};
// Text-to-Speech params
- this.ttsIndex = null; //leaf index
- this.ttsPosition = -1; //chunk (paragraph) number
-
+ this.ttsPlaying = false;
+ this.ttsIndex = null; //leaf index
+ this.ttsPosition = -1; //chunk (paragraph) number
+ this.ttsBuffering = false;
+ this.ttsPoller = null;
+ this.ttsFormat = null;
return this;
};
}
this.autoStop();
+ this.ttsStop();
this.removeSearchHilites();
this.mode = mode;
$(this.leafEdgeL).bind('click', this, function(e) {
e.data.autoStop();
+ e.data.ttsStop();
var jumpIndex = e.data.jumpIndexForLeftEdgePageX(e.pageX);
e.data.jumpToIndex(jumpIndex);
});
$(this.leafEdgeR).bind('click', this, function(e) {
e.data.autoStop();
+ e.data.ttsStop();
var jumpIndex = e.data.jumpIndexForRightEdgePageX(e.pageX);
e.data.jumpToIndex(jumpIndex);
});
this.setClickHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexL],
{ self: this },
function(e) {
+ e.data.self.ttsStop();
e.data.self.left();
e.preventDefault();
}
this.setClickHandler2UP( this.prefetchedImgs[this.twoPage.currentIndexR],
{ self: this },
function(e) {
+ e.data.self.ttsStop();
e.data.self.right();
e.preventDefault();
}
return;
}
this.autoStop();
+ this.ttsStop();
this.embedPopup = document.createElement("div");
$(this.embedPopup).css({
position: 'absolute',
$("#BookReader").append("<div id='BRtoolbar'>"
+ "<span id='BRtoolbarbuttons' style='float: right'>"
- + "<button class='BRicon rollover read_aloud' onclick='br.ttsStart(); return false;'/>"
+ + "<button class='BRicon rollover read_aloud' onclick='br.ttsToggle(); return false;'/>"
+ "<button class='BRicon print rollover' /> <button class='BRicon rollover embed' />"
+ "<form class='BRpageform' action='javascript:' onsubmit='br.jumpToPage(this.elements[0].value)'> <span class='label'>Page:<input id='BRpagenum' type='text' size='3' onfocus='br.autoStop();'></input></span></form>"
+ "<div class='BRtoolbarmode2' style='display: none'><button class='BRicon rollover book_leftmost' /><button class='BRicon rollover book_left' /><button class='BRicon rollover book_right' /><button class='BRicon rollover book_rightmost' /></div>"
if (newHash != self.oldUserHash) { // Only process new user hash once
//console.log('url change detected ' + self.oldLocationHash + " -> " + newHash);
+ self.ttsStop();
+
// Queue change if animating
if (self.animating) {
self.autoStop();
}
+// ttsToggle()
+//______________________________________________________________________________
+BookReader.prototype.ttsToggle = function () {
+ if (false == this.ttsPlaying) {
+ if(soundManager.supported()) {
+ this.ttsStart();
+ } else {
+ soundManager.onready(function(oStatus) {
+ if (oStatus.success) {
+ this.ttsStart();
+ } else {
+ alert('Could not load soundManger2, possibly due to FlashBlock. Audio playback is disabled');
+ }
+ }, this);
+ }
+ } else {
+ this.ttsStop();
+ }
+}
+
// ttsStart()
//______________________________________________________________________________
BookReader.prototype.ttsStart = function () {
- console.log('starting readAloud');
+ if (soundManager.debugMode) console.log('starting readAloud');
+ this.ttsPlaying = true;
this.ttsIndex = this.currentIndex();
- this.ttsGetText(this.ttsIndex, 'ttsStartCB');
+ this.ttsFormat = 'mp3';
+ if ($.browser.mozilla) {
+ this.ttsFormat = 'ogg';
+ }
+ this.ttsGetText(this.ttsIndex, 'ttsStartCB');
+}
+
+// ttsStop()
+//______________________________________________________________________________
+BookReader.prototype.ttsStop = function () {
+ if (false == this.ttsPlaying) return;
+
+ if (soundManager.debugMode) console.log('stopping readaloud');
+ soundManager.stopAll();
+ soundManager.destroySound('chunk'+this.ttsIndex+'-'+this.ttsPosition);
+ this.ttsRemoveHilites();
+ this.ttsRemovePopup();
+
+ this.ttsPlaying = false;
+ this.ttsIndex = null; //leaf index
+ this.ttsPosition = -1; //chunk (paragraph) number
