summaryrefslogtreecommitdiff
path: root/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/EC3TrackImpl.java.svn-base
diff options
context:
space:
mode:
Diffstat (limited to 'isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/EC3TrackImpl.java.svn-base')
-rw-r--r--isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/EC3TrackImpl.java.svn-base436
1 files changed, 0 insertions, 436 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/EC3TrackImpl.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/EC3TrackImpl.java.svn-base
deleted file mode 100644
index d0b2d76..0000000
--- a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/EC3TrackImpl.java.svn-base
+++ /dev/null
@@ -1,436 +0,0 @@
-package com.googlecode.mp4parser.authoring.tracks;
-
-import com.coremedia.iso.boxes.*;
-import com.coremedia.iso.boxes.sampleentry.AudioSampleEntry;
-import com.googlecode.mp4parser.authoring.AbstractTrack;
-import com.googlecode.mp4parser.authoring.TrackMetaData;
-import com.googlecode.mp4parser.boxes.EC3SpecificBox;
-import com.googlecode.mp4parser.boxes.mp4.objectdescriptors.BitReaderBuffer;
-
-import java.io.BufferedInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.ByteBuffer;
-import java.util.Date;
-import java.util.LinkedList;
-import java.util.List;
-
-/**
- * Created by IntelliJ IDEA.
- * User: magnus
- * Date: 2012-03-14
- * Time: 10:39
- * To change this template use File | Settings | File Templates.
- */
-public class EC3TrackImpl extends AbstractTrack {
- TrackMetaData trackMetaData = new TrackMetaData();
- SampleDescriptionBox sampleDescriptionBox;
-
- int samplerate;
- int bitrate;
- int frameSize;
-
- List<BitStreamInfo> entries = new LinkedList<BitStreamInfo>();
-
- private BufferedInputStream inputStream;
- private List<ByteBuffer> samples;
- List<TimeToSampleBox.Entry> stts = new LinkedList<TimeToSampleBox.Entry>();
- private String lang = "und";
-
- public EC3TrackImpl(InputStream fin, String lang) throws IOException {
- this.lang = lang;
- parse(fin);
- }
-
- public EC3TrackImpl(InputStream fin) throws IOException {
- parse(fin);
- }
-
- private void parse(InputStream fin) throws IOException {
- inputStream = new BufferedInputStream(fin);
-
- boolean done = false;
- inputStream.mark(10000);
- while (!done) {
- BitStreamInfo bsi = readVariables();
- if (bsi == null) {
- throw new IOException();
- }
- for (BitStreamInfo entry : entries) {
- if (bsi.strmtyp != 1 && entry.substreamid == bsi.substreamid) {
- done = true;
- }
- }
- if (!done) {
- entries.add(bsi);
- long skipped = inputStream.skip(bsi.frameSize);
- assert skipped == bsi.frameSize;
- }
- }
-
- inputStream.reset();
-
- if (entries.size() == 0) {
- throw new IOException();
- }
- samplerate = entries.get(0).samplerate;
-
- sampleDescriptionBox = new SampleDescriptionBox();
- AudioSampleEntry audioSampleEntry = new AudioSampleEntry("ec-3");
- audioSampleEntry.setChannelCount(2); // According to ETSI TS 102 366 Annex F
- audioSampleEntry.setSampleRate(samplerate);
- audioSampleEntry.setDataReferenceIndex(1);
- audioSampleEntry.setSampleSize(16);
-
- EC3SpecificBox ec3 = new EC3SpecificBox();
- int[] deps = new int[entries.size()];
- int[] chan_locs = new int[entries.size()];
- for (BitStreamInfo bsi : entries) {
- if (bsi.strmtyp == 1) {
