/*
* @(#)ProcessEngine.java 1.16 02/08/21
*
* Copyright (c) 1996-2002 Sun Microsystems, Inc. All rights reserved.
*/
package com.sun.media;
import java.io.*;
import java.util.*;
import java.awt.*;
import javax.media.*;
import javax.media.protocol.*;
import javax.media.control.*;
import javax.media.format.*;
import javax.media.renderer.*;
import com.sun.media.util.*;
import com.sun.media.controls.*;
import com.sun.media.renderer.audio.AudioRenderer;
import com.sun.media.codec.video.colorspace.RGBScaler;
/**
* ProcessEngine implements the media engine for processors.
*/
public class ProcessEngine extends PlaybackEngine {
protected BasicMuxModule muxModule;
protected ContentDescriptor outputContentDes = null;
public ProcessEngine(BasicProcessor p) {
super(p);
}
/**
* Configuring the engine.
*/
protected boolean doConfigure() {
if (!doConfigure1())
return false;
// The indices to the connector names, tracks, and track controls
// should all correspond to each other.
String names[] = source.getOutputConnectorNames();
trackControls = new BasicTrackControl[tracks.length];
for (int i = 0; i < tracks.length; i++) {
trackControls[i] = new ProcTControl(this, tracks[i],
source.getOutputConnector(names[i]));
}
if (!doConfigure2())
return false;
// By default a Processor generates RAW output.
outputContentDes = new ContentDescriptor(ContentDescriptor.RAW);
// The parser disables the hint tracks by default. We'll
// re-enable them.
reenableHintTracks();
return true;
}
/**
* @return true if successful.
*/
protected synchronized boolean doRealize() {
// Reset the target multiplexers
targetMuxes = null;
if (!super.doRealize1())
return false;
// Connect the tracks to a multiplexer, if there's one.
if (targetMux != null && !connectMux()) {
Log.error(realizeError);
Log.error(" Cannot connect the multiplexer\n");
player.processError = genericProcessorError;
return false;
}
if (!super.doRealize2())
return false;
return true;
}
/**
* Return true if the given format is RTP related.
*/
boolean isRTPFormat(Format fmt) {
return fmt != null && fmt.getEncoding() != null &&
fmt.getEncoding().endsWith("rtp") ||
fmt.getEncoding().endsWith("RTP");
}
void reenableHintTracks() {
for (int i = 0; i < trackControls.length; i++) {
if (isRTPFormat(trackControls[i].getOriginalFormat())) {
trackControls[i].setEnabled(true);
break;
}
}
}
BasicMuxModule getMuxModule() {
return muxModule;
}
/**
* Connect the multiplexer.
*/
boolean connectMux() {
/**
* The target Mux has already been determined. We'll just
* hook it up.
*/
BasicTrackControl tcs[] = new BasicTrackControl[trackControls.length];
int total = 0;
Multiplexer mux = (Multiplexer)targetMux.plugin;
for (int i = 0; i < trackControls.length; i++) {
if (trackControls[i].isEnabled()) {
tcs[total++] = trackControls[i];
}
}
try {
mux.setContentDescriptor(outputContentDes);
} catch (Exception e) {
Log.comment("Failed to set the output content descriptor on the multiplexer.");
return false;
}
boolean failed = false;
if (mux.setNumTracks(targetMuxFormats.length) != targetMuxFormats.length) {
Log.comment("Failed to set number of tracks on the multiplexer.");
return false;
}
for (int mf = 0; mf < targetMuxFormats.length; mf++) {
if (targetMuxFormats[mf] == null ||
mux.setInputFormat(targetMuxFormats[mf], mf) == null) {
Log.comment("Failed to set input format on the multiplexer.");
failed = true;
break;
}
}
if (failed)
return false;
if (SimpleGraphBuilder.inspector != null && !SimpleGraphBuilder.inspector.verify(mux, targetMuxFormats))
return false;
//Log.comment("Found multiplexer: " + mux);
InputConnector ic;
BasicMuxModule bmm = new BasicMuxModule(mux, targetMuxFormats);
if (DEBUG) bmm.setJMD(jmd);
String name;
// Make the connections.
for (int j = 0; j < targetMuxFormats.length; j++) {
ic = bmm.getInputConnector(BasicMuxModule.ConnectorNamePrefix + j);
if (ic == null) {
// Something is terribly wrong.
