Software Requirements
Specification
Document Version 1.1
for
Mobile Image Gallery
Prepared by Nattakarn Phaphoom
ArchiSoft AB
December 14th, 2007
Software Requirements Specification for Mobile Image Gallery
Page ii
Table of Contents
Table of Contents .......................................................................................................................... ii
Revision History ........................................................................................................................... iii
1. Introduction ..............................................................................................................................1
1.1
1.2
1.3
1.4
Purpose ........................................................................................................................................... 1
Intended Audience .......................................................................................................................... 1
Product Scope ................................................................................................................................. 1
References ...................................................................................................................................... 1
2. Overall Description ..................................................................................................................2
2.1
2.2
2.3
2.4
2.5
2.6
2.7
Product Perspective ........................................................................................................................ 2
Product Functions ........................................................................................................................... 2
User Classes and Characteristics .................................................................................................... 3
Operating Environment .................................................................................................................. 3
Design and Implementation Constraints ......................................................................................... 3
User Documentation ....................................................................................................................... 3
Assumptions and Dependencies ..................................................................................................... 3
3. Specific Requirements .............................................................................................................4
3.1
3.2
3.3
3.4
3.5
3.6
External Interface Requirements .................................................................................................... 4
System Features .............................................................................................................................. 4
Performance Requirements............................................................................................................. 7
Security Requirements .................................................................................................................... 7
Software Quality Attributes ............................................................................................................ 7
Other Requirements ........................................................................................................................ 7
Software Requirements Specification for Mobile Image Gallery
Page iii
Revision History
Name
Date
Reason For Changes
Version
Nattakarn P.
Dec 15, 2007 Requirement elicitation from the kick-off meeting
1.0
Josef H.
Dec 21, 2007 Evaluation and minor changes.
1.1
Software Requirements Specification for Mobile Image Gallery
Page 1
1. Introduction
1.1 Purpose
The purpose of this document is to identify software requirement specification of the Mobile Image
Gallery (MIG) application. The application is a mobile application that’s provide services to browse,
upload, and download images from Google® Picasaweb, the online web album, server.
MIG is implemented using Google® Android platform which is a software stack for mobile devices
including operation system, middleware and other key application.
1.2 Intended Audience
This document is intended to the following groups of stakeholders.
1) The project manager uses this document for project planning and monitoring.
2) The application designers use this document to make the design of the application.
3) The programmers use this document to understand both application overview and detailed
software specification.
4) The testers use this document to develop test cases.
The document starts with the overall description of the Mobile Image Gallery application. It gives a
comprehensive description of product perspective and the features that this system provides. It gives
the user classes, characteristics and their authorization. It describes the possible constraints on the
project, and the underlying assumptions on which the requirements analysis is based. It enlists all
the specific requirements that contain a complete description of the application requirements, both
functional and non-functional.
1.3 Product Scope
The Mobile Image Gallery will allow everyone to browse albums and images from their mobile
device on-line and share moments with family, friend and colleague. A detailed project description
is available in the Mobile Image Gallery Vision and Scope Document. The section in that document
titled “Scope of Initial and Subsequent Releases” lists the features that are scheduled for full or
partial implementation in this release.
1.4 References
[1] For more detail regarding Google® Android application, please refers to its official website on
http://code.google.com/android/documentation.html
[2] Vision and Scope Document for Mobile Image Gallery Version 2.0
Software Requirements Specification for Mobile Image Gallery
Page 2
2. Overall Description
2.1 Product Perspective
The Mobile Image Gallery (MIG) is a mobile application that provides a connection from a mobile
device to Picasaweb server. It has features to browse, download, and upload images from Picasaweb
online album. The context diagram in Figure 1 illustrates the external entities and system interfaces
for MIG.
Figure 1: Context diagram of the Mobile Image Gallery
The system is expected to evolve over several releases especially to satisfy users of having an
excellent image viewer application inside their mobile devices.
