marytts.server.Request Maven / Gradle / Ivy
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/**
* Copyright 2000-2006 DFKI GmbH.
* All Rights Reserved. Use is subject to license terms.
*
* This file is part of MARY TTS.
*
* MARY TTS is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see
*
* A request is used as follows. First, its basic properties are set in the constructor, such as its input and output types.
* Second, the input data is provided to the request either by directly setting it (setInputData()) or by reading it
* from a Reader (readInputData()). Third, the request is processed (process()). Finally, the output
* data is either accessed directly (getOutputData()) or written to an output stream (writeOutputData).
*/
public class Request {
protected MaryDataType inputType;
protected MaryDataType outputType;
protected String outputTypeParams;
protected AudioFileFormat audioFileFormat;
protected AppendableSequenceAudioInputStream appendableAudioStream;
protected Locale defaultLocale;
protected Voice defaultVoice;
protected String defaultStyle;
protected String defaultEffects;
protected int id;
protected Logger logger;
protected MaryData inputData;
protected MaryData outputData;
protected boolean streamAudio = false;;
protected boolean abortRequested = false;
// Keep track of timing info for each module
// (map MaryModule onto Long)
protected Set usedModules;
protected Map timingInfo;
public Request(MaryDataType inputType, MaryDataType outputType, Locale defaultLocale, Voice defaultVoice,
String defaultEffects, String defaultStyle, int id, AudioFileFormat audioFileFormat) {
this(inputType, outputType, defaultLocale, defaultVoice, defaultEffects, defaultStyle, id, audioFileFormat, false, null);
}
public Request(MaryDataType inputType, MaryDataType outputType, Locale defaultLocale, Voice defaultVoice,
String defaultEffects, String defaultStyle, int id, AudioFileFormat audioFileFormat, boolean streamAudio,
String outputTypeParams) {
if (!inputType.isInputType())
throw new IllegalArgumentException("not an input type: " + inputType.name());
if (!outputType.isOutputType())
throw new IllegalArgumentException("not an output type: " + outputType.name());
this.inputType = inputType;
this.outputType = outputType;
this.defaultLocale = defaultLocale;
this.defaultVoice = defaultVoice;
this.defaultEffects = defaultEffects;
this.defaultStyle = defaultStyle;
this.id = id;
this.audioFileFormat = audioFileFormat;
this.streamAudio = streamAudio;
if (outputType == MaryDataType.get("AUDIO")) {
if (audioFileFormat == null)
throw new NullPointerException("audio file format is needed for output type AUDIO");
this.appendableAudioStream = new AppendableSequenceAudioInputStream(audioFileFormat.getFormat(), null);
} else {
this.appendableAudioStream = null;
}
this.logger = MaryUtils.getLogger("R " + id);
this.outputTypeParams = outputTypeParams;
this.inputData = null;
this.outputData = null;
StringBuilder info = new StringBuilder("New request (input type \"" + inputType.name() + "\", output type \""
+ outputType.name());
if (this.defaultVoice != null)
info.append("\", voice \"" + this.defaultVoice.getName());
if (this.defaultEffects != null && this.defaultEffects != "")
info.append("\", effect \"" + this.defaultEffects);
if (this.defaultStyle != null && this.defaultStyle != "")
info.append("\", style \"" + this.defaultStyle);
if (audioFileFormat != null)
info.append("\", audio \"" + audioFileFormat.getType().toString() + "\"");
if (streamAudio)
info.append(", streaming");
info.append(")");
logger.info(info.toString());
// Keep track of timing info for each module
// (map MaryModule onto Long)
usedModules = new LinkedHashSet();
timingInfo = new HashMap();
}
public MaryDataType getInputType() {
return inputType;
}
public MaryDataType getOutputType() {
return outputType;
}
public Locale getDefaultLocale() {
return defaultLocale;
}
public Voice getDefaultVoice() {
return defaultVoice;
}
public String getDefaultStyle() {
return defaultStyle;
}
public String getDefaultEffects() {
return defaultEffects;
}
public int getId() {
return id;
}
public AudioFileFormat getAudioFileFormat() {
return audioFileFormat;
}
public AppendableSequenceAudioInputStream getAudio() {
return appendableAudioStream;
}
public boolean getStreamAudio() {
return streamAudio;
}
/**
* Inform this request that any further processing does not make sense.
