[PATCH hwc v2 10/18] drm_hwcomposer: hwcutils: Add function for cloning a DrmHwcLayer

[Alexandru Gheorghe]

When doing flattening of a composition on a different CRTC we need to be
able to clone a layer in order to import it and then pass it to another CRTC.

Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe at arm.com>
---
 drmhwcomposer.h |  1 +
 hwcutils.cpp    | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/drmhwcomposer.h b/drmhwcomposer.h
index f8440fb..b256caf 100644
--- a/drmhwcomposer.h
+++ b/drmhwcomposer.h
@@ -150,6 +150,7 @@ struct DrmHwcLayer {
 
   int InitFromHwcLayer(hwc_layer_1_t *sf_layer, Importer *importer,
                        const gralloc_module_t *gralloc);
+  int PopulateFromDrmHwcLayer(DrmHwcLayer *layer);
   int ImportBuffer(Importer *importer, const gralloc_module_t *gralloc);
 
   void SetTransform(int32_t sf_transform);
diff --git a/hwcutils.cpp b/hwcutils.cpp
index 53a7d82..ff37c3b 100644
--- a/hwcutils.cpp
+++ b/hwcutils.cpp
@@ -149,6 +149,17 @@ int DrmHwcLayer::InitFromHwcLayer(hwc_layer_1_t *sf_layer, Importer *importer,
   return ImportBuffer(importer, gralloc);
 }
 
+int DrmHwcLayer::PopulateFromDrmHwcLayer(DrmHwcLayer *src_layer) {
+  blending = src_layer->blending;
+  sf_handle = src_layer->sf_handle;
+  acquire_fence = dup(src_layer->acquire_fence.get());
+  display_frame = src_layer->display_frame;
+  alpha = src_layer->alpha;
+  source_crop = src_layer->source_crop;
+  transform = src_layer->transform;
+  return 0;
+}
+
 int DrmHwcLayer::ImportBuffer(Importer *importer,
                               const gralloc_module_t *gralloc) {
   int ret = buffer.ImportBuffer(sf_handle, importer);
-- 
2.7.4