From b44cb6b5f89b7f0c7b8124a689026918116bb03c Mon Sep 17 00:00:00 2001
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Sun, 13 Oct 2019 02:26:49 +0300
Subject: libcamera: buffer: Add const accessor to Buffer planes
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In order to inspect planes of a const Buffer, add a const accessor.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
---
 include/libcamera/buffer.h | 1 +
 src/libcamera/buffer.cpp   | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/libcamera/buffer.h b/include/libcamera/buffer.h
index c349b995..80602124 100644
--- a/include/libcamera/buffer.h
+++ b/include/libcamera/buffer.h
@@ -40,6 +40,7 @@ private:
 class BufferMemory final
 {
 public:
+	const std::vector<Plane> &planes() const { return planes_; }
 	std::vector<Plane> &planes() { return planes_; }
 
 private:
diff --git a/src/libcamera/buffer.cpp b/src/libcamera/buffer.cpp
index 4407201b..960eeb8f 100644
--- a/src/libcamera/buffer.cpp
+++ b/src/libcamera/buffer.cpp
@@ -181,6 +181,12 @@ void *Plane::mem()
  * image format is multi-planar.
  */
 
+/**
+ * \fn BufferMemory::planes() const
+ * \brief Retrieve the planes within the buffer
+ * \return A const reference to a vector holding all Planes within the buffer
+ */
+
 /**
  * \fn BufferMemory::planes()
  * \brief Retrieve the planes within the buffer
-- 
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