Fix music streaming.

README.md

@@ -22,7 +22,6 @@ official CMA and also offer some features missing in the original one.
 #### TODO:
 * Complete categories for music.
 * SQLite backend for database.
-* Fix streaming for music.
 
 ## Planned features
 * **UPNP bridge**: connect an existing UPNP server to interface with the Vita

cmaevent.cpp

@@ -348,7 +348,7 @@ void CmaEvent::vitaEventSendObjectMetadata(vita_event_t *event, int eventId)
     QMutexLocker locker(&db->mutex);
 
     metadata_t *meta;
-    int count = db->filterObjects(browse.ohfiParent, &meta);  // if meta is null, will return empty XML
+    int count = db->filterObjects(browse.ohfiParent, &meta, browse.index, browse.numObjects);  // if meta is null, will return empty XML
     qDebug("Sending %i metadata filtered objects for OHFI %d", count, browse.ohfiParent);
 
     if(VitaMTP_SendObjectMetadata(device, eventId, meta) != PTP_RC_OK) {  // send all objects with OHFI parent

database.cpp

@@ -406,7 +406,7 @@ void Database::dumpMetadataList(const metadata_t *p_head)
     }
 }
 
-int Database::filterObjects(int ohfiParent, metadata_t **p_head)
+int Database::filterObjects(int ohfiParent, metadata_t **p_head, int index, int max_number)
 {
     QMutexLocker locker(&mutex);
     CMARootObject *parent = static_cast<CMARootObject *>(ohfiToObject(ohfiParent));
@@ -430,6 +430,7 @@ int Database::filterObjects(int ohfiParent, metadata_t **p_head)
         }
     }
 
+    int offset = 0;
     int numObjects = 0;
     metadata_t temp = metadata_t();
     metadata_t *tail = &temp;
@@ -437,9 +438,16 @@ int Database::filterObjects(int ohfiParent, metadata_t **p_head)
     for(map_list::iterator root = object_list.begin(); root != object_list.end(); ++root) {
         for(root_list::iterator object = (*root).begin(); object != (*root).end(); ++object) {
             if(acceptFilteredObject(parent, *object, type)) {
-                tail->next_metadata = &(*object)->metadata;
-                tail = tail->next_metadata;
-                numObjects++;
+                if(offset++ >= index)
+                {
+                    tail->next_metadata = &(*object)->metadata;
+                    tail = tail->next_metadata;
+                    numObjects++;
+                }
+
+                if(max_number > 0 && numObjects >= max_number) {
+                    break;
+                }
             }
         }
 

database.h

@@ -49,7 +49,7 @@ public:
     bool find(int ohfi, find_data &data);
     void append(int parent_ohfi, CMAObject *object);
     bool remove(const CMAObject *obj, int ohfi_root = 0);
-    int filterObjects(int ohfiParent, metadata_t **p_head);
+    int filterObjects(int ohfiParent, metadata_t **p_head, int index = 0, int max_number = 0);
     CMAObject *pathToObject(const char *path, int ohfiRoot);
     int acceptFilteredObject(const CMAObject *parