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https://gitlab.com/qemu-project/qemu
synced 2024-09-06 18:05:37 +00:00
![Eric Blake](/assets/img/avatar_default.png)
Anywhere we create a list of just one item or by prepending items (typically because order doesn't matter), we can use QAPI_LIST_PREPEND(). But places where we must keep the list in order by appending remain open-coded until later patches. Note that as a side effect, this also performs a cleanup of two minor issues in qga/commands-posix.c: the old code was performing new = g_malloc0(sizeof(*ret)); which 1) is confusing because you have to verify whether 'new' and 'ret' are variables with the same type, and 2) would conflict with C++ compilation (not an actual problem for this file, but makes copy-and-paste harder). Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20201113011340.463563-5-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> [Straightforward conflicts due to commita8aa94b5f8
"qga: update schema for guest-get-disks 'dependents' field" and commita10b453a52
"target/mips: Move mips_cpu_add_definition() from helper.c to cpu.c" resolved. Commit message tweaked.] Signed-off-by: Markus Armbruster <armbru@redhat.com>
623 lines
17 KiB
C
623 lines
17 KiB
C
#include "qemu/osdep.h"
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#include "sysemu/sysemu.h"
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#include "qapi/error.h"
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#include "qapi/qapi-commands-ui.h"
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#include "qapi/qmp/qdict.h"
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#include "qemu/error-report.h"
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#include "trace.h"
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#include "ui/input.h"
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#include "ui/console.h"
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#include "sysemu/replay.h"
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#include "sysemu/runstate.h"
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struct QemuInputHandlerState {
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DeviceState *dev;
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QemuInputHandler *handler;
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int id;
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int events;
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QemuConsole *con;
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QTAILQ_ENTRY(QemuInputHandlerState) node;
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};
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typedef struct QemuInputEventQueue QemuInputEventQueue;
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typedef QTAILQ_HEAD(QemuInputEventQueueHead, QemuInputEventQueue)
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QemuInputEventQueueHead;
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struct QemuInputEventQueue {
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enum {
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QEMU_INPUT_QUEUE_DELAY = 1,
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QEMU_INPUT_QUEUE_EVENT,
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QEMU_INPUT_QUEUE_SYNC,
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} type;
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QEMUTimer *timer;
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uint32_t delay_ms;
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QemuConsole *src;
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InputEvent *evt;
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QTAILQ_ENTRY(QemuInputEventQueue) node;
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};
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static QTAILQ_HEAD(, QemuInputHandlerState) handlers =
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QTAILQ_HEAD_INITIALIZER(handlers);
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static NotifierList mouse_mode_notifiers =
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NOTIFIER_LIST_INITIALIZER(mouse_mode_notifiers);
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static QemuInputEventQueueHead kbd_queue = QTAILQ_HEAD_INITIALIZER(kbd_queue);
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static QEMUTimer *kbd_timer;
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static uint32_t kbd_default_delay_ms = 10;
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static uint32_t queue_count;
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static uint32_t queue_limit = 1024;
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QemuInputHandlerState *qemu_input_handler_register(DeviceState *dev,
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QemuInputHandler *handler)
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{
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QemuInputHandlerState *s = g_new0(QemuInputHandlerState, 1);
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static int id = 1;
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s->dev = dev;
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s->handler = handler;
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s->id = id++;
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QTAILQ_INSERT_TAIL(&handlers, s, node);
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qemu_input_check_mode_change();
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return s;
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}
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void qemu_input_handler_activate(QemuInputHandlerState *s)
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{
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QTAILQ_REMOVE(&handlers, s, node);
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QTAILQ_INSERT_HEAD(&handlers, s, node);
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qemu_input_check_mode_change();
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}
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void qemu_input_handler_deactivate(QemuInputHandlerState *s)
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{
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QTAILQ_REMOVE(&handlers, s, node);
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QTAILQ_INSERT_TAIL(&handlers, s, node);
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qemu_input_check_mode_change();
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}
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void qemu_input_handler_unregister(QemuInputHandlerState *s)
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{
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QTAILQ_REMOVE(&handlers, s, node);
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g_free(s);
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qemu_input_check_mode_change();
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}
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void qemu_input_handler_bind(QemuInputHandlerState *s,
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const char *device_id, int head,
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Error **errp)
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{
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QemuConsole *con;
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Error *err = NULL;
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con = qemu_console_lookup_by_device_name(device_id, head, &err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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s->con = con;
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}
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static QemuInputHandlerState*
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qemu_input_find_handler(uint32_t mask, QemuConsole *con)
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{
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QemuInputHandlerState *s;
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QTAILQ_FOREACH(s, &handlers, node) {
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if (s->con == NULL || s->con != con) {
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continue;
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}
