diff --git a/cmds/idmap2/Android.bp b/cmds/idmap2/Android.bp
index 55ec7da..6e51f00 100644
--- a/cmds/idmap2/Android.bp
+++ b/cmds/idmap2/Android.bp
@@ -86,6 +86,7 @@
             static_libs: [
                 "libidmap2_policies",
                 "libidmap2_protos",
+                "libpng",
             ],
             shared_libs: [
                 "libandroidfw",
@@ -107,6 +108,7 @@
                 "libcutils",
                 "libidmap2_policies",
                 "libidmap2_protos",
+                "libpng",
                 "libprotobuf-cpp-lite",
                 "libutils",
                 "libz",
@@ -185,6 +187,7 @@
     static_libs: [
         "libgmock",
         "libidmap2_protos",
+        "libpng",
     ],
     target: {
         android: {
@@ -258,6 +261,7 @@
                 "libbase",
                 "libcutils",
                 "libidmap2",
+                "libpng",
                 "libprotobuf-cpp-lite",
                 "libutils",
                 "libz",
@@ -275,6 +279,7 @@
                 "libidmap2",
                 "libidmap2_policies",
                 "liblog",
+                "libpng",
                 "libprotobuf-cpp-lite",
                 "libutils",
                 "libziparchive",
diff --git a/cmds/idmap2/idmap2d/Idmap2Service.cpp b/cmds/idmap2/idmap2d/Idmap2Service.cpp
index d76ca5b..f264125 100644
--- a/cmds/idmap2/idmap2d/Idmap2Service.cpp
+++ b/cmds/idmap2/idmap2d/Idmap2Service.cpp
@@ -266,7 +266,8 @@
     } else if (res.binaryData.has_value()) {
       builder.SetResourceValue(res.resourceName, res.binaryData->get(),
                                res.binaryDataOffset, res.binaryDataSize,
-                               res.configuration.value_or(std::string()));
+                               res.configuration.value_or(std::string()),
+                               res.isNinePatch);
     } else {
       builder.SetResourceValue(res.resourceName, res.dataType, res.data,
             res.configuration.value_or(std::string()));
diff --git a/cmds/idmap2/idmap2d/aidl/core/android/os/FabricatedOverlayInternalEntry.aidl b/cmds/idmap2/idmap2d/aidl/core/android/os/FabricatedOverlayInternalEntry.aidl
index 8ebd454..bca2ff3 100644
--- a/cmds/idmap2/idmap2d/aidl/core/android/os/FabricatedOverlayInternalEntry.aidl
+++ b/cmds/idmap2/idmap2d/aidl/core/android/os/FabricatedOverlayInternalEntry.aidl
@@ -28,4 +28,5 @@
     @nullable @utf8InCpp String configuration;
     long binaryDataOffset;
     long binaryDataSize;
+    boolean isNinePatch;
 }
\ No newline at end of file
diff --git a/cmds/idmap2/include/idmap2/FabricatedOverlay.h b/cmds/idmap2/include/idmap2/FabricatedOverlay.h
index 1e7d4c2..bfcd4b9 100644
--- a/cmds/idmap2/include/idmap2/FabricatedOverlay.h
+++ b/cmds/idmap2/include/idmap2/FabricatedOverlay.h
@@ -19,6 +19,8 @@
 
 #include <libidmap2/proto/fabricated_v1.pb.h>
 
+#include "androidfw/Streams.h"
+
 #include <istream>
 #include <map>
 #include <memory>
@@ -51,7 +53,8 @@
                               std::optional<android::base::borrowed_fd>&& binary_value,
                               off64_t data_binary_offset,
                               size_t data_binary_size,
-                              const std::string& configuration);
+                              const std::string& configuration,
+                              bool nine_patch);
 
     inline Builder& setFrroPath(std::string frro_path) {
       frro_path_ = std::move(frro_path);
@@ -70,6 +73,7 @@
       off64_t data_binary_offset;
       size_t data_binary_size;
       std::string configuration;
+      bool nine_patch;
     };
 
     std::string package_name_;
@@ -81,7 +85,7 @@
   };
 
