[PATCH v2 5/9] libcamera: software_isp: Use a macro to assign debayering methods

[Milan Zamazal]

Assignments of the debayering methods to be used is a repetitive pattern
that can be (arguably) better expressed by using a macro.  This removes
some duplication and also makes easier to introduce more complex
assignment patterns.  This will be useful once color correction matrix
support is added.

Signed-off-by: Milan Zamazal <mzamazal at redhat.com>
---
 src/libcamera/software_isp/debayer_cpu.cpp | 25 ++++++++++------------
 1 file changed, 11 insertions(+), 14 deletions(-)

diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp
index 4a21ef361..7d080f00f 100644
--- a/src/libcamera/software_isp/debayer_cpu.cpp
+++ b/src/libcamera/software_isp/debayer_cpu.cpp
@@ -367,6 +367,10 @@ int DebayerCpu::setupStandardBayerOrder(BayerFormat::Order order)
 	return 0;
 }
 
+#define SET_DEBAYER_METHODS(method0, method1)                                                \
+	debayer0_ = addAlphaByte ? &DebayerCpu::method0<true> : &DebayerCpu::method0<false>; \
+	debayer1_ = addAlphaByte ? &DebayerCpu::method1<true> : &DebayerCpu::method1<false>;
+
 int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, PixelFormat outputFormat)
 {
 	BayerFormat bayerFormat =
@@ -422,16 +426,13 @@ int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, PixelFormat outputF
 	    isStandardBayerOrder(bayerFormat.order)) {
 		switch (bayerFormat.bitDepth) {
 		case 8:
-			debayer0_ = addAlphaByte ? &DebayerCpu::debayer8_BGBG_BGR888<true> : &DebayerCpu::debayer8_BGBG_BGR888<false>;
-			debayer1_ = addAlphaByte ? &DebayerCpu::debayer8_GRGR_BGR888<true> : &DebayerCpu::debayer8_GRGR_BGR888<false>;
+			SET_DEBAYER_METHODS(debayer8_BGBG_BGR888, debayer8_GRGR_BGR888)
 			break;
 		case 10:
-			debayer0_ = addAlphaByte ? &DebayerCpu::debayer10_BGBG_BGR888<true> : &DebayerCpu::debayer10_BGBG_BGR888<false>;
-			debayer1_ = addAlphaByte ? &DebayerCpu::debayer10_GRGR_BGR888<true> : &DebayerCpu::debayer10_GRGR_BGR888<false>;
+			SET_DEBAYER_METHODS(debayer10_BGBG_BGR888, debayer10_GRGR_BGR888)
 			break;
 		case 12:
-			debayer0_ = addAlphaByte ? &DebayerCpu::debayer12_BGBG_BGR888<true> : &DebayerCpu::debayer12_BGBG_BGR888<false>;
-			debayer1_ = addAlphaByte ? &DebayerCpu::debayer12_GRGR_BGR888<true> : &DebayerCpu::debayer12_GRGR_BGR888<false>;
+			SET_DEBAYER_METHODS(debayer12_BGBG_BGR888, debayer12_GRGR_BGR888)
 			break;
 		}
 		setupStandardBayerOrder(bayerFormat.order);
@@ -442,20 +443,16 @@ int DebayerCpu::setDebayerFunctions(PixelFormat inputFormat, PixelFormat outputF
 	    bayerFormat.packing == BayerFormat::Packing::CSI2) {
 		switch (bayerFormat.order) {
 		case BayerFormat::BGGR:
-			debayer0_ = addAlphaByte ? &DebayerCpu::debayer10P_BGBG_BGR888<true> : &DebayerCpu::debayer10P_BGBG_BGR888<false>;
-			debayer1_ = addAlphaByte ? &DebayerCpu::debayer10P_GRGR_BGR888<true> : &DebayerCpu::debayer10P_GRGR_BGR888<false>;
+			SET_DEBAYER_METHODS(debayer10P_BGBG_BGR888, debayer10P_GRGR_BGR888)
 			return 0;
 		case BayerFormat::GBRG:
-			debayer0_ = addAlphaByte ? &DebayerCpu::debayer10P_GBGB_BGR888<true> : &DebayerCpu::debayer10P_GBGB_BGR888<false>;
-			debayer1_ = addAlphaByte ? &DebayerCpu::debayer10P_RGRG_BGR888<true> : &DebayerCpu::debayer10P_RGRG_BGR888<false>;
+			SET_DEBAYER_METHODS(debayer10P_GBGB_BGR888, debayer10P_RGRG_BGR888)
 			return 0;
 		case BayerFormat::GRBG:
-			debayer0_ = addAlphaByte ? &DebayerCpu::debayer10P_GRGR_BGR888<true> : &DebayerCpu::debayer10P_GRGR_BGR888<false>;
-			debayer1_ = addAlphaByte ? &DebayerCpu::debayer10P_BGBG_BGR888<true> : &DebayerCpu::debayer10P_BGBG_BGR888<false>;
+			SET_DEBAYER_METHODS(debayer10P_GRGR_BGR888, debayer10P_BGBG_BGR888)
 			return 0;
 		case BayerFormat::RGGB:
-			debayer0_ = addAlphaByte ? &DebayerCpu::debayer10P_RGRG_BGR888<true> : &DebayerCpu::debayer10P_RGRG_BGR888<false>;
-			debayer1_ = addAlphaByte ? &DebayerCpu::debayer10P_GBGB_BGR888<true> : &DebayerCpu::debayer10P_GBGB_BGR888<false>;
+			SET_DEBAYER_METHODS(debayer10P_RGRG_BGR888, debayer10P_GBGB_BGR888)
 			return 0;
 		default:
 			break;
-- 
2.44.2