*/
public void abort() {
logger.info("Requesting abort.");
abortRequested = true;
}
/**
* Set the input data directly, in case it is already in the form of a MaryData object.
*
* @param inputData
* inputData
*/
public void setInputData(MaryData inputData) {
if (inputData != null && inputData.getType() != inputType) {
throw new IllegalArgumentException("Input data has wrong data type (expected " + inputType.toString() + ", got "
+ inputData.getType().toString());
}
if (defaultVoice == null) {
defaultVoice = Voice.getSuitableVoice(inputData);
}
// assert defaultVoice != null;
if (inputData.getDefaultVoice() == null) {
inputData.setDefaultVoice(defaultVoice);
}
inputData.setDefaultStyle(defaultStyle);
inputData.setDefaultEffects(defaultEffects);
this.inputData = inputData;
}
/**
* Read the input data from a Reader.
*
* @param inputReader
* inputReader
* @throws Exception
* Exception
*/
public void readInputData(Reader inputReader) throws Exception {
String inputText = FileUtils.getReaderAsString(inputReader);
setInputData(inputText);
}
public void setInputData(String inputText) throws Exception {
inputData = new MaryData(inputType, defaultLocale);
inputData.setWarnClient(true); // log warnings to client
// For RAWMARYXML, a validating parse is not possible
// because RAWMARYXML is not tokenised, so it does not yet
// fulfill the MaryXML Schema constraints.
if (inputType == MaryDataType.get("RAWMARYXML")) {
inputData.setValidating(false);
} else if (inputType.isMaryXML()) {
inputData.setValidating(MaryProperties.getBoolean("maryxml.validate.input"));
}
inputData.setData(inputText);
if (defaultVoice == null) {
defaultVoice = Voice.getSuitableVoice(inputData);
}
// assert defaultVoice != null;
inputData.setDefaultVoice(defaultVoice);
inputData.setDefaultStyle(defaultStyle);
inputData.setDefaultEffects(defaultEffects);
}
/**
* Process the input data to produce the output data.
*
* @throws Exception
* Exception
* @see #getOutputData for direct access to the resulting output data
* @see #writeOutputData for writing the output data to a stream
*/
public void process() throws Exception {
assert Mary.currentState() == Mary.STATE_RUNNING;
long startTime = System.currentTimeMillis();
if (inputData == null)
throw new NullPointerException("Input data is not set.");
if (inputType.isXMLType() && inputData.getDocument() == null)
throw new NullPointerException("Input data contains no XML document.");
if (inputType.isMaryXML() && !inputData.getDocument().getDocumentElement().hasAttribute("xml:lang"))
throw new IllegalArgumentException("Mandatory attribute xml:lang is missing from maryxml document element.");
NodeList inputDataList;
MaryData rawmaryxml;
// Is inputdata of a type that must be converted to RAWMARYXML?
