Transcript Document
Chapter 28 – Multimedia: Audio, Video,
Speech Synthesis and Recognition
Outline
28.1
28.2
28.3
28.4
28.5
28.6
28.7
28.8
28.9
28.10
28.11
Introduction
Audio and Video
Adding Background Sounds with the bgsound Element
Adding Video with the img Element’s dynsrc Property
Adding Audio or Video with the embed Element
Using the Windows Media Player ActiveX Control
Microsoft Agent Control
RealOne Player Plug-in
Synchronized Multimedia Integration Language (SMIL)
Scalable Vector Graphics (SVG)
Web Resources
2004 Prentice Hall, Inc. All rights reserved.
Objectives
• In this lesson, you will learn:
– To enhance Web pages with sound and video.
– To use the bgsound element to add background sounds.
– To use the img element’s dynsrc property to incorporate
video into Web pages.
– To use the embed element to add sound or video.
– To use the Windows Media Player ActiveX control to play a
variety of media formats in Web pages.
– To use the Microsoft Agent ActiveX control to create
animated characters that speak to users and respond to
spoken commands from users.
– To embed RealOne Player™ to include streaming audio and
video in a Web page.
– To embed video and create graphics in a Web page using
SMIL and SVG.
2004 Prentice Hall, Inc. All rights reserved.
28.1 Introduction
• Multimedia
– Use of sound, images, graphics and video
– Add sound, video, and animated characters to Web-based
applications
– Streaming technologies
2004 Prentice Hall, Inc. All rights reserved.
28.2 Audio and Video
• Can be embedded in Web page
• Can be downloaded “on-demand”
• Encoding algorithm or codec
– Transforms raw audio or video into a format that Web
browsers can display
2004 Prentice Hall, Inc. All rights reserved.
28.3 Adding Background Sounds with the
bgsound Element
• bgsound element
– src property
• Specifies the URL of audio clip to be played
– loop property
• Specifies number of times audio clip will play
– balance property
• Specifies balance between left and right speakers
– volume property
• Determines volume of audio clip
2004 Prentice Hall, Inc. All rights reserved.
1
<?xml version = "1.0"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5
<!-- Fig. 28.1: BackgroundAudio.html
-->
6
<!-- Demonstrating the bgsound element -->
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BackgroundAudio
.html
(1 of 4)
<html xmlns = "http://www.w3.org/1999/xhtml">
<head><title>The bgsound Element</title>
<bgsound id = "audio" src =
11
"http://msdn.microsoft.com/downloads/sounds/jazzgos.mid"
12
loop = "1"></bgsound>
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14
<script type = "text/javascript">
15
<!--
16
function changeProperties()
17
{
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var loop = parseInt( audioForm.loopit.value );
19
if ( ( loop >= -1 ) ) {
audio.loop = ( isNaN( loop ) ? 1 : loop );
20
21
} else {
alert( "Please enter a integer\n" +
22
"greater than or equal to -1." );
23
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}
25
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26
var vol = parseInt( audioForm.vol.value );
27
if ( ( vol >= -10000 ) && ( vol <= 0 ) ) {
audio.volume = ( isNaN( vol ) ? 0 : vol );
28
} else {
29
alert( "Please enter an integer\n" +
30
"between -10000 and 0." );
31
}
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Outline
BackgroundAudio
.html
(2 of 4)
}
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function stopSound()
36
{
if ( audioForm.stopButton.value ==
37
38
"Stop Sound" ) {
39
audio.src = "";
40
audioForm.stopButton.value =
"Start Sound";
41
} else {
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audio.src =
43
"http://msdn.microsoft.com/downloads/sounds/jazzgos.mid";
44
audioForm.stopButton.value =
45
"Stop Sound";
46
}
47
48
}
49
// -->
50
</script>
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51
</head>
52
53
Outline
<body>
54
<h1>Background Music via the bgsound Element</h1>
55
<h2>Jazz Gospel</h2>
56
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This sound is from the free sound downloads at the
58
<a href =
59
"http://msdn.microsoft.com/downloads/default.asp">
60
Microsoft Developer Network</a> downloads site.
61
<hr />
62
Use the fields below to change the number of iterations
63
and the volume for the audio clip<br />
64
Press <strong>Stop</strong> to stop playing the sound.
65
<br />Press <strong>Refresh</strong> to begin playing
66
the sound again.
