249 function protoDecoder(buffer, fileType, fileName, store) {  argument
250   var decoded = fileType.decoderParams.protoType.decode(buffer);
259   let blobUrl = URL.createObjectURL(new Blob([buffer], { type: fileType.dataType.mime }));
263 function videoDecoder(buffer, fileType, fileName, store) {  argument
264   let [data, timeline] = fileType.decoderParams.videoDecoder(buffer);
299 function decodedFile(fileType, buffer, fileName, store) {  argument
300   return [fileType, fileType.decoder(buffer, fileType, fileName, store)];
303 function detectAndDecode(buffer, fileName, store) {  argument
304   if (arrayStartsWith(buffer, LAYER_TRACE_MAGIC_NUMBER)) {
305     return decodedFile(FILE_TYPES['layers_trace'], buffer, fileName, store);
307   if (arrayStartsWith(buffer, WINDOW_TRACE_MAGIC_NUMBER)) {
308     return decodedFile(FILE_TYPES['window_trace'], buffer, fileName, store);
310   if (arrayStartsWith(buffer, MPEG4_MAGIC_NMBER)) {
311     return decodedFile(FILE_TYPES['screen_recording'], buffer, fileName, store);
313   if (arrayStartsWith(buffer, WAYLAND_TRACE_MAGIC_NUMBER)) {
314     return decodedFile(FILE_TYPES['wl_trace'], buffer, fileName, store);
316   if (arrayStartsWith(buffer, PROTO_LOG_MAGIC_NUMBER)) {
317     return decodedFile(FILE_TYPES['proto_log'], buffer, fileName, store);
319   if (arrayStartsWith(buffer, SYSTEM_UI_MAGIC_NUMBER)) {
320     return decodedFile(FILE_TYPES['system_ui_trace'], buffer, fileName, store);
322   if (arrayStartsWith(buffer, LAUNCHER_MAGIC_NUMBER)) {
323     return decodedFile(FILE_TYPES['launcher_trace'], buffer, fileName, store);
327       return decodedFile(FILE_TYPES[name], buffer, fileName, store);