drm_hwcomposer: Add wrapper for EDID parsing

Use libdisplay-info to parse display EDID. Wrap the parsing logic in a
class to extract specific EDID information.

Change-Id: I20376eb96ebcd0073155cedf1e8f055bbf8dfb49
Signed-off-by: Sasha McIntosh <sashamcintosh@google.com>
diff --git a/drm/DrmConnector.h b/drm/DrmConnector.h
index e49cee0..fc17206 100644
--- a/drm/DrmConnector.h
+++ b/drm/DrmConnector.h
@@ -27,11 +27,14 @@
 #include "DrmProperty.h"
 #include "DrmUnique.h"
 #include "compositor/DisplayInfo.h"
+#include "utils/EdidWrapper.h"
 
 namespace android {
 
 class DrmDevice;
 
+using EdidWrapperUnique = std::unique_ptr<EdidWrapper>;
+
 class DrmConnector : public PipelineBindable<DrmConnector> {
  public:
   static auto CreateInstance(DrmDevice &dev, uint32_t connector_id,
@@ -42,6 +45,9 @@
 
   int UpdateEdidProperty();
   auto GetEdidBlob() -> DrmModePropertyBlobUnique;
+  auto GetParsedEdid() -> EdidWrapperUnique & {
+    return edid_wrapper_;
+  }
 
   auto GetDev() const -> DrmDevice & {
     return *drm_;
@@ -152,6 +158,8 @@
     return GetConnectorProperty(prop_name, property, /*is_optional=*/true);
   }
 
+  EdidWrapperUnique edid_wrapper_;
+
   const uint32_t index_in_res_array_;
 
   std::vector<DrmMode> modes_;