diff options
author | Eric Anholt <eric@anholt.net> | 2010-05-21 09:32:38 -0700 |
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committer | Eric Anholt <eric@anholt.net> | 2010-05-21 12:20:39 -0700 |
commit | 68fc4b415e322f6744299e39864fbc377c6eff74 (patch) | |
tree | 4bafffd8b0105174f3c5c0ae327a005be9145990 /progs/util/readtex.c | |
parent | e4f4489e3fc0b36d72821b55794fb843b2b7fa5f (diff) |
Remove demos that have moved to git+ssh://git.freedesktop.org/git/mesa/demos.
The remaining programs are ones I've had difficulty finding a build
environment for to make the build system or are unit tests that should
probably live next to their code instead. Hopefully people can bring
over the build for remaining pieces they care about.
Diffstat (limited to 'progs/util/readtex.c')
-rw-r--r-- | progs/util/readtex.c | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/progs/util/readtex.c b/progs/util/readtex.c deleted file mode 100644 index f6f511481c..0000000000 --- a/progs/util/readtex.c +++ /dev/null @@ -1,495 +0,0 @@ -/* readtex.c */ - -/* - * Read an SGI .rgb image file and generate a mipmap texture set. - * Much of this code was borrowed from SGI's tk OpenGL toolkit. - */ - - - -#include <GL/gl.h> -#include <GL/glu.h> -#include <assert.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include "readtex.h" - - -#ifndef SEEK_SET -# define SEEK_SET 0 -#endif - - -/* -** RGB Image Structure -*/ - -typedef struct _TK_RGBImageRec { - GLint sizeX, sizeY; - GLint components; - unsigned char *data; -} TK_RGBImageRec; - - - -/******************************************************************************/ - -typedef struct _rawImageRec { - unsigned short imagic; - unsigned short type; - unsigned short dim; - unsigned short sizeX, sizeY, sizeZ; - unsigned long min, max; - unsigned long wasteBytes; - char name[80]; - unsigned long colorMap; - FILE *file; - unsigned char *tmp, *tmpR, *tmpG, *tmpB, *tmpA; - unsigned long rleEnd; - GLuint *rowStart; - GLint *rowSize; -} rawImageRec; - -/******************************************************************************/ - -static void ConvertShort(unsigned short *array, long length) -{ - unsigned long b1, b2; - unsigned char *ptr; - - ptr = (unsigned char *)array; - while (length--) { - b1 = *ptr++; - b2 = *ptr++; - *array++ = (unsigned short) ((b1 << 8) | (b2)); - } -} - -static void ConvertLong(GLuint *array, long length) -{ - unsigned long b1, b2, b3, b4; - unsigned char *ptr; - - ptr = (unsigned char *)array; - while (length--) { - b1 = *ptr++; - b2 = *ptr++; - b3 = *ptr++; - b4 = *ptr++; - *array++ = (b1 << 24) | (b2 << 16) | (b3 << 8) | (b4); - } -} - -static rawImageRec *RawImageOpen(const char *fileName) -{ - union { - int testWord; - char testByte[4]; - } endianTest; - rawImageRec *raw; - GLenum swapFlag; - int x; - size_t result; - - endianTest.testWord = 1; - if (endianTest.testByte[0] == 1) { - swapFlag = GL_TRUE; - } else { - swapFlag = GL_FALSE; - } - - raw = (rawImageRec *)calloc(1, sizeof(rawImageRec)); - if (raw == NULL) { - fprintf(stderr, "Out of memory!\n"); - return NULL; - } - raw->file = fopen(fileName, "rb"); - if (raw->file == NULL) { - const char *baseName = strrchr(fileName, '/'); - if(baseName) - raw->file = fopen(baseName + 1, "rb"); - if(raw->file == NULL) { - perror(fileName); - free(raw); - return NULL; - } - } - - result = fread(raw, 1, 12, raw->file); - assert(result == 12); - - if (swapFlag) { - ConvertShort(&raw->imagic, 1); - ConvertShort(&raw->type, 1); - ConvertShort(&raw->dim, 1); - ConvertShort(&raw->sizeX, 1); - ConvertShort(&raw->sizeY, 1); - ConvertShort(&raw->sizeZ, 1); - } - - raw->tmp = (unsigned char *)malloc(raw->sizeX*256); - raw->tmpR = (unsigned char *)malloc(raw->sizeX*256); - raw->tmpG = (unsigned char *)malloc(raw->sizeX*256); - raw->tmpB = (unsigned char *)malloc(raw->sizeX*256); - if (raw->sizeZ==4) { - raw->tmpA = (unsigned char *)malloc(raw->sizeX*256); - } - if (raw->tmp == NULL || raw->tmpR == NULL || raw->tmpG == NULL || - raw->tmpB == NULL) { - fprintf(stderr, "Out of memory!