[libcamera-devel] [PATCH 03/15] libcamera: ipu3: cio2: Report format and sizes

[Jacopo Mondi]

Add two methods to the CIO2Device class to retrieve all the supported
PixelFormats and sizes.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/libcamera/pipeline/ipu3/cio2.cpp | 43 +++++++++++++++++++++++++++-
 src/libcamera/pipeline/ipu3/cio2.h   |  7 +++++
 2 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/src/libcamera/pipeline/ipu3/cio2.cpp b/src/libcamera/pipeline/ipu3/cio2.cpp
index 2ec8fcb42d92..b34194c5097f 100644
--- a/src/libcamera/pipeline/ipu3/cio2.cpp
+++ b/src/libcamera/pipeline/ipu3/cio2.cpp
@@ -33,7 +33,7 @@ static const std::map<uint32_t, PixelFormat> mbusCodesToPixelFormat = {
 } /* namespace */
 
 CIO2Device::CIO2Device()
-	: sensor_(nullptr), csi2_(nullptr), output_(nullptr)
+	: sensor_(nullptr), csi2_(nullptr), output_(nullptr), initialized_(false)
 {
 }
 
@@ -44,6 +44,45 @@ CIO2Device::~CIO2Device()
 	delete sensor_;
 }
 
+/**
+ * \brief Retrieve the list of supported PixelFormats
+ *
+ * Retrieve the list of supported pixel formats by matching the sensor produced
+ * media bus codes with the formats supported by the CIO2 unit.
+ *
+ * \return The list of supported PixelFormat
+ */
+std::vector<PixelFormat> CIO2Device::formats() const
+{
+	if (!initialized_)
+		return {};
+
+	std::vector<PixelFormat> formats;
+	for (unsigned int code : sensor_->mbusCodes()) {
+		auto it = mbusCodesToPixelFormat.find(code);
+		if (it != mbusCodesToPixelFormat.end())
+			formats.push_back(it->second);
+	}
+
+	return formats;
+}
+
+/**
+ * \brief Retrieve the list of supported size ranges
+ * \return The list of supported SizeRange
+ */
+std::vector<SizeRange> CIO2Device::sizes() const
+{
+	if (!initialized_)
+		return {};
+
+	std::vector<SizeRange> sizes;
+	for (const Size &size : sensor_->sizes())
+		sizes.emplace_back(size, size);
+
+	return sizes;
+}
+
 /**
  * \brief Initialize components of the CIO2 device with \a index
  * \param[in] media The CIO2 media device
@@ -127,6 +166,8 @@ int CIO2Device::init(const MediaDevice *media, unsigned int index)
 
 	output_->bufferReady.connect(this, &CIO2Device::cio2BufferReady);
 
+	initialized_ = true;
+
 	return 0;
 }
 
diff --git a/src/libcamera/pipeline/ipu3/cio2.h b/src/libcamera/pipeline/ipu3/cio2.h
index dc764b101f11..7e793e8450f5 100644
--- a/src/libcamera/pipeline/ipu3/cio2.h
+++ b/src/libcamera/pipeline/ipu3/cio2.h
@@ -18,7 +18,9 @@ namespace libcamera {
 class CameraSensor;
 class FrameBuffer;
 class MediaDevice;
+class PixelFormat;
 class Request;
+class SizeRange;
 class V4L2DeviceFormat;
 class V4L2Subdevice;
 class V4L2VideoDevice;
@@ -33,6 +35,9 @@ public:
 	CIO2Device();
 	~CIO2Device();
 
+	std::vector<PixelFormat> formats() const;
+	std::vector<SizeRange> sizes() const;
+
 	int init(const MediaDevice *media, unsigned int index);
 	int configure(const Size &size, V4L2DeviceFormat *outputFormat);
 
@@ -61,6 +66,8 @@ private:
 
 	std::vector<std::unique_ptr<FrameBuffer>> buffers_;
 	std::queue<FrameBuffer *> availableBuffers_;
+
+	bool initialized_;
 };
 
 } /* namespace libcamera */
-- 
2.27.0