1 files changed, 39 insertions, 0 deletions
diff --git a/circuitpython/lib/quirc/demo/convert.h b/circuitpython/lib/quirc/demo/convert.h
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+++ b/circuitpython/lib/quirc/demo/convert.h
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+/* quirc -- QR-code recognition library
+ * Copyright (C) 2010-2012 Daniel Beer <dlbeer@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, 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 CONVERT_H_
+#define CONVERT_H_
+
+#include <stdint.h>
+
+/* Convert 4:2:2 YUYV format to RGB32 format. The source and destination
+ * frames are expected to be the same size.
+ */
+void yuyv_to_rgb32(const uint8_t *src, int src_pitch,
+		   int w, int h,
+		   uint8_t *dst, int dst_pitch);
+
+/* Extract the luma channel from a 4:2:2 YUYV image. */
+void yuyv_to_luma(const uint8_t *src, int src_pitch,
+		  int w, int h,
+		  uint8_t *dst, int dst_pitch);
+
+/* Extract the luma channel from an RGB32 image. */
+void rgb32_to_luma(const uint8_t *src, int src_pitch,
+		   int w, int h,
+		   uint8_t *dst, int dst_pitch);
+
+#endif