1dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/* 2dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Copyright 2008 CoreMedia AG, Hamburg 3dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 4dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Licensed under the Apache License, Version 2.0 (the License); 5dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * you may not use this file except in compliance with the License. 6dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * You may obtain a copy of the License at 7dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 8dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * http://www.apache.org/licenses/LICENSE-2.0 9dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 10dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Unless required by applicable law or agreed to in writing, software 11dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * distributed under the License is distributed on an AS IS BASIS, 12dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * See the License for the specific language governing permissions and 14dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * limitations under the License. 15dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 16dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 17dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupackage com.coremedia.iso.boxes; 18dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 19dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport com.coremedia.iso.IsoTypeReader; 20dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport com.coremedia.iso.IsoTypeWriter; 21dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport com.googlecode.mp4parser.AbstractFullBox; 22dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 23dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport java.nio.ByteBuffer; 24dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 25dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhuimport static com.googlecode.mp4parser.util.CastUtils.l2i; 26dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 27dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu/** 28dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * This box provides a compact marking of the random access points withinthe stream. The table is arranged in 29dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * strictly decreasinf order of sample number. Defined in ISO/IEC 14496-12. 30dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 31dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhupublic class SyncSampleBox extends AbstractFullBox { 32dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public static final String TYPE = "stss"; 33dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 34dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu private long[] sampleNumber; 35dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 36dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public SyncSampleBox() { 37dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu super(TYPE); 38dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 39dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 40dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu /** 41dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * Gives the numbers of the samples that are random access points in the stream. 42dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * 43dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu * @return random access sample numbers. 44dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu */ 45dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public long[] getSampleNumber() { 46dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return sampleNumber; 47dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 48dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 49dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu protected long getContentSize() { 50dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return sampleNumber.length * 4 + 8; 51dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 52dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 53dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu @Override 54dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public void _parseDetails(ByteBuffer content) { 55dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu parseVersionAndFlags(content); 56dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu int entryCount = l2i(IsoTypeReader.readUInt32(content)); 57dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 58dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu sampleNumber = new long[entryCount]; 59dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu for (int i = 0; i < entryCount; i++) { 60dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu sampleNumber[i] = IsoTypeReader.readUInt32(content); 61dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 62dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 63dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 64dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu @Override 65dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu protected void getContent(ByteBuffer byteBuffer) { 66dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu writeVersionAndFlags(byteBuffer); 67dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 68dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu IsoTypeWriter.writeUInt32(byteBuffer, sampleNumber.length); 69dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 70dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu for (long aSampleNumber : sampleNumber) { 71dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu IsoTypeWriter.writeUInt32(byteBuffer, aSampleNumber); 72dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 73dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 74dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 75dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 76dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public String toString() { 77dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu return "SyncSampleBox[entryCount=" + sampleNumber.length + "]"; 78dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 79dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu 80dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu public void setSampleNumber(long[] sampleNumber) { 81dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu this.sampleNumber = sampleNumber; 82dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu } 83dd9eb897ee7c7b507cbdcf80263bb4b5de6966bfTeng-Hui Zhu} 84