   struct BinaryData {
-    android::base::borrowed_fd file_descriptor;
+    std::unique_ptr<android::InputStream> input_stream;
     off64_t offset;
     size_t size;
   };
diff --git a/cmds/idmap2/include/idmap2/ResourceUtils.h b/cmds/idmap2/include/idmap2/ResourceUtils.h
index d4490ef4..9e463c9 100644
--- a/cmds/idmap2/include/idmap2/ResourceUtils.h
+++ b/cmds/idmap2/include/idmap2/ResourceUtils.h
@@ -45,6 +45,7 @@
   std::optional<android::base::borrowed_fd> data_binary_value;
   off64_t data_binary_offset;
   size_t data_binary_size;
+  bool nine_patch;
 };
 
 struct TargetValueWithConfig {
diff --git a/cmds/idmap2/libidmap2/FabricatedOverlay.cpp b/cmds/idmap2/libidmap2/FabricatedOverlay.cpp
index 47daf23..16bb896 100644
--- a/cmds/idmap2/libidmap2/FabricatedOverlay.cpp
+++ b/cmds/idmap2/libidmap2/FabricatedOverlay.cpp
@@ -20,8 +20,16 @@
 #include <sys/types.h>  // umask
 
 #include <android-base/file.h>
+#include <android-base/strings.h>
+#include <androidfw/BigBuffer.h>
+#include <androidfw/BigBufferStream.h>
+#include <androidfw/FileStream.h>
+#include <androidfw/Image.h>
+#include <androidfw/Png.h>
 #include <androidfw/ResourceUtils.h>
+#include <androidfw/StringPiece.h>
 #include <androidfw/StringPool.h>
+#include <androidfw/Streams.h>
 #include <google/protobuf/io/coded_stream.h>
 #include <google/protobuf/io/zero_copy_stream_impl.h>
 #include <utils/ByteOrder.h>
@@ -32,9 +40,9 @@
 #include <memory>
 #include <string>
 #include <utility>
+#include <sys/utsname.h>
 
 namespace android::idmap2 {
-
 constexpr auto kBufferSize = 1024;
 
 namespace {
@@ -81,7 +89,7 @@
     const std::string& resource_name, uint8_t data_type, uint32_t data_value,
     const std::string& configuration) {
   entries_.emplace_back(
-      Entry{resource_name, data_type, data_value, "", std::nullopt, 0, 0, configuration});
+      Entry{resource_name, data_type, data_value, "", std::nullopt, 0, 0, configuration, false});
   return *this;
 }
 
@@ -89,18 +97,90 @@
     const std::string& resource_name, uint8_t data_type, const std::string& data_string_value,
     const std::string& configuration) {
   entries_.emplace_back(
-      Entry{resource_name, data_type, 0, data_string_value, std::nullopt, 0, 0, configuration});
+      Entry{resource_name,
+            data_type,
+            0,
+            data_string_value,
+            std::nullopt,
+            0,
+            0,
+            configuration,
+            false});
   return *this;
 }
 
 FabricatedOverlay::Builder& FabricatedOverlay::Builder::SetResourceValue(
     const std::string& resource_name, std::optional<android::base::borrowed_fd>&& binary_value,
-    off64_t data_binary_offset, size_t data_binary_size, const std::string& configuration) {
+    off64_t data_binary_offset, size_t data_binary_size, const std::string& configuration,
+    bool nine_patch) {
   entries_.emplace_back(Entry{resource_name, 0, 0, "", binary_value,
-                              data_binary_offset, data_binary_size, configuration});
+                              data_binary_offset, data_binary_size, configuration, nine_patch});
   return *this;
 }
 
