com.android.tools.build.apkzlib.zip.compress

Class BestAndDefaultDeflateExecutorCompressor

java.lang.Object

com.android.tools.build.apkzlib.zip.compress.ExecutorCompressor

com.android.tools.build.apkzlib.zip.compress.BestAndDefaultDeflateExecutorCompressor

All Implemented Interfaces:

Compressor

public class BestAndDefaultDeflateExecutorCompressor
extends ExecutorCompressor

Compressor that tries both the best and default compression algorithms and picks the default unless the best is at least a given percentage smaller.

Constructor Summary

Constructors

Constructor and Description
BestAndDefaultDeflateExecutorCompressor(java.util.concurrent.Executor executor, ByteTracker tracker, double minRatio) Creates a new compressor.

Method Summary

Modifier and Type	Method and Description
protected CompressionResult	immediateCompress(CloseableByteSource source) Immediately compresses a source.

Methods inherited from class com.android.tools.build.apkzlib.zip.compress.ExecutorCompressor

compress

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BestAndDefaultDeflateExecutorCompressor

public BestAndDefaultDeflateExecutorCompressor(@Nonnull
                                               java.util.concurrent.Executor executor,
                                               @Nonnull
                                               ByteTracker tracker,
                                               double minRatio)

Creates a new compressor.

Parameters:

executor - the executor used to perform compression activities.

tracker - the byte tracker to keep track of allocated bytes

minRatio - the minimum best compression size / default compression size needed to pick the default compression size; if 0.0 then the default compression is always picked, if 1.0 then the best compression is always picked unless it produces the exact same size as the default compression.

Method Detail

immediateCompress

@Nonnull
protected CompressionResult immediateCompress(@Nonnull
                                                       CloseableByteSource source)
                                                throws java.lang.Exception

Description copied from class: ExecutorCompressor

Immediately compresses a source.

Specified by:

immediateCompress in class ExecutorCompressor

Parameters:

source - the source to compress

Returns:

the result of compression

Throws:

java.lang.Exception - failed to compress