[libcamera-devel,RFC,1/2] libcamera: bayer_format: Add toMbusCode method
diff mbox series

Message ID 20221103104027.4197-2-david.plowman@raspberrypi.com
State Superseded
Headers show
Series
  • Resolve invalid attempts to set sensor flip controls
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Commit Message

David Plowman Nov. 3, 2022, 10:40 a.m. UTC 
This makes it easier to perform transformations on Bayer type mbus
codes by converting them to a BayerFormat, doing the transform, and
then converting them back again.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
---
 include/libcamera/internal/bayer_format.h |  1 +
 src/libcamera/bayer_format.cpp            | 12 ++++++++++++
 2 files changed, 13 insertions(+)

Patch
diff mbox series 

diff --git a/include/libcamera/internal/bayer_format.h b/include/libcamera/internal/bayer_format.h
index 78ba3969..09f756c4 100644
--- a/include/libcamera/internal/bayer_format.h
+++ b/include/libcamera/internal/bayer_format.h
@@ -47,6 +47,7 @@  public:
 	}
 
 	static const BayerFormat &fromMbusCode(unsigned int mbusCode);
+	unsigned int toMbusCode(bool &valid) const;
 	bool isValid() const { return bitDepth != 0; }
 
 	std::string toString() const;
diff --git a/src/libcamera/bayer_format.cpp b/src/libcamera/bayer_format.cpp
index f27cc166..a03c58c0 100644
--- a/src/libcamera/bayer_format.cpp
+++ b/src/libcamera/bayer_format.cpp
@@ -226,6 +226,18 @@  const BayerFormat &BayerFormat::fromMbusCode(unsigned int mbusCode)
 		return it->second;
 }
 
+/**
+ * \brief Retrieve the media bus code corresponding this this BayerFormat
+ * \param[out] valid Set to true if a matching media bus code was found, else false
+ */
+unsigned int BayerFormat::toMbusCode(bool &valid) const
+{
+	auto it = std::find_if(mbusCodeToBayer.begin(), mbusCodeToBayer.end(),
+			       [this](const auto &i) { return i.second == *this; });
+	valid = it != mbusCodeToBayer.end();
+	return valid ? it->first : 0;
+}
+
 /**
  * \fn BayerFormat::isValid()
  * \brief Return whether a BayerFormat is valid