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if (mask & s->handler->mask) {
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return s;
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}
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}
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QTAILQ_FOREACH(s, &handlers, node) {
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if (s->con != NULL) {
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continue;
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}
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if (mask & s->handler->mask) {
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return s;
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}
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}
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return NULL;
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}
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void qmp_input_send_event(bool has_device, const char *device,
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bool has_head, int64_t head,
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InputEventList *events, Error **errp)
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{
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InputEventList *e;
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QemuConsole *con;
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Error *err = NULL;
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con = NULL;
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if (has_device) {
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if (!has_head) {
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head = 0;
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}
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con = qemu_console_lookup_by_device_name(device, head, &err);
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if (err) {
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error_propagate(errp, err);
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return;
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}
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}
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if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
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error_setg(errp, "VM not running");
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return;
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}
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for (e = events; e != NULL; e = e->next) {
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InputEvent *event = e->value;
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if (!qemu_input_find_handler(1 << event->type, con)) {
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error_setg(errp, "Input handler not found for "
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"event type %s",
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InputEventKind_str(event->type));
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return;
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}
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}
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for (e = events; e != NULL; e = e->next) {
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InputEvent *evt = e->value;
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if (evt->type == INPUT_EVENT_KIND_KEY &&
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evt->u.key.data->key->type == KEY_VALUE_KIND_NUMBER) {
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KeyValue *key = evt->u.key.data->key;
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QKeyCode code = qemu_input_key_number_to_qcode(key->u.number.data);
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qemu_input_event_send_key_qcode(con, code, evt->u.key.data->down);
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} else {
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qemu_input_event_send(con, evt);
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}
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}
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qemu_input_event_sync();
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}
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static int qemu_input_transform_invert_abs_value(int value)
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{
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return (int64_t)INPUT_EVENT_ABS_MAX - value + INPUT_EVENT_ABS_MIN;
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}
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static void qemu_input_transform_abs_rotate(InputEvent *evt)
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{
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InputMoveEvent *move = evt->u.abs.data;
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switch (graphic_rotate) {
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case 90:
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if (move->axis == INPUT_AXIS_X) {
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move->axis = INPUT_AXIS_Y;
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} else if (move->axis == INPUT_AXIS_Y) {
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move->axis = INPUT_AXIS_X;
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move->value = qemu_input_transform_invert_abs_value(move->value);
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}
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break;
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case 180:
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move->value = qemu_input_transform_invert_abs_value(move->value);
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break;
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case 270:
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if (move->axis == INPUT_AXIS_X) {
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move->axis = INPUT_AXIS_Y;
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move->value = qemu_input_transform_invert_abs_value(move->value);
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} else if (move->axis == INPUT_AXIS_Y) {
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move->axis = INPUT_AXIS_X;
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}
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break;
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}
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}
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static void qemu_input_event_trace(QemuConsole *src, InputEvent *evt)
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{
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const char *name;
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int qcode, idx = -1;
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InputKeyEvent *key;
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InputBtnEvent *btn;
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InputMoveEvent *move;
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if (src) {
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idx = qemu_console_get_index(src);
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}
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switch (evt->type) {
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case INPUT_EVENT_KIND_KEY:
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key = evt->u.key.data;
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switch (key->key->type) {
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case KEY_VALUE_KIND_NUMBER:
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qcode = qemu_input_key_number_to_qcode(key->key->u.number.data);
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name = QKeyCode_str(qcode);
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trace_input_event_key_number(idx, key->key->u.number.data,
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name, key->down);
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break;
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case KEY_VALUE_KIND_QCODE:
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name = QKeyCode_str(key->key->u.qcode.data);
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trace_input_event_key_qcode(idx, name, key->down);
