Prefetch - Revision history

SMIL T.A. at 09:05, 9 June 2017

2017-06-09T09:05:24Z

SMIL T.A. at 06:49, 12 June 2014

2014-06-12T06:49:19Z

SMIL T.A. at 08:18, 24 August 2011

2011-08-24T08:18:28Z

SMIL T.A. at 08:17, 24 August 2011

2011-08-24T08:17:53Z

SMIL T.A.: /* Prefetching a file seamlessly */

2011-08-23T04:53:17Z

‎Prefetching a file seamlessly

SMIL T.A.: /* Prefetching a file seamlessly */

2011-08-23T04:51:13Z

‎Prefetching a file seamlessly

SMIL T.A. at 10:52, 19 October 2010

2010-10-19T10:52:11Z

SMIL T.A.: Corrected first seq which cannot have end condition with repeatCount at the same time

2010-10-19T10:49:43Z

Corrected first seq which cannot have end condition with repeatCount at the same time

SMIL T.A.: Enriched sample code

2009-12-22T05:12:27Z

Enriched sample code

SMIL T.A. at 07:43, 29 September 2009

2009-09-29T07:43:11Z

@@ Line 85: / Line 85: @@
 Applicable device :
 <br>
-IAdea XMP-3250 series player ( firmware 3.4 or higher ) and XDS-1950/2450 signboard
+IAdea XMP-3250 series player and XDS-1950/2450 signboard
 <br>
-IAdea XMP-2200 series player ( firmware 4.8 or higher ) and XDS-1060 series signboar
+IAdea XMP-2200 series player and XDS-1060 series signboard

← Older revision		Revision as of 06:49, 12 June 2014
Line 61:		Line 61:

	The third sequence starts by the same event that ends the first sequence, and plays media files downloaded by the prefetch sequence.		The third sequence starts by the same event that ends the first sequence, and plays media files downloaded by the prefetch sequence.
		+
		+	== MD5 Check ==
		+	SMIL player can do MD5 check while prefetch media.
		+
		+	While MD5 mismatch :
		+
		+
		+	(1) media will be abandoned
		+
		+	(2) player will report checksum error in [[Player_events]]
		+
		+
		+	<source lang="smil">
		+
		+	<prefetch src="foo.wmv">
		+	<param name="md5" value="F94C9F475265682756530E670F27FC37" />
		+	</prefetch>
		+
		+	</source>
		+
		+
		+
		+	Applicable device :
		+	<br>
		+	IAdea XMP-3250 series player ( firmware 3.4 or higher ) and XDS-1950/2450 signboard
		+	<br>
		+	IAdea XMP-2200 series player ( firmware 4.8 or higher ) and XDS-1060 series signboar
		+

	== Related ==		== Related ==

@@ Line 56: / Line 56: @@
 <div style="color:red">
 <b>
-Please note the prefetch sequence should not be placed in a indefinite loop without proper configuration, if content update is necessary, follow the suggestion in best practice [[Fixed_Playlist,_Dynamic_Content]].
+Please note the prefetch sequence should not be placed in a indefinite loop without proper configuration, if content update is necessary, follow the suggestion in best practice </b>
-</b>
+</div> [[Fixed_Playlist,_Dynamic_Content]].
 </div>
 The third sequence starts by the same event that ends the first sequence, and plays media files downloaded by the prefetch sequence.

@@ Line 54: / Line 54: @@
 The second sequence contains all prefetch instructions having the last item being the empty sequence named "<tt>__prefetchEnd</tt>", whose <tt>endEvent</tt> stops the first sequence (ending the display of waiting messages).
 Please note the prefetch sequence should not be placed in a indefinite loop without proper configuration, if content update is necessary, follow the suggestion in best practice [[Fixed_Playlist,_Dynamic_Content]].
+</b>
 The third sequence starts by the same event that ends the first sequence, and plays media files downloaded by the prefetch sequence.

