/*
* @(#)MpegParser.java 1.50 01/02/27
*
* Licensed Materials - Property of IBM
* "Restricted Materials of IBM"
* 5648-B81
* (c) Copyright IBM Corporation 1998,1999 All Rights Reserved
* US Government Users Restricted Rights - Use, duplication or
* disclosure restricted by GSA ADP Schedule Contract with
* IBM Corporation.
*
*/
package com.ibm.media.parser.video;
import java.security.*;
import java.lang.reflect.Method;
import java.lang.reflect.Constructor;
import java.io.OutputStream; //EE temporary!
import java.io.FileOutputStream; //EE temporary!
import java.io.IOException;
import java.awt.Dimension;
import javax.media.*;
import javax.media.protocol.DataSource;
import javax.media.protocol.SourceStream;
import javax.media.protocol.PullSourceStream;
import javax.media.protocol.Seekable;
import javax.media.protocol.Positionable;
import javax.media.Format;
import javax.media.protocol.ContentDescriptor;
import javax.media.protocol.FileTypeDescriptor;
import javax.media.format.AudioFormat;
import javax.media.format.VideoFormat;
import com.sun.media.format.WavAudioFormat;
import com.sun.media.parser.BasicPullParser;
import com.sun.media.parser.BasicTrack;
import com.sun.media.util.jdk12;
import com.sun.media.util.LoopThread;
import com.sun.media.JMFSecurity;
import com.sun.media.JMFSecurityManager;
import com.sun.media.CircularBuffer;
import com.sun.media.Log;
import com.ms.security.PermissionID;
import com.ms.security.PolicyEngine;
public class MpegParser extends BasicPullParser {
/*
* Temporary fields
*/
/* temporary for saving in output files */
boolean saveOutputFlag = false; //true;
String AoutName = "Audio.mpg";
String VoutName = "Video.mpg";
FileOutputStream aout;
FileOutputStream vout;
/* temporary for throwing all data away */
boolean throwOutputFlag = false; /// true;
/* As long as MPEG audio decoder doesn't exist, the audio track should be
* hidden inside the parser. That's mean that only video tracks are output
* of getTracks, and once in a while the audio buffer should be just flushed.
* There is a similar option to ignore the video data.
*/
boolean hideAudioTracks = false; //true;
boolean hideVideoTracks = false;
/*
* Constants definitions for the MPEG-1 system layer splitter
*/
static final long NO_PTS_VAL = -3333333; /* an arbitray value */
private static final float EPSILON_PTS = 45000; /* which is 0.5 sec in PTS units */
private static final float EPSILON_NS = 500000000; /* which is 0.5 sec in nanoseconds */
/* The nature of MPEG video stream is that I frames usually apears every
* 15 frames. In setPosition, we want to have an I frame before the time
* being setted. This is why we will try to look for time stamp of 0.5 seconds
* earlier (in common frame rates of 24-30 frames per second, 0.5 second will
* probably include an I frame).
*/
private static final long PRE_ROLLING_DELTA_NS = 500000000; /* which is 0.5 sec in nano-seconds */
/* packet/track/stream type */
private static final byte UNKNOWN_TYPE = 0;
private static final byte AUDIO_TYPE = 1;
private static final byte VIDEO_TYPE = 2;
private static final byte SYS11172_TYPE = 3;
/* streams buffer size */
private static final int AUDIO_TRACK_BUF_SIZE = 100000;
private static final int VIDEO_TRACK_BUF_SIZE = 200000;
/* codes definition */
private static final int PACK_START_CODE = 0x000001BA;
private static final int SYSTEM_HEADER_START_CODE = 0x000001BB;
private static final int PACKET_START_CODE_24 = 0x000001; /* 24 bits of 0x000001 */
private static final int END_CODE = 0x000001B9;
private static final int MIN_STREAM_CODE = 0x00BC;
private static final int MAX_STREAM_CODE = 0x00FF;
private static final int PRIVATE_STREAM2_CODE = 0x00BF;
private static final int VIDEO_PICTURE_START_CODE = 0x00000100;
private static final int VIDEO_SEQUENCE_HEADER_CODE = 0x000001B3;
private static final int VIDEO_GROUP_START_CODE = 0x000001B8;
/* streams IDs */
private static final int MAX_AUDIO_STREAMS = 32;
private static final int MAX_VIDEO_STREAMS = 16;
private static final int MAX_NUM_STREAMS = 48;
private static final int MIN_AUDIO_ID = 0;
private static final int MAX_AUDIO_ID = 31;
private static final int MIN_VIDEO_ID = 32;
private static final int MAX_VIDEO_ID = 47;
private static int MAX_TRACKS_SUPPORTED = MAX_NUM_STREAMS;
/*
* Fields
*/
private static ContentDescriptor[] supportedFormat =
new ContentDescriptor[] { new ContentDescriptor("audio.mpeg"),
new ContentDescriptor(FileTypeDescriptor.MPEG),
new ContentDescriptor(FileTypeDescriptor.MPEG_AUDIO)};
private PullSourceStream stream = null;
private TrackList[] trackList = new TrackList[MAX_TRACKS_SUPPORTED];
private Track[] tracks = null;
private Track[] videoTracks = null; /// temporary, for hiding audio tracks
private Track[] audioTracks = null; /// temporary, for hiding video tracks
private int videoCount = 0; /// temporary, for hiding audio tracks
private int audioCount = 0; /// temporary, for hiding video tracks
private int numSupportedTracks = 0;
private int numTracks = 0;
private int numPackets = 0;
private int initTmpBufLen; // a buffer used in the initation phase
private byte[] initTmpStreamBuf;
private byte streamType = UNKNOWN_TYPE; // stream can be of: Unknown/Audio/Video/System11172 type
private long streamContentLength = 0L;
private SystemHeader sysHeader = new SystemHeader();
private boolean sysHeaderSeen = false;
boolean EOMflag = false;
boolean parserErrorFlag = false;
private boolean durationInitialized = false;
private boolean sysPausedFlag = false;
private boolean seekableStreamFlag = false; // can be seeked at least to the beginning
private boolean randomAccessStreamFlag = true; // can be seeked to any location
/* some JMFSecurity stuff */
private static JMFSecurity jmfSecurity = null;
private static boolean securityPrivelege=false;
private Method mSecurity[] = new Method[1];
private Class clSecurity[] = new Class[1];
private Object argsSecurity[][] = new Object[1][0];
private long startLocation = 0;
static {
try {
jmfSecurity = JMFSecurityManager.getJMFSecurity();
securityPrivelege = true;
} catch (SecurityException e) {
}
}
/* Time is managed in few sets of variables (for different types of media),
* each has it's own units:
* durationNs - in nanoseconds
* PTS - is 33 bits of the presentation time stamp value.
* Upon the MPEG standard, it probably should be unsigned,
* but since there are movies with negetive values, we will
* treat the time stamp as SIGNED !!
* AV...Ns - time for Audio/Video only streams, in nanoseconds
* Important: every public method who return time, calculate the time
* relative to the startPTS !
*/
/** content duration in NS **/
private Time durationNs = Duration.DURATION_UNKNOWN;
/** last seek time **/
private Time lastSetPositionTime = new Time(0L);
/** first content PTS **/
private long startPTS = NO_PTS_VAL;
/** last encountered content PTS **/
long currentPTS = NO_PTS_VAL;
/** end of content PTS **/
long endPTS = NO_PTS_VAL;
private long AVstartTimeNs = 0L;
private long AVcurrentTimeNs = 0L;
private long AVlastTimeNs = 0L;
private long lastAudioNs = 0L;
/// private long AVtotalBytesRead = 0L; /* counter, in byte units */
/* Sub-thread for filling the tracks inner buffers with data
* (only for system-type bitstream)
*/
private MpegBufferThread mpThread = null;
static int[][][] bitrates = {
{ // MPEG-2.5
{ -1 }, // reserved
{ 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 },
// Layer III
{ 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 },
// Layer II
{ 0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, -1 }
// Layer I
},
{ // reserved
{ -1 }
},
{ // MPEG-2
{ -1 }, // reserved
{ 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 },
// Layer III
{ 0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1 },
// Layer II
{ 0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, -1 }
// Layer I
},
{ // MPEG-1
{ -1 }, // reserved
{ 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, -1
}, // Layer III
{ 0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, -1
}, // Layer II
{ 0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, -1
} // Layer I
}
};
static int[][] samplerates = {
{ 11025, 12000, 8000, -1 }, // MPEG-2.5
{ -1 }, // reserved
{ 22050, 24000, 16000, -1 }, // MPEG-2
{ 44100, 48000, 32000, -1 } // MPEG-1
};
public void setSource(DataSource source)
throws IOException, IncompatibleSourceException {
super.setSource(source);
stream = (PullSourceStream) streams[0];
streamContentLength = stream.getContentLength(); // can be LENGTH_UNKNOWN
seekableStreamFlag = (streams[0] instanceof Seekable);
if (!seekableStreamFlag)
throw new IncompatibleSourceException("Mpeg Stream is not Seekable");
randomAccessStreamFlag = seekableStreamFlag && ((Seekable) streams[0]).isRandomAccess();
}
public ContentDescriptor [] getSupportedInputContentDescriptors() {
return supportedFormat;
}
public void start() throws IOException {
super.start();
sysPausedFlag = false;
if (mpThread != null)
mpThread.start();
}
public void stop() {
super.stop();
sysPausedFlag = true;
if (mpThread != null)
mpThread.pause();
// Release any blocking readFrame.
