[android] SurfaceView compatible snapshot api

[android] #5587 - snapshot API on surface view, create Bitmap with a ByteBuffer

[android] #5587 - write bitmap to external storage

PreMultipliedImage approach

callback implemented

clean up code

introduce bitmap reuse

cleanup

renaming surfaceContent to bitmap

1 files changed, 11 insertions, 1 deletions

diff --git a/platform/android/src/jni.cpp b/platform/android/src/jni.cpp
index 5fc29f4c29..5907a0ff9d 100755
--- a/platform/android/src/jni.cpp
+++ b/platform/android/src/jni.cpp
@@ -45,6 +45,7 @@ std::string androidRelease;
 jni::jmethodID* onInvalidateId = nullptr;
 jni::jmethodID* onMapChangedId = nullptr;
 jni::jmethodID* onFpsChangedId = nullptr;
+jni::jmethodID* onSnapshotReadyId = nullptr;
 
 jni::jclass* latLngClass = nullptr;
 jni::jmethodID* latLngConstructorId = nullptr;
@@ -1172,6 +1173,13 @@ void nativeRemoveSource(JNIEnv *env, jni::jobject* obj, jlong nativeMapViewPtr,
     }
 }
 
+void nativeScheduleTakeSnapshot(JNIEnv *env, jni::jobject* obj, jlong nativeMapViewPtr) {
+    mbgl::Log::Error(mbgl::Event::JNI, "nativeRenderToOffscreen");
+    assert(nativeMapViewPtr != 0);
+    NativeMapView *nativeMapView = reinterpret_cast<NativeMapView *>(nativeMapViewPtr);
+    nativeMapView->scheduleTakeSnapshot();
+}
+
 // Offline calls begin
 
 jlong createDefaultFileSource(JNIEnv *env, jni::jobject* obj, jni::jstring* cachePath_, jni::jstring* assetRoot_, jlong maximumCacheSize) {
@@ -1706,6 +1714,7 @@ extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *reserved) {
     onInvalidateId = &jni::GetMethodID(env, nativeMapViewClass, "onInvalidate", "()V");
     onMapChangedId = &jni::GetMethodID(env, nativeMapViewClass, "onMapChanged", "(I)V");
     onFpsChangedId = &jni::GetMethodID(env, nativeMapViewClass, "onFpsChanged", "(D)V");
+    onSnapshotReadyId = &jni::GetMethodID(env, nativeMapViewClass, "onSnapshotReady","([B)V");
 
     #define MAKE_NATIVE_METHOD(name, sig) jni::MakeNativeMethod<decltype(name), name>( #name, sig )
 
@@ -1786,7 +1795,8 @@ extern "C" JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *reserved) {
         MAKE_NATIVE_METHOD(nativeRemoveLayer, "(JLjava/lang/String;)V"),
         MAKE_NATIVE_METHOD(nativeAddSource, "(JLjava/lang/String;Lcom/mapbox/mapboxsdk/style/sources/Source;)V"),
         MAKE_NATIVE_METHOD(nativeRemoveSource, "(JLjava/lang/String;)V"),
-        MAKE_NATIVE_METHOD(nativeSetContentPadding, "(JDDDD)V")
+        MAKE_NATIVE_METHOD(nativeSetContentPadding, "(JDDDD)V"),
+        MAKE_NATIVE_METHOD(nativeScheduleTakeSnapshot, "(J)V")
     );
 
     // Offline begin