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-rw-r--r--isoparser/src/main/java/com/coremedia/iso/boxes/mdat/.svn/text-base/SampleList.java.svn-base227
1 files changed, 0 insertions, 227 deletions
diff --git a/isoparser/src/main/java/com/coremedia/iso/boxes/mdat/.svn/text-base/SampleList.java.svn-base b/isoparser/src/main/java/com/coremedia/iso/boxes/mdat/.svn/text-base/SampleList.java.svn-base
deleted file mode 100644
index a7f7b59..0000000
--- a/isoparser/src/main/java/com/coremedia/iso/boxes/mdat/.svn/text-base/SampleList.java.svn-base
+++ /dev/null
@@ -1,227 +0,0 @@
-package com.coremedia.iso.boxes.mdat;
-
-import com.coremedia.iso.IsoFile;
-import com.coremedia.iso.boxes.*;
-import com.coremedia.iso.boxes.fragment.*;
-
-import java.nio.ByteBuffer;
-import java.util.*;
-
-import static com.googlecode.mp4parser.util.CastUtils.l2i;
-
-/**
- * Creates a list of <code>ByteBuffer</code>s that represent the samples of a given track.
- */
-public class SampleList extends AbstractList<ByteBuffer> {
-
-
- long[] offsets;
- long[] sizes;
-
- IsoFile isoFile;
- HashMap<MediaDataBox, Long> mdatStartCache = new HashMap<MediaDataBox, Long>();
- HashMap<MediaDataBox, Long> mdatEndCache = new HashMap<MediaDataBox, Long>();
- MediaDataBox[] mdats;
-
- /**
- * Gets a sorted random access optimized list of all sample offsets.
- * Basically it is a map from sample number to sample offset.
- *
- * @return the sorted list of sample offsets
- */
- public long[] getOffsetKeys() {
- return offsets;
- }
-
-
- public SampleList(TrackBox trackBox) {
- initIsoFile(trackBox.getIsoFile()); // where are we?
-
- // first we get all sample from the 'normal' MP4 part.
- // if there are none - no problem.
- SampleSizeBox sampleSizeBox = trackBox.getSampleTableBox().getSampleSizeBox();
- ChunkOffsetBox chunkOffsetBox = trackBox.getSampleTableBox().getChunkOffsetBox();
- SampleToChunkBox sampleToChunkBox = trackBox.getSampleTableBox().getSampleToChunkBox();
-
-
- final long[] chunkOffsets = chunkOffsetBox != null ? chunkOffsetBox.getChunkOffsets() : new long[0];
- if (sampleToChunkBox != null && sampleToChunkBox.getEntries().size() > 0 &&
- chunkOffsets.length > 0 && sampleSizeBox != null && sampleSizeBox.getSampleCount() > 0) {
- long[] numberOfSamplesInChunk = sampleToChunkBox.blowup(chunkOffsets.length);
-
- int sampleIndex = 0;
-
- if (sampleSizeBox.getSampleSize() > 0) {
- sizes = new long[l2i(sampleSizeBox.getSampleCount())];
- Arrays.fill(sizes, sampleSizeBox.getSampleSize());
- } else {
- sizes = sampleSizeBox.getSampleSizes();
- }
- offsets = new long[sizes.length];
-
- for (int i = 0; i < numberOfSamplesInChunk.length; i++) {
- long thisChunksNumberOfSamples = numberOfSamplesInChunk[i];
- long sampleOffset = chunkOffsets[i];
- for (int j = 0; j < thisChunksNumberOfSamples; j++) {
- long sampleSize = sizes[sampleIndex];
- offsets[sampleIndex] = sampleOffset;
- sampleOffset += sampleSize;
- sampleIndex++;
- }
- }
-
- }
-
- // Next we add all samples from the fragments
- // in most cases - I've never seen it different it's either normal or fragmented.