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break;
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case KEY_VALUE_KIND__MAX:
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/* keep gcc happy */
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break;
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}
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break;
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case INPUT_EVENT_KIND_BTN:
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btn = evt->u.btn.data;
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name = InputButton_str(btn->button);
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trace_input_event_btn(idx, name, btn->down);
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break;
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case INPUT_EVENT_KIND_REL:
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move = evt->u.rel.data;
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name = InputAxis_str(move->axis);
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trace_input_event_rel(idx, name, move->value);
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break;
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case INPUT_EVENT_KIND_ABS:
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move = evt->u.abs.data;
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name = InputAxis_str(move->axis);
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trace_input_event_abs(idx, name, move->value);
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break;
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case INPUT_EVENT_KIND__MAX:
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/* keep gcc happy */
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break;
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}
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}
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static void qemu_input_queue_process(void *opaque)
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{
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QemuInputEventQueueHead *queue = opaque;
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QemuInputEventQueue *item;
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g_assert(!QTAILQ_EMPTY(queue));
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item = QTAILQ_FIRST(queue);
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g_assert(item->type == QEMU_INPUT_QUEUE_DELAY);
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QTAILQ_REMOVE(queue, item, node);
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queue_count--;
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g_free(item);
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while (!QTAILQ_EMPTY(queue)) {
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item = QTAILQ_FIRST(queue);
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switch (item->type) {
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case QEMU_INPUT_QUEUE_DELAY:
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timer_mod(item->timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)
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+ item->delay_ms);
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return;
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case QEMU_INPUT_QUEUE_EVENT:
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qemu_input_event_send(item->src, item->evt);
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qapi_free_InputEvent(item->evt);
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break;
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case QEMU_INPUT_QUEUE_SYNC:
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qemu_input_event_sync();
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break;
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}
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QTAILQ_REMOVE(queue, item, node);
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queue_count--;
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g_free(item);
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}
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}
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static void qemu_input_queue_delay(QemuInputEventQueueHead *queue,
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QEMUTimer *timer, uint32_t delay_ms)
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{
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QemuInputEventQueue *item = g_new0(QemuInputEventQueue, 1);
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bool start_timer = QTAILQ_EMPTY(queue);
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item->type = QEMU_INPUT_QUEUE_DELAY;
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item->delay_ms = delay_ms;
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item->timer = timer;
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QTAILQ_INSERT_TAIL(queue, item, node);
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queue_count++;
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if (start_timer) {
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timer_mod(item->timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)
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+ item->delay_ms);
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}
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}
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static void qemu_input_queue_event(QemuInputEventQueueHead *queue,
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QemuConsole *src, InputEvent *evt)
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{
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QemuInputEventQueue *item = g_new0(QemuInputEventQueue, 1);
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item->type = QEMU_INPUT_QUEUE_EVENT;
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item->src = src;
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item->evt = evt;
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QTAILQ_INSERT_TAIL(queue, item, node);
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queue_count++;
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}
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static void qemu_input_queue_sync(QemuInputEventQueueHead *queue)
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{
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QemuInputEventQueue *item = g_new0(QemuInputEventQueue, 1);
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item->type = QEMU_INPUT_QUEUE_SYNC;
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QTAILQ_INSERT_TAIL(queue, item, node);
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queue_count++;
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}
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void qemu_input_event_send_impl(QemuConsole *src, InputEvent *evt)
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{
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QemuInputHandlerState *s;
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qemu_input_event_trace(src, evt);
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/* pre processing */
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if (graphic_rotate && (evt->type == INPUT_EVENT_KIND_ABS)) {
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qemu_input_transform_abs_rotate(evt);
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}
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/* send event */
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s = qemu_input_find_handler(1 << evt->type, src);
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if (!s) {
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return;
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}
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s->handler->event(s->dev, src, evt);
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s->events++;
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}
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void qemu_input_event_send(QemuConsole *src, InputEvent *evt)
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{
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/* Expect all parts of QEMU to send events with QCodes exclusively.