BackgroundAudio
.html
(3 of 4)
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<form name = "audioForm" action = "">
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<p>Loop [-1 = loop forever]</p>
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<input name = "loopit" type = "text" value = "1" />
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<br />Volume [-10000 (low) to 0 (high)]
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<input name = "vol" type = "text" value = "0" /><br />
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<input type = "button" value = "Set Properties"
74
onclick = "changeProperties()" />
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<input type = "button" value = "Stop Sound"
76
id = "stopButton" onClick = "stopSound()" />
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</form>
Outline
</body>
80 </html>
BackgroundAudio
.html
(4 of 4)
2004 Prentice Hall, Inc.
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28.4 Adding Video with the img Element’s
dynsrc Property
• img element
– Incorporates both images and videos
– src property
• Indicates source is image
– dynsrc property
• Indicates source is video clip
– start property
• Specifies when video should start playing
• Event fileopen
– Video should play as soon as it loads
• Event mouseover
– Video should play when user position mouse over video
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1
<?xml version = "1.0"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<!-- Fig. 28.2: Dynamicimg.html
-->
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<!-- Demonstrating the img element’s dynsrc property -->
Dynamicimg.html
(1 of 2)
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<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
10
<title>An Embedded Video Using the dynsrc Property</title>
11
<bgsound src =
12
"http://msdn.microsoft.com/downloads/sounds/carib.MID"
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loop = "-1"></bgsound>
14
</head>
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<body>
<h1>An Embedded Video Using the img element's
dynsrc Property</h1>
19
<h2>Car and Carribean Music</h2>
20
<table>
21
<tr><td><img dynsrc = "car_hi.wmv"
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start = "mouseover" width = "180"
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height = "135" loop = "-1"
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alt = "Car driving in circles" /></td>
25
<td>This page will play the audio clip and video
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26
in a loop.<br />The video will not begin
27
playing until you move the mouse over the
28
video.<br />Press the browser’s<strong>Stop</strong>
29
button to stop playing the sound and the video.</td>
30
</tr>
31
</table>
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Outline
Dynamicimg.html
(2 of 2)
</body>
33 </html>
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28.5 Adding Audio or Video with the embed
Element
• Element embed
– Embeds media clip into Web page
– Displays a graphical user interface (GUI)
– Supported by both Microsoft Internet Explorer and Netscape
2004 Prentice Hall, Inc. All rights reserved.
1
<?xml version = "1.0"?>
2
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<!-- Fig. 28.3: EmbeddedAudio.html
-->
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<!-- Background Audio via the embed Element -->
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<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
10
<title>Background Audio via the embed Element</title>
11
<style type = "text/css">
12
span
{ width: 600 }
13
.big
{ color: blue;
14
font-family: sans-serif;
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font-size: 50pt;
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font-weight: bold }
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EmbeddedAudio
.html
(1 of 3)
</style>
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<script type = "text/javascript">
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<!--
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var TimerID;
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var updown = true;
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var str = 1;
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25
function start()
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{
TimerID = window.setInterval( "wave()", 100 );
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Outline
}
29
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function wave()
31
{
EmbeddedAudio
.html
(2 of 3)
if ( str > 23 || str < 1 )
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updown = !updown;
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if ( updown )
36
str++;
else
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str--;
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wft.filters( "wave" ).phase = str * 20;
41
wft.filters( "wave" ).strength = str;
42
}
43
// -->
44
</script>
45
</head>
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<body onload = "start()">
48
<h1>Background Audio via the embed Element</h1>
49
<p>Click the text to stop the script.</p>
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51
<p class = "big" align = "center">
52
<span onclick = "window.clearInterval( TimerID )"
53
id = "wft" style = "filter:wave(
54
add = 0, freq = 3, light = 0, phase = 0, strength = 5)">
55
WAVE FILTER EFFECT</p></span>
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<p>These controls can be used to control the audio.</p>
58
<embed src = "humming.wav" loop = "true"></embed>
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Outline
EmbeddedAudio
.html
(3 of 3)
</body>
60 </html>
2004 Prentice Hall, Inc.
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28.5 Adding Audio or Video with the embed
Element
Play
Pause
Stop
Mute
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Volume
1
<?xml version = "1.0"?>
2
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<!-- Fig. 28.4: EmbeddedVideo.html -->
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<!-- Video via the embed Element
-->
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EmbeddedVideo
.html
(1 of 2)
<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<title>Video via the embed Element</title>
</head>
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<body>
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<h1>Displaying a Video using the embed Element</h1>
15
<h2>Car Driving in Circles</h2>
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<table>
<tr><td><embed src = "car_hi.wmv" loop = "false"
width = "240" height = "176">
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</embed></td>
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22
</tr></table>
<hr />
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23
This page plays the video once.<br />
24
Use the controls on the embedded video player to play the
25
video again.