Log.comment("BasicMuxModule: connector mismatched.");
return false;
}
ic.setFormat(targetMuxFormats[j]);
tcs[j].lastOC.setProtocol(ic.getProtocol());
tcs[j].lastOC.connectTo(ic, targetMuxFormats[j]);
}
if (!bmm.doRealize()) {
//Log.comment("Failed to open the multiplexer.");
return false;
}
bmm.setModuleListener(this);
bmm.setController(this);
modules.addElement(bmm);
sinks.addElement(bmm);
muxModule = bmm;
return true;
}
/**
* Search and update the master time base.
*/
protected BasicSinkModule findMasterSink() {
// Obtain a master time base from one of its SinkModules.
if (muxModule != null && muxModule.getClock() != null) {
return muxModule;
}
return super.findMasterSink();
}
String prefetchError = "Failed to prefetch: " + this;
/**
* The stub function to perform the steps to prefetch the controller.
* @return true if successful.
*/
protected synchronized boolean doPrefetch() {
if (prefetched)
return true;
if (!doPrefetch1())
return false;
// Fail if the mux module cannot be prefetched.
if (muxModule != null && !muxModule.doPrefetch()) {
Log.error(prefetchError);
Log.error(" Cannot prefetch the multiplexer: " +
muxModule.getMultiplexer() + "\n");
return false;
}
return doPrefetch2();
}
/**
* Start immediately.
* Invoked from start(tbt) when the scheduled start time is reached.
* Use the public start(tbt) method for the public interface.
* Override this to implement subclass behavior.
*/
protected synchronized void doStart() {
if (started) return;
doStart1();
if (muxModule != null)
muxModule.doStart();
doStart2();
}
/**
* Invoked from stop().
* Override this to implement subclass behavior.
*/
protected synchronized void doStop() {
if (!started) return;
doStop1();
if (muxModule != null)
muxModule.doStop();
doStop2();
}
/**
* Get the track controls.
*/
public TrackControl [] getTrackControls() throws NotConfiguredError {
if (getState() < Configured)
throwError(new NotConfiguredError("getTrackControls " + NOT_CONFIGURED_ERROR));
return trackControls;
}
/**
* Return all the content-types which this Processor's output supports.
*/
public ContentDescriptor[] getSupportedContentDescriptors()
throws NotConfiguredError {
if (getState() < Configured)
throwError(new NotConfiguredError("getSupportedContentDescriptors " +
NOT_CONFIGURED_ERROR));
Vector names = PlugInManager.getPlugInList(null,
null, PlugInManager.MULTIPLEXER);
Vector fmts = new Vector();
Format fs[];
int i, j, k;
boolean duplicate;
for (i = 0; i < names.size(); i++) {
fs = PlugInManager.getSupportedOutputFormats(
(String)names.elementAt(i),
PlugInManager.MULTIPLEXER);
if (fs == null)
continue;
for (j = 0; j < fs.length; j++) {
if (!(fs[j] instanceof ContentDescriptor))
continue;
duplicate = false;
for (k = 0; k < fmts.size(); k++) {
if (fmts.elementAt(k).equals(fs[j])) {
duplicate = true;
break;
}
}
if (!duplicate)
fmts.addElement(fs[j]);
}
}
ContentDescriptor cds[] = new ContentDescriptor[fmts.size()];
for (i = 0; i < fmts.size(); i++)
cds[i] = (ContentDescriptor)fmts.elementAt(i);
return cds;
}
/**
* Set the output content-type.
*/
public ContentDescriptor setContentDescriptor(ContentDescriptor ocd)
throws NotConfiguredError {
if (getState() < Configured)
throwError(new NotConfiguredError("setContentDescriptor " +
NOT_CONFIGURED_ERROR));
if (getState() > Configured)
return null;
if (ocd != null) {
Vector cnames = PlugInManager.getPlugInList(null,
ocd, PlugInManager.MULTIPLEXER);
if (cnames == null || cnames.size() == 0)
return null;
}
outputContentDes = ocd;
return outputContentDes;
}
/**
* Return the output content-type.
