19c791cdac
With rare exceptions ...
- Always separate line continuation characters by one space from
preceding code.
- Always use two-space indentation. Never use tabs.
- Always use K&R-style conditional blocks.
- Always surround operators with spaces, except in raw assembly code.
- Always put a space after, but not before, a comma.
- Never put a space between type casts and variables/function calls.
- Never put a space between the function name and the argument list in
function declarations and prototypes.
- Always surround braces ('{' and '}') with spaces.
- Always surround statements (if, for, else, catch, while, do, switch)
with spaces.
- Always attach pointer symbols ('*' and '**') to the variable or
function name.
- Always precede pointer symbols ('*' and '**') by a space in type
casts.
- Use the MIN() macro from jpegint.h within the libjpeg and TurboJPEG
API libraries (using min() from tjutil.h is still necessary for
TJBench.)
- Where it makes sense (particularly in the TurboJPEG code), put a blank
line after variable declaration blocks.
- Always separate statements in one-liners by two spaces.
The purpose of this was to ease maintenance on my part and also to make
it easier for contributors to figure out how to format patch
submissions. This was admittedly confusing (even to me sometimes) when
we had 3 or 4 different style conventions in the same source tree. The
new convention is more consistent with the formatting of other OSS code
bases.
This commit corrects deviations from the chosen formatting style in the
libjpeg API code and reformats the TurboJPEG API code such that it
conforms to the same standard.
NOTES:
- Although it is no longer necessary for the function name in function
declarations to begin in Column 1 (this was historically necessary
because of the ansi2knr utility, which allowed libjpeg to be built
with non-ANSI compilers), we retain that formatting for the libjpeg
code because it improves readability when using libjpeg's function
attribute macros (GLOBAL(), etc.)
- This reformatting project was accomplished with the help of AStyle and
Uncrustify, although neither was completely up to the task, and thus
a great deal of manual tweaking was required. Note to developers of
code formatting utilities: the libjpeg-turbo code base is an
excellent test bed, because AFAICT, it breaks every single one of the
utilities that are currently available.
- The legacy (MMX, SSE, 3DNow!) assembly code for i386 has been
formatted to match the SSE2 code (refer to
ff5685d5344273df321eb63a005eaae19d2496e3.) I hadn't intended to
bother with this, but the Loongson MMI implementation demonstrated
that there is still academic value to the MMX implementation, as an
algorithmic model for other 64-bit vector implementations. Thus, it
is desirable to improve its readability in the same manner as that of
the SSE2 implementation.
577 lines
22 KiB
Java
577 lines
22 KiB
Java
/*
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* Copyright (C)2011-2013, 2017 D. R. Commander. All Rights Reserved.
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* Copyright (C)2015 Viktor Szathmáry. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the libjpeg-turbo Project nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.libjpegturbo.turbojpeg;
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/**
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* TurboJPEG utility class (cannot be instantiated)
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*/
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public final class TJ {
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/**
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* The number of chrominance subsampling options
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*/
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public static final int NUMSAMP = 6;
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/**
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* 4:4:4 chrominance subsampling (no chrominance subsampling). The JPEG
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* or YUV image will contain one chrominance component for every pixel in the
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* source image.
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*/
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public static final int SAMP_444 = 0;
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/**
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* 4:2:2 chrominance subsampling. The JPEG or YUV image will contain one
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* chrominance component for every 2x1 block of pixels in the source image.
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*/
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public static final int SAMP_422 = 1;
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/**
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* 4:2:0 chrominance subsampling. The JPEG or YUV image will contain one
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* chrominance component for every 2x2 block of pixels in the source image.
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*/
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public static final int SAMP_420 = 2;
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/**
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* Grayscale. The JPEG or YUV image will contain no chrominance components.
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*/
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public static final int SAMP_GRAY = 3;
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/**
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* 4:4:0 chrominance subsampling. The JPEG or YUV image will contain one
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* chrominance component for every 1x2 block of pixels in the source image.
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* Note that 4:4:0 subsampling is not fully accelerated in libjpeg-turbo.