\n"); - free(raw->tmp); - free(raw->tmpR); - free(raw->tmpG); - free(raw->tmpB); - free(raw->tmpA); - free(raw); - return NULL; - } - - if ((raw->type & 0xFF00) == 0x0100) { - x = raw->sizeY * raw->sizeZ * sizeof(GLuint); - raw->rowStart = (GLuint *)malloc(x); - raw->rowSize = (GLint *)malloc(x); - if (raw->rowStart == NULL || raw->rowSize == NULL) { - fprintf(stderr, "Out of memory!\n"); - free(raw->tmp); - free(raw->tmpR); - free(raw->tmpG); - free(raw->tmpB); - free(raw->tmpA); - free(raw->rowStart); - free(raw->rowSize); - free(raw); - return NULL; - } - raw->rleEnd = 512 + (2 * x); - fseek(raw->file, 512, SEEK_SET); - result = fread(raw->rowStart, 1, x, raw->file); - assert(result == x); - result = fread(raw->rowSize, 1, x, raw->file); - assert(result == x); - if (swapFlag) { - ConvertLong(raw->rowStart, (long) (x/sizeof(GLuint))); - ConvertLong((GLuint *)raw->rowSize, (long) (x/sizeof(GLint))); - } - } - return raw; -} - -static void RawImageClose(rawImageRec *raw) -{ - fclose(raw->file); - free(raw->tmp); - free(raw->tmpR); - free(raw->tmpG); - free(raw->tmpB); - if (raw->rowStart) - free(raw->rowStart); - if (raw->rowSize) - free(raw->rowSize); - if (raw->sizeZ>3) { - free(raw->tmpA); - } - free(raw); -} - -static void RawImageGetRow(rawImageRec *raw, unsigned char *buf, int y, int z) -{ - unsigned char *iPtr, *oPtr, pixel; - int count, done = 0; - size_t result; - - if ((raw->type & 0xFF00) == 0x0100) { - fseek(raw->file, (long) raw->rowStart[y+z*raw->sizeY], SEEK_SET); - result = fread(raw->tmp, 1, (unsigned int)raw->rowSize[y+z*raw->sizeY], - raw->file); - assert(result == (unsigned int)raw->rowSize[y+z*raw->sizeY]); - - iPtr = raw->tmp; - oPtr = buf; - while (!done) { - pixel = *iPtr++; - count = (int)(pixel & 0x7F); - if (!count) { - done = 1; - return; - } - if (pixel & 0x80) { - while (count--) { - *oPtr++ = *iPtr++; - } - } else { - pixel = *iPtr++; - while (count--) { - *oPtr++ = pixel; - } - } - } - } else { - fseek(raw->file, 512+(y*raw->sizeX)+(z*raw->sizeX*raw->sizeY), - SEEK_SET); - result = fread(buf, 1, raw->sizeX, raw->file); - assert(result == raw->sizeX); - } -} - - -static void RawImageGetData(rawImageRec *raw, TK_RGBImageRec *final) -{ - unsigned char *ptr; - int i, j; - - final->data = (unsigned char *)malloc((raw->sizeX+1)*(raw->sizeY+1)*4); - if (final->data == NULL) { - fprintf(stderr, "Out of memory!\n"); - return; - } - - ptr = final->data; - for (i = 0; i < (int)(raw->sizeY); i++) { - RawImageGetRow(raw, raw->tmpR, i, 0); - RawImageGetRow(raw, raw->tmpG, i, 1); - RawImageGetRow(raw, raw->tmpB, i, 2); - if (raw->sizeZ>3) { - RawImageGetRow(raw, raw->tmpA, i, 3); - } - for (j = 0; j < (int)(raw->sizeX); j++) { - *ptr++ = *(raw->tmpR + j); - *ptr++ = *(raw->tmpG + j); - *ptr++ = *(raw->tmpB + j); - if (raw->sizeZ>3) { - *ptr++ = *(raw->tmpA + j); - } - } - } -} - - -static TK_RGBImageRec *tkRGBImageLoad(const char *fileName) -{ - rawImageRec *raw; - TK_RGBImageRec *final; - - raw = RawImageOpen(fileName); - if (!raw) { - fprintf(stderr, "File not found\n"); - return NULL; - } - final = (TK_RGBImageRec *)malloc(sizeof(TK_RGBImageRec)); - if (final == NULL) { - fprintf(stderr, "Out of memory!\n"); - RawImageClose(raw); - return NULL; - } - final->sizeX = raw->sizeX; - final->sizeY = raw->sizeY; - final->components = raw->sizeZ; - RawImageGetData(raw, final); - RawImageClose(raw); - return final; -} - - -static void FreeImage( TK_RGBImageRec *image ) -{ - free(image->data); - free(image); -} - - -/* - * Load an SGI .rgb file and generate a set of 2-D mipmaps from it. - * Input: imageFile - name of .rgb to read - * intFormat - internal texture format to use, or number of components - * Return: GL_TRUE if success, GL_FALSE if error. - */ -GLboolean LoadRGBMipmaps( const char *imageFile, GLint