*/
public ContentDescriptor getContentDescriptor()
throws NotConfiguredError {
if (getState() < Configured)
throwError(new NotConfiguredError("getContentDescriptor " +
NOT_CONFIGURED_ERROR));
return outputContentDes;
}
/**
* Return the output DataSource of the Processor.
*/
public DataSource getDataOutput() throws NotRealizedError {
if (getState() < Controller.Realized)
throwError(new NotRealizedError("getDataOutput " +
NOT_REALIZED_ERROR));
if (muxModule != null)
return muxModule.getDataOutput();
else
return null;
}
/**
* Report the output bit rate if a mux is used.
*/
protected long getBitRate() {
if (muxModule != null)
return muxModule.getBitsWritten();
else
return source.getBitsRead();
}
protected void resetBitRate() {
if (muxModule != null)
muxModule.resetBitsWritten();
else
source.resetBitsRead();
}
//////////////////////////////////
//
// Flow graph building routines.
//////////////////////////////////
/**
* Get the plugin from a module. For debugging.
*/
protected PlugIn getPlugIn(BasicModule m) {
if (m instanceof BasicMuxModule)
return ((BasicMuxModule)m).getMultiplexer();
return super.getPlugIn(m);
}
//////////////////////////////////
//
// Inner classes
//////////////////////////////////
class ProcTControl extends BasicTrackControl implements Owned {
// Customized options.
protected Format formatWanted = null;
protected Codec codecChainWanted[] = null;
protected Renderer rendererWanted = null;
protected ProcGraphBuilder gb;
protected Format supportedFormats[] = null;
public ProcTControl(ProcessEngine engine, Track track, OutputConnector oc) {
super(engine, track, oc);
}
public Object getOwner() {
return player;
}
public Format getFormat() {
return (formatWanted == null ? track.getFormat() : formatWanted);
}
public Format [] getSupportedFormats() {
// First check to see if we have already computed the supported
// formats for the track format in the past. If not, then we'll
// compute the supported formats using the graph builder.
if (supportedFormats == null &&
(supportedFormats = Resource.getDB(track.getFormat())) == null) {
if (gb == null)
gb = new ProcGraphBuilder((ProcessEngine)engine);
else
gb.reset();
supportedFormats = gb.getSupportedOutputFormats(track.getFormat());
supportedFormats = Resource.putDB(track.getFormat(),
supportedFormats);
needSavingDB = true;
}
// If an output content descriptor is given, we'll need to
// verify if the mux support individual inputs.
if (outputContentDes != null) {
return verifyMuxInputs(outputContentDes, supportedFormats);
} else
return supportedFormats;
}
/**
* If a multiplexer (ContentDescriptor) is specified, we'll verify
* if the multiplexer supports the given input.
*/
Format [] verifyMuxInputs(ContentDescriptor cd, Format inputs[]) {
if (cd == null || cd.getEncoding() == ContentDescriptor.RAW)
return inputs;
// Instantiate all the multiplexers that support the
// given output content descriptor.
Vector cnames = PlugInManager.getPlugInList(null,
cd, PlugInManager.MULTIPLEXER);
if (cnames == null || cnames.size() == 0)
return new Format[0];
Multiplexer mux[] = new Multiplexer[cnames.size()];
int total = 0;
Multiplexer m;
for (int i = 0; i < cnames.size(); i++) {
if ((m = (Multiplexer)SimpleGraphBuilder.createPlugIn((String)cnames.elementAt(i),
PlugInManager.MULTIPLEXER)) != null) {
try {
m.setContentDescriptor(outputContentDes);
} catch (Exception e) {
continue;
}
if (m.setNumTracks(1) < 1)
continue;
mux[total++] = m;
}
}
// Query the multiplexers to see if they support the input
// format.