26
Outline
</body>
27 </html>
EmbeddedVideo
.html
(2 of 2)
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28.6 Using the Windows Media Player
ActiveX Control
• object element
– Embed Windows Media Player and ActiveX controls
– Property id
–
–
–
–
–
–
–
• Specifies scripting name of element
width and height properties
• Specify width and height in pixels
property classid
• Specifies ActiveX control ID
Element param
• Specify parameter
Parameter FileName
• Specifies file containing media clip
AutoStart (boolean value)
ShowControls (boolean value)
Loop (boolean value)
2004 Prentice Hall, Inc. All rights reserved.
1
<?xml version = "1.0"?>
2
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<!-- Fig. 28.5: MediaPlayer.html
-->
6
<!-- Embedded Media Player Objects -->
MediaPlayer.html
(1 of 3)
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<html xmlns = "http://www.w3.org/1999/xhtml">
<head><title>Embedded Media Player Objects</title>
<script type = "text/javascript">
11
<!--
12
var videoPlaying = true;
13
14
function toggleVideo( b )
15
{
16
videoPlaying = !videoPlaying;
17
b.value = videoPlaying ?
"Pause Video" : "Play Video";
18
videoPlaying ?
19
VideoPlayer.Play() : VideoPlayer.Pause();
20
21
}
22
// -->
23
</script>
24
</head>
25
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26
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<body>
<h1>
Audio and video through embedded Media Player objects
29
</h1>
30
<hr />
31
<table>
MediaPlayer.html
(2 of 3)
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<tr><td valign = "top" align = "center">
33
<object id = "VideoPlayer" width = "200" height = "225"
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classid =
"CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95">
<param name = "FileName" value =
"car_hi.wmv" />
38
<param name = "AutoStart" value = "true" />
39
<param name = "ShowControls" value = "false" />
40
<param name = "Loop" value = "true" />
41
</object></td>
42
<td valign = "bottom" align = "center">
43
<p>Use the controls below to control the audio clip.</p>
44
<object id = "AudioPlayer"
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Outline
classid =
"CLSID:22d6f312-b0f6-11d0-94ab-0080c74c7e95">
<param name = "FileName" value =
"http://msdn.microsoft.com/downloads/sounds/carib.mid" />
49
<param name = "AutoStart" value = "true" />
50
<param name = "Loop" value = "true" />
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</object></td></tr>
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<tr><td valign = "top" align = "center">
53
<input name = "video" type = "button" value =
54
"Pause Video" onclick = "toggleVideo( this )" />
55
</td></tr>
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Outline
MediaPlayer.html
(3 of 3)
</table>
</body>
59 </html>
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28.7 Microsoft Agent Control
