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RetroArch/input/input_overlay.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2016 - Daniel De Matteis
*
* RetroArch 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 Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch 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 RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stddef.h>
#include <string.h>
#include <math.h>
#include <compat/posix_string.h>
#include <file/file_path.h>
#include <retro_assert.h>
#include <string/string_list.h>
#include <file/config_file.h>
#include <formats/image.h>
#include <clamping.h>
#include <rhash.h>
#include "input_overlay.h"
#include "input_keyboard.h"
#include "../configuration.h"
#include "../verbosity.h"
#include "../tasks/tasks_internal.h"
#ifdef HAVE_MENU
#include "../menu/menu_driver.h"
#endif
#define OVERLAY_GET_KEY(state, key) (((state)->keys[(key) / 32] >> ((key) % 32)) & 1)
#define OVERLAY_SET_KEY(state, key) (state)->keys[(key) / 32] |= 1 << ((key) % 32)
struct input_overlay
{
void *iface_data;
const video_overlay_interface_t *iface;
bool enable;
bool blocked;
bool alive;
struct overlay *overlays;
const struct overlay *active;
size_t index;
size_t size;
unsigned next_index;
enum overlay_status state;
};
typedef struct input_overlay_state
{
/* This is a bitmask of (1 << key_bind_id). */
uint64_t buttons;
/* Left X, Left Y, Right X, Right Y */
int16_t analog[4];
uint32_t keys[RETROK_LAST / 32 + 1];
} input_overlay_state_t;
static input_overlay_state_t overlay_st_ptr;
static input_overlay_t *overlay_ptr = NULL;
/**
* input_overlay_scale:
* @ol : Overlay handle.
* @scale : Scaling factor.
*
* Scales overlay and all its associated descriptors
* by a given scaling factor (@scale).
**/
static void input_overlay_scale(struct overlay *ol, float scale)
{
size_t i;
if (!ol)
return;
if (ol->block_scale)
scale = 1.0f;
ol->scale = scale;
ol->mod_w = ol->w * scale;
ol->mod_h = ol->h * scale;
ol->mod_x = ol->center_x +
(ol->x - ol->center_x) * scale;
ol->mod_y = ol->center_y +
(ol->y - ol->center_y) * scale;
for (i = 0; i < ol->size; i++)
{
float scale_w, scale_h, adj_center_x, adj_center_y;
struct overlay_desc *desc = &ol->descs[i];
if (!desc)
continue;
scale_w = ol->mod_w * desc->range_x;
scale_h = ol->mod_h * desc->range_y;
desc->mod_w = 2.0f * scale_w;
desc->mod_h = 2.0f * scale_h;
adj_center_x = ol->mod_x + desc->x * ol->mod_w;
adj_center_y = ol->mod_y + desc->y * ol->mod_h;
desc->mod_x = adj_center_x - scale_w;
desc->mod_y = adj_center_y - scale_h;
}
}
static void input_overlay_set_vertex_geom(void)
{
size_t i;
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
if (ol->active->image.pixels)
ol->iface->vertex_geom(ol->iface_data, 0,
ol->active->mod_x, ol->active->mod_y,
ol->active->mod_w, ol->active->mod_h);
for (i = 0; i < ol->active->size; i++)
{
struct overlay_desc *desc = &ol->active->descs[i];
if (!desc)
continue;
if (!desc->image.pixels)
continue;
if (ol->iface && ol->iface->vertex_geom)
ol->iface->vertex_geom(ol->iface_data, desc->image_index,
desc->mod_x, desc->mod_y, desc->mod_w, desc->mod_h);
}
}
/**
* input_overlay_set_scale_factor:
* @ol : Overlay handle.
* @scale : Factor of scale to apply.
*
* Scales the overlay by a factor of scale.