Format tmp[] = new Format[inputs.length];
Format fmt;
int vtotal = 0;
for (int i = 0; i < inputs.length; i++) {
if (total == 1) {
// Let's do some loop unrolling.
if ((fmt = mux[0].setInputFormat(inputs[i], 0)) != null)
tmp[vtotal++] = fmt;
} else {
for (int j = 0; j < total; j++) {
if ((fmt = mux[j].setInputFormat(inputs[i], 0)) != null) {
tmp[vtotal++] = fmt;
break;
}
}
}
}
Format verified[] = new Format[vtotal];
System.arraycopy(tmp, 0, verified, 0, vtotal);
return verified;
}
public Format setFormat(Format format) {
if (engine.getState() > Configured)
return getFormat();
/*
Force a new size for testing.
if (format instanceof VideoFormat) {
VideoFormat newf = new VideoFormat(null,
new Dimension(100, 100),
Format.NOT_SPECIFIED,
null,
Format.NOT_SPECIFIED);
format = newf.intersects(format);
}
*/
if (format != null && !format.matches(track.getFormat())) {
formatWanted = checkSize(format);
} else
return format;
/*
Format fmts[] = getSupportedFormats();
boolean good = false;
for (int i = 0; i < fmts.length; i++) {
if (formatWanted.matches(fmts[i])) {
System.err.println("It's a good format");
good = true;
}
}
if (!good) {
System.err.println("Format set: " + formatWanted);
System.err.println("It's a bad format");
}
*/
return formatWanted;
}
/**
* Check if the video size of the given format is valid.
* If not, return a format with the correct size.
*/
private Format checkSize(Format fmt) {
if (!(fmt instanceof VideoFormat))
return fmt;
VideoFormat vfmt = (VideoFormat)fmt;
Dimension size = ((VideoFormat)fmt).getSize();
if (size == null) {
Format ofmt = getOriginalFormat();
if (ofmt == null || (size = ((VideoFormat)ofmt).getSize()) == null)
return fmt;
}
int w = size.width, h = size.height;
if (fmt.matches(new VideoFormat(VideoFormat.JPEG_RTP)) ||
fmt.matches(new VideoFormat(VideoFormat.JPEG))) {
// JPEG sizes should be a multiple of 8.
if (size.width % 8 != 0)
w = size.width / 8 * 8;
if (size.height % 8 != 0)
h = size.height / 8 * 8;
if (w == 0 || h == 0) {
w = size.width;
h = size.height;
}
} else if (fmt.matches(new VideoFormat(VideoFormat.H263_RTP)) ||
fmt.matches(new VideoFormat(VideoFormat.H263_1998_RTP)) ||
fmt.matches(new VideoFormat(VideoFormat.H263))) {
// H.263 sizes are pretty rigid.
if (size.width >= 352) {
w = 352;
h = 288;
} else if (size.width >= 160) {
w = 176;
h = 144;
} else {
w = 128;
h = 96;
}
}
if (w != size.width || h != size.height) {
Log.comment("setFormat: " + fmt.getEncoding() +
": video aspect ratio mismatched.");
Log.comment(" Scaled from " + size.width + "x" +
size.height + " to " + w + "x" + h + ".\n");
fmt = (new VideoFormat(null,
new Dimension(w, h),
Format.NOT_SPECIFIED,
null,
Format.NOT_SPECIFIED)).intersects(fmt);
}
return fmt;
}
/**
* Top level routine to build a single track.
*/
public boolean buildTrack(int trackID, int numTracks) {
if (gb == null)
gb = new ProcGraphBuilder((ProcessEngine)engine);
else
gb.reset();
boolean rtn = gb.buildGraph(this, trackID, numTracks);
// dispose the old GraphBuilder after building a track.
// The cache is not valid anymore.
gb = null;
return rtn;
}
/**
* Returns true if this track holds the master time base.