• Interactive animated characters
• Speaks
• Supports speech recognition
2004 Prentice Hall, Inc. All rights reserved.
1
<?xml version = "1.0"?>
2
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5
<!-- Fig. 28.6: tutorial.html -->
6
<!-- Microsoft Agent Control
-->
tutorial.html
(1 of 12)
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8
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<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<title>Speech Recognition</title>
11
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<!-- Microsoft Agent ActiveX Control -->
13
<object id = "agent" width = "0" height = "0"
14
classid = "CLSID:D45FD31B-5C6E-11D1-9EC1-00C04FD7081F"
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codebase = "#VERSION = 2, 0, 0, 0">
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</object>
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<!-- Lernout & Hauspie TruVoice text to speech engine -->
19
<object width = "0" height = "0"
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classid = "CLSID:B8F2846E-CE36-11D0-AC83-00C04FD97575"
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codebase = "#VERSION = 6, 0, 0, 0">
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</object>
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24
<!-- Microsoft Speech Recognition Engine -->
25
<object width = "0" height = "0"
26
classid = "CLSID:161FA781-A52C-11d0-8D7C-00A0C9034A7E"
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codebase = "#VERSION = 4, 0, 0, 0">
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</object>
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Outline
tutorial.html
(2 of 12)
<script type = "text/javascript">
<!--
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var currentImage = null;
34
var tips =
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[ "gpp", "seo", "perf", "port",
"gui", "ept", "cpe" ];
var tipNames = [
38
"Good Programming Practice",
39
"Software Engineering Observation",
40
"Performance Tip", "Portability Tip",
41
"Look-and-Feel Observation",
42
"Error-Prevention Tip",
43
"Common Programming Error" ];
44
var voiceTips = [
45
"Good [Programming Practice]",
46
"Software [Engineering Observation]",
47
"Performance [Tip]",
48
"Portability [Tip]",
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49
"Look-and-Feel [Observation]",
50
"Error-Prevention [Tip]",
51
"Common [Programming Error]" ];
52
Outline
var explanations = [
53
// Good Programming Practice text
54
"Good Programming Practices highlight " +
55
"techniques for writing programs that are " +
56
"clearer, more understandable, more " +
57
"debuggable, and more maintainable.",
tutorial.html
(3 of 12)
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// Software Engineering Observation text
60
"Software Engineering Observations highlight " +
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"architectural and design issues that affect " +
62
"the construction of complex software systems.",
63
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// Performance Tip text
65
"Performance Tips highlight opportunities for " +
66
"improving program performance.",
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// Portability Tip text
69
"Portability Tips help students write portable " +
70
"code that can execute in different Web browsers.",
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// Look-and-Feel Observation text
73
"Look-and-Feel Observations highlight graphical " +
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74
"user interface conventions. These observations " +
75
"help students design their own graphical user " +
76
"interfaces in conformance with industry " +
77
"standards.",
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// Error-Prevention Tip text
80
"Error-Prevention Tips tell people how to " +
81
"test and debug their programs. Many of the " +
82
"tips also describe aspects of creating Web " +
83
"pages and scripts that reduce the likelihood " +
84
"of 'bugs' and thus simplify the testing and " +
85
"debugging process.",
Outline
tutorial.html
(4 of 12)
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// Common Programming Error text
88
"Common Programming Errors focus the students' " +
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"attention on errors commonly made by beginning " +
90
"programmers. This helps students avoid making " +
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"the same errors. It also helps reduce the long " +
92
"lines outside instructors' offices during " +
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"office hours!" ];
94
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All rights reserved.
95
function loadAgent()
96
{
97
agent.Connected = true;
98
agent.Characters.Load( "Peedy",
99
"C:\\WINNT\\msagent\\chars\\Peedy.acs" );
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actor = agent.Characters.Character( "Peedy" );
101
actor.LanguageID = 0x0409; // sometimes needed
Outline
tutorial.html
(5 of 12)
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// get states from server
104
actor.Get( "state", "Showing" );
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actor.Get( "state", "Speaking" );
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actor.Get( "state", "Hiding" );
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// get Greet animation and do Peedy introduction
109
actor.Get( "animation", "Greet" );
110
actor.MoveTo( screenLeft, screenTop - 90);
111
actor.Show();
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actor.Play( "Greet" );
113
actor.Speak( "Hello. " +
114
"If you would like me to tell you about a " +
115
"programming tip, click its icon, or, press " +
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"the 'Scroll Lock' key, and speak the name " +
117
"of the tip, into your microphone." );
118
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119
// get other animations
120
actor.Get( "animation", "Idling" );
121
actor.Get( "animation", "MoveDown" );
122
actor.Get( "animation", "MoveUp" );
123
actor.Get( "animation", "MoveLeft" );
124
actor.Get( "animation", "MoveRight" );
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actor.Get( "animation", "GetAttention" );
126
actor.Get( "animation", "GetAttentionReturn" );
Outline
tutorial.html
(6 of 12)
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// set up voice commands
129
for ( var i = 0; i < tips.length; ++i )
actor.Commands.Add( tips[ i ],
130
tipNames[ i ], voiceTips[ i ], true, true );
131
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actor.Commands.Caption = "Programming Tips";
134
actor.Commands.Voice = "Programming Tips";
135
actor.Commands.Visible = true;
136
}
137
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function imageSelectTip( tip )
139
{
140
actor.Stop();
141
for ( i = 0; i < document.images.length; i++) {
142
document.images[ i ].style.background = "lemonchiffon";
143
currentImage = null;
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144
}
145
for ( var i = 0; i < document.images.length; ++i )
if ( document.images( i ) == tip )
146
tellMeAboutIt( i );
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Outline
tutorial.html
(7 of 12)
}
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function voiceSelectTip( cmd )
151
{
var found = false;
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for ( var i = 0; i < tips.length; ++i )
154
if ( cmd.Name == tips[ i ] ) {
155
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found = true;
157
break;
}
158
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if ( found )
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tellMeAboutIt( i );
161
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}
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function tellMeAboutIt( element )
165
{
166
currentImage = document.images( element );
167
currentImage.style.background = "red";
168
spanId = document.images( element ).id + "Span";
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169
spanObject = document.getElementById( spanId );
170
actor.MoveTo(
171
screenLeft + parseInt( spanObject.style.left ) - 18,
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screenTop + parseInt( spanObject.style.top )- 103 );
actor.Speak( explanations[ element ] );
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}
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// -->
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</script>
Outline
tutorial.html
(8 of 12)
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<script type = "text/javascript" for = "agent"
event = "Command( cmd )">
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<!--
181
voiceSelectTip( cmd );
182
// -->
183
</script>
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<script type = "text/javascript" for = "agent"
event = "BalloonShow">
186
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<!--
188
if ( currentImage != null ) {
189
currentImage.style.background = "lemonchiffon";
190
currentImage = null;