**/
void input_overlay_set_scale_factor(float scale)
{
size_t i;
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
for (i = 0; i < ol->size; i++)
input_overlay_scale(&ol->overlays[i], scale);
input_overlay_set_vertex_geom();
}
void input_overlay_free_overlay(struct overlay *overlay)
{
size_t i;
if (!overlay)
return;
for (i = 0; i < overlay->size; i++)
video_texture_image_free(&overlay->descs[i].image);
if (overlay->load_images)
free(overlay->load_images);
overlay->load_images = NULL;
if (overlay->descs)
free(overlay->descs);
overlay->descs = NULL;
video_texture_image_free(&overlay->image);
}
static void input_overlay_free_overlays(input_overlay_t *ol)
{
size_t i;
if (!ol)
return;
for (i = 0; i < ol->size; i++)
input_overlay_free_overlay(&ol->overlays[i]);
if (ol->overlays)
free(ol->overlays);
ol->overlays = NULL;
}
static void input_overlay_load_active(float opacity)
{
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
if (ol->iface && ol->iface->load)
ol->iface->load(ol->iface_data, ol->active->load_images,
ol->active->load_images_size);
input_overlay_set_alpha_mod(opacity);
input_overlay_set_vertex_geom();
if (ol->iface && ol->iface->full_screen)
ol->iface->full_screen(ol->iface_data, ol->active->full_screen);
}
/**
* input_overlay_enable:
* @enable : Enable or disable the overlay
*
* Enable or disable the overlay.
**/
static void input_overlay_enable(bool enable)
{
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
ol->enable = enable;
if (ol->iface && ol->iface->enable)
ol->iface->enable(ol->iface_data, enable);
}
/**
* inside_hitbox:
* @desc : Overlay descriptor handle.
* @x : X coordinate value.
* @y : Y coordinate value.
*
* Check whether the given @x and @y coordinates of the overlay
* descriptor @desc is inside the overlay descriptor's hitbox.
*
* Returns: true (1) if X, Y coordinates are inside a hitbox, otherwise false (0).
**/
static bool inside_hitbox(const struct overlay_desc *desc, float x, float y)
{
if (!desc)
return false;
switch (desc->hitbox)
{
case OVERLAY_HITBOX_RADIAL:
{
/* Ellipsis. */
float x_dist = (x - desc->x) / desc->range_x_mod;
float y_dist = (y - desc->y) / desc->range_y_mod;
float sq_dist = x_dist * x_dist + y_dist * y_dist;
return (sq_dist <= 1.0f);
}
case OVERLAY_HITBOX_RECT:
return (fabs(x - desc->x) <= desc->range_x_mod) &&
(fabs(y - desc->y) <= desc->range_y_mod);
}
return false;
}
/**
* input_overlay_poll:
* @out : Polled output data.
* @norm_x : Normalized X coordinate.
* @norm_y : Normalized Y coordinate.
*
* Polls input overlay.
*
* @norm_x and @norm_y are the result of
* input_translate_coord_viewport().
**/
static void input_overlay_poll(input_overlay_state_t *out,
int16_t norm_x, int16_t norm_y)
{
size_t i;
float x, y;
input_overlay_t *ol = overlay_ptr;
memset(out, 0, sizeof(*out));
if (!ol->enable)
{
ol->blocked = false;
return;
}
/* norm_x and norm_y is in [-0x7fff, 0x7fff] range,
* like RETRO_DEVICE_POINTER. */
x = (float)(norm_x + 0x7fff) / 0xffff;
y = (float)(norm_y + 0x7fff) / 0xffff;
x -= ol->active->mod_x;
y -= ol->active->mod_y;
x /= ol->active->mod_w;
y /= ol->active->mod_h;
for (i = 0; i < ol->active->size; i++)
{
float x_dist, y_dist;
struct overlay_desc *desc = &ol->active->descs[i];
if (!desc)
continue;
if (!inside_hitbox(desc, x, y))
continue;
desc->updated = true;
x_dist = x - desc->x;
y_dist = y - desc->y;
switch (desc->type)
{
case OVERLAY_TYPE_BUTTONS:
{
uint64_t mask = desc->key_mask;
out->buttons |= mask;
if (mask & (UINT64_C(1) << RARCH_OVERLAY_NEXT))
ol->next_index = desc->next_index;
}
break;
case OVERLAY_TYPE_KEYBOARD:
if (desc->key_mask < RETROK_LAST)
OVERLAY_SET_KEY(out, desc->key_mask);
break;
default:
{
float x_val = x_dist / desc->range_x;
float y_val = y_dist / desc->range_y;
float x_val_sat = x_val / desc->analog_saturate_pct;
float y_val_sat = y_val / desc->analog_saturate_pct;
unsigned int base = (desc->type == OVERLAY_TYPE_ANALOG_RIGHT) ? 2 : 0;
out->analog[base + 0] = clamp_float(x_val_sat, -1.0f, 1.0f) * 32767.0f;
out->analog[base + 1] = clamp_float(y_val_sat, -1.0f, 1.0f) * 32767.0f;
}
break;
}
if (desc->movable)
{
desc->delta_x = clamp_float(x_dist, -desc->range_x, desc->range_x)
* ol->active->mod_w;
desc->delta_y = clamp_float(y_dist, -desc->range_y, desc->range_y)
* ol->active->mod_h;
}
}
if (!out->buttons)
ol->blocked = false;
else if (ol->blocked)
memset(out, 0, sizeof(*out));
}
/**
* input_overlay_update_desc_geom:
* @ol : overlay handle.