*/
public boolean isTimeBase() {
for (int j = 0; j < modules.size(); j++) {
if (modules.elementAt(j) == masterSink)
return true;
}
return false;
}
public void setCodecChain(Codec codec[])
throws NotConfiguredError, UnsupportedPlugInException {
if (engine.getState() > Configured)
throwError(new NotConfiguredError(connectErr));
if (codec.length < 1)
throw new UnsupportedPlugInException("No codec specified in the array.");
codecChainWanted = new Codec[codec.length];
for (int i = 0; i < codec.length; i++)
codecChainWanted[i] = codec[i];
}
public void setRenderer(Renderer renderer)
throws NotConfiguredError {
if (engine.getState() > Configured)
throwError(new NotConfiguredError(connectErr));
this.rendererWanted = renderer;
if (renderer instanceof SlowPlugIn)
((SlowPlugIn)renderer).forceToUse();
}
public boolean isCustomized() {
return formatWanted != null ||
codecChainWanted != null || rendererWanted != null;
}
public void prError() {
if (!isCustomized()) {
super.prError();
return;
}
Log.error(" Cannot build a flow graph with the customized options:");
if (formatWanted != null) {
Log.error(" Unable to transcode format: " +
getOriginalFormat());
Log.error(" to: " + getFormat());
if (outputContentDes != null)
Log.error(" outputting to: " + outputContentDes);
}
if (codecChainWanted != null) {
Log.error(" Unable to add customed codecs: ");
for (int i = 0; i < codecChainWanted.length; i++)
Log.error(" " + codecChainWanted[i]);
}
if (rendererWanted != null) {
Log.error(" Unable to add customed renderer: " +
rendererWanted);
}
Log.write("\n");
}
protected ProgressControl progressControl() {
return progressControl;
}
protected FrameRateControl frameRateControl() {
this.muxModule = getMuxModule();
return frameRateControl;
}
}
/**
* This is the Graph builder to generate the data flow graph for
* the media engine. It extends from the SimpleGraphBuilder to
* handle multiplexers, customized output formats, codecs and renderers.
*
* It contains 3 parts:
* 1) Routines to search for all the supported output formats;
* 2) Routines to build a default flow graph -- buildGraph;
* 3) Routines to build a custom flow graph -- buildCustomGraph.
*
* A default graph is such that no customised option is specified on
* the TrackControl.
*
*/
// The list of target multiplexers.
protected Vector targetMuxNames = null;
protected GraphNode targetMuxes[] = null;
protected GraphNode targetMux = null;
protected Format targetMuxFormats[] = null;
class ProcGraphBuilder extends SimpleGraphBuilder {
protected ProcessEngine engine;
protected Format targetFormat;
protected int trackID = 0;
protected int numTracks = 1;
protected int nodesVisited = 0;
ProcGraphBuilder(ProcessEngine engine) {
this.engine = engine;
}
/**
* Given an input format, find out all the supported output formats
* by searching through the node graph.
*/
public Format [] getSupportedOutputFormats(Format input) {
long formatsTime = System.currentTimeMillis();
Vector collected = new Vector();
Vector candidates = new Vector();
GraphNode node = new GraphNode(null, (PlugIn)null, input, null, 0);
candidates.addElement(node);
collected.addElement(input);
nodesVisited++;
while (!candidates.isEmpty())
doGetSupportedOutputFormats(candidates, collected);
// Convert the resulting vector into an array.
Format all[] = new Format[collected.size()];
// The following bit of code is a hack to put MPEG/RTP the
// the end of the supported list since it's the least robust
// RTP codecs.
int front = 0, back = all.length - 1;
Format mpegAudio = new AudioFormat(AudioFormat.MPEG_RTP);
boolean mpegInput =
(new AudioFormat(AudioFormat.MPEG)).matches(input) ||
(new AudioFormat(AudioFormat.MPEGLAYER3)).matches(input) ||
(new VideoFormat(VideoFormat.MPEG)).matches(input);
for (int i = 0; i < all.length; i++) {
Object obj = collected.elementAt(i);
if (!mpegInput && mpegAudio.matches((Format)obj))
all[back--] = (Format)obj;
else
all[front++] = (Format)obj;
}
Log.comment("Getting the supported output formats for:");
Log.comment(" " + input);
Log.comment(" # of nodes visited: " + nodesVisited);
Log.comment(" # of formats supported: " + all.length + "\n");
engine.profile("getSupportedOutputFormats", formatsTime);
return all;
}
/**
* Collect the supported output formats from the list of node
* candidates.
