1311bed5e9
Restore Gaia settings and media workflows, extend native network adapters, and align the APK payload. Generate French/English changelogs and website entries from the simplified JSON source. Validation: shared JS and Tundra unit tests; desktop workflows and persistence; signed APK payload parity; Sargo RAM and installed startup with boot readback. Android runtime qualification is recorded separately.
101 lines
2.6 KiB
JavaScript
101 lines
2.6 KiB
JavaScript
define(function(require, exports, module) {
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'use strict';
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// This handles the logic pertaining to the naming of files according
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// to the Design rule for Camera File System
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// * http://en.wikipedia.org/wiki/Design_rule_for_Camera_File_system
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/**
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* Dependencies
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*/
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var asyncStorage = require('asyncStorage');
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var debug = require('debug')('dcf');
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var format = require('format');
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/**
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* Locals
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*/
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var dcfConfigLoaded = false;
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var deferredArgs = null;
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var defaultSeq = {file: 1, dir: 100};
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var dcfConfig = {
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key: 'dcf_key',
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seq: null,
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postFix: 'MZLLA',
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prefix: {video: 'VID_', image: 'IMG_'},
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ext: {video: window.VulpesVideoExtension || '3gp', image: 'jpg'}
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};
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exports.init = function() {
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debug('initializing');
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exports.checkFileCounter(function() {
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// We have a previous call to createDCFFilename that is waiting for
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// a response, fire it again
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if (deferredArgs) {
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var args = deferredArgs;
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exports.createDCFFilename(args.storage, args.type, args.callback);
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deferredArgs = null;
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}
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debug('initialized');
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});
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};
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exports.checkFileCounter = function(callback) {
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asyncStorage.getItem(dcfConfig.key, function(value) {
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dcfConfigLoaded = true;
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dcfConfig.seq = value ? value : defaultSeq;
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if (callback) {
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callback();
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}
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});
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};
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exports.createDCFFilename = function(storage, type, callback) {
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// We havent loaded the current counters from indexedDB yet, defer
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// the call
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if (!dcfConfigLoaded) {
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deferredArgs = {storage: storage, type: type, callback: callback};
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return;
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}
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var dir = 'DCIM/' + dcfConfig.seq.dir + dcfConfig.postFix + '/';
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var filename = dcfConfig.prefix[type] +
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format.padLeft(dcfConfig.seq.file, 4, '0') + '.' +
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dcfConfig.ext[type];
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var filepath = dir + filename;
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// A file with this name may have been written by the user or
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// our indexeddb sequence tracker was cleared, check we wont overwrite
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// anything
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var req = storage.get(filepath);
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// A file existed, we bump the directory then try to generate a
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// new filename
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req.onsuccess = function() {
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dcfConfig.seq.file = 1;
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dcfConfig.seq.dir += 1;
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asyncStorage.setItem(dcfConfig.key, dcfConfig.seq, function() {
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exports.createDCFFilename(storage, type, callback);
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});
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};
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// No file existed, we are good to go
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req.onerror = function() {
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if (dcfConfig.seq.file < 9999) {
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dcfConfig.seq.file += 1;
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} else {
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dcfConfig.seq.file = 1;
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dcfConfig.seq.dir += 1;
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}
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asyncStorage.setItem(dcfConfig.key, dcfConfig.seq, function() {
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callback(filepath, filename, dir);
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});
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};
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};
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});
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