Multimedia -Quick Start

This document provides entry points for readers seeking to understand the -technology of the Symbian platform Multimedia module and its documentation.

Symbian platform phones are typically loaded with multimedia gadgets such -as cameras (for recording still and video images), radios, video and music -players. The Multimedia module provides a means of accessing and controlling -the hardware that drives these features.

Getting started -with Multimedia

Multimedia functionality is summarized below:

Playing -and Recording audio and video

You can write applications to play -and record audio and video:

Audio

Play recorded audio -files from a device using Audio -Client.
Make audio recordings -from the device using Audio -Client.
Record streaming audio -using Streaming Audio -Recorder.
Play streaming audio -using Streaming Audio -Player.

Video

Play recorded video -files from a device using the Video -Client video player.
Make video recordings -files from a device using the Video -Client video recorder.
Display subtitles artwork -on a video window using the Video -Subtitle CRP component.
Create and destroy a -surface for video rendering using the Video -Renderer component.

Accessing multimedia hardware

Devices may include -the following hardware components:

Camera - for capturing -still and video images using Camera -Framework.
Mobile TV receiver - for playing -or recording DVB-H mobile TV broadcasts using Mobile -TV DVBH Receiver HAI Component.
Multimedia Device Framework (MDF) -- for loading, controlling, connecting and unloading audio, video and imaging -components using the OpenMAX -IL Collection.
Speech recognition - -for making requests from the MMF (Multimedia Framework) to the DevASR (DevSound -Automatic Speech Recognition), which are transported using the Speech -Recognition Controller component.
Hardware abstraction layer - for video playing and recording using -the Video HAI Component

Manipulating images

Many of the most common image -manipulation techniques are provided:

Image encoding and decoding -is provided using Image -Conversion.
Reading and editing -image metadata using the Exchangeable -image file format (Exif).
Image transformations -such as rotations, masking, mirroring flipping, stretching, resizing, and -many other common image transformation techniques are provided using Bitmap Transformation and Image Transformation.
Processing an image -on a mobile device is provided using Image -Processor Library.

Technologies

The following is a list of technologies -used by Multimedia to enable various features:

DVB-H- to receive Mobile -TV signals.
Exif - to include -metadata for an image, such as, a time/date stamp, a description, GPS location -data, an embedded thumbnail.
Codecs - to -deal with (playing, recording, streaming) audio and video data in one of the -many supported formats through the Symbian.

Documentation and examples

The following sections -list tutorials and example applications that can be used to play and record -audio and video data, perform image processing and manipulation, and access -any camera and radio tuner hardware present on a mobile phone.

Tutorials

Audio Client -Tutorials
Audio Input -Stream Tutorials
Audio Output -Stream Tutorials
Video Client -Library Tutorials
Video Subtitle -CRP Tutorial
Camera Library -Tutorials
DVBH -Reciever Library Tutorials
Image Conversion -Library Tutorials
Initializing -and Processing an Image Tutorial

Example applications

Multimedia Example -Code

+ + + + + +Multimedia +Quick Start +

This document provides entry points for readers seeking to understand the +technology of the Symbian platform Multimedia module and its documentation.

Symbian platform phones are typically loaded with multimedia gadgets such +as cameras (for recording still and video images), radios, video and music +players. The Multimedia module provides a means of accessing and controlling +the hardware that drives these features.

Getting started +with Multimedia

Multimedia functionality is summarized below:

Playing +and Recording audio and video

You can write applications to play +and record audio and video:

Audio

Play recorded audio +files from a device using Audio +Client.
Make audio recordings +from the device using Audio +Client.
Record streaming audio +using Streaming Audio +Recorder.
Play streaming audio +using Streaming Audio +Player.

Video

Play recorded video +files from a device using the Video +Client video player.
Make video recordings +files from a device using the Video +Client video recorder.
Display subtitles artwork +on a video window using the Video +Subtitle CRP component.
Create and destroy a +surface for video rendering using the Video +Renderer component.

Accessing multimedia hardware

Devices may include +the following hardware components:

Camera - for capturing +still and video images using Camera +Framework.
Mobile TV receiver - for playing +or recording DVB-H mobile TV broadcasts using Mobile +TV DVBH Receiver HAI Component.
Multimedia Device Framework (MDF) +- for loading, controlling, connecting and unloading audio, video and imaging +components using the OpenMAX +IL Collection.
Speech recognition - +for making requests from the MMF (Multimedia Framework) to the DevASR (DevSound +Automatic Speech Recognition), which are transported using the Speech +Recognition Controller component.
Hardware abstraction layer - for video playing and recording using +the Video HAI Component

Manipulating images

Many of the most common image +manipulation techniques are provided:

Image encoding and decoding +is provided using Image +Conversion.
Reading and editing +image metadata using the Exchangeable +image file format (Exif).
Image transformations +such as rotations, masking, mirroring flipping, stretching, resizing, and +many other common image transformation techniques are provided using Bitmap Transformation and Image Transformation.
Processing an image +on a mobile device is provided using Image +Processor Library.

Technologies

The following is a list of technologies +used by Multimedia to enable various features:

DVB-H- to receive Mobile +TV signals.
Exif - to include +metadata for an image, such as, a time/date stamp, a description, GPS location +data, an embedded thumbnail.
Codecs - to +deal with (playing, recording, streaming) audio and video data in one of the +many supported formats through the Symbian.

Documentation and examples

The following sections +list tutorials and example applications that can be used to play and record +audio and video data, perform image processing and manipulation, and access +any camera and radio tuner hardware present on a mobile phone.

Tutorials

Audio Client +Tutorials
Audio Input +Stream Tutorials
Audio Output +Stream Tutorials
Video Client +Library Tutorials
Video Subtitle +CRP Tutorial
Camera Library +Tutorials
DVBH +Reciever Library Tutorials
Image Conversion +Library Tutorials
Initializing +and Processing an Image Tutorial

Example applications

Multimedia Example +Code

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