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Test programs for ycbcr extension
This commit is contained in:
Keith Whitwell
parent
0421ce4b46
commit
eea72ff722
2 changed files with 523 additions and 0 deletions
233
progs/tests/yuvrect.c
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233
progs/tests/yuvrect.c
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/*
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* Test the GL_NV_texture_rectangle and GL_MESA_ycrcb_texture extensions.
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*
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* Brian Paul 13 September 2002
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*/
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#include <assert.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define GL_GLEXT_PROTOTYPES
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#include <GL/glut.h>
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#include "../util/readtex.c" /* I know, this is a hack. */
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#define TEXTURE_FILE "../images/girl.rgb"
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static GLfloat Xrot = 0, Yrot = 0, Zrot = 0;
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static GLint ImgWidth, ImgHeight;
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static GLenum ImgFormat;
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static GLubyte *Image = NULL;
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static GLushort *ImageYUV = NULL;
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static void DrawObject(void)
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{
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glBegin(GL_QUADS);
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glTexCoord2f(0, 0);
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glVertex2f(-1.0, -1.0);
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glTexCoord2f(ImgWidth, 0);
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glVertex2f(1.0, -1.0);
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glTexCoord2f(ImgWidth, ImgHeight);
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glVertex2f(1.0, 1.0);
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glTexCoord2f(0, ImgHeight);
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glVertex2f(-1.0, 1.0);
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glEnd();
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}
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static void Display( void )
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{
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glClear( GL_COLOR_BUFFER_BIT );
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glPushMatrix();
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glRotatef(Xrot, 1.0, 0.0, 0.0);
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glRotatef(Yrot, 0.0, 1.0, 0.0);
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glRotatef(Zrot, 0.0, 0.0, 1.0);
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DrawObject();
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glPopMatrix();
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glutSwapBuffers();
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}
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static void Reshape( int width, int height )
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{
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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glTranslatef( 0.0, 0.0, -15.0 );
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}
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static void Key( unsigned char key, int x, int y )
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{
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(void) x;
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(void) y;
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switch (key) {
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case 27:
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exit(0);
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break;
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}
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glutPostRedisplay();
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}
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static void SpecialKey( int key, int x, int y )
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{
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float step = 3.0;
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(void) x;
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(void) y;
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switch (key) {
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case GLUT_KEY_UP:
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Xrot += step;
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break;
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case GLUT_KEY_DOWN:
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Xrot -= step;
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break;
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case GLUT_KEY_LEFT:
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Yrot += step;
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break;
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case GLUT_KEY_RIGHT:
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Yrot -= step;
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break;
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}
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glutPostRedisplay();
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}
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#define CLAMP( X, MIN, MAX ) ( (X)<(MIN) ? (MIN) : ((X)>(MAX) ? (MAX) : (X)) )
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static void ConvertRGBtoYUV(GLint w, GLint h, const GLubyte *src,
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GLushort *dest)
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{
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GLint i, j;
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for (i = 0; i < h; i++) {
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for (j = 0; j < w; j++) {
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const GLfloat r = (*src++) / 255.0;
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const GLfloat g = (*src++) / 255.0;
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const GLfloat b = (*src++) / 255.0;
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GLfloat y, cr, cb;
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GLint iy, icr, icb;
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y = r * 65.481 + g * 128.553 + b * 24.966 + 16;
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cb = r * -37.797 + g * -74.203 + b * 112.0 + 128;
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cr = r * 112.0 + g * -93.786 + b * -18.214 + 128;
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/*printf("%f %f %f -> %f %f %f\n", r, g, b, y, cb, cr);*/
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iy = (GLint) CLAMP(y, 0, 254);
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icb = (GLint) CLAMP(cb, 0, 254);
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icr = (GLint) CLAMP(cr, 0, 254);
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if (j & 1) {
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/* odd */
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*dest = (iy << 8) | icr;
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}
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else {
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/* even */
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*dest = (iy << 8) | icb;
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}
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dest++;
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}
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}
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}
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static void Init( int argc, char *argv[] )
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{
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GLuint texObj = 100;
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const char *file;
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if (!glutExtensionSupported("GL_NV_texture_rectangle")) {
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printf("Sorry, GL_NV_texture_rectangle is required\n");
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exit(0);
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}
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if (!glutExtensionSupported("GL_MESA_ycbcr_texture")) {
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printf("Sorry, GL_MESA_ycbcr_texture is required\n");
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exit(0);
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}
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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glBindTexture(GL_TEXTURE_RECTANGLE_NV, texObj);
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#ifdef LINEAR_FILTER
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/* linear filtering looks much nicer but is much slower for Mesa */
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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#else
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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glTexParameteri(GL_TEXTURE_RECTANGLE_NV, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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#endif
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if (argc > 1)
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file = argv[1];
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else
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file = TEXTURE_FILE;
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Image = LoadRGBImage(file, &ImgWidth, &ImgHeight, &ImgFormat);
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if (!Image) {
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printf("Couldn't read %s\n", TEXTURE_FILE);
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exit(0);
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}
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printf("Image: %dx%d\n", ImgWidth, ImgHeight);
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ImageYUV = (GLushort *) malloc(ImgWidth * ImgHeight * sizeof(GLushort));
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ConvertRGBtoYUV(ImgWidth, ImgHeight, Image, ImageYUV);
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glTexImage2D(GL_TEXTURE_RECTANGLE_NV, 0,
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GL_YCBCR_MESA, ImgWidth, ImgHeight, 0,
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GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_MESA, ImageYUV);
