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scrcpy/app/src/keyboard_inject.c
Romain Vimont 9d2e00697e Use sc_ prefix for control_msg enums 
Refs afa4a1b728
2022-01-27 16:47:51 +01:00

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#include "keyboard_inject.h"
#include <assert.h>
#include "android/input.h"
#include "control_msg.h"
#include "controller.h"
#include "input_events.h"
#include "util/intmap.h"
#include "util/log.h"
/** Downcast key processor to sc_keyboard_inject */
#define DOWNCAST(KP) container_of(KP, struct sc_keyboard_inject, key_processor)
static enum android_keyevent_action
convert_keycode_action(enum sc_action action) {
if (action == SC_ACTION_DOWN) {
return AKEY_EVENT_ACTION_DOWN;
}
assert(action == SC_ACTION_UP);
return AKEY_EVENT_ACTION_UP;
}
static bool
convert_keycode(enum sc_keycode from, enum android_keycode *to, uint16_t mod,
enum sc_key_inject_mode key_inject_mode) {
// Navigation keys and ENTER.
// Used in all modes.
static const struct sc_intmap_entry special_keys[] = {
{SC_KEYCODE_RETURN, AKEYCODE_ENTER},
{SC_KEYCODE_KP_ENTER, AKEYCODE_NUMPAD_ENTER},
{SC_KEYCODE_ESCAPE, AKEYCODE_ESCAPE},
{SC_KEYCODE_BACKSPACE, AKEYCODE_DEL},
{SC_KEYCODE_TAB, AKEYCODE_TAB},
{SC_KEYCODE_PAGEUP, AKEYCODE_PAGE_UP},
{SC_KEYCODE_DELETE, AKEYCODE_FORWARD_DEL},
{SC_KEYCODE_HOME, AKEYCODE_MOVE_HOME},
{SC_KEYCODE_END, AKEYCODE_MOVE_END},
{SC_KEYCODE_PAGEDOWN, AKEYCODE_PAGE_DOWN},
{SC_KEYCODE_RIGHT, AKEYCODE_DPAD_RIGHT},
{SC_KEYCODE_LEFT, AKEYCODE_DPAD_LEFT},
{SC_KEYCODE_DOWN, AKEYCODE_DPAD_DOWN},
{SC_KEYCODE_UP, AKEYCODE_DPAD_UP},
{SC_KEYCODE_LCTRL, AKEYCODE_CTRL_LEFT},
{SC_KEYCODE_RCTRL, AKEYCODE_CTRL_RIGHT},
{SC_KEYCODE_LSHIFT, AKEYCODE_SHIFT_LEFT},
{SC_KEYCODE_RSHIFT, AKEYCODE_SHIFT_RIGHT},
};
// Numpad navigation keys.
// Used in all modes, when NumLock and Shift are disabled.
static const struct sc_intmap_entry kp_nav_keys[] = {
{SC_KEYCODE_KP_0, AKEYCODE_INSERT},
{SC_KEYCODE_KP_1, AKEYCODE_MOVE_END},
{SC_KEYCODE_KP_2, AKEYCODE_DPAD_DOWN},
{SC_KEYCODE_KP_3, AKEYCODE_PAGE_DOWN},
{SC_KEYCODE_KP_4, AKEYCODE_DPAD_LEFT},
{SC_KEYCODE_KP_6, AKEYCODE_DPAD_RIGHT},
{SC_KEYCODE_KP_7, AKEYCODE_MOVE_HOME},
{SC_KEYCODE_KP_8, AKEYCODE_DPAD_UP},
{SC_KEYCODE_KP_9, AKEYCODE_PAGE_UP},
{SC_KEYCODE_KP_PERIOD, AKEYCODE_FORWARD_DEL},
};
// Letters and space.
