NdkMediaCodec: implement createInputSurface

Expose createInputSurface() via NDK-mediaCodec to enable native
encoder apps to record from an input surface.

Bug: 32746065
Change-Id: I654f2c0deadb336d492cdd6ba290e09c8996ce40
diff --git a/media/ndk/NdkMediaCodec.cpp b/media/ndk/NdkMediaCodec.cpp
index 22c90e2..ecbdc2e 100644
--- a/media/ndk/NdkMediaCodec.cpp
+++ b/media/ndk/NdkMediaCodec.cpp
@@ -34,6 +34,7 @@
 #include <media/stagefright/MediaCodec.h>
 #include <media/stagefright/MediaErrors.h>
 #include <media/MediaCodecBuffer.h>
+#include <android/native_window.h>
 
 using namespace android;
 
@@ -377,6 +378,24 @@
     return translate_error(mData->mCodec->setSurface(surface));
 }
 
+EXPORT
+media_status_t AMediaCodec_createInputSurface(AMediaCodec *mData, ANativeWindow **surface) {
+    if (surface == NULL || mData == NULL) {
+        return AMEDIA_ERROR_INVALID_PARAMETER;
+    }
+    *surface = NULL;
+
+    sp<IGraphicBufferProducer> igbp = NULL;
+    status_t err = mData->mCodec->createInputSurface(&igbp);
+    if (err != NO_ERROR) {
+        return translate_error(err);
+    }
+
+    *surface = new Surface(igbp);
+    ANativeWindow_acquire(*surface);
+    return AMEDIA_OK;
+}
+
 //EXPORT
 media_status_t AMediaCodec_setNotificationCallback(AMediaCodec *mData, OnCodecEvent callback,
         void *userdata) {