libcamera: pipeline: rkisp1: Move path configuration generation and validation to RkISP1Path

Move the path configuration generation and validation to RkISP1Path.
This is done to increase code reuse and to encapsulate the main and self
path differences inside the RkISP1Path class. There is no functional
change.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

3 files changed, 119 insertions, 116 deletions

diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 857c9330..86a8fd4f 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -20,7 +20,6 @@
 #include <libcamera/formats.h>
 #include <libcamera/ipa/rkisp1.h>
 #include <libcamera/request.h>
-#include <libcamera/span.h>
 #include <libcamera/stream.h>
 
 #include "libcamera/internal/camera_sensor.h"
@@ -40,34 +39,6 @@ namespace libcamera {
 
 LOG_DEFINE_CATEGORY(RkISP1)
 
-namespace {
-constexpr Size RKISP1_RSZ_MP_SRC_MIN{ 32, 16 };
-constexpr Size RKISP1_RSZ_MP_SRC_MAX{ 4416, 3312 };
-constexpr std::array<PixelFormat, 7> RKISP1_RSZ_MP_FORMATS{
-	formats::YUYV,
-	formats::YVYU,
-	formats::VYUY,
-	formats::NV16,
-	formats::NV61,
-	formats::NV21,
-	formats::NV12,
-	/* \todo Add support for 8-bit greyscale to DRM formats */
-};
-
-constexpr Size RKISP1_RSZ_SP_SRC_MIN{ 32, 16 };
-constexpr Size RKISP1_RSZ_SP_SRC_MAX{ 1920, 1920 };
-constexpr std::array<PixelFormat, 7> RKISP1_RSZ_SP_FORMATS{
-	formats::YUYV,
-	formats::YVYU,
-	formats::VYUY,
-	formats::NV16,
-	formats::NV61,
-	formats::NV21,
-	formats::NV12,
-	/* \todo Add support for BGR888 and RGB565 */
-};
-} /* namespace */
-
 class PipelineHandlerRkISP1;
 class RkISP1ActionQueueBuffers;
 class RkISP1CameraData;
@@ -194,14 +165,6 @@ public:
 	const V4L2SubdeviceFormat &sensorFormat() { return sensorFormat_; }
 
 private:
-	static constexpr unsigned int RKISP1_BUFFER_COUNT = 4;
-
-	CameraConfiguration::Status validatePath(StreamConfiguration *cfg,
-						 const Span<const PixelFormat> &formats,
-						 const Size &min, const Size &max,
-						 V4L2VideoDevice *video);
-	CameraConfiguration::Status validateMainPath(StreamConfiguration *cfg);
-	CameraConfiguration::Status validateSelfPath(StreamConfiguration *cfg);
 	bool fitsAllPaths(const StreamConfiguration &cfg);
 
 	/*
@@ -514,64 +477,16 @@ RkISP1CameraConfiguration::RkISP1CameraConfiguration(Camera *camera,
 	data_ = data;
 }
 
