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scrcpy/app/src/control_msg.c
Simon Chan 0afef0c634 Forward action button to device 
On click event, only the whole buttons state was passed to the device.
In addition, on ACTION_DOWN and ACTION_UP, pass the button associated to
the action.

Refs #3635 <https://github.com/Genymobile/scrcpy/issues/3635>

Co-authored-by: Romain Vimont <rom@rom1v.com>
Signed-off-by: Romain Vimont <rom@rom1v.com>
2023-01-30 20:57:54 +01:00

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#include "control_msg.h"
#include <assert.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.h>
#include "util/binary.h"
#include "util/log.h"
#include "util/str.h"
/**
* Map an enum value to a string based on an array, without crashing on an
* out-of-bounds index.
*/
#define ENUM_TO_LABEL(labels, value) \
((size_t) (value) < ARRAY_LEN(labels) ? labels[value] : "???")
#define KEYEVENT_ACTION_LABEL(value) \
ENUM_TO_LABEL(android_keyevent_action_labels, value)
#define MOTIONEVENT_ACTION_LABEL(value) \
ENUM_TO_LABEL(android_motionevent_action_labels, value)
#define SCREEN_POWER_MODE_LABEL(value) \
ENUM_TO_LABEL(screen_power_mode_labels, value)
static const char *const android_keyevent_action_labels[] = {
"down",
"up",
"multi",
};
static const char *const android_motionevent_action_labels[] = {
"down",
"up",
"move",
"cancel",
"outside",
"pointer-down",
"pointer-up",
"hover-move",
"scroll",
"hover-enter",
"hover-exit",
"btn-press",
"btn-release",
};
static const char *const screen_power_mode_labels[] = {
"off",
"doze",
"normal",
"doze-suspend",
"suspend",
};
static const char *const copy_key_labels[] = {
"none",
"copy",
"cut",
};
static inline const char *
get_well_known_pointer_id_name(uint64_t pointer_id) {
switch (pointer_id) {
case POINTER_ID_MOUSE:
return "mouse";
case POINTER_ID_GENERIC_FINGER:
return "finger";
case POINTER_ID_VIRTUAL_MOUSE:
return "vmouse";
case POINTER_ID_VIRTUAL_FINGER:
return "vfinger";
default:
return NULL;
}
}
static void
write_position(uint8_t *buf, const struct sc_position *position) {
sc_write32be(&buf[0], position->point.x);
sc_write32be(&buf[4], position->point.y);
sc_write16be(&buf[8], position->screen_size.width);
sc_write16be(&buf[10], position->screen_size.height);
}
// write length (4 bytes) + string (non null-terminated)
static size_t
write_string(const char *utf8, size_t max_len, unsigned char *buf) {
size_t len = sc_str_utf8_truncation_index(utf8, max_len);
sc_write32be(buf, len);
memcpy(&buf[4], utf8, len);
return 4 + len;
}
size_t
sc_control_msg_serialize(const struct sc_control_msg *msg, unsigned char *buf) {
buf[0] = msg->type;
switch (msg->type) {
case SC_CONTROL_MSG_TYPE_INJECT_KEYCODE:
buf[1] = msg->inject_keycode.action;
sc_write32be(&buf[2], msg->inject_keycode.keycode);
sc_write32be(&buf[6], msg->inject_keycode.repeat);
sc_write32be(&buf[10], msg->inject_keycode.metastate);
return 14;
case SC_CONTROL_MSG_TYPE_INJECT_TEXT: {
size_t len =
write_string(msg->inject_text.text,
SC_CONTROL_MSG_INJECT_TEXT_MAX_LENGTH, &buf[1]);
return 1 + len;
}
case SC_CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT:
buf[1] = msg->inject_touch_event.action;
sc_write64be(&buf[2], msg->inject_touch_event.pointer_id);
write_position(&buf[10], &msg->inject_touch_event.position);
uint16_t pressure =
sc_float_to_u16fp(msg->inject_touch_event.pressure);
sc_write16be(&buf[22], pressure);
sc_write32be(&buf[24], msg->inject_touch_event.action_button);
sc_write32be(&buf[28], msg->inject_touch_event.buttons);
return 32;
case SC_CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT:
write_position(&buf[1], &msg->inject_scroll_event.position);
int16_t hscroll =
sc_float_to_i16fp(msg->inject_scroll_event.hscroll);
int16_t vscroll =
sc_float_to_i16fp(msg->inject_scroll_event.vscroll);
sc_write16be(&buf[13], (uint16_t) hscroll);
sc_write16be(&buf[15], (uint16_t) vscroll);
sc_write32be(&buf[17], msg->inject_scroll_event.buttons);
return 21;
case SC_CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
buf[1] = msg->inject_keycode.action;
