1 files changed, 134 insertions, 0 deletions
diff --git a/converter/ppm/ppmtompeg/fsize.c b/converter/ppm/ppmtompeg/fsize.c
new file mode 100644
index 00000000..3808405c
--- /dev/null
+++ b/converter/ppm/ppmtompeg/fsize.c
@@ -0,0 +1,134 @@
+/*===========================================================================*
+ * fsize.c								     *
+ *									     *
+ *	procedures to keep track of frame size				     *
+ *									     *
+ * EXPORTED PROCEDURES:							     *
+ *	Fsize_Reset							     *
+ *	Fsize_Note							     *
+ *	Fsize_Validate							     *
+ *									     *
+ * EXPORTED VARIABLES:							     *
+ *	Fsize_x								     *
+ *	Fsize_y								     *
+ *									     *
+ *===========================================================================*/
+
+/*
+ * Copyright (c) 1995 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
+ * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ */
+
+
+/*==============*
+ * HEADER FILES *
+ *==============*/
+
+#include "all.h"
+#include "fsize.h"
+#include "dct.h"
+
+
+/*==================*
+ * GLOBAL VARIABLES *
+ *==================*/
+int Fsize_x = 0;
+int Fsize_y = 0;
+
+
+/*=====================*
+ * EXPORTED PROCEDURES *
+ *=====================*/
+
+/*===========================================================================*
+ *
+ * Fsize_Reset
+ *
+ *	reset the frame size to 0
+ *
+ * RETURNS:	nothing
+ *
+ * SIDE EFFECTS:    Fsize_x, Fsize_y
+ *
+ *===========================================================================*/
+void
+Fsize_Reset(void) {
+    Fsize_x = Fsize_y = 0;
+}
+
+
+
+/*===========================================================================*
+ *
+ * Fsize_Validate
+ *
+ *	make sure that the x, y values are 16-pixel aligned
+ *
+ * RETURNS:	modifies the x, y values to 16-pixel alignment
+ *
+ * SIDE EFFECTS:    none
+ *
+ *===========================================================================*/
+void
+Fsize_Validate(int * const xP,
+               int * const yP) {
+
+    *xP &= ~(DCTSIZE * 2 - 1);  /* Zero the low-order bits */
+    *yP &= ~(DCTSIZE * 2 - 1);  /* Zero the low-order bits */
+}
+
+
+/*===========================================================================*
+ *
+ * Fsize_Note
+ *
+ *	note the given frame size and modify the global values as appropriate
+ *
+ * RETURNS:	nothing
+ *
+ * SIDE EFFECTS:    Fsize_x, Fsize_y
+ *
+ *===========================================================================*/
+void
+Fsize_Note(int          const id,
+           unsigned int const width,
+           unsigned int const height) {
+
+    Fsize_x = width;
+    Fsize_y = height;
+    Fsize_Validate(&Fsize_x, &Fsize_y);
+
+    if ((Fsize_x == 0) || (Fsize_y == 0)) {
+        fprintf(stderr,"Frame %d:  size is less than the minimum: %d x %d!\n",
+                id, DCTSIZE*2, DCTSIZE*2);
+        exit(1);
+    }
+
+#ifdef BLEAH
+    if (Fsize_x == 0) {
+	Fsize_x = width;
+	Fsize_y = height;
+	Fsize_Validate(&Fsize_x, &Fsize_y);
+    } else if (width < Fsize_x || height < Fsize_y) {
+	fprintf(stderr, "Frame %d: wrong size: (%d,%d).  Should be greater or equal to: (%d,%d)\n",
+		id, width, height, Fsize_x, Fsize_y);
+	exit(1);
+    }
+#endif
+}