// Used in non-text mode.
static const struct sc_intmap_entry alphaspace_keys[] = {
{SC_KEYCODE_a, AKEYCODE_A},
{SC_KEYCODE_b, AKEYCODE_B},
{SC_KEYCODE_c, AKEYCODE_C},
{SC_KEYCODE_d, AKEYCODE_D},
{SC_KEYCODE_e, AKEYCODE_E},
{SC_KEYCODE_f, AKEYCODE_F},
{SC_KEYCODE_g, AKEYCODE_G},
{SC_KEYCODE_h, AKEYCODE_H},
{SC_KEYCODE_i, AKEYCODE_I},
{SC_KEYCODE_j, AKEYCODE_J},
{SC_KEYCODE_k, AKEYCODE_K},
{SC_KEYCODE_l, AKEYCODE_L},
{SC_KEYCODE_m, AKEYCODE_M},
{SC_KEYCODE_n, AKEYCODE_N},
{SC_KEYCODE_o, AKEYCODE_O},
{SC_KEYCODE_p, AKEYCODE_P},
{SC_KEYCODE_q, AKEYCODE_Q},
{SC_KEYCODE_r, AKEYCODE_R},
{SC_KEYCODE_s, AKEYCODE_S},
{SC_KEYCODE_t, AKEYCODE_T},
{SC_KEYCODE_u, AKEYCODE_U},
{SC_KEYCODE_v, AKEYCODE_V},
{SC_KEYCODE_w, AKEYCODE_W},
{SC_KEYCODE_x, AKEYCODE_X},
{SC_KEYCODE_y, AKEYCODE_Y},
{SC_KEYCODE_z, AKEYCODE_Z},
{SC_KEYCODE_SPACE, AKEYCODE_SPACE},
};
// Numbers and punctuation keys.
// Used in raw mode only.
static const struct sc_intmap_entry numbers_punct_keys[] = {
{SC_KEYCODE_HASH, AKEYCODE_POUND},
{SC_KEYCODE_PERCENT, AKEYCODE_PERIOD},
{SC_KEYCODE_QUOTE, AKEYCODE_APOSTROPHE},
{SC_KEYCODE_ASTERISK, AKEYCODE_STAR},
{SC_KEYCODE_PLUS, AKEYCODE_PLUS},
{SC_KEYCODE_COMMA, AKEYCODE_COMMA},
{SC_KEYCODE_MINUS, AKEYCODE_MINUS},
{SC_KEYCODE_PERIOD, AKEYCODE_PERIOD},
{SC_KEYCODE_SLASH, AKEYCODE_SLASH},
{SC_KEYCODE_0, AKEYCODE_0},
{SC_KEYCODE_1, AKEYCODE_1},
{SC_KEYCODE_2, AKEYCODE_2},
{SC_KEYCODE_3, AKEYCODE_3},
{SC_KEYCODE_4, AKEYCODE_4},
{SC_KEYCODE_5, AKEYCODE_5},
{SC_KEYCODE_6, AKEYCODE_6},
{SC_KEYCODE_7, AKEYCODE_7},
{SC_KEYCODE_8, AKEYCODE_8},
{SC_KEYCODE_9, AKEYCODE_9},
{SC_KEYCODE_SEMICOLON, AKEYCODE_SEMICOLON},
{SC_KEYCODE_EQUALS, AKEYCODE_EQUALS},
{SC_KEYCODE_AT, AKEYCODE_AT},
{SC_KEYCODE_LEFTBRACKET, AKEYCODE_LEFT_BRACKET},
{SC_KEYCODE_BACKSLASH, AKEYCODE_BACKSLASH},
{SC_KEYCODE_RIGHTBRACKET, AKEYCODE_RIGHT_BRACKET},
{SC_KEYCODE_BACKQUOTE, AKEYCODE_GRAVE},
{SC_KEYCODE_KP_1, AKEYCODE_NUMPAD_1},
{SC_KEYCODE_KP_2, AKEYCODE_NUMPAD_2},
{SC_KEYCODE_KP_3, AKEYCODE_NUMPAD_3},
{SC_KEYCODE_KP_4, AKEYCODE_NUMPAD_4},
{SC_KEYCODE_KP_5, AKEYCODE_NUMPAD_5},
{SC_KEYCODE_KP_6, AKEYCODE_NUMPAD_6},
{SC_KEYCODE_KP_7, AKEYCODE_NUMPAD_7},
{SC_KEYCODE_KP_8, AKEYCODE_NUMPAD_8},
{SC_KEYCODE_KP_9, AKEYCODE_NUMPAD_9},
{SC_KEYCODE_KP_0, AKEYCODE_NUMPAD_0},
{SC_KEYCODE_KP_DIVIDE, AKEYCODE_NUMPAD_DIVIDE},
{SC_KEYCODE_KP_MULTIPLY, AKEYCODE_NUMPAD_MULTIPLY},
{SC_KEYCODE_KP_MINUS, AKEYCODE_NUMPAD_SUBTRACT},
{SC_KEYCODE_KP_PLUS, AKEYCODE_NUMPAD_ADD},
{SC_KEYCODE_KP_PERIOD, AKEYCODE_NUMPAD_DOT},
{SC_KEYCODE_KP_EQUALS, AKEYCODE_NUMPAD_EQUALS},
