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package com.jogamp.opengl.util.av;
/**
* 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 {
public enum Format {
/** Denoting an {@link SubEmptyEvent}, usually used for PGS bitmap subtitle signaling end of previous {@link SubTextureEvent}. */
EMPTY,
/** Denoting {@link SubASSEventLine} using FFMpeg output w/o start, end:
* <pre>
0 1 2 3 4 5 6 7 8
Seq, Layer, Style, Name, MarginL, MarginR, MarginV, Effect, TEXT
* </pre>
*/
ASS_FFMPEG,
/** Denoting {@link SubASSEventLine}, just the plain text part */
ASS_TEXT,
/** Denoting {@link SubTextureEvent}, a bitmap'ed subtitle requiring a texture */
TEXTURE
};
/** {@link Format} of this subtitle event. */
public final Format type;
/** PTS start time to start showing this subtitle event. */
public final int pts_start;
/**
* PTS start time to end showing this subtitle event.
* <p>
* PGS {@link SubTextureEvent} 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;
public SubtitleEvent(final Format fmt, final int pts_start, final int pts_end) {
this.type = fmt;
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 boolean isASS() { return Format.ASS_FFMPEG == type || Format.ASS_TEXT == type; }
public final boolean isTexture() { return Format.TEXTURE == type; }
public final boolean isEmpty() { return Format.EMPTY == type; }
public final String getStartString() {
final boolean ied = isEndDefined();
return "Sub["+type+", ["+pts_start+".."+(ied?pts_end:"undef")+"] "+(ied?getDuration():"undef")+" ms";
}
}
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