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Diffstat (limited to 'isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AACTrackImpl.java.svn-base')
-rw-r--r--isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AACTrackImpl.java.svn-base292
1 files changed, 0 insertions, 292 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AACTrackImpl.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AACTrackImpl.java.svn-base
deleted file mode 100644
index df51a1a..0000000
--- a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AACTrackImpl.java.svn-base
+++ /dev/null
@@ -1,292 +0,0 @@
-/*
- * Copyright 2012 castLabs GmbH, Berlin
- *
- * Licensed under the Apache License, Version 2.0 (the License);
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an AS IS BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-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.AC3SpecificBox;
-import com.googlecode.mp4parser.boxes.mp4.ESDescriptorBox;
-import com.googlecode.mp4parser.boxes.mp4.objectdescriptors.*;
-
-import java.io.BufferedInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.nio.ByteBuffer;
-import java.util.*;
-
-/**
- */
-public class AACTrackImpl extends AbstractTrack {
- public static Map<Integer, Integer> samplingFrequencyIndexMap = new HashMap<Integer, Integer>();
-
- static {
- samplingFrequencyIndexMap.put(96000, 0);
- samplingFrequencyIndexMap.put(88200, 1);
- samplingFrequencyIndexMap.put(64000, 2);
- samplingFrequencyIndexMap.put(48000, 3);
- samplingFrequencyIndexMap.put(44100, 4);
- samplingFrequencyIndexMap.put(32000, 5);
- samplingFrequencyIndexMap.put(24000, 6);
- samplingFrequencyIndexMap.put(22050, 7);
- samplingFrequencyIndexMap.put(16000, 8);
- samplingFrequencyIndexMap.put(12000, 9);
- samplingFrequencyIndexMap.put(11025, 10);
- samplingFrequencyIndexMap.put(8000, 11);
- samplingFrequencyIndexMap.put(0x0, 96000);
- samplingFrequencyIndexMap.put(0x1, 88200);
- samplingFrequencyIndexMap.put(0x2, 64000);
- samplingFrequencyIndexMap.put(0x3, 48000);
- samplingFrequencyIndexMap.put(0x4, 44100);
- samplingFrequencyIndexMap.put(0x5, 32000);
- samplingFrequencyIndexMap.put(0x6, 24000);
- samplingFrequencyIndexMap.put(0x7, 22050);
- samplingFrequencyIndexMap.put(0x8, 16000);
- samplingFrequencyIndexMap.put(0x9, 12000);
- samplingFrequencyIndexMap.put(0xa, 11025);
- samplingFrequencyIndexMap.put(0xb, 8000);
- }
-
- TrackMetaData trackMetaData = new TrackMetaData();
- SampleDescriptionBox sampleDescriptionBox;
-
- int samplerate;
- int bitrate;
- int channelCount;
- int channelconfig;
-
- int bufferSizeDB;
- long maxBitRate;
- long avgBitRate;
-
- private BufferedInputStream inputStream;
- private List<ByteBuffer> samples;
- boolean readSamples = false;
- List<TimeToSampleBox.Entry> stts;
- private String lang = "und";
-
-
- public AACTrackImpl(InputStream inputStream, String lang) throws IOException {
- this.lang = lang;
- parse(inputStream);
- }
-
- public AACTrackImpl(InputStream inputStream) throws IOException {
- parse(inputStream);
- }
-
- private void parse(InputStream inputStream) throws IOException {
- this.inputStream = new BufferedInputStream(inputStream);
- stts = new LinkedList<TimeToSampleBox.Entry>();
-
- if (!readVariables()) {
- throw new IOException();
- }
-
- samples = new LinkedList<ByteBuffer>();
- if (!readSamples()) {
- throw new IOException();
- }
-
- double packetsPerSecond = (double)samplerate / 1024.0;
- double duration = samples.size() / packetsPerSecond;
-
- long dataSize = 0;
- LinkedList<Integer> queue = new LinkedList<Integer>();
- for (int i = 0; i < samples.size(); i++) {
- int size = samples.get(i).capacity();
- dataSize += size;
- queue.add(size);
- while (queue.size() > packetsPerSecond) {
- queue.pop();
- }
- if (queue.size() == (int) packetsPerSecond) {
- int currSize = 0;
- for (int j = 0 ; j < queue.size(); j++) {
- currSize += queue.get(j);
- }
- double currBitrate = 8.0 * currSize / queue.size() * packetsPerSecond;
- if (currBitrate > maxBitRate) {
- maxBitRate = (int)currBitrate;
- }
- }
- }
-
- avgBitRate = (int) (8 * dataSize / duration);
-
- bufferSizeDB = 1536; /* TODO: Calcultate this somehow! */