TrackList info;
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null && tracks[i].isEnabled()) {
info = ((MediaTrack)tracks[i]).getTrackInfo();
info.releaseReadFrame();
}
}
}
public void close() {
stop();
flushInnerBuffers();
super.close();
if (mpThread != null)
mpThread.kill();
}
/*
* getTracks - read the MPEG system header, fill the inner buffers,
* configure the track layout, activate the inner thread
*/
public Track[] getTracks()
throws IOException, BadHeaderException {
/* check if the tracks are already initialized */
if (streamType == SYS11172_TYPE) {
if ((hideAudioTracks) && (videoTracks != null)) {
return videoTracks;
}
if ((hideVideoTracks) && (audioTracks != null)) {
return audioTracks;
}
}
if (tracks != null) {
return tracks;
}
try {
initTmpBufLen = (AUDIO_TRACK_BUF_SIZE < VIDEO_TRACK_BUF_SIZE) ?
AUDIO_TRACK_BUF_SIZE : VIDEO_TRACK_BUF_SIZE;
initTmpStreamBuf = new byte[initTmpBufLen];
/* detect stream type: Audio only / Video only / interleaved (system) */
initTmpBufLen = detectStreamType(initTmpStreamBuf);
/* extract the tracks information */
switch (streamType) {
case AUDIO_TYPE :
case VIDEO_TYPE :
initTrackAudioVideoOnly();
break;
case SYS11172_TYPE :
initTrackSystemStream();
break;
case UNKNOWN_TYPE :
default :
throw new BadHeaderException("Couldn't detect stream type");
}
// System.out.println("Number of tracks: " + numTracks);
initDuration();
if (saveOutputFlag) {
aout = new FileOutputStream(AoutName);
vout = new FileOutputStream(VoutName);
}
/* activate the inner thread for filling the inner buffers */
if (streamType == SYS11172_TYPE) {
if ( /*securityPrivelege && */ (jmfSecurity != null) ) {
String permission = null;
try {
if (jmfSecurity.getName().startsWith("jmf-security")) {
permission = "thread";
jmfSecurity.requestPermission(mSecurity, clSecurity, argsSecurity,
JMFSecurity.THREAD);
mSecurity[0].invoke(clSecurity[0], argsSecurity[0]);
permission = "thread group";
jmfSecurity.requestPermission(mSecurity, clSecurity, argsSecurity,
JMFSecurity.THREAD_GROUP);
mSecurity[0].invoke(clSecurity[0], argsSecurity[0]);
} else if (jmfSecurity.getName().startsWith("internet")) {
PolicyEngine.checkPermission(PermissionID.THREAD);
PolicyEngine.assertPermission(PermissionID.THREAD);
}
} catch (Throwable e) {
if (JMFSecurityManager.DEBUG) {
System.err.println( "Unable to get " + permission +
" privilege " + e);
}
securityPrivelege = false;
// TODO: Do the right thing if permissions cannot be obtained.
// User should be notified via an event
}
}
if ( (jmfSecurity != null) && (jmfSecurity.getName().startsWith("jdk12"))) {
try {
Constructor cons = jdk12CreateThreadAction.cons;
mpThread = (MpegBufferThread) jdk12.doPrivM.invoke(
jdk12.ac,
new Object[] {
cons.newInstance(
new Object[] {
MpegBufferThread.class,
})});
} catch (Exception e) {
System.err.println("MpegParser: Caught Exception " + e);
}
} else {
mpThread = new MpegBufferThread();
}
if (mpThread != null) {
mpThread.setParser(this);
mpThread.start(); // I don't think you need permission for start
}
if (saveOutputFlag || throwOutputFlag) {
try {
Thread.sleep(30000);
} catch (InterruptedException e) {}
}
}
/* return the resulting tracks */
if (streamType == SYS11172_TYPE) {
if (hideAudioTracks) {
return videoTracks;
}
if (hideVideoTracks) {
return audioTracks;
}
}
return tracks;
} catch (BadDataException e) {
parserErrorFlag = true;
throw new BadHeaderException("Bad data");
} catch (BadHeaderException e) {
parserErrorFlag = true;
throw e;
} catch (IOException e) {
updateEOMState();
EOMflag = true;
throw e;
}
}
private boolean isValidMp3Header(int code) {
return
(((code >>> 21) & 0x7ff) == 0x7ff && // sync
((code >>> 19) & 0x3) != 1 && // version
((code >>> 17) & 0x3) != 0 && // layer
((code >>> 12) & 0xf) != 0 && // bit rate
((code >>> 12) & 0xf) != 0xf && // bit rate
((code >>> 10) & 0x3) != 0x3 && // sample rate
(code & 0x3) != 0x2); // emphasis
}
/*
* Try to detect whether the stream is MPEG 11172-1 system bitstream,
* or MPEG video only stream, or MPEg audio only stream
*/
private int detectStreamType(byte[] streamBuf) throws IOException {
int i=0, code, videoCount=0, audioCount=0;
boolean found=false;
/* Copy each byte from the bitsream into a temporary buffer.
* If the stream is system, continue from where we got to in the
* stream and don't use the bytes in the temporary buffer.
* If the stream is raw MPEG audio/video - just copy the temporary
* buffer into the single track buffer.
*/
if (streamType != UNKNOWN_TYPE) {
return 0;
}
try {
/* try to look for generic codes */
readBytes(stream, streamBuf, 4);
while ((!found) && (i < streamBuf.length-5)) {
code = ((streamBuf[i] & 0xFF) << 24)
| ((streamBuf[i+1] & 0xFF) << 16)
| ((streamBuf[i+2] & 0xFF) << 8)
| (streamBuf[i+3] & 0xFF);
switch (code) {
case PACK_START_CODE :
/* check what happen right after the pack header end */
/* byte 0010XXX1 */
i++;
readBytes(stream, streamBuf, i+3, 1); /* read the next byte */
if ((streamBuf[i+3] & (byte)0xF1) == (byte)0x21) {
streamType = SYS11172_TYPE;
found = true;
}
continue; /* not a "real" pack code - skip on reading next byte */
case VIDEO_SEQUENCE_HEADER_CODE :
if (i == 0) { /* first code on the bitstream */
streamType = VIDEO_TYPE;
found = true;
}
case VIDEO_PICTURE_START_CODE :
case VIDEO_GROUP_START_CODE :
videoCount++;
break;
default :
/* check if audio frame sync word and legal layer code */
if ( ((code & 0xFFF00000) == 0xFFF00000) &&
((code & 0x00060000) != 0x00000000) &&
isValidMp3Header(code) ) {
audioCount++;
// if (i == 0) { /* first code on the bitstream */
streamType = AUDIO_TYPE;
found = true;
// }
startLocation = i;
}
/* otherwise, do nothing */
break;
}
i++;
readBytes(stream, streamBuf, i+3, 1); /* read the next byte */
}
} catch (IOException e) {
/* apply some very very simple logic */
if (streamType == UNKNOWN_TYPE) {
if (videoCount > 0) {
streamType = VIDEO_TYPE;
}
else if (audioCount > 0) {
streamType = AUDIO_TYPE;
}
}
updateEOMState();
EOMflag = true;
throw e;
}
/* apply some simple logic */
if (streamType == UNKNOWN_TYPE) {
if (videoCount > 4) {
streamType = VIDEO_TYPE;
}
else if (audioCount > 20) {
streamType = AUDIO_TYPE;
}
}
// I think this applies only to Audio
if (seekableStreamFlag && (streamType == AUDIO_TYPE)) {
int duration = -1;
Seekable s = (Seekable) stream;
long currentPos = s.tell();
// s.seek(0);
s.seek(startLocation);
int frameHeader = readInt(stream);
int h_id = (frameHeader>>>19) & 0x03; // MPEG version
int h_layer = (frameHeader>>>17) & 0x03; // Audio Layer
int h_bitrate = (frameHeader>>>12) & 0x0f;
int h_samplerate = (frameHeader>>>10) & 0x03;
int h_padding = (frameHeader>>> 9) & 0x01;
int h_mode = (frameHeader>>> 6) & 0x03; // Channel mode
int bitrate = bitrates[h_id][h_layer][h_bitrate];
// TODO: check if streamContentLength is not unknown/unbounded
// duration = (int)(streamContentLength/(bitrate * 125));
// Look for Xing VBR header
int offset = (((h_id & 1) == 1) ?
((h_mode != 3) ?
(32+4) :
(17+4))
: ((h_mode != 3) ?
