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-rw-r--r--src/ipa/ipu3/algorithms/awb.cpp13
-rw-r--r--src/ipa/ipu3/algorithms/awb.h7
-rw-r--r--src/ipa/ipu3/ipa_context.h1
-rw-r--r--src/ipa/ipu3/ipu3.cpp6
4 files changed, 16 insertions, 11 deletions
diff --git a/src/ipa/ipu3/algorithms/awb.cpp b/src/ipa/ipu3/algorithms/awb.cpp
index 2d875d0b..3cff9aa4 100644
--- a/src/ipa/ipu3/algorithms/awb.cpp
+++ b/src/ipa/ipu3/algorithms/awb.cpp
@@ -176,6 +176,7 @@ int Awb::configure(IPAContext &context,
[[maybe_unused]] const IPAConfigInfo &configInfo)
{
const ipu3_uapi_grid_config &grid = context.configuration.grid.bdsGrid;
+ stride_ = context.configuration.grid.stride;
cellsPerZoneX_ = std::round(grid.width / static_cast<double>(kAwbStatsSizeX));
cellsPerZoneY_ = std::round(grid.height / static_cast<double>(kAwbStatsSizeY));
@@ -238,8 +239,7 @@ void Awb::generateZones(std::vector<RGB> &zones)
}
/* Translate the IPU3 statistics into the default statistics zone array */
-void Awb::generateAwbStats(const ipu3_uapi_stats_3a *stats,
- const ipu3_uapi_grid_config &grid)
+void Awb::generateAwbStats(const ipu3_uapi_stats_3a *stats)
{
/*
* Generate a (kAwbStatsSizeX x kAwbStatsSizeY) array from the IPU3 grid which is
@@ -247,7 +247,7 @@ void Awb::generateAwbStats(const ipu3_uapi_stats_3a *stats,
*/
for (unsigned int cellY = 0; cellY < kAwbStatsSizeY * cellsPerZoneY_; cellY++) {
for (unsigned int cellX = 0; cellX < kAwbStatsSizeX * cellsPerZoneX_; cellX++) {
- uint32_t cellPosition = (cellY * grid.width + cellX)
+ uint32_t cellPosition = (cellY * stride_ + cellX)
* sizeof(Ipu3AwbCell);
uint32_t zoneX = cellX / cellsPerZoneX_;
uint32_t zoneY = cellY / cellsPerZoneY_;
@@ -322,13 +322,12 @@ void Awb::awbGreyWorld()
asyncResults_.blueGain = blueGain;
}
-void Awb::calculateWBGains(const ipu3_uapi_stats_3a *stats,
- const ipu3_uapi_grid_config &grid)
+void Awb::calculateWBGains(const ipu3_uapi_stats_3a *stats)
{
ASSERT(stats->stats_3a_status.awb_en);
zones_.clear();
clearAwbStats();
- generateAwbStats(stats, grid);
+ generateAwbStats(stats);
generateZones(zones_);
LOG(IPU3Awb, Debug) << "Valid zones: " << zones_.size();
if (zones_.size() > 10) {
@@ -340,7 +339,7 @@ void Awb::calculateWBGains(const ipu3_uapi_stats_3a *stats,
void Awb::process(IPAContext &context, const ipu3_uapi_stats_3a *stats)
{
- calculateWBGains(stats, context.configuration.grid.bdsGrid);
+ calculateWBGains(stats);
/*
* Gains are only recalculated if enough zones were detected.
diff --git a/src/ipa/ipu3/algorithms/awb.h b/src/ipa/ipu3/algorithms/awb.h
index 681d8c2b..b3e0ad82 100644
--- a/src/ipa/ipu3/algorithms/awb.h
+++ b/src/ipa/ipu3/algorithms/awb.h
@@ -74,11 +74,9 @@ public:
};
private:
- void calculateWBGains(const ipu3_uapi_stats_3a *stats,
- const ipu3_uapi_grid_config &grid);
+ void calculateWBGains(const ipu3_uapi_stats_3a *stats);
void generateZones(std::vector<RGB> &zones);
- void generateAwbStats(const ipu3_uapi_stats_3a *stats,
- const ipu3_uapi_grid_config &grid);
+ void generateAwbStats(const ipu3_uapi_stats_3a *stats);
void clearAwbStats();
void awbGreyWorld();
uint32_t estimateCCT(double red, double green, double blue);
@@ -87,6 +85,7 @@ private:
Accumulator awbStats_[kAwbStatsSizeX * kAwbStatsSizeY];
AwbStatus asyncResults_;
+ uint32_t stride_;
uint32_t cellsPerZoneX_;
uint32_t cellsPerZoneY_;
uint32_t cellsPerZoneThreshold_;
diff --git a/src/ipa/ipu3/ipa_context.h b/src/ipa/ipu3/ipa_context.h
index 9d9444dc..5bab684c 100644
--- a/src/ipa/ipu3/ipa_context.h
+++ b/src/ipa/ipu3/ipa_context.h
@@ -20,6 +20,7 @@ struct IPASessionConfiguration {
struct {
ipu3_uapi_grid_config bdsGrid;
Size bdsOutputSize;
+ uint32_t stride;
} grid;
};
diff --git a/src/ipa/ipu3/ipu3.cpp b/src/ipa/ipu3/ipu3.cpp
index 757a5d50..06f53fbe 100644
--- a/src/ipa/ipu3/ipu3.cpp
+++ b/src/ipa/ipu3/ipu3.cpp
@@ -91,6 +91,9 @@
*
* \var IPASessionConfiguration::grid::bdsOutputSize
* \brief BDS output size configured by the pipeline handler
+ *
+ * \var IPASessionConfiguration::grid::stride
+ * \brief Number of cells on one line including the ImgU padding
*/
/**
@@ -352,6 +355,9 @@ void IPAIPU3::calculateBdsGrid(const Size &bdsOutputSize)
bdsGrid.height = best.height >> bestLog2.height;
bdsGrid.block_height_log2 = bestLog2.height;
+ /* The ImgU pads the lines to a multiple of 4 cells. */
+ context_.configuration.grid.stride = utils::alignUp(bdsGrid.width, 4);
+
LOG(IPAIPU3, Debug) << "Best grid found is: ("
<< (int)bdsGrid.width << " << " << (int)bdsGrid.block_width_log2 << ") x ("
<< (int)bdsGrid.height << " << " << (int)bdsGrid.block_height_log2 << ")";
generated by cgit v1.2.1 (git 2.18.0) at 2025-02-17 22:03:39 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * Thread support
 */