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* Key numbers are only supported as end-user input via QMP */
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assert(!(evt->type == INPUT_EVENT_KIND_KEY &&
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evt->u.key.data->key->type == KEY_VALUE_KIND_NUMBER));
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/*
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* 'sysrq' was mistakenly added to hack around the fact that
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* the ps2 driver was not generating correct scancodes sequences
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* when 'alt+print' was pressed. This flaw is now fixed and the
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* 'sysrq' key serves no further purpose. We normalize it to
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* 'print', so that downstream receivers of the event don't
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* neeed to deal with this mistake
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*/
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if (evt->type == INPUT_EVENT_KIND_KEY &&
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evt->u.key.data->key->u.qcode.data == Q_KEY_CODE_SYSRQ) {
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evt->u.key.data->key->u.qcode.data = Q_KEY_CODE_PRINT;
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}
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if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
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return;
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}
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replay_input_event(src, evt);
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}
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void qemu_input_event_sync_impl(void)
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{
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QemuInputHandlerState *s;
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trace_input_event_sync();
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QTAILQ_FOREACH(s, &handlers, node) {
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if (!s->events) {
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continue;
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}
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if (s->handler->sync) {
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s->handler->sync(s->dev);
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}
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s->events = 0;
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}
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}
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void qemu_input_event_sync(void)
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{
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if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
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return;
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}
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replay_input_sync_event();
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}
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static InputEvent *qemu_input_event_new_key(KeyValue *key, bool down)
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{
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InputEvent *evt = g_new0(InputEvent, 1);
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evt->u.key.data = g_new0(InputKeyEvent, 1);
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evt->type = INPUT_EVENT_KIND_KEY;
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evt->u.key.data->key = key;
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evt->u.key.data->down = down;
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return evt;
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}
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void qemu_input_event_send_key(QemuConsole *src, KeyValue *key, bool down)
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{
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InputEvent *evt;
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evt = qemu_input_event_new_key(key, down);
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if (QTAILQ_EMPTY(&kbd_queue)) {
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qemu_input_event_send(src, evt);
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qemu_input_event_sync();
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qapi_free_InputEvent(evt);
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} else if (queue_count < queue_limit) {
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qemu_input_queue_event(&kbd_queue, src, evt);
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qemu_input_queue_sync(&kbd_queue);
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} else {
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qapi_free_InputEvent(evt);
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}
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}
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void qemu_input_event_send_key_number(QemuConsole *src, int num, bool down)
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{
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QKeyCode code = qemu_input_key_number_to_qcode(num);
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qemu_input_event_send_key_qcode(src, code, down);
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}
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void qemu_input_event_send_key_qcode(QemuConsole *src, QKeyCode q, bool down)
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{
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KeyValue *key = g_new0(KeyValue, 1);
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key->type = KEY_VALUE_KIND_QCODE;
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key->u.qcode.data = q;