- List<MovieExtendsBox> movieExtendsBoxes = trackBox.getParent().getBoxes(MovieExtendsBox.class);
-
- if (movieExtendsBoxes.size() > 0) {
- Map<Long, Long> offsets2Sizes = new HashMap<Long, Long>();
- List<TrackExtendsBox> trackExtendsBoxes = movieExtendsBoxes.get(0).getBoxes(TrackExtendsBox.class);
- for (TrackExtendsBox trackExtendsBox : trackExtendsBoxes) {
- if (trackExtendsBox.getTrackId() == trackBox.getTrackHeaderBox().getTrackId()) {
- for (MovieFragmentBox movieFragmentBox : trackBox.getIsoFile().getBoxes(MovieFragmentBox.class)) {
- offsets2Sizes.putAll(getOffsets(movieFragmentBox, trackBox.getTrackHeaderBox().getTrackId(), trackExtendsBox));
- }
- }
- }
-
- if (sizes == null || offsets == null) {
- sizes = new long[0];
- offsets = new long[0];
- }
-
- splitToArrays(offsets2Sizes);
- }
-
- // We have now a map from all sample offsets to their sizes
- }
-
- private void splitToArrays(Map<Long, Long> offsets2Sizes) {
- List<Long> keys = new ArrayList<Long>(offsets2Sizes.keySet());
- Collections.sort(keys);
-
- long[] nuSizes = new long[sizes.length + keys.size()];
- System.arraycopy(sizes, 0, nuSizes, 0, sizes.length);
- long[] nuOffsets = new long[offsets.length + keys.size()];
- System.arraycopy(offsets, 0, nuOffsets, 0, offsets.length);
- for (int i = 0; i < keys.size(); i++) {
- nuOffsets[i + offsets.length] = keys.get(i);
- nuSizes[i + sizes.length] = offsets2Sizes.get(keys.get(i));
- }
- sizes = nuSizes;
- offsets = nuOffsets;
- }
-
- public SampleList(TrackFragmentBox traf) {
- sizes = new long[0];
- offsets = new long[0];
- Map<Long, Long> offsets2Sizes = new HashMap<Long, Long>();
- initIsoFile(traf.getIsoFile());
-
- final List<MovieFragmentBox> movieFragmentBoxList = isoFile.getBoxes(MovieFragmentBox.class);
-
- final long trackId = traf.getTrackFragmentHeaderBox().getTrackId();
- for (MovieFragmentBox moof : movieFragmentBoxList) {
- final List<TrackFragmentHeaderBox> trackFragmentHeaderBoxes = moof.getTrackFragmentHeaderBoxes();
- for (TrackFragmentHeaderBox tfhd : trackFragmentHeaderBoxes) {
- if (tfhd.getTrackId() == trackId) {
- offsets2Sizes.putAll(getOffsets(moof, trackId, null));
- }
- }
- }
- splitToArrays(offsets2Sizes);
- }
-
- private void initIsoFile(IsoFile isoFile) {
- this.isoFile = isoFile;
- // find all mdats first to be able to use them later with explicitly looking them up
- long currentOffset = 0;
- LinkedList<MediaDataBox> mdats = new LinkedList<MediaDataBox>();
- for (Box b : this.isoFile.getBoxes()) {
- long currentSize = b.getSize();
- if ("mdat".equals(b.getType())) {
- if (b instanceof MediaDataBox) {
- long contentOffset = currentOffset + ((MediaDataBox) b).getHeader().limit();
- mdatStartCache.put((MediaDataBox) b, contentOffset);
- mdatEndCache.put((MediaDataBox) b, contentOffset + currentSize);
- mdats.add((MediaDataBox) b);
- } else {
- throw new RuntimeException("Sample need to be in mdats and mdats need to be instanceof MediaDataBox");
- }
- }
- currentOffset += currentSize;
- }
- this.mdats = mdats.toArray(new MediaDataBox[mdats.size()]);
- }
-
-
- @Override
- public int size() {
- return sizes.length;
- }
-
-
- @Override
- public ByteBuffer get(int index) {
- // it is a two stage lookup: from index to offset to size
- long offset = offsets[index];
- int sampleSize = l2i(sizes[index]);
-
- for (MediaDataBox mediaDataBox : mdats) {
- long start = mdatStartCache.get(mediaDataBox);
- long end = mdatEndCache.get(mediaDataBox);
- if ((start <= offset) && (offset + sampleSize <= end)) {
- return mediaDataBox.getContent(offset - start, sampleSize);
- }
- }
-
- throw new RuntimeException("The sample with offset " + offset + " and size " + sampleSize + " is NOT located within an mdat");
- }
-
- Map<Long, Long> getOffsets(MovieFragmentBox moof, long trackId, TrackExtendsBox trex) {
- Map<Long, Long> offsets2Sizes = new HashMap<Long, Long>();
- List<TrackFragmentBox> traf = moof.getBoxes(TrackFragmentBox.class);
- for (TrackFragmentBox trackFragmentBox : traf) {
- if (trackFragmentBox.getTrackFragmentHeaderBox().getTrackId() == trackId) {
- long baseDataOffset;
- if (trackFragmentBox.getTrackFragmentHeaderBox().hasBaseDataOffset()) {
- baseDataOffset = trackFragmentBox.getTrackFragmentHeaderBox().getBaseDataOffset();
- } else {
- baseDataOffset = moof.getOffset();
- }
-
- for (TrackRunBox trun : trackFragmentBox.getBoxes(TrackRunBox.class)) {
- long sampleBaseOffset = baseDataOffset + trun.getDataOffset();
- final TrackFragmentHeaderBox tfhd = ((TrackFragmentBox) trun.getParent()).getTrackFragmentHeaderBox();
-
- long offset = 0;
- for (TrackRunBox.Entry entry : trun.getEntries()) {
- final long sampleSize;
- if (trun.isSampleSizePresent()) {
- sampleSize = entry.getSampleSize();
- offsets2Sizes.put(offset + sampleBaseOffset, sampleSize);
- offset += sampleSize;
- } else {
- if (tfhd.hasDefaultSampleSize()) {
- sampleSize = tfhd.getDefaultSampleSize();
- offsets2Sizes.put(offset + sampleBaseOffset, sampleSize);
- offset += sampleSize;
- } else {
- if (trex == null) {
- throw new RuntimeException("File doesn't contain trex box but track fragments aren't fully self contained. Cannot determine sample size.");
- }
- sampleSize = trex.getDefaultSampleSize();
- offsets2Sizes.put(offset + sampleBaseOffset, sampleSize);
- offset += sampleSize;
- }
- }
- }
- }
- }
- }
- return offsets2Sizes;
- }
-
-} \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-14 16:18:13 +0000