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author | Mark Wielaard <mark@gcc.gnu.org> | 2005-11-15 23:20:01 +0000 |
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committer | Mark Wielaard <mark@gcc.gnu.org> | 2005-11-15 23:20:01 +0000 |
commit | 8f523f3a1047919d3563daf1ef47ba87336ebe89 (patch) | |
tree | a5eb7cf42a51869cc8aa1fad7ad6a90cca47fdd8 /libjava/classpath/javax/sound/sampled/DataLine.java | |
parent | 02e549bfaaec38f68307e7f34e46ea57ea1809af (diff) | |
download | gcc-8f523f3a1047919d3563daf1ef47ba87336ebe89.zip gcc-8f523f3a1047919d3563daf1ef47ba87336ebe89.tar.gz gcc-8f523f3a1047919d3563daf1ef47ba87336ebe89.tar.bz2 |
Imported GNU Classpath 0.19 + gcj-import-20051115.
* sources.am: Regenerated.
* Makefile.in: Likewise.
* scripts/makemake.tcl: Use glob -nocomplain.
From-SVN: r107049
Diffstat (limited to 'libjava/classpath/javax/sound/sampled/DataLine.java')
-rw-r--r-- | libjava/classpath/javax/sound/sampled/DataLine.java | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/libjava/classpath/javax/sound/sampled/DataLine.java b/libjava/classpath/javax/sound/sampled/DataLine.java new file mode 100644 index 0000000..f755958 --- /dev/null +++ b/libjava/classpath/javax/sound/sampled/DataLine.java @@ -0,0 +1,265 @@ +/* + Copyright (C) 2005 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath 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 2, or (at your option) +any later version. + +GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +02110-1301 USA. + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package javax.sound.sampled; + +/** + * The DataLine interface adds data-related functionality to the Line + * interface. For example, it adds methods to start and stop the data + * on the line. + * @since 1.3 + */ +public interface DataLine extends Line +{ + /** + * This class extends Line.Info with information specific to DataLine. + * In particular it adds information about buffer sizes, and about supported + * audio formats. + * @since 1.3 + */ + class Info extends Line.Info + { + private int minBufferSize; + private int maxBufferSize; + private AudioFormat[] formats; + + /** + * Create a new Info given the line's class and a supported + * audio format. The buffer sizes default to AudioSystem.NOT_SPECIFIED. + * @param klass the class of the line + * @param fmt the supported format + */ + public Info(Class klass, AudioFormat fmt) + { + super(klass); + this.minBufferSize = AudioSystem.NOT_SPECIFIED; + this.maxBufferSize = AudioSystem.NOT_SPECIFIED; + this.formats = new AudioFormat[] { fmt }; + } + + /** + * Create a new Info given the line's class, the supported audio formats, + * the minimum buffer size, and the maximum buffer size. + * @param klass the class of the linee + * @param fmts the supported audio formats + * @param minSize the minimum buffer size + * @param maxSize the maximum buffer size + */ + public Info(Class klass, AudioFormat[] fmts, int minSize, int maxSize) + { + super(klass); + this.minBufferSize = minSize; + this.maxBufferSize = maxSize; + this.formats = fmts; + } + + /** + * Create a new Info given the line's class, a supported + * audio format, and a buffer size. Both the minimum and maximum + * sizes are set from this size. + * @param klass the class of the line + * @param fmt the supported format + * @param size the buffer size + */ + public Info(Class klass, AudioFormat fmt, int size) + { + super(klass); + this.minBufferSize = size; + this.maxBufferSize = size; + this.formats = new AudioFormat[] { fmt }; + } + + /** + * Return the supported audio formats. + */ + public AudioFormat[] getFormats() + { + // FIXME: clone? + return formats; + } + + /** + * Return the maximum buffer size. + */ + public int getMaxBufferSize() + { + return maxBufferSize; + } + + /** + * Return the minimum buffer size. + */ + public int getMinBufferSize() + { + return minBufferSize; + } + + /** + * Return true if the indicated audio format is supported by this + * Info, false otherwise. + * @param fmt the audio format + * @return true if the format is supported + */ + public boolean isFormatSupported(AudioFormat fmt) + { + for (int i = 0; i < formats.length; ++i) + { + if (fmt.matches(formats[i])) + return true; + } + return false; + } + + /** + * Return true if this Info matches another Info object. + */ + public boolean matches(Line.Info o) + { + if (! super.matches(o) || ! (o instanceof Info)) + return false; + Info other = (Info) o; + if (minBufferSize < other.minBufferSize + || maxBufferSize > other.maxBufferSize) + return false; + for (int i = 0; i < formats.length; ++i) + { + boolean ok = false; + for (int j = 0; j < other.formats.length; ++j) + { + if (formats[i].matches(other.formats[j])) + { + ok = true; + break; + } + } + if (! ok) + return false; + } + return true; + } + + /** + * Return a description of this Info object. + */ + public String toString() + { + StringBuffer result = new StringBuffer(); + result.append("formats: ["); + for (int i = 0; i < formats.length; ++i) + { + if (i > 0) + result.append(", "); + result.append(formats[i].toString()); + } + result.append("]; minBufferSize: "); + result.append(minBufferSize); + result.append("; maxBufferSize: "); + result.append(maxBufferSize); + return result.toString(); + } + } + + /** + * Return the number of bytes currently available on this DataLine. + */ + int available(); + + /** + * This method blocks until whatever data is buffered in the + * DataLine's internal buffer has been drained. + */ + void drain(); + + /** + * This flushes the DataLine by discarding any buffered data. + */ + void flush(); + + /** + * Returns the size of the DataLine's internal buffer, in bytes. + */ + int getBufferSize(); + + /** + * Return the current format of the data associated with this DataLine. + */ + AudioFormat getFormat(); + + /** + * Return the current frame position. + */ + int getFramePosition(); + + /** + * Return the volume level for this DataLine. + */ + float getLevel(); + + /** + * Return the current frame position. + * @since 1.5 + */ + long getLongFramePosition(); + + /** + * Return the number of microseconds this DataLine has been playing. + */ + long getMicrosecondPosition(); + + /** + * Return true if this line is active, meaning that it is actively + * performing audio I/O. + */ + boolean isActive(); + + /** + * Return true if this line is running, meaning that it has been + * started. When the line is stopped, this method will return false. + */ + boolean isRunning(); + + /** + * Start processing data. This will emit a START event. + */ + void start(); + + /** + * Stop processing data. This will emit a STOP event. + */ + void stop(); +} |