* @desc : overlay descriptors handle.
*
* Update input overlay descriptors' vertex geometry.
**/
static void input_overlay_update_desc_geom(input_overlay_t *ol,
struct overlay_desc *desc)
{
if (!desc || !desc->image.pixels)
return;
if (!desc->movable)
return;
if (ol->iface && ol->iface->vertex_geom)
ol->iface->vertex_geom(ol->iface_data, desc->image_index,
desc->mod_x + desc->delta_x, desc->mod_y + desc->delta_y,
desc->mod_w, desc->mod_h);
desc->delta_x = 0.0f;
desc->delta_y = 0.0f;
}
/**
* input_overlay_post_poll:
*
* Called after all the input_overlay_poll() calls to
* update the range modifiers for pressed/unpressed regions
* and alpha mods.
**/
static void input_overlay_post_poll(float opacity)
{
size_t i;
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
input_overlay_set_alpha_mod(opacity);
for (i = 0; i < ol->active->size; i++)
{
struct overlay_desc *desc = &ol->active->descs[i];
if (!desc)
continue;
desc->range_x_mod = desc->range_x;
desc->range_y_mod = desc->range_y;
if (desc->updated)
{
/* If pressed this frame, change the hitbox. */
desc->range_x_mod *= desc->range_mod;
desc->range_y_mod *= desc->range_mod;
if (desc->image.pixels)
{
if (ol->iface && ol->iface->set_alpha)
ol->iface->set_alpha(ol->iface_data, desc->image_index,
desc->alpha_mod * opacity);
}
}
input_overlay_update_desc_geom(ol, desc);
desc->updated = false;
}
}
/**
* input_overlay_poll_clear:
* @ol : overlay handle
*
* Call when there is nothing to poll. Allows overlay to
* clear certain state.
**/
static void input_overlay_poll_clear(float opacity)
{
size_t i;
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
ol->blocked = false;
input_overlay_set_alpha_mod(opacity);
for (i = 0; i < ol->active->size; i++)
{
struct overlay_desc *desc = &ol->active->descs[i];
if (!desc)
continue;
desc->range_x_mod = desc->range_x;
desc->range_y_mod = desc->range_y;
desc->updated = false;
desc->delta_x = 0.0f;
desc->delta_y = 0.0f;
input_overlay_update_desc_geom(ol, desc);
}
}
/**
* input_overlay_next:
* @ol : Overlay handle.
*
* Switch to the next available overlay
* screen.
**/
void input_overlay_next(float opacity)
{
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
ol->index = ol->next_index;
ol->active = &ol->overlays[ol->index];
input_overlay_load_active(opacity);
ol->blocked = true;
ol->next_index = (ol->index + 1) % ol->size;
}
/**
* input_overlay_full_screen:
*
* Checks if the overlay is fullscreen.
*
* Returns: true (1) if overlay is fullscreen, otherwise false (0).
**/
static bool input_overlay_full_screen(void)
{
input_overlay_t *ol = overlay_ptr;
if (!ol)
return false;
return ol->active->full_screen;
}
/**
* input_overlay_free:
* @ol : Overlay handle.
*
* Frees overlay handle.