+ this.ttsBuffering = false;
+ this.ttsPoller = null;
}
// ttsGetText()
//______________________________________________________________________________
BookReader.prototype.ttsGetText = function(index, callback) {
- var url = 'http://'+this.server+'/BookReader/BookReaderGetTextWrapper.php?path='+this.bookPath+'_djvu.xml&page='+index;
- $.ajax({url:url, dataType:'jsonp', jsonpCallback:callback});
+ var url = 'http://'+this.server+'/BookReader/BookReaderGetTextWrapper.php?path='+this.bookPath+'_djvu.xml&page='+index;
+ this.ttsAjax = $.ajax({url:url, dataType:'jsonp', jsonpCallback:callback});
}
// ttsStartCB(): text-to-speech callback
//______________________________________________________________________________
BookReader.prototype.ttsStartCB = function (data) {
- console.log('ttsStartCB got data:');
- console.log(data);
+ if (soundManager.debugMode) console.log('ttsStartCB got data: ' + data);
this.ttsChunks = data;
this.ttsHilites = [];
- //$.ajax({url:'http://'+this.ttsServer+'/renderAudio.py', data:{string:data[0][0], format:'ogg'}, dataType:'json'});
+
+ //deal with the page being blank
+ if (0 == data.length) {
+ if (soundManager.debugMode) console.log('first page is blank!');
+ if(this.ttsAdvance(true)) {
+ this.ttsGetText(this.ttsIndex, 'ttsStartCB');
+ }
+ return;
+ }
this.ttsShowPopup();
+ ///// whileloading: broken on safari
+ ///// onload fires on safari, but *after* the sound starts playing..
this.ttsPosition = -1;
var snd = soundManager.createSound({
id: 'chunk'+this.ttsIndex+'-0',
- //url: 'http://home.us.archive.org/~rkumar/arctic.ogg',
- url: 'http://home.us.archive.org/~rkumar/getOgg.php?string=' + escape(data[0][0]) + '&f=.ogg', //the .ogg is to trick SoundManager2 to use the HTML5 audio player
- whileloading: function(){if (this.bytesLoaded == this.bytesTotal) {$(br.popup).remove(); br.popup=null;}} //onload never fires...
+ //url: 'http://home.us.archive.org/~rkumar/arctic.ogg',
+ url: 'http://'+this.server+'/BookReader/BookReaderGetTTS.php?string=' + escape(data[0][0]) + '&format=.'+this.ttsFormat, //the .ogg is to trick SoundManager2 to use the HTML5 audio player
+ whileloading: function(){if (this.bytesLoaded == this.bytesTotal) this.br.ttsRemovePopup();}, //onload never fires in FF...
+ onload: function(){this.br.ttsRemovePopup();} //whileloading never fires in safari...
});
snd.br = this;
snd.load();
// ttsShowPopup
//______________________________________________________________________________
BookReader.prototype.ttsShowPopup = function() {
+ if (soundManager.debugMode) console.log('ttsShowPopup index='+this.ttsIndex+' pos='+this.ttsPosition);
+
this.popup = document.createElement("div");
$(this.popup).css({
- position: 'absolute',
- top: '20%',
- left: ($('#BRcontainer').attr('clientWidth')-600)/2 + 'px',
- width: '600px',
- padding: "20px",
- border: "3px double #999999",
- zIndex: 3,
- backgroundColor: "#f00",
- color: "#fff",
- fontSize: '1.875em'
- }).appendTo('#BookReader');
+ top: $('#BRtoolbar').height() + 'px',
+ left: $('.read_aloud').position().left + 'px',
+ width: $('#BRtoolbar').width()-$('.read_aloud').position().left + 'px',
+ height: '20px',
+ }).attr('className', 'BRttsPopUp').appendTo('#BookReader');
- htmlStr = '<p style="text-align:center;"><b>Ever wanted to wait while audio loads?</b><br/>';
- htmlStr += "It's OK. We all do.</p>";
+ htmlStr = ' ';
this.popup.innerHTML = htmlStr;
}
+// ttsRemovePopup
+//______________________________________________________________________________
+BookReader.prototype.ttsRemovePopup = function() {
+ $(this.popup).remove();
+ this.popup=null;
+}
+
// ttsNextPageCB
//______________________________________________________________________________
BookReader.prototype.ttsNextPageCB = function (data) {
this.ttsNextChunks = data;
- console.log('preloaded next chunks.. data is');
