Add argument to calculate checksums

src/io/serialize.c

@@ -74,6 +74,8 @@ char *get_meta_key_text(enum metakey meta_key) {
             return "exif_gps_latitude_dms";
         case MetaExifGpsLatitudeDec:
             return "exif_gps_latitude_dec";
+        case MetaChecksum:
+            return "checksum";
         default:
         LOG_FATALF("serialize.c", "FIXME: Unknown meta key: %d", meta_key)
     }
@@ -165,6 +167,7 @@ char *build_json_string(document_t *doc) {
             case MetaExifGpsLatitudeDMS:
             case MetaExifGpsLatitudeDec:
             case MetaExifGpsLatitudeRef:
+            case MetaChecksum:
             case MetaTitle: {
                 cJSON_AddStringToObject(json, get_meta_key_text(meta->key), meta->str_val);
                 buffer_size_guess += (int) strlen(meta->str_val);

src/io/walk.c

@@ -28,6 +28,8 @@ parse_job_t *create_fs_parse_job(const char *filepath, const struct stat *info,
     job->vfile.close = fs_close;
     job->vfile.fd = -1;
     job->vfile.is_fs_file = TRUE;
+    job->vfile.has_checksum = FALSE;
+    job->vfile.calculate_checksum = ScanCtx.calculate_checksums;
 
     return job;
 }