+static Result<FabricatedOverlay::BinaryData> buildBinaryData(
+        pb::ResourceValue* pb_value, const TargetValue &value) {
+  pb_value->set_data_type(Res_value::TYPE_STRING);
+  size_t binary_size;
+  off64_t binary_offset;
+  std::unique_ptr<android::InputStream> binary_stream;
+
+  if (value.nine_patch) {
+    std::string file_contents;
+    file_contents.resize(value.data_binary_size);
+    if (!base::ReadFullyAtOffset(value.data_binary_value->get(), file_contents.data(),
+                                 value.data_binary_size, value.data_binary_offset)) {
+      return Error("Failed to read binary file data.");
+    }
+    const StringPiece content(file_contents.c_str(), file_contents.size());
+    android::PngChunkFilter png_chunk_filter(content);
+    android::AndroidLogDiagnostics diag;
+    auto png = android::ReadPng(&png_chunk_filter, &diag);
+    if (!png) {
+      return Error("Error opening file as png");
+    }
+
+    std::string err;
+    std::unique_ptr<NinePatch> nine_patch = NinePatch::Create(png->rows.get(),
+                                                              png->width, png->height,
+                                                              &err);
+    if (!nine_patch) {
+      return Error("%s", err.c_str());
+    }
+
+    png->width -= 2;
+    png->height -= 2;
+    memmove(png->rows.get(), png->rows.get() + 1, png->height * sizeof(uint8_t**));
+    for (int32_t h = 0; h < png->height; h++) {
+      memmove(png->rows[h], png->rows[h] + 4, png->width * 4);
+    }
+
+    android::BigBuffer buffer(value.data_binary_size);
+    android::BigBufferOutputStream buffer_output_stream(&buffer);
+    if (!android::WritePng(png.get(), nine_patch.get(), &buffer_output_stream, {},
+                           &diag, false)) {
+      return Error("Error writing frro png");
+    }
+
+    binary_size = buffer.size();
+    binary_offset = 0;
+    android::BigBufferInputStream *buffer_input_stream
+            = new android::BigBufferInputStream(std::move(buffer));
+    binary_stream.reset(buffer_input_stream);
+  } else {
+    binary_size = value.data_binary_size;
+    binary_offset = value.data_binary_offset;
+    android::FileInputStream *fis
+            = new android::FileInputStream(value.data_binary_value.value());
+    binary_stream.reset(fis);
+  }
+
+  return FabricatedOverlay::BinaryData{
+          std::move(binary_stream),
+          binary_offset,
+          binary_size};
+}
+
 Result<FabricatedOverlay> FabricatedOverlay::Builder::Build() {
   using ConfigMap = std::map<std::string, TargetValue, std::less<>>;
   using EntryMap = std::map<std::string, ConfigMap, std::less<>>;
@@ -150,7 +230,8 @@
 
     value->second = TargetValue{res_entry.data_type, res_entry.data_value,
                                 res_entry.data_string_value, res_entry.data_binary_value,
-                                res_entry.data_binary_offset, res_entry.data_binary_size};
+                                res_entry.data_binary_offset, res_entry.data_binary_size,
+                                res_entry.nine_patch};
   }
 