{SC_KEYCODE_KP_LEFTPAREN, AKEYCODE_NUMPAD_LEFT_PAREN},
{SC_KEYCODE_KP_RIGHTPAREN, AKEYCODE_NUMPAD_RIGHT_PAREN},
};
const struct sc_intmap_entry *entry =
SC_INTMAP_FIND_ENTRY(special_keys, from);
if (entry) {
*to = entry->value;
return true;
}
if (!(mod & (SC_MOD_NUM | SC_MOD_LSHIFT | SC_MOD_RSHIFT))) {
// Handle Numpad events when Num Lock is disabled
// If SHIFT is pressed, a text event will be sent instead
entry = SC_INTMAP_FIND_ENTRY(kp_nav_keys, from);
if (entry) {
*to = entry->value;
return true;
}
}
if (key_inject_mode == SC_KEY_INJECT_MODE_TEXT &&
!(mod & (SC_MOD_LCTRL | SC_MOD_RCTRL))) {
// do not forward alpha and space key events (unless Ctrl is pressed)
return false;
}
if (mod & (SC_MOD_LALT | SC_MOD_RALT | SC_MOD_LGUI | SC_MOD_RGUI)) {
return false;
}
// if ALT and META are not pressed, also handle letters and space
entry = SC_INTMAP_FIND_ENTRY(alphaspace_keys, from);
if (entry) {
*to = entry->value;
return true;
}
if (key_inject_mode == SC_KEY_INJECT_MODE_RAW) {
entry = SC_INTMAP_FIND_ENTRY(numbers_punct_keys, from);
if (entry) {
*to = entry->value;
return true;
}
}
return false;
}
static enum android_metastate
autocomplete_metastate(enum android_metastate metastate) {
// fill dependent flags
if (metastate & (AMETA_SHIFT_LEFT_ON | AMETA_SHIFT_RIGHT_ON)) {
metastate |= AMETA_SHIFT_ON;
}
if (metastate & (AMETA_CTRL_LEFT_ON | AMETA_CTRL_RIGHT_ON)) {
metastate |= AMETA_CTRL_ON;
}
if (metastate & (AMETA_ALT_LEFT_ON | AMETA_ALT_RIGHT_ON)) {
metastate |= AMETA_ALT_ON;
}
if (metastate & (AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON)) {
metastate |= AMETA_META_ON;
}
return metastate;
}
static enum android_metastate
convert_meta_state(uint16_t mod) {
enum android_metastate metastate = 0;
if (mod & SC_MOD_LSHIFT) {
metastate |= AMETA_SHIFT_LEFT_ON;
}
if (mod & SC_MOD_RSHIFT) {
metastate |= AMETA_SHIFT_RIGHT_ON;
}
if (mod & SC_MOD_LCTRL) {
metastate |= AMETA_CTRL_LEFT_ON;
}
if (mod & SC_MOD_RCTRL) {
metastate |= AMETA_CTRL_RIGHT_ON;
}
if (mod & SC_MOD_LALT) {
metastate |= AMETA_ALT_LEFT_ON;
}
if (mod & SC_MOD_RALT) {
metastate |= AMETA_ALT_RIGHT_ON;
}
if (mod & SC_MOD_LGUI) { // Windows key
metastate |= AMETA_META_LEFT_ON;
}
if (mod & SC_MOD_RGUI) { // Windows key
metastate |= AMETA_META_RIGHT_ON;
}
if (mod & SC_MOD_NUM) {
metastate |= AMETA_NUM_LOCK_ON;
}
if (mod & SC_MOD_CAPS) {
metastate |= AMETA_CAPS_LOCK_ON;
}
// fill the dependent fields
return autocomplete_metastate(metastate);
}
static bool
convert_input_key(const struct sc_key_event *event, struct sc_control_msg *msg,
