AudioTrackpublic class AudioTrack extends Object implements Track| FOBS Java CrossPlatform JMF PlugIn
Copyright (c) 2004 Omnividea Multimedia S.L
Coded by Jose San Pedro Wandelmer
This file is part of FOBS.
FOBS 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; either version 2.1
of the License, or (at your option) any later version.
FOBS 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 FOBS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| Fields Summary |
|---|
| private AudioFormat | outFormat | | private boolean | enabled | | private Time | startTime | | private Time | duration | | private Parser | parser | | private double | frameRate | | private long | lts | | private long | lt |
| Constructors Summary |
|---|
public AudioTrack(double sampleRate, int channelNumber, double frameRate, Time duration, Time startTime, Parser parser)
int frameSizeInBits = channelNumber * 16;
int avgBytesPerSec = (int)(channelNumber * 2 * sampleRate);
/* outFormat = new WavAudioFormat(AudioFormat.LINEAR,
sampleRate,
16,
channelNumber,
frameSizeInBits,
avgBytesPerSec,
AudioFormat.BIG_ENDIAN,
AudioFormat.SIGNED,
Format.NOT_SPECIFIED, // No FRAME_RATE specified
Format.byteArray,
new byte[0]);*/
outFormat = new WavAudioFormat("FFMPEG_AUDIO",
sampleRate,
16,
channelNumber,
frameSizeInBits,
avgBytesPerSec,
parser.isBigEndian()?AudioFormat.BIG_ENDIAN:AudioFormat.LITTLE_ENDIAN,
AudioFormat.SIGNED,
Format.NOT_SPECIFIED, // No FRAME_RATE specified
Format.byteArray,
new byte[0]);
this.duration = duration;
enabled = true;
this.parser = parser;
this.frameRate = frameRate;
this.startTime = startTime;
|
| Methods Summary |
|---|
| public javax.media.Time | getDuration()return parser.getDuration();
| | public javax.media.Format | getFormat()
return outFormat;
| | public javax.media.Time | getStartTime()return startTime;
| | public boolean | isEnabled()return enabled;
| | public javax.media.Time | mapFrameToTime(int frameNumber)
return null;
| | public int | mapTimeToFrame(javax.media.Time t)
return 0;
| | public void | readFrame(javax.media.Buffer buffer)
if (buffer == null)
return;
if (!isEnabled()) {
buffer.setDiscard(true);
return;
}
buffer.setFormat(outFormat);
Object obj = buffer.getData();
byte[] data;
long location;
int needDataSize;
needDataSize = outFormat.getChannels() * outFormat.getSampleSizeInBits() * 4000;
if ( (obj == null) ||
(! (obj instanceof int[]) ) ||
( ((byte[])obj).length < needDataSize) ) {
data = new byte[needDataSize];
buffer.setData(data);
} else {
data = (byte[]) obj;
}
if(parser.getNextAudioFrame(data, 0, needDataSize))
{
int size = parser.getAudioSampleNumber();
buffer.setOffset(0);
buffer.setLength(size);
//buffer.setDuration((long)(size / outFormat.getSampleSizeInBits() * 8 / outFormat.getSampleRate() / outFormat.getChannels() * 1000000000));
double audioTime = parser.getAudioSampleTimestamp();
long ts = (long)(audioTime*1000000000);
buffer.setTimeStamp(ts);
long tmp = System.currentTimeMillis();
//System.out.println("ATS: "+ts+" Delta:"+(ts-lts)/1000000+" T:"+(tmp-lt));
lts = ts;
lt = tmp;
}
else
{
buffer.setLength(0);
buffer.setEOM(true);
}
| | public void | setEnabled(boolean t)enabled = t;
| | public void | setTrackListener(javax.media.TrackListener listener)
|
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