-CameraConfiguration::Status RkISP1CameraConfiguration::validatePath(
-	StreamConfiguration *cfg, const Span<const PixelFormat> &formats,
-	const Size &min, const Size &max, V4L2VideoDevice *video)
-{
-	const StreamConfiguration reqCfg = *cfg;
-	Status status = Valid;
-
-	if (std::find(formats.begin(), formats.end(), cfg->pixelFormat) ==
-	    formats.end())
-		cfg->pixelFormat = formats::NV12;
-
-	cfg->size.boundTo(max);
-	cfg->size.expandTo(min);
-	cfg->bufferCount = RKISP1_BUFFER_COUNT;
-
-	V4L2DeviceFormat format = {};
-	format.fourcc = video->toV4L2PixelFormat(cfg->pixelFormat);
-	format.size = cfg->size;
-
-	int ret = video->tryFormat(&format);
-	if (ret)
-		return Invalid;
-
-	cfg->stride = format.planes[0].bpl;
-	cfg->frameSize = format.planes[0].size;
-
-	if (cfg->pixelFormat != reqCfg.pixelFormat || cfg->size != reqCfg.size) {
-		LOG(RkISP1, Debug)
-			<< "Adjusting format from " << reqCfg.toString()
-			<< " to " << cfg->toString();
-		status = Adjusted;
-	}
-
-	return status;
-}
-
-CameraConfiguration::Status RkISP1CameraConfiguration::validateMainPath(StreamConfiguration *cfg)
-{
-	return validatePath(cfg, RKISP1_RSZ_MP_FORMATS, RKISP1_RSZ_MP_SRC_MIN,
-			    RKISP1_RSZ_MP_SRC_MAX, data_->mainPath_->video_);
-}
-
-CameraConfiguration::Status RkISP1CameraConfiguration::validateSelfPath(StreamConfiguration *cfg)
-{
-	return validatePath(cfg, RKISP1_RSZ_SP_FORMATS, RKISP1_RSZ_SP_SRC_MIN,
-			    RKISP1_RSZ_SP_SRC_MAX, data_->selfPath_->video_);
-}
-
 bool RkISP1CameraConfiguration::fitsAllPaths(const StreamConfiguration &cfg)
 {
 	StreamConfiguration config;
 
 	config = cfg;
-	if (validateMainPath(&config) != Valid)
+	if (data_->mainPath_->validate(&config) != Valid)
 		return false;
 
 	config = cfg;
-	if (validateSelfPath(&config) != Valid)
+	if (data_->selfPath_->validate(&config) != Valid)
 		return false;
 
 	return true;
@@ -616,7 +531,7 @@ CameraConfiguration::Status RkISP1CameraConfiguration::validate()
 		/* Try to match stream without adjusting configuration. */
 		if (mainPathAvailable) {
 			StreamConfiguration tryCfg = cfg;
-			if (validateMainPath(&tryCfg) == Valid) {
+			if (data_->mainPath_->validate(&tryCfg) == Valid) {
 				mainPathAvailable = false;
 				cfg = tryCfg;
 				cfg.setStream(const_cast<Stream *>(&data_->mainPathStream_));
@@ -626,7 +541,7 @@ CameraConfiguration::Status RkISP1CameraConfiguration::validate()
 
 		if (selfPathAvailable) {
 			StreamConfiguration tryCfg = cfg;
-			if (validateSelfPath(&tryCfg) == Valid) {
+			if (data_->selfPath_->validate(&tryCfg) == Valid) {
 				selfPathAvailable = false;
 				cfg = tryCfg;
 				cfg.setStream(const_cast<Stream *>(&data_->selfPathStream_));
@@ -637,7 +552,7 @@ CameraConfiguration::Status RkISP1CameraConfiguration::validate()
 		/* Try to match stream allowing adjusting configuration. */
 		if (mainPathAvailable) {
 			StreamConfiguration tryCfg = cfg;
-			if (validateMainPath(&tryCfg) == Adjusted) {
+			if (data_->mainPath_->validate(&tryCfg) == Adjusted) {
 				mainPathAvailable = false;
 				cfg = tryCfg;
 				cfg.setStream(const_cast<Stream *>(&data_->mainPathStream_));
@@ -648,7 +563,7 @@ CameraConfiguration::Status RkISP1CameraConfiguration::validate()
 
 		if (selfPathAvailable) {
 			StreamConfiguration tryCfg = cfg;
-			if (validateSelfPath(&tryCfg) == Adjusted) {
+			if (data_->selfPath_->validate(&tryCfg) == Adjusted) {
 				selfPathAvailable = false;
 				cfg = tryCfg;
 				cfg.setStream(const_cast<Stream *>(&data_->selfPathStream_));
@@ -734,32 +649,17 @@ CameraConfiguration *PipelineHandlerRkISP1::generateConfiguration(Camera *camera
 			return nullptr;
 		}
 