191
}
192
// -->
193
</script>
2004 Prentice Hall, Inc.
All rights reserved.
194
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<script type = "text/javascript" for = "agent"
196
event = "Click">
197
<!--
198
actor.Play( "GetAttention" );
199
actor.Speak( "Stop poking me with that pointer!" );
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actor.Play( "GetAttentionReturn" );
201
// -->
202
</script>
203
Outline
tutorial.html
(9 of 12)
</head>
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<body style = "background-color: lemonchiffon"
onload = "loadAgent()">
<table border = "0">
<tr>
<th colspan = "4">
210
<h1 style = "color: blue">
211
Deitel Programming Tips
</h1>
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</th>
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</tr>
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<tr>
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<td align = "center" valign = "top" width = "120">
<span id = "gppSpan" style = "position : absolute;
left : 30; top : 80; width : 130;">
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219
<img id = "gpp" src = "GPP_100h.gif"
220
alt = "Good Programming Practice" border =
221
"0" onclick = "imageSelectTip( this )" />
222
Good Programming Practices</span></td>
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<td align = "center" valign = "top" width = "120">
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<span id = "seoSpan" style = "position : absolute;
<img id = "seo" src = "SEO_100h.gif"
alt = "Software Engineering Observation"
228
border = "0"
229
onclick = "imageSelectTip( this )" />
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Software Engineering Observations</span></td>
<td align = "center" valign = "top" width = "120">
<span id = "perfSpan" style = "position : absolute;
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left : 330; top : 80; width : 130;">
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<img id = "perf" src = "PERF_100h.gif"
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alt = "Performance Tip" border = "0"
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onclick = "imageSelectTip( this )" />
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tutorial.html
(10 of 12)
left : 180; top : 80; width : 130;">
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Outline
Performance Tips</span></td>
<td align = "center" valign = "top" width = "120">
<span id = "portSpan" style = "position : absolute;
240
left : 480; top : 80; width : 130;">
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<img id = "port" src = "PORT_100h.gif"
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alt = "Portability Tip" border = "0"
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onclick = "imageSelectTip( this )" />
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Portability Tips</span></td>
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</tr>
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<tr>
247
Outline
<td align = "center" valign = "top" width = "120">
<span id = "guiSpan" style = "position : absolute;
248
left : 30; top : 260; width : 130;">
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<img id = "gui" src = "GUI_100h.gif"
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alt = "Look-and-Feel Observation" border =
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"0" onclick = "imageSelectTip( this )" />
253
Look-and-Feel Observations</span></td>
254
<td align = "center" valign = "top" width = "120">
<span id = "eptSpan" style = "position : absolute;
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left : 180; top : 260; width : 130;">
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<img id = "ept" src = "EPT_100h.gif"
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alt = "Error-Prevention Tip" border =
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"0" onclick = "imageSelectTip( this )" />
Error-Prevention Tips</span></td>
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<td align = "center" valign = "top" width = "12">
<span id = "cpeSpan" style = "position : absolute;
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left : 330; top : 260; width : 130;">
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<img id = "cpe" src = "CPE_100h.gif"
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alt = "Common Programming Error" border =
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"0" onclick = "imageSelectTip( this )" />
Common Programming Errors</span></td>
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tutorial.html
(11 of 12)
</tr>
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269
</table>
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<img src = "agent_button.gif" style = "position: absolute;
bottom: 10px; right: 10px" />
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Outline
</body>
273 </html>
tutorial.html
(12 of 12)
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28.7 Microsoft Agent Control
Fig. 28.7
Peedy finishing introduction.
