diff options
Diffstat (limited to 'isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AC3TrackImpl.java.svn-base')
| -rw-r--r-- | isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AC3TrackImpl.java.svn-base | 513 |
1 files changed, 513 insertions, 0 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AC3TrackImpl.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AC3TrackImpl.java.svn-base new file mode 100644 index 0000000..5e5b2cd --- /dev/null +++ b/isoparser/src/main/java/com/googlecode/mp4parser/authoring/tracks/.svn/text-base/AC3TrackImpl.java.svn-base @@ -0,0 +1,513 @@ +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.objectdescriptors.BitReaderBuffer; + +import java.io.InputStream; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.util.Date; +import java.util.LinkedList; +import java.util.List; + +public class AC3TrackImpl extends AbstractTrack { + TrackMetaData trackMetaData = new TrackMetaData(); + SampleDescriptionBox sampleDescriptionBox; + + int samplerate; + int bitrate; + int channelCount; + + int fscod; + int bsid; + int bsmod; + int acmod; + int lfeon; + int frmsizecod; + + int frameSize; + int[][][][] bitRateAndFrameSizeTable; + + private InputStream inputStream; + private List<ByteBuffer> samples; + boolean readSamples = false; + List<TimeToSampleBox.Entry> stts; + private String lang = "und"; + + public AC3TrackImpl(InputStream fin, String lang) throws IOException { + this.lang = lang; + parse(fin); + } + + public AC3TrackImpl(InputStream fin) throws IOException { + parse(fin); + } + + private void parse(InputStream fin) throws IOException { + inputStream = fin; + bitRateAndFrameSizeTable = new int[19][2][3][2]; + stts = new LinkedList<TimeToSampleBox.Entry>(); + initBitRateAndFrameSizeTable(); + if (!readVariables()) { + throw new IOException(); + } + + sampleDescriptionBox = new SampleDescriptionBox(); + AudioSampleEntry audioSampleEntry = new AudioSampleEntry("ac-3"); + audioSampleEntry.setChannelCount(2); // According to ETSI TS 102 366 Annex F + audioSampleEntry.setSampleRate(samplerate); + audioSampleEntry.setDataReferenceIndex(1); + audioSampleEntry.setSampleSize(16); + + AC3SpecificBox ac3 = new AC3SpecificBox(); + ac3.setAcmod(acmod); + ac3.setBitRateCode(frmsizecod >> 1); + ac3.setBsid(bsid); + ac3.setBsmod(bsmod); + ac3.setFscod(fscod); + ac3.setLfeon(lfeon); + ac3.setReserved(0); + + audioSampleEntry.addBox(ac3); + 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 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(16); + if (syncword != 0xb77) { + return false; + } + brb.readBits(16); // CRC-1 + fscod = brb.readBits(2); + + switch (fscod) { + case 0: + samplerate = 48000; + break; + + case 1: + samplerate = 44100; + break; + + case 2: + samplerate = 32000; + break; + + case 3: + samplerate = 0; + break; + + } + if (samplerate == 0) { + return false; + } + + frmsizecod = brb.readBits(6); + + if (!calcBitrateAndFrameSize(frmsizecod)) { + return false; + } + + if (frameSize == 0) { + return false; + } + bsid = brb.readBits(5); + bsmod = brb.readBits(3); + acmod = brb.readBits(3); + + if (bsid == 