2.2 Product Functions
Mobile Image Gallery application provides several features for mobile users:
 Automatic authentication to Google® Picasaweb server.
 Remote image or photo browsing of Picasaweb album.
 Download image or photo from Picasaweb album.
 Upload image or photo to Picasaweb album.
In order to perform these features effectively and promote modifiability to product design, the
application core is spitted into modules working in collaboration. These modules include
 Authentication module
 Remote browsing module
 Upload module
 Download module
 Album management module
Software Requirements Specification for Mobile Image Gallery
Page 3
2.3 User Classes and Characteristics
The user of Mobile Image Gallery is everyone who has mobile device, such as mobile phone, smart
phone or personal digital assistance (PDA), which runs under Android platform. Another
requirement is the user should have Google® Picasaweb personal account. Even-though this
requirement is not mandatory, the personal account will allow user to utilize the download and
upload image function from the application. Otherwise, the user can only browse any public album
from Picasaweb server.
2.4 Operating Environment
The application will be implemented, tested, and integrated on Android platform. The platform
provide an operating system, middle ware, core features, and API that allow access to perform
activity on mobile device system.
2.5 Design and Implementation Constraints
CO-001
CO-002
CO-003
The application design primarily depends on Google® Android architecture using its
API.
The application uses service interface that is provided by Picasaweb server for
requesting images.
All code shall use Sun® Java programming language.
2.6 User Documentation
Refer to application user manual document, MobileImageGalleryUserGuide.doc
2.7 Assumptions and Dependencies
The assumption of Mobile Image Gallery application is outlined below:
 The application does not provide service to register new users to Picasa server. User needs to
register them to Picasa. A username and password need to be provided to login to Picasa
through Mobile Image Gallery application.
 A web server that the application provides a connection to its service is limited to Picasa
web server. The services are limited to browsing, uploading and downloading.
Software Requirements Specification for Mobile Image Gallery
Page 4
3. Specific Requirements
3.1 External Interface Requirements
3.1.1 User Interfaces
Mobile image gallery application provides graphic user interface to perform image browsing,
downloading, and uploading. The application receives input via mobile keypad and output of
services is responded via device screen.
3.1.2 Hardware Interfaces
No applicable hardware interfaces.
3.1.3 Software Interfaces
The application uses services of mobile device’s operating system through API provided by
Android.
3.1.4 Communications Interfaces
The application communicates with Picasaweb server via HTTP.
3.2 System Features
3.2.1 Login/Automatic Login (FE-001)
3.2.1.1 Description and Priority
Login is one of the essential features of the application as it provides facility to
authenticate users to Picasa server. The application provides 2 types of login: manual and
automatic login. Manual login requires users to input a username and password registered to
Picasa server, automatic login retrieve user account saved in mobile device and provide
automatic login.
3.2.1.2 Stimulus/Response Sequences
Stimulus
Response
Stimulus
Response
A user request to login.
The application queries for a Picasa username and a password.
A user request to save login account profile.
The application saves login account profile in local memory and automatic
logins to Picasa server with this account.
3.2.1.3 Functional Requirements
FR-001
FR-002
FR-003
FR-004
FR-005
The application shall provide facility to login to Picasa server.
The application shall support user input by mobile device keypad.
The application shall provide facility to save Picasa login account profile.
If automatic login is set, the application shall retrieve saved login account
profile and automatically login to Picasa.
The application shall allow user to switch between manual and automatic
login
Software Requirements Specification for Mobile Image Gallery
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3.2.2 Remote Browse Image (FE-002.1 & FE-002.2)
3.2.2.1 Description and Priority
Browsing images of Picasaweb is one of the essential features of the application as it
provides connection between a mobile device and Picasaweb server and allows users to
browse images in Picasaweb through their snapshot.
3.2.2.2 Stimulus/Response Sequences
Stimulus
Response
A user requests to view images in his/her Picasaweb account.
1. The application displays all image albums in account.
2. Once a user selects a target album, the application display snapshot
of images in the album.