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28.7 Microsoft Agent Control
Fig. 28.8
Peedy ready to receive voice commands.
2004 Prentice Hall, Inc. All rights reserved.
28.7 Microsoft Agent Control
Fig. 28.9
Peedy receiving voice command.
2004 Prentice Hall, Inc. All rights reserved.
28.7 Microsoft Agent Control
Fig. 28.10
Peedy discussing Good Programming Practices.
2004 Prentice Hall, Inc. All rights reserved.
28.7 Microsoft Agent Control
Event
BalloonHide
Description
Called when the text balloon for a character is
hidden.
BalloonShow
Called when the text balloon for a character is
shown.
Hide
Called when a character is hidden.
Move
Called when a character is moved on the screen.
Show
Called when a character is displayed on the
screen.
Size
Called when a character’s size is changed.
Fig. 28.11
Other events for the Microsoft Agent control.
2004 Prentice Hall, Inc. All rights reserved.
28.7 Microsoft Agent Control
Property or method
Properties
Height
Left
Name
Speed
Top
Width
Methods
Activate
GestureAt
Interrupt
StopAll
Fig. 28.12
Description
The height of the character in pixels.
The left edge of the character in pixels from the left of the
screen.
The default name for the character.
The speed of the character’s speech.
The top edge of the character in pixels from the top of the screen.
The width of the character in pixels.
Sets the currently active character when multiple characters
appear on the screen.
Specifies that the character should gesture toward a location on
the screen that is specified in pixel coordinates from the upperleft corner of the screen.
Interrupts the current animation. The next animation in the queue
of animations for this character is then displayed.
Stops all animations of a specified type for the character.
Other properties and methods for the Character object.
2004 Prentice Hall, Inc. All rights reserved.
28.7 Microsoft Agent Control
Tag
\Chr = string\
Description
Specifies the tone of the voice. Possible values for string are
Normal (the default) for a normal tone of voice, Monotone for
a monotone voice or Whisper for a whispered voice.
\Emp\
Emphasizes the next spoken word.
\Lst\
Repeats the last statement spoken by the character. This tag must
be the only content of the string in the Speak method call.
Pauses speech for number milliseconds.
\Pau = number\
\Pit = number\
Changes the pitch of the character’s voice. This value must be
within the range 50 to 400 hertz for the Microsoft Agent speech
engine.
\Spd = number\
Changes the speech speed to a value in the range 50 to 250.
\Vol = number\
Changes the volume to a value in the range 0 (silent) to 65,535
(maximum volume).
Fig. 28.13
Speech output tags.
2004 Prentice Hall, Inc. All rights reserved.
28.8 RealOne Player Plug-in
• Element embed
– Embed RealOne Player plug-ins for video and audio
– Attribute type
• Specifies MIME type of embedded file
– Attributes width and height
• Specify dimensions of space the control occupies
– Attribute autostart
• Determines whether media start playing when page loads
– Attribute controls
• Specifies which controls users can access
– Attribute src
• Set to location of streaming media
2004 Prentice Hall, Inc. All rights reserved.
1
<?xml version = "1.0"?>
2
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5
<!-- Fig. 28.14: StreamingMedia.html
-->
6
<!-- Embedding RealOne Player into an XHTML page -->
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StreamingMedia
.html
(1 of 3)
<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<title>Live Media!</title>
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<script type = "text/javascript">
13
<!--
14
var locations =
[ "http://www.noaanews.noaa.gov/video/naturalworld.ram",
15
"http://www.nasa.gov/ram/35037main_.ram"]
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function change( loc )
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{
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videoControl.SetSource( locations[ loc ] );
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videoControl.DoPlayPause();
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}
23
// -->
24
</script>
25
</head>
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All rights reserved.
