mirror of
https://github.com/yuzu-emu/FasTC.git
synced 2024-11-28 08:14:15 +01:00
a80944901e
In order to better facilitate the change from block stream order to non-block stream order, a lot of changes were introduced to the way that we feed texture data to the compressors. This data is embodied in the CompressionJob struct. We have made it so that the compression job points to both the in and out pointers for our compressed and uncompressed data. Furthermore, we have made sure that the struct also contains the format that its compressing for, so that if any threading programs would like to chop up a compression job into smaller chunks based on the format, it doesn't need to know the format explicitly, it just needs to know certain properties about the format. Moreover, the user can now define the start and end pixels from which we would like to compress to. We can compress subsets of data by changing the in and out pointers and the width and height values. The compressors will read data linearly until they reach the out pixels based on the width of the given pixel.
101 lines
4.2 KiB
C++
101 lines
4.2 KiB
C++
/* FasTC
|
|
* Copyright (c) 2012 University of North Carolina at Chapel Hill. All rights reserved.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software and its documentation for educational,
|
|
* research, and non-profit purposes, without fee, and without a written agreement is hereby granted,
|
|
* provided that the above copyright notice, this paragraph, and the following four paragraphs appear
|
|
* in all copies.
|
|
*
|
|
* Permission to incorporate this software into commercial products may be obtained by contacting the
|
|
* authors or the Office of Technology Development at the University of North Carolina at Chapel Hill <otd@unc.edu>.
|
|
*
|
|
* This software program and documentation are copyrighted by the University of North Carolina at Chapel Hill.
|
|
* The software program and documentation are supplied "as is," without any accompanying services from the
|
|
* University of North Carolina at Chapel Hill or the authors. The University of North Carolina at Chapel Hill
|
|
* and the authors do not warrant that the operation of the program will be uninterrupted or error-free. The
|
|
* end-user understands that the program was developed for research purposes and is advised not to rely
|
|
* exclusively on the program for any reason.
|
|
*
|
|
* IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE AUTHORS BE LIABLE TO ANY PARTY FOR
|
|
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE
|
|
* USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
|
|
* AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
|
|
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY
|
|
* STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY
|
|
* OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
|
|
* ENHANCEMENTS, OR MODIFICATIONS.
|
|
*
|
|
* Please send all BUG REPORTS to <pavel@cs.unc.edu>.
|
|
*
|
|
* The authors may be contacted via:
|
|
*
|
|
* Pavel Krajcevski
|
|
* Dept of Computer Science
|
|
* 201 S Columbia St
|
|
* Frederick P. Brooks, Jr. Computer Science Bldg
|
|
* Chapel Hill, NC 27599-3175
|
|
* USA
|
|
*
|
|
* <http://gamma.cs.unc.edu/FasTC/>
|
|
*/
|
|
|
|
#ifndef _COMPRESSED_IMAGE_H_
|
|
#define _COMPRESSED_IMAGE_H_
|
|
|
|
#include "TexCompTypes.h"
|
|
#include "CompressionFormat.h"
|
|
#include "Image.h"
|
|
|
|
class CompressedImage : public FasTC::Image<FasTC::Pixel> {
|
|
private:
|
|
FasTC::ECompressionFormat m_Format;
|
|
uint8 *m_CompressedData;
|
|
|
|
public:
|
|
CompressedImage(const CompressedImage &);
|
|
CompressedImage &operator=(const CompressedImage &);
|
|
|
|
// Create a compressed image from the given data according to
|
|
// the passed format. The size of the data is expected to conform
|
|
// to the width, height, and format specified.
|
|
CompressedImage(
|
|
const uint32 width,
|
|
const uint32 height,
|
|
const FasTC::ECompressionFormat format,
|
|
const uint8 *data
|
|
);
|
|
|
|
virtual ~CompressedImage();
|
|
|
|
virtual FasTC::Image<FasTC::Pixel> *Clone() const {
|
|
return new CompressedImage(*this);
|
|
}
|
|
|
|
virtual void ComputePixels();
|
|
|
|
static uint32 GetCompressedSize(uint32 uncompressedSize, FasTC::ECompressionFormat format);
|
|
static uint32 GetUncompressedSize(uint32 compressedSize, FasTC::ECompressionFormat format) {
|
|
uint32 cmp = GetCompressedSize(compressedSize, format);
|
|
return compressedSize * (compressedSize / cmp);
|
|
}
|
|
|
|
uint32 GetCompressedSize() const {
|
|
return GetCompressedSize(GetUncompressedSize(), m_Format);
|
|
}
|
|
uint32 GetUncompressedSize() const {
|
|
return GetWidth() * GetHeight() * sizeof(uint32);
|
|
}
|
|
|
|
// Decompress the compressed image data into outBuf. outBufSz is expected
|
|
// to be the proper size determined by the width, height, and format.
|
|
// !FIXME! We should have a function to explicitly return the in/out buf
|
|
// size for a given compressed image.
|
|
bool DecompressImage(uint8 *outBuf, uint32 outBufSz) const;
|
|
|
|
FasTC::ECompressionFormat GetFormat() const { return m_Format; }
|
|
};
|
|
|
|
#endif // _COMPRESSED_IMAGE_H_
|