org.mp4parser.muxer.SampleImpl Maven / Gradle / Ivy

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This package has a focus on file operation. It can read A/V data from Random Access Datasources

There is a newer version: 1.9.56

package org.mp4parser.muxer;

import org.mp4parser.boxes.sampleentry.SampleEntry;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.WritableByteChannel;

import static org.mp4parser.tools.CastUtils.l2i;

public class SampleImpl implements Sample {
    private final long offset;
    private final long size;
    private ByteBuffer[] data;
    private SampleEntry sampleEntry;

    public SampleImpl(ByteBuffer buf, SampleEntry sampleEntry) {
        this.offset = -1;
        this.size = buf.limit();
        this.data = new ByteBuffer[]{buf};
        this.sampleEntry = sampleEntry;
    }

    public SampleImpl(ByteBuffer[] data, SampleEntry sampleEntry) {
        this.offset = -1;
        int _size = 0;
        for (ByteBuffer byteBuffer : data) {
            _size += byteBuffer.remaining();
        }
        this.size = _size;
        this.data = data;
        this.sampleEntry = sampleEntry;
    }

    public SampleImpl(long offset, long sampleSize, ByteBuffer data, SampleEntry sampleEntry) {
        this.offset = offset;
        this.size = sampleSize;
        this.data = new ByteBuffer[]{data};
        this.sampleEntry = sampleEntry;
    }

    public void writeTo(WritableByteChannel channel) throws IOException {
        for (ByteBuffer b : data) {
            channel.write(b.duplicate());
        }
    }

    @Override
    public SampleEntry getSampleEntry() {
        return sampleEntry;
    }

    public long getSize() {
        return size;
    }

    public ByteBuffer asByteBuffer() {
        byte[] bCopy = new byte[l2i(size)];
        ByteBuffer copy = ByteBuffer.wrap(bCopy);
        for (ByteBuffer b : data) {
            copy.put(b.duplicate());
        }
        copy.rewind();
        return copy;
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        sb.append("SampleImpl");
        sb.append("{offset=").append(offset);
        sb.append("{size=").append(size);
        sb.append('}');
        return sb.toString();
    }
}