(17+4) :
( 9+4)));
s.seek(offset);
String hdr = readString(stream);
if (hdr.equals("Xing")) {
int flags = readInt(stream);
int frames = readInt(stream);
int bytes = readInt(stream);
int samplerate = samplerates[h_id][h_samplerate];
int frameSize = 144000 * bitrate / samplerate + h_padding;
duration = (frameSize * frames) / (bitrate * 125); // Fixed time per frame
if (duration > 0) {
durationInitialized = true;
durationNs = new Time((double) duration);
}
}
s.seek(currentPos);
}
return (i+4);
}
private void initTrackAudioVideoOnly()
throws IOException, BadHeaderException, BadDataException {
TrackList trackInfo;
int possibleLen, itmp=0;
numTracks = 1;
tracks = new Track[1];
trackList[0] = new TrackList();
/* fill the whole buffer with data */
possibleLen = (streamType == AUDIO_TYPE) ? AUDIO_TRACK_BUF_SIZE :
VIDEO_TRACK_BUF_SIZE;
if (initTmpBufLen < possibleLen) {
if (possibleLen > initTmpStreamBuf.length) { /* enlarge buffer if needed */
byte[] tmpBuf2 = new byte[possibleLen];
System.arraycopy (initTmpStreamBuf, 0, tmpBuf2, 0, initTmpBufLen);
initTmpStreamBuf = tmpBuf2;
}
try {
itmp = readBytes(stream, initTmpStreamBuf, initTmpBufLen, (possibleLen - initTmpBufLen));
} catch (IOException e) {
updateEOMState();
EOMflag = true;
}
initTmpBufLen += itmp;
}
trackInfo = trackList[0];
do { /* look for track's embeded info */
extractStreamInfo(initTmpStreamBuf, 0, initTmpBufLen, true);
if (trackInfo.infoFlag) {
break; /* the info was found */
}
/* else - read more data, throw the existing data */
try {
itmp = readBytes(stream, initTmpStreamBuf, possibleLen);
} catch (IOException e) {
updateEOMState();
EOMflag = true;
break;
}
initTmpBufLen = itmp;
} while (trackInfo.infoFlag == false) ;
/* it's a real problem if we didn't detect any valid info till now */
if (trackInfo.infoFlag == false) { /* not a legal stream */
numTracks = 0;
tracks = null;
throw new BadHeaderException("Sorry, No tracks found");
}
/* now, if seekable, move to the beginning of the file */
/// if (seekable....) {
((Seekable)stream).seek(0L);
initTmpBufLen = 0;
EOMflag = false;
/// } else {
/* cannot jump to file beginning, just 'remember' the data exist in the buffer
* (maybe we lose some, if we had more than one loop)
*/
/// ............
/// }
}
private void initTrackSystemStream()
throws IOException, BadHeaderException, BadDataException {
int i;
tracks = new Track[MAX_TRACKS_SUPPORTED]; /* temporary allocation */
for (i = 0 ; i < tracks.length ; i++) {
tracks[i] = null;
}
for (i = 0 ; i < trackList.length ; i++) {
trackList[i] = null;
}
/* read first chunks of data */
mpegSystemParseBitstream(false, 0L, true, NO_PTS_VAL);
/* it's a real problem if we didn't detect any existing track till now */
if (numTracks == 0) {
throw new BadHeaderException("Sorry, No tracks found");
}
/* now create a correct length array of tracks */
{
Track[] tmpTracks = new Track[numTracks];
for (i = 0 ; i < numTracks ; i++) {
tmpTracks[i] = tracks[i]; /* copy pointer */
}
tracks = tmpTracks;
}
/* reorgenize the order of the tracks in the tracks array */
if (hideAudioTracks) {
TrackList trackInfo;
int v;
/* count video tracks first */
for (i = 0 ; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
if (trackInfo.trackType == VIDEO_TYPE) {
videoCount++;
}
}
}
if (videoCount == 0) { /* no video tracks */
throw new BadHeaderException("Sorry, No video tracks found");
}
videoTracks = new Track[videoCount];
/* copy pointers to video tracks only */
for (i=0, v=0 ; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
if (trackInfo.trackType == VIDEO_TYPE) {
videoTracks[v] = tracks[i];
}
}
}
}
if (hideVideoTracks) {
TrackList trackInfo;
int v;
/* count video tracks first */
for (i = 0 ; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
if (trackInfo.trackType == AUDIO_TYPE) {
audioCount++;
}
}
}
if (audioCount == 0) { /* no audio tracks */
throw new BadHeaderException("Sorry, No video tracks found");
}
audioTracks = new Track[audioCount];
/* copy pointers to audio tracks only */
for (i=0, v=0 ; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
if (trackInfo.trackType == AUDIO_TYPE) {
audioTracks[v] = tracks[i];
}
}
}
}
}
/**
* Returns a descriptive name for the plug-in.
* This is a user readable string.
*/
public String getName() {
return "Parser for MPEG-1 file format";
}
/*
* some time 'macros'
*/
private long convPTStoNanoseconds (long val) {
return (val * 100000 / 9L);
}
private long convNanosecondsToPTS (long val) {
return (val * 9 / 100000L);
}
private long convBytesToTimeAV(long bytes) {
long time;
if (trackList[0] == null)
return 0;
if (streamType == AUDIO_TYPE) {
if (((Audio)(trackList[0].media)).bitRate == 0) {
time = 0L;
} else {
time = (bytes << 3) / ((Audio)(trackList[0].media)).bitRate;
time *= 1000000L; // for nanoseconds
}
} else { /* VIDEO_TYPE */
if (((Video)(trackList[0].media)).bitRate == 0) {
time = 0L;
} else {
time = (bytes << 3) / ((Video)(trackList[0].media)).bitRate;
time *= 1000000000L; // for nanoseconds
}
}
return time;
}
private long convTimeToBytesAV(long time) {
long bytes;
if (streamType == AUDIO_TYPE) {
bytes = (time >> 3) * ((Audio)(trackList[0].media)).bitRate;
bytes /= 1000000L; // because of nanoseconds
} else { /* VIDEO_TYPE */
bytes = (time >> 3) * ((Video)(trackList[0].media)).bitRate;
bytes /= 1000000000L; // because of nanoseconds
}
return bytes;
}
/*
* Get the duration of the stream.
* If the stream length is unknown - need to update this "on the fly"
* (during the first run only)
*/
public Time getDuration() {
if (durationInitialized) {
return durationNs;
}
else { // try to update the duration
if (EOMflag) {
// updateEOMState() is already called when EOM was detected
durationInitialized = true ;
}
return durationNs;
}
}
private void initDuration() {
if (streamContentLength != SourceStream.LENGTH_UNKNOWN) {
if (streamType == SYS11172_TYPE) {
if (randomAccessStreamFlag) {
initDurationSystemSeekableRA();
}
} else {
updateDurationAudioVideoOnly();
}
}
}
/* track information was extracted for sure before calling to this method */
private void updateDurationAudioVideoOnly() {
if (durationInitialized) // NEW
return;
AVstartTimeNs = 0L;
AVcurrentTimeNs = 0L;
AVlastTimeNs = convBytesToTimeAV(streamContentLength);
durationNs = new Time(AVlastTimeNs - AVstartTimeNs);
durationInitialized = true ;
}
private void initDurationSystemSeekableRA() {
long baseLocation=0L, ltmp;
int saveNumPackets = numPackets;
boolean saveEOMflag = EOMflag;
baseLocation = ((Seekable)stream).tell();
/* look for the base time */
if (startPTS == NO_PTS_VAL) {
EOMflag = false;
((Seekable)stream).seek(0L);
try {
mpegSystemParseBitstream(true, 64*1024L, false, NO_PTS_VAL);
} catch (Exception e) {
}
}
if (startPTS == NO_PTS_VAL) {
startPTS = 0L;
}
/* look for the EOM time */
if (endPTS == NO_PTS_VAL) {
EOMflag = false;
currentPTS = NO_PTS_VAL;
ltmp = streamContentLength - 128*1024;
if (ltmp < 0) {
ltmp = 0;
}
((Seekable)stream).seek(ltmp);
try {
mpegSystemParseBitstream(true, 128*1024L, false, NO_PTS_VAL);
} catch (Exception e) {
}
endPTS = currentPTS;
}
if (endPTS == NO_PTS_VAL) {
endPTS = startPTS;
}
/* calc the duration */
ltmp = endPTS - startPTS;
if (ltmp < 0) { /* wrong values */
ltmp = 0;
parserErrorFlag = true;
}
durationNs = new Time(convPTStoNanoseconds(ltmp));
lastSetPositionTime = new Time(convPTStoNanoseconds(startPTS));
((Seekable)stream).seek(baseLocation);
EOMflag = saveEOMflag;
numPackets = saveNumPackets;
durationInitialized = true ;
}
/**
* Generate the EOM buffer and add to the buffer Q.
*/
void updateTrackEOM () {
for (int i = 0 ; i < trackList.length ; i++) {
if (trackList[i] != null)
trackList[i].generateEOM();
}
}
/*
* updateEOMState - update some veriables and flags in case of EOM detected
*/
void updateEOMState () {
/* there is a problem with using the getLocation(stream) method:
* in case of non-Seekable stream, the BasicPullParser just
* count the number of bytes, without considering skipping
* (treatment there is mistaken!!), no reseting at EOM, etc...
* That's why the following calculation will work properly for
* non-Seekable streams IF AND ONLY IF there was no scroll-movement
* on the first pass till the first EOM!!
* For Seekable streams there is no problem.
*/
if (! durationInitialized) {
if (streamContentLength == SourceStream.LENGTH_UNKNOWN) {
streamContentLength = getLocation(stream);
}
/* for System - both cases of not random-accessible or stream length unknown */
if (streamType == SYS11172_TYPE) {
if (startPTS == NO_PTS_VAL) {
startPTS = 0L;
}
if (endPTS == NO_PTS_VAL) {
endPTS = currentPTS;
}
if (endPTS == NO_PTS_VAL) {
endPTS = startPTS;
}
long ltmp = endPTS - startPTS;
if (ltmp < 0) { /* wrong values */
ltmp = 0;
parserErrorFlag = true;
}
durationNs = new Time(convPTStoNanoseconds(ltmp));
durationInitialized = true ;
} else { /* for Audio/Video only */
updateDurationAudioVideoOnly();
}
/* update the "global" duration */
////???? sendEvent (new DurationUpdateEvent(this, durationNs));
}
}
/*
* Get the current processed media time
*
* For System stream, it is NOT so simple: this is the time of the data
* processed by the inner thread, but probably NOT the time of the data
* inputed to the decoders by readFrame() !!!
