sync code with last improvements from OpenBSD

lib/libxcvt/include/libxcvt/libxcvt.h

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+/*
+ * Copyright 2005-2006 Luc Verhaegen.
+ * Copyright © 2021 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef _LIBCVT_H_
+#define _LIBCVT_H_
+
+#include <stdbool.h>
+#include <libxcvt/libxcvt_mode.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct libxcvt_mode_info *
+libxcvt_gen_mode_info(int   hdisplay,
+                      int   vdisplay,
+                      float vrefresh,
+                      bool  reduced,
+                      bool  interlaced);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LIBCVT_H_ */

lib/libxcvt/include/libxcvt/libxcvt_mode.h

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+/*
+ * Copyright © 2000 Compaq Computer Corporation
+ * Copyright © 2002 Hewlett Packard Company
+ * Copyright © 2006 Intel Corporation
+ * Copyright © 2008, 2021 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ *
+ */
+
+#ifndef _LIBXCVT_MODE_H_
+#define _LIBXCVT_MODE_H_
+
+#include <stdint.h>
+
+/* Conveniently chosen to match the RandR definitions */
+enum  libxcvt_mode_flags {
+    LIBXCVT_MODE_FLAG_HSYNC_POSITIVE    = (1 << 0),
+    LIBXCVT_MODE_FLAG_HSYNC_NEGATIVE    = (1 << 1),
+    LIBXCVT_MODE_FLAG_VSYNC_POSITIVE    = (1 << 2),
+    LIBXCVT_MODE_FLAG_VSYNC_NEGATIVE    = (1 << 3),
+    LIBXCVT_MODE_FLAG_INTERLACE         = (1 << 4),
+};
+
+struct libxcvt_mode_info {
+    uint32_t                hdisplay;
+    uint32_t                vdisplay;
+    float                   vrefresh;
+    float                   hsync;
+    uint64_t                dot_clock;
+    uint16_t                hsync_start;
+    uint16_t                hsync_end;
+    uint16_t                htotal;
+    uint16_t                vsync_start;
+    uint16_t                vsync_end;
+    uint16_t                vtotal;
+    enum libxcvt_mode_flags mode_flags;
+};
+
+#endif /* _LIBXCVT_MODE_H_ */

lib/libxcvt/include/libxcvt/meson.build

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+install_headers('libxcvt.h','libxcvt_mode.h', subdir: 'libxcvt')

lib/libxcvt/include/meson.build

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+subdir('libxcvt')