return 2;
case SC_CONTROL_MSG_TYPE_GET_CLIPBOARD:
buf[1] = msg->get_clipboard.copy_key;
return 2;
case SC_CONTROL_MSG_TYPE_SET_CLIPBOARD:
sc_write64be(&buf[1], msg->set_clipboard.sequence);
buf[9] = !!msg->set_clipboard.paste;
size_t len = write_string(msg->set_clipboard.text,
SC_CONTROL_MSG_CLIPBOARD_TEXT_MAX_LENGTH,
&buf[10]);
return 10 + len;
case SC_CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE:
buf[1] = msg->set_screen_power_mode.mode;
return 2;
case SC_CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL:
case SC_CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL:
case SC_CONTROL_MSG_TYPE_COLLAPSE_PANELS:
case SC_CONTROL_MSG_TYPE_ROTATE_DEVICE:
// no additional data
return 1;
default:
LOGW("Unknown message type: %u", (unsigned) msg->type);
return 0;
}
}
void
sc_control_msg_log(const struct sc_control_msg *msg) {
#define LOG_CMSG(fmt, ...) LOGV("input: " fmt, ## __VA_ARGS__)
switch (msg->type) {
case SC_CONTROL_MSG_TYPE_INJECT_KEYCODE:
LOG_CMSG("key %-4s code=%d repeat=%" PRIu32 " meta=%06lx",
KEYEVENT_ACTION_LABEL(msg->inject_keycode.action),
(int) msg->inject_keycode.keycode,
msg->inject_keycode.repeat,
(long) msg->inject_keycode.metastate);
break;
case SC_CONTROL_MSG_TYPE_INJECT_TEXT:
LOG_CMSG("text \"%s\"", msg->inject_text.text);
break;
case SC_CONTROL_MSG_TYPE_INJECT_TOUCH_EVENT: {
int action = msg->inject_touch_event.action
& AMOTION_EVENT_ACTION_MASK;
uint64_t id = msg->inject_touch_event.pointer_id;
const char *pointer_name = get_well_known_pointer_id_name(id);
if (pointer_name) {
// string pointer id
LOG_CMSG("touch [id=%s] %-4s position=%" PRIi32 ",%" PRIi32
" pressure=%f action_button=%06lx buttons=%06lx",
pointer_name,
MOTIONEVENT_ACTION_LABEL(action),
msg->inject_touch_event.position.point.x,
msg->inject_touch_event.position.point.y,
msg->inject_touch_event.pressure,
(long) msg->inject_touch_event.action_button,
(long) msg->inject_touch_event.buttons);
} else {
// numeric pointer id
LOG_CMSG("touch [id=%" PRIu64_ "] %-4s position=%" PRIi32 ",%"
PRIi32 " pressure=%f action_button=%06lx"
" buttons=%06lx",
id,
MOTIONEVENT_ACTION_LABEL(action),
msg->inject_touch_event.position.point.x,
msg->inject_touch_event.position.point.y,
msg->inject_touch_event.pressure,
(long) msg->inject_touch_event.action_button,
(long) msg->inject_touch_event.buttons);
}
break;
}
case SC_CONTROL_MSG_TYPE_INJECT_SCROLL_EVENT:
LOG_CMSG("scroll position=%" PRIi32 ",%" PRIi32 " hscroll=%f"
" vscroll=%f buttons=%06lx",
msg->inject_scroll_event.position.point.x,
msg->inject_scroll_event.position.point.y,
msg->inject_scroll_event.hscroll,
msg->inject_scroll_event.vscroll,
(long) msg->inject_scroll_event.buttons);
break;
case SC_CONTROL_MSG_TYPE_BACK_OR_SCREEN_ON:
LOG_CMSG("back-or-screen-on %s",
KEYEVENT_ACTION_LABEL(msg->inject_keycode.action));
break;
case SC_CONTROL_MSG_TYPE_GET_CLIPBOARD:
LOG_CMSG("get clipboard copy_key=%s",
copy_key_labels[msg->get_clipboard.copy_key]);
break;
case SC_CONTROL_MSG_TYPE_SET_CLIPBOARD:
LOG_CMSG("clipboard %" PRIu64_ " %s \"%s\"",
msg->set_clipboard.sequence,
msg->set_clipboard.paste ? "paste" : "nopaste",
msg->set_clipboard.text);
break;
case SC_CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE:
LOG_CMSG("power mode %s",
SCREEN_POWER_MODE_LABEL(msg->set_screen_power_mode.mode));
break;
case SC_CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL:
LOG_CMSG("expand notification panel");
break;
case SC_CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL:
LOG_CMSG("expand settings panel");
break;
case SC_CONTROL_MSG_TYPE_COLLAPSE_PANELS:
LOG_CMSG("collapse panels");
break;
case SC_CONTROL_MSG_TYPE_ROTATE_DEVICE:
LOG_CMSG("rotate device");
break;
default:
LOG_CMSG("unknown type: %u", (unsigned) msg->type);
break;
}
}
void
sc_control_msg_destroy(struct sc_control_msg *msg) {
switch (msg->type) {
case SC_CONTROL_MSG_TYPE_INJECT_TEXT:
free(msg->inject_text.text);
break;
case SC_CONTROL_MSG_TYPE_SET_CLIPBOARD:
free(msg->set_clipboard.text);
break;
default:
// do nothing
break;
}
}
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