← Older revision		Revision as of 04:53, 23 August 2011
Line 54:		Line 54:

	The second sequence contains all prefetch instructions having the last item being the empty sequence named "<tt>__prefetchEnd</tt>", whose <tt>endEvent</tt> stops the first sequence (ending the display of waiting messages).		The second sequence contains all prefetch instructions having the last item being the empty sequence named "<tt>__prefetchEnd</tt>", whose <tt>endEvent</tt> stops the first sequence (ending the display of waiting messages).
−	Please note the prefetch sequence should not be placed in a indefinite loop without proper configuration, if content update is necessary,follow the suggestion in best practice [[Fixed_Playlist,_Dynamic_Content]].	+	Please note the prefetch sequence should not be placed in a indefinite loop without proper configuration, if content update is necessary, follow the suggestion in best practice [[Fixed_Playlist,_Dynamic_Content]].

← Older revision		Revision as of 04:51, 23 August 2011
Line 54:		Line 54:

	The second sequence contains all prefetch instructions having the last item being the empty sequence named "<tt>__prefetchEnd</tt>", whose <tt>endEvent</tt> stops the first sequence (ending the display of waiting messages).		The second sequence contains all prefetch instructions having the last item being the empty sequence named "<tt>__prefetchEnd</tt>", whose <tt>endEvent</tt> stops the first sequence (ending the display of waiting messages).
		+	Please note the prefetch sequence should not be placed in a indefinite loop without proper configuration, if content update is necessary,follow the suggestion in best practice [[Fixed_Playlist,_Dynamic_Content]].
		+

	The third sequence starts by the same event that ends the first sequence, and plays media files downloaded by the prefetch sequence.		The third sequence starts by the same event that ends the first sequence, and plays media files downloaded by the prefetch sequence.

@@ Line 51: / Line 51: @@
 This example uses several SMIL techniques. 3 sequences are run inside a parallel time container. The first two sequences begin immediately (using default value of <tt>begin</tt> as "0s").
-The first sequence plays whatever waiting message the user wishes to display, until it is ended by the "<tt>endEvent</tt>" event sent as "<tt>__prefetchEnd</tt>" sequence finishes (from within the second sequence; 1 second after prefetch completes).
+The first sequence plays whatever waiting message the user wishes to display, until it is ended by the "<tt>endEvent</tt>" event sent as "<tt>__prefetchEnd</tt>" sequence finishes (from within the second sequence; 1 second after prefetch completes). Note that there are two <seq> layers as SMIL does not allow an "end" condition to be specified with "repeatCount", which potentially results in ambiguity.
 The second sequence contains all prefetch instructions having the last item being the empty sequence named "<tt>__prefetchEnd</tt>", whose <tt>endEvent</tt> stops the first sequence (ending the display of waiting messages).

@@ Line 20: / Line 20: @@
    <par>
-     <seq end="__prefetchEnd.endEvent" repeatCount="indefinite">
+     <seq end="__prefetchEnd.endEvent">
-      <!-- Play waiting prompt or media files that are already in the cache -->
+      <seq repeatCount="indefinite">
-      <video src="http://server/old1.mpg" />
+        <!-- Play waiting prompt or media files that are already in the cache -->
-      <video src="http://server/old2.mpg" />
+        <video src="http://server/old1.mpg" />
-      <video src="http://server/old3.mpg" />
+        <video src="http://server/old2.mpg" />
      </seq>

@@ Line 13: / Line 13: @@
 </source>
-Usually it is used while media is played in foreground. See sample code below.
+Usually it is used while media is played in foreground. See sample code in the section below.
 == Prefetching a file seamlessly ==
@@ Line 22: / Line 22: @@
      <seq end="__prefetchEnd.endEvent" repeatCount="indefinite">
        <!-- Play waiting prompt or media files that are already in the cache -->
      </seq>
      <seq>
-       <prefetch src="http://server/movie.mpg" />
+      <!-- Load files while first loop plays -->
-       <seq id="__prefetchEnd" dur="1s"/>
+       <prefetch src="http://server/new1.mpg" />
      </seq>
      <seq begin="__prefetchEnd.endEvent" repeatCount="indefinite">
-       <video src="http://server/movie.mpg" />
+      <!-- Play loaded files -->
      </seq>

← Older revision		Revision as of 07:43, 29 September 2009
Line 14:		Line 14:

	Usually it is used while media is played in foreground. See sample code below.		Usually it is used while media is played in foreground. See sample code below.
		+
		+	== Prefetching a file seamlessly ==

	<source lang="SMIL">		<source lang="SMIL">