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*/
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public static final int SAMP_440 = 4;
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/**
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* 4:1:1 chrominance subsampling. The JPEG or YUV image will contain one
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* chrominance component for every 4x1 block of pixels in the source image.
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* JPEG images compressed with 4:1:1 subsampling will be almost exactly the
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* same size as those compressed with 4:2:0 subsampling, and in the
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* aggregate, both subsampling methods produce approximately the same
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* perceptual quality. However, 4:1:1 is better able to reproduce sharp
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* horizontal features. Note that 4:1:1 subsampling is not fully accelerated
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* in libjpeg-turbo.
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*/
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public static final int SAMP_411 = 5;
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/**
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* Returns the MCU block width for the given level of chrominance
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* subsampling.
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*
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* @param subsamp the level of chrominance subsampling (one of
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* <code>SAMP_*</code>)
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*
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* @return the MCU block width for the given level of chrominance
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* subsampling.
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*/
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public static int getMCUWidth(int subsamp) {
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checkSubsampling(subsamp);
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return mcuWidth[subsamp];
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}
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private static final int[] mcuWidth = {
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8, 16, 16, 8, 8, 32
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};
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/**
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* Returns the MCU block height for the given level of chrominance
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* subsampling.
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*
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* @param subsamp the level of chrominance subsampling (one of
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* <code>SAMP_*</code>)
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*
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* @return the MCU block height for the given level of chrominance
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* subsampling.
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*/
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public static int getMCUHeight(int subsamp) {
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checkSubsampling(subsamp);
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return mcuHeight[subsamp];
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}
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private static final int[] mcuHeight = {
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8, 8, 16, 8, 16, 8
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};
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/**
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* The number of pixel formats
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*/
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public static final int NUMPF = 12;
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/**
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* RGB pixel format. The red, green, and blue components in the image are
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* stored in 3-byte pixels in the order R, G, B from lowest to highest byte
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* address within each pixel.
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*/
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public static final int PF_RGB = 0;
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/**
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* BGR pixel format. The red, green, and blue components in the image are
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* stored in 3-byte pixels in the order B, G, R from lowest to highest byte
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* address within each pixel.
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*/
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public static final int PF_BGR = 1;
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/**
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* RGBX pixel format. The red, green, and blue components in the image are
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* stored in 4-byte pixels in the order R, G, B from lowest to highest byte
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* address within each pixel. The X component is ignored when compressing
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* and undefined when decompressing.
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*/
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public static final int PF_RGBX = 2;
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/**
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* BGRX pixel format. The red, green, and blue components in the image are
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* stored in 4-byte pixels in the order B, G, R from lowest to highest byte
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* address within each pixel. The X component is ignored when compressing
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* and undefined when decompressing.
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*/
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public static final int PF_BGRX = 3;
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/**
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* XBGR pixel format. The red, green, and blue components in the image are
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* stored in 4-byte pixels in the order R, G, B from highest to lowest byte
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* address within each pixel. The X component is ignored when compressing
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* and undefined when decompressing.
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*/
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public static final int PF_XBGR = 4;
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/**
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* XRGB pixel format. The red, green, and blue components in the image are
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* stored in 4-byte pixels in the order B, G, R from highest to lowest byte
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* address within each pixel. The X component is ignored when compressing
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* and undefined when decompressing.
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*/
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public static final int PF_XRGB = 5;
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/**
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* Grayscale pixel format. Each 1-byte pixel represents a luminance
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* (brightness) level from 0 to 255.
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*/
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public static final int PF_GRAY = 6;
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/**
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* RGBA pixel format. This is the same as {@link #PF_RGBX}, except that when
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* decompressing, the X byte is guaranteed to be 0xFF, which can be
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* interpreted as an opaque alpha channel.
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*/
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public static final int PF_RGBA = 7;
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/**
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* BGRA pixel format. This is the same as {@link #PF_BGRX}, except that when
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* decompressing, the X byte is guaranteed to be 0xFF, which can be
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* interpreted as an opaque alpha channel.
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*/
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public static final int PF_BGRA = 8;
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/**
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* ABGR pixel format. This is the same as {@link #PF_XBGR}, except that when
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* decompressing, the X byte is guaranteed to be 0xFF, which can be
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* interpreted as an opaque alpha channel.
