scan media

app/src/control_msg.c

@@ -80,6 +80,13 @@ control_msg_serialize(const struct control_msg *msg, unsigned char *buf) {
         case CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE:
             buf[1] = msg->set_screen_power_mode.mode;
             return 2;
+        case CONTROL_MSG_TYPE_SCAN_MEDIA:
+        {
+            size_t len = write_string(msg->scan_media.path,
+                                      CONTROL_MSG_SCAN_MEDIA_PATH_MAX_LENGTH,
+                                      &buf[1]);
+            return 1 + len;
+        }
         case CONTROL_MSG_TYPE_EXPAND_NOTIFICATION_PANEL:
         case CONTROL_MSG_TYPE_EXPAND_SETTINGS_PANEL:
         case CONTROL_MSG_TYPE_COLLAPSE_PANELS:
@@ -102,6 +109,9 @@ control_msg_destroy(struct control_msg *msg) {
         case CONTROL_MSG_TYPE_SET_CLIPBOARD:
             free(msg->set_clipboard.text);
             break;
+        case CONTROL_MSG_TYPE_SCAN_MEDIA:
+            free(msg->scan_media.path);
+            break;
         default:
             // do nothing
             break;

app/src/control_msg.h

@@ -17,6 +17,8 @@
 // type: 1 byte; paste flag: 1 byte; length: 4 bytes
 #define CONTROL_MSG_CLIPBOARD_TEXT_MAX_LENGTH (CONTROL_MSG_MAX_SIZE - 6)
 
+#define CONTROL_MSG_SCAN_MEDIA_PATH_MAX_LENGTH 256
+
 #define POINTER_ID_MOUSE UINT64_C(-1);
 #define POINTER_ID_VIRTUAL_FINGER UINT64_C(-2);
 
@@ -33,6 +35,7 @@ enum control_msg_type {
     CONTROL_MSG_TYPE_SET_CLIPBOARD,
     CONTROL_MSG_TYPE_SET_SCREEN_POWER_MODE,
     CONTROL_MSG_TYPE_ROTATE_DEVICE,
+    CONTROL_MSG_TYPE_SCAN_MEDIA,
 };
 
 enum screen_power_mode {
@@ -76,6 +79,9 @@ struct control_msg {
         struct {
             enum screen_power_mode mode;
         } set_screen_power_mode;
+        struct {
+            char *path; // owned, to be freed by free()
+        } scan_media;
     };
 };
 

app/tests/test_control_msg_serialize.c

@@ -278,6 +278,28 @@ static void test_serialize_rotate_device(void) {
     assert(!memcmp(buf, expected, sizeof(expected)));
 }
 
+static void test_serialize_scan_media(void) {
+    struct control_msg msg = {
+        .type = CONTROL_MSG_TYPE_SCAN_MEDIA,
+        .scan_media = {
+            .path = "/sdcard/Download/",
+        },
+    };
+
+    unsigned char buf[CONTROL_MSG_MAX_SIZE];
+    size_t size = control_msg_serialize(&msg, buf);
+    assert(size == 22);
+
+    const unsigned char expected[] = {
+        CONTROL_MSG_TYPE_SCAN_MEDIA,
+        0x00, 0x00, 0x00, 0x11, // path length
+        '/', 's', 'd', 'c', 'a', 'r', 'd', '/',
+        'D', 'o', 'w', 'n', 'l', 'o', 'a', 'd',
+        '/' // path
+    };
+    assert(!memcmp(buf, expected, sizeof(expected)));
+}
+
 int main(int argc, char *argv[]) {
     (void) argc;
     (void) argv;
@@ -295,5 +317,6 @@ int main(int argc, char *argv[]) {
     test_serialize_set_clipboard();
     test_serialize_set_screen_power_mode();
     test_serialize_rotate_device();
+    test_serialize_scan_media();
     return 0;
 }