scrcpy/app/src/device_event.c

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#include "device_event.h"
#include <string.h>
#include <SDL2/SDL_assert.h>
#include "buffer_util.h"
#include "log.h"
ssize_t
device_event_deserialize(const unsigned char *buf, size_t len,
struct device_event *event) {
if (len < 3) {
// at least type + empty string length
return 0; // not available
}
event->type = buf[0];
switch (event->type) {
case DEVICE_EVENT_TYPE_GET_CLIPBOARD: {
uint16_t clipboard_len = buffer_read16be(&buf[1]);
if (clipboard_len > len - 3) {
return 0; // not available
}
char *text = SDL_malloc(clipboard_len + 1);
if (!text) {
LOGW("Could not allocate text for clipboard");
return -1;
}
if (clipboard_len) {
memcpy(text, &buf[3], clipboard_len);
}
text[clipboard_len] = '\0';
event->clipboard_event.text = text;
return 3 + clipboard_len;
}
default:
LOGW("Unsupported device event type: %d", (int) event->type);
return -1; // error, we cannot recover
}
}
void
device_event_destroy(struct device_event *event) {
if (event->type == DEVICE_EVENT_TYPE_GET_CLIPBOARD) {
SDL_free(event->clipboard_event.text);
}
}