**/
void input_overlay_free(void)
{
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
overlay_ptr = NULL;
input_overlay_free_overlays(ol);
if (ol->iface && ol->iface->enable)
ol->iface->enable(ol->iface_data, false);
free(ol);
}
/* task_data = overlay_task_data_t* */
static void input_overlay_loaded(void *task_data, void *user_data, const char *err)
{
size_t i;
input_overlay_t *ol;
overlay_task_data_t *data = (overlay_task_data_t*)task_data;
settings_t *settings = config_get_ptr();
const video_overlay_interface_t *iface = NULL;
if (err)
return;
#ifdef HAVE_MENU
/* We can't display when the menu is up */
if (settings->input.overlay_hide_in_menu && menu_driver_ctl(RARCH_MENU_CTL_IS_ALIVE, NULL))
{
if (!input_driver_ctl(RARCH_INPUT_CTL_IS_OSK_ENABLED, NULL)
&& settings->input.overlay_enable)
goto abort_load;
}
#endif
if (!settings->input.overlay_enable)
goto abort_load;
if (!video_driver_overlay_interface(&iface) || !iface)
{
RARCH_ERR("Overlay interface is not present in video driver.\n");
goto abort_load;
}
ol = (input_overlay_t*)calloc(1, sizeof(*ol));
ol->overlays = data->overlays;
ol->size = data->size;
ol->active = data->active;
ol->iface = iface;
ol->iface_data = video_driver_get_ptr(true);
overlay_ptr = ol;
input_overlay_load_active(settings->input.overlay_opacity);
input_overlay_enable(input_driver_ctl(RARCH_INPUT_CTL_IS_OSK_ENABLED, NULL) ? settings->osk.enable : settings->input.overlay_enable);
input_overlay_set_scale_factor(settings->input.overlay_scale);
ol->next_index = (ol->index + 1) % ol->size;
ol->state = OVERLAY_STATUS_NONE;
ol->alive = true;
free(data);
return;
abort_load:
for (i = 0; i < data->size; i++)
input_overlay_free_overlay(&data->overlays[i]);
free(data->overlays);
free(data);
}
void input_overlay_init(void)
{
input_overlay_free();
if (config_get_ptr()->input.overlay_enable)
rarch_task_push_overlay_load_default(input_overlay_loaded, NULL);
}
/**
* input_overlay_set_alpha_mod:
* @ol : Overlay handle.
* @mod : New modulating factor to apply.
*
* Sets a modulating factor for alpha channel. Default is 1.0.
* The alpha factor is applied for all overlays.
**/
void input_overlay_set_alpha_mod(float mod)
{
unsigned i;
input_overlay_t *ol = overlay_ptr;
if (!ol)
return;
for (i = 0; i < ol->active->load_images_size; i++)
ol->iface->set_alpha(ol->iface_data, i, mod);
}
bool input_overlay_is_alive(void)
{
input_overlay_t *ol = overlay_ptr;
if (!ol)
return false;
return ol->alive;
}
bool input_overlay_key_pressed(int key)
{
input_overlay_state_t *ol_state = &overlay_st_ptr;
if (!ol_state)
return false;
return (ol_state->buttons & (UINT64_C(1) << key));
}
/*
* input_poll_overlay:
*
* Poll pressed buttons/keys on currently active overlay.
**/
void input_poll_overlay(float opacity)
{
input_overlay_state_t old_key_state;
unsigned i, j, device;
uint16_t key_mod = 0;
bool polled = false;
settings_t *settings = config_get_ptr();
input_overlay_state_t *ol_state = &overlay_st_ptr;
if (!input_overlay_is_alive() || !ol_state)
return;
memcpy(old_key_state.keys, ol_state->keys,
sizeof(ol_state->keys));
memset(ol_state, 0, sizeof(*ol_state));
device = input_overlay_full_screen() ?