* maybe we will try to calculate what's the situation in the inner buffers...
* For Audio/Video only, it is the time of the last data that was read
* in readFrame()
* For both, it is not known what is the situation in the codec's-plugin buffers...
*/
public Time getMediaTime() {
Time mtime;
if (streamType == SYS11172_TYPE) {
if (currentPTS == NO_PTS_VAL) {
mtime = new Time(0L);
} else {
mtime = new Time(convPTStoNanoseconds(currentPTS - startPTS));
}
} else { /* Audio / Viseo only */
/// AVcurrentTimeNs = convBytesToTimeAV(AVtotalBytesRead);
AVcurrentTimeNs = convBytesToTimeAV(getLocation(stream));
mtime = new Time(AVcurrentTimeNs);
}
return mtime;
}
/*
* Seek for a specific time (or nearest) in the stream, and reset
* the parser's buffers
*/
public Time setPosition(Time where, int rounding) {
Time newTime = null, preWhere;
if ((! durationInitialized) || (durationNs == Duration.DURATION_UNKNOWN)) {
return new Time(0L);
}
preWhere = new Time(where.getNanoseconds() - PRE_ROLLING_DELTA_NS);
long newTimeNs;
if (streamType == SYS11172_TYPE) {
flushInnerBuffers();
long preWherePTS, wherePTS, newPTS;
preWherePTS = convNanosecondsToPTS(preWhere.getNanoseconds());
preWherePTS += startPTS; /* 'convert' to our PTS values */
wherePTS = convNanosecondsToPTS(where.getNanoseconds());
wherePTS += startPTS; /* 'convert' to our PTS values */
newPTS = setPositionSystemSeekableRA(preWherePTS, wherePTS);
/* newPTS is already in the 'outside world' values */
newTimeNs = convPTStoNanoseconds(newPTS);
lastAudioNs = newTimeNs;
} else { /* Audio/Video only */
newTimeNs = setPositionAudioVideoOnly(preWhere.getNanoseconds(),
where.getNanoseconds());
lastAudioNs = newTimeNs;
}
newTime = new Time(newTimeNs);
// To guarantee that the position time is never the same.
if (lastSetPositionTime.getNanoseconds() == newTimeNs)
newTimeNs++;
lastSetPositionTime = new Time(newTimeNs);
EOMflag = false;
parserErrorFlag = false;
// System.out.println("Set position to: "+(float)where.getSeconds()+" --> "+(float)preWhere.getSeconds()+" --> "+(float)newTime.getSeconds());
// System.out.flush();
return newTime;
}
private long setPositionAudioVideoOnly(long where, long origWhere) {
long newTime, pos;
if (origWhere <= AVstartTimeNs + EPSILON_NS) {
newTime = AVstartTimeNs;
((Seekable)stream).seek(0L);
/// AVtotalBytesRead = 0L;
} else if (origWhere >= AVlastTimeNs - EPSILON_NS) {
newTime = AVlastTimeNs - AVstartTimeNs;
((Seekable)stream).seek(streamContentLength);
/// AVtotalBytesRead = streamContentLength;
} else {
newTime = where;
pos = convTimeToBytesAV(where);
((Seekable)stream).seek(pos);
/// AVtotalBytesRead = pos;
}
return newTime;
}
private long setPositionSystemSeekableRA(long wherePTS, long origWherePTS) {
long newTime = NO_PTS_VAL;
long lres = -1;
long range, step, pos;
long saveStartPTS = startPTS;
boolean saveEOMflag = EOMflag;
boolean zeroPosFlag = false;
if ((endPTS == NO_PTS_VAL) || (startPTS == NO_PTS_VAL)) {
newTime = 0L;
((Seekable)stream).seek(0L);
} else if (origWherePTS <= startPTS + EPSILON_PTS) {
newTime = 0L;
((Seekable)stream).seek(0L);
} else if (origWherePTS >= endPTS - EPSILON_PTS) {
newTime = endPTS - startPTS;
((Seekable)stream).seek(streamContentLength);
} else if (endPTS - startPTS < EPSILON_PTS) {
newTime = 0L;
((Seekable)stream).seek(0L);
} else {
/* try to guess the location */
pos = (long)(streamContentLength *
((wherePTS - startPTS) / ((float)(endPTS - startPTS))));
step = 20 * 1024L; /* arbitrary */
pos -= step;
if (pos < 0) {
pos = 0;
}
range = streamContentLength - pos; // first range is till the end of media
while (true) {
((Seekable)stream).seek(pos);
currentPTS = NO_PTS_VAL;
startPTS = NO_PTS_VAL;
EOMflag = false;
try {
lres = mpegSystemParseBitstream(true, range, false, wherePTS);
} catch (IOException e) {
lres = -2;
saveEOMflag = true;
} catch (Exception e) {
lres = -1;
}
if (lres >= 0) { /* PTS found */
newTime = currentPTS - saveStartPTS;
((Seekable)stream).seek(lres);
break;
} else if (lres == -2) {
newTime = endPTS - saveStartPTS;
((Seekable)stream).seek(streamContentLength);
break;
} else { /* lres == -1 */
pos -= step;
if (pos <= 0) {
if (zeroPosFlag) { /* couldn't find any. decide on 0L */
newTime = 0L;
((Seekable)stream).seek(0L);
break;
}
pos = 0;
zeroPosFlag = true; /* a flag to prevent loop forever */
}
range = 3 * step;
}
} /* end of while() */
startPTS = saveStartPTS;
EOMflag = saveEOMflag; // redandant, actually
}
return newTime;
}
/*
* parse the bitstream into the tracks inner buffers
* justLooking == false --> regular parsing into the tracks buffers
* justLooking == true --> only parse and update PTS params
* (don't save in the inner buffers!)
* newPTS == NO_PTS_VAL --> do not look for specific time stamp
* newPTS == xxx --> look for the time stamp which is close to xxx
*
* return value: meaningful only if (newPTS != NO_PTS_VAL).
* return the start location of the current pack in the stream
* or -1 if should look before. (-2: problem or eom)
* new fix: return the PTS prior to the newPTS, and not the first one after it.
*/
long mpegSystemParseBitstream (boolean justLooking, long range,
boolean justEnough, long newPTS)
throws IOException, BadHeaderException, BadDataException {
byte bval;
byte[] buf1 = new byte[1];
int code = 0;
boolean read4 = true, packFound = false;
long baseLocation = getLocation(stream);
long lastPacketLocation = baseLocation;
long lastLastPacketLocation = baseLocation;
long loc = baseLocation+4;
long lastCurrentPTS = NO_PTS_VAL;
long savePTS = NO_PTS_VAL;
while ((!sysPausedFlag && !EOMflag) || justLooking || justEnough) {
if (justEnough && !needingMore()) {
break; /* stop if we've gotten enough data */
}
if (justLooking) {
if (getLocation(stream) - baseLocation > range) {
break; /* stop if parsed more than range bytes */
}
if (newPTS != NO_PTS_VAL) { /* check if PTS was found */
if (newPTS < startPTS) {
return (-1L); /* should seek before this point */
}
if (newPTS <= currentPTS) {
if (newPTS == currentPTS) {
return lastPacketLocation;
} else { /* < */
currentPTS = lastCurrentPTS;
return lastLastPacketLocation;
}
}
}
}
if (read4) { /* read 4 bytes of code */
code = readInt(stream, true);
} else { /* read only the next byte */
readBytes(stream, buf1, 1);
code = ((code << 8) & 0xFFFFFF00) | (buf1[0] & 0x00FF);
}
switch (code) {
case PACK_START_CODE :
parsePackHeader();
read4 = true;
packFound = true;
break;
case SYSTEM_HEADER_START_CODE :
parseSystemHeader();
read4 = true;
break;
case END_CODE :
EOMflag = true;
/// ???? if ((lastPTS == NO_PTS_VAL) && (newPTS == NO_PTS_VAL)) {
if (endPTS == NO_PTS_VAL) { /// maybe update always if lastPTS wasn't accurate enough....
endPTS = currentPTS;
}
if ((!justLooking) || (newPTS != NO_PTS_VAL)) {
updateEOMState();
}
break;
default :
/* packet start code (it's only 24 bits) or default (error) */
if ( ((code >> 8) == PACKET_START_CODE_24) &&
((!justLooking) || (packFound & justLooking)) ) {
if (justLooking && (newPTS != NO_PTS_VAL)) {
loc = getLocation(stream);
savePTS = currentPTS;
}
bval = (byte)(code & 0x000000FF);
parsePacket(bval, justLooking);
read4 = true;
/* update for setPosition call */
if (justLooking && (newPTS != NO_PTS_VAL)) {
/* it seems there is no special need to initialize
* the 'lastCurrentPTS' and the 'lastLastPacketLocation'
*/
if (savePTS != currentPTS) { /* new PTS here */
lastCurrentPTS = savePTS;
lastLastPacketLocation = lastPacketLocation;
lastPacketLocation = loc - 4;
}
}
break;
} else { /* another code - shouldn't be */
read4 = false;
break;
}
}
}
/* in general, can catch here BadDataException & BadHeaderException,
* that may thrown because wrong start code (if read4 was false....)