intFormat ) -{ - GLint w, h; - return LoadRGBMipmaps2( imageFile, GL_TEXTURE_2D, intFormat, &w, &h ); -} - - - -GLboolean LoadRGBMipmaps2( const char *imageFile, GLenum target, - GLint intFormat, GLint *width, GLint *height ) -{ - GLint error; - GLenum format; - TK_RGBImageRec *image; - - image = tkRGBImageLoad( imageFile ); - if (!image) { - return GL_FALSE; - } - - if (image->components==3) { - format = GL_RGB; - } - else if (image->components==4) { - format = GL_RGBA; - } - else { - /* not implemented */ - fprintf(stderr, - "Error in LoadRGBMipmaps %d-component images not implemented\n", - image->components ); - FreeImage(image); - return GL_FALSE; - } - - error = gluBuild2DMipmaps( target, - intFormat, - image->sizeX, image->sizeY, - format, - GL_UNSIGNED_BYTE, - image->data ); - - *width = image->sizeX; - *height = image->sizeY; - - FreeImage(image); - - return error ? GL_FALSE : GL_TRUE; -} - - - -/* - * Load an SGI .rgb file and return a pointer to the image data. - * Input: imageFile - name of .rgb to read - * Output: width - width of image - * height - height of image - * format - format of image (GL_RGB or GL_RGBA) - * Return: pointer to image data or NULL if error - */ -GLubyte *LoadRGBImage( const char *imageFile, GLint *width, GLint *height, - GLenum *format ) -{ - TK_RGBImageRec *image; - GLint bytes; - GLubyte *buffer; - - image = tkRGBImageLoad( imageFile ); - if (!image) { - return NULL; - } - - if (image->components==3) { - *format = GL_RGB; - } - else if (image->components==4) { - *format = GL_RGBA; - } - else { - /* not implemented */ - fprintf(stderr, - "Error in LoadRGBImage %d-component images not implemented\n", - image->components ); - FreeImage(image); - return NULL; - } - - *width = image->sizeX; - *height = image->sizeY; - - bytes = image->sizeX * image->sizeY * image->components; - buffer = (GLubyte *) malloc(bytes); - if (!buffer) { - FreeImage(image); - return NULL; - } - - memcpy( (void *) buffer, (void *) image->data, bytes ); - - FreeImage(image); - - return buffer; -} - -#define CLAMP( X, MIN, MAX ) ( (X)<(MIN) ? (MIN) : ((X)>(MAX) ? (MAX) : (X)) ) - - -static void ConvertRGBtoYUV(GLint w, GLint h, GLint texel_bytes, - const GLubyte *src, - GLushort *dest) -{ - GLint i, j; - - for (i = 0; i < h; i++) { - for (j = 0; j < w; j++) { - const GLfloat r = (src[0]) / 255.0; - const GLfloat g = (src[1]) / 255.0; - const GLfloat b = (src[2]) / 255.0; - GLfloat y, cr, cb; - GLint iy, icr, icb; - - y = r * 65.481 + g * 128.553 + b * 24.966 + 16; - cb = r * -37.797 + g * -74.203 + b * 112.0 + 128; - cr = r * 112.0 + g * -93.786 + b * -18.214 + 128; - /*printf("%f %f %f -> %f %f %f\n", r, g, b, y, cb, cr);*/ - iy = (GLint) CLAMP(y, 0, 254); - icb = (GLint) CLAMP(cb, 0, 254); - icr = (GLint) CLAMP(cr, 0, 254); - - if (j & 1) { - /* odd */ - *dest = (iy << 8) | icr; - } - else { - /* even */ - *dest = (iy << 8) | icb; - } - dest++; - src += texel_bytes; - } - } -} - - -/* - * Load an SGI .rgb file and return a pointer to the image data, converted - * to 422 yuv. - * - * Input: imageFile - name of .rgb to read - * Output: width - width of image - * height - height of image - * Return: pointer to image data or NULL if error - */ -GLushort *LoadYUVImage( const char *imageFile, GLint *width, GLint *height ) -{ - TK_RGBImageRec *image; - GLushort *buffer; - - image = tkRGBImageLoad( imageFile ); - if (!image) { - return NULL; - } - - if (image->components != 3 && image->components !=4 ) { - /* not implemented */ - fprintf(stderr, - "Error in LoadYUVImage %d-component images not implemented\n", - image->components ); - FreeImage(image); - return NULL; - } - - *width = image->sizeX; - *height = image->sizeY; - - buffer = (GLushort *) malloc( image->sizeX * image->sizeY * 2 ); - - if (buffer) - ConvertRGBtoYUV( image->sizeX, - image->sizeY, - image->components, - image->data, - buffer ); - - - FreeImage(image); - return buffer; -} - |