new file mode 100644
@@ -0,0 +1,53 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2026 Red Hat Inc.
+ *
+ * Autofocus
+ */
+
+#include "af.h"
+
+#include <libcamera/base/log.h>
+
+#include <libcamera/control_ids.h>
+
+#include "libcamera/internal/software_isp/swisp_stats.h"
+
+namespace libcamera {
+
+namespace ipa::softisp::algorithms {
+
+LOG_DEFINE_CATEGORY(IPASoftIspAf)
+
+int Af::init(IPAContext &context, [[maybe_unused]] const ValueNode &tuningData)
+{
+ /* Informs that lens controls can get focus data */
+ context.afEnabled = true;
+
+ return 0;
+}
+
+int Af::configure(IPAContext &context,
+ [[maybe_unused]] const IPAConfigInfo &configInfo)
+{
+ afAlgo_.configure(context.activeState.af);
+
+ return 0;
+}
+
+void Af::process(IPAContext &context,
+ [[maybe_unused]] const uint32_t frame,
+ [[maybe_unused]] IPAFrameContext &frameContext,
+ const SwIspStats *stats,
+ [[maybe_unused]] ControlList &metadata)
+{
+ const double variance = stats->variance;
+ LOG(IPASoftIspAf, Debug) << "Focus stats: " << variance;
+ afAlgo_.process(context.activeState.af, variance);
+}
+
+REGISTER_IPA_ALGORITHM(Af, "Af")
+
+} /* namespace ipa::softisp::algorithms */
+
+} /* namespace libcamera */
new file mode 100644
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2026 Red Hat Inc.
+ *
+ * Autofocus
+ */
+
+#pragma once
+
+#include "libipa/af.h"
+
+#include "algorithm.h"
+#include "ipa_context.h"
+
+namespace libcamera {
+
+namespace ipa::softisp::algorithms {
+
+class Af : public Algorithm
+{
+public:
+ Af() = default;
+ ~Af() = default;
+
+ int init(IPAContext &context, const ValueNode &tuningData) override;
+ int configure(IPAContext &context,
+ const IPAConfigInfo &configInfo) override;
+ void process(IPAContext &context, const uint32_t frame,
+ IPAFrameContext &frameContext,
+ const SwIspStats *stats,
+ ControlList &metadata) override;
+
+private:
+ AfAlgorithm afAlgo_;
+};
+
+} /* namespace ipa::softisp::algorithms */
+
+} /* namespace libcamera */
@@ -2,6 +2,7 @@
softisp_ipa_algorithms = files([
'adjust.cpp',
+ 'af.cpp',
'awb.cpp',
'agc.cpp',
'blc.cpp',
@@ -4,6 +4,7 @@
version: 1
algorithms:
- BlackLevel:
+ # - Af:
- Awb:
# Color correction matrices can be defined here. The CCM algorithm
# has a significant performance impact, and should only be enabled
@@ -20,6 +20,7 @@
#include <libipa/camera_sensor_helper.h>
#include <libipa/ccm.h>
#include <libipa/fc_queue.h>
+#include "libipa/af.h"
#include "libipa/lsc.h"
#include "core_ipa_interface.h"
@@ -39,6 +40,7 @@ struct IPAActiveState {
ipa::awb::ActiveState awb;
ipa::ccm::ActiveState ccm;
ipa::agc::ActiveState agc;
+ ipa::af::ActiveState af;
struct {
uint8_t level;
@@ -88,6 +90,7 @@ struct IPAContext {
FCQueue<IPAFrameContext> frameContexts;
ControlInfoMap::Map ctrlMap;
bool ccmEnabled = false;
+ bool afEnabled = false;
bool lscEnabled = false;
ipa::lsc::ActiveState lsc;
};
Let's add Af algorithm, which is mostly a proxy to the libipa Af. The only special feature is setting afEnabled flag to prevent attempting lens movements when the algorithm is not enabled. The algorithm is not enabled yet because there are no autofocus stats computed. Signed-off-by: Milan Zamazal <mzamazal@redhat.com> --- src/ipa/softisp/algorithms/af.cpp | 53 ++++++++++++++++++++++++++ src/ipa/softisp/algorithms/af.h | 39 +++++++++++++++++++ src/ipa/softisp/algorithms/meson.build | 1 + src/ipa/softisp/data/uncalibrated.yaml | 1 + src/ipa/softisp/ipa_context.h | 3 ++ 5 files changed, 97 insertions(+) create mode 100644 src/ipa/softisp/algorithms/af.cpp create mode 100644 src/ipa/softisp/algorithms/af.h