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*/
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public static final int PF_ABGR = 9;
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/**
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* ARGB pixel format. This is the same as {@link #PF_XRGB}, except that when
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* decompressing, the X byte is guaranteed to be 0xFF, which can be
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* interpreted as an opaque alpha channel.
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*/
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public static final int PF_ARGB = 10;
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/**
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* CMYK pixel format. Unlike RGB, which is an additive color model used
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* primarily for display, CMYK (Cyan/Magenta/Yellow/Key) is a subtractive
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* color model used primarily for printing. In the CMYK color model, the
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* value of each color component typically corresponds to an amount of cyan,
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* magenta, yellow, or black ink that is applied to a white background. In
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* order to convert between CMYK and RGB, it is necessary to use a color
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* management system (CMS.) A CMS will attempt to map colors within the
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* printer's gamut to perceptually similar colors in the display's gamut and
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* vice versa, but the mapping is typically not 1:1 or reversible, nor can it
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* be defined with a simple formula. Thus, such a conversion is out of scope
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* for a codec library. However, the TurboJPEG API allows for compressing
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* CMYK pixels into a YCCK JPEG image (see {@link #CS_YCCK}) and
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* decompressing YCCK JPEG images into CMYK pixels.
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*/
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public static final int PF_CMYK = 11;
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/**
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* Returns the pixel size (in bytes) for the given pixel format.
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*
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* @param pixelFormat the pixel format (one of <code>PF_*</code>)
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*
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* @return the pixel size (in bytes) for the given pixel format.
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*/
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public static int getPixelSize(int pixelFormat) {
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checkPixelFormat(pixelFormat);
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return pixelSize[pixelFormat];
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}
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private static final int[] pixelSize = {
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3, 3, 4, 4, 4, 4, 1, 4, 4, 4, 4, 4
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};
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/**
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* For the given pixel format, returns the number of bytes that the red
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* component is offset from the start of the pixel. For instance, if a pixel
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* of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>,
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* then the red component will be
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* <code>pixel[TJ.getRedOffset(TJ.PF_BGRX)]</code>.
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*
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* @param pixelFormat the pixel format (one of <code>PF_*</code>)
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*
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* @return the red offset for the given pixel format, or -1 if the pixel
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* format does not have a red component.
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*/
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public static int getRedOffset(int pixelFormat) {
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checkPixelFormat(pixelFormat);
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return redOffset[pixelFormat];
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}
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private static final int[] redOffset = {
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0, 2, 0, 2, 3, 1, -1, 0, 2, 3, 1, -1
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};
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/**
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* For the given pixel format, returns the number of bytes that the green
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* component is offset from the start of the pixel. For instance, if a pixel
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* of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>,
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* then the green component will be
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* <code>pixel[TJ.getGreenOffset(TJ.PF_BGRX)]</code>.
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*
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* @param pixelFormat the pixel format (one of <code>PF_*</code>)
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*
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* @return the green offset for the given pixel format, or -1 if the pixel
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* format does not have a green component.
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*/
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public static int getGreenOffset(int pixelFormat) {
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checkPixelFormat(pixelFormat);
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return greenOffset[pixelFormat];
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}
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private static final int[] greenOffset = {
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1, 1, 1, 1, 2, 2, -1, 1, 1, 2, 2, -1
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};
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/**
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* For the given pixel format, returns the number of bytes that the blue
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* component is offset from the start of the pixel. For instance, if a pixel
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* of format <code>TJ.PF_BGRX</code> is stored in <code>char pixel[]</code>,
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* then the blue component will be
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* <code>pixel[TJ.getBlueOffset(TJ.PF_BGRX)]</code>.
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*
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* @param pixelFormat the pixel format (one of <code>PF_*</code>)
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*
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* @return the blue offset for the given pixel format, or -1 if the pixel
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* format does not have a blue component.
