[libcamera-devel] [PATCH 5/5] android: camera_device: List RAW resolutions

[Jacopo Mondi]

The resolutions supported for the RAW formats cannot be tested from
a list of known sizes like the processed ones. This is mainly due to the
fact RAW streams are produced by capturing frames at the CSI-2 receiver
output and their size corresponds to the sensor's native sizes.

In order to obtain the RAW frame size generate a temporary
CameraConfiguration for the Role::StillCaptureRAW role and inspect the
map of StreamFormats returned by the pipeline handler.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/android/camera_device.cpp | 21 +++++++++++++++++----
 src/android/camera_device.h   |  2 ++
 2 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/src/android/camera_device.cpp b/src/android/camera_device.cpp
index 765c3292e4f3..181fca83988d 100644
--- a/src/android/camera_device.cpp
+++ b/src/android/camera_device.cpp
@@ -314,6 +314,17 @@ std::vector<Size> CameraDevice::listProcessedResolutions(CameraConfiguration *ca
 	return supportedResolutions;
 }
 
+std::vector<Size> CameraDevice::listRawResolutions(const libcamera::PixelFormat &pixelFormat)
+{
+	std::unique_ptr<CameraConfiguration> cameraConfig =
+		camera_->generateConfiguration({ StillCaptureRaw });
+	StreamConfiguration &cfg = cameraConfig->at(0);
+	const StreamFormats &formats = cfg.formats();
+	std::vector<Size> supportedResolutions = formats.sizes(pixelFormat);
+
+	return supportedResolutions;
+}
+
 /*
  * Initialize the format conversion map to translate from Android format
  * identifier to libcamera pixel formats and fill in the list of supported
@@ -466,13 +477,15 @@ int CameraDevice::initializeStreamConfigurations()
 				<< camera3Format.name << " to: "
 				<< mappedFormat.toString();
 
+		std::vector<Size> resolutions;
 		const PixelFormatInfo &info = PixelFormatInfo::info(mappedFormat);
 		if (info.colourEncoding == PixelFormatInfo::ColourEncodingRAW)
-			continue;
+			resolutions = listRawResolutions(mappedFormat);
+		else
+			resolutions = listProcessedResolutions(cameraConfig.get(),
+							       mappedFormat,
+							       cameraResolutions);
 
-		std::vector<Size> resolutions = listProcessedResolutions(cameraConfig.get(),
-									 mappedFormat,
-									 cameraResolutions);
 		for (const Size &res : resolutions) {
 			streamConfigurations_.push_back({ res, androidFormat });
 
diff --git a/src/android/camera_device.h b/src/android/camera_device.h
index 18fd5ff03cde..230e89b011e6 100644
--- a/src/android/camera_device.h
+++ b/src/android/camera_device.h
@@ -97,6 +97,8 @@ private:
 	listProcessedResolutions(libcamera::CameraConfiguration *cameraConfig,
 				 const libcamera::PixelFormat &pixelFormat,
 				 const std::vector<libcamera::Size> &resolutions);
+	std::vector<libcamera::Size>
+	listRawResolutions(const libcamera::PixelFormat &pixelFormat);
 
 	std::tuple<uint32_t, uint32_t> calculateStaticMetadataSize();
 	libcamera::FrameBuffer *createFrameBuffer(const buffer_handle_t camera3buffer);
-- 
2.28.0