ipa: raspberrypi: Warn when control algorithms are missing; do not fail

Users are free to avoid loading certain control algorithms from the
json tuning file if they wish, and this could mean that some libcamera
controls will therefore not be available. Currently we don't have a
good means of indicating which these are, therefore failing completely
when an application tries to use one is unhelpful - it is better just
to issue a warning.

Note that once we can indicate this properly, applications should
check for supported controls as this change may be reverted.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

2 files changed, 81 insertions, 15 deletions

diff --git a/include/libcamera/ipa/raspberrypi.h b/include/libcamera/ipa/raspberrypi.h
index 5a943382..3500f7df 100644
--- a/include/libcamera/ipa/raspberrypi.h
+++ b/include/libcamera/ipa/raspberrypi.h
@@ -49,7 +49,15 @@ enum BufferMask {
 /* Size of the LS grid allocation. */
 static constexpr unsigned int MaxLsGridSize = 32 << 10;
 
-/* List of controls handled by the Raspberry Pi IPA */
+/*
+ * List of controls handled by the Raspberry Pi IPA
+ *
+ * \todo This list will need to be built dynamically from the control
+ * algorithms loaded by the json file, once this is supported. At that
+ * point applications should check first whether a control is supported,
+ * and the pipeline handler may be reverted so that it aborts when an
+ * unsupported control is encountered.
+ */
 static const ControlInfoMap Controls = {
 	{ &controls::AeEnable, ControlInfo(false, true) },
 	{ &controls::ExposureTime, ControlInfo(0, 999999) },
diff --git a/src/ipa/raspberrypi/raspberrypi.cpp b/src/ipa/raspberrypi/raspberrypi.cpp
index 681ab921..8048bb26 100644
--- a/src/ipa/raspberrypi/raspberrypi.cpp
+++ b/src/ipa/raspberrypi/raspberrypi.cpp
@@ -627,7 +627,12 @@ void IPARPi::queueRequest(const ControlList &controls)
 		switch (ctrl.first) {
 		case controls::AE_ENABLE: {
 			RPiController::Algorithm *agc = controller_.GetAlgorithm("agc");
-			ASSERT(agc);
+			if (!agc) {
+				LOG(IPARPI, Warning)
+					<< "Could not set AE_ENABLE - no AGC algorithm";
+				break;
+			}
+
 			if (ctrl.second.get<bool>() == false)
 				agc->Pause();
 			else
@@ -640,7 +645,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::EXPOSURE_TIME: {
 			RPiController::AgcAlgorithm *agc = dynamic_cast<RPiController::AgcAlgorithm *>(
 				controller_.GetAlgorithm("agc"));
-			ASSERT(agc);
+			if (!agc) {
+				LOG(IPARPI, Warning)
+					<< "Could not set EXPOSURE_TIME - no AGC algorithm";
+				break;
+			}
 
 			/* This expects units of micro-seconds. */
 			agc->SetFixedShutter(ctrl.second.get<int32_t>());
@@ -652,7 +661,12 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::ANALOGUE_GAIN: {
 			RPiController::AgcAlgorithm *agc = dynamic_cast<RPiController::AgcAlgorithm *>(
 				controller_.GetAlgorithm("agc"));
-			ASSERT(agc);
+			if (!agc) {
+				LOG(IPARPI, Warning)
+					<< "Could not set ANALOGUE_GAIN - no AGC algorithm";
+				break;
+			}
+
 			agc->SetFixedAnalogueGain(ctrl.second.get<float>());
 
 			libcameraMetadata_.set(controls::AnalogueGain,
@@ -663,7 +677,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::AE_METERING_MODE: {
 			RPiController::AgcAlgorithm *agc = dynamic_cast<RPiController::AgcAlgorithm *>(
 				controller_.GetAlgorithm("agc"));
-			ASSERT(agc);
+			if (!agc) {
+				LOG(IPARPI, Warning)
+					<< "Could not set AE_METERING_MODE - no AGC algorithm";
+				break;
+			}
 
 			int32_t idx = ctrl.second.get<int32_t>();
 			if (MeteringModeTable.count(idx)) {
@@ -679,7 +697,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::AE_CONSTRAINT_MODE: {
 			RPiController::AgcAlgorithm *agc = dynamic_cast<RPiController::AgcAlgorithm *>(
 				controller_.GetAlgorithm("agc"));
-			ASSERT(agc);
+			if (!agc) {
+				LOG(IPARPI, Warning)
+					<< "Could not set AE_CONSTRAINT_MODE - no AGC algorithm";
+				break;
+			}
 
