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package com.jogamp.opengl.util.av;
import com.jogamp.common.av.PTS;
/**
* Generic subtitle event
* <p>
* It is mandatory that the receiver {@link #release()} this instance
* after processing, allowing the resource owner to free or reuse it.
* </p>
*/
public abstract class SubtitleEvent {
/** {@link SubtitleEvent} Implementation Type */
public enum Type {
/** {@link SubTextEvent} */
Text,
/** {@link SubBitmapEvent} */
Bitmap,
/** {@link SubEmptyEvent} */
Empty
};
/** Implementation {@link Type} of this instance. */
public final Type type;
/** {@link CodecID} of this subtitle event. */
public final CodecID codec;
/** Language code, supposed to be 3-letters of `ISO 639-2 language codes` */
public final String lang;
/** PTS start time in milliseconds to start showing this subtitle event. */
public final int pts_start;
/**
* PTS end time in milliseconds to end showing this subtitle event.
* <p>
* {@link SubBitmapEvent} often (e.g. {@link CodecID#HDMV_PGS}) have an infinite end-time, i.e. ({@link Integer#MAX_VALUE},
* and shall be overwritten by the next one or {@link SubEmptyEvent}.
* </p>
* @see #isEndDefined()
*/
public final int pts_end;
/**
*
* @param type
* @param codec the {@link CodecID}
* @param lang language code, supposed to be 3-letters of `ISO 639-2 language codes`
* @param pts_start pts start in ms, see {@link #pts_start}
* @param pts_end pts end in ms, see {@link #pts_end}
*/
public SubtitleEvent(final Type type, final CodecID codec, final String lang, final int pts_start, final int pts_end) {
this.type = type;
this.codec = codec;
this.lang = lang;
this.pts_start = pts_start;
this.pts_end = pts_end;
}
/** Release the resources, if any, back to the owner. */
public abstract void release();
public final int getDuration() { return pts_end - pts_start + 1; }
/** See {@link #pts_end}. */
public final boolean isEndDefined() { return pts_end < Integer.MAX_VALUE; }
public final String getStartString() {
final boolean ied = isEndDefined();
final String pts_start_s = 0 <= pts_start ? PTS.toTimeStr(pts_start, true) : "undef";
final String pts_end_s = 0 <= pts_end && ied ? PTS.toTimeStr(pts_end, true) : "undef";
return "Sub[codec "+codec+", lang '"+lang+"', type "+type+", ["+pts_start_s+".."+pts_end_s+"] "+(ied?getDuration():"undef")+" ms";
}
}
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