From 27358a24a0113a62492923abe35e8660ed7335ef Mon Sep 17 00:00:00 2001
From: Keith Whitwell <keith@tungstengraphics.com>
Date: Tue, 20 May 2003 09:54:58 +0000
Subject: move LoadYUVImage into readtex.c

---
 progs/tests/yuvsquare.c | 107 +-----------------------------------------------
 1 file changed, 1 insertion(+), 106 deletions(-)

(limited to 'progs/tests/yuvsquare.c')

diff --git a/progs/tests/yuvsquare.c b/progs/tests/yuvsquare.c
index 1d2ce135fe..eab255b427 100644
--- a/progs/tests/yuvsquare.c
+++ b/progs/tests/yuvsquare.c
@@ -18,7 +18,6 @@
 
 static GLfloat Xrot = 0, Yrot = 0, Zrot = 0;
 static GLint ImgWidth, ImgHeight;
-static GLenum ImgFormat;
 static GLushort *ImageYUV = NULL;
 
 
@@ -108,94 +107,6 @@ static void SpecialKey( int key, int x, int y )
 
 #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.
- * 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
- */
-GLushort *LoadYUVImage( const char *imageFile, GLint *width, GLint *height,
-                       GLenum *format )
-{
-   TK_RGBImageRec *image;
-   GLint bytes;
-   GLushort *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 LoadYUVImage %d-component images not implemented\n",
-              image->components );
-      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;
-}
-
 
 
 /* #define LINEAR_FILTER */
@@ -222,7 +133,7 @@ static void Init( int argc, char *argv[] )
    else
       file = TEXTURE_FILE;
 
-   ImageYUV = LoadYUVImage(file, &ImgWidth, &ImgHeight, &ImgFormat);
+   ImageYUV = LoadYUVImage(file, &ImgWidth, &ImgHeight );
    if (!ImageYUV) {
       printf("Couldn't read %s\n", TEXTURE_FILE);
       exit(0);
@@ -230,28 +141,12 @@ static void Init( int argc, char *argv[] )
 
    printf("Image: %dx%d\n", ImgWidth, ImgHeight);
 
-/*    error = gluBuild2DMipmaps( GL_TEXTURE_2D, */
-/*                               GL_YCBCR_MESA, */
-/*                               ImgWidth, ImgHeight, */
-/*                               GL_YCBCR_MESA, */
-/* 			      GL_UNSIGNED_SHORT_8_8_MESA, */
-/*                               ImageYUV ); */
-
-
 
-#if 0
-   glTexImage2D(GL_TEXTURE_2D, 0, 
-		GL_RGB,  
- 		ImgWidth, ImgHeight, 0, 
-		GL_RGB,  
- 		GL_UNSIGNED_SHORT_5_6_5, ImageYUV); 
-#else
    glTexImage2D(GL_TEXTURE_2D, 0,
                 GL_YCBCR_MESA, 
 		ImgWidth, ImgHeight, 0,
                 GL_YCBCR_MESA, 
 		GL_UNSIGNED_SHORT_8_8_MESA, ImageYUV);
-#endif
 
    glEnable(GL_TEXTURE_2D);
 
-- 
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