*/
void doGetSupportedOutputFormats(Vector candidates, Vector collected) {
GraphNode node = (GraphNode)candidates.firstElement();
candidates.removeElementAt(0);
if (node.input == null &&
(node.plugin == null || !(node.plugin instanceof Codec))) {
// shouldn't happen!
Log.error("Internal error: doGetSupportedOutputFormats");
return;
}
if (node.plugin != null) {
// It may not seem necessary to do this since the
// previous round has already verified the input.
// But since the same plugin could have a different
// input called on it on previous rounds, it needs to
// be resetted to the designated input. This has
// caused a bug in failing setOutputFormat for some
// codecs.
if (verifyInput(node.plugin, node.input) == null)
return;
}
Format input, outs[];
if (node.plugin != null) {
outs = node.getSupportedOutputs(node.input);
if (outs == null || outs.length == 0)
return;
// Add the output formats to the collected list and
// check for duplication.
boolean found;
int j, k, size;
Format other;
for (j = 0; j < outs.length; j++) {
size = collected.size();
found = false;
for (k = 0; k < size; k++) {
other = (Format)collected.elementAt(k);
if (other == outs[j] || other.equals(outs[j])) {
found = true;
break;
}
}
if (!found)
collected.addElement(outs[j]);
}
input = node.input;
} else {
outs = new Format[1];
outs[0] = node.input;
input = null;
}
// Don't go deeper than allowed.
if (node.level >= STAGES)
return;
GraphNode gn, n;
Format fmt, ins[];
for (int i = 0; i < outs.length; i++) {
// Ignore outputs that are the same as the input.
if (input != null && input.equals(outs[i]))
continue;
// Verify the output format.
if (node.plugin != null &&
verifyOutput(node.plugin, outs[i]) == null) {
continue;
}
Vector cnames = PlugInManager.getPlugInList(outs[i],
null, PlugInManager.CODEC);
if (cnames == null || cnames.size() == 0)
continue;
for (int j = 0; j < cnames.size(); j++) {
// Instantiate and verify the codec.
if ((gn = getPlugInNode((String)cnames.elementAt(j),
PlugInManager.CODEC, plugIns)) == null)
continue;
// Check to see if the particular input/plugin combination
// has already been attempted. If so, we don't need to
// do it again.
if (gn.checkAttempted(outs[i]))
continue;
ins = gn.getSupportedInputs();
if ((fmt = matches(outs[i], ins, null, gn.plugin)) == null)
continue;
n = new GraphNode(gn, fmt, node, node.level+1);
candidates.addElement(n);
nodesVisited++;
}
}
}
boolean buildGraph(BasicTrackControl tc, int trackID, int numTracks) {
this.trackID = trackID;
this.numTracks = numTracks;
// If the custom options are specified, we'll use the
// different routine that's specialized for this.
if (tc.isCustomized()) {
Log.comment("Input: " + tc.getOriginalFormat());
return buildCustomGraph((ProcTControl)tc);
}
return super.buildGraph(tc);
}
protected GraphNode buildTrackFromGraph(BasicTrackControl tc, GraphNode node) {
return engine.buildTrackFromGraph((ProcTControl)tc, node);
}
/**
* This defines when the search ends. The "targets" array defines
* the nodes that are to be the "end points" (leaf nodes) of the
* graph.
* With the default graph builder, the targets array contains the
* list of sinks that can potentially support the input format.
*/
GraphNode findTarget(GraphNode node) {
Format outs[];
// Expand the outputs of the next node.
if (node.plugin == null) {
outs = new Format[1];
outs[0] = node.input;
} else {
if (node.output != null) {
outs = new Format[1];
outs[0] = node.output;
} else {
outs = node.getSupportedOutputs(node.input);
if (outs == null || outs.length == 0) {
//Log.write("Weird! The given plugin does not support any output.");
return null;
}
}
}
// If there's a constraint format, check for that first.
if (targetFormat != null) {
Format matched = null;
if ((matched = matches(outs, targetFormat, node.plugin, null)) == null)
return null;
if (inspector != null &&
!inspector.verify((Codec)node.plugin, node.input, matched))
return null;
// If there's no more targets to match, we are done.
if (targetPlugins == null && targetMuxes == null) {
node.output = matched;
return node;
}
// The matching target format is chosen.
outs = new Format[1];
outs[0] = matched;
}
GraphNode n;
// Check for the list of predefined targets.
if (targetPlugins != null) {
if ((n = verifyTargetPlugins(node, outs)) != null)
return n;
else
return null;
}
// Check for the list of predefined muxes.
if (targetMuxes != null && (n = verifyTargetMuxes(node, outs)) != null)
return n;
return null;
}
/**
* If a multiplexer is specified, check for that.