   pb::FabricatedOverlay overlay_pb;
@@ -183,18 +264,20 @@
             auto ref = string_pool.MakeRef(value.second.data_string_value);
             pb_value->set_data_value(ref.index());
           } else if (value.second.data_binary_value.has_value()) {
-              pb_value->set_data_type(Res_value::TYPE_STRING);
-              std::string uri
-                  = StringPrintf("frro:/%s?offset=%d&size=%d", frro_path_.c_str(),
-                                 static_cast<int> (FRRO_HEADER_SIZE + total_binary_bytes),
-                                 static_cast<int> (value.second.data_binary_size));
-              total_binary_bytes += value.second.data_binary_size;
-              binary_files.emplace_back(FabricatedOverlay::BinaryData{
-                  value.second.data_binary_value->get(),
-                  value.second.data_binary_offset,
-                  value.second.data_binary_size});
-              auto ref = string_pool.MakeRef(std::move(uri));
-              pb_value->set_data_value(ref.index());
+            auto binary_data = buildBinaryData(pb_value, value.second);
+            if (!binary_data) {
+              return binary_data.GetError();
+            }
+            pb_value->set_data_type(Res_value::TYPE_STRING);
+
+            std::string uri
+                = StringPrintf("frro:/%s?offset=%d&size=%d", frro_path_.c_str(),
+                               static_cast<int> (FRRO_HEADER_SIZE + total_binary_bytes),
+                               static_cast<int> (binary_data->size));
+            total_binary_bytes += binary_data->size;
+            binary_files.emplace_back(std::move(*binary_data));
+            auto ref = string_pool.MakeRef(std::move(uri));
+            pb_value->set_data_value(ref.index());
           } else {
             pb_value->set_data_value(value.second.data_value);
           }
@@ -311,9 +394,9 @@
   Write32(stream, (*data)->pb_crc);
   Write32(stream, total_binary_bytes_);
   std::string file_contents;
-  for (const FabricatedOverlay::BinaryData fd : binary_files_) {
-    file_contents.resize(fd.size);
-    if (!ReadFullyAtOffset(fd.file_descriptor, file_contents.data(), fd.size, fd.offset)) {
+  for (const FabricatedOverlay::BinaryData& bd : binary_files_) {
+    file_contents.resize(bd.size);
+    if (!bd.input_stream->ReadFullyAtOffset(file_contents.data(), bd.size, bd.offset)) {
       return Error("Failed to read binary file data.");
     }
     stream.write(file_contents.data(), file_contents.length());
diff --git a/cmds/idmap2/self_targeting/SelfTargeting.cpp b/cmds/idmap2/self_targeting/SelfTargeting.cpp
index c7f5cf3..7f9c468 100644
--- a/cmds/idmap2/self_targeting/SelfTargeting.cpp
+++ b/cmds/idmap2/self_targeting/SelfTargeting.cpp
@@ -53,7 +53,7 @@
         if (entry_params.data_binary_value.has_value()) {
             builder.SetResourceValue(entry_params.resource_name, *entry_params.data_binary_value,
                                      entry_params.binary_data_offset, entry_params.binary_data_size,
-                                     entry_params.configuration);
+                                     entry_params.configuration, entry_params.nine_patch);
         } else  if (dataType >= Res_value::TYPE_FIRST_INT && dataType <= Res_value::TYPE_LAST_INT) {
            builder.SetResourceValue(entry_params.resource_name, dataType,
                                     entry_params.data_value, entry_params.configuration);
diff --git a/cmds/idmap2/tests/FabricatedOverlayTests.cpp b/cmds/idmap2/tests/FabricatedOverlayTests.cpp
index b460bb3..6b1c7e8 100644
--- a/cmds/idmap2/tests/FabricatedOverlayTests.cpp
+++ b/cmds/idmap2/tests/FabricatedOverlayTests.cpp
@@ -59,7 +59,7 @@
               Res_value::TYPE_STRING,
               "foobar",
               "en-rUS-normal-xxhdpi-v21")
-          .SetResourceValue("com.example.target:drawable/dr1", fd, 0, 8341, "port-xxhdpi-v7")
+          .SetResourceValue("com.example.target:drawable/dr1", fd, 0, 8341, "port-xxhdpi-v7", false)
           .setFrroPath("/foo/bar/biz.frro")
           .Build();
   ASSERT_TRUE(overlay);
diff --git a/cmds/idmap2/tests/IdmapTests.cpp b/cmds/idmap2/tests/IdmapTests.cpp
index a3448fd..a384305 100644
--- a/cmds/idmap2/tests/IdmapTests.cpp
+++ b/cmds/idmap2/tests/IdmapTests.cpp
@@ -269,7 +269,7 @@
                   .SetResourceValue("integer/int1", Res_value::TYPE_INT_DEC, 2U, "land-xxhdpi-v7")
                   .SetResourceValue("string/str1", Res_value::TYPE_REFERENCE, 0x7f010000, "land")
                   .SetResourceValue("string/str2", Res_value::TYPE_STRING, "foobar", "xxhdpi-v7")
-                  .SetResourceValue("drawable/dr1", fd, 0, 8341, "port-xxhdpi-v7")
+                  .SetResourceValue("drawable/dr1", fd, 0, 8341, "port-xxhdpi-v7", false)
                   .setFrroPath("/foo/bar/biz.frro")
                   .Build();
 
diff --git a/cmds/idmap2/tests/ResourceMappingTests.cpp b/cmds/idmap2/tests/ResourceMappingTests.cpp
index 40f98c2..db44c23 100644
--- a/cmds/idmap2/tests/ResourceMappingTests.cpp
+++ b/cmds/idmap2/tests/ResourceMappingTests.cpp
@@ -212,7 +212,7 @@
                   .SetResourceValue("integer/int1", Res_value::TYPE_INT_DEC, 2U, "")
                   .SetResourceValue("string/str1", Res_value::TYPE_REFERENCE, 0x7f010000, "")
                   .SetResourceValue("string/str2", Res_value::TYPE_STRING, "foobar", "")
-                  .SetResourceValue("drawable/dr1", fd, 0, 8341, "")
+                  .SetResourceValue("drawable/dr1", fd, 0, 8341, "", false)
                   .setFrroPath("/foo/bar/biz.frro")
                   .Build();