9) { + samplerate /= 2; + } else if (bsid != 8 && bsid != 6) { + return false; + } + + if ((acmod != 1) && ((acmod & 1) == 1)) { + brb.readBits(2); + } + + if (0 != (acmod & 4)) { + brb.readBits(2); + } + + if (acmod == 2) { + brb.readBits(2); + } + + switch (acmod) { + case 0: + channelCount = 2; + break; + + case 1: + channelCount = 1; + break; + + case 2: + channelCount = 2; + break; + + case 3: + channelCount = 3; + break; + + case 4: + channelCount = 3; + break; + + case 5: + channelCount = 4; + break; + + case 6: + channelCount = 4; + break; + + case 7: + channelCount = 5; + break; + + } + + lfeon = brb.readBits(1); + + if (lfeon == 1) { + channelCount++; + } + return true; + } + + private boolean calcBitrateAndFrameSize(int code) { + int frmsizecode = code >>> 1; + int flag = code & 1; + if (frmsizecode > 18 || flag > 1 || fscod > 2) { + return false; + } + bitrate = bitRateAndFrameSizeTable[frmsizecode][flag][fscod][0]; + frameSize = 2 * bitRateAndFrameSizeTable[frmsizecode][flag][fscod][1]; + return true; + } + + private boolean readSamples() throws IOException { + if (readSamples) { + return true; + } + readSamples = true; + byte[] header = new byte[5]; + boolean ret = false; + inputStream.mark(5); + while (-1 != inputStream.read(header)) { + ret = true; + int frmsizecode = header[4] & 63; + calcBitrateAndFrameSize(frmsizecode); + inputStream.reset(); + byte[] data = new byte[frameSize]; + inputStream.read(data); + samples.add(ByteBuffer.wrap(data)); + stts.add(new TimeToSampleBox.Entry(1, 1536)); + inputStream.mark(5); + } + return ret; + } + + private void initBitRateAndFrameSizeTable() { + // ETSI 102 366 Table 4.13, in frmsizecod, flag, fscod, bitrate/size order. Note that all sizes are in words, and all bitrates in kbps + + // 48kHz + bitRateAndFrameSizeTable[0][0][0][0] = 32; + bitRateAndFrameSizeTable[0][1][0][0] = 32; + bitRateAndFrameSizeTable[0][0][0][1] = 64; + bitRateAndFrameSizeTable[0][1][0][1] = 64; + bitRateAndFrameSizeTable[1][0][0][0] = 40; + bitRateAndFrameSizeTable[1][1][0][0] = 40; + bitRateAndFrameSizeTable[1][0][0][1] = 80; + bitRateAndFrameSizeTable[1][1][0][1] = 80; + bitRateAndFrameSizeTable[2][0][0][0] = 48; + bitRateAndFrameSizeTable[2][1][0][0] = 48; + bitRateAndFrameSizeTable[2][0][0][1] = 96; + bitRateAndFrameSizeTable[2][1][0][1] = 96; + bitRateAndFrameSizeTable[3][0][0][0] = 56; + bitRateAndFrameSizeTable[3][1][0][0] = 56; + bitRateAndFrameSizeTable[3][0][0][1] = 112; + bitRateAndFrameSizeTable[3][1][0][1] = 112; + bitRateAndFrameSizeTable[4][0][0][0] = 64; + bitRateAndFrameSizeTable[4][1][0][0] = 64; + bitRateAndFrameSizeTable[4][0][0][1] = 128; + bitRateAndFrameSizeTable[4][1][0][1] = 128; + bitRateAndFrameSizeTable[5][0][0][0] = 80; + bitRateAndFrameSizeTable[5][1][0][0] = 80; + bitRateAndFrameSizeTable[5][0][0][1] = 160; + bitRateAndFrameSizeTable[5][1][0][1] = 160; + bitRateAndFrameSizeTable[6][0][0][0] = 96; + bitRateAndFrameSizeTable[6][1][0][0] = 96; + bitRateAndFrameSizeTable[6][0][0][1] = 192; + bitRateAndFrameSizeTable[6][1][0][1] = 192; + bitRateAndFrameSizeTable[7][0][0][0] = 