gralloc: Allow devices to opt-in for YCrCb camera video encode

DeviceAsWebcam is using USAGE_VIDEO_ENCODE [1] for buffers and
this results in combined usage: (VIDEO_ENCODER | CAMERA_OUTPUT).

On some Qcom devices (verified on pyxis (sdm710)) and maybe others
DeviceAsWebcam has red & blue colors swapped with HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS.

When using HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS the output from
DeviceAsWebcam has correct colors.

[1] https://android.googlesource.com/platform/packages/services/DeviceAsWebcam/+/d079a82ba4f773210c01d488d2dfa1d4d25be8e2

Change-Id: I4376102e2b0eeaefed536eff29c315a71e469b57

Android.bp

@@ -11,6 +11,7 @@ soong_config_module_type {
         "var3",
         "llvmcov",
         "panel_dimension_extra_precision",
+        "use_ycrcb_camera_encode",
     ],
     properties: [
         "cflags",
@@ -112,6 +113,9 @@ qtidisplay_cc_defaults {
         panel_dimension_extra_precision: {
             cflags: ["-DTARGET_PANEL_DIMENSION_HAS_EXTRA_PRECISION"],
         },
+        use_ycrcb_camera_encode: {
+            cflags: ["-DTARGET_USE_YCRCB_CAMERA_ENCODE"],
+        },
     },
 }
 

config/display-product.mk

@@ -168,6 +168,7 @@ SOONG_CONFIG_qtidisplay_var2 := false
 SOONG_CONFIG_qtidisplay_var3 := false
 SOONG_CONFIG_qtidisplay_llvmcov := false
 SOONG_CONFIG_qtidisplay_panel_dimension_extra_precision := false
+SOONG_CONFIG_qtidisplay_use_ycrcb_camera_encode := false
 
 ifeq ($(call is-vendor-board-platform,QCOM),true)
     SOONG_CONFIG_qtidisplay_displayconfig_enabled := true
@@ -177,6 +178,10 @@ ifeq ($(TARGET_PANEL_DIMENSION_HAS_EXTRA_PRECISION), true)
     SOONG_CONFIG_qtidisplay_panel_dimension_extra_precision := true
 endif
 
+ifeq ($(TARGET_USE_YCRCB_CAMERA_ENCODE), true)
+    SOONG_CONFIG_qtidisplay_use_ycrcb_camera_encode := true
+endif
+
 # Techpack values
 
 ifeq ($(TARGET_IS_HEADLESS), true)

gralloc/gr_utils.cpp

@@ -1545,7 +1545,15 @@ int GetImplDefinedFormat(uint64_t usage, int format) {
       } else if (usage & GRALLOC_USAGE_PRIVATE_HEIF) {
         gr_format = HAL_PIXEL_FORMAT_NV12_HEIF;
       } else if (format == static_cast<int>(PixelFormat::YCBCR_420_888)) {
-        gr_format = HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS;
+#ifdef TARGET_USE_YCRCB_CAMERA_ENCODE
+        if (usage & BufferUsage::CAMERA_OUTPUT) {
+          gr_format = HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS;
+        } else {
+          gr_format = HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS;
+        }
+#else
+       gr_format = HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS;
+#endif
       } else {
         gr_format = HAL_PIXEL_FORMAT_NV12_ENCODEABLE;  // NV12
       }