- deps[bsi.substreamid]++;
- chan_locs[bsi.substreamid] = ((bsi.chanmap >> 6) & 0x100) | ((bsi.chanmap >> 5) & 0xff);
- }
- }
- for (BitStreamInfo bsi : entries) {
- if (bsi.strmtyp != 1) {
- EC3SpecificBox.Entry e = new EC3SpecificBox.Entry();
- e.fscod = bsi.fscod;
- e.bsid = bsi.bsid;
- e.bsmod = bsi.bsmod;
- e.acmod = bsi.acmod;
- e.lfeon = bsi.lfeon;
- e.reserved = 0;
- e.num_dep_sub = deps[bsi.substreamid];
- e.chan_loc = chan_locs[bsi.substreamid];
- e.reserved2 = 0;
- ec3.addEntry(e);
- }
- bitrate += bsi.bitrate;
- frameSize += bsi.frameSize;
- }
-
- ec3.setDataRate(bitrate / 1000);
- audioSampleEntry.addBox(ec3);
- sampleDescriptionBox.addBox(audioSampleEntry);
-
- trackMetaData.setCreationTime(new Date());
- trackMetaData.setModificationTime(new Date());
- trackMetaData.setLanguage(lang);
- trackMetaData.setTimescale(samplerate); // Audio tracks always use samplerate as timescale
-
- samples = new LinkedList<ByteBuffer>();
- if (!readSamples()) {
- throw new IOException();
- }
- }
-
-
- public List<ByteBuffer> getSamples() {
-
- return samples;
- }
-
- public SampleDescriptionBox getSampleDescriptionBox() {
- return sampleDescriptionBox;
- }
-
- public List<TimeToSampleBox.Entry> getDecodingTimeEntries() {
- return stts;
- }
-
- public List<CompositionTimeToSample.Entry> getCompositionTimeEntries() {
- return null;
- }
-
- public long[] getSyncSamples() {
- return null;
- }
-
- public List<SampleDependencyTypeBox.Entry> getSampleDependencies() {
- return null;
- }
-
- public TrackMetaData getTrackMetaData() {
- return trackMetaData;
- }
-
- public String getHandler() {
- return "soun";
- }
-
- public AbstractMediaHeaderBox getMediaHeaderBox() {
- return new SoundMediaHeaderBox();
- }
-
- public SubSampleInformationBox getSubsampleInformationBox() {
- return null;
- }
-
- private BitStreamInfo readVariables() throws IOException {
- byte[] data = new byte[200];
- inputStream.mark(200);
- if (200 != inputStream.read(data, 0, 200)) {
- return null;
- }
- inputStream.reset(); // Rewind
- ByteBuffer bb = ByteBuffer.wrap(data);
- BitReaderBuffer brb = new BitReaderBuffer(bb);
- int syncword = brb.readBits(16);
- if (syncword != 0xb77) {
- return null;
- }
-
- BitStreamInfo entry = new BitStreamInfo();
-
- entry.strmtyp = brb.readBits(2);
- entry.substreamid = brb.readBits(3);
- int frmsiz = brb.readBits(11);
- entry.frameSize = 2 * (frmsiz + 1);
-
- entry.fscod = brb.readBits(2);
- int fscod2 = -1;
- int numblkscod;
- if (entry.fscod == 3) {
- fscod2 = brb.readBits(2);
- numblkscod = 3;
- } else {
- numblkscod = brb.readBits(2);
- }
- int numberOfBlocksPerSyncFrame = 0;
- switch (numblkscod) {
- case 0:
- numberOfBlocksPerSyncFrame = 1;
- break;
-
- case 1:
- numberOfBlocksPerSyncFrame = 2;
- break;
-
- case 2:
- numberOfBlocksPerSyncFrame = 3;
- break;
-
- case 3:
- numberOfBlocksPerSyncFrame = 6;
- break;
-
- }
- entry.frameSize *= (6 / numberOfBlocksPerSyncFrame);
-
- entry.acmod = brb.readBits(3);
- entry.lfeon = brb.readBits(1);
- entry.bsid = brb.readBits(5);
- brb.readBits(5);
- if (1 == brb.readBits(1)) {
- brb.readBits(8); // compr
- }
- if (0 == entry.acmod) {
- brb.readBits(5);
- if (1 == brb.readBits(1)) {
- brb.readBits(8);
- }
- }
- if (1 == entry.strmtyp) {
- if (1 == brb.readBits(1)) {