112; + bitRateAndFrameSizeTable[7][1][0][0] = 112; + bitRateAndFrameSizeTable[7][0][0][1] = 224; + bitRateAndFrameSizeTable[7][1][0][1] = 224; + bitRateAndFrameSizeTable[8][0][0][0] = 128; + bitRateAndFrameSizeTable[8][1][0][0] = 128; + bitRateAndFrameSizeTable[8][0][0][1] = 256; + bitRateAndFrameSizeTable[8][1][0][1] = 256; + bitRateAndFrameSizeTable[9][0][0][0] = 160; + bitRateAndFrameSizeTable[9][1][0][0] = 160; + bitRateAndFrameSizeTable[9][0][0][1] = 320; + bitRateAndFrameSizeTable[9][1][0][1] = 320; + bitRateAndFrameSizeTable[10][0][0][0] = 192; + bitRateAndFrameSizeTable[10][1][0][0] = 192; + bitRateAndFrameSizeTable[10][0][0][1] = 384; + bitRateAndFrameSizeTable[10][1][0][1] = 384; + bitRateAndFrameSizeTable[11][0][0][0] = 224; + bitRateAndFrameSizeTable[11][1][0][0] = 224; + bitRateAndFrameSizeTable[11][0][0][1] = 448; + bitRateAndFrameSizeTable[11][1][0][1] = 448; + bitRateAndFrameSizeTable[12][0][0][0] = 256; + bitRateAndFrameSizeTable[12][1][0][0] = 256; + bitRateAndFrameSizeTable[12][0][0][1] = 512; + bitRateAndFrameSizeTable[12][1][0][1] = 512; + bitRateAndFrameSizeTable[13][0][0][0] = 320; + bitRateAndFrameSizeTable[13][1][0][0] = 320; + bitRateAndFrameSizeTable[13][0][0][1] = 640; + bitRateAndFrameSizeTable[13][1][0][1] = 640; + bitRateAndFrameSizeTable[14][0][0][0] = 384; + bitRateAndFrameSizeTable[14][1][0][0] = 384; + bitRateAndFrameSizeTable[14][0][0][1] = 768; + bitRateAndFrameSizeTable[14][1][0][1] = 768; + bitRateAndFrameSizeTable[15][0][0][0] = 448; + bitRateAndFrameSizeTable[15][1][0][0] = 448; + bitRateAndFrameSizeTable[15][0][0][1] = 896; + bitRateAndFrameSizeTable[15][1][0][1] = 896; + bitRateAndFrameSizeTable[16][0][0][0] = 512; + bitRateAndFrameSizeTable[16][1][0][0] = 512; + bitRateAndFrameSizeTable[16][0][0][1] = 1024; + bitRateAndFrameSizeTable[16][1][0][1] = 1024; + bitRateAndFrameSizeTable[17][0][0][0] = 576; + bitRateAndFrameSizeTable[17][1][0][0] = 576; + bitRateAndFrameSizeTable[17][0][0][1] = 1152; + bitRateAndFrameSizeTable[17][1][0][1] = 1152; + bitRateAndFrameSizeTable[18][0][0][0] = 640; + bitRateAndFrameSizeTable[18][1][0][0] = 640; + bitRateAndFrameSizeTable[18][0][0][1] = 1280; + bitRateAndFrameSizeTable[18][1][0][1] = 1280; + + // 44.1 kHz + bitRateAndFrameSizeTable[0][0][1][0] = 32; + bitRateAndFrameSizeTable[0][1][1][0] = 32; + bitRateAndFrameSizeTable[0][0][1][1] = 69; + bitRateAndFrameSizeTable[0][1][1][1] = 70; + bitRateAndFrameSizeTable[1][0][1][0] = 40; + bitRateAndFrameSizeTable[1][1][1][0] = 40; + bitRateAndFrameSizeTable[1][0][1][1] = 87; + bitRateAndFrameSizeTable[1][1][1][1] = 88; + bitRateAndFrameSizeTable[2][0][1][0] = 48; + bitRateAndFrameSizeTable[2][1][1][0] = 48; + bitRateAndFrameSizeTable[2][0][1][1] = 104; + bitRateAndFrameSizeTable[2][1][1][1] = 105; + bitRateAndFrameSizeTable[3][0][1][0] = 56; + bitRateAndFrameSizeTable[3][1][1][0] = 56; + bitRateAndFrameSizeTable[3][0][1][1] = 121; + bitRateAndFrameSizeTable[3][1][1][1] = 122; + bitRateAndFrameSizeTable[4][0][1][0] = 64; + bitRateAndFrameSizeTable[4][1][1][0] = 64; + bitRateAndFrameSizeTable[4][0][1][1] = 139; + bitRateAndFrameSizeTable[4][1][1][1] = 