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authorNaushir Patuck <naush@raspberrypi.com>2020-05-03 16:48:42 +0100
committerLaurent Pinchart <laurent.pinchart@ideasonboard.com>2020-05-11 23:54:40 +0300
commit0db2c8dc75e466e7648dc1b95380495c6a126349 (patch)
treefc723a251981ded749c900947a2f510ed56e60da /src/ipa/raspberrypi/controller/contrast_status.h
parent740fd1b62f670bd1ad4965ef0866ef5d51bdf947 (diff)
libcamera: ipa: Raspberry Pi IPA
Initial implementation of the Raspberry Pi (BCM2835) libcamera IPA and associated libraries. All code is licensed under the BSD-2-Clause terms. Copyright (c) 2019-2020 Raspberry Pi Trading Ltd. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src/ipa/raspberrypi/controller/contrast_status.h')
-rw-r--r--src/ipa/raspberrypi/controller/contrast_status.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/src/ipa/raspberrypi/controller/contrast_status.h b/src/ipa/raspberrypi/controller/contrast_status.h
new file mode 100644
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+++ b/src/ipa/raspberrypi/controller/contrast_status.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi (Trading) Limited
+ *
+ * contrast_status.h - contrast (gamma) control algorithm status
+ */
+#pragma once
+
+// The "contrast" algorithm creates a gamma curve, optionally doing a little bit
+// of contrast stretching based on the AGC histogram.
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define CONTRAST_NUM_POINTS 33
+
+struct ContrastPoint {
+ uint16_t x;
+ uint16_t y;
+};
+
+struct ContrastStatus {
+ struct ContrastPoint points[CONTRAST_NUM_POINTS];
+ double brightness;
+ double contrast;
+};
+
+#ifdef __cplusplus
+}
+#endif