if (outputType.name().equals("PRAAT_TEXTGRID")) { // never chunk for PRAAT_TEXTGRID
outputData = processOrLookupOneChunk(inputData, outputType, outputTypeParams);
return;
} else if (inputType.isTextType() && inputType.name().startsWith("TEXT") || inputType.isXMLType()
&& !inputType.isMaryXML()) {
// Convert to RAWMARYXML
rawmaryxml = processOrLookupOneChunk(inputData, MaryDataType.get("RAWMARYXML"), null);
// assert rawmaryxml.getDefaultVoice() != null;
inputDataList = splitIntoChunks(rawmaryxml);
} else if (inputType.equals(MaryDataType.get("RAWMARYXML"))) {
rawmaryxml = inputData;
inputDataList = splitIntoChunks(inputData);
} else {
// other input data types are processed as a whole
outputData = processOrLookupOneChunk(inputData, outputType, outputTypeParams);
// assert outputData.getDefaultVoice() != null;
if (outputType == MaryDataType.AUDIO) {
assert appendableAudioStream != null;
appendableAudioStream.append(outputData.getAudio());
appendableAudioStream.doneAppending();
}
return;
}
assert rawmaryxml != null && rawmaryxml.getType().equals(MaryDataType.get("RAWMARYXML"))
&& rawmaryxml.getDocument() != null;
moveBoundariesIntoParagraphs(rawmaryxml.getDocument());
// Now the beyond-RAWMARYXML processing:
outputData = new MaryData(outputType, defaultLocale);
outputData.setDefaultVoice(defaultVoice);
outputData.setDefaultStyle(defaultStyle);
outputData.setDefaultEffects(defaultEffects);
if (outputType.isMaryXML()) {
// use the input or intermediate MaryXML document
// as the starting point for MaryXML output types,
// in order to gradually enrich them:
outputData.setDocument(rawmaryxml.getDocument());
} else if (outputType.equals(MaryDataType.get("AUDIO"))) {
outputData.setAudio(appendableAudioStream);
outputData.setAudioFileFormat(audioFileFormat);
}
int len = inputDataList.getLength();
for (int i = 0; i < len && !abortRequested; i++) {
Element currentInputParagraph = (Element) inputDataList.item(i);
assert currentInputParagraph.getTagName().equals(MaryXML.PARAGRAPH);
NodeList outputNodeList = null;
// Only process paragraph if there is any text below it:
if (MaryDomUtils.getPlainTextBelow(currentInputParagraph).trim().equals("")) {
outputNodeList = currentInputParagraph.getChildNodes();
} else { // process "real" data:
MaryData oneInputData = extractParagraphAsMaryData(rawmaryxml, currentInputParagraph);
// assert oneInputData.getDefaultVoice() != null;
MaryData oneOutputData = processOrLookupOneChunk(oneInputData, outputType, outputTypeParams);
// assert oneOutputData.getDefaultVoice() != null;
if (outputType.isMaryXML()) {
NodeList outParagraphList = oneOutputData.getDocument().getDocumentElement()
.getElementsByTagName(MaryXML.PARAGRAPH);
// This does not hold for Tibetan:
// assert outParagraphList.getLength() == 1;
outputNodeList = outParagraphList;
} else { // output is not MaryXML, e.g. text or audio
assert outputData != null;
outputData.append(oneOutputData);
}
}
if (outputType.isMaryXML()) {
assert outputNodeList != null;
// And now replace the paragraph in-place:
MaryDomUtils.replaceElement(currentInputParagraph, outputNodeList);
}
}
long stopTime = System.currentTimeMillis();
logger.info("Request processed in " + (stopTime - startTime) + " ms.");
for (MaryModule m : usedModules) {
logger.info(" " + m.name() + " took " + timingInfo.get(m) + " ms");
}
if (appendableAudioStream != null)
appendableAudioStream.doneAppending();
}
/**
* Convert the given data into the requested output type, either by looking it up in the cache or by actually processing it.