26
27
<body>
Outline
28
29
<p>Pick from my favorite video streams:
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<select id = "streamSelect" onchange =
32
"change( this.value )">
33
<option value = "">Select a station</option>
34
<option value = "0">NOAA</option>
35
<option value = "1">NASA</option>
36
StreamingMedia
.html
(2 of 3)
</select></p>
37
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<br />
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<embed id = "videoControl" src = ""
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type = "audio/x-pn-realaudio-plugin" width = "275"
41
height = "200" controls = "ImageWindow"
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console = "streamingAudio"
43
autostart = "false" />
44
<br />
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<embed id = "audioControl" src = ""
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type = "audio/x-pn-realaudio-plugin" width = "275"
47
height = "40" controls = "ControlPanel"
48
console = "streamingAudio"
49
autostart = "false" />
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All rights reserved.
50
51
</body>
52 </html>
Outline
StreamingMedia
.html
(3 of 3)
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All rights reserved.
28.9 Synchronized Multimedia Integration
Language (SMIL)
• Coordinate wide range of multimedia elements
• XML-based description language
• Organize text, audio, video to occur
simultaneously or sequentially
• Provide time reference for all instances of text and
media
• Specifies source and presentation of multimedia
2004 Prentice Hall, Inc. All rights reserved.
1
<smil xmlns="http://www.w3.org/2000/SMIL20/CR/Language">
Outline
2
3
<!-- Fig. 20.15 : exampleSMIL.smil -->
4
<!-- Example SMIL Document
-->
exampleSMIL.smil
(1 of 3)
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<head>
<layout>
<root-layout height = "300" width = "280"
background-color = "#bbbbee" title = "Example" />
10
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<region id = "image1" width = "177" height = "230"
top = "35" left = "50" background-color = "#bbbbee" />
</layout>
14
15
<transition id = "wipeForward" dur = "2s" type = "barWipe" />
16
<transition id = "wipeBackward" dur = "2s" type = "barWipe"
17
subtype = "topToBottom" />
18
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<transition id = "fadeIn" dur = "2s" type = "fade"
subtype = "fadeFromColor" fadeColor = "#bbbbee" />
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<transition id = "fadeOut" dur = "2s" type = "fade"
23
subtype = "fadeToColor" fadeColor = "#bbbbee" />
24
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25
26
<transition id = "crossFade" type = "fade" subtype = "crossfade"
dur = "2s" />
Outline
27
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</head>
29
<body>
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exampleSMIL.smil
(2 of 3)
<seq>
<par>
<img src = "book1.jpg" region = "image1"
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transIn = "wipeForward" transOut = "wipeForward"
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alt = "book1" dur = "6s" fill = "transition"
35
fit = "fill" />
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<audio src = "bounce.au" dur = ".5s" />
37
</par>
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<par>
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<img src = "book2.jpg" region = "image1" transIn = "fadeIn"
40
transOut = "fadeOut" alt = "book2" dur = "6s"
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fit = "fill" fill = "transition" />
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<audio src = "bounce.au" dur = ".5s" />
43
</par>
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<par>
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<img src = "book3.jpg" region = "image1"
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transIn = "wipeBackward" transOut = "fadeOut"
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alt = "book3" dur = "6s" fit = "fill"
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fill = "transition" />
49
<audio src = "bounce.au" dur = ".5s" />
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All rights reserved.
50
</par>
51
<par>
<img src = "book4.jpg" region = "image1" transIn = "crossFade"
52
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transOut = "fadeOut" alt = "book4" dur = "6s"
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fit = "fill" fill = "transition" />
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<audio src = "bounce.au" dur = ".5s" />
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</par>
57
<par>
exampleSMIL.smil
(3 of 3)
<img src = "book5.jpg" region = "image1"
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transIn = "wipeForward" transOut = "wipeBackward"
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alt = "book5" dur = "6s" fit = "fill"
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fill = "transition" />
<audio src = "bounce.au" dur = ".5s" />
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</par>
64
<par>
<img src = "book6.jpg" region = "image1"
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transIn = "crossFade" alt = "book6" dur = "6s"
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fit = "fill" fill = "transition" />
<audio src = "bounce.au" dur = ".5s" />
68
</par>
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70
Outline
</seq>
71
72
</body>
73 </smil>
2004 Prentice Hall, Inc.
All rights reserved.
1
<?xml version = "1.0"?>
2
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
3
Outline
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5
<!-- Fig. 28.16: SMILexample.html
-->
6
<!-- embedding SMIL with RealOne Player -->
SMILexample.html
(1 of 1)
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<html xmlns = "http://www.w3.org/1999/xhtml">
<head>
<title>Embedding SMIL with RealOne Player</title>
11
</head>
12
<body>
13
<div style = "text-align: center">
14
<embed src = "exampleSMIL.smil"
15
controls = "ImageWindow"
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type = "audio/x-pn-realaudio-plugin"
17
width = "280" height = "300" autostart = "true">
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</embed>
19
</div>
20
</body>
21 </html>
2004 Prentice Hall, Inc.
All rights reserved.