RARCH_DEVICE_POINTER_SCREEN : RETRO_DEVICE_POINTER;
for (i = 0;
input_driver_state(NULL, 0, device, i,
RETRO_DEVICE_ID_POINTER_PRESSED);
i++)
{
input_overlay_state_t polled_data;
int16_t x = input_driver_state(NULL, 0,
device, i, RETRO_DEVICE_ID_POINTER_X);
int16_t y = input_driver_state(NULL, 0,
device, i, RETRO_DEVICE_ID_POINTER_Y);
input_overlay_poll(&polled_data, x, y);
ol_state->buttons |= polled_data.buttons;
for (j = 0; j < ARRAY_SIZE(ol_state->keys); j++)
ol_state->keys[j] |= polled_data.keys[j];
/* Fingers pressed later take prio and matched up
* with overlay poll priorities. */
for (j = 0; j < 4; j++)
if (polled_data.analog[j])
ol_state->analog[j] = polled_data.analog[j];
polled = true;
}
if (OVERLAY_GET_KEY(ol_state, RETROK_LSHIFT) ||
OVERLAY_GET_KEY(ol_state, RETROK_RSHIFT))
key_mod |= RETROKMOD_SHIFT;
if (OVERLAY_GET_KEY(ol_state, RETROK_LCTRL) ||
OVERLAY_GET_KEY(ol_state, RETROK_RCTRL))
key_mod |= RETROKMOD_CTRL;
if (OVERLAY_GET_KEY(ol_state, RETROK_LALT) ||
OVERLAY_GET_KEY(ol_state, RETROK_RALT))
key_mod |= RETROKMOD_ALT;
if (OVERLAY_GET_KEY(ol_state, RETROK_LMETA) ||
OVERLAY_GET_KEY(ol_state, RETROK_RMETA))
key_mod |= RETROKMOD_META;
/* CAPSLOCK SCROLLOCK NUMLOCK */
for (i = 0; i < ARRAY_SIZE(ol_state->keys); i++)
{
if (ol_state->keys[i] != old_key_state.keys[i])
{
uint32_t orig_bits = old_key_state.keys[i];
uint32_t new_bits = ol_state->keys[i];
for (j = 0; j < 32; j++)
if ((orig_bits & (1 << j)) != (new_bits & (1 << j)))
input_keyboard_event(new_bits & (1 << j),
i * 32 + j, 0, key_mod, RETRO_DEVICE_POINTER);
}
}
/* Map "analog" buttons to analog axes like regular input drivers do. */
for (j = 0; j < 4; j++)
{
unsigned bind_plus = RARCH_ANALOG_LEFT_X_PLUS + 2 * j;
unsigned bind_minus = bind_plus + 1;
if (ol_state->analog[j])
continue;
if (input_overlay_key_pressed(bind_plus))
ol_state->analog[j] += 0x7fff;
if (input_overlay_key_pressed(bind_minus))
ol_state->analog[j] -= 0x7fff;
}
/* Check for analog_dpad_mode.
* Map analogs to d-pad buttons when configured. */
switch (settings->input.analog_dpad_mode[0])
{
case ANALOG_DPAD_LSTICK:
case ANALOG_DPAD_RSTICK:
{
float analog_x, analog_y;
unsigned analog_base = 2;
if (settings->input.analog_dpad_mode[0] == ANALOG_DPAD_LSTICK)
analog_base = 0;
analog_x = (float)ol_state->analog[analog_base + 0] / 0x7fff;
analog_y = (float)ol_state->analog[analog_base + 1] / 0x7fff;
if (analog_x <= -settings->input.axis_threshold)
ol_state->buttons |= (1UL << RETRO_DEVICE_ID_JOYPAD_LEFT);
if (analog_x >= settings->input.axis_threshold)
ol_state->buttons |= (1UL << RETRO_DEVICE_ID_JOYPAD_RIGHT);
if (analog_y <= -settings->input.axis_threshold)
ol_state->buttons |= (1UL << RETRO_DEVICE_ID_JOYPAD_UP);
if (analog_y >= settings->input.axis_threshold)
ol_state->buttons |= (1UL << RETRO_DEVICE_ID_JOYPAD_DOWN);
break;
}
default:
break;
}
if (polled)
input_overlay_post_poll(opacity);
else
input_overlay_poll_clear(opacity);
}
void input_state_overlay(int16_t *ret, unsigned port, unsigned device, unsigned idx,
unsigned id)
{
input_overlay_state_t *ol_state = &overlay_st_ptr;
if (!ol_state)
return;
if (port != 0)
return;
switch (device)
{
case RETRO_DEVICE_JOYPAD:
if (input_overlay_key_pressed(id))
*ret |= 1;
break;
case RETRO_DEVICE_KEYBOARD:
if (id < RETROK_LAST)
{
if (OVERLAY_GET_KEY(ol_state, id))
*ret |= 1;
}
break;
case RETRO_DEVICE_ANALOG:
{
unsigned base = 0;
if (idx == RETRO_DEVICE_INDEX_ANALOG_RIGHT)
base = 2;
if (id == RETRO_DEVICE_ID_ANALOG_Y)
base += 1;
if (ol_state && ol_state->analog[base])
*ret = ol_state->analog[base];
}
break;
}
}
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