Difference between revisions of "Applications/Libjpeg-turbo"
From HPC
(Created page with "__TOC__ ==Application Details== *Description: libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, AVX2, NEON, AltiVec) to accelerate baseline JPEG comp...") |
|||
| Line 46: | Line 46: | ||
Compilation is carried out below, in this example the '''gcc''' compiler is used. However, the applies similarly to the Intel compiler too. | Compilation is carried out below, in this example the '''gcc''' compiler is used. However, the applies similarly to the Intel compiler too. | ||
| + | |||
<pre style="background-color: #000000; color: white; border: 2px solid black; font-family: monospace, sans-serif;"> | <pre style="background-color: #000000; color: white; border: 2px solid black; font-family: monospace, sans-serif;"> | ||
| Line 52: | Line 53: | ||
</pre> | </pre> | ||
| − | |||
| − | |||
Revision as of 10:40, 17 March 2017
Application Details
- Description: libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, AVX2, NEON, AltiVec) to accelerate baseline JPEG compression .
- Version: 1.5.1 (compiled with gcc)
- Module: gcc/1.5.1
- Licence: GNU
Usage Examples
Module
[username@login01 ~]$ module add libjpeg-turbo/gcc/1.5.1
Compilation
Libjpeg-turbo is a library for use either with a compiled binary that requires it, or it could be required at compilation time also.
A typical code snippet (C++) requiring is shown below:
#include <turbojpeg.h>
const int JPEG_QUALITY = 85;
const int COLOR_COMPONENTS = 3;
int _width = 640;
int _height = 720;
long unsigned int _jpegSize = 0;
unsigned char* _compressedImage = NULL;
unsigned char buffer[_width*_height*COLOR_COMPONENTS];
tjhandle _jpegCompressor = tjInitCompress();
tjCompress2(_jpegCompressor, buffer, _width, 0, _height, TJPF_RGB,
&_compressedImage, &_jpegSize, TJSAMP_444, JPEG_QUALITY,
TJFLAG_FASTDCT);
tjDestroy(_jpegCompressor);
//to free the memory allocated by TurboJPEG
tjFree(&_compressedImage);
Compilation is carried out below, in this example the gcc compiler is used. However, the applies similarly to the Intel compiler too.
gcc -o tjIMAGE tjIMAGE.cpp -lm -ljpeg