#include <libcamera/base/thread.h>

#include <atomic>
#include <list>
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>

#include <libcamera/base/event_dispatcher.h>
#include <libcamera/base/event_dispatcher_poll.h>
#include <libcamera/base/log.h>
#include <libcamera/base/message.h>
#include <libcamera/base/mutex.h>
#include <libcamera/base/object.h>

/**
 * \page thread Thread Support
 *
 * libcamera supports multi-threaded applications through a threading model that
 * sets precise rules to guarantee thread-safe usage of the API. Additionally,
 * libcamera makes internal use of threads, and offers APIs that simplify
 * interactions with application threads. Careful compliance with the threading
 * model will ensure avoidance of race conditions.
 *
 * Every thread created by libcamera is associated with an instance of the
 * Thread class. Those threads run an internal event loop by default to
 * dispatch events to objects. Additionally, the main thread of the application
 * (defined as the thread that calls CameraManager::start()) is also associated
 * with a Thread instance, but has no event loop accessible to libcamera. Other
 * application threads are not visible to libcamera.
 *
 * \section thread-objects Threads and Objects
 *
 * Instances of the Object class and all its derived classes are thread-aware
 * and are bound to the thread they are created in. They are said to *live* in
 * a thread, and they interact with the event loop of their thread for the
 * purpose of message passing and signal delivery. Messages posted to the
 * object with Object::postMessage() will be delivered from the event loop of