Add another subsystem group.

[simgear.git] / simgear / screen / screen-dump.cxx

diff --git a/simgear/screen/screen-dump.cxx b/simgear/screen/screen-dump.cxx
index e986d61b9aee4b513216d54f7824a5a728044e9d..ecea865933dae8f7a7e363bd0e5f8620f4261bde 100644 (file)
--- a/simgear/screen/screen-dump.cxx
+++ b/simgear/screen/screen-dump.cxx
@@ -12,47 +12,49 @@
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 // Library General Public License for more details.
 //
-// You should have received a copy of the GNU Library General Public
-// License along with this library; if not, write to the
-// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-// Boston, MA  02111-1307, USA.
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
 
 #ifdef HAVE_CONFIG_H
-#  include <config.h>
+#  include <simgear_config.h>
 #endif
 
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>                     
+#ifdef WIN32
+# include <windows.h>
 #endif
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <limits.h>
 
-#include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
+#include <simgear/compiler.h>
+
+#include <osg/Image>
+#include <osgDB/WriteFile>
 
 #include "screen-dump.hxx"
 
 
-#define RGB  3                 // 3 bytes of color info per pixel
+#define RGB3 3                 // 3 bytes of color info per pixel
 #define RGBA 4                 // 4 bytes of color+alpha info
 
-void my_glWritePPMFile(const char *filename, GLubyte *buffer, int win_width, int win_height, int mode)
+bool sg_glWritePPMFile(const char *filename, GLubyte *buffer, int win_width, int win_height, int mode)
 {
     int i, j, k, q;
     unsigned char *ibuffer;
     FILE *fp;
     int pixelSize = mode==GL_RGBA?4:3;
 
-    ibuffer = (unsigned char *) malloc(win_width*win_height*RGB);
+    ibuffer = (unsigned char *) malloc(win_width*win_height*RGB3);
 
     if ( (fp = fopen(filename, "wb")) == NULL ) {
+       free(ibuffer);
        printf("Warning: cannot open %s\n", filename);
-       return;
+       return false;
     }
 
     fprintf(fp, "P6\n# CREATOR: glReadPixel()\n%d %d\n%d\n",
@@ -60,29 +62,23 @@ void my_glWritePPMFile(const char *filename, GLubyte *buffer, int win_width, int
     q = 0;
     for (i = 0; i < win_height; i++)
        for (j = 0; j < win_width; j++)
-           for (k = 0; k < RGB; k++)
+           for (k = 0; k < RGB3; k++)
                ibuffer[q++] = (unsigned char)
                    *(buffer + (pixelSize*((win_height-1-i)*win_width+j)+k));
-    fwrite(ibuffer, sizeof(unsigned char), RGB*win_width*win_height, fp);
+    fwrite(ibuffer, sizeof(unsigned char), RGB3*win_width*win_height, fp);
     fclose(fp);
     free(ibuffer);
 
-    printf("wrote file (%d x %d pixels, %d bytes)\n",
-          win_width, win_height, RGB*win_width*win_height);
+    printf("wrote file '%s' (%d x %d pixels, %d bytes)\n",
+          filename, win_width, win_height, RGB3*win_width*win_height);
+    return true;
 }
 
 
-// dump the screen buffer to a ppm file
-void my_glDumpWindow(const char *filename, int win_width, int win_height) {
-    GLubyte *buffer;
-
-    buffer = (GLubyte *) malloc(win_width*win_height*RGBA);
-
-    // read window contents from color buffer with glReadPixels
-    glFinish();
-    glReadPixels(0, 0, win_width, win_height, 
-                GL_RGBA, GL_UNSIGNED_BYTE, buffer);
-       my_glWritePPMFile( filename, buffer, win_width, win_height, GL_RGBA );
-    free(buffer);
+// dump the screen buffer to a png file, returns true on success
+bool sg_glDumpWindow(const char *filename, int win_width, int win_height) {
+  osg::ref_ptr<osg::Image> img(new osg::Image);
+  img->readPixels(0,0, win_width, win_height, GL_RGB, GL_UNSIGNED_BYTE);
+  return osgDB::writeImageFile(*img, filename);
 }