	if (bind_type == IN_BINDTYPE_NONE) {
+		for (i = 0; i < IN_BINDTYPE_COUNT; i++)
+			dev->binds[IN_BIND_OFFS(kc, i)] = 0;
+		return 0;
+	}
+
+	offs = IN_BIND_OFFS(kc, bind_type);
+	if (dev->binds[offs] == -1)
+		dev->binds[offs] = 0;
+	dev->binds[offs] |= acts;
+	return 0;
+}
+
+void in_clean_binds(void)
+{
+	int i;
+
+	for (i = 0; i < IN_MAX_DEVS; i++) {
+		int ret, count, *binds, *def_binds;
+		in_dev_t *dev = &in_devices[i];
+
+		if (dev->binds == NULL || dev->drv_data == NULL)
+			continue;
+
+		count = dev->key_count;
+		binds = dev->binds;
+		def_binds = binds + count * IN_BINDTYPE_COUNT;
+
+		ret = DRV(dev->drv_id).clean_binds(dev->drv_data, binds, def_binds);
+		if (ret == 0) {
+			/* no useable binds */
+			free(dev->binds);
+			dev->binds = NULL;
+		}
+	}
+}
+
+void in_debug_dump(void)
+{
+	int i;
+
+	lprintf("# drv probed binds name\n");
+	for (i = 0; i < IN_MAX_DEVS; i++) {
+		in_dev_t *d = &in_devices[i];
+		if (!d->probed && d->name == NULL && d->binds == NULL)
+			continue;
+		lprintf("%d %3d %6c %5c %s\n", i, d->drv_id, d->probed ? 'y' : 'n',
+			d->binds ? 'y' : 'n', d->name);
+	}
+}
+
+/* stubs for drivers that choose not to implement something */
+
+static void in_def_free(void *drv_data) {}
+static int  in_def_clean_binds(void *drv_data, int *b, int *db) { return 1; }
+static int  in_def_get_config(void *drv_data, int what, int *val) { return -1; }
+static int  in_def_set_config(void *drv_data, int what, int val) { return -1; }
+static int  in_def_update_analog(void *drv_data, int axis_id, int *result) { return -1; }
+static int  in_def_update_keycode(void *drv_data, int *is_down) { return 0; }
+static int  in_def_menu_translate(void *drv_data, int keycode, char *ccode) { return 0; }
+static int  in_def_get_key_code(const char *key_name) { return -1; }
+static const char *in_def_get_key_name(int keycode) { return NULL; }
+
+#define CHECK_ADD_STUB(d, f) \
+	if (d.f == NULL) d.f = in_def_##f
+
+/* to be called by drivers */
+int in_register_driver(const in_drv_t *drv, const struct in_default_bind *defbinds)
+{
+	int count_new = in_driver_count + 1;
+	in_drv_t *new_drivers;
+
+	new_drivers = realloc(in_drivers, count_new * sizeof(in_drivers[0]));
+	if (new_drivers == NULL) {
+		lprintf("input: in_register_driver OOM\n");
+		return -1;
+	}
+
+	memcpy(&new_drivers[in_driver_count], drv, sizeof(new_drivers[0]));
+
+	CHECK_ADD_STUB(new_drivers[in_driver_count], free);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], clean_binds);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], get_config);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], set_config);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], update_analog);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], update_keycode);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], menu_translate);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], get_key_code);
+	CHECK_ADD_STUB(new_drivers[in_driver_count], get_key_name);
+	if (defbinds != NULL)
+		new_drivers[in_driver_count].defbinds = defbinds;
+	in_drivers = new_drivers;
+	in_driver_count = count_new;
+
+	return 0;
+}
+
+void in_init(void)
+{
+	in_drivers = NULL;
+	memset(in_devices, 0, sizeof(in_devices));
+	in_driver_count = 0;
+	in_dev_count = 0;
+}
+
+#if 0
+int main(void)
+{
+	int ret;
+
+	in_init();
+	in_probe();
+
+	in_set_blocking(1);
+
+#if 1
+	while (1) {
+		int dev = 0, down;
+		ret = in_update_keycode(&dev, &down);
+		lprintf("#%i: %i %i (%s)\n", dev, down, ret, in_get_key_name(dev, ret));
+	}
+#else
+	while (1) {
+		ret = in_menu_wait_any();
+		lprintf("%08x\n", ret);
+	}
+#endif
+
+	return 0;
+}
+#endif