140; + bitRateAndFrameSizeTable[5][0][1][0] = 80; + bitRateAndFrameSizeTable[5][1][1][0] = 80; + bitRateAndFrameSizeTable[5][0][1][1] = 174; + bitRateAndFrameSizeTable[5][1][1][1] = 175; + bitRateAndFrameSizeTable[6][0][1][0] = 96; + bitRateAndFrameSizeTable[6][1][1][0] = 96; + bitRateAndFrameSizeTable[6][0][1][1] = 208; + bitRateAndFrameSizeTable[6][1][1][1] = 209; + bitRateAndFrameSizeTable[7][0][1][0] = 112; + bitRateAndFrameSizeTable[7][1][1][0] = 112; + bitRateAndFrameSizeTable[7][0][1][1] = 243; + bitRateAndFrameSizeTable[7][1][1][1] = 244; + bitRateAndFrameSizeTable[8][0][1][0] = 128; + bitRateAndFrameSizeTable[8][1][1][0] = 128; + bitRateAndFrameSizeTable[8][0][1][1] = 278; + bitRateAndFrameSizeTable[8][1][1][1] = 279; + bitRateAndFrameSizeTable[9][0][1][0] = 160; + bitRateAndFrameSizeTable[9][1][1][0] = 160; + bitRateAndFrameSizeTable[9][0][1][1] = 348; + bitRateAndFrameSizeTable[9][1][1][1] = 349; + bitRateAndFrameSizeTable[10][0][1][0] = 192; + bitRateAndFrameSizeTable[10][1][1][0] = 192; + bitRateAndFrameSizeTable[10][0][1][1] = 417; + bitRateAndFrameSizeTable[10][1][1][1] = 418; + bitRateAndFrameSizeTable[11][0][1][0] = 224; + bitRateAndFrameSizeTable[11][1][1][0] = 224; + bitRateAndFrameSizeTable[11][0][1][1] = 487; + bitRateAndFrameSizeTable[11][1][1][1] = 488; + bitRateAndFrameSizeTable[12][0][1][0] = 256; + bitRateAndFrameSizeTable[12][1][1][0] = 256; + bitRateAndFrameSizeTable[12][0][1][1] = 557; + bitRateAndFrameSizeTable[12][1][1][1] = 558; + bitRateAndFrameSizeTable[13][0][1][0] = 320; + bitRateAndFrameSizeTable[13][1][1][0] = 320; + bitRateAndFrameSizeTable[13][0][1][1] = 696; + bitRateAndFrameSizeTable[13][1][1][1] = 697; + bitRateAndFrameSizeTable[14][0][1][0] = 384; + bitRateAndFrameSizeTable[14][1][1][0] = 384; + bitRateAndFrameSizeTable[14][0][1][1] = 835; + bitRateAndFrameSizeTable[14][1][1][1] = 836; + bitRateAndFrameSizeTable[15][0][1][0] = 448; + bitRateAndFrameSizeTable[15][1][1][0] = 448; + bitRateAndFrameSizeTable[15][0][1][1] = 975; + bitRateAndFrameSizeTable[15][1][1][1] = 975; + bitRateAndFrameSizeTable[16][0][1][0] = 512; + bitRateAndFrameSizeTable[16][1][1][0] = 512; + bitRateAndFrameSizeTable[16][0][1][1] = 1114; + bitRateAndFrameSizeTable[16][1][1][1] = 1115; + bitRateAndFrameSizeTable[17][0][1][0] = 576; + bitRateAndFrameSizeTable[17][1][1][0] = 576; + bitRateAndFrameSizeTable[17][0][1][1] = 1253; + bitRateAndFrameSizeTable[17][1][1][1] = 1254; + bitRateAndFrameSizeTable[18][0][1][0] = 640; + bitRateAndFrameSizeTable[18][1][1][0] = 640; + bitRateAndFrameSizeTable[18][0][1][1] = 1393; + bitRateAndFrameSizeTable[18][1][1][1] = 1394; + + // 32kHz + bitRateAndFrameSizeTable[0][0][2][0] = 32; + bitRateAndFrameSizeTable[0][1][2][0] = 32; + bitRateAndFrameSizeTable[0][0][2][1] = 96; + bitRateAndFrameSizeTable[0][1][2][1] = 96; + bitRateAndFrameSizeTable[1][0][2][0] = 40; + bitRateAndFrameSizeTable[1][1][2][0] = 40; + bitRateAndFrameSizeTable[1][0][2][1] = 120; + bitRateAndFrameSizeTable[1][1][2][1] = 120; + bitRateAndFrameSizeTable[2][0][2][0] = 48; + bitRateAndFrameSizeTable[2][1][2][0] = 48; + bitRateAndFrameSizeTable[2][0][2][1] = 