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*/
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public static int getBlueOffset(int pixelFormat) {
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checkPixelFormat(pixelFormat);
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return blueOffset[pixelFormat];
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}
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private static final int[] blueOffset = {
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2, 0, 2, 0, 1, 3, -1, 2, 0, 1, 3, -1
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};
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/**
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* For the given pixel format, returns the number of bytes that the alpha
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* component is offset from the start of the pixel. For instance, if a pixel
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* of format <code>TJ.PF_BGRA</code> is stored in <code>char pixel[]</code>,
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* then the alpha component will be
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* <code>pixel[TJ.getAlphaOffset(TJ.PF_BGRA)]</code>.
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*
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* @param pixelFormat the pixel format (one of <code>PF_*</code>)
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*
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* @return the alpha offset for the given pixel format, or -1 if the pixel
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* format does not have a alpha component.
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*/
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public static int getAlphaOffset(int pixelFormat) {
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checkPixelFormat(pixelFormat);
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return alphaOffset[pixelFormat];
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}
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private static final int[] alphaOffset = {
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-1, -1, -1, -1, -1, -1, -1, 3, 3, 0, 0, -1
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};
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/**
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* The number of JPEG colorspaces
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*/
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public static final int NUMCS = 5;
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/**
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* RGB colorspace. When compressing the JPEG image, the R, G, and B
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* components in the source image are reordered into image planes, but no
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* colorspace conversion or subsampling is performed. RGB JPEG images can be
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* decompressed to any of the extended RGB pixel formats or grayscale, but
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* they cannot be decompressed to YUV images.
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*/
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public static final int CS_RGB = 0;
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/**
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* YCbCr colorspace. YCbCr is not an absolute colorspace but rather a
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* mathematical transformation of RGB designed solely for storage and
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* transmission. YCbCr images must be converted to RGB before they can
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* actually be displayed. In the YCbCr colorspace, the Y (luminance)
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* component represents the black & white portion of the original image, and
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* the Cb and Cr (chrominance) components represent the color portion of the
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* original image. Originally, the analog equivalent of this transformation
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* allowed the same signal to drive both black & white and color televisions,
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* but JPEG images use YCbCr primarily because it allows the color data to be
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* optionally subsampled for the purposes of reducing bandwidth or disk
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* space. YCbCr is the most common JPEG colorspace, and YCbCr JPEG images
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* can be compressed from and decompressed to any of the extended RGB pixel
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* formats or grayscale, or they can be decompressed to YUV planar images.
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*/
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public static final int CS_YCbCr = 1;
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/**
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* Grayscale colorspace. The JPEG image retains only the luminance data (Y
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* component), and any color data from the source image is discarded.
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* Grayscale JPEG images can be compressed from and decompressed to any of
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* the extended RGB pixel formats or grayscale, or they can be decompressed
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* to YUV planar images.
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*/
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public static final int CS_GRAY = 2;
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/**
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* CMYK colorspace. When compressing the JPEG image, the C, M, Y, and K
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* components in the source image are reordered into image planes, but no
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* colorspace conversion or subsampling is performed. CMYK JPEG images can
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* only be decompressed to CMYK pixels.
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*/
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public static final int CS_CMYK = 3;
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/**
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* YCCK colorspace. YCCK (AKA "YCbCrK") is not an absolute colorspace but
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* rather a mathematical transformation of CMYK designed solely for storage
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* and transmission. It is to CMYK as YCbCr is to RGB. CMYK pixels can be
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* reversibly transformed into YCCK, and as with YCbCr, the chrominance
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* components in the YCCK pixels can be subsampled without incurring major
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* perceptual loss. YCCK JPEG images can only be compressed from and
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* decompressed to CMYK pixels.
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*/
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public static final int CS_YCCK = 4;
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/**
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* The uncompressed source/destination image is stored in bottom-up (Windows,
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* OpenGL) order, not top-down (X11) order.
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*/
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public static final int FLAG_BOTTOMUP = 2;
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@Deprecated
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public static final int FLAG_FORCEMMX = 8;
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@Deprecated
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public static final int FLAG_FORCESSE = 16;
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@Deprecated
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public static final int FLAG_FORCESSE2 = 32;
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@Deprecated
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public static final int FLAG_FORCESSE3 = 128;
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/**
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* When decompressing an image that was compressed using chrominance
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* subsampling, use the fastest chrominance upsampling algorithm available in
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* the underlying codec. The default is to use smooth upsampling, which
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* creates a smooth transition between neighboring chrominance components in
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* order to reduce upsampling artifacts in the decompressed image.