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qemu_input_event_send_key(src, key, down);
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}
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void qemu_input_event_send_key_delay(uint32_t delay_ms)
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{
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if (!runstate_is_running() && !runstate_check(RUN_STATE_SUSPENDED)) {
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return;
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}
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if (!kbd_timer) {
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kbd_timer = timer_new_full(NULL, QEMU_CLOCK_VIRTUAL,
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SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL,
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qemu_input_queue_process, &kbd_queue);
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}
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if (queue_count < queue_limit) {
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qemu_input_queue_delay(&kbd_queue, kbd_timer,
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delay_ms ? delay_ms : kbd_default_delay_ms);
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}
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}
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void qemu_input_queue_btn(QemuConsole *src, InputButton btn, bool down)
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|
{
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InputBtnEvent bevt = {
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.button = btn,
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.down = down,
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};
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InputEvent evt = {
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.type = INPUT_EVENT_KIND_BTN,
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.u.btn.data = &bevt,
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};
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qemu_input_event_send(src, &evt);
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}
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void qemu_input_update_buttons(QemuConsole *src, uint32_t *button_map,
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uint32_t button_old, uint32_t button_new)
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|
{
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InputButton btn;
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|
uint32_t mask;
|
|
|
|
for (btn = 0; btn < INPUT_BUTTON__MAX; btn++) {
|
|
mask = button_map[btn];
|
|
if ((button_old & mask) == (button_new & mask)) {
|
|
continue;
|
|
}
|
|
qemu_input_queue_btn(src, btn, button_new & mask);
|
|
}
|
|
}
|
|
|
|
bool qemu_input_is_absolute(void)
|
|
{
|
|
QemuInputHandlerState *s;
|
|
|
|
s = qemu_input_find_handler(INPUT_EVENT_MASK_REL | INPUT_EVENT_MASK_ABS,
|
|
NULL);
|
|
return (s != NULL) && (s->handler->mask & INPUT_EVENT_MASK_ABS);
|
|
}
|
|
|
|
int qemu_input_scale_axis(int value,
|
|
int min_in, int max_in,
|
|
int min_out, int max_out)
|
|
{
|
|
int64_t range_in = (int64_t)max_in - min_in;
|
|
int64_t range_out = (int64_t)max_out - min_out;
|
|
|
|
if (range_in < 1) {
|
|
return min_out + range_out / 2;
|
|
}
|
|
return ((int64_t)value - min_in) * range_out / range_in + min_out;
|
|
}
|
|
|
|
void qemu_input_queue_rel(QemuConsole *src, InputAxis axis, int value)
|
|
{
|
|
InputMoveEvent move = {
|
|
.axis = axis,
|
|
.value = value,
|
|
};
|
|
InputEvent evt = {
|
|
.type = INPUT_EVENT_KIND_REL,
|
|
.u.rel.data = &move,
|
|
};
|
|
|
|
qemu_input_event_send(src, &evt);
|
|
}
|
|
|
|
void qemu_input_queue_abs(QemuConsole *src, InputAxis axis, int value,
|
|
int min_in, int max_in)
|
|
{
|
|
InputMoveEvent move = {
|
|
.axis = axis,
|
|
.value = qemu_input_scale_axis(value, min_in, max_in,
|
|
INPUT_EVENT_ABS_MIN,
|
|
INPUT_EVENT_ABS_MAX),
|
|
};
|
|
InputEvent evt = {
|
|
.type = INPUT_EVENT_KIND_ABS,
|
|
.u.abs.data = &move,
|
|
};
|
|
|
|
qemu_input_event_send(src, &evt);
|
|
}
|
|
|
|
void qemu_input_check_mode_change(void)
|
|
{
|
|
static int current_is_absolute;
|
|
int is_absolute;
|
|
|
|
is_absolute = qemu_input_is_absolute();
|
|
|
|
if (is_absolute != current_is_absolute) {
|
|
trace_input_mouse_mode(is_absolute);
|
|
notifier_list_notify(&mouse_mode_notifiers, NULL);
|
|
}
|
|
|
|
current_is_absolute = is_absolute;
|
|
}
|
|
|
|
void qemu_add_mouse_mode_change_notifier(Notifier *notify)
|
|
{
|
|
notifier_list_add(&mouse_mode_notifiers, notify);
|
|
}
|
|
|
|
void qemu_remove_mouse_mode_change_notifier(Notifier *notify)
|
|
{
|
|
notifier_remove(notify);
|
|
}
|
|
|
|
MouseInfoList *qmp_query_mice(Error **errp)
|
|
{
|
|
MouseInfoList *mice_list = NULL;
|
|
MouseInfo *info;
|
|
QemuInputHandlerState *s;
|
|
bool current = true;
|
|
|
|
QTAILQ_FOREACH(s, &handlers, node) {
|
|
if (!(s->handler->mask &
|
|
(INPUT_EVENT_MASK_REL | INPUT_EVENT_MASK_ABS))) {
|
|
continue;
|
|
}
|
|
|
|
info = g_new0(MouseInfo, 1);
|
|
info->index = s->id;
|
|
info->name = g_strdup(s->handler->name);
|
|
info->absolute = s->handler->mask & INPUT_EVENT_MASK_ABS;
|
|
info->current = current;
|
|
|
|
current = false;
|
|
QAPI_LIST_PREPEND(mice_list, info);
|
|
}
|
|
|
|
return mice_list;
|
|
}
|
|
|
|
void hmp_mouse_set(Monitor *mon, const QDict *qdict)
|
|
{
|
|
QemuInputHandlerState *s;
|
|
int index = qdict_get_int(qdict, "index");
|
|
int found = 0;
|
|
|
|
QTAILQ_FOREACH(s, &handlers, node) {
|
|
if (s->id != index) {
|
|
continue;
|
|
}
|
|
if (!(s->handler->mask & (INPUT_EVENT_MASK_REL |
|
|
INPUT_EVENT_MASK_ABS))) {
|
|
error_report("Input device '%s' is not a mouse", s->handler->name);
|
|
return;
|
|
}
|
|
found = 1;
|
|
qemu_input_handler_activate(s);
|
|
break;
|
|
}
|
|
|
|
if (!found) {
|
|
error_report("Mouse at index '%d' not found", index);
|
|
}
|
|
|
|
qemu_input_check_mode_change();
|
|
}
|