--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/xv_ext_test.c	Tue Jan 04 05:17:43 2005 +0000
@@ -0,0 +1,120 @@
+#include <stdio.h>
+#include <X11/Intrinsic.h>
+#include <X11/extensions/Xvlib.h>
+
+char *XvAdaptorTypeMaskToString( int mask )
+{
+  static char buf[160];
+
+  buf[0] = '\0';
+  if ( mask & XvInputMask  )  sprintf( buf+strlen(buf), "XvInputMask, " );
+  if ( mask & XvOutputMask )  sprintf( buf+strlen(buf), "XvOutputMask, " );
+  if ( mask & XvVideoMask  )  sprintf( buf+strlen(buf), "XvVideoMask, " );
+  if ( mask & XvStillMask  )  sprintf( buf+strlen(buf), "XvStillMask, " );
+  if ( mask & XvImageMask  )  sprintf( buf+strlen(buf), "XvImageMask, " );
+
+  if ( buf[0] )
+    buf[ strlen(buf)-2 ] = '\0';
+  return buf;
+}
+
+int main()
+{
+  Display *display;
+  XvImageFormatValues *formats;
+  XvAdaptorInfo *adaptors;
+  int            num_adaptors, num_formats;
+  int            i,j;
+  unsigned int   xv_version, xv_release, xv_request_base,
+                 xv_event_base, xv_error_base;
+
+  display = XOpenDisplay(NULL);
+
+  /*  XvQueryVersion  */
+  if ( XvQueryExtension( display, 
+                         &xv_version, &xv_release, &xv_request_base,
+                         &xv_event_base, &xv_error_base ) != Success ) {
+    fprintf( stderr, "XvQueryExtension failed\n" );
+    exit(1);
+  }
+  printf( "\nXvQueryExtension():\n" );
+  printf( "  version = %d, release = %d, request_base = %d,\n",
+          xv_version, xv_release, xv_request_base );
+  printf( "  event_base = %d, error_base = %d\n",
+          xv_event_base, xv_error_base );
+
+  /*  XvQueryAdaptors  */
+  XvQueryAdaptors( display, DefaultRootWindow(display), &num_adaptors, 
+                   &adaptors);
+
+  printf( "\nXvQueryAdaptors():\n" );
+  for ( i = 0; i < num_adaptors; i++ ) {
+    printf( "  Adaptor %2d:\n", i );
+    printf( "    base_id      = %ld\n", adaptors[i].base_id );
+    printf( "    num_ports    = %ld\n", adaptors[i].num_ports );
+    printf( "    type         = %d (%s)\n", 
+            adaptors[i].type, 
+            XvAdaptorTypeMaskToString( adaptors[i].type ) );
+    printf( "    name         = %s\n", adaptors[i].name );
+    printf( "    num_adaptors = %ld\n", adaptors[i].num_adaptors);
+    printf( "    num_formats  = %ld\n", adaptors[i].num_formats);
+    printf( "    formats      =\n" );
+
+    for ( j = 0; j < adaptors[i].num_formats; j++ )
+      printf( "      Format %2d:  depth = %.2d, visual_id = 0x%.2lx\n", 
+              j, 
+              adaptors[i].formats[j].depth, 
+              adaptors[i].formats[j].visual_id );
+  }
+
+  /*  XvListImageFormats  */
+  printf( "\nXvListImageFormats():\n" );
+  for ( i = 0; i < num_adaptors; i++ ) {
+    printf( "  Adaptor %2d:\n", i );
+    formats = XvListImageFormats( display, adaptors[i].base_id, 
+                                  &num_formats );
+    printf( "    num_formats = %d\n", num_formats );
+    for ( j = 0; j < num_formats; j++ ) {
+      printf( "    Format %2d:\n", j );
+      printf( "      id                = %d\n", formats[j].id               );
+      printf( "      type              = %d (%s)\n", formats[j].type,
+              formats[j].type == XvRGB ? "XvRGB" : "XvYUV" );
+      printf( "      byte_order        = %d (%s)\n", 
+              formats[j].byte_order,
+              formats[j].byte_order == LSBFirst ? "LSBFirst" : "MSBFirst" );
+      printf( "      guid              = %.4s\n", formats[j].guid           );
+      printf( "      bits_per_pixel    = %d\n", formats[j].bits_per_pixel   );
+      printf( "      format            = %d (%s)\n", formats[j].format,
+              formats[j].format == XvPacked ? "XvPacked" : "XvPlanar" );
+      printf( "      num_planes        = %d\n", formats[j].num_planes       );
+
+      if ( formats[j].type == XvRGB ) {
+        printf( "      depth             = %d\n", formats[j].depth          );
+        printf( "      red_mask          = %x\n", formats[j].red_mask       );
+        printf( "      green_mask        = %x\n", formats[j].green_mask     );
+        printf( "      blue_mask         = %x\n", formats[j].blue_mask      );
+      }
+      if ( formats[j].type == XvYUV ) {
+        printf( "      sample_bits (yuv) = ( %d, %d, %d )\n",
+                formats[j].y_sample_bits, 
+                formats[j].u_sample_bits, 
+                formats[j].v_sample_bits );
+        printf( "      horz_period (yuv) = ( %d, %d, %d )\n", 
+                formats[j].horz_y_period,
+                formats[j].horz_u_period,
+                formats[j].horz_v_period );
+        printf( "      vert_period       = ( %d, %d, %d )\n", 
+                formats[j].vert_y_period,
+                formats[j].vert_u_period,
+                formats[j].vert_v_period );
+        printf( "      component_order = %.32s\n", 
+                formats[j].component_order );
+        printf( "      scanline_order  = %d\n", formats[j].scanline_order   );
+      }
+    }
+  }
+
+  XvFreeAdaptorInfo( adaptors );
+  return(0);
+}
+