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assert(glGetError() == GL_NO_ERROR);
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glTexSubImage2D(GL_TEXTURE_RECTANGLE_NV, 0,
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0, 0, ImgWidth, ImgHeight,
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GL_YCBCR_MESA, GL_UNSIGNED_SHORT_8_8_MESA, ImageYUV);
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assert(glGetError() == GL_NO_ERROR);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glEnable(GL_TEXTURE_RECTANGLE_NV);
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glShadeModel(GL_FLAT);
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glClearColor(0.3, 0.3, 0.4, 1.0);
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if (argc > 1 && strcmp(argv[1], "-info")==0) {
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printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
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printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
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printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
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printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
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}
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}
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int main( int argc, char *argv[] )
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{
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glutInit( &argc, argv );
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glutInitWindowSize( 300, 300 );
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glutInitWindowPosition( 0, 0 );
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glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
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glutCreateWindow(argv[0] );
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Init( argc, argv );
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glutReshapeFunc( Reshape );
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glutKeyboardFunc( Key );
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glutSpecialFunc( SpecialKey );
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glutDisplayFunc( Display );
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glutMainLoop();
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return 0;
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}
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290
progs/tests/yuvsquare.c
Normal file
290
progs/tests/yuvsquare.c
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/*
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* Test the GL_NV_texture_rectangle and GL_MESA_ycrcb_texture extensions.
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*
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* Brian Paul 13 September 2002
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*/
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define GL_GLEXT_PROTOTYPES
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#include <GL/glut.h>
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#include "../util/readtex.c" /* I know, this is a hack. */
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#define TEXTURE_FILE "../images/tile.rgb"
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static GLfloat Xrot = 0, Yrot = 0, Zrot = 0;
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static GLint ImgWidth, ImgHeight;
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static GLenum ImgFormat;
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static GLushort *ImageYUV = NULL;
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static void DrawObject(void)
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{
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glBegin(GL_QUADS);
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glTexCoord2f(0, 0);
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glVertex2f(-1.0, -1.0);
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glTexCoord2f(1, 0);
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glVertex2f(1.0, -1.0);
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glTexCoord2f(1, 1);
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glVertex2f(1.0, 1.0);
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glTexCoord2f(0, 1);
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glVertex2f(-1.0, 1.0);
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glEnd();
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}
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static void Display( void )
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{
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glClear( GL_COLOR_BUFFER_BIT );
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glPushMatrix();
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glRotatef(Xrot, 1.0, 0.0, 0.0);
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glRotatef(Yrot, 0.0, 1.0, 0.0);
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glRotatef(Zrot, 0.0, 0.0, 1.0);
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DrawObject();
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glPopMatrix();
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glutSwapBuffers();
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}
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static void Reshape( int width, int height )
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{
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glViewport( 0, 0, width, height );
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glMatrixMode( GL_PROJECTION );
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glLoadIdentity();
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glFrustum( -1.0, 1.0, -1.0, 1.0, 10.0, 100.0 );
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glMatrixMode( GL_MODELVIEW );
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glLoadIdentity();
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glTranslatef( 0.0, 0.0, -15.0 );
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}
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static void Key( unsigned char key, int x, int y )
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{
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(void) x;
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(void) y;
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switch (key) {
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case 27:
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exit(0);
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break;
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}
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glutPostRedisplay();
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}
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static void SpecialKey( int key, int x, int y )
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{
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float step = 3.0;
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(void) x;
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(void) y;
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switch (key) {
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case GLUT_KEY_UP:
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Xrot += step;
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break;
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case GLUT_KEY_DOWN:
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Xrot -= step;
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break;
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case GLUT_KEY_LEFT:
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Yrot += step;
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break;
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case GLUT_KEY_RIGHT:
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Yrot -= step;
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break;
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}
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glutPostRedisplay();
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}
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#define CLAMP( X, MIN, MAX ) ( (X)<(MIN) ? (MIN) : ((X)>(MAX) ? (MAX) : (X)) )
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static void ConvertRGBtoYUV(GLint w, GLint h, GLint texel_bytes,
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const GLubyte *src,
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GLushort *dest)
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{
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GLint i, j;
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for (i = 0; i < h; i++) {
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for (j = 0; j < w; j++) {
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const GLfloat r = (src[0]) / 255.0;
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const GLfloat g = (src[1]) / 255.0;
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const GLfloat b = (src[2]) / 255.0;
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GLfloat y, cr, cb;
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GLint iy, icr, icb;
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y = r * 65.481 + g * 128.553 + b * 24.966 + 16;
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cb = r * -37.797 + g * -74.203 + b * 112.0 + 128;
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cr = r * 112.0 + g * -93.786 + b * -18.214 + 128;
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/*printf("%f %f %f -> %f %f %f\n", r, g, b, y, cb, cr);*/
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iy = (GLint) CLAMP(y, 0, 254);
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icb = (GLint) CLAMP(cb, 0, 254);
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icr = (GLint) CLAMP(cr, 0, 254);
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if (j & 1) {
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/* odd */
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*dest = (iy << 8) | icr;
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}
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else {
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/* even */
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*dest = (iy << 8) | icb;
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}
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dest++;
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src += texel_bytes;
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}
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}
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}
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/*
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* Load an SGI .rgb file and return a pointer to the image data.
