/** Validates the parameters before building a controller. */
protected void validate() {
Preconditions.checkState(
(mMultiImageRequests == null) || (mImageRequest == null),
"Cannot specify both ImageRequest and FirstAvailableImageRequests!");
Preconditions.checkState(
(mDataSourceSupplier == null)
|| (mMultiImageRequests == null
&& mImageRequest == null
&& mLowResImageRequest == null),
"Cannot specify DataSourceSupplier with other ImageRequests! Use one or the other.");
}
/**
* Creates a new inputstream instance over the specific memory chunk.
*
* @param nativeMemoryChunk the native memory chunk
* @param startOffset start offset within the memory chunk
* @param length length of subchunk
*/
public NativeMemoryChunkInputStream(
NativeMemoryChunk nativeMemoryChunk, int startOffset, int length) {
super();
Preconditions.checkState(startOffset >= 0);
Preconditions.checkState(length >= 0);
mMemoryChunk = Preconditions.checkNotNull(nativeMemoryChunk);
mStartOffset = startOffset;
mEndOffset =
startOffset + length > nativeMemoryChunk.getSize()
? nativeMemoryChunk.getSize()
: startOffset + length;
mOffset = startOffset;
mMark = startOffset;
}