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*/
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public static final int FLAG_FASTUPSAMPLE = 256;
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/**
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* Use the fastest DCT/IDCT algorithm available in the underlying codec. The
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* default if this flag is not specified is implementation-specific. For
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* example, the implementation of TurboJPEG for libjpeg[-turbo] uses the fast
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* algorithm by default when compressing, because this has been shown to have
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* only a very slight effect on accuracy, but it uses the accurate algorithm
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* when decompressing, because this has been shown to have a larger effect.
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*/
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public static final int FLAG_FASTDCT = 2048;
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/**
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* Use the most accurate DCT/IDCT algorithm available in the underlying
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* codec. The default if this flag is not specified is
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* implementation-specific. For example, the implementation of TurboJPEG for
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* libjpeg[-turbo] uses the fast algorithm by default when compressing,
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* because this has been shown to have only a very slight effect on accuracy,
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* but it uses the accurate algorithm when decompressing, because this has
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* been shown to have a larger effect.
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*/
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public static final int FLAG_ACCURATEDCT = 4096;
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/**
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* Immediately discontinue the current compression/decompression/transform
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* operation if the underlying codec throws a warning (non-fatal error). The
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* default behavior is to allow the operation to complete unless a fatal
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* error is encountered.
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* <p>
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* NOTE: due to the design of the TurboJPEG Java API, only certain methods
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* (specifically, {@link TJDecompressor TJDecompressor.decompress*()} methods
|
|
* with a void return type) will complete and leave the output image in a
|
|
* fully recoverable state after a non-fatal error occurs.
|
|
*/
|
|
public static final int FLAG_STOPONWARNING = 8192;
|
|
/**
|
|
* Use progressive entropy coding in JPEG images generated by compression and
|
|
* transform operations. Progressive entropy coding will generally improve
|
|
* compression relative to baseline entropy coding (the default), but it will
|
|
* reduce compression and decompression performance considerably.
|
|
*/
|
|
public static final int FLAG_PROGRESSIVE = 16384;
|
|
|
|
|
|
/**
|
|
* The number of error codes
|
|
*/
|
|
public static final int NUMERR = 2;
|
|
/**
|
|
* The error was non-fatal and recoverable, but the image may still be
|
|
* corrupt.
|
|
* <p>
|
|
* NOTE: due to the design of the TurboJPEG Java API, only certain methods
|
|
* (specifically, {@link TJDecompressor TJDecompressor.decompress*()} methods
|
|
* with a void return type) will complete and leave the output image in a
|
|
* fully recoverable state after a non-fatal error occurs.
|
|
*/
|
|
public static final int ERR_WARNING = 0;
|
|
/**
|
|
* The error was fatal and non-recoverable.
|
|
*/
|
|
public static final int ERR_FATAL = 1;
|
|
|
|
|
|
/**
|
|
* Returns the maximum size of the buffer (in bytes) required to hold a JPEG
|
|
* image with the given width, height, and level of chrominance subsampling.
|
|
*
|
|
* @param width the width (in pixels) of the JPEG image
|
|
*
|
|
* @param height the height (in pixels) of the JPEG image
|
|
*
|
|
* @param jpegSubsamp the level of chrominance subsampling to be used when
|
|
* generating the JPEG image (one of {@link TJ TJ.SAMP_*})
|
|
*
|
|
* @return the maximum size of the buffer (in bytes) required to hold a JPEG
|
|
* image with the given width, height, and level of chrominance subsampling.
|
|
*/
|
|
public static native int bufSize(int width, int height, int jpegSubsamp);
|
|
|
|
/**
|
|
* Returns the size of the buffer (in bytes) required to hold a YUV planar
|
|
* image with the given width, height, and level of chrominance subsampling.
|
|
*
|
|
* @param width the width (in pixels) of the YUV image
|
|
*
|
|
* @param pad the width of each line in each plane of the image is padded to
|
|
* the nearest multiple of this number of bytes (must be a power of 2.)
