Android: Use JNI for getting post-processsing shaders

The Java implementation of getting the list of post-processing
shaders only looked in the Sys folder and not the User folder.
This could be fixed in the Java implementation, but it's
simpler to just call the C++ implementation instead.

Source/Android/jni/AndroidCommon/AndroidCommon.cpp

@@ -44,7 +44,7 @@ std::vector<std::string> JStringArrayToVector(JNIEnv* env, jobjectArray array)
   return result;
 }
 
-jobjectArray JStringArrayFromVector(JNIEnv* env, std::vector<std::string> vector)
+jobjectArray VectorToJStringArray(JNIEnv* env, std::vector<std::string> vector)
 {
   jobjectArray result = env->NewObjectArray(vector.size(), IDCache::GetStringClass(), nullptr);
   for (jsize i = 0; i < vector.size(); ++i)
@@ -145,7 +145,7 @@ std::vector<std::string> DoFileSearchAndroidContent(const std::string& directory
   JNIEnv* env = IDCache::GetEnvForThread();
   jobject result = env->CallStaticObjectMethod(
       IDCache::GetContentHandlerClass(), IDCache::GetContentHandlerDoFileSearch(),
-      ToJString(env, directory), JStringArrayFromVector(env, extensions), recursive);
+      ToJString(env, directory), VectorToJStringArray(env, extensions), recursive);
   return JStringArrayToVector(env, reinterpret_cast<jobjectArray>(result));
 }
 

Source/Android/jni/AndroidCommon/AndroidCommon.h

@@ -12,7 +12,9 @@
 
 std::string GetJString(JNIEnv* env, jstring jstr);
 jstring ToJString(JNIEnv* env, const std::string& str);
+
 std::vector<std::string> JStringArrayToVector(JNIEnv* env, jobjectArray array);
+jobjectArray VectorToJStringArray(JNIEnv* env, std::vector<std::string> vector);
 
 // Returns true if the given path should be opened as Android content instead of a normal file.
 bool IsPathAndroidContent(const std::string& uri);

Source/Android/jni/CMakeLists.txt

@@ -1,10 +1,11 @@
 add_library(main SHARED
+  Config/NativeConfig.cpp
+  Config/PostProcessing.cpp
   GameList/GameFile.cpp
   GameList/GameFile.h
   GameList/GameFileCache.cpp
   IniFile.cpp
   MainAndroid.cpp
-  NativeConfig.cpp
   WiiUtils.cpp
 )
 

Source/Android/jni/Config/PostProcessing.cpp

@@ -0,0 +1,35 @@
+// Copyright 2021 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <string>
+#include <vector>
+
+#include <jni.h>
+
+#include "VideoCommon/PostProcessing.cpp"
+#include "jni/AndroidCommon/AndroidCommon.h"
+
+extern "C" {
+
+JNIEXPORT jobjectArray JNICALL
+Java_org_dolphinemu_dolphinemu_features_settings_model_PostProcessing_getShaderList(JNIEnv* env,
+                                                                                    jclass)
+{
+  return VectorToJStringArray(env, VideoCommon::PostProcessing::GetShaderList());
+}
+
+JNIEXPORT jobjectArray JNICALL
+Java_org_dolphinemu_dolphinemu_features_settings_model_PostProcessing_getAnaglyphShaderList(
+    JNIEnv* env, jclass)
+{
+  return VectorToJStringArray(env, VideoCommon::PostProcessing::GetAnaglyphShaderList());
+}
+
+JNIEXPORT jobjectArray JNICALL
+Java_org_dolphinemu_dolphinemu_features_settings_model_PostProcessing_getPassiveShaderList(
+    JNIEnv* env, jclass)
+{
+  return VectorToJStringArray(env, VideoCommon::PostProcessing::GetPassiveShaderList());
+}
+}