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* Input: imageFile - name of .rgb to read
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* Output: width - width of image
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* height - height of image
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* format - format of image (GL_RGB or GL_RGBA)
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* Return: pointer to image data or NULL if error
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*/
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GLushort *LoadYUVImage( const char *imageFile, GLint *width, GLint *height,
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GLenum *format )
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{
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TK_RGBImageRec *image;
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GLint bytes;
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GLushort *buffer;
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image = tkRGBImageLoad( imageFile );
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if (!image) {
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return NULL;
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}
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if (image->components==3) {
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*format = GL_RGB;
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}
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else if (image->components==4) {
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*format = GL_RGBA;
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}
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else {
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/* not implemented */
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fprintf(stderr,
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"Error in LoadYUVImage %d-component images not implemented\n",
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image->components );
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return NULL;
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}
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*width = image->sizeX;
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*height = image->sizeY;
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buffer = (GLushort *) malloc( image->sizeX * image->sizeY * 2 );
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if (buffer)
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ConvertRGBtoYUV( image->sizeX,
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image->sizeY,
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image->components,
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image->data,
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buffer );
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FreeImage(image);
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return buffer;
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}
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/* #define LINEAR_FILTER */
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static void Init( int argc, char *argv[] )
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{
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GLuint texObj = 100;
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const char *file;
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int error;
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if (!glutExtensionSupported("GL_MESA_ycbcr_texture")) {
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printf("Sorry, GL_MESA_ycbcr_texture is required\n");
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exit(0);
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}
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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glBindTexture(GL_TEXTURE_2D, texObj);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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if (argc > 1)
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file = argv[1];
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else
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file = TEXTURE_FILE;
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ImageYUV = LoadYUVImage(file, &ImgWidth, &ImgHeight, &ImgFormat);
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if (!ImageYUV) {
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printf("Couldn't read %s\n", TEXTURE_FILE);
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exit(0);
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}
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printf("Image: %dx%d\n", ImgWidth, ImgHeight);
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/* error = gluBuild2DMipmaps( GL_TEXTURE_2D, */
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/* GL_YCBCR_MESA, */
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/* ImgWidth, ImgHeight, */
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/* GL_YCBCR_MESA, */
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/* GL_UNSIGNED_SHORT_8_8_MESA, */
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/* ImageYUV ); */
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#if 0
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glTexImage2D(GL_TEXTURE_2D, 0,
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GL_RGB,
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ImgWidth, ImgHeight, 0,
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GL_RGB,
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GL_UNSIGNED_SHORT_5_6_5, ImageYUV);
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#else
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glTexImage2D(GL_TEXTURE_2D, 0,
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GL_YCBCR_MESA,
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ImgWidth, ImgHeight, 0,
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GL_YCBCR_MESA,
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GL_UNSIGNED_SHORT_8_8_MESA, ImageYUV);
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#endif
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glEnable(GL_TEXTURE_2D);
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glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
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glShadeModel(GL_FLAT);
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glClearColor(0.3, 0.3, 0.4, 1.0);
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if (argc > 1 && strcmp(argv[1], "-info")==0) {
|
||||
printf("GL_RENDERER = %s\n", (char *) glGetString(GL_RENDERER));
|
||||
printf("GL_VERSION = %s\n", (char *) glGetString(GL_VERSION));
|
||||
printf("GL_VENDOR = %s\n", (char *) glGetString(GL_VENDOR));
|
||||
printf("GL_EXTENSIONS = %s\n", (char *) glGetString(GL_EXTENSIONS));
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
int main( int argc, char *argv[] )
|
||||
{
|
||||
glutInit( &argc, argv );
|
||||
glutInitWindowSize( 300, 300 );
|
||||
glutInitWindowPosition( 0, 0 );
|
||||
glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE );
|
||||
glutCreateWindow(argv[0] );
|
||||
|
||||
Init( argc, argv );
|
||||
|
||||
glutReshapeFunc( Reshape );
|
||||
glutKeyboardFunc( Key );
|
||||
glutSpecialFunc( SpecialKey );
|
||||
glutDisplayFunc( Display );
|
||||
|
||||
glutMainLoop();
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue