Java tutorial
/* * Copyright (C) 2016 Netflix, Inc. * * This file is part of IMF Conversion Utility. * * IMF Conversion Utility is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * IMF Conversion Utility is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with IMF Conversion Utility. If not, see <http://www.gnu.org/licenses/>. */ package com.netflix.imfutility.ttmltostl.stl; import com.netflix.imfutility.ttmltostl.ttml.TimedTextObject; import com.netflix.imfutility.ttmltostl.util.StlTestUtil; import org.apache.commons.lang3.StringUtils; import org.junit.Test; import java.util.Arrays; import static junit.framework.TestCase.assertEquals; import static org.junit.Assert.assertArrayEquals; /** * Tests building of STL GSI block. */ public class StlGsiTest { @Test public void testBlocksAndSize() throws Exception { TimedTextObject tto = StlTestUtil.buildTto("10:00:00:00", "10:00:05:00", "text1", "10:00:05:00", "10:00:10:00", "text2", "10:00:10:00", "10:01:10:00", "text3"); byte[][] stl = StlTestUtil.build(tto, StlTestUtil.getMetadataXml()); assertEquals(2, stl.length); // gsi and tti blocks assertEquals(1024, stl[0].length); // gsi size assertEquals(4 * 128, stl[1].length); // tti size (for 3 captions + subtitle zero) } @Test public void testEmptyBlockAndSize() throws Exception { TimedTextObject tto = StlTestUtil.buildTto(); byte[][] stl = StlTestUtil.build(tto, StlTestUtil.getMetadataXml()); assertEquals(2, stl.length); // gsi and tti blocks assertEquals(1024, stl[0].length); // gsi size assertEquals(128, stl[1].length); // subtitle zero only } @Test public void testGsiAll() throws Exception { TimedTextObject tto = StlTestUtil.buildTto("10:00:15:10", "10:00:16:00", "text1", "10:00:16:00", "10:00:17:00", "text2", "10:00:17:00", "10:01:20:00", "text3"); byte[][] stl = StlTestUtil.build(tto, StlTestUtil.getMetadataXml()); byte[] gsi = stl[0]; assertArrayEquals(new byte[] { 0x38, 0x35, 0x30, // 850 0x53, 0x54, 0x4c, 0x32, 0x35, 0x2e, 0x30, 0x31, // STL25.01 0x31, // 1 - teletext 0x30, 0x30, // 00 - latin 0x30, 0x39 // 09 - English }, Arrays.copyOfRange(gsi, 0, 16)); assertArrayEquals(new byte[] { 0x50, 0x72, 0x6f, 0x67, 0x72, 0x61, 0x6d, 0x6d, 0x65, // 'Programme' as in metadata.xml 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 16, 48)); assertArrayEquals(new byte[] { 0x45, 0x70, 0x69, 0x73, 0x6f, 0x64, 0x65, // 'Episode' as in metadata.xml 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 48, 80)); byte[] translated = new byte[128]; Arrays.fill(translated, (byte) 0x20); assertArrayEquals(translated, Arrays.copyOfRange(gsi, 80, 208)); byte[] slr = new byte[16]; Arrays.fill(slr, (byte) 0x20); assertArrayEquals(slr, Arrays.copyOfRange(gsi, 208, 224)); assertArrayEquals(new byte[] { 0x31, 0x36, 0x30, 0x37, 0x30, 0x38 // creation date as in metadata.xml: }, Arrays.copyOfRange(gsi, 224, 230)); assertArrayEquals(new byte[] { 0x31, 0x36, 0x30, 0x37, 0x30, 0x38 // revision date as in metadata.xml: }, Arrays.copyOfRange(gsi, 230, 236)); assertArrayEquals(new byte[] { 0x30, 0x31 // revision number = 01 }, Arrays.copyOfRange(gsi, 236, 238)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x30, 0x30, 0x34 // number of tti blocks - 3 + subtitle zero = 4 }, Arrays.copyOfRange(gsi, 238, 243)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x30, 0x30, 0x34 // number of subtitles - 3 + subtitle zero = 4 }, Arrays.copyOfRange(gsi, 243, 248)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x31 // number of subtitle groups - 1 }, Arrays.copyOfRange(gsi, 248, 251)); assertArrayEquals(new byte[] { 0x35, 0x38 // number of displayable chars - 58 }, Arrays.copyOfRange(gsi, 