diff options
Diffstat (limited to 'isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base')
5 files changed, 283 insertions, 0 deletions
diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/ByteBufferByteChannel.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/ByteBufferByteChannel.java.svn-base new file mode 100644 index 0000000..9f3264b --- /dev/null +++ b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/ByteBufferByteChannel.java.svn-base @@ -0,0 +1,56 @@ +/* + * Copyright 2012 Sebastian Annies, Hamburg + * + * Licensed under the Apache License, Version 2.0 (the License); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.googlecode.mp4parser.util; + +import java.io.EOFException; +import java.io.IOException; +import java.nio.ByteBuffer; +import java.nio.channels.ByteChannel; + +/** + * Creates a <code>ReadableByteChannel</code> that is backed by a <code>ByteBuffer</code>. + */ +public class ByteBufferByteChannel implements ByteChannel { + ByteBuffer byteBuffer; + + public ByteBufferByteChannel(ByteBuffer byteBuffer) { + this.byteBuffer = byteBuffer; + } + + public int read(ByteBuffer dst) throws IOException { + byte[] b = dst.array(); + int r = dst.remaining(); + if (byteBuffer.remaining() >= r) { + byteBuffer.get(b, dst.position(), r); + return r; + } else { + throw new EOFException("Reading beyond end of stream"); + } + } + + public boolean isOpen() { + return true; + } + + public void close() throws IOException { + } + + public int write(ByteBuffer src) throws IOException { + int r = src.remaining(); + byteBuffer.put(src); + return r; + } +} diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/CastUtils.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/CastUtils.java.svn-base new file mode 100644 index 0000000..2dd011a --- /dev/null +++ b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/CastUtils.java.svn-base @@ -0,0 +1,34 @@ +/* + * Copyright 2012 Sebastian Annies, Hamburg + * + * Licensed under the Apache License, Version 2.0 (the License); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.googlecode.mp4parser.util; + + +public class CastUtils { + /** + * Casts a long to an int. In many cases I use a long for a UInt32 but this cannot be used to allocate + * ByteBuffers or arrays since they restricted to <code>Integer.MAX_VALUE</code> this cast-method will throw + * a RuntimeException if the cast would cause a loss of information. + * + * @param l the long value + * @return the long value as int + */ + public static int l2i(long l) { + if (l > Integer.MAX_VALUE || l < Integer.MIN_VALUE) { + throw new RuntimeException("A cast to int has gone wrong. Please contact the mp4parser discussion group (" + l + ")"); + } + return (int) l; + } +} diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/Math.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/Math.java.svn-base new file mode 100644 index 0000000..27fd4b2 --- /dev/null +++ b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/Math.java.svn-base @@ -0,0 +1,30 @@ +package com.googlecode.mp4parser.util; + +public class Math { + public static long gcd(long a, long b) { + while (b > 0) { + long temp = b; + b = a % b; // % is remainder + a = temp; + } + return a; + } + + public static int gcd(int a, int b) { + while (b > 0) { + int temp = b; + b = a % b; // % is remainder + a = temp; + } + return a; + } + + public static long lcm(long a, long b) { + return a * (b / gcd(a, b)); + } + + public static int lcm(int a, int b) { + return a * (b / gcd(a, b)); + } + +} diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/Path.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/Path.java.svn-base new file mode 100644 index 0000000..a6066c8 --- /dev/null +++ b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/Path.java.svn-base @@ -0,0 +1,115 @@ +/* + * Copyright 2012 Sebastian Annies, Hamburg + * + * Licensed under the Apache License, Version 2.0 (the License); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.googlecode.mp4parser.util; + + +import com.coremedia.iso.IsoFile; +import com.coremedia.iso.boxes.Box; +import com.coremedia.iso.boxes.ContainerBox; + +import java.util.Collections; +import java.util.LinkedList; +import java.util.List; +import java.util.regex.Matcher; +import java.util.regex.Pattern; + +public class Path { + + private Path() { + } + + static Pattern component = Pattern.compile("(....|\\.\\.)(\\[(.*)\\])?"); + + public static String createPath(Box box) { + return createPath(box, ""); + } + + private static String createPath(Box box, String path) { + if (box instanceof IsoFile) { + return path; + } else { + List<?> boxesOfBoxType = box.getParent().getBoxes(box.getClass()); + int index = boxesOfBoxType.indexOf(box); + path = String.format("/%s[%d]", box.getType(), index) + path; + + return createPath(box.getParent(), path); + } + } + + public static Box getPath(Box box, String path) { + List<Box> all = getPaths(box, path); + return all.isEmpty() ? null : all.get(0); + } + + + public static List<Box> getPaths(Box box, String path) { + if (path.startsWith("/")) { + Box isoFile = box; + while (isoFile.getParent() != null) { + isoFile = isoFile.getParent(); + } + assert isoFile instanceof IsoFile : isoFile.getType() + " has no parent"; + return getPaths(isoFile, path.substring(1)); + } else if (path.isEmpty()) { + return Collections.singletonList(box); + } else { + String later; + String now; + if (path.contains("/")) { + later = path.substring(path.indexOf('/') + 1); + now = path.substring(0, path.indexOf('/')); + } else { + now = path; + later = ""; + } + + Matcher m = component.matcher(now); + if (m.matches()) { + String type = m.group(1); + if ("..".equals(type)) { + return getPaths(box.getParent(), later); + } else { + int index = -1; + if (m.group(2) != null) { + // we have a specific index + String indexString = m.group(3); + index = Integer.parseInt(indexString); + } + List<Box> children = new LinkedList<Box>(); + int currentIndex = 0; + for (Box box1 : ((ContainerBox) box).getBoxes()) { + if (box1.getType().matches(type)) { + if (index == -1 || index == currentIndex) { + children.addAll(getPaths(box1, later)); + } + currentIndex++; + } + } + return children; + } + } else { + throw new RuntimeException(now + " is invalid path."); + } + } + + } + + + public static boolean isContained(Box box, String path) { + assert path.startsWith("/") : "Absolute path required"; + return getPaths(box, path).contains(box); + } +} diff --git a/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/UUIDConverter.java.svn-base b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/UUIDConverter.java.svn-base new file mode 100644 index 0000000..635e4c1 --- /dev/null +++ b/isoparser/src/main/java/com/googlecode/mp4parser/util/.svn/text-base/UUIDConverter.java.svn-base @@ -0,0 +1,48 @@ +/* + * Copyright 2012 Sebastian Annies, Hamburg + * + * Licensed under the Apache License, Version 2.0 (the License); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an AS IS BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package com.googlecode.mp4parser.util; + +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.util.UUID; + +/** + * UUID from/to byte array. + */ +public class UUIDConverter { + public static byte[] convert(UUID uuid) { + + long msb = uuid.getMostSignificantBits(); + long lsb = uuid.getLeastSignificantBits(); + byte[] buffer = new byte[16]; + + for (int i = 0; i < 8; i++) { + buffer[i] = (byte) (msb >>> 8 * (7 - i)); + } + for (int i = 8; i < 16; i++) { + buffer[i] = (byte) (lsb >>> 8 * (7 - i)); + } + + return buffer; + + } + + public static UUID convert(byte[] uuidBytes) { + ByteBuffer b = ByteBuffer.wrap(uuidBytes); + b.order(ByteOrder.BIG_ENDIAN); + return new UUID(b.getLong(), b.getLong()); + } +} |