*/
return ((EOMflag) ? (-2L) : (-1L));
}
/*
* parse the pack header
*/
private void parsePackHeader () throws IOException, BadDataException {
byte[] buf1 = new byte[1];
readBytes(stream, buf1, 1);
if ((buf1[0] & (byte)0xF0) != (byte)0x20) { /* check 0010xxxx */
throw new BadDataException("invalid pack header");
}
if ((buf1[0] & (byte)0x01) != (byte)0x01) { /* check marker bit #0 */
throw new BadDataException("illegal marker bit");
}
/* skip mux_rate */
skip(stream, 7);
/* we decide that there is no point to extract the value of the SCR
* (Systen Clock Reference) here, because there are movies in which
* there isn't any match between the SCR time and the PTS time.
* If we would extract it here, the code would be:
* long scr = ((long)(buf1[0] & 0x000E)) << 29;
* scr = ((scr << 31) >> 31); << make it signed num !? >>
* int itmp = readInt(stream, true);
* if ((itmp & 0x00010001) != 0x00010001) { << check 2 marker bits on #16 and #0 >>
* throw new BadDataException("illegal marker bit");
* }
* int itmp2 = (itmp & 0xFFFE0000) >> 2; << bits 29..15 >>
* scr |= ((long) (itmp2 & 0x3fffffff));
* scr |= (long)((itmp & 0x0000FFFE) >> 1); << bits 14..0 >>
* if (startSCR == NO_PTS_VAL) {
* startSCR = scr;
* }
* currentSCR = scr;
* skip(stream, 3);
*/
}
/*
* parse the MPEG system header
*
* According to the 11172-1 standard, all system headers in a specific
* bitstream, should be identical. The reality is different. That's why
* there is no point of really parsing the next system headers and comparing
* it (by equal()) to the first one...
*/
private void parseSystemHeader () throws IOException, BadHeaderException {
byte bval;
byte[] buf1 = new byte[1];
int itmp, size, scale, streamID, i, len;
short stmp;
/* read header length */
len = readShort(stream, true);
if (sysHeaderSeen) { /* not the first system header */
skip(stream, len);
} else { /* first one - parse it */
sysHeader.resetSystemHeader();
sysHeader.headerLen = len;
/* ...could check if there are enough bytes in the input... */
itmp = readInt(stream, true);
len -= 4;
if ((itmp & 0x80000100) != 0x80000100) { // marker bits on #31 and #8
throw new BadHeaderException("illegal marker bits in system header");
}
sysHeader.rateBound = (itmp & 0x7FFFFE00) >> 9;
sysHeader.audioBound = (itmp & 0x000000FC) >> 2;
sysHeader.fixedFlag = (itmp & 0x00000002) >> 1;
sysHeader.CSPSFlag = itmp & 0x00000001;
readBytes(stream, buf1, 1);
bval = buf1[0];
len -= 1;
if ((bval & (byte)0x20) != (byte)0x20) { // check marker bits #5
throw new BadHeaderException("illegal marker bits in system header");
}
sysHeader.audioLockFlag = (bval & 0x0080) >> 7;
sysHeader.videoLockFlag = (bval & 0x0040) >> 6;
sysHeader.videoBound = bval & 0x001F;
readBytes(stream, buf1, 1);
len -= 1;
sysHeader.reserved = buf1[0];
/* read streams STD info */
while (len > 1) {
readBytes(stream, buf1, 1);
bval = buf1[0];
len -= 1;
if ((bval & (byte)0x80) != (byte)0x80) // end of STD info
break;
/* check if STD refers to all audio streams */
if (bval == (byte)0xb8) {
stmp = readShort(stream, true);
len -= 2;
if ((stmp & 0x0000C000) != 0x0000C000) {
throw new BadHeaderException("illegal marker bits in system header");
}
size = stmp & 0x00001FFF; /* in 128 byte units */
sysHeader.allAudioSTDFlag = true;
for (i = MIN_AUDIO_ID ; i <= MAX_AUDIO_ID ; i++) {
/* do not set the stream_flags[i] field, because
* info isn't track specific
*/
sysHeader.STDBufBoundScale[i] = 0;
sysHeader.STDBufSizeBound[i] = size;
}
}
/* check if STD refers to all video streams */
else if (bval == (byte)0xb9) {
stmp = readShort(stream, true);
len -= 2;
if ((stmp & 0x0000C000) != 0x0000C000) {
throw new BadHeaderException("illegal marker bits in system header");
}
size = stmp & 0x00001FFF; /* in 1024 byte units */
sysHeader.allVideoSTDFlag = true;
for (i = MIN_VIDEO_ID ; i <= MAX_VIDEO_ID ; i++) {
/* do not set the stream_flags[i] field, because
* info isn't track specific
*/
sysHeader.STDBufBoundScale[i] = 1;
sysHeader.STDBufSizeBound[i] = size;
}
}
/* STD information of specific stream/track */
else {
if (((bval & 0x00FF) < MIN_STREAM_CODE)
|| ((bval & 0x00FF) > MAX_STREAM_CODE)) {
throw new BadHeaderException("illegal track number in system header");
}
streamID = getStreamID(bval);
if ((streamID >= 0) && (streamID < MAX_NUM_STREAMS)) {
stmp = readShort(stream, true);
len -= 2;
if ((stmp & 0x0000C000) != 0x0000C000) {
throw new BadHeaderException("illegal marker bits in system header");
}
scale = (stmp & 0x00002000) >> 13;
size = stmp & 0x00001FFF; /* in 1024 byte units */
sysHeader.streamFlags[streamID] = true;
sysHeader.STDBufBoundScale[streamID] = scale;
sysHeader.STDBufSizeBound[streamID] = size;
}
}
}
if (len < 0) {
throw new BadHeaderException("illegal system header");
}
if (len > 0) {
skip(stream, len);
}
sysHeaderSeen = true; /////
}
}
/*
* parse a packet
*/
private void parsePacket (byte bval, boolean justLooking)
throws IOException, BadDataException {
int streamID, itmp, itmp2;
int packetLen, count=0, dataSize;
int STDBufSize=0;
int STDBufScale=0;
int numWrittenToTmpBuf = 0;
byte[] tmpBuf = null;
byte[] buf1 = new byte[1];
long pts;
TrackList trackInfo;
/* identify the stream ID */
if (((bval & 0x00FF) < MIN_STREAM_CODE) || ((bval & 0x00FF) > MAX_STREAM_CODE)) {
throw new BadDataException("invalid stream(track) number");
}
streamID = getStreamID(bval);
/* read packet length */
packetLen = readShort(stream, true);
buf1[0] = bval;
/* could check here if there are are enough bytes in the input */
if ((buf1[0] & 0x00FF) != PRIVATE_STREAM2_CODE) {
/* skip stuffing bytes */
do {
readBytes(stream, buf1, 1);
count++;
} while (buf1[0] == (byte)0xFF);
/* STD buf details (meanwhile do nothing with this info) */
if ((buf1[0] & (byte)0xC0) == (byte)0x40) {
STDBufScale = ((buf1[0] & 0x0020) >> 5);
STDBufSize = (((int)buf1[0]) & 0x001F) << 8;
readBytes(stream, buf1, 1);
STDBufSize |= (int)buf1[0];
readBytes(stream, buf1, 1);
count += 2;
}
/* PTS - presentation time stamp (for now, do not try to attach to a spesific frame header) */
if ((buf1[0] & (byte)0xE0) == (byte)0x20) {
pts = ((long)(buf1[0] & 0x000E)) << 29;
pts = ((pts << 31) >> 31); /* make it signed num! (and lose the 33 bit) */
if ((buf1[0] & (byte)0x01) != (byte)0x01) { /* check marker bit #0 */
throw new BadDataException("illegal marker bit");
}
itmp = readInt(stream, true);
count += 4;
if ((itmp & 0x00010001) != 0x00010001) { /* check 2 marker bits on #16 and #0 */
throw new BadDataException("illegal marker bit");
}
// for bits 29..15 - problem if msb==1: pts |= (long)((itmp & 0xFFFE0000) >> 2);
itmp2 = (itmp & 0xFFFE0000) >> 2; /* bits 29..15 */
pts |= ((long) (itmp2 & 0x3fffffff)); /* bits 29..15 */
pts |= (long)((itmp & 0x0000FFFE) >> 1); /* bits 14..0 */
currentPTS = pts;
if (startPTS == NO_PTS_VAL) {
startPTS = currentPTS;
if ((startPTS > 0) && (startPTS <= EPSILON_PTS)) { /* actually zero time */
startPTS = 0L;
}
}
/* if there is a DTS - decoding time stamp - skip it */
if ((buf1[0] & (byte)0xF0) == (byte)0x30) {
skip(stream, 5);
count += 5;
}
} else if (buf1[0] != (byte)0x0F) { /* else - just validate the 8 bit code */
throw new BadDataException("invalid packet");
}
} /* end of not PRIVATE_STREAM2_CODE */
/* handle the packet data */
dataSize = packetLen - count;
if (justLooking) {
skip(stream, dataSize);
return;
}
/* check if it is reserved or private stream */
if ((streamID < 0) || (streamID >= MAX_NUM_STREAMS)) {
skip(stream, dataSize);
} else { /* (regular) audio/video stream */
if (trackList[streamID] == null) { /* in the first packet of the track */
trackList[streamID] = new TrackList();
}
trackInfo = trackList[streamID];
/* if stream not initialized yet, and/or couldn't extract stream info yet */
if (trackInfo.infoFlag == false) {
tmpBuf = new byte[dataSize];
numWrittenToTmpBuf = extractStreamInfo(tmpBuf, streamID, dataSize, false);
}
if (trackInfo.infoFlag == false) { /* no header found in this packet */
trackList[streamID] = null;
if (numWrittenToTmpBuf < dataSize) {
skip(stream, (dataSize-numWrittenToTmpBuf)); /* skip the rest of the packet */
}
} else {
/* update PTS if needed */
if (startPTS == NO_PTS_VAL) {
trackInfo.startPTS = currentPTS;
}
/* now copy data */
trackInfo.copyStreamDataToInnerBuffer(tmpBuf,
numWrittenToTmpBuf,
dataSize - numWrittenToTmpBuf,
currentPTS);
trackInfo.numPackets++;
if (dataSize > trackInfo.maxPacketSize) {
trackInfo.maxPacketSize = dataSize;
}
}
}
numPackets++;
}
/*
* parse the packet and extract specific information
*/
private int extractStreamInfo (byte[] tmpBuf, int streamID,
int dataLen, boolean AVOnlyState)
throws IOException, BadDataException {
byte stype = UNKNOWN_TYPE;
TrackList trackInfo = trackList[streamID];
int numBytes;
/* check if need to initialize the buffer and the stream structure */
if (trackInfo.trackType == UNKNOWN_TYPE) {
/* update fields */
stype = (AVOnlyState) ? streamType :
((streamID < MIN_VIDEO_ID) ? AUDIO_TYPE : VIDEO_TYPE);
trackInfo.init(stype);
sysHeader.streamFlags[streamID] = true;
trackInfo.startPTS = currentPTS;
}
/* extract specific audio / video info */
if (stype == AUDIO_TYPE) {
numBytes = extractAudioInfo(tmpBuf, trackInfo, dataLen, AVOnlyState);
} else { /* VIDEO_TYPE */
numBytes = extractVideoInfo(tmpBuf, trackInfo, dataLen, AVOnlyState);
}
if (trackInfo.infoFlag == true) {
if (AVOnlyState) {
tracks[0] = new MediaTrack(trackInfo);
} else {
tracks[numTracks] = new MediaTrack(trackInfo);
numTracks++;
}
}
return numBytes;
}
/*
* parse the audio packet and extract specific audio information
*
* Remark: audio.ID bit is set to '1' for standard MPEG-1 audio
* (ISO/IEC 11172-3). If this bit is set to '0', MPEG-2
* backwards compatible audio (ISO/IEC 13818-3) extension for
* lower sampling frequencies is used.