- console.log(data);
+ if (soundManager.debugMode) console.log('preloaded next chunks.. data is ' + data);
+
+ if (true == this.ttsBuffering) {
+ if (soundManager.debugMode) console.log('ttsNextPageCB: ttsBuffering is true');
+ this.ttsBuffering = false;
+ }
}
// ttsLoadChunk
BookReader.prototype.ttsLoadChunk = function (page, pos, string) {
var snd = soundManager.createSound({
id: 'chunk'+page+'-'+pos,
- url: 'http://home.us.archive.org/~rkumar/getOgg.php?string=' + escape(string) + '&f=.ogg' //the .ogg is to trick SoundManager2 to use the HTML5 audio player
+ url: 'http://'+this.server+'/BookReader/BookReaderGetTTS.php?string=' + escape(string) + '&format=.'+this.ttsFormat //the .ogg is to trick SoundManager2 to use the HTML5 audio player
});
snd.br = this;
snd.load()
// ttsNextChunk()
//______________________________________________________________________________
+// This function into two parts: ttsNextChunk gets run before page flip animation
+// and ttsNextChunkPhase2 get run after page flip animation.
+// If a page flip is necessary, ttsAdvance() will return false so Phase2 isn't
+// called. Instead, this.animationFinishedCallback is set, so that Phase2
+// continues after animation is finished.
+
BookReader.prototype.ttsNextChunk = function () {
- console.log(this);
- console.log(this.ttsPosition);
+ if (soundManager.debugMode) console.log('nextchunk pos=' + this.ttsPosition);
if (-1 != this.ttsPosition) {
- soundManager.destroySound('chunk'+this.ttsIndex+'-'+this.ttsPosition);
+ soundManager.destroySound('chunk'+this.ttsIndex+'-'+this.ttsPosition);
}
+
+ this.ttsRemoveHilites(); //remove old hilights
+
+ var moreToPlay = this.ttsAdvance();
+ if (moreToPlay) {
+ this.ttsNextChunkPhase2();
+ }
- if (this.ttsAdvance()) {
- console.log('next chunk is ');
- console.log(this.ttsPosition);
+ //This function is called again when ttsPlay() has finished playback.
+ //If the next chunk of text has not yet finished loading, ttsPlay()
+ //will start polling until the next chunk is ready.
+}
- this.ttsPlayAndPrefetch();
+// ttsNextChunkPhase2()
+//______________________________________________________________________________
+// page flip animation has now completed
+BookReader.prototype.ttsNextChunkPhase2 = function () {
+ if (null == this.ttsChunks) {
+ alert('error: ttsChunks is null?'); //TODO
+ return;
+ }
+
+ if (0 == this.ttsChunks.length) {
+ if (soundManager.debugMode) console.log('ttsNextChunk2: ttsChunks.length is zero.. hacking...');
+ this.ttsStartCB(this.ttsChunks);
+ return;
+ }
+
+ if (soundManager.debugMode) console.log('next chunk is ' + this.ttsPosition);
+
+ //prefetch next page of text
+ if (0 == this.ttsPosition) {
+ if (this.ttsIndex<(this.numLeafs-1)) {
+ this.ttsGetText(this.ttsIndex+1, 'ttsNextPageCB');
+ }
}
+
+ this.ttsPrefetchAudio();
+
+ this.ttsPlay();
}
// ttsAdvance()
// 4. do something smart is ttsNextChunks has not yet finished preloading (TODO)
// 5. stop playing at end of book
-BookReader.prototype.ttsAdvance = function () {
+BookReader.prototype.ttsAdvance = function (starting) {
this.ttsPosition++;
if (this.ttsPosition >= this.ttsChunks.length) {
if (this.ttsIndex == (this.numLeafs-1)) {
- console.log('tts stop');
+ if (soundManager.debugMode) console.log('tts stop');
return false;
} else {
- if (null != this.ttsNextChunks) {
- console.log('moving to next page!');
+ if ((null != this.ttsNextChunks) || (starting)) {
+ if (soundManager.debugMode) console.log('moving to next page!');
this.ttsIndex++;
this.ttsPosition = 0;
this.ttsChunks = this.ttsNextChunks;
this.ttsNextChunks = null;
- if ((this.ttsIndex != this.twoPage.currentIndexL) && (this.ttsIndex != this.twoPage.currentIndexR)) {
- this.next();
+
+ //A page flip might be necessary. This code is confusing since
+ //ttsNextChunks might be null if we are starting on a blank page.