144; + bitRateAndFrameSizeTable[2][1][2][1] = 144; + bitRateAndFrameSizeTable[3][0][2][0] = 56; + bitRateAndFrameSizeTable[3][1][2][0] = 56; + bitRateAndFrameSizeTable[3][0][2][1] = 168; + bitRateAndFrameSizeTable[3][1][2][1] = 168; + bitRateAndFrameSizeTable[4][0][2][0] = 64; + bitRateAndFrameSizeTable[4][1][2][0] = 64; + bitRateAndFrameSizeTable[4][0][2][1] = 192; + bitRateAndFrameSizeTable[4][1][2][1] = 192; + bitRateAndFrameSizeTable[5][0][2][0] = 80; + bitRateAndFrameSizeTable[5][1][2][0] = 80; + bitRateAndFrameSizeTable[5][0][2][1] = 240; + bitRateAndFrameSizeTable[5][1][2][1] = 240; + bitRateAndFrameSizeTable[6][0][2][0] = 96; + bitRateAndFrameSizeTable[6][1][2][0] = 96; + bitRateAndFrameSizeTable[6][0][2][1] = 288; + bitRateAndFrameSizeTable[6][1][2][1] = 288; + bitRateAndFrameSizeTable[7][0][2][0] = 112; + bitRateAndFrameSizeTable[7][1][2][0] = 112; + bitRateAndFrameSizeTable[7][0][2][1] = 336; + bitRateAndFrameSizeTable[7][1][2][1] = 336; + bitRateAndFrameSizeTable[8][0][2][0] = 128; + bitRateAndFrameSizeTable[8][1][2][0] = 128; + bitRateAndFrameSizeTable[8][0][2][1] = 384; + bitRateAndFrameSizeTable[8][1][2][1] = 384; + bitRateAndFrameSizeTable[9][0][2][0] = 160; + bitRateAndFrameSizeTable[9][1][2][0] = 160; + bitRateAndFrameSizeTable[9][0][2][1] = 480; + bitRateAndFrameSizeTable[9][1][2][1] = 480; + bitRateAndFrameSizeTable[10][0][2][0] = 192; + bitRateAndFrameSizeTable[10][1][2][0] = 192; + bitRateAndFrameSizeTable[10][0][2][1] = 576; + bitRateAndFrameSizeTable[10][1][2][1] = 576; + bitRateAndFrameSizeTable[11][0][2][0] = 224; + bitRateAndFrameSizeTable[11][1][2][0] = 224; + bitRateAndFrameSizeTable[11][0][2][1] = 672; + bitRateAndFrameSizeTable[11][1][2][1] = 672; + bitRateAndFrameSizeTable[12][0][2][0] = 256; + bitRateAndFrameSizeTable[12][1][2][0] = 256; + bitRateAndFrameSizeTable[12][0][2][1] = 768; + bitRateAndFrameSizeTable[12][1][2][1] = 768; + bitRateAndFrameSizeTable[13][0][2][0] = 320; + bitRateAndFrameSizeTable[13][1][2][0] = 320; + bitRateAndFrameSizeTable[13][0][2][1] = 960; + bitRateAndFrameSizeTable[13][1][2][1] = 960; + bitRateAndFrameSizeTable[14][0][2][0] = 384; + bitRateAndFrameSizeTable[14][1][2][0] = 384; + bitRateAndFrameSizeTable[14][0][2][1] = 1152; + bitRateAndFrameSizeTable[14][1][2][1] = 1152; + bitRateAndFrameSizeTable[15][0][2][0] = 448; + bitRateAndFrameSizeTable[15][1][2][0] = 448; + bitRateAndFrameSizeTable[15][0][2][1] = 1344; + bitRateAndFrameSizeTable[15][1][2][1] = 1344; + bitRateAndFrameSizeTable[16][0][2][0] = 512; + bitRateAndFrameSizeTable[16][1][2][0] = 512; + bitRateAndFrameSizeTable[16][0][2][1] = 1536; + bitRateAndFrameSizeTable[16][1][2][1] = 1536; + bitRateAndFrameSizeTable[17][0][2][0] = 576; + bitRateAndFrameSizeTable[17][1][2][0] = 576; + bitRateAndFrameSizeTable[17][0][2][1] = 1728; + bitRateAndFrameSizeTable[17][1][2][1] = 1728; + bitRateAndFrameSizeTable[18][0][2][0] = 640; + bitRateAndFrameSizeTable[18][1][2][0] = 640; + bitRateAndFrameSizeTable[18][0][2][1] = 1920; + bitRateAndFrameSizeTable[18][1][2][1] = 1920; + } +}
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