The <mediaitem> element

The <mediaitem> element decsribes a media item. It may be empty, or contain text which is displayed on the screen.

<!ELEMENT mediaitem (#PCDATA)*>

<!ATTLIST mediaitem	mimetype CDATA #IMPLIED
					charset CDATA #IMPLIED
					src CDATA #IMPLIED
					alt CDATA #IMPLIED
					autoplay CDATA #IMPLIED
					modal CDATA #IMPLIED
					width CDATA #IMPLIED
					height CDATA #IMPLIED
					volume CDATA #IMPLIED
>

All attributes are optional.

mimetype specifies the type of prompt item. For image and audio prompts, this attribute provides a hint for displaying the prompt item - image items are drawn on the screen, audio is played via the system speakers or a headphone. Default MIME type is text/plain. charset Charset of external text prompt file. The encoding of prompt text embedded in teh recording script is inherited from the encoding of the entire recording script which is by default UTF-8. src is a file name or a URL from which a prompt item is retrieved.

alt contains the text that is displayed if the item cannot be retrieved from the external source.

autoplay, modal and volume apply only to time-dependent prompt items, i.e. audio clips. If autoplay is set to yes the clip plays automatically as soon as the item is displayed, otherwise the user has to start playback explicitly. With modal set to yes item playback cannot be interrupted, and volume determines the audio volume for playback.

width and height specify the width and height in pixels of the image or video to display.

It is up to the recording script author to set the mediaitem attribute values to meaningful values. SpeechRecorder accepts the combinations given in table 1.6.

Table 1: Meaningful <mediaitem> attribute combinations.

mimetype	src	alt	autoplay	modal	width	height	volume
text/plain	-	-	-	-	-	-	-
text/html	URL	-	-	-	-	-	-
text/rtf	URL	-	-	-	-	-	-
image/png	URL	+	-	-	+	+	-
image/jpeg	URL	+	-	-	+	+	-
image/svg+xml	URL	+	-	-	+	+	-
audio/x-wave	URL	+	+	+	-	-	+

An audio <mediaitem> element without contents displays a generic symbol for audio playback. An audio <mediaitem> element combined with text or image media displays the text or image contents and plays back the audio.