Update NDK methods for HARDWARE Bitmaps

Bug: 135133301
Test: I2c1e58c41e49c72fb4bdbc64989da103885d34bf

_getInfo now sets a bit in AndroidBitmapInfo.flags to indicate whether
the Bitmap has Config.HARDWARE.

For a HARDWARE Bitmap, its AHardwareBuffer can now be retrieved with
AndroidBitmap_getHardwareBuffer. Call AHardwareBuffer_acquire on the
buffer so it will not be deleted while the client is using it.

Change-Id: I9240c1928c1478053ecf7c252443a33dbd6fd6db

native/graphics/jni/bitmap.cpp

@@ -76,6 +76,21 @@ int AndroidBitmap_unlockPixels(JNIEnv* env, jobject jbitmap) {
     return ANDROID_BITMAP_RESULT_SUCCESS;
 }
 
+int AndroidBitmap_getHardwareBuffer(JNIEnv* env, jobject jbitmap, AHardwareBuffer** outBuffer) {
+    if (NULL == env || NULL == jbitmap || NULL == outBuffer) {
+        return ANDROID_BITMAP_RESULT_BAD_PARAMETER;
+    }
+
+    android::graphics::Bitmap bitmap(env, jbitmap);
+
+    if (!bitmap.isValid()) {
+        return ANDROID_BITMAP_RESULT_JNI_EXCEPTION;
+    }
+
+    *outBuffer = bitmap.getHardwareBuffer();
+    return *outBuffer == NULL ? ANDROID_BITMAP_RESULT_BAD_PARAMETER : ANDROID_BITMAP_RESULT_SUCCESS;
+}
+
 int AndroidBitmap_compress(const AndroidBitmapInfo* info,
                            int32_t dataSpace,
                            const void* pixels,

native/graphics/jni/libjnigraphics.map.txt

@@ -22,6 +22,7 @@ LIBJNIGRAPHICS {
     AndroidBitmap_lockPixels;
     AndroidBitmap_unlockPixels;
     AndroidBitmap_compress; # introduced=30
+    AndroidBitmap_getHardwareBuffer; #introduced=30
   local:
     *;
 };