shinano-common: camera: Enable sonycamera proprietary capabilities

Sony camera blobs are encrypted, so they need
com.sonyericsson.permission.CAMERA_EXTENDED permission from original
camera to be present in apk to enable Sony custom options (4k video,
iso settings, etc)

camera.qcom.so checks if this permission is available in current camera
app but it can be bypassed when "ro.build.type=eng" thus enabling Sony 
camera options. The point of this shim is to make camera.qcom.so believe
that we're currently on an engineering android rom so it bypasses the
permission check allowing camera apps to have full capabilities.

-----------------------------------------------------------------------
Credits to Balázs Triszka from sony-kitakami
Change-Id: I14ef800608c7ed7a95921dd71a56702ed2d68b18
-----------------------------------------------------------------------

Change-Id: I2052aa30fbd30a730ea7b9c60b98f35f99314a51

4 files changed, 27 insertions, 1 deletions

diff --git a/libshims/Android.mk b/libshims/Android.mk
index 88e307f..e4bfd9f 100644
--- a/libshims/Android.mk
+++ b/libshims/Android.mk
@@ -43,3 +43,11 @@ LOCAL_MODULE_TAGS := optional
 LOCAL_32_BIT_ONLY := true
 include $(BUILD_SHARED_LIBRARY)
 
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := libsonycamera.cpp
+LOCAL_MODULE := libsonycamera
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+LOCAL_SHARED_LIBRARIES := liblog
+LOCAL_32_BIT_ONLY := true
+include $(BUILD_SHARED_LIBRARY)
diff --git a/libshims/libsonycamera.cpp b/libshims/libsonycamera.cpp
new file mode 100644
index 0000000..8d759fe
--- /dev/null
+++ b/libshims/libsonycamera.cpp
@@ -0,0 +1,16 @@
+#include <cutils/log.h>
+#include <sys/types.h>
+#include <dlfcn.h>
+#include <string.h>
+
+// Unlock all Sony parameters
+extern "C" {
+  int property_get(const char * key, char * value, const char * default_value) {
+    if (strcmp("ro.build.type", key) == 0) {
+      strcpy(value, "eng");
+      return 3;
+    }
+
+    return ((int( * )(const char * , char *, const char * ))(dlsym((void * ) - 1, "property_get")))(key, value, default_value);
+  }
+}
\ No newline at end of file
diff --git a/rootdir/init.camera.rc b/rootdir/init.camera.rc
index 1549cd9..efb7b37 100644
--- a/rootdir/init.camera.rc
+++ b/rootdir/init.camera.rc
@@ -20,6 +20,7 @@ on init
 :/system/bin/credmgrd|libshims_signal.so \
 :/system/bin/iddd|libshims_idd.so \
 :/system/bin/suntrold|libshims_signal.so \
+:/system/lib/hw/camera.qcom.so|libsonycamera.so \
 :/system/vendor/lib/libwvm.so|libdtcpipplayer.so \
 "
 
diff --git a/shinano.mk b/shinano.mk
index 124d7cd..dc6f10c 100644
--- a/shinano.mk
+++ b/shinano.mk
@@ -53,7 +53,8 @@ PRODUCT_PACKAGES += \
 	wait4tad_static \
 	libshims_wvm \
 	libshims_signal \
-	libshims_idd
+	libshims_idd \
+        libsonycamera
 
 PRODUCT_COPY_FILES += \
     $(COMMON_PATH)/rootdir/system/bin/credmgrfirstboot.sh:system/bin/credmgrfirstboot.sh