*
* @param oneInputData
* the input data to convert
* @param oneOutputType
* the output type to convert to
* @param outputParams
* the output parameters
* @throws TransformerConfigurationException
* TransformerConfigurationException
* @throws FileNotFoundException
* FileNotFoundException
* @throws TransformerException
* TransformerException
* @throws IOException
* IOException
* @throws Exception
* Exception
*/
private MaryData processOrLookupOneChunk(MaryData oneInputData, MaryDataType oneOutputType, String outputParams)
throws TransformerConfigurationException, FileNotFoundException, TransformerException, IOException, Exception {
if (logger.getEffectiveLevel().equals(Level.DEBUG)
&& (oneInputData.getType().isTextType() || oneInputData.getType().isXMLType())) {
logger.debug("Now converting the following input data from " + oneInputData.getType() + " to " + oneOutputType + ":");
ByteArrayOutputStream dummy = new ByteArrayOutputStream();
oneInputData.writeTo(dummy);
// side effect: writeTo() writes to log if debug
}
Locale locale = determineLocale(oneInputData);
assert locale != null;
MaryCache cache = null;
if (MaryProperties.getBoolean("cache")) {
cache = MaryCache.getCache();
}
if (cache == null) {
return processOneChunk(oneInputData, oneOutputType, outputParams, locale);
}
String inputtype = null;
String outputtype = null;
String localeString = null;
String voice = null;
String inputtext = null;
// try to look up the requested result in the cache:
inputtype = oneInputData.getType().name();
outputtype = oneOutputType.name();
ByteArrayOutputStream sw = new ByteArrayOutputStream();
oneInputData.writeTo(sw);
inputtext = new String(sw.toByteArray(), "UTF-8");
voice = defaultVoice != null ? defaultVoice.getName() : null;
localeString = locale.toString();
if (oneOutputType.isTextType()) {
try {
String outputtext = cache.lookupText(inputtype, outputtype, localeString, voice, outputParams, defaultStyle,
defaultEffects, inputtext);
if (outputtext != null) {
MaryData outData = new MaryData(oneOutputType, locale);
ByteArrayInputStream sr = new ByteArrayInputStream(outputtext.getBytes());
outData.readFrom(sr);
sr.close();
outData.setDefaultVoice(defaultVoice);
outData.setDefaultStyle(defaultStyle);
outData.setDefaultEffects(defaultEffects);
return outData;
}
} catch (Exception e) {
logger.warn("Problem looking up text in cache", e);
}
} else if (outputtype.equals("AUDIO")) {
try {
byte[] wavFileData = cache.lookupAudio(inputtype, localeString, voice, outputParams, defaultStyle,
defaultEffects, inputtext);
if (wavFileData != null) {
AudioInputStream ais = AudioSystem.getAudioInputStream(new ByteArrayInputStream(wavFileData));
MaryData outData = new MaryData(oneOutputType, locale);
outData.setAudio(ais);
outData.setAudioFileFormat(audioFileFormat);
return outData;
}
} catch (Exception e) {
logger.warn("Problem looking up audio in cache", e);
}
} else {
// logger.debug("Don't know how to cache data of type '"+outputtype+"'");
}
// Couldn't get it from cache, need to process
if (oneOutputType.equals(MaryDataType.AUDIO) || oneOutputType.equals(MaryDataType.REALISED_ACOUSTPARAMS)
|| oneOutputType.equals(MaryDataType.REALISED_DURATIONS)) {
// Special case: when we generate AUDIO, we also remember REALISED_ACOUSTPARAMS and REALISED_DURATIONS formats and
// vice versa
MaryData audioData = processOneChunk(oneInputData, MaryDataType.AUDIO, outputParams, locale);
MaryData realisedAcoustparams = processOneChunk(audioData, MaryDataType.REALISED_ACOUSTPARAMS, outputParams, locale);
MaryData realisedDurations = processOneChunk(audioData, MaryDataType.REALISED_DURATIONS, outputParams, locale);
insertAudioIntoCache(cache, inputtype, localeString, voice, outputParams, inputtext, audioData);
insertTextIntoCache(cache, inputtype, MaryDataType.REALISED_ACOUSTPARAMS.name(), localeString, voice, outputParams,
inputtext, realisedAcoustparams);
insertTextIntoCache(cache, inputtype, MaryDataType.REALISED_DURATIONS.name(), localeString, voice, outputParams,
inputtext, realisedDurations);
if (oneOutputType.equals(MaryDataType.AUDIO))
return audioData;