-		std::map<PixelFormat, std::vector<SizeRange>> streamFormats;
-		Size maxResolution = data->sensor_->resolution();
+		StreamConfiguration cfg;
 		if (useMainPath) {
+			cfg = data->mainPath_->generateConfiguration(
+				data->sensor_->resolution());
 			mainPathAvailable = false;
-			maxResolution.boundTo(RKISP1_RSZ_MP_SRC_MAX);
-			for (const PixelFormat &format : RKISP1_RSZ_MP_FORMATS)
-				streamFormats[format] = { {
-					RKISP1_RSZ_MP_SRC_MIN,
-					maxResolution,
-				} };
 		} else {
+			cfg = data->selfPath_->generateConfiguration(
+				data->sensor_->resolution());
 			selfPathAvailable = false;
-			maxResolution.boundTo(RKISP1_RSZ_SP_SRC_MAX);
-			for (const PixelFormat &format : RKISP1_RSZ_SP_FORMATS)
-				streamFormats[format] = { {
-					RKISP1_RSZ_SP_SRC_MIN,
-					maxResolution,
-				} };
 		}
 
-		StreamFormats formats(streamFormats);
-		StreamConfiguration cfg(formats);
-		cfg.pixelFormat = formats::NV12;
-		cfg.size = maxResolution;
-		cfg.bufferCount = 4;
-
 		config->addConfiguration(cfg);
 	}
 
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
index 66b5eebd..96c18b35 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
@@ -7,6 +7,7 @@
 
 #include "rkisp1_path.h"
 
+#include <libcamera/formats.h>
 #include <libcamera/stream.h>
 
 #include "libcamera/internal/media_device.h"
@@ -17,8 +18,11 @@ namespace libcamera {
 
 LOG_DECLARE_CATEGORY(RkISP1)
 
-RkISP1Path::RkISP1Path(const char *name)
-	: video_(nullptr), name_(name), resizer_(nullptr)
+RkISP1Path::RkISP1Path(const char *name, const Span<const PixelFormat> &formats,
+		       const Size &minResolution, const Size &maxResolution)
+	: video_(nullptr), name_(name), formats_(formats),
+	  minResolution_(minResolution), maxResolution_(maxResolution),
+	  resizer_(nullptr)
 {
 }
 
@@ -44,6 +48,58 @@ bool RkISP1Path::init(MediaDevice *media)
 	return true;
 }
 
+StreamConfiguration RkISP1Path::generateConfiguration(const Size &resolution)
+{
+	Size maxResolution = resolution;
+	maxResolution.boundTo(maxResolution_);
+
+	std::map<PixelFormat, std::vector<SizeRange>> streamFormats;
+	for (const PixelFormat &format : formats_)
+		streamFormats[format] = { { minResolution_, maxResolution } };
+
+	StreamFormats formats(streamFormats);
+	StreamConfiguration cfg(formats);
+	cfg.pixelFormat = formats::NV12;
+	cfg.size = maxResolution;
+	cfg.bufferCount = RKISP1_BUFFER_COUNT;
+
+	return cfg;
+}
+
+CameraConfiguration::Status RkISP1Path::validate(StreamConfiguration *cfg)
+{
+	const StreamConfiguration reqCfg = *cfg;
+	CameraConfiguration::Status status = CameraConfiguration::Valid;
+
+	if (std::find(formats_.begin(), formats_.end(), cfg->pixelFormat) ==
+	    formats_.end())
+		cfg->pixelFormat = formats::NV12;
+
+	cfg->size.boundTo(maxResolution_);
+	cfg->size.expandTo(minResolution_);
+	cfg->bufferCount = RKISP1_BUFFER_COUNT;
+
+	V4L2DeviceFormat format = {};
+	format.fourcc = video_->toV4L2PixelFormat(cfg->pixelFormat);
+	format.size = cfg->size;
+
+	int ret = video_->tryFormat(&format);
+	if (ret)
+		return CameraConfiguration::Invalid;
+
+	cfg->stride = format.planes[0].bpl;
+	cfg->frameSize = format.planes[0].size;
+
+	if (cfg->pixelFormat != reqCfg.pixelFormat || cfg->size != reqCfg.size) {
+		LOG(RkISP1, Debug)
+			<< "Adjusting format from " << reqCfg.toString()
+			<< " to " << cfg->toString();
+		status = CameraConfiguration::Adjusted;
+	}
+
+	return status;
+}
+
 int RkISP1Path::configure(const StreamConfiguration &config,
 			  const V4L2SubdeviceFormat &inputFormat)
 {
@@ -93,13 +149,43 @@ int RkISP1Path::configure(const StreamConfiguration &config,
 	return 0;
 }
 