*/
private int extractAudioInfo (byte[] tmpBuf, TrackList trackInfo,
int dataLen, boolean AVOnlyState)
throws IOException, BadDataException {
Audio audio = new Audio();
int br, sr, numBytes;
/* tables for standard MPEG-1 audio */
int samplingFrequencyTable[] = {44100, 48000, 32000};
final short bitrateIndexTableL2[] =
{0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384};
/* bitrate table for layer 3:
* {0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320};
*/
/* tables for MPEG-2 audio extension */
/* int samplingFrequencyTable[] = {22050, 24000, 16000}; */
final short bitrateIndexTableL23Ext[] =
{0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160};
/* bitrate table for layer 1 extension:
{0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256};
*/
numBytes = (AVOnlyState) ? dataLen : (readBytes(stream, tmpBuf, dataLen));
for (int i = (int) startLocation ; i < numBytes-3 ; i++) {
// doesn't handle header start code which is splitted on end-of-packet
if ( (tmpBuf[i] == (byte)0xFF) && ( (tmpBuf[i+1] &(byte)0xF0) == (byte)0xF0) ) {
audio.ID = (tmpBuf[i+1] & 0x0008) >> 3;
audio.layer = 4 - ((tmpBuf[i+1] & 0x0006) >> 1);
audio.protection = (tmpBuf[i+1] & 0x0001);
br = (tmpBuf[i+2] & 0x00F0) >> 4;
sr = (tmpBuf[i+2] & 0x000C) >> 2;
{
if ( (sr < 0) || (sr >= samplingFrequencyTable.length) ) {
throw new BadDataException("Non Standard sample rates not supported");
}
}
audio.mode = (tmpBuf[i+3] & 0x00C0) >> 6;
audio.modeExt = (tmpBuf[i+3] & 0x0030) >> 4;
audio.channels = (audio.mode == 3) ? 1 : 2;
audio.copyright = (tmpBuf[i+3] & 0x0008) >> 3;
audio.original = (tmpBuf[i+3] & 0x0004)>> 2;
audio.emphasis = (tmpBuf[i+3] & 0x0003);
audio.valid = (br != 0x000F);
/* calculate sampling frequency and bitrate values */
if (audio.ID == 1) { /* standard MPEG-1 */
audio.sampleRate = samplingFrequencyTable[sr];
if (audio.layer == 3) {
if (br < 2) {
audio.bitRate = bitrateIndexTableL2[br];
} else if (br == 2) {
audio.bitRate = 40;
} else {
audio.bitRate = bitrateIndexTableL2[br-1];
}
} else if (audio.layer == 2) {
audio.bitRate = bitrateIndexTableL2[br];
} else { /* layer 1 */
audio.bitRate = br << 5;
}
} else { /* extension MPEG-2 */
audio.sampleRate = samplingFrequencyTable[sr]>>1;
if ((audio.layer == 3) || (audio.layer == 2)) {
audio.bitRate = bitrateIndexTableL23Ext[br];
} else { /* layer 1 */
if (br < 9) {
audio.bitRate = bitrateIndexTableL2[br];
} else if (br == 9) {
audio.bitRate = 144;
} else if (br == 10) {
audio.bitRate = bitrateIndexTableL2[br-1];
} else if (br == 11) {
audio.bitRate = 176;
} else {
audio.bitRate = bitrateIndexTableL2[br-2];
}
}
}
/* this is a calculation for one decoded frame length, in bytes */
// if (audio.bitRate < 30) {
// decodeFrameLen = 10 * 1024;
// } else {
// br = (audio.layer == 1) ? 48 : 144;
// decodeFrameLen = (int)(8 * (float)(audio.bitRate * 1000 * br) / audio.sampleRate);
// }
/* num of bytes for a duration of 1 second */
trackInfo.readFrameSize = (audio.bitRate * 1000) >> 3;
trackInfo.infoFlag = true;
trackInfo.media = audio;
break;
}
}
//trackInfo.media.toString();
return numBytes;
}
/*
* parse the video packet and extract specific video information
*/
private int extractVideoInfo (byte[] tmpBuf, TrackList trackInfo,
int dataLen, boolean AVOnlyState)
throws IOException, BadDataException {
Video video = new Video();
int i, code, numBytes, pr;
float aspectRatioTable[] =
{0.0f, 1.0f, 0.6735f, 0.7031f, 0.7615f, 0.8055f, 0.8437f,
0.8935f, 0.9375f, 0.9815f, 1.0255f, 1.0695f, 1.1250f,
1.1575f, 1.2015f, 1.0f};
float pictureRateTable[] =
{0.0f, 23.976f, 24.0f, 25.0f, 29.97f, 30.0f, 50.0f, 59.94f,
60.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f, -1.0f};
numBytes = (AVOnlyState) ? dataLen : (readBytes(stream, tmpBuf, dataLen));
for (i = 0 ; i < numBytes-10 ; i++) {
// doesn't handle header start code which is splitted on end-of-packet
// not working in Win, because of padding with the sign bit:
// code = data[i] << 24 | data[i+1] << 16 | data[i+2] << 8 | data [i+3];
code = ((tmpBuf[i] << 24) & 0xFF000000) | ((tmpBuf[i+1] << 16) & 0x00FF0000) |
((tmpBuf[i+2] << 8) & 0x0000FF00) | (tmpBuf[i+3] & 0x000000FF);
if (code == VIDEO_SEQUENCE_HEADER_CODE) {
video.width = (tmpBuf[i+4+0] & 0x00FF) << 4;
video.width |= (((int)tmpBuf[i+4+1]) >> 4) & 0x000F;
video.height = (tmpBuf[i+4+1] & 0x000F) << 8;
video.height |= (tmpBuf[i+4+2] & 0x00FF);
pr = (tmpBuf[i+4+3] & 0x00F0) >> 4;
video.pelAspectRatio = aspectRatioTable[pr];
pr = tmpBuf[i+4+3] & 0x000F;
video.pictureRate = pictureRateTable[pr];
pr = ( (tmpBuf[i+4+4] & 0x00FF) << 10 ) |
( (tmpBuf[i+4+5] & 0x00FF) << 2 ) |
( (tmpBuf[i+4+6] & 0x00C0) >> 6);
video.bitRate = pr * 400; // bitrate in units of 400 bps
if ( (video.pelAspectRatio == 0.0) || (video.pictureRate == 0.0) ) {
throw new BadDataException("video header corrupted");
}
if (video.pictureRate < 23.0) {
trackInfo.readFrameSize = 64 * 1024;
} else {
/* readFrameSize should be 1 second, but limited to not more
than half the video track buf size (arbitrary) */
trackInfo.readFrameSize = (int)(video.bitRate >> 3);
if (trackInfo.readFrameSize > (VIDEO_TRACK_BUF_SIZE>>1)) {
trackInfo.readFrameSize = VIDEO_TRACK_BUF_SIZE>>1 ;
}
}
trackInfo.infoFlag = true;
trackInfo.media = video;
//trackInfo.media.toString();
break;
}
}
return numBytes;
}
/*
* getStreamID - match value into an index
*/
private int getStreamID (byte bval) {
return ((bval & 0xFF) - 0xC0);
}
/*
* The inner class can use this method as they cannot use the
* getLocation(stream) method.
