[libcamera-devel] [PATCH 1/3] android: capabilities: Use a throw-away config for YUV stream building

[Jacopo Mondi]

When building the list of supported YUV streams in getYUVResolutions()
the CameraConfiguration provided by the caller as first parameters is used.

As the CameraConfiguration will be later actually applied to the Camera,
avoid any possible overlap of the configuration parameters by using a
throw-away CameraConfiguration generated for the Viewfinder stream role
in getYUVResolutions().

It's also nicer to avoid having two functions with a similar purpose
such as getYUVResolutions() and getRawResolutions() with different
parameter lists, as the presence of a CameraConfiguration as first
parameter might be confusing to the reader.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/android/camera_capabilities.cpp | 10 +++++-----
 src/android/camera_capabilities.h   |  3 +--
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/src/android/camera_capabilities.cpp b/src/android/camera_capabilities.cpp
index 6b5edb66fad2..6543c2bbc6c3 100644
--- a/src/android/camera_capabilities.cpp
+++ b/src/android/camera_capabilities.cpp
@@ -138,13 +138,14 @@ int CameraCapabilities::initialize(std::shared_ptr<libcamera::Camera> camera,
 	return initializeStaticMetadata();
 }
 
-std::vector<Size> CameraCapabilities::getYUVResolutions(CameraConfiguration *cameraConfig,
-							const PixelFormat &pixelFormat,
+std::vector<Size> CameraCapabilities::getYUVResolutions(const PixelFormat &pixelFormat,
 							const std::vector<Size> &resolutions)
 {
 	std::vector<Size> supportedResolutions;
-
+	std::unique_ptr<CameraConfiguration> cameraConfig =
+		camera_->generateConfiguration({ StreamRole::Viewfinder });
 	StreamConfiguration &cfg = cameraConfig->at(0);
+
 	for (const Size &res : resolutions) {
 		cfg.pixelFormat = pixelFormat;
 		cfg.size = res;
@@ -324,8 +325,7 @@ int CameraCapabilities::initializeStreamConfigurations()
 		if (info.colourEncoding == PixelFormatInfo::ColourEncodingRAW)
 			resolutions = getRawResolutions(mappedFormat);
 		else
-			resolutions = getYUVResolutions(cameraConfig.get(),
-							mappedFormat,
+			resolutions = getYUVResolutions(mappedFormat,
 							cameraResolutions);
 
 		for (const Size &res : resolutions) {
diff --git a/src/android/camera_capabilities.h b/src/android/camera_capabilities.h
index 4f5be82595d6..e72bf084cd65 100644
--- a/src/android/camera_capabilities.h
+++ b/src/android/camera_capabilities.h
@@ -43,8 +43,7 @@ private:
 	};
 
 	std::vector<libcamera::Size>
-	getYUVResolutions(libcamera::CameraConfiguration *cameraConfig,
-			  const libcamera::PixelFormat &pixelFormat,
+	getYUVResolutions(const libcamera::PixelFormat &pixelFormat,
 			  const std::vector<libcamera::Size> &resolutions);
 	std::vector<libcamera::Size>
 	getRawResolutions(const libcamera::PixelFormat &pixelFormat);
-- 
2.32.0