pipeline: ipa: raspberrypi: Refactor and move the Raspberry Pi code

Split the Raspberry Pi pipeline handler and IPA source code into common
and VC4/BCM2835 specific file structures.

For the pipeline handler, the common code files now live in
src/libcamera/pipeline/rpi/common/
and the VC4-specific files in src/libcamera/pipeline/rpi/vc4/.

For the IPA, the common code files now live in
src/ipa/rpi/{cam_helper,controller}/
and the vc4 specific files in src/ipa/rpi/vc4/. With this change, the
camera tuning files are now installed under share/libcamera/ipa/rpi/vc4/.

To build the pipeline and IPA, the meson configuration options have now
changed from "raspberrypi" to "rpi/vc4":

meson setup build -Dipas=rpi/vc4 -Dpipelines=rpi/vc4

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/ipa/rpi/controller/black_level_status.h b/src/ipa/rpi/controller/black_level_status.h
new file mode 100644
index 00000000..fd5e4ccb
--- /dev/null
+++ b/src/ipa/rpi/controller/black_level_status.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+/*
+ * Copyright (C) 2019, Raspberry Pi Ltd
+ *
+ * black_level_status.h - black level control algorithm status
+ */
+#pragma once
+
+/* The "black level" algorithm stores the black levels to use. */
+
+struct BlackLevelStatus {
+	uint16_t blackLevelR; /* out of 16 bits */
+	uint16_t blackLevelG;
+	uint16_t blackLevelB;
+};