251, 253)); assertArrayEquals(new byte[] { 0x31, 0x31 // number of displayable rows - 11 }, Arrays.copyOfRange(gsi, 253, 255)); assertArrayEquals(new byte[] { 0x31 // tc status - 1 }, Arrays.copyOfRange(gsi, 255, 256)); assertArrayEquals(new byte[] { 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x32, 0x30 // start time of program: 10:00:00:20 (as in metadata.xml) }, Arrays.copyOfRange(gsi, 256, 264)); assertArrayEquals(new byte[] { 0x31, 0x30, 0x30, 0x30, 0x31, 0x35, 0x31, 0x30 // start time of subtitles: 10:00:15:10 (as in metadata.xml) }, Arrays.copyOfRange(gsi, 264, 272)); assertArrayEquals(new byte[] { 0x31 // number of disks - 1 }, Arrays.copyOfRange(gsi, 272, 273)); assertArrayEquals(new byte[] { 0x31 // disk seq number - 1 }, Arrays.copyOfRange(gsi, 273, 274)); assertArrayEquals(new byte[] { 0x47, 0x42, 0x52 // country - GBR }, Arrays.copyOfRange(gsi, 274, 277)); assertArrayEquals(new byte[] { 0x4f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x74, 0x6f, 0x72, // Publisher: Originator (as in metadata.xml) 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 277, 309)); assertArrayEquals(new byte[] { 0x44, 0x69, 0x73, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x6f, 0x72, // Editor: Distributor (as in metadata.xml) 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 309, 341)); assertArrayEquals(new byte[] { 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x40, // Contact: account@myemail.com (as in metadata.xml) 0x6d, 0x79, 0x65, 0x6d, 0x61, 0x69, 0x6c, 0x2e, 0x63, 0x6f, 0x6d, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 341, 373)); byte[] spare = new byte[651]; Arrays.fill(spare, (byte) 0x20); assertArrayEquals(spare, Arrays.copyOfRange(gsi, 373, 1024)); } @Test public void testGsiAllEmpty() throws Exception { TimedTextObject tto = StlTestUtil.buildTto(); byte[][] stl = StlTestUtil.build(tto, StlTestUtil.getMetadataXml()); byte[] gsi = stl[0]; assertArrayEquals(new byte[] { 0x38, 0x35, 0x30, // 850 0x53, 0x54, 0x4c, 0x32, 0x35, 0x2e, 0x30, 0x31, // STL25.01 0x31, // 1 - teletext 0x30, 0x30, // 00 - latin 0x30, 0x39 // 09 - English }, Arrays.copyOfRange(gsi, 0, 16)); assertArrayEquals(new byte[] { 0x50, 0x72, 0x6f, 0x67, 0x72, 0x61, 0x6d, 0x6d, 0x65, // 'Programme' as in metadata.xml 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 16, 48)); assertArrayEquals(new byte[] { 0x45, 0x70, 0x69, 0x73, 0x6f, 0x64, 0x65, // 'Episode' as in metadata.xml 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 48, 80)); byte[] translated = new byte[128]; Arrays.fill(translated, (byte) 0x20); assertArrayEquals(translated, Arrays.copyOfRange(gsi, 80, 208)); byte[] slr = new byte[16]; Arrays.fill(slr, (byte) 0x20); assertArrayEquals(slr, Arrays.copyOfRange(gsi, 208, 224)); assertArrayEquals(new byte[] { 0x31, 0x36, 0x30, 0x37, 0x30, 0x38 // creation date as in metadata.xml: }, Arrays.copyOfRange(gsi, 224, 230)); assertArrayEquals(new byte[] { 0x31, 0x36, 0x30, 0x37, 0x30, 0x38 // revision date as in metadata.xml: }, Arrays.copyOfRange(gsi, 230, 236)); assertArrayEquals(new byte[] { 0x30, 0x31 // revision number = 01 }, Arrays.copyOfRange(gsi, 236, 238)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x30, 0x30, 0x31 // 1 subtitle zero }, Arrays.copyOfRange(gsi, 238, 243)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x30, 0x30, 0x31 // 1 subtitle zero }, Arrays.copyOfRange(gsi, 243, 248)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x31 // number of subtitle groups - 1 }, Arrays.copyOfRange(gsi, 248, 251)); assertArrayEquals(new byte[] { 0x35, 0x38 // number of displayable chars - 58 }, Arrays.copyOfRange(gsi, 251, 