+ if (2 == this.mode) {
+ if ((this.ttsIndex != this.twoPage.currentIndexL) && (this.ttsIndex != this.twoPage.currentIndexR)) {
+ if (!starting) {
+ this.animationFinishedCallback = this.ttsNextChunkPhase2;
+ this.next();
+ return false;
+ } else {
+ this.next();
+ return true;
+ }
+ } else {
+ return true;
+ }
}
- return true;
} else {
- console.log('ttsNextChunks is null');
+ if (soundManager.debugMode) console.log('ttsAdvance: ttsNextChunks is null');
return false;
}
}
}
-
+
return true;
}
-// ttsPlayAndPrefetch()
+// ttsPrefetchAudio()
//______________________________________________________________________________
-BookReader.prototype.ttsPlayAndPrefetch = function () {
- //prefetch next page of text
- if (0 == this.ttsPosition) {
- if (this.ttsIndex<(this.numLeafs-1)) {
- this.ttsGetText(this.ttsIndex+1, 'ttsNextPageCB');
+BookReader.prototype.ttsPrefetchAudio = function () {
+
+ if(false != this.ttsBuffering) {
+ alert('TTS Error: prefetch() called while content still buffering!');
+ return;
+ }
+
+ //preload next chunk
+ var nextPos = this.ttsPosition+1;
+ if (nextPos < this.ttsChunks.length) {
+ this.ttsLoadChunk(this.ttsIndex, nextPos, this.ttsChunks[nextPos][0]);
+ } else {
+ //for a short page, preload might nt have yet returned..
+ if (soundManager.debugMode) console.log('preloading chunk 0 from next page, index='+(this.ttsIndex+1));
+ if (null != this.ttsNextChunks) {
+ console.log(this.ttsNextChunks);
+ if (0 != this.ttsNextChunks.length) {
+ this.ttsLoadChunk(this.ttsIndex+1, 0, this.ttsNextChunks[0][0]);
+ } else {
+ if (soundManager.debugMode) console.log('prefetchAudio(): ttsNextChunks is zero length!');
+ }
+ } else {
+ if (soundManager.debugMode) console.log('ttsNextChunks is null, not preloading next page');
+ this.ttsBuffering = true;
}
}
-
- var chunk = this.ttsChunks[this.ttsPosition];
- console.log('position = ' + this.ttsPosition);
- console.log('chunk = ' + chunk);
- console.log(this.ttsChunks);
- //remove old hilights
- $(this.ttsHilites).remove();
- this.ttsHilites = [];
+}
+// ttsPlay()
+//______________________________________________________________________________
+BookReader.prototype.ttsPlay = function () {
+
+ var chunk = this.ttsChunks[this.ttsPosition];
+ if (soundManager.debugMode) {
+ console.log('ttsPlay position = ' + this.ttsPosition);
+ console.log('chunk = ' + chunk);
+ console.log(this.ttsChunks);
+ }
+
//add new hilights
if (2 == this.mode) {
this.ttsHilite2UP(chunk);
} else {
- alert('only 2 page mode supported for TTS..');
+ this.ttsHilite1UP(chunk);
}
- //preload next chunk
- var nextPos = this.ttsPosition+1;
- if (nextPos < this.ttsChunks.length) {
- this.ttsLoadChunk(this.ttsIndex, nextPos, this.ttsChunks[nextPos][0]);
+ this.ttsScrollToChunk(chunk);
+
+ //play current chunk
+ if (false == this.ttsBuffering) {
+ soundManager.play('chunk'+this.ttsIndex+'-'+this.ttsPosition,{onfinish:function(){br.ttsNextChunk();}});
} else {
- console.log('preloading chunk 0 from next page, index='+(this.ttsIndex+1))
- console.log(this.ttsNextChunks);
- this.ttsLoadChunk(this.ttsIndex+1, 0, this.ttsNextChunks[0][0]);
+ soundManager.play('chunk'+this.ttsIndex+'-'+this.ttsPosition,{onfinish:function(){br.ttsStartPolling();}});
+ }
+}
+
+// scrollToChunk()
+//______________________________________________________________________________
