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tjDecompressHeader3(): Accept tables-only streams

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Inspired by:
b3b15cfe74

Closes #604
Closes #605
This commit is contained in:
DRC
2022-06-24 14:03:03 -05:00
parent a405519e96
commit ba22c0f76d
17 changed files with 81 additions and 38 deletions
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19
java/org/libjpegturbo/turbojpeg/TJDecompressor.java
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@@ -1,5 +1,5 @@
/*
* Copyright (C)2011-2015, 2018 D. R. Commander. All Rights Reserved.
* Copyright (C)2011-2015, 2018, 2022 D. R. Commander. All Rights Reserved.
* Copyright (C)2015 Viktor Szathmáry. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -89,11 +89,20 @@ public class TJDecompressor implements Closeable {
}
/**
* Associate the JPEG image of length <code>imageSize</code> bytes stored in
* <code>jpegImage</code> with this decompressor instance. This image will
* be used as the source image for subsequent decompress operations.
* Associate the JPEG image or "abbreviated table specification" (AKA
* "tables-only") datastream of length <code>imageSize</code> bytes stored in
* <code>jpegImage</code> with this decompressor instance. If
* <code>jpegImage</code> contains a JPEG image, then this image will be used
* as the source image for subsequent decompress operations. Passing a
* tables-only datastream to this method primes the decompressor with
* quantization and Huffman tables that can be used when decompressing
* subsequent "abbreviated image" datastreams. This is useful, for instance,
* when decompressing video streams in which all frames share the same
* quantization and Huffman tables.
*
* @param jpegImage JPEG image buffer. This buffer is not modified.
* @param jpegImage buffer containing a JPEG image or an "abbreviated table
* specification" (AKA "tables-only") datastream. This buffer is not
* modified.
*
* @param imageSize size of the JPEG image (in bytes)
*/