write c2pa metadata to a temp file which is copied back over the orig…

…inal
guardianproject · Nov 8, 2023 · 9be0f73 · 9be0f73
1 parent af966f2
commit 9be0f73
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Showing 2 changed files with 39 additions and 20 deletions.
diff --git a/android-libproofcam/src/main/java/org/witness/proofmode/camera/c2pa/C2paUtils.kt b/android-libproofcam/src/main/java/org/witness/proofmode/camera/c2pa/C2paUtils.kt
@@ -4,10 +4,12 @@ import android.content.Context
 import android.database.Cursor
 import android.net.Uri
 import android.provider.MediaStore
-import android.util.Log
-import okhttp3.internal.ignoreIoExceptions
-import java.io.File
 import org.proofmode.c2pa.C2paJNI
+import java.io.File
+import java.io.FileInputStream
+import java.io.FileOutputStream
+import java.io.IOException
+
 
 class C2paUtils {
 
@@ -49,27 +51,43 @@ class C2paUtils {
                 filePath = _uri!!.path
             }
 
-            var fileMedia = File(filePath)
-            var fileOut = File(_context.filesDir, "c2pa-" + fileMedia.name);
-
-            if (fileMedia.exists()) {
-                //TODO add c2pa capture here
-                var identityId = _identityName
-                var identityUri = _identityUri
-
-                addContentCredentials(
-                    _context,
-                    identityId,
-                    identityUri,
-                    isDirectCapture,
-                    allowMachineLearning,
-                    fileMedia,
-                    fileOut
-                )
+            if (filePath?.isNotEmpty() == true) {
+                var fileMedia = File(filePath)
+                var fileOut = File(_context.cacheDir, fileMedia.name);
+
+                if (fileMedia.exists()) {
+                    //TODO add c2pa capture here
+                    var identityId = _identityName
+                    var identityUri = _identityUri
+
+                    addContentCredentials(
+                        _context,
+                        identityId,
+                        identityUri,
+                        isDirectCapture,
+                        allowMachineLearning,
+                        fileMedia,
+                        fileOut
+                    )
+
+                    copy(fileOut, fileMedia)
+                    fileOut.delete()
+                }
             }
 
         }
 
+        @Throws(IOException::class)
+        fun copy(src: File?, dst: File?) {
+            val inStream = FileInputStream(src)
+            val outStream = FileOutputStream(dst)
+            val inChannel = inStream.channel
+            val outChannel = outStream.channel
+            inChannel.transferTo(0, inChannel.size(), outChannel)
+            inStream.close()
+            outStream.close()
+        }
+
         fun   addContentCredentials (_context: Context, _uri: Uri?, isDirectCapture: Boolean, allowMachineLearning: Boolean, fileOutDir: File) {
 
             var filePath: String? = null

diff --git a/android-libproofcam/src/main/java/org/witness/proofmode/camera/fragments/CameraFragment.kt b/android-libproofcam/src/main/java/org/witness/proofmode/camera/fragments/CameraFragment.kt
@@ -417,6 +417,7 @@ class CameraFragment : BaseFragment<FragmentCameraBinding>(R.layout.fragment_cam
                 .setTargetRotation(rotation) // set the capture rotation
                 .build()
 
+
             checkForHdrExtensionAvailability()
 
             // The Configuration of image analyzing