/*
* Copyright 2008 CoreMedia AG, 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.coremedia.iso.boxes.sampleentry;
import com.coremedia.iso.IsoTypeReader;
import com.coremedia.iso.IsoTypeWriter;
import com.coremedia.iso.boxes.Box;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* Entry type for timed text samples defined in the timed text specification (ISO/IEC 14496-17).
*/
public class TextSampleEntry extends SampleEntry {
public static final String TYPE1 = "tx3g";
public static final String TYPE_ENCRYPTED = "enct";
/* class TextSampleEntry() extends SampleEntry ('tx3g') {
unsigned int(32) displayFlags;
signed int(8) horizontal-justification;
signed int(8) vertical-justification;
unsigned int(8) background-color-rgba[4];
BoxRecord default-text-box;
StyleRecord default-style;
FontTableBox font-table;
}
*/
private long displayFlags; // 32 bits
private int horizontalJustification; // 8 bit
private int verticalJustification; // 8 bit
private int[] backgroundColorRgba = new int[4]; // 4 bytes
private BoxRecord boxRecord = new BoxRecord();
private StyleRecord styleRecord = new StyleRecord();
public TextSampleEntry(String type) {
super(type);
}
@Override
public void _parseDetails(ByteBuffer content) {
_parseReservedAndDataReferenceIndex(content);
displayFlags = IsoTypeReader.readUInt32(content);
horizontalJustification = IsoTypeReader.readUInt8(content);
verticalJustification = IsoTypeReader.readUInt8(content);
backgroundColorRgba = new int[4];
backgroundColorRgba[0] = IsoTypeReader.readUInt8(content);
backgroundColorRgba[1] = IsoTypeReader.readUInt8(content);
backgroundColorRgba[2] = IsoTypeReader.readUInt8(content);
backgroundColorRgba[3] = IsoTypeReader.readUInt8(content);
boxRecord = new BoxRecord();
boxRecord.parse(content);
styleRecord = new StyleRecord();
styleRecord.parse(content);
_parseChildBoxes(content);
}
protected long getContentSize() {
long contentSize = 18;
contentSize += boxRecord.getSize();
contentSize += styleRecord.getSize();
for (Box boxe : boxes) {
contentSize += boxe.getSize();
}
return contentSize;
}
public String toString() {
return "TextSampleEntry";
}
@Override
protected void getContent(ByteBuffer byteBuffer) {
_writeReservedAndDataReferenceIndex(byteBuffer);
IsoTypeWriter.writeUInt32(byteBuffer, displayFlags);
IsoTypeWriter.writeUInt8(byteBuffer, horizontalJustification);
IsoTypeWriter.writeUInt8(byteBuffer, verticalJustification);
IsoTypeWriter.writeUInt8(byteBuffer, backgroundColorRgba[0]);
IsoTypeWriter.writeUInt8(byteBuffer, backgroundColorRgba[1]);
IsoTypeWriter.writeUInt8(byteBuffer, backgroundColorRgba[2]);
IsoTypeWriter.writeUInt8(byteBuffer, backgroundColorRgba[3]);
boxRecord.getContent(byteBuffer);
styleRecord.getContent(byteBuffer);
_writeChildBoxes(byteBuffer);
}
public BoxRecord getBoxRecord() {
return boxRecord;
}
public void setBoxRecord(BoxRecord boxRecord) {
this.boxRecord = boxRecord;
}
public StyleRecord getStyleRecord() {
return styleRecord;
}
public void setStyleRecord(StyleRecord styleRecord) {
this.styleRecord = styleRecord;
}
public boolean isScrollIn() {
return (displayFlags & 0x00000020) == 0x00000020;
}
public void setScrollIn(boolean scrollIn) {
if (scrollIn) {
displayFlags |= 0x00000020;
} else {
displayFlags &= ~0x00000020;
}
}
public boolean isScrollOut() {
return (displayFlags & 0x00000040) == 0x00000040;
}
public void setScrollOut(boolean scrollOutIn) {
if (scrollOutIn) {
displayFlags |= 0x00000040;
} else {
displayFlags &= ~0x00000040;