 			int32_t idx = ctrl.second.get<int32_t>();
 			if (ConstraintModeTable.count(idx)) {
@@ -695,7 +717,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::AE_EXPOSURE_MODE: {
 			RPiController::AgcAlgorithm *agc = dynamic_cast<RPiController::AgcAlgorithm *>(
 				controller_.GetAlgorithm("agc"));
-			ASSERT(agc);
+			if (!agc) {
+				LOG(IPARPI, Warning)
+					<< "Could not set AE_EXPOSURE_MODE - no AGC algorithm";
+				break;
+			}
 
 			int32_t idx = ctrl.second.get<int32_t>();
 			if (ExposureModeTable.count(idx)) {
@@ -711,7 +737,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::EXPOSURE_VALUE: {
 			RPiController::AgcAlgorithm *agc = dynamic_cast<RPiController::AgcAlgorithm *>(
 				controller_.GetAlgorithm("agc"));
-			ASSERT(agc);
+			if (!agc) {
+				LOG(IPARPI, Warning)
+					<< "Could not set EXPOSURE_VALUE - no AGC algorithm";
+				break;
+			}
 
 			/*
 			 * The SetEv() method takes in a direct exposure multiplier.
@@ -726,7 +756,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 
 		case controls::AWB_ENABLE: {
 			RPiController::Algorithm *awb = controller_.GetAlgorithm("awb");
-			ASSERT(awb);
+			if (!awb) {
+				LOG(IPARPI, Warning)
+					<< "Could not set AWB_ENABLE - no AWB algorithm";
+				break;
+			}
 
 			if (ctrl.second.get<bool>() == false)
 				awb->Pause();
@@ -741,7 +775,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::AWB_MODE: {
 			RPiController::AwbAlgorithm *awb = dynamic_cast<RPiController::AwbAlgorithm *>(
 				controller_.GetAlgorithm("awb"));
-			ASSERT(awb);
+			if (!awb) {
+				LOG(IPARPI, Warning)
+					<< "Could not set AWB_MODE - no AWB algorithm";
+				break;
+			}
 
 			int32_t idx = ctrl.second.get<int32_t>();
 			if (AwbModeTable.count(idx)) {
@@ -758,7 +796,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 			auto gains = ctrl.second.get<Span<const float>>();
 			RPiController::AwbAlgorithm *awb = dynamic_cast<RPiController::AwbAlgorithm *>(
 				controller_.GetAlgorithm("awb"));
-			ASSERT(awb);
+			if (!awb) {
+				LOG(IPARPI, Warning)
+					<< "Could not set COLOUR_GAINS - no AWB algorithm";
+				break;
+			}
 
 			awb->SetManualGains(gains[0], gains[1]);
 			if (gains[0] != 0.0f && gains[1] != 0.0f)
@@ -771,7 +813,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::BRIGHTNESS: {
 			RPiController::ContrastAlgorithm *contrast = dynamic_cast<RPiController::ContrastAlgorithm *>(
 				controller_.GetAlgorithm("contrast"));
-			ASSERT(contrast);
+			if (!contrast) {
+				LOG(IPARPI, Warning)
+					<< "Could not set BRIGHTNESS - no contrast algorithm";
+				break;
+			}
 
 			contrast->SetBrightness(ctrl.second.get<float>() * 65536);
 			libcameraMetadata_.set(controls::Brightness,
@@ -782,7 +828,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::CONTRAST: {
 			RPiController::ContrastAlgorithm *contrast = dynamic_cast<RPiController::ContrastAlgorithm *>(
 				controller_.GetAlgorithm("contrast"));
-			ASSERT(contrast);
+			if (!contrast) {
+				LOG(IPARPI, Warning)
+					<< "Could not set CONTRAST - no contrast algorithm";
+				break;
+			}
 
 			contrast->SetContrast(ctrl.second.get<float>());
 			libcameraMetadata_.set(controls::Contrast,
@@ -793,7 +843,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::SATURATION: {
 			RPiController::CcmAlgorithm *ccm = dynamic_cast<RPiController::CcmAlgorithm *>(
 				controller_.GetAlgorithm("ccm"));
-			ASSERT(ccm);
+			if (!ccm) {
+				LOG(IPARPI, Warning)
+					<< "Could not set SATURATION - no ccm algorithm";
+				break;
+			}
 
 			ccm->SetSaturation(ctrl.second.get<float>());
 			libcameraMetadata_.set(controls::Saturation,
@@ -804,7 +858,11 @@ void IPARPi::queueRequest(const ControlList &controls)
 		case controls::SHARPNESS: {
 			RPiController::SharpenAlgorithm *sharpen = dynamic_cast<RPiController::SharpenAlgorithm *>(
 				controller_.GetAlgorithm("sharpen"));
-			ASSERT(sharpen);
+			if (!sharpen) {
+				LOG(IPARPI, Warning)
+					<< "Could not set SHARPNESS - no sharpen algorithm";
+				break;
+			}
 
 			sharpen->SetStrength(ctrl.second.get<float>());
 			libcameraMetadata_.set(controls::Sharpness,