+namespace {
+constexpr Size RKISP1_RSZ_MP_SRC_MIN{ 32, 16 };
+constexpr Size RKISP1_RSZ_MP_SRC_MAX{ 4416, 3312 };
+constexpr std::array<PixelFormat, 7> RKISP1_RSZ_MP_FORMATS{
+	formats::YUYV,
+	formats::YVYU,
+	formats::VYUY,
+	formats::NV16,
+	formats::NV61,
+	formats::NV21,
+	formats::NV12,
+	/* \todo Add support for 8-bit greyscale to DRM formats */
+};
+
+constexpr Size RKISP1_RSZ_SP_SRC_MIN{ 32, 16 };
+constexpr Size RKISP1_RSZ_SP_SRC_MAX{ 1920, 1920 };
+constexpr std::array<PixelFormat, 7> RKISP1_RSZ_SP_FORMATS{
+	formats::YUYV,
+	formats::YVYU,
+	formats::VYUY,
+	formats::NV16,
+	formats::NV61,
+	formats::NV21,
+	formats::NV12,
+	/* \todo Add support for BGR888 and RGB565 */
+};
+} /* namespace */
+
 RkISP1MainPath::RkISP1MainPath()
-	: RkISP1Path("main")
+	: RkISP1Path("main", RKISP1_RSZ_MP_FORMATS,
+		     RKISP1_RSZ_MP_SRC_MIN, RKISP1_RSZ_MP_SRC_MAX)
 {
 }
 
 RkISP1SelfPath::RkISP1SelfPath()
-	: RkISP1Path("self")
+	: RkISP1Path("self", RKISP1_RSZ_SP_FORMATS,
+		     RKISP1_RSZ_SP_SRC_MIN, RKISP1_RSZ_SP_SRC_MAX)
 {
 }
 
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.h b/src/libcamera/pipeline/rkisp1/rkisp1_path.h
index 6eb01529..7433ad03 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1_path.h
+++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.h
@@ -7,6 +7,13 @@
 #ifndef __LIBCAMERA_PIPELINE_RKISP1_PATH_H__
 #define __LIBCAMERA_PIPELINE_RKISP1_PATH_H__
 
+#include <vector>
+
+#include <libcamera/camera.h>
+#include <libcamera/geometry.h>
+#include <libcamera/pixel_format.h>
+#include <libcamera/span.h>
+
 namespace libcamera {
 
 class MediaDevice;
@@ -18,11 +25,15 @@ struct V4L2SubdeviceFormat;
 class RkISP1Path
 {
 public:
-	RkISP1Path(const char *name);
+	RkISP1Path(const char *name, const Span<const PixelFormat> &formats,
+		   const Size &minResolution, const Size &maxResolution);
 	~RkISP1Path();
 
 	bool init(MediaDevice *media);
 
+	StreamConfiguration generateConfiguration(const Size &resolution);
+	CameraConfiguration::Status validate(StreamConfiguration *cfg);
+
 	int configure(const StreamConfiguration &config,
 		      const V4L2SubdeviceFormat &inputFormat);
 
@@ -30,8 +41,14 @@ public:
 	V4L2VideoDevice *video_;
 
 private:
+	static constexpr unsigned int RKISP1_BUFFER_COUNT = 4;
+
 	const char *name_;
 
+	const Span<const PixelFormat> formats_;
+	const Size minResolution_;
+	const Size maxResolution_;
+
 	V4L2Subdevice *resizer_;
 };