SUBMITTED BY:

Rashmi Gupta (1301013027)Silviya Keshari (1301013039)

FINAL YEAR PROJECT 2016-17

Multi-Media Player (Jazz Player)

Table of ContentSerial No.

Topic

1. Introduction2. Android Framework & Runtime3.. Environment Setup4. Components of Android Application5. Project Media Player6. Existing system7. Proposed system8. Modules & Structure9. Working of the System10. Format compatibility11. State Diagram12. Advantages13. Conclusion & Future Scope

IntroductionWhat is Android?• Open source and Linux-based OS for mobile devices such as

smartphones and tablet computers. • Developed by the Open Handset Alliance

Why Android?• Offers a unified approach to application development• Variety of Applications• Reliability & Reusability• Multitasking• Modifiability• Portability

Android Framework

Android Runtime• Dalvik Virtual Machine is a key component of Android Runtime

which is a kind of Java Virtual Machine specially designed and optimized for Android.

• Each Android application runs in its own process, with its own instance of the Dalvik VM..

• Dalvik has been written such that a device can run multiple DVMs efficiently.

Environment Setup List of software's that we need for Android application programming. • Java JDK5 or JDK6 • Android SDK • Android Studio• Android Development Tools (ADT)

How to proceed to set required environment?• Step 1 - Setup Java Development Kit (JDK) • Step 2 - Setup Android SDK• Step 3 - Setup Android Studio• Step 4 - Setup Android Development Tools (ADT) Plugin• Step 5 - Create Android Virtual Device

Components of Android ApplicationsComponents Description

Activities They dictate the UI and handle the user interaction to the smartphone screen

Services They handle background processing associated with an application.

Content Providers They handle data and database management issues.

Broadcast Receivers They handle communication between Android OS and applications.

Multi-Media Player• Mobile Phone is not just a device used for communication but a

multimedia platform that provides the ability to play the media.

• Application will be written using Android SDK in Java and should run on all Android OS handsets.

• It must support various formats like-• mp3,• mp4,wav, flv• avi, aac

EXISTING SYSTEM • Playing the audio and video isn’t a feel good experience due to the

limitations.• Provide support for only some media format and recently facilities

for providing the subtitles is included in the existing system. • It does not support all media format while audio effects are not

available to some of the best current media players. • No Background support• Also current media players have limitations in subtitle support and

dual audio. • Limitations related to video quality compatibility as well as format

support. • High quality HD videos face some problem during video streaming.• Performance of the media player is enhanced in this case by using

software encoding facility.

PROPOSED SYSTEM After considering all the above problems, we have decided to implement desktop like media player by using software development and media framework approach. A. User Interface Proposed system will provide improved user

interface along with single station for both audio and videoB. Multiple Format Support Proposed system will support multiple

formats like 3gp, mp4, avi, flv.C. Subtitle Support: Few media players do not support manual

subtitle upload. So proposed system will provide multiple format subtitle support. It will also provide manual upload of subtitle on media player

D. Sound Effects: The proposed system eliminate above problem by using audio effects like equalizer, FX booster which will give more entertaining music experience

E. Dual Audio Support: Dual audio facility allow user to select playback audio language during video streaming. This feature eliminate the language understanding barrier.

F. Run In Background: The most unique feature which we will be going to provide is the video running in background which makes the video playable in the widget. This feature allows user to do important works like email checking or sending message or data without minimizing or closing our video.

Features of the App• The Android platform provides resources for handling media

playback, which your apps can use to create an interface between the user and their music files.

• The app will present a list of songs on the user device, so that the user can select songs to play.

• The app will also present controls for interacting with playback and will continue playing when the user moves away from the app, with a notification displayed while playback elapses.

Modules and Structure• This system adopts the modularized program design.

• System function is divided into modules:

1. UI function module design of mobile terminal:• The index screen • Play screen• Music adding page• File management page

2. Backstage function module design of mobile terminal:• The specific function• Music file data storage

ModulesPlaylist design:• The List View shows one music pictures and one song’s name in

every row. • We expand the adapter through algorithm, in which a picture and a

song’s name can be shown in the first line.The design and realization of play menus:• Includes six functions- play, content, add, delete, delete all & settingData storage: Android provides the following ways for data storage: • Preference (configuration)• File (documents)• SQLite data• Network

Play mode:• Play mode Use RadioGroup which has the function of the single item

choice.• Multiple RadioButton items can only select one; play mode of the

player includes single cycle, random play, play in order etc. • When songs played complete, method OnCompletionListener will be

triggeredThe extension card access functions of mobile phones: The application implements the function of the file browser.

Working of the System• The ContentResolver class to retrieve tracks on the device • The MediaPlayer class to play audio and the MediaController class

to control playback. • A Service instance to play audio when the user is not directly

interacting with the app. • At first player may be idle or there may be previous files which is

either running or stopped or completed. • When we click on the media file, then previously loaded file is

retrieved to its starting point and then new file is initialized on player. • After initialization of the file it is ready for preparing• Then file will play on media player only if format is compatible with

player. • Otherwise corresponding codec are loaded and file get played

Format Compatibility

Method & description• isPlaying()This method just returns true/false indicating the song is playing or not

• seekTo(position)This method takes an integer, and move song to that particular second

• getCurrentDuration()This method returns the current position of song in milliseconds

• getDuration()This method returns the total time duration of song in milliseconds

• reset()This method resets the media player

• release()This method releases any resource attached with Media Player object

• setVolume(float leftVolume, float rightVolume)This method sets the up down volume for this player

• setDataSource(FileDescriptor fd)This method sets the data source of audio/video file

• selectTrack(int index)This method takes an integer, and select the track from the list on that particular index

State DiagramPlayback control of audio/video files and streams is managed as a state machine.

The following diagram shows the life cycle and the states of a MediaPlayer object: • Ovals represents the states a MediaPlayer object may reside in. • Arcs represent the playback control operations that drive the object

state transition. • Arcs with a single arrow head- Synchronous method calls Arcs with

double arrow head- Asynchronous method calls

AdvantagesThe proposed MediaPlayer offers just the right mix of ease of use and powerful features.• An uncluttered viewer supports• Various swipe gestures• Pinch to zoom• App features both software and hardware decoding for a broad

variety of file formats. • Subtitle controls• Improved GUI. • No need of converter • Multiple format support. • High quality video streaming support • Sound effects

Conclusion and Future Scope• The media player consider about improving functionality in terms of

user interface, format support through the inclusion of codec.

• Improvement in user experience through video running in background, dual-audio support, subtitle support for all format.

• Single application for audio as well as videos.

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