- entry.chanmap = brb.readBits(16);
- }
- }
- if (1 == brb.readBits(1)) { // mixing metadata
- if (entry.acmod > 2) {
- brb.readBits(2);
- }
- if (1 == (entry.acmod & 1) && entry.acmod > 2) {
- brb.readBits(3);
- brb.readBits(3);
- }
- if (0 < (entry.acmod & 4)) {
- brb.readBits(3);
- brb.readBits(3);
- }
- if (1 == entry.lfeon) {
- if (1 == brb.readBits(1)) {
- brb.readBits(5);
- }
- }
- if (0 == entry.strmtyp) {
- if (1 == brb.readBits(1)) {
- brb.readBits(6);
- }
- if (0 == entry.acmod) {
- if (1 == brb.readBits(1)) {
- brb.readBits(6);
- }
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(6);
- }
- int mixdef = brb.readBits(2);
- if (1 == mixdef) {
- brb.readBits(5);
- } else if (2 == mixdef) {
- brb.readBits(12);
- } else if (3 == mixdef) {
- int mixdeflen = brb.readBits(5);
- if (1 == brb.readBits(1)) {
- brb.readBits(5);
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(4);
- }
- }
- }
- if (1 == brb.readBits(1)) {
- brb.readBits(5);
- if (1 == brb.readBits(1)) {
- brb.readBits(7);
- if (1 == brb.readBits(1)) {
- brb.readBits(8);
- }
- }
- }
- for (int i = 0; i < (mixdeflen + 2); i++) {
- brb.readBits(8);
- }
- brb.byteSync();
- }
- if (entry.acmod < 2) {
- if (1 == brb.readBits(1)) {
- brb.readBits(14);
- }
- if (0 == entry.acmod) {
- if (1 == brb.readBits(1)) {
- brb.readBits(14);
- }
- }
- if (1 == brb.readBits(1)) {
- if (numblkscod == 0) {
- brb.readBits(5);
- } else {
- for (int i = 0; i < numberOfBlocksPerSyncFrame; i++) {
- if (1 == brb.readBits(1)) {
- brb.readBits(5);
- }
- }
- }
-
- }
- }
- }
- }
- if (1 == brb.readBits(1)) { // infomdate
- entry.bsmod = brb.readBits(3);
- }
-
- switch (entry.fscod) {
- case 0:
- entry.samplerate = 48000;
- break;
-
- case 1:
- entry.samplerate = 44100;
- break;
-
- case 2:
- entry.samplerate = 32000;
- break;
-
- case 3: {
- switch (fscod2) {
- case 0:
- entry.samplerate = 24000;
- break;
-
- case 1:
- entry.samplerate = 22050;
- break;
-
- case 2:
- entry.samplerate = 16000;
- break;
-
- case 3:
- entry.samplerate = 0;
- break;
- }
- break;
- }
-
- }
- if (entry.samplerate == 0) {
- return null;
- }
-
- entry.bitrate = (int) (((double) entry.samplerate) / 1536.0 * entry.frameSize * 8);
-
- return entry;
- }
-
- private boolean readSamples() throws IOException {
- int read = frameSize;
- boolean ret = false;
- while (frameSize == read) {
- ret = true;
- byte[] data = new byte[frameSize];
- read = inputStream.read(data);
- if (read == frameSize) {
- samples.add(ByteBuffer.wrap(data));
- stts.add(new TimeToSampleBox.Entry(1, 1536));
- }
- }
- return ret;
- }
-
- public static class BitStreamInfo extends EC3SpecificBox.Entry {
- public int frameSize;
- public int substreamid;
- public int bitrate;
- public int samplerate;
- public int strmtyp;
- public int chanmap;
-
- @Override
- public String toString() {
- return "BitStreamInfo{" +
- "frameSize=" + frameSize +
- ", substreamid=" + substreamid +
- ", bitrate=" + bitrate +
- ", samplerate=" + samplerate +
- ", strmtyp=" + strmtyp +
- ", chanmap=" + chanmap +
- '}';
- }
- }
-
- @Override
- public String toString() {
- return "EC3TrackImpl{" +
- "bitrate=" + bitrate +
- ", samplerate=" + samplerate +
- ", entries=" + entries +
- '}';
- }
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-14 21:47:11 +0000