diff --git a/include/tts/TtsEngine.h b/include/tts/TtsEngine.h
index ca50a5e..21cb73b 100644
--- a/include/tts/TtsEngine.h
+++ b/include/tts/TtsEngine.h
@@ -133,16 +133,26 @@
     // @return TTS_SUCCESS, or TTS_FAILURE
     virtual tts_result setLanguage(const char *lang, const char *country, const char *variant);
 
-    // Retrieve the currently set language, or an empty "value" if no language
-    // has been set.
-    // @param[out]   value pointer to the retrieved language value
-    // @param[inout] iosize in: stores the size available to store the language
-    //                         value in *value
-    //                      out: stores the size required to hold the language
-    //                         value if  getLanguage() returned
-    //                         TTS_PROPERTY_SIZE_TOO_SMALL, unchanged otherwise.
-    // @return TTS_SUCCESS, or TTS_PROPERTY_SIZE_TOO_SMALL, or TTS_FAILURE
-    virtual tts_result getLanguage(char *value, size_t *iosize);
+    // Retrieve the currently set language, country and variant, or empty strings if none of
+    // parameters have been set. Language and country are represented by their 3-letter ISO code
+    // @param[out]   pointer to the retrieved 3-letter code language value
+    // @param[out]   pointer to the retrieved 3-letter code country value
+    // @param[out]   pointer to the retrieved variant value
+    // @return TTS_SUCCESS, or TTS_FAILURE
+    virtual tts_result getLanguage(char *language, char *country, char *variant);
+
+    // Notifies the engine what audio parameters should be used for the synthesis.
+    // This is meant to be used as a hint, the engine implementation will set the output values
+    // to those of the synthesis format, based on a given hint.
+    // @param[inout] encoding in: the desired audio sample format
+    //                         out: the format used by the TTS engine
+    // @param[inout] rate in: the desired audio sample rate
+    //                         out: the sample rate used by the TTS engine
+    // @param[inout] channels in: the desired number of audio channels
+    //                         out: the number of channels used by the TTS engine
+    // @return TTS_SUCCESS, or TTS_FAILURE
+    virtual tts_result setAudioFormat(AudioSystem::audio_format& encoding, uint32_t& rate,
+            int& channels);
 
     // Set a property for the the TTS engine
     // "size" is the maximum size of "value" for properties "property"
diff --git a/include/ui/Camera.h b/include/ui/Camera.h
index bbc21c4..97e0e90 100644
--- a/include/ui/Camera.h
+++ b/include/ui/Camera.h
@@ -63,16 +63,12 @@
 #define FRAME_CALLBACK_FLAG_CAMERA                   0x05
 #define FRAME_CALLBACK_FLAG_BARCODE_SCANNER          0x07
 
-// msgType in notifyCallback function
+// msgType in notifyCallback and dataCallback functions
 enum {
-    CAMERA_MSG_ERROR,
+    CAMERA_MSG_ERROR = 0,
     CAMERA_MSG_SHUTTER,
     CAMERA_MSG_FOCUS,
-    CAMERA_MSG_ZOOM
-};
-
-// msgType in dataCallback function
-enum {
+    CAMERA_MSG_ZOOM,
     CAMERA_MSG_PREVIEW_FRAME,
     CAMERA_MSG_VIDEO_FRAME,
     CAMERA_MSG_POSTVIEW_FRAME,
diff --git a/libs/utils/BackupData.cpp b/libs/utils/BackupData.cpp
index 0868cff..cce754a 100644
--- a/libs/utils/BackupData.cpp
+++ b/libs/utils/BackupData.cpp
@@ -107,7 +107,10 @@
     } else {
         k = key;
     }
-    LOGD("m_keyPrefix=%s key=%s k=%s", m_keyPrefix.string(), key.string(), k.string());
+    if (true) {
+        LOGD("Writing entity: prefix='%s' key='%s' dataSize=%d", m_keyPrefix.string(), key.string(),
+                dataSize);
+    }
 
     entity_header_v1 header;
     ssize_t keyLen;
diff --git a/libs/utils/BackupHelpers.cpp b/libs/utils/BackupHelpers.cpp
index 99a4abc..4ad9b51 100644
--- a/libs/utils/BackupHelpers.cpp
+++ b/libs/utils/BackupHelpers.cpp
@@ -68,11 +68,15 @@
 
 const static int CURRENT_METADATA_VERSION = 1;
 
-#if 1 // TEST_BACKUP_HELPERS
+#if 1
+#define LOGP(f, x...)
+#else
+#if TEST_BACKUP_HELPERS
 #define LOGP(f, x...) printf(f "\n", x)
 #else
 #define LOGP(x...) LOGD(x)
 #endif
+#endif
 
 const static int ROUND_UP[4] = { 0, 3, 2, 1 };
 
@@ -349,7 +353,6 @@
 
         err = stat(file, &st);
         if (err != 0) {
-            LOGW("Error stating file %s", file);
             r.deleted = true;
         } else {
             r.deleted = false;