}
}
public boolean isScrollDirection() {
return (displayFlags & 0x00000180) == 0x00000180;
}
public void setScrollDirection(boolean scrollOutIn) {
if (scrollOutIn) {
displayFlags |= 0x00000180;
} else {
displayFlags &= ~0x00000180;
}
}
public boolean isContinuousKaraoke() {
return (displayFlags & 0x00000800) == 0x00000800;
}
public void setContinuousKaraoke(boolean continuousKaraoke) {
if (continuousKaraoke) {
displayFlags |= 0x00000800;
} else {
displayFlags &= ~0x00000800;
}
}
public boolean isWriteTextVertically() {
return (displayFlags & 0x00020000) == 0x00020000;
}
public void setWriteTextVertically(boolean writeTextVertically) {
if (writeTextVertically) {
displayFlags |= 0x00020000;
} else {
displayFlags &= ~0x00020000;
}
}
public boolean isFillTextRegion() {
return (displayFlags & 0x00040000) == 0x00040000;
}
public void setFillTextRegion(boolean fillTextRegion) {
if (fillTextRegion) {
displayFlags |= 0x00040000;
} else {
displayFlags &= ~0x00040000;
}
}
public int getHorizontalJustification() {
return horizontalJustification;
}
public void setHorizontalJustification(int horizontalJustification) {
this.horizontalJustification = horizontalJustification;
}
public int getVerticalJustification() {
return verticalJustification;
}
public void setVerticalJustification(int verticalJustification) {
this.verticalJustification = verticalJustification;
}
public int[] getBackgroundColorRgba() {
return backgroundColorRgba;
}
public void setBackgroundColorRgba(int[] backgroundColorRgba) {
this.backgroundColorRgba = backgroundColorRgba;
}
public static class BoxRecord {
int top;
int left;
int bottom;
int right;
public void parse(ByteBuffer in) {
top = IsoTypeReader.readUInt16(in);
left = IsoTypeReader.readUInt16(in);
bottom = IsoTypeReader.readUInt16(in);
right = IsoTypeReader.readUInt16(in);
}
public void getContent(ByteBuffer bb) {
IsoTypeWriter.writeUInt16(bb, top);
IsoTypeWriter.writeUInt16(bb, left);
IsoTypeWriter.writeUInt16(bb, bottom);
IsoTypeWriter.writeUInt16(bb, right);
}
public int getSize() {
return 8;
}
}
/*
class FontRecord {
unsigned int(16) font-ID;
unsigned int(8) font-name-length;
unsigned int(8) font[font-name-length];
}
*/
/*
aligned(8) class StyleRecord {
unsigned int(16) startChar;
unsigned int(16) endChar;
unsigned int(16) font-ID;
unsigned int(8) face-style-flags;
unsigned int(8) font-size;
unsigned int(8) text-color-rgba[4];
}
*/
public static class StyleRecord {
int startChar;
int endChar;
int fontId;
int faceStyleFlags;
int fontSize;
int[] textColor = new int[]{0xff, 0xff, 0xff, 0xff};
public void parse(ByteBuffer in) {
startChar = IsoTypeReader.readUInt16(in);
endChar = IsoTypeReader.readUInt16(in);
fontId = IsoTypeReader.readUInt16(in);
faceStyleFlags = IsoTypeReader.readUInt8(in);
fontSize = IsoTypeReader.readUInt8(in);
textColor = new int[4];
textColor[0] = IsoTypeReader.readUInt8(in);
textColor[1] = IsoTypeReader.readUInt8(in);
textColor[2] = IsoTypeReader.readUInt8(in);
textColor[3] = IsoTypeReader.readUInt8(in);
}
public void getContent(ByteBuffer bb) {
IsoTypeWriter.writeUInt16(bb, startChar);
IsoTypeWriter.writeUInt16(bb, endChar);
IsoTypeWriter.writeUInt16(bb, fontId);
IsoTypeWriter.writeUInt8(bb, faceStyleFlags);
IsoTypeWriter.writeUInt8(bb, fontSize);
IsoTypeWriter.writeUInt8(bb, textColor[0]);
IsoTypeWriter.writeUInt8(bb, textColor[1]);
IsoTypeWriter.writeUInt8(bb, textColor[2]);
IsoTypeWriter.writeUInt8(bb, textColor[3]);
}
public int getSize() {
return 12;
}
}
}