/**
* Try to match all the tracks and find common formats to concatenate the tracks. A database of
* results will be generated.
*/
public boolean matchTracks(ProcInfo pInfo[], ContentDescriptor cd) {
TrackControl tcs[];
// Vector<String> aTracks;
// Vector<String> vTracks;
int aIdx, vIdx;
int i, j, type;
TrackInfo tInfo;
// Build the ProcInfo data structure for each processor.
// Sparate out the audio from video tracks.
for (i = 0; i < pInfo.length; i++) {
if (!waitForState(pInfo[i].p, Processor.Configured)) {
System.err.println("- Failed to configure the processor.");
return false;
}
tcs = pInfo[i].p.getTrackControls();
pInfo[i].tracksByType = new TrackInfo[MEDIA_TYPES][];
for (type = AUDIO; type < MEDIA_TYPES; type++) {
pInfo[i].tracksByType[type] = new TrackInfo[tcs.length];
}
pInfo[i].numTracksByType = new int[MEDIA_TYPES];
aIdx = vIdx = 0;
// Separate the audio and video tracks.
for (j = 0; j < tcs.length; j++) {
if (tcs[j].getFormat() instanceof AudioFormat) {
tInfo = new TrackInfo();
tInfo.idx = j;
tInfo.tc = tcs[j];
pInfo[i].tracksByType[AUDIO][aIdx++] = tInfo;
} else if (tcs[j].getFormat() instanceof VideoFormat) {
tInfo = new TrackInfo();
tInfo.idx = j;
tInfo.tc = tcs[j];
pInfo[i].tracksByType[VIDEO][vIdx++] = tInfo;
}
}
pInfo[i].numTracksByType[AUDIO] = aIdx;
pInfo[i].numTracksByType[VIDEO] = vIdx;
pInfo[i].p.setContentDescriptor(cd);
}
// Different movies has different number of tracks. Obviously,
// we cannot concatenate all the tracks of 3-track movie with a
// 2-track one. We'll concatenate up to the smallest # of tracks
// of all the movies. We'll also need to disable the unused tracks.
int total[] = new int[MEDIA_TYPES];
for (type = AUDIO; type < MEDIA_TYPES; type++) {
total[type] = pInfo[0].numTracksByType[type];
}
for (i = 1; i < pInfo.length; i++) {
for (type = AUDIO; type < MEDIA_TYPES; type++) {
if (pInfo[i].numTracksByType[type] < total[type])
total[type] = pInfo[i].numTracksByType[type];
}
}
if (total[AUDIO] < 1 && total[VIDEO] < 1) {
System.err.println("There is no audio or video tracks to concatenate.");
return false;
}
totalTracks = 0;
for (type = AUDIO; type < MEDIA_TYPES; type++) totalTracks += total[type];
// Disable all the unused tracks.
for (i = 0; i < pInfo.length; i++) {
for (type = AUDIO; type < MEDIA_TYPES; type++) {
for (j = total[type]; j < pInfo[i].numTracksByType[type]; j++) {
tInfo = pInfo[i].tracksByType[type][j];
disableTrack(pInfo[i], tInfo);
System.err.println(
"- Disable the following track since the other input media do not have a matching type.");
System.err.println(" " + tInfo.tc.getFormat());
}
pInfo[i].numTracksByType[type] = total[type];
}
}
// Try to find common formats to concatenate the tracks.
// Deal with the tracks by type.
for (type = AUDIO; type < MEDIA_TYPES; type++) {
for (i = 0; i < total[type]; i++) {
if (!tryMatch(pInfo, type, i)) {
System.err.println(
"- Cannot transcode the tracks to a common format for concatenation! Sorry.");
return false;
}
}
}
return true;
}