253)); assertArrayEquals(new byte[] { 0x31, 0x31 // number of displayable rows - 11 }, Arrays.copyOfRange(gsi, 253, 255)); assertArrayEquals(new byte[] { 0x31 // tc status - 1 }, Arrays.copyOfRange(gsi, 255, 256)); assertArrayEquals(new byte[] { 0x31, 0x30, 0x30, 0x30, 0x30, 0x30, 0x32, 0x30 // start time of program: 10:00:00:20 (as in metadata.xml) }, Arrays.copyOfRange(gsi, 256, 264)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30, 0x30 // start time of subtitles: 00:00:00:00 (zero subtitle) }, Arrays.copyOfRange(gsi, 264, 272)); assertArrayEquals(new byte[] { 0x31 // number of disks - 1 }, Arrays.copyOfRange(gsi, 272, 273)); assertArrayEquals(new byte[] { 0x31 // disk seq number - 1 }, Arrays.copyOfRange(gsi, 273, 274)); assertArrayEquals(new byte[] { 0x47, 0x42, 0x52 // country - GBR }, Arrays.copyOfRange(gsi, 274, 277)); assertArrayEquals(new byte[] { 0x4f, 0x72, 0x69, 0x67, 0x69, 0x6e, 0x61, 0x74, 0x6f, 0x72, // Publisher: Originator (as in metadata.xml) 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 277, 309)); assertArrayEquals(new byte[] { 0x44, 0x69, 0x73, 0x74, 0x72, 0x69, 0x62, 0x75, 0x74, 0x6f, 0x72, // Editor: Distributor (as in metadata.xml) 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 309, 341)); assertArrayEquals(new byte[] { 0x61, 0x63, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x40, // Contact: account@myemail.com (as in metadata.xml) 0x6d, 0x79, 0x65, 0x6d, 0x61, 0x69, 0x6c, 0x2e, 0x63, 0x6f, 0x6d, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 341, 373)); byte[] spare = new byte[651]; Arrays.fill(spare, (byte) 0x20); assertArrayEquals(spare, Arrays.copyOfRange(gsi, 373, 1024)); } @Test public void testGsiEncodingCp850() throws Exception { TimedTextObject tto = StlTestUtil.buildTto("10:00:15:10", "10:00:16:00", "text1", "10:00:16:00", "10:00:17:00", "text2", "10:00:17:00", "10:01:20:00", "text3"); byte[][] stl = StlTestUtil.build(tto, StlTestUtil.getMetadataSpecialSymbolsXml()); byte[] gsi = stl[0]; // check fields with special symbols (as defined in metadata.xml): // All symbols in Programme must be valid 850 symbols int ch = Arrays.copyOfRange(gsi, 16, 48)[12] & 0xff; assertArrayEquals(new byte[] { (byte) 0xb8, (byte) 0xa9, (byte) 0xbe, (byte) 0xab, (byte) 0xac, (byte) 0xc7, (byte) 0xb6, (byte) 0xb5, (byte) 0x9c, (byte) 0x9d, (byte) 0x8e, (byte) 0xf5, (byte) 0xf1, (byte) 0xcf, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 16, 48)); // All symbols in Episode are non-valid, so must be replaced with ? assertArrayEquals(new byte[] { 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x3f, 0x58, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20 }, Arrays.copyOfRange(gsi, 48, 80)); } @Test public void testNumberOfSubtitles() throws Exception { // prepare long subtitles, so that one subtitles is stored in two tti blocks TimedTextObject tto = StlTestUtil.buildTto("10:00:00:00", "10:00:05:00", StringUtils.rightPad("test", 200, '1'), // in 2 tti "10:00:05:00", "10:00:10:00", StringUtils.rightPad("test", 300, '2'), // in 3 tti "10:00:10:00", "10:01:10:00", StringUtils.rightPad("test", 400, '3') // in 4 tti ); byte[][] stl = StlTestUtil.build(tto, StlTestUtil.getMetadataXml()); byte[] gsi = stl[0]; assertArrayEquals(new byte[] { 0x30, 0x30, 0x30, 0x31, 0x30 // number of tti blocks - 9 + subtitle zero = 10 }, Arrays.copyOfRange(gsi, 238, 243)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x30, 0x30, 0x34 // number of subtitles - 3 + subtitle zero = 4 }, Arrays.copyOfRange(gsi, 243, 248)); assertArrayEquals(new byte[] { 0x30, 0x30, 0x31 // number of subtitle groups - 1 }, Arrays.copyOfRange(gsi, 248, 251)); } }