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-rw-r--r--src/libcamera/software_isp/swstats_cpu.cpp128
-rw-r--r--src/libcamera/software_isp/swstats_cpu.h9
2 files changed, 137 insertions, 0 deletions
diff --git a/src/libcamera/software_isp/swstats_cpu.cpp b/src/libcamera/software_isp/swstats_cpu.cpp
index 24ae0b16..a0c45b0c 100644
--- a/src/libcamera/software_isp/swstats_cpu.cpp
+++ b/src/libcamera/software_isp/swstats_cpu.cpp
@@ -164,6 +164,83 @@ static constexpr unsigned int kBlueYMul = 29; /* 0.114 * 256 */
stats_.sumG_ += sumG; \
stats_.sumB_ += sumB;
+void SwStatsCpu::statsBGGR8Line0(const uint8_t *src[])
+{
+ const uint8_t *src0 = src[1] + window_.x;
+ const uint8_t *src1 = src[2] + window_.x;
+
+ SWSTATS_START_LINE_STATS(uint8_t)
+
+ if (swapLines_)
+ std::swap(src0, src1);
+
+ /* x += 4 sample every other 2x2 block */
+ for (int x = 0; x < (int)window_.width; x += 4) {
+ b = src0[x];
+ g = src0[x + 1];
+ g2 = src1[x];
+ r = src1[x + 1];
+
+ g = (g + g2) / 2;
+
+ SWSTATS_ACCUMULATE_LINE_STATS(1)
+ }
+
+ SWSTATS_FINISH_LINE_STATS()
+}
+
+void SwStatsCpu::statsBGGR10Line0(const uint8_t *src[])
+{
+ const uint16_t *src0 = (const uint16_t *)src[1] + window_.x;
+ const uint16_t *src1 = (const uint16_t *)src[2] + window_.x;
+
+ SWSTATS_START_LINE_STATS(uint16_t)
+
+ if (swapLines_)
+ std::swap(src0, src1);
+
+ /* x += 4 sample every other 2x2 block */
+ for (int x = 0; x < (int)window_.width; x += 4) {
+ b = src0[x];
+ g = src0[x + 1];
+ g2 = src1[x];
+ r = src1[x + 1];
+
+ g = (g + g2) / 2;
+
+ /* divide Y by 4 for 10 -> 8 bpp value */
+ SWSTATS_ACCUMULATE_LINE_STATS(4)
+ }
+
+ SWSTATS_FINISH_LINE_STATS()
+}
+
+void SwStatsCpu::statsBGGR12Line0(const uint8_t *src[])
+{
+ const uint16_t *src0 = (const uint16_t *)src[1] + window_.x;
+ const uint16_t *src1 = (const uint16_t *)src[2] + window_.x;
+
+ SWSTATS_START_LINE_STATS(uint16_t)
+
+ if (swapLines_)
+ std::swap(src0, src1);
+
+ /* x += 4 sample every other 2x2 block */
+ for (int x = 0; x < (int)window_.width; x += 4) {
+ b = src0[x];
+ g = src0[x + 1];
+ g2 = src1[x];
+ r = src1[x + 1];
+
+ g = (g + g2) / 2;
+
+ /* divide Y by 16 for 12 -> 8 bpp value */
+ SWSTATS_ACCUMULATE_LINE_STATS(16)
+ }
+
+ SWSTATS_FINISH_LINE_STATS()
+}
+
void SwStatsCpu::statsBGGR10PLine0(const uint8_t *src[])
{
const uint8_t *src0 = src[1] + window_.x * 5 / 4;
@@ -244,6 +321,42 @@ void SwStatsCpu::finishFrame(void)
}
/**
+ * \brief Setup SwStatsCpu object for standard Bayer orders
+ * \param[in] order The Bayer order
+ *
+ * Check if order is a standard Bayer order and setup xShift_ and swapLines_
+ * so that a single BGGR stats function can be used for all 4 standard orders.
+ */
+int SwStatsCpu::setupStandardBayerOrder(BayerFormat::Order order)
+{
+ switch (order) {
+ case BayerFormat::BGGR:
+ xShift_ = 0;
+ swapLines_ = false;
+ break;
+ case BayerFormat::GBRG:
+ xShift_ = 1; /* BGGR -> GBRG */
+ swapLines_ = false;
+ break;
+ case BayerFormat::GRBG:
+ xShift_ = 0;
+ swapLines_ = true; /* BGGR -> GRBG */
+ break;
+ case BayerFormat::RGGB:
+ xShift_ = 1; /* BGGR -> GBRG */
+ swapLines_ = true; /* GBRG -> RGGB */
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ patternSize_.height = 2;
+ patternSize_.width = 2;
+ ySkipMask_ = 0x02; /* Skip every 3th and 4th line */
+ return 0;
+}
+
+/**
* \brief Configure the statistics object for the passed in input format
* \param[in] inputCfg The input format
*
@@ -254,6 +367,21 @@ int SwStatsCpu::configure(const StreamConfiguration &inputCfg)
BayerFormat bayerFormat =
BayerFormat::fromPixelFormat(inputCfg.pixelFormat);
+ if (bayerFormat.packing == BayerFormat::Packing::None &&
+ setupStandardBayerOrder(bayerFormat.order) == 0) {
+ switch (bayerFormat.bitDepth) {
+ case 8:
+ stats0_ = &SwStatsCpu::statsBGGR8Line0;
+ return 0;
+ case 10:
+ stats0_ = &SwStatsCpu::statsBGGR10Line0;
+ return 0;
+ case 12:
+ stats0_ = &SwStatsCpu::statsBGGR12Line0;
+ return 0;
+ }
+ }
+
if (bayerFormat.bitDepth == 10 &&
bayerFormat.packing == BayerFormat::Packing::CSI2) {
patternSize_.height = 2;
diff --git a/src/libcamera/software_isp/swstats_cpu.h b/src/libcamera/software_isp/swstats_cpu.h
index 27b15756..baec3951 100644
--- a/src/libcamera/software_isp/swstats_cpu.h
+++ b/src/libcamera/software_isp/swstats_cpu.h
@@ -17,6 +17,7 @@
#include <libcamera/geometry.h>
+#include "libcamera/internal/bayer_format.h"
#include "libcamera/internal/shared_mem_object.h"
#include "libcamera/internal/software_isp/swisp_stats.h"
@@ -65,6 +66,14 @@ public:
private:
using statsProcessFn = void (SwStatsCpu::*)(const uint8_t *src[]);
+ int setupStandardBayerOrder(BayerFormat::Order order);
+ /* Bayer 8 bpp unpacked */
+ void statsBGGR8Line0(const uint8_t *src[]);
+ /* Bayer 10 bpp unpacked */
+ void statsBGGR10Line0(const uint8_t *src[]);
+ /* Bayer 12 bpp unpacked */
+ void statsBGGR12Line0(const uint8_t *src[]);
+ /* Bayer 10 bpp packed */
void statsBGGR10PLine0(const uint8_t *src[]);
void statsGBRG10PLine0(const uint8_t *src[]);