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author | marha <marha@users.sourceforge.net> | 2010-03-07 16:00:29 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2010-03-07 16:00:29 +0000 |
commit | b40894093babb10f3cd155f11ff2d6c710372395 (patch) | |
tree | e6e94e5aa39ca9d5a653af567145e4b5dda25d61 /mesalib/progs/util/imagesgi.cpp | |
parent | d27419efcdaaccb40e0f10c549a6b732a2f29e81 (diff) | |
parent | 14b1cb8d5a27ec9716d3f790fce95f0469e35605 (diff) | |
download | vcxsrv-b40894093babb10f3cd155f11ff2d6c710372395.tar.gz vcxsrv-b40894093babb10f3cd155f11ff2d6c710372395.tar.bz2 vcxsrv-b40894093babb10f3cd155f11ff2d6c710372395.zip |
svn merge ^/branches/released .
Diffstat (limited to 'mesalib/progs/util/imagesgi.cpp')
-rw-r--r-- | mesalib/progs/util/imagesgi.cpp | 369 |
1 files changed, 0 insertions, 369 deletions
diff --git a/mesalib/progs/util/imagesgi.cpp b/mesalib/progs/util/imagesgi.cpp deleted file mode 100644 index f5128aabe..000000000 --- a/mesalib/progs/util/imagesgi.cpp +++ /dev/null @@ -1,369 +0,0 @@ -/****************************************************************************** -** Filename : imageSgi.cpp -** UNCLASSIFIED -** -** Description : Utility to read SGI image format files. This code was -** originally a SGI image loading utility provided with the -** Mesa 3D library @ http://www.mesa3d.org by Brain Paul. -** This has been extended to read all SGI image formats -** (e.g. INT, INTA, RGB, RGBA). -** -** Revision History: -** Date Name Description -** 06/07/99 BRC Initial Release -** -** Note: -** -** The SGI Image Data (if not RLE) -** -** If the image is stored verbatim (without RLE), then image data directly -** follows the 512 byte header. The data for each scanline of the first -** channel is written first. If the image has more than 1 channel, all -** the data for the first channel is written, followed by the remaining -** channels. If the BPC value is 1, then each scanline is written as XSIZE -** bytes. If the BPC value is 2, then each scanline is written as XSIZE -** shorts. These shorts are stored in the byte order described above. -** -******************************************************************************/ -#define __IMAGESGI_CPP - -#include "imagesgi.h" - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <math.h> -#include <assert.h> - -struct sImageSgiRaw -{ - struct sImageSgiHeader header; - unsigned char *chan0; - unsigned char *chan1; - unsigned char *chan2; - unsigned char *chan3; - unsigned int *rowStart; - int *rowSize; -}; - -// Static routines -static struct sImageSgiRaw *ImageSgiRawOpen(char const * const fileName); -static void ImageSgiRawClose(struct sImageSgiRaw *raw); -static void ImageSgiRawGetRow(struct sImageSgiRaw *raw, unsigned char *buf, - int y, int z); -static void ImageSgiRawGetData(struct sImageSgiRaw *raw, struct sImageSgi -*final); -static void *SwitchEndian16(void *value); -static void *SwitchEndian32(void *value); - -// Static variables -FILE *mFp = NULL; -unsigned char *mChanTmp = NULL; - - -/*****************************************************************************/ -struct sImageSgi *ImageSgiOpen(char const * const fileName) -{ - struct sImageSgiRaw *raw = NULL; - struct sImageSgi *final = NULL; - - raw = ImageSgiRawOpen(fileName); - final = new struct sImageSgi; - - assert(final); - if(final) - { - final->header = raw->header; - final->data = NULL; - ImageSgiRawGetData(raw, final); - ImageSgiRawClose(raw); - } - - return final; -} // ImageSgiRawOpen - - -/*****************************************************************************/ -void ImageSgiClose(struct sImageSgi *image) -{ - - if(image) - { - if(image->data) - delete[] image->data; - image->data = NULL; - delete image; - } - image = NULL; - - return; -} // ImageSgiClose - - -/*****************************************************************************/ -static struct sImageSgiRaw *ImageSgiRawOpen(char const * const fileName) -{ - struct sImageSgiRaw *raw = NULL; - int x; - int i; - bool swapFlag = false; - union - { - int testWord; - char testByte[4]; - } endianTest; - endianTest.testWord = 1; - - // Determine endianess of platform. - if(endianTest.testByte[0] == 1) - swapFlag = true; - else - swapFlag = false; - - raw = new struct sImageSgiRaw; - - assert(raw); - if(raw) - { - raw->chan0 = NULL; - raw->chan1 = NULL; - raw->chan2 = NULL; - raw->chan3 = NULL; - raw->rowStart = NULL; - raw->rowSize = NULL; - mFp = fopen(fileName, "rb"); - assert(mFp); - - fread(&raw->header, sizeof(struct sImageSgiHeader), 1, mFp); - if(swapFlag == true) - { - SwitchEndian16(&raw->header.magic); - SwitchEndian16(&raw->header.type); - SwitchEndian16(&raw->header.dim); - SwitchEndian16(&raw->header.xsize); - SwitchEndian16(&raw->header.ysize); - SwitchEndian16(&raw->header.zsize); - } - - mChanTmp = new unsigned char[raw->header.xsize * raw->header.ysize]; - assert(mChanTmp); - switch(raw->header.zsize) - { - case 4: - raw->chan3 = new unsigned char[raw->header.xsize * -raw->header.ysize]; - assert(raw->chan3); - case 3: - raw->chan2 = new unsigned char[raw->header.xsize * -raw->header.ysize]; - assert(raw->chan2); - case 2: - raw->chan1 = new unsigned char[raw->header.xsize * -raw->header.ysize]; - assert(raw->chan1); - case 1: - raw->chan0 = new unsigned char[raw->header.xsize * -raw->header.ysize]; - assert(raw->chan0); - } - - if(raw->header.type == IMAGE_SGI_TYPE_RLE) - { - x = raw->header.ysize * raw->header.zsize * sizeof(unsigned int); - raw->rowStart = new unsigned int[x]; - raw->rowSize = new int[x]; - - fseek(mFp, sizeof(struct sImageSgiHeader), SEEK_SET); - fread(raw->rowStart, 1, x, mFp); - fread(raw->rowSize, 1, x, mFp); - - if(swapFlag == true) - { - for(i=0; i<x/sizeof(unsigned int); i++) - SwitchEndian32(&raw->rowStart[i]); - for(i=0; i<x/sizeof(int); i++) - SwitchEndian32(&raw->rowSize[i]); - } - - } - - } - - return raw; -} // ImageSgiRawOpen - - -/*****************************************************************************/ -static void ImageSgiRawClose(struct sImageSgiRaw *raw) -{ - - fclose(mFp); - mFp = NULL; - - if(mChanTmp) - delete[] mChanTmp; - mChanTmp = NULL; - - if(raw->chan0) - delete[] raw->chan0; - raw->chan0 = NULL; - - if(raw->chan1) - delete[] raw->chan1; - raw->chan1 = NULL; - - if(raw->chan2) - delete[] raw->chan2; - raw->chan2 = NULL; - - if(raw->chan3) - delete[] raw->chan3; - raw->chan3 = NULL; - - if(raw) - delete raw; - raw = NULL; - - return; -} // ImageSgiRawClose - - -/*****************************************************************************/ -static void ImageSgiRawGetRow(struct sImageSgiRaw *raw, unsigned char *buf, - int y, int z) -{ - unsigned char *iPtr = NULL; - unsigned char *oPtr = NULL; - unsigned char pixel; - int count; - - if((raw->header.type & 0xFF00) == 0x0100) - { - fseek(mFp, raw->rowStart[y+z*raw->header.ysize], SEEK_SET); - fread(mChanTmp, 1, (unsigned int)raw->rowSize[y+z*raw->header.ysize], -mFp); - iPtr = mChanTmp; - oPtr = buf; - while(1) - { - pixel = *iPtr++; - count = (int)(pixel & 0x7F); - if(!count) - { - return; - } - if (pixel & 0x80) - { - while (count--) - { - *oPtr++ = *iPtr++; - } - } - else - { - pixel = *iPtr++; - while (count--) - { - *oPtr++ = pixel; - } - } - } - } - else - { - fseek(mFp, - sizeof(struct sImageSgiHeader)+(y*raw->header.xsize) + - (z*raw->header.xsize*raw->header.ysize), - SEEK_SET); - fread(buf, 1, raw->header.xsize, mFp); - } - - return; -} // ImageSgiRawGetRow - - -/*****************************************************************************/ -static void ImageSgiRawGetData(struct sImageSgiRaw *raw, struct sImageSgi -*final) -{ - unsigned char *ptr = NULL; - int i, j; - - final->data = - new unsigned -char[raw->header.xsize*raw->header.ysize*raw->header.zsize]; - assert(final->data); - - ptr = final->data; - for(i=0; i<raw->header.ysize; i++) - { - switch(raw->header.zsize) - { - case 1: - ImageSgiRawGetRow(raw, raw->chan0, i, 0); - for(j=0; j<raw->header.xsize; j++) - *(ptr++) = raw->chan0[j]; - break; - case 2: - ImageSgiRawGetRow(raw, raw->chan0, i, 0); - ImageSgiRawGetRow(raw, raw->chan1, i, 1); - for(j=0; j<raw->header.xsize; j++) - { - *(ptr++) = raw->chan0[j]; - *(ptr++) = raw->chan1[j]; - } - break; - case 3: - ImageSgiRawGetRow(raw, raw->chan0, i, 0); - ImageSgiRawGetRow(raw, raw->chan1, i, 1); - ImageSgiRawGetRow(raw, raw->chan2, i, 2); - for(j=0; j<raw->header.xsize; j++) - { - *(ptr++) = raw->chan0[j]; - *(ptr++) = raw->chan1[j]; - *(ptr++) = raw->chan2[j]; - } - break; - case 4: - ImageSgiRawGetRow(raw, raw->chan0, i, 0); - ImageSgiRawGetRow(raw, raw->chan1, i, 1); - ImageSgiRawGetRow(raw, raw->chan2, i, 2); - ImageSgiRawGetRow(raw, raw->chan3, i, 3); - for(j=0; j<raw->header.xsize; j++) - { - *(ptr++) = raw->chan0[j]; - *(ptr++) = raw->chan1[j]; - *(ptr++) = raw->chan2[j]; - *(ptr++) = raw->chan3[j]; - } - break; - } - } - - return; -} // ImageSgiRawGetData - - -/*****************************************************************************/ -static void *SwitchEndian16(void *value) -{ - short value16 = *(short *) value; - value16 = ((value16 & 0xff00) >> 8L) + - ((value16 & 0x00ff) << 8L); - *(short *)value = value16; - return value; -} // SwitchEndian16 - - -/*****************************************************************************/ -static void *SwitchEndian32(void *value) -{ - int value32 = *(int *) value; - value32 = ((value32 & 0xff000000) >> 24L) + - ((value32 & 0x00ff0000) >> 8) + - ((value32 & 0x0000ff00) << 8) + - ((value32 & 0x000000ff) << 24L); - *(int *)value = value32; - return value; -} // SwitchEndian32 - |