|
|
*
|
|
* @param height the height (in pixels) of the YUV image
|
|
*
|
|
* @param subsamp the level of chrominance subsampling used in the YUV
|
|
* image (one of {@link TJ TJ.SAMP_*})
|
|
*
|
|
* @return the size of the buffer (in bytes) required to hold a YUV planar
|
|
* image with the given width, height, and level of chrominance subsampling.
|
|
*/
|
|
public static native int bufSizeYUV(int width, int pad, int height,
|
|
int subsamp);
|
|
|
|
/**
|
|
* @deprecated Use {@link #bufSizeYUV(int, int, int, int)} instead.
|
|
*/
|
|
@Deprecated
|
|
public static native int bufSizeYUV(int width, int height, int subsamp);
|
|
|
|
/**
|
|
* Returns the size of the buffer (in bytes) required to hold a YUV image
|
|
* plane with the given parameters.
|
|
*
|
|
* @param componentID ID number of the image plane (0 = Y, 1 = U/Cb,
|
|
* 2 = V/Cr)
|
|
*
|
|
* @param width width (in pixels) of the YUV image. NOTE: this is the width
|
|
* of the whole image, not the plane width.
|
|
*
|
|
* @param stride bytes per line in the image plane.
|
|
*
|
|
* @param height height (in pixels) of the YUV image. NOTE: this is the
|
|
* height of the whole image, not the plane height.
|
|
*
|
|
* @param subsamp the level of chrominance subsampling used in the YUV
|
|
* image (one of {@link TJ TJ.SAMP_*})
|
|
*
|
|
* @return the size of the buffer (in bytes) required to hold a YUV planar
|
|
* image with the given parameters.
|
|
*/
|
|
public static native int planeSizeYUV(int componentID, int width, int stride,
|
|
int height, int subsamp);
|
|
|
|
/**
|
|
* Returns the plane width of a YUV image plane with the given parameters.
|
|
* Refer to {@link YUVImage YUVImage} for a description of plane width.
|
|
*
|
|
* @param componentID ID number of the image plane (0 = Y, 1 = U/Cb,
|
|
* 2 = V/Cr)
|
|
*
|
|
* @param width width (in pixels) of the YUV image
|
|
*
|
|
* @param subsamp the level of chrominance subsampling used in the YUV image
|
|
* (one of {@link TJ TJ.SAMP_*})
|
|
*
|
|
* @return the plane width of a YUV image plane with the given parameters.
|
|
*/
|
|
public static native int planeWidth(int componentID, int width, int subsamp);
|
|
|
|
/**
|
|
* Returns the plane height of a YUV image plane with the given parameters.
|
|
* Refer to {@link YUVImage YUVImage} for a description of plane height.
|
|
*
|
|
* @param componentID ID number of the image plane (0 = Y, 1 = U/Cb,
|
|
* 2 = V/Cr)
|
|
*
|
|
* @param height height (in pixels) of the YUV image
|
|
*
|
|
* @param subsamp the level of chrominance subsampling used in the YUV image
|
|
* (one of {@link TJ TJ.SAMP_*})
|
|
*
|
|
* @return the plane height of a YUV image plane with the given parameters.
|
|
*/
|
|
public static native int planeHeight(int componentID, int height,
|
|
int subsamp);
|
|
|
|
/**
|
|
* Returns a list of fractional scaling factors that the JPEG decompressor in
|
|
* this implementation of TurboJPEG supports.
|
|
*
|
|
* @return a list of fractional scaling factors that the JPEG decompressor in
|
|
* this implementation of TurboJPEG supports.
|
|
*/
|
|
public static native TJScalingFactor[] getScalingFactors();
|
|
|
|
static {
|
|
TJLoader.load();
|
|
}
|
|
|
|
private static void checkPixelFormat(int pixelFormat) {
|
|
if (pixelFormat < 0 || pixelFormat >= NUMPF)
|
|
throw new IllegalArgumentException("Invalid pixel format");
|
|
}
|
|
|
|
private static void checkSubsampling(int subsamp) {
|
|
if (subsamp < 0 || subsamp >= NUMSAMP)
|
|
throw new IllegalArgumentException("Invalid subsampling type");
|
|
}
|
|
|
|
}
|