+BookReader.prototype.ttsScrollToChunk = function(chunk) {
+ if (this.constMode1up != this.mode) return;
+
+ var leafTop = 0;
+ var h;
+ var i;
+ for (i=0; i<this.ttsIndex; i++) {
+ h = parseInt(this._getPageHeight(i)/this.reduce);
+ leafTop += h + this.padding;
}
- //play current chunk
- soundManager.play('chunk'+this.ttsIndex+'-'+this.ttsPosition,{onfinish:function(){br.ttsNextChunk();}});
+ var chunkTop = chunk[1][3]; //coords are in l,b,r,t order
+ var chunkBot = chunk[chunk.length-1][1];
+
+ var topOfFirstChunk = leafTop + chunkTop/this.reduce;
+ var botOfLastChunk = leafTop + chunkBot/this.reduce;
+
+ if (soundManager.debugMode) console.log('leafTop = ' + leafTop + ' topOfFirstChunk = ' + topOfFirstChunk + ' botOfLastChunk = ' + botOfLastChunk);
+
+ var containerTop = $('#BRcontainer').attr('scrollTop');
+ var containerBot = containerTop + $('#BRcontainer').height();
+ if (soundManager.debugMode) console.log('containerTop = ' + containerTop + ' containerBot = ' + containerBot);
+
+ if ((topOfFirstChunk < containerTop) || (botOfLastChunk > containerBot)) {
+ //jumpToIndex scrolls so that chunkTop is centered.. we want chunkTop at the top
+ //this.jumpToIndex(this.ttsIndex, null, chunkTop);
+ $('#BRcontainer').animate({scrollTop: topOfFirstChunk},'fast');
+ }
+}
+
+// ttsHilite1UP()
+//______________________________________________________________________________
+BookReader.prototype.ttsHilite1UP = function(chunk) {
+ var i;
+ for (i=1; i<chunk.length; i++) {
+ //each rect is an array of l,b,r,t coords (djvu.xml ordering...)
+ var l = chunk[i][0];
+ var b = chunk[i][1];
+ var r = chunk[i][2];
+ var t = chunk[i][3];
+
+ var div = document.createElement('div');
+ this.ttsHilites.push(div);
+ $(div).attr('className', 'BookReaderSearchHilite').appendTo('#pagediv'+this.ttsIndex);
+
+ $(div).css({
+ width: (r-l)/this.reduce + 'px',
+ height: (b-t)/this.reduce + 'px',
+ left: l/this.reduce + 'px',
+ top: t/this.reduce +'px'
+ });
+ }
+
}
// ttsHilite2UP()
//______________________________________________________________________________
BookReader.prototype.ttsHilite2UP = function (chunk) {
var i;
- for (i=0; i<chunk.length; i++) {
+ for (i=1; i<chunk.length; i++) {
//each rect is an array of l,b,r,t coords (djvu.xml ordering...)
var l = chunk[i][0];
var b = chunk[i][1];
this.setHilightCss2UP(div, this.ttsIndex, l, r, t, b);
}
}
+
+// ttsRemoveHilites()
+//______________________________________________________________________________
+BookReader.prototype.ttsRemoveHilites = function (chunk) {
+ $(this.ttsHilites).remove();
+ this.ttsHilites = [];
+}
+
+// ttsStartPolling()
+//______________________________________________________________________________
+// Play of the current chunk has ended, but the next chunk has not yet been loaded.
+// We need to wait for the text for the next page to be loaded, so we can
+// load the next audio chunk
+BookReader.prototype.ttsStartPolling = function () {
+ if (soundManager.debugMode) console.log('Starting the TTS poller...');
+ var self = this;
+ this.ttsPoller=setInterval(function(){
+ if (self.ttsBuffering) {return;}
+
+ if (soundManager.debugMode) console.log('TTS buffering finished!');
+ clearInterval(self.ttsPoller);
+ self.ttsPoller = null;
+ self.ttsPrefetchAudio();
+ self.ttsNextChunk();
+ },500);
+}
\ No newline at end of file
projects / bookreader.git / blobdiff