3.2.2.3 Functional Requirements
FR-006
FR-007
FR-008
FR-009
The application shall allow a user to request to browse images from Picasa
server
The application shall retrieve and display all album names created in
user’s account
The application shall provide facility to display images in user’s selected
album in Picasaweb account.
The application shall provide facility to select a previous or next image in
Picasaweb album to be displayed.
3.2.3 Download Remote Image (FE-003)
3.2.3.1 Description and Priority
The image-downloading feature is an optional feature of the application in the first
release. It provides facility to download images from Picasa server and save in mobile device
file system. An image can be selected and downloaded one by one.
3.2.3.2 Stimulus/Response Sequences
Stimulus
Response
A user requests to download images in his/her Picasaweb account.
The application downloads a selected image and saves to mobile device
file system.
3.2.3.3 Functional Requirements
FR-010
FR-011
FR-012
The application shall allow a user to request to download a particular
image in Picasaweb album.
The application shall provide facility to select an image to be downloaded.
The application shall save a downloaded image into a default directory of
mobile device file system.
Software Requirements Specification for Mobile Image Gallery
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3.2.4 Local Browse Image (FE-004)
3.2.4.1 Description and Priority
Display image gallery is one of the main features of the application, as it provide
facility user to browse and display images in a mobile device.
3.2.4.2 Stimulus/Response Sequences
Stimulus
Response
Stimulus
Response
A user request to open image files in a mobile device
The application provides interface to browse file location.
A user request to open an image folder in a mobile device.
The application provides interface to browse folder location.
3.2.4.3 Functional Requirements
FR-009
FR-010
FR-011
012
The application shall allow a user to request to open local image files or
folder.
The application shall provide facility to browse image or folder location in
mobile device’s file system.
The application shall provide facility to display images in user’s selected
folder.
The application shall provide facility to select a previous or next image to
be displayed.
3.2.5 Upload Local Images (FE-005)
3.2.5.1 Description and Priority
The image-uploading feature is an optional feature of the application in the first
release. It provides facility to upload images in mobile device file system to Picasa album.
Users need to be authenticated by Picasa server before uploading images to their Picasa
album.
3.2.5.2 Stimulus/Response Sequences
Stimulus
Response
A user requests to upload images in his/her Picasaweb album.
The application uploads an image from mobile device file system to
Picasaweb album one by one.
3.2.5.3 Functional Requirements
FR-020
FR-021
The application shall allow a user to request to upload a particular image
in a mobile device to Picasaweb album.
The application shall provide facility to select a target image to be
uploaded.
Software Requirements Specification for Mobile Image Gallery
Page 7
3.2.6 Account Management
3.2.6.1 Description and Priority
Account management is optional feature of the system as it is used in cooperate with
automatic login feature. It provides facility for users to change a username and password for
automatic login to Picasa. Note that the application allows users to save only one account for
automatic login.
3.2.6.2 Stimulus/Response Sequences
Stimulus
Response
A user request to modify a username and password used for automatic
login.
The application queries for a current login account.
3.2.6.3 Functional Requirements
FR-006
FR-007
FR-008
The application shall allow a user to request to modify Picasa login
account.
The application shall ask for current login account as a user asks to
modify.
The application shall provide facility to save newly modified username
and password.
3.3 Performance Requirements
Remote image browsing needs less than 5 seconds for each image to show up in the mobile screen.
3.4 Security Requirements
No applicable performance requirement.
3.5 Software Quality Attributes
3.5.1 Modifiability
3.5.1.1 Description and Priority
Modifiability is an essential quality attribute of the application, as the application will
be developed in iterative and incrementally approach.
The application features that will be enhanced in the next coming release including:
searching, album creation, download album, and upload from Picasa.
3.5.1.2 Non Functional Requirements
NFR-001
The application shall be designed to support enhancement features in the
next release.
3.6 Other Requirements
No applicable performance requirement.