*/
GraphNode verifyTargetMuxes(GraphNode node, Format outs[]) {
Multiplexer mux;
GraphNode gn;
Format fmt;
for (int i = 0; i < targetMuxes.length; i++) {
if ((gn = targetMuxes[i]) == null) {
String name = (String)targetMuxNames.elementAt(i);
if (name == null)
continue;
// We'll want to instantiate it to get more info from it.
if ((gn = getPlugInNode(name, PlugInManager.MULTIPLEXER,
plugIns)) == null) {
targetMuxNames.setElementAt(null, i);
continue;
}
mux = (Multiplexer)gn.plugin;
if (mux.setContentDescriptor(outputContentDes) == null) {
targetMuxNames.setElementAt(null, i);
continue;
}
if (mux.setNumTracks(numTracks) != numTracks) {
targetMuxNames.setElementAt(null, i);
continue;
}
targetMuxes[i] = gn;
}
if (targetMux != null && gn != targetMux)
continue;
for (int j = 0; j < outs.length; j++) {
if ((fmt = ((Multiplexer)gn.plugin).setInputFormat(outs[j],
trackID)) == null)
continue;
// found the target.
if (inspector != null) {
if (node.plugin != null &&
!inspector.verify((Codec)node.plugin, node.input, fmt))
continue;
}
targetMux = gn;
targetMuxFormats[trackID] = fmt;
node.output = fmt;
return node;
}
}
return null;
}
/**
* Set the default targets, which are the renderers.
*/
boolean setDefaultTargets(Format in) {
// If there's an output content descriptor specified,
// The targets will be a list of multiplexers.
if (outputContentDes != null)
return setDefaultTargetMux();
else
return setDefaultTargetRenderer(in);
}
boolean setDefaultTargetRenderer(Format in) {
if (!super.setDefaultTargetRenderer(in))
return false;
targetMuxes = null;
return true;
}
boolean setDefaultTargetMux() {
// If the target muxes are already defined, we don't need
// to do that again.
if (targetMuxes != null)
return true;
Log.comment("An output content type is specified: " + outputContentDes);
targetMuxNames = PlugInManager.getPlugInList(null,
outputContentDes, PlugInManager.MULTIPLEXER);
if (targetMuxNames == null || targetMuxNames.size() == 0) {
Log.error("No multiplexer is found for that content type: " +
outputContentDes);
return false;
}
targetMuxes = new GraphNode[targetMuxNames.size()];
targetMux = null;
targetMuxFormats = new Format[numTracks];
// The regular targets will not be used.
targetPluginNames = null;
targetPlugins = null;
return true;
}
/**
* Set the target to a custom plugin specified.
*/
void setTargetPlugin(PlugIn p, int type) {
targetPlugins = new GraphNode[1];
targetPlugins[0] = new GraphNode(p, null, null, 0);
targetPlugins[0].custom = true;
targetPlugins[0].type = type;
}
/******************************************
*
* Routines for building custom graphs
*
******************************************/
Codec codecs[] = null;
Renderer rend = null;
Format format = null;
boolean buildCustomGraph(ProcTControl tc) {
this.codecs = tc.codecChainWanted;
this.rend = tc.rendererWanted;
this.format = tc.formatWanted;
if (format instanceof VideoFormat &&
tc.getOriginalFormat() instanceof VideoFormat) {
Dimension s1 = ((VideoFormat)tc.getOriginalFormat()).getSize();
Dimension s2 = ((VideoFormat)format).getSize();
if (s1 != null && s2 != null && !s1.equals(s2)) {
// The video needs to be resized.
