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A generic parser and writer for all ISO 14496 based files (MP4, Quicktime, DCF, PDCF, ...)

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/*
 * Copyright 2012 Sebastian Annies, Hamburg
 *
 * 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.boxes.apple;

import com.coremedia.iso.BoxParser;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.coremedia.iso.boxes.Box;
import com.coremedia.iso.boxes.sampleentry.AbstractSampleEntry;

import java.io.IOException;
import java.nio.ByteBuffer;
import com.googlecode.mp4parser.DataSource;
import java.nio.channels.WritableByteChannel;
import java.util.List;

import static com.googlecode.mp4parser.util.CastUtils.l2i;

/**
 * 

4cc = "{@value #TYPE}"

* Entry type for timed text samples defined in the timed text specification (ISO/IEC 14496-17). */ public class QuicktimeTextSampleEntry extends AbstractSampleEntry { public static final String TYPE = "text"; int displayFlags; int textJustification; int backgroundR; int backgroundG; int backgroundB; long defaultTextBox; long reserved1; short fontNumber; short fontFace; byte reserved2; short reserved3; int foregroundR = 65535; int foregroundG = 65535; int foregroundB = 65535; String fontName = ""; int dataReferenceIndex; public QuicktimeTextSampleEntry() { super(TYPE); } @Override public void parse(DataSource dataSource, ByteBuffer header, long contentSize, BoxParser boxParser) throws IOException { ByteBuffer content = ByteBuffer.allocate(l2i(contentSize)); dataSource.read(content); content.position(6); dataReferenceIndex = IsoTypeReader.readUInt16(content); displayFlags = content.getInt(); textJustification = content.getInt(); backgroundR = IsoTypeReader.readUInt16(content); backgroundG = IsoTypeReader.readUInt16(content); backgroundB = IsoTypeReader.readUInt16(content); defaultTextBox = IsoTypeReader.readUInt64(content); reserved1 = IsoTypeReader.readUInt64(content); fontNumber = content.getShort(); fontFace = content.getShort(); reserved2 = content.get(); reserved3 = content.getShort(); foregroundR = IsoTypeReader.readUInt16(content); foregroundG = IsoTypeReader.readUInt16(content); foregroundB = IsoTypeReader.readUInt16(content); if (content.remaining() > 0) { int length = IsoTypeReader.readUInt8(content); byte[] myFontName = new byte[length]; content.get(myFontName); fontName = new String(myFontName); } else { fontName = null; } // initContainer(); there are no child boxes!? } @Override public void setBoxes(List boxes) { throw new RuntimeException("QuicktimeTextSampleEntries may not have child boxes"); } @Override public void addBox(Box box) { throw new RuntimeException("QuicktimeTextSampleEntries may not have child boxes"); } @Override public void getBox(WritableByteChannel writableByteChannel) throws IOException { writableByteChannel.write(getHeader()); ByteBuffer byteBuffer = ByteBuffer.allocate(52 + (fontName != null ? fontName.length() : 0)); byteBuffer.position(6); IsoTypeWriter.writeUInt16(byteBuffer, dataReferenceIndex); byteBuffer.putInt(displayFlags); byteBuffer.putInt(textJustification); IsoTypeWriter.writeUInt16(byteBuffer, backgroundR); IsoTypeWriter.writeUInt16(byteBuffer, backgroundG); IsoTypeWriter.writeUInt16(byteBuffer, backgroundB); IsoTypeWriter.writeUInt64(byteBuffer, defaultTextBox); IsoTypeWriter.writeUInt64(byteBuffer, reserved1); byteBuffer.putShort(fontNumber); byteBuffer.putShort(fontFace); byteBuffer.put(reserved2); byteBuffer.putShort(reserved3); IsoTypeWriter.writeUInt16(byteBuffer, foregroundR); IsoTypeWriter.writeUInt16(byteBuffer, foregroundG); IsoTypeWriter.writeUInt16(byteBuffer, foregroundB); if (fontName != null) { IsoTypeWriter.writeUInt8(byteBuffer, fontName.length()); byteBuffer.put(fontName.getBytes()); } writableByteChannel.write((ByteBuffer) byteBuffer.rewind()); // writeContainer(writableByteChannel); there are no child boxes!? } @Override public long getSize() { long s = getContainerSize() + 52 + (fontName != null ? fontName.length() : 0); s += ((largeBox || (s + 8) >= (1L << 32)) ? 16 : 8); return s; } public int getDisplayFlags() { return displayFlags; } public void setDisplayFlags(int displayFlags) { this.displayFlags = displayFlags; } public int getTextJustification() { return textJustification; } public void setTextJustification(int textJustification) { this.textJustification = textJustification; } public int getBackgroundR() { return backgroundR; } public void setBackgroundR(int backgroundR) { this.backgroundR = backgroundR; } public int getBackgroundG() { return backgroundG; } public void setBackgroundG(int backgroundG) { this.backgroundG = backgroundG; } public int getBackgroundB() { return backgroundB; } public void setBackgroundB(int backgroundB) { this.backgroundB = backgroundB; } public long getDefaultTextBox() { return defaultTextBox; } public void setDefaultTextBox(long defaultTextBox) { this.defaultTextBox = defaultTextBox; } public long getReserved1() { return reserved1; } public void setReserved1(long reserved1) { this.reserved1 = reserved1; } public short getFontNumber() { return fontNumber; } public void setFontNumber(short fontNumber) { this.fontNumber = fontNumber; } public short getFontFace() { return fontFace; } public void setFontFace(short fontFace) { this.fontFace = fontFace; } public byte getReserved2() { return reserved2; } public void setReserved2(byte reserved2) { this.reserved2 = reserved2; } public short getReserved3() { return reserved3; } public void setReserved3(short reserved3) { this.reserved3 = reserved3; } public int getForegroundR() { return foregroundR; } public void setForegroundR(int foregroundR) { this.foregroundR = foregroundR; } public int getForegroundG() { return foregroundG; } public void setForegroundG(int foregroundG) { this.foregroundG = foregroundG; } public int getForegroundB() { return foregroundB; } public void setForegroundB(int foregroundB) { this.foregroundB = foregroundB; } public String getFontName() { return fontName; } public void setFontName(String fontName) { this.fontName = fontName; } }




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