-
- sampleDescriptionBox = new SampleDescriptionBox();
- AudioSampleEntry audioSampleEntry = new AudioSampleEntry("mp4a");
- audioSampleEntry.setChannelCount(2);
- audioSampleEntry.setSampleRate(samplerate);
- audioSampleEntry.setDataReferenceIndex(1);
- audioSampleEntry.setSampleSize(16);
-
-
- ESDescriptorBox esds = new ESDescriptorBox();
- ESDescriptor descriptor = new ESDescriptor();
- descriptor.setEsId(0);
-
- SLConfigDescriptor slConfigDescriptor = new SLConfigDescriptor();
- slConfigDescriptor.setPredefined(2);
- descriptor.setSlConfigDescriptor(slConfigDescriptor);
-
- DecoderConfigDescriptor decoderConfigDescriptor = new DecoderConfigDescriptor();
- decoderConfigDescriptor.setObjectTypeIndication(0x40);
- decoderConfigDescriptor.setStreamType(5);
- decoderConfigDescriptor.setBufferSizeDB(bufferSizeDB);
- decoderConfigDescriptor.setMaxBitRate(maxBitRate);
- decoderConfigDescriptor.setAvgBitRate(avgBitRate);
-
- AudioSpecificConfig audioSpecificConfig = new AudioSpecificConfig();
- audioSpecificConfig.setAudioObjectType(2); // AAC LC
- audioSpecificConfig.setSamplingFrequencyIndex(samplingFrequencyIndexMap.get(samplerate));
- audioSpecificConfig.setChannelConfiguration(channelconfig);
- decoderConfigDescriptor.setAudioSpecificInfo(audioSpecificConfig);
-
- descriptor.setDecoderConfigDescriptor(decoderConfigDescriptor);
-
- ByteBuffer data = descriptor.serialize();
- esds.setData(data);
- audioSampleEntry.addBox(esds);
- sampleDescriptionBox.addBox(audioSampleEntry);
-
- trackMetaData.setCreationTime(new Date());
- trackMetaData.setModificationTime(new Date());
- trackMetaData.setLanguage(lang);
- trackMetaData.setTimescale(samplerate); // Audio tracks always use samplerate as timescale
- }
-
- 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 List<ByteBuffer> getSamples() {
- return samples;
- }
-
- public Box getMediaHeaderBox() {
- return new SoundMediaHeaderBox();
- }
-
- public SubSampleInformationBox getSubsampleInformationBox() {
- return null;
- }
-
- private boolean readVariables() throws IOException {
- byte[] data = new byte[100];
- inputStream.mark(100);
- if (100 != inputStream.read(data, 0, 100)) {
- return false;
- }
- inputStream.reset(); // Rewind
- ByteBuffer bb = ByteBuffer.wrap(data);
- BitReaderBuffer brb = new BitReaderBuffer(bb);
- int syncword = brb.readBits(12);
- if (syncword != 0xfff) {
- return false;
- }
- int id = brb.readBits(1);
- int layer = brb.readBits(2);
- int protectionAbsent = brb.readBits(1);
- int profile = brb.readBits(2);
- samplerate = samplingFrequencyIndexMap.get(brb.readBits(4));
- brb.readBits(1);
- channelconfig = brb.readBits(3);
- int original = brb.readBits(1);
- int home = brb.readBits(1);
- int emphasis = brb.readBits(2);
-
- return true;
- }
-
- private boolean readSamples() throws IOException {
- if (readSamples) {
- return true;
- }
-
- readSamples = true;
- byte[] header = new byte[15];
- boolean ret = false;
- inputStream.mark(15);
- while (-1 != inputStream.read(header)) {
- ret = true;
- ByteBuffer bb = ByteBuffer.wrap(header);
- inputStream.reset();
- BitReaderBuffer brb = new BitReaderBuffer(bb);
- int syncword = brb.readBits(12);
- if (syncword != 0xfff) {
- return false;
- }
- brb.readBits(3);
- int protectionAbsent = brb.readBits(1);
- brb.readBits(14);
- int frameSize = brb.readBits(13);
- int bufferFullness = brb.readBits(11);
- int noBlocks = brb.readBits(2);
- int used = (int) Math.ceil(brb.getPosition() / 8.0);
- if (protectionAbsent == 0) {
- used += 2;
- }
- inputStream.skip(used);
- frameSize -= used;
-// System.out.println("Size: " + frameSize + " fullness: " + bufferFullness + " no blocks: " + noBlocks);
- byte[] data = new byte[frameSize];
- inputStream.read(data);
- samples.add(ByteBuffer.wrap(data));
- stts.add(new TimeToSampleBox.Entry(1, 1024));
- inputStream.mark(15);
- }
- return ret;
- }
-
- @Override
- public String toString() {
- return "AACTrackImpl{" +
- "samplerate=" + samplerate +
- ", bitrate=" + bitrate +
- ", channelCount=" + channelCount +
- ", channelconfig=" + channelconfig +
- '}';
- }
-}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-14 04:30:13 +0000