From 6c67d73dc6b9e49bdd406902e533be91db1a3b0a Mon Sep 17 00:00:00 2001
From: Sven Göthel <sgothel@jausoft.com>
Date: Sun, 28 Jan 2024 06:42:50 +0100
Subject: GLMediaPlayer/FFMPEGMediaPlayer: Add working subtitle (text +
ass/saa) support via FFMpeg
TODO:
- We may want to refine subtitle PTS handling
- We may want to support bitmapped subtitles
---
.../com/jogamp/opengl/util/av/ASSEventLine.java | 135 +++++++++++++++++++++
1 file changed, 135 insertions(+)
create mode 100644 src/jogl/classes/com/jogamp/opengl/util/av/ASSEventLine.java
(limited to 'src/jogl/classes/com/jogamp/opengl/util/av/ASSEventLine.java')
diff --git a/src/jogl/classes/com/jogamp/opengl/util/av/ASSEventLine.java b/src/jogl/classes/com/jogamp/opengl/util/av/ASSEventLine.java
new file mode 100644
index 000000000..6389df773
--- /dev/null
+++ b/src/jogl/classes/com/jogamp/opengl/util/av/ASSEventLine.java
@@ -0,0 +1,135 @@
+/**
+ * Copyright 2024 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this list of
+ * conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice, this list
+ * of conditions and the following disclaimer in the documentation and/or other materials
+ * provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.opengl.util.av;
+
+/**
+ * ASS/SAA Event Line of subtitles
+ * <p>
+ * See http://www.tcax.org/docs/ass-specs.htm
+ * </p>
+ */
+public class ASSEventLine {
+ public enum Format {
+ UNKNOWN,
+ /** 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>
+ */
+ FFMPEG,
+ /** Just the plain text part */
+ TEXT
+ };
+ public final Format source;
+ public final int seqnr;
+ public final int pts_start;
+ public final int pts_end;
+ public final int layer;
+ public final String style;
+ public final String name;
+ /** Actual subtitle text */
+ public final String text;
+ /** Number of lines of {@link #text}, i.e. occurrence of {@code \n} + 1. */
+ public final int lines;
+
+ /**
+ * ASS/SAA Event Line ctor
+ * @param fmt input format of {@code ass}, currently only {@link ASSEventLine.Format#FFMPEG} and {@link ASSEventLine.Format#TEXT} is supported
+ * @param ass ASS/SAA compatible event line according to {@code fmt}
+ * @param pts_start pts start in ms, provided for {@link ASSEventLine.Format#FFMPEG} and {@link ASSEventLine.Format#TEXT}
+ * @param pts_end pts end in ms, provided for {@link ASSEventLine.Format#FFMPEG} and {@link ASSEventLine.Format#TEXT}
+ */
+ public ASSEventLine(final Format fmt, final String ass, final int pts_start, final int pts_end) {
+ this.source = fmt;
+ int seqnr = 0;
+ int layer = 0;
+ String style = "Default";
+ String name = "";
+ String text = "";
+ if( Format.FFMPEG == fmt ) {
+ final int len = null != ass ? ass.length() : 0;
+ int part = 0;
+ for(int i=0; 9 > part && len > i; ) {
+ if( 8 == part ) {
+ text = ass.substring(i);
+ } else {
+ final int j = ass.indexOf(',', i);
+ if( 0 > j ) {
+ break;
+ }
+ final String v = ass.substring(i, j);
+ switch(part) {
+ case 0:
+ seqnr = Integer.valueOf(v);
+ break;
+ case 1:
+ layer = Integer.valueOf(v);
+ break;
+ case 2:
+ style = v;
+ break;
+ case 3:
+ name = v;
+ break;
+ }
+ i = j + 1;
+ }
+ ++part;
+ }
+ } else if( Format.TEXT == fmt ) {
+ text = ass;
+ }
+ this.seqnr = seqnr;
+ this.pts_start = pts_start;
+ this.pts_end = pts_end;
+ this.layer = layer;
+ this.style = style;
+ this.name = name;
+ this.text = text.replace("\\N", "\n");
+ {
+ final int len = this.text.length();
+ int lc = 1;
+ for(int i=0; len > i; ) {
+ final int j = this.text.indexOf("\n", i);
+ if( 0 > j ) {
+ break;
+ }
+ ++lc;
+ i = j + 1;
+ }
+ this.lines = lc;
+ }
+ }
+ public int getDuration() { return pts_end - pts_start + 1; }
+
+ @Override
+ public String toString() {
+ return "ASS["+source+", #"+seqnr+", l_"+layer+", ["+pts_start+".."+pts_end+"] "+getDuration()+" ms, style "+style+", name '"+name+"': '"+text+"' ("+lines+")]";
+ }
+}
--
cgit v1.2.3