2004 Prentice Hall, Inc. All rights reserved.
2004 Prentice Hall, Inc. All rights reserved.
28.10 Scalable Vector Graphics (SVG)
• Describes vector graphic data for JPEG, GIF, and
PNG formats
• Vector graphics
– Produced by mathematical equations
• XML vocabulary
2004 Prentice Hall, Inc. All rights reserved.
1
<?xml version = "1.0"?>
Outline
2
3
<!-- Fig. 28.17 : shapes.svg -->
4
<!-- Simple example of SVG
-->
5
6
<svg viewBox = "0 0 300 300" width = "300" height = "300">
shapes.svg
(1 of 2)
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<!-- Generate a background -->
9
<g>
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11
<path style = "fill: #eebb99" d = "M0,0 h300 v300 h-300 z"/>
</g>
12
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14
<!-- Circle shape and attributes -->
15
<g>
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<circle style = "fill:green;" cx = "150" cy = "150" r = "50">
<animate attributeName = "opacity" attributeType = "CSS"
from = "0" to = "1" dur = "6s"
/>
</circle>
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<!-- Rectangle shape and attributes -->
23
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25
<rect style = "fill: blue; stroke: white"
x = "50" y = "0" width = "100" height = "100">
2004 Prentice Hall, Inc.
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<animate attributeName = "y" begin = "mouseover" dur = "2s"
26
values = "0; -50; 0; 20; 0; -10; 0; 5; 0; -3; 0; 1; 0" />
27
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</rect>
Outline
29
30
<!-- Text value and attributes -->
31
32
<text style = "fill: red; font-size: 24pt"
33
x = "25" y = "250"> Welcome to SVG!
34
<animateColor attributeName = "fill"
35
attributeType = "CSS" values = "red;blue;yellow;green;red"
36
dur = "10s" repeatCount = "indefinite"/>
</text>
37
38
shapes.svg
(2 of 2)
</g>
39 </svg>
2004 Prentice Hall, Inc.
All rights reserved.
2004 Prentice Hall, Inc. All rights reserved.
1
<?xml version = "1.0"?>
Outline
2
3
<!-- Fig. 28.18: planet.svg
-->
4
<!-- Planetary motion with SVG -->
5
6
7
8
<svg viewBox = "-500 -500 1000 1000">
<g id = "background">
<path style = "fill: black"
d = "M -2000,-2000 H 2000 V 2000 H -2000 Z" />
9
10
planet.svg
(1 of 2)
</g>
11
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<circle id = "sun" style = "fill: yellow"
cx = "0" cy = "0" r = "100" />
14
15
16
<g>
<animateTransform attributeName = "transform"
17
type = "rotate" dur = "80s" from = "0" to = "360"
18
repeatCount = "indefinite" />
19
20
21
<circle id = "earth" style = "fill: blue"
cx = "400" cy = "0" r = "40" />
22
23
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<g transform = "translate( 400 0 )">
<circle id = "moon" style = "fill: white"
cx = "70" cy = "0" r = "10">
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<animateTransform attributeName = "transform"
26
27
type = "rotate" dur = "20s" from = "360"
28
to = "0" repeatCount = "indefinite" />
</circle>
29
</g>
30
31
Outline
</g>
planet.svg
(2 of 2)
32 </svg>
2004 Prentice Hall, Inc.
All rights reserved.
28.11 Web Resources
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
www.microsoft.com/windows/windowsmedia
www.streamingmedia.com
www.microsoft.com/msagent/downloads/default.asp
msdn.microsoft.com/downloads/default.asp
www.real.com
www.adobe.com/svg
www.service.real.com/help/library/guides/extend/embed.htm
www.nasa.gov/gallery/index.html
www.speech.cs.cmu.edu/comp.speech/SpeechLinks.html
www.mp3.com
www.mpeg.org
www.winamp.com
www.shoutcast.com
www.windowsmedia.com
www.research.att.com/~rws/Sable.v1_0.htm
www.w3.org/AudioVideo
smw.internet.com/smil/smilhome.html
2004 Prentice Hall, Inc. All rights reserved.