*/
private long getLocation() {
return getLocation(stream);
}
/*
* check if all the inner buffers have 'enough' space for another packet
* (in the future, may check it only for the next relevant track....)
*/
boolean needingMore() {
TrackList trackInfo;
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
if (trackInfo.bufQ.canRead()) {
return false;
}
}
}
return true;
}
void flushInnerBuffers() {
TrackList trackInfo;
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
// Release the wait in copyStreamDataToInnerBuffer.
synchronized (trackInfo.bufQ) {
trackInfo.flushFlag = true;
trackInfo.bufQ.notifyAll();
}
trackInfo.flushBuffer();
}
}
}
/// a temporary utility for debugging !
void saveInnerBuffersToFiles() {
TrackList trackInfo;
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
trackInfo.saveBufToFile();
}
}
}
void throwInnerBuffersContents() {
TrackList trackInfo;
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null) {
trackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
trackInfo.flushBuffer();
}
}
}
/// temporary !!
/* ===================================================================== */
/*
* Media class
*/
private abstract class Media {
abstract Format createFormat();
}
/* ===================================================================== */
/*
* Audio specific information class
*/
private class Audio extends Media {
boolean valid = false;
int ID = 0;
int layer = 0;
int protection = 0;
int bitRate = 0; /* in Kbits/sec == bits/msec */
int sampleRate = 0;
int mode = 0;
int modeExt = 0;
int copyright= 0;
int original = 0;
int emphasis= 0;
int channels=0;
AudioFormat format = null;
Format createFormat() {
if (format != null)
return format;
String encodingString;
if (layer == 3)
encodingString = AudioFormat.MPEGLAYER3;
else
encodingString = AudioFormat.MPEG;
//System.out.println("Audio layer="+layer+" encodingString="+encodingString);
int bitsPerSample = 16;
int frameSizeInBits = ((layer == 1) ? 352 : 1024)
* channels * bitsPerSample;
// format = new AudioFormat(encodingString,
// (double) sampleRate,
// bitsPerSample,
// channels,
// AudioFormat.LITTLE_ENDIAN,
// AudioFormat.SIGNED,
// frameSizeInBits,
// Format.NOT_SPECIFIED, // No FRAME_RATE specified
// byte[].class);
int bytesPerSecond = (bitRate * 1000) >> 3;
format = new WavAudioFormat(encodingString,
(double) sampleRate,
bitsPerSample,
channels,
frameSizeInBits,
bytesPerSecond,
AudioFormat.LITTLE_ENDIAN,
AudioFormat.SIGNED,
Format.NOT_SPECIFIED, // No FRAME_RATE specified
byte[].class,
null // Codec Specific Header
);
return format;
}
public String toString() {
System.out.println("Audio Media: " + format);
System.out.println("Number of channels " + channels);
System.out.println("valid " + valid);
System.out.println("ID " + ID);
System.out.println("layer " + layer);
System.out.println("protection " + protection);
System.out.println("bitrate " + bitRate);
System.out.println("sample rate " + sampleRate);
System.out.println("Mode " + mode + " ext "+ modeExt);
System.out.println("copyright " + copyright);
System.out.println("original " + original);
System.out.println("emphasis " + emphasis);
System.out.println("channels " + channels);
return super.toString();
}
}
/* ===================================================================== */
/*
* Video specific information class
*/
private class Video extends Media {
int width=0;
int height=0;
float pelAspectRatio = 0;
float pictureRate = 0;
int bitRate = 0;
VideoFormat format = null;
Format createFormat() {
int size = (int)(width * height * 1.5); //// *3 ?? *4 ??
if (format != null)
return format;
format = new VideoFormat(VideoFormat.MPEG,
new java.awt.Dimension(width, height),
size,
byte[].class,
(float)pictureRate);
return format;
}
public String toString() {
System.out.println("Video Media: " + format);
System.out.println("width " + width);
System.out.println("height " + height);
System.out.println("pixel aspect ratio " + pelAspectRatio);
System.out.println("picture rate " + pictureRate);
System.out.println("bitrate " + bitRate);
return super.toString();
}
}
/* ===================================================================== */
/*
* Track information class
*/
private class TrackList {
byte trackType = UNKNOWN_TYPE; /* Chunk identifier: Unknown/Audio/Video */
Time duration = Duration.DURATION_UNKNOWN; // TODO: NEED THIS?
long startPTS = NO_PTS_VAL; // the stream reset time ("zero")
boolean infoFlag = false; // indicates wether audio/video info was extracted
int numPackets = 0;
int maxPacketSize = 0;
int readFrameSize = 0; // size of 'chunk' in readFrame (~1 frame for video, ~8 frames for audio)
Media media; // Info specific to each track type
boolean supported = false; // Is this track type supported
boolean flushFlag = false;
CircularBuffer bufQ = null;
Buffer current = null;
MpegParser parser = MpegParser.this;
void init (byte stype) {
supported = true;
trackType = stype;
// We buffer up to 15 frames of compressed MPEG video and
// 5 secs worth of compressed audio.
if (trackType == VIDEO_TYPE)
bufQ = new CircularBuffer(15);
else
bufQ = new CircularBuffer(10);
}
/*
* return the number of data bytes in the inner buffer
*/
int readyDataBytes () {
return 1;
}
/*
* fill the inner buffer from the input stream
*/
void copyStreamDataToInnerBuffer (byte in[], int inSize, int size, long pts)
throws IOException {
int total = size;
int len = 0;
if (inSize > 0)
total += inSize;
else
inSize = 0;
synchronized (bufQ) {
if (current != null) {
len = current.getLength();
if (len != 0 && len + total >= readFrameSize) {
// We are done reading one frame.
bufQ.writeReport();
bufQ.notify();
current = null;
}
}
byte data[];
flushFlag = false;
if (current == null) {
while (!bufQ.canWrite() && !flushFlag) {
try {
bufQ.wait();
} catch (InterruptedException e) {}
}
if (flushFlag)
return;
current = bufQ.getEmptyBuffer();
current.setFlags(0);
current.setOffset(0);
current.setLength(0);
current.setTimeStamp(convPTStoNanoseconds(pts));
// Check the buffer for the enough space.
int bsize = (total > readFrameSize ? total : readFrameSize);
data = (byte[])current.getData();
if (data == null || data.length < bsize) {
data = new byte[bsize];
current.setData(data);
}
} else
data = (byte[])current.getData();
len = current.getLength();
// First copy the spilled over temp buffer.
if (inSize > 0)
System.arraycopy(in, 0, data, len, inSize);
// Read data from the stream into the buffer.
parser.readBytes(stream, data, len + inSize, size);
current.setLength(len + total);
} // synchronized bufQ
}
/*
* fill the output buffer from the inner buffer
*/
void copyFromInnerBuffer (Buffer out) {
Buffer buf;
synchronized (bufQ) {
while (!bufQ.canRead() && !sysPausedFlag && !parserErrorFlag) {
try {
bufQ.wait();
} catch (InterruptedException e) {}
}
if (sysPausedFlag || parserErrorFlag) {
out.setLength(0);
out.setDiscard(true);
return;
}
buf = bufQ.read();
byte saved[] = (byte[])out.getData();
out.copy(buf);
buf.setData(saved);
bufQ.readReport();
bufQ.notify();
}
}
/**
* Release any blocking readFrame.
*/
void releaseReadFrame() {
synchronized (bufQ) {
bufQ.notifyAll();
}
}
/**
* Generate the EOM buffer and add to the buffer Q.
*/
void generateEOM () {
Buffer buf;
synchronized (bufQ) {
// We'll need to push the last bit of data left in the buffer Q.
if (current != null) {
bufQ.writeReport();
bufQ.notify();
current = null;
}
// Now grab an empty buffer and fill that with the EOM flag.
while (!bufQ.canWrite()) {
try {
bufQ.wait();
} catch (InterruptedException e) {}
}
buf = bufQ.getEmptyBuffer();
buf.setFlags(buf.FLAG_EOM);
buf.setLength(0);
bufQ.writeReport();
bufQ.notify();
}
}
/*
* flush the inner buffer
*/
void flushBuffer() {
synchronized (bufQ) {
if (current != null) {
current.setDiscard(true);
bufQ.writeReport();
current = null;
}
while (bufQ.canRead()) {
bufQ.read();
bufQ.readReport();
}
bufQ.notifyAll();
}
}
public String toString() {
System.out.println("track type " + trackType + "(0 ?, 1 audio, 2 video)");
System.out.println("start PTS " + startPTS);
System.out.println("info flag " + infoFlag);
System.out.println("number of packets " + numPackets);
System.out.println("maximum packet size " + maxPacketSize);
System.out.println("supported " + supported);
System.out.println("duration (?) " + duration);
return media.toString();
}
/// a temporary utility for debugging !