// We'll instantiate the video scaler then
// insert it into the flow graph.
RGBScaler scaler = new RGBScaler(s2);
if (codecs == null || codecs.length == 0) {
codecs = new Codec[1];
codecs[0] = scaler;
} else {
// There are some custom codecs specified.
// We'll use some simple heuristics to determine
// where to insert the scaler.
codecs = new Codec[tc.codecChainWanted.length + 1];
int i;
if (!isRawVideo(format)) {
// The destination format is not a raw format.
// we'll insert the scaler at the front.
codecs[0] = scaler;
i = 1;
} else {
codecs[tc.codecChainWanted.length] = scaler;
i = 0;
}
for (int j = 0; j < tc.codecChainWanted.length; j++)
codecs[i++] = tc.codecChainWanted[j];
}
}
}
GraphNode node, failed;
return ((node = buildCustomGraph(tc.getOriginalFormat())) != null) &&
((failed = buildTrackFromGraph(tc, node)) == null);
}
/**
* Overrides GraphBuider's buildGraph method.
* The major difference is, it pay attentions to the effects,
* codecs, renderers specified.
*/
GraphNode buildCustomGraph(Format in) {
Vector candidates = new Vector();
GraphNode node, n = null;
Format fmt, fmts[];
// root.
node = new GraphNode(null, (PlugIn)null, in, null, 0);
candidates.addElement(node);
Log.comment("Custom options specified.");
indent = 1;
Log.setIndent(indent);
// Handle custom codec chain.
if (codecs != null) {
resetTargets();
for (int i = 0; i < codecs.length; i++) {
if (codecs[i] == null)
continue;
Log.comment("A custom codec is specified: " + codecs[i]);
// Set the custom target to be the next codec specified.
setTargetPlugin(codecs[i], PlugInManager.CODEC);
if ((node = buildGraph(candidates)) == null) {
Log.error("The input format is not compatible with the given codec plugin: " + codecs[i]);
indent = 0;
Log.setIndent(indent);
return null;
}
node.level = 0;
candidates = new Vector();
candidates.addElement(node);
}
}
if (outputContentDes != null) {
resetTargets();
// Set the target format.
if (format != null) {
targetFormat = format;
Log.comment("An output format is specified: " + format);
}
// A mux is specified.
if (!setDefaultTargetMux())
return null;
if ((node = buildGraph(candidates)) == null) {
Log.error("Failed to build a graph for the given custom options.");
indent = 0;
Log.setIndent(indent);
return null;
}
} else {
if (format != null) {
// A target format is set. First find a route to
// to transcode to the target format.
resetTargets();
targetFormat = format;
Log.comment("An output format is specified: " + format);
if ((node = buildGraph(candidates)) == null) {
Log.error("The input format cannot be transcoded to the specified target format.");
indent = 0;
Log.setIndent(indent);
return null;
}
node.level = 0;
candidates = new Vector();
candidates.addElement(node);
targetFormat = null;
}
// Connect the rest of the graph to a renderer.
if (rend != null) {
// Handle custom renderer.
Log.comment("A custom renderer is specified: " + rend);
// Set the custom target to be the renderer specified.
setTargetPlugin(rend, PlugInManager.RENDERER);
if ((node = buildGraph(candidates)) == null) {
if (format != null)
Log.error("The customed transocoded format is not compatible with the given renderer plugin: " + rend);
else
Log.error("The input format is not compatible with the given renderer plugin: " + rend);
indent = 0;
Log.setIndent(indent);
return null;
}
} else {
// Handle the default renderers.
if (!setDefaultTargetRenderer(format == null ? in : format))
return null;
if ((node = buildGraph(candidates)) == null) {
if (format != null)
Log.error("Failed to find a renderer that supports the customed transcoded format.");
else
Log.error("Failed to build a graph to render the input format with the given custom options.");
indent = 0;
Log.setIndent(indent);
return null;
}
}
}
indent = 0;
Log.setIndent(indent);
return node;
}
public void reset() {
super.reset();
resetTargets();
}
/**
* Reset all the targets.
*/
void resetTargets() {
targetFormat = null;
targetPlugins = null;
}
}
}