enum sc_key_inject_mode key_inject_mode, uint32_t repeat) {
msg->type = SC_CONTROL_MSG_TYPE_INJECT_KEYCODE;
if (!convert_keycode(event->keycode, &msg->inject_keycode.keycode,
event->mods_state, key_inject_mode)) {
return false;
}
msg->inject_keycode.action = convert_keycode_action(event->action);
msg->inject_keycode.repeat = repeat;
msg->inject_keycode.metastate = convert_meta_state(event->mods_state);
return true;
}
static void
sc_key_processor_process_key(struct sc_key_processor *kp,
const struct sc_key_event *event,
uint64_t ack_to_wait) {
// The device clipboard synchronization and the key event messages are
// serialized, there is nothing special to do to ensure that the clipboard
// is set before injecting Ctrl+v.
(void) ack_to_wait;
struct sc_keyboard_inject *ki = DOWNCAST(kp);
if (event->repeat) {
if (!ki->forward_key_repeat) {
return;
}
++ki->repeat;
} else {
ki->repeat = 0;
}
struct sc_control_msg msg;
if (convert_input_key(event, &msg, ki->key_inject_mode, ki->repeat)) {
if (!sc_controller_push_msg(ki->controller, &msg)) {
LOGW("Could not request 'inject keycode'");
}
}
}
static void
sc_key_processor_process_text(struct sc_key_processor *kp,
const struct sc_text_event *event) {
struct sc_keyboard_inject *ki = DOWNCAST(kp);
if (ki->key_inject_mode == SC_KEY_INJECT_MODE_RAW) {
// Never inject text events
return;
}
if (ki->key_inject_mode == SC_KEY_INJECT_MODE_MIXED) {
char c = event->text[0];
if (isalpha(c) || c == ' ') {
assert(event->text[1] == '\0');
// Letters and space are handled as raw key events
return;
}
}
struct sc_control_msg msg;
msg.type = SC_CONTROL_MSG_TYPE_INJECT_TEXT;
msg.inject_text.text = strdup(event->text);
if (!msg.inject_text.text) {
LOGW("Could not strdup input text");
return;
}
if (!sc_controller_push_msg(ki->controller, &msg)) {
free(msg.inject_text.text);
LOGW("Could not request 'inject text'");
}
}
void
sc_keyboard_inject_init(struct sc_keyboard_inject *ki,
struct sc_controller *controller,
enum sc_key_inject_mode key_inject_mode,
bool forward_key_repeat) {
ki->controller = controller;
ki->key_inject_mode = key_inject_mode;
ki->forward_key_repeat = forward_key_repeat;
ki->repeat = 0;
static const struct sc_key_processor_ops ops = {
.process_key = sc_key_processor_process_key,
.process_text = sc_key_processor_process_text,
};
// Key injection and clipboard synchronization are serialized
ki->key_processor.async_paste = false;
ki->key_processor.ops = &ops;
}
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