void saveBufToFile(){
/*
FileOutputStream fout;
int size = readyDataBytes();
int itmp = bufLen - readPtr;
fout = (trackType == AUDIO_TYPE) ? aout : vout;
if (size == 0)
return;
try {
if (size > itmp) {
fout.write (buf, readPtr, itmp);
fout.write (buf, 0, (size-itmp));
} else {
fout.write (buf, readPtr, size);
}
fout.flush();
readPtr = 0;
writePtr = 0;
} catch (java.io.IOException e) {
System.out.println (" EE>> problem in writing to files");
}
*/
}
}
/* ===================================================================== */
/*
* Implemantation of the Track interface
*/
private class MediaTrack implements Track {
private TrackList trackInfo;
private boolean enabled;
private long sequenceNumber = 0;
private Format format;
private TrackListener listener;
MpegParser parser = MpegParser.this;
MediaTrack (TrackList trackInfo) {
this.trackInfo = trackInfo;
enabled = true; // EE??
format = trackInfo.media.createFormat();
}
public void setTrackListener(TrackListener l) {
listener = l;
}
public Format getFormat () {
return format;
}
public void setEnabled (boolean t) {
enabled = t;
}
public boolean isEnabled () {
return enabled;
}
public Time getDuration () {
return trackInfo.duration;
}
public Time getStartTime () {
if (streamType == SYS11172_TYPE) {
return new Time(((double)startPTS) / 90000.0);
} else {
return new Time(AVstartTimeNs);
}
}
public void readFrame (Buffer buffer) {
/* check first */
if (buffer == null) {
return;
}
if (!enabled) {
buffer.setDiscard(true);
return;
}
/* now read frame into the buffer */
if (streamType == SYS11172_TYPE) {
systemStreamReadFrame(buffer);
} else {
AudioVideoOnlyReadFrame(buffer);
}
buffer.setFormat(format);
buffer.setSequenceNumber(++sequenceNumber);
if (format instanceof AudioFormat) {
long tmp = buffer.getTimeStamp();
buffer.setTimeStamp(lastAudioNs);
lastAudioNs = tmp;
}
}
private void AudioVideoOnlyReadFrame (Buffer buffer) {
if (sysPausedFlag || parserErrorFlag) {
buffer.setLength(0);
buffer.setDiscard(true);
}
int size = trackInfo.readFrameSize;
Object obj = buffer.getData();
byte[] data;
if ( (obj == null) ||
(! (obj instanceof byte[]) ) ||
( ((byte[])obj).length < size) ) {
data = new byte[size];
buffer.setData(data);
} else {
data = (byte[]) obj;
}
int read1=0, read2=size;
int actualBytesRead=0, counter=0;
/* first, need to check if there is some data left in the initiation buffer */
if (initTmpBufLen > 0) {
read1 = (initTmpBufLen > size) ? size : initTmpBufLen;
System.arraycopy (initTmpStreamBuf, 0, data, 0, read1);
initTmpBufLen -= read1;
read2 -= read1;
counter = read1;
/// AVtotalBytesRead += read1;
}
if (trackInfo.trackType == AUDIO_TYPE) {
buffer.setTimeStamp(convBytesToTimeAV(getLocation() - read1));
}
/* now, read from the input stream */
if ((read2 > 0) && !EOMflag) {
try {
actualBytesRead = parser.readBytes (stream, data, read1, read2);
if (actualBytesRead == com.sun.media.protocol.BasicSourceStream.LENGTH_DISCARD) {
if (read1 == 0) {
buffer.setDiscard(true);
return;
}
} else {
counter += actualBytesRead;
/// AVtotalBytesRead += actualBytesRead;
}
} catch (IOException e) {
updateEOMState();
EOMflag = true;
if (AVlastTimeNs == 0) {
/// AVcurrentTimeNs = convBytesToTimeAV(AVtotalBytesRead);
AVcurrentTimeNs = convBytesToTimeAV(getLocation());
AVlastTimeNs = AVcurrentTimeNs;
}
}
}
if (EOMflag) {
if (read1 > 0) {
buffer.setLength(read1);
buffer.setOffset(0);
} else {
buffer.setLength(0);
buffer.setEOM(true);
}
}
buffer.setOffset(0);
buffer.setLength(counter);
//buffer.setTimeStamp(lastSetPositionTimeNs);
}
private void systemStreamReadFrame(Buffer buffer) {
/* copy from inner buffer to the output */
trackInfo.copyFromInnerBuffer(buffer);
if (sysPausedFlag || parserErrorFlag)
return;
/* check for disabled tracks */
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null) {
if (!tracks[i].isEnabled() ) {
TrackList AtrackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
AtrackInfo.flushBuffer();
}
}
}
/* debugging: it's an opportunity to 'flush' the audio inner buffers */
if (hideAudioTracks) {
TrackList AtrackInfo;
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null) {
AtrackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
if (AtrackInfo.trackType == AUDIO_TYPE) {
AtrackInfo.flushBuffer();
}
}
}
}
if (hideVideoTracks) {
TrackList AtrackInfo;
for (int i = 0; i < numTracks ; i++) {
if (tracks[i] != null) {
AtrackInfo = ((MediaTrack)tracks[i]).getTrackInfo();
if (AtrackInfo.trackType == VIDEO_TYPE) {
AtrackInfo.flushBuffer();
}
}
}
}
}
public int mapTimeToFrame (Time t) {
return 0; // TODO
}
public Time mapFrameToTime (int frameNumber) {
return null; // TODO
}
private TrackList getTrackInfo () {
return trackInfo;
}
}
/* ===================================================================== */
/*
* A class for holding and manipulating the system data
* of the MPEg bitstream
*/
private class SystemHeader {
int headerLen = 0; /* 16 */
int rateBound = 0; /* (1+)22(+1) */
int audioBound = 0; /* 6 */
int fixedFlag = 0; /* 1 */
int CSPSFlag = 0; /* 1 */
int audioLockFlag = 0; /* 1 */
int videoLockFlag = 0; /* 1 */
int videoBound = 0; /* (1+)5 */
int reserved = 0; /* 8 */
boolean allAudioSTDFlag = false; /* STD is for all audio streams */
boolean allVideoSTDFlag = false; /* STD is for all video streams */
boolean streamFlags[] = new boolean [MAX_NUM_STREAMS]; /* 8xN */
int STDBufBoundScale[] = new int [MAX_NUM_STREAMS]; /* (2+)1xN */
int STDBufSizeBound[] = new int [MAX_NUM_STREAMS]; /* 13xN */
SystemHeader () {
for (int i = 0; i < MAX_NUM_STREAMS; i++) {
streamFlags[i] = false;
STDBufBoundScale[i] = 0;
STDBufSizeBound[i] = 0;
}
}
/* reset system header fields */
void resetSystemHeader () {
headerLen = 0;
rateBound = 0;
audioBound = 0;
fixedFlag = 0;
CSPSFlag = 0;
audioLockFlag = 0;
videoLockFlag = 0;
videoBound = 0;
reserved = 0;
allAudioSTDFlag = false;
allVideoSTDFlag = false;
for (int i = 0; i < MAX_NUM_STREAMS; i++) {
streamFlags[i] = false;
STDBufBoundScale[i] = 0;
STDBufSizeBound[i] = 0;
}
}
void printFields () {
System.out.println("headerLen "+headerLen);
System.out.println("rateBound "+rateBound);
System.out.println("audioBound "+audioBound);
System.out.println("fixedFlag "+fixedFlag);
System.out.println("CSPSFlag "+CSPSFlag);
System.out.println("audioLockFlag "+audioLockFlag);
System.out.println("videoLockFlag "+videoLockFlag);
System.out.println("videoBound "+videoBound);
System.out.println("reserved "+reserved);
System.out.println("allAudioSTDFlag "+allAudioSTDFlag);
System.out.println("allVideoSTDFlag "+allVideoSTDFlag);
for (int i = 0; i < MAX_NUM_STREAMS; i++) {
if (streamFlags[i])
System.out.println("["+i+"] STDBufBoundScale "+
STDBufBoundScale[i]+
" STDBufSizeBound "+
STDBufSizeBound[i]);
}
}
}
}
/** this exception is thrown when mpeg data is not valid **/
class BadDataException extends MediaException {
/* Creates a simple exception object. */
BadDataException() {
super();
}
/* Creates an exception object with a specific reason. */
BadDataException(String reason) {
super(reason);
}
}
/**
* This class used to be an inner class, which is the correct thing to do.
* Changed it to a package private class because of jdk1.2 security.
* For jdk1.2 and above applets, MpegBufferThread is created in a
* privileged block using jdk12CreateThreadAction. jdk12CreateThreadAction
* class is unable to create and instantiate an inner class
* in MpegParser class
*/
/**
* A class for managing the thread which fill the inner buffers of
* the tracks.
*/
class MpegBufferThread extends LoopThread {
private MpegParser parser;
MpegBufferThread() {
this.setName(this.getName() + " (MpegBufferThread)");
useVideoPriority();
}
void setParser(MpegParser p) {
parser = p;
}
public boolean process() {
// If EOM is set, then we'll generate the EOM marker.
if (parser.EOMflag) {
parser.updateTrackEOM();
pause();
return true;
}
try {
/* fill buffers */
parser.mpegSystemParseBitstream(false, 0L, false, MpegParser.NO_PTS_VAL);
} catch (BadDataException e) {
parser.parserErrorFlag = true;
} catch (BadHeaderException e) {
parser.parserErrorFlag = true;
} catch (IOException e) {
parser.updateEOMState();
parser.EOMflag = true;
if (parser.endPTS == MpegParser.NO_PTS_VAL)
parser.endPTS = parser.currentPTS;
}
if (parser.parserErrorFlag) {
Log.error("MPEG parser error: possibly with a corrupted bitstream.");
pause();
}
return true; /* for loop thread to continue */
}
}