Add SCP support for Android files

SCP uses the JNI headers in generated code, so several targets need
the include path; this will have no effect on non-SCP builds.  Also,
in "protected" builds, there is a generated library that needs to be
linked in the final binary, but this doesn't exist in the "analysis"
step; we create an empty static library if it doesn't exist so it works
on all cases.

Merged from https://widevine-internal-review.googlesource.com/169850

Merged from https://widevine-internal-review.googlesource.com/176177

Bug: 262635528
Change-Id: Ib676d55efbcbec81de9c3123bc70afb570d6caa5
(cherry picked from commit b9482eb23c261788a4432de7566f1b1de1cf9379)

libwvdrmengine/Android.bp

@@ -220,6 +220,7 @@ cc_library_static {
     ],
 
     header_libs: [
+        "jni_headers",
         "libbase_headers",
         "libutils_headers",
     ],
@@ -252,6 +253,82 @@ filegroup {
     ],
 }
 
+genrule {
+    name: "libscp_runtime_genrule_x86",
+
+    srcs: [
+        "copy_scp_runtime.sh",
+    ],
+    out: [
+        "libscp_runtime_x86.a",
+    ],
+    cmd: "$(in) libscp_runtime_x86.a $(out)",
+}
+
+genrule {
+    name: "libscp_runtime_genrule_x64",
+
+    srcs: [
+        "copy_scp_runtime.sh",
+    ],
+    out: [
+        "libscp_runtime_x64.a",
+    ],
+    cmd: "$(in) libscp_runtime_x86_64.a $(out)",
+}
+
+genrule {
+    name: "libscp_runtime_genrule_arm",
+
+    srcs: [
+        "copy_scp_runtime.sh",
+    ],
+    out: [
+        "libscp_runtime_arm.a",
+    ],
+    cmd: "$(in) libscp_runtime_armeabi-v7a.a $(out)",
+}
+
+genrule {
+    name: "libscp_runtime_genrule_arm64",
+
+    srcs: [
+        "copy_scp_runtime.sh",
+    ],
+    out: [
+        "libscp_runtime_arm64.a",
+    ],
+    cmd: "$(in) libscp_runtime_arm64-v8a.a $(out)",
+}
+
+cc_prebuilt_library_static {
+    name: "libscp_runtime",
+
+    vendor_available: true,
+    arch: {
+        x86: {
+            srcs: [
+                ":libscp_runtime_genrule_x86",
+            ],
+        },
+        x86_64: {
+            srcs: [
+                ":libscp_runtime_genrule_x64",
+            ],
+        },
+        arm: {
+            srcs: [
+                ":libscp_runtime_genrule_arm",
+            ],
+        },
+        arm64: {
+            srcs: [
+                ":libscp_runtime_genrule_arm64",
+            ],
+        },
+    },
+}
+
 // ----------------------------------------------------------------------------
 // Builds libwvaidl.so
 //
@@ -293,6 +370,7 @@ cc_library {
         "libprotobuf-cpp-lite",
         "libutils",
         "libwv_odk",
+        "libscp_runtime",
         "libwvdrmcryptoplugin_aidl",
         "libwvdrmdrmplugin_aidl",
         "libwvlevel3",
@@ -309,7 +387,10 @@ cc_library {
         "wv_media_drm_flags_c_lib",
     ],
 
-    header_libs: ["libstagefright_foundation_headers"],
+    header_libs: [
+        "jni_headers",
+        "libstagefright_foundation_headers",
+    ],
 
     owner: "widevine",
 

libwvdrmengine/cdm/Android.bp

@@ -38,7 +38,10 @@ cc_library_static {
         "external/protobuf/src",
     ],
 
-    header_libs: ["libutils_headers"],
+    header_libs: [
+        "jni_headers",
+        "libutils_headers",
+    ],
 
     static_libs: ["libcdm_protos"],
     shared_libs: ["libcrypto"],

libwvdrmengine/copy_scp_runtime.sh

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# During the protection step, there will be a "libscp_runtime*.a" file in the
+# root directory; link it to a different folder so it can  be loaded with
+# cc_prebuilt_library_static.  During the analysis step, it doesn't exist, so
+# create a placeholder archive.
+
+if [[ ! -e $1 ]]; then
+  printf '!<arch>\n' >"$1"
+fi
+cp "$1" "$2"

libwvdrmengine/level3/Android.bp

@@ -44,6 +44,9 @@ cc_library_static {
         "vendor/widevine/libwvdrmengine/oemcrypto/odk/include",
         "vendor/widevine/libwvdrmengine/oemcrypto/odk/src",
     ],
+    header_libs: [
+        "jni_headers",
+    ],
 
     srcs: [
         "src/generate_entropy_android.cpp",