else if (oneOutputType.equals(MaryDataType.REALISED_ACOUSTPARAMS))
return realisedAcoustparams;
return realisedDurations;
} else { // simple, straightforward processing of output
MaryData oneOutputData = processOneChunk(oneInputData, oneOutputType, outputParams, locale);
// Remember the processing result in the cache
if (oneOutputType.isTextType()) {
insertTextIntoCache(cache, inputtype, outputtype, localeString, voice, outputParams, inputtext, oneOutputData);
} else {
logger.debug("Don't know how to cache data of type '" + outputtype + "'");
}
return oneOutputData;
}
}
private void insertAudioIntoCache(MaryCache cache, String inputtype, String localeString, String voice, String outputParams,
String inputtext, MaryData currentData) throws IOException, SQLException, UnsupportedAudioFileException {
AppendableSequenceAudioInputStream as = (AppendableSequenceAudioInputStream) currentData.getAudio();
assert as != appendableAudioStream;
as.doneAppending();
ByteArrayOutputStream baos = new ByteArrayOutputStream(2 * (int) as.getFrameLength() + 100);
AudioSystem.write(as, AudioFileFormat.Type.WAVE, baos);
byte[] wavFileData = baos.toByteArray();
cache.insertAudio(inputtype, localeString, voice, outputParams, defaultStyle, defaultEffects, inputtext, wavFileData);
AudioInputStream ais = AudioSystem.getAudioInputStream(new ByteArrayInputStream(wavFileData));
currentData.setAudio(ais);
}
private void insertTextIntoCache(MaryCache cache, String inputtype, String outputtype, String localeString, String voice,
String outputParams, String inputtext, MaryData currentData) {
try {
ByteArrayOutputStream sw = new ByteArrayOutputStream();
currentData.writeTo(sw);
String outputtext = new String(sw.toByteArray(), "UTF-8");
cache.insertText(inputtype, outputtype, localeString, voice, outputParams, defaultStyle, defaultEffects, inputtext,
outputtext);
} catch (Exception e) {
logger.warn("Problem inserting text into cache", e);
}
}
private MaryData processOneChunk(MaryData oneInputData, MaryDataType oneOutputType, String outputParams, Locale locale)
throws Exception, TransformerConfigurationException, FileNotFoundException, TransformerException, IOException {
logger.debug("Determining which modules to use");
List neededModules = ModuleRegistry.modulesRequiredForProcessing(oneInputData.getType(), oneOutputType,
locale, oneInputData.getDefaultVoice());
// Now neededModules contains references to the needed modules,
// in the order in which they are to process the data.
if (neededModules == null) {
// The modules we have cannot be combined such that
// the outputType can be generated from the inputData type.
String message = "No known way of generating output (" + oneOutputType.name() + ") from input("
+ oneInputData.getType().name() + "), no processing path through modules.";
throw new UnsupportedOperationException(message);
}
usedModules.addAll(neededModules);
logger.info("Handling request using the following modules:");
for (MaryModule m : neededModules) {
logger.info("- " + m.name() + " (" + m.getClass().getName() + ")");
}
MaryData currentData = oneInputData;
for (MaryModule m : neededModules) {
if (abortRequested)
break;
if (m.getState() == MaryModule.MODULE_OFFLINE) {
// This should happen only in command line mode:
assert MaryProperties.needProperty("server").compareTo("commandline") == 0;
logger.info("Starting module " + m.name());
m.startup();
assert m.getState() == MaryModule.MODULE_RUNNING;
}
long moduleStartTime = System.currentTimeMillis();
// Let synthesis know which audio format to produce:
// (this isn't nice -- instead, we could add a reference
// to the Request to each MaryData, and look up request-specific
// settings such as default voice and audio file format type
// from where it is required.)
if (m.outputType() == MaryDataType.get("AUDIO")) {
currentData.setAudioFileFormat(audioFileFormat);
currentData.setAudio(new AppendableSequenceAudioInputStream(audioFileFormat.getFormat(), null));
}
// TODO: The following hack makes sure that the Synthesis module gets outputParams. Make this more general and robust.
if (m.outputType() == oneOutputType || m.outputType() == MaryDataType.AUDIO) {
currentData.setOutputParams(outputParams);
}
if (logger.getEffectiveLevel().equals(Level.DEBUG)
&& (currentData.getType().isTextType() || currentData.getType().isXMLType())) {
logger.debug("Handing the following data to the next module:");
ByteArrayOutputStream dummy = new ByteArrayOutputStream();
currentData.writeTo(dummy);
// side effect: writeTo() writes to log if debug
}
logger.info("Next module: " + m.name());
MaryData outData = null;
try {
outData = m.process(currentData);
} catch (Exception e) {
throw new Exception("Module " + m.name() + ": Problem processing the data.", e);
}
if (outData == null) {
throw new NullPointerException("Module " + m.name() + " returned null. This should not happen.");
}
outData.setDefaultVoice(defaultVoice);
outData.setDefaultStyle(defaultStyle);
outData.setDefaultEffects(defaultEffects);
currentData = outData;
long moduleStopTime = System.currentTimeMillis();
long delta = moduleStopTime - moduleStartTime;
Long soFar = timingInfo.get(m);
if (soFar != null)
timingInfo.put(m, new Long(soFar.longValue() + delta));
else
timingInfo.put(m, new Long(delta));
if (MaryRuntimeUtils.veryLowMemoryCondition()) {
logger.info("Very low memory condition detected (only " + MaryUtils.availableMemory()
+ " bytes left). Triggering garbage collection.");
Runtime.getRuntime().gc();
logger.info("After garbage collection: " + MaryUtils.availableMemory() + " bytes available.");
}
}
if (currentData.getType() == MaryDataType.AUDIO) {
AudioInputStream ais = currentData.getAudio();
assert ais != null;
assert ais instanceof AppendableSequenceAudioInputStream;
((AppendableSequenceAudioInputStream) ais).doneAppending();
}
return currentData;
}
/**
* Split the entire rawmaryxml document into individual paragraph elements. Any text not enclosed by a paragraph in the input
* will be enclosed by a new paragraph element, which is then included in the return.
*
* @param rawmaryxml
* the maryxml document to split into paragraph chunks; this input document will be modified!
* @return a nodelist containing the paragraph elements in the modified rawmaryxml document.
*/
private NodeList splitIntoChunks(MaryData rawmaryxml) {
// TODO: replace this with code that combines this and the splitting functionality of Synthesis: one chunk is one locale
// and one voice
if (rawmaryxml == null)
throw new NullPointerException("Received null data");
if (rawmaryxml.getType() != MaryDataType.get("RAWMARYXML"))
throw new IllegalArgumentException("Expected data of type RAWMARYXML, got " + rawmaryxml.getType());
if (logger.getEffectiveLevel().equals(Level.DEBUG)) {
logger.debug("Now splitting the following RAWMARYXML data into chunks:");
ByteArrayOutputStream dummy = new ByteArrayOutputStream();
try {
rawmaryxml.writeTo(dummy);
} catch (Exception ex) {
logger.debug(ex);
}
// side effect: writeTo() writes to log if debug
}
Document doc = rawmaryxml.getDocument();
Element root = doc.getDocumentElement();
// First, make sure there are no "dangling" text nodes
// or empty elements
// that are not enclosed by any paragraph elements.
TreeWalker tw = ((DocumentTraversal) doc).createTreeWalker(root, NodeFilter.SHOW_TEXT, null, false);
// TODO: clean up the following code wrt checks for non-TEXT nodes
Node firstNode = null;
Node lastNode = null;
Node currentNode = null;
while ((currentNode = tw.nextNode()) != null) {
// Ignore whitespace-only nodes:
if (currentNode.getNodeType() == Node.TEXT_NODE) {
Text currentTextNode = (Text) currentNode;
if (currentTextNode.getData().trim().length() == 0)
continue;
}
if (!MaryDomUtils.hasAncestor(currentNode, MaryXML.PARAGRAPH)) {
// Outside paragraphs:
if (firstNode == null)
firstNode = currentNode;
lastNode = currentNode;
} else {
// a node below a paragraph -- enclose any previous text
if (firstNode != null) { // have something to enclose
String first;
if (firstNode.getNodeType() == Node.TEXT_NODE) {
first = ((Text) firstNode).getData();
} else {
first = firstNode.getNodeName();
}
String last;
if (lastNode.getNodeType() == Node.TEXT_NODE) {
last = ((Text) lastNode).getData();
} else {
last = lastNode.getNodeName();
}
logger.debug("Found text node below paragraph; enclosing from '" + first + "' to '" + last + "'");
MaryDomUtils.encloseNodesWithNewElement(firstNode, lastNode, MaryXML.PARAGRAPH);
firstNode = null;
lastNode = null;
}
}
}
// any leftovers to enclose?
if (firstNode != null) { // have something to enclose
String first;
if (firstNode.getNodeType() == Node.TEXT_NODE) {
first = ((Text) firstNode).getData();
} else {
first = firstNode.getNodeName();
}
String last;
if (lastNode.getNodeType() == Node.TEXT_NODE) {
last = ((Text) lastNode).getData();
} else {
last = lastNode.getNodeName();
}
logger.debug("Found text node below paragraph; enclosing from '" + first + "' to '" + last + "'");
MaryDomUtils.encloseNodesWithNewElement(firstNode, lastNode, MaryXML.PARAGRAPH);
}
return doc.getElementsByTagName(MaryXML.PARAGRAPH);
/*
* // Second, for each paragraph, create a separate MaryData. tw = ((DocumentTraversal)doc).createTreeWalker(root,
* NodeFilter.SHOW_ELEMENT, new NameNodeFilter(MaryXML.PARAGRAPH), false); Element paragraph = null; while ((paragraph =
* (Element) tw.nextNode()) != null) { MaryData md = extractParagraphAsMaryData(rawmaryxml, paragraph); result.add(md);
*
* if (logger.getEffectiveLevel().equals(Level.DEBUG)) { logger.debug("Created chunk:"); ByteArrayOutputStream dummy = new
* ByteArrayOutputStream(); try { md.writeTo(dummy); } catch (Exception ex) { logger.debug(ex); } // side effect:
* writeTo() writes to log if debug }
*
* } return result;
*/
}
/**
* Move all the boundary elements outside of paragraphs into paragraphs.
*
* @param rawmaryxml
* rawmaryxml
*/
private static void moveBoundariesIntoParagraphs(Document rawmaryxml) {
if (rawmaryxml == null) {
throw new NullPointerException("Received null rawmaryxml");
}
TreeWalker paraTW = ((DocumentTraversal) rawmaryxml).createTreeWalker(rawmaryxml.getDocumentElement(),
NodeFilter.SHOW_ELEMENT, new NameNodeFilter(MaryXML.PARAGRAPH), true);
TreeWalker tw = ((DocumentTraversal) rawmaryxml).createTreeWalker(rawmaryxml.getDocumentElement(),
NodeFilter.SHOW_ELEMENT, new NameNodeFilter(new String[] { MaryXML.PARAGRAPH, MaryXML.BOUNDARY }), true);
// Find first paragraph, to see if there are any leading boundaries
Element firstParagraph = (Element) paraTW.nextNode();
if (firstParagraph == null) {
throw new NullPointerException("Document does not have a paragraph");
}
tw.setCurrentNode(firstParagraph);
// Now move any leading boundaries to the left of into the first paragraph
Element boundary = null;
while ((boundary = (Element) tw.previousNode()) != null) {
assert boundary.getTagName().equals(MaryXML.BOUNDARY);
firstParagraph.insertBefore(boundary, firstParagraph.getFirstChild());
tw.setCurrentNode(firstParagraph);
}
// Now, for each paragraph, all the boundaries following it are shifted inside it
tw.setCurrentNode(firstParagraph);
Element paragraph = firstParagraph;
Element current = null;
while ((current = (Element) tw.nextNode()) != null) {
if (current.getTagName().equals(MaryXML.PARAGRAPH)) {
paragraph = current;
} else { // current is a boundary
if (!DomUtils.hasAncestor(current, MaryXML.PARAGRAPH)) {
// current is a boundary outside a paragraph
paragraph.appendChild(current);
}
}
}
}
/**
* For a given maryxml document, extract one paragraph element as a separate document, including any parent nodes around the
* paragraph element.
*
* @param maryxml
* maryxml
* @param paragraph
* paragraph
*/
private static MaryData extractParagraphAsMaryData(MaryData maryxml, Element paragraph) {
if (!maryxml.getType().isMaryXML()) {
throw new IllegalArgumentException("Expected MaryXML data");
}
String rootLanguage = maryxml.getDocument().getDocumentElement().getAttribute("xml:lang");
Document newDoc = MaryXML.newDocument();
Element newRoot = newDoc.getDocumentElement();
// Now import not only the paragraph itself (with substructure,
// but also all the nodes above it (without substructure).
Element importedInner = (Element) newDoc.importNode(paragraph, true);
Element toImport = (Element) paragraph.getParentNode();
while (!toImport.getTagName().equals(MaryXML.MARYXML)) {
Element imported = (Element) newDoc.importNode(toImport, false);
imported.appendChild(importedInner);
importedInner = imported;
toImport = (Element) toImport.getParentNode();
}
newRoot.appendChild(importedInner);
// Determine the language of the new document.
String language = rootLanguage;
Element voice = (Element) MaryDomUtils.getAncestor(paragraph, MaryXML.VOICE);
if (voice != null) {
if (voice.hasAttribute("xml:lang")) {
language = voice.getAttribute("xml:lang");
} else if (voice.hasAttribute("name")) {
String name = voice.getAttribute("name");
Voice v = Voice.getVoice(name);
if (v != null && v.getLocale() != null)
language = MaryUtils.locale2xmllang(v.getLocale());
}
}
newRoot.setAttribute("xml:lang", language);
MaryData md = new MaryData(maryxml.getType(), MaryUtils.string2locale(language));
Voice dVoice = maryxml.getDefaultVoice();
if (dVoice != null) {
md.setDefaultVoice(dVoice);
}
// md.setAudioEffects(maryxml.getAudioEffects());
md.setDocument(newDoc);
return md;
}
/**
* For a given instance of MaryData, determine the locale -- either from the data type, or, if it is not specified there, from
* the XML document root element's attribute "xml:lang".
*
* @param data
* data
*/
private Locale determineLocale(MaryData data) {
Locale locale = null;
if (data.getType().isXMLType()) {
// We can determine the locale if the document element
// has an xml:lang attribute.
Document doc = data.getDocument();
if (doc != null) {
Element docEl = doc.getDocumentElement();
if (docEl != null) {
String langCode = docEl.getAttribute("xml:lang");
if (!langCode.equals("")) {
locale = MaryUtils.string2locale(langCode);
}
}
}
}
assert defaultLocale != null;
return locale != null ? locale : defaultLocale;
}
/**
* Direct access to the output data.
*
* @return outputdata
*/
public MaryData getOutputData() {
return outputData;
}
/**
* Write the output data to the specified OutputStream.
*
* @param outputStream
* outputStream
* @throws Exception
* Exception
*/
public void writeOutputData(OutputStream outputStream) throws Exception {
if (outputData == null) {
throw new NullPointerException("No output data -- did process() succeed?");
}
if (outputStream == null)
throw new NullPointerException("cannot write to null output stream");
// Safety net: if the output is not written within a certain amount of
// time, give up. This prevents our thread from being locked forever if an
// output deadlock occurs (happened very rarely on Java 1.4.2beta).
final OutputStream os = outputStream;
Timer timer = new Timer();
TimerTask timerTask = new TimerTask() {
public void run() {
logger.warn("Timeout occurred while writing output. Forcefully closing output stream.");
try {
os.close();
} catch (IOException ioe) {
logger.warn(ioe);
}
}
};
int timeout = MaryProperties.getInteger("modules.timeout", 10000);
if (outputType.equals(MaryDataType.get("AUDIO"))) {
// This means either a lot of data (for WAVE etc.) or a lot of processing
// effort (for MP3), so allow for a lot of time:
timeout *= 5;
}
timer.schedule(timerTask, timeout);
try {
outputData.writeTo(os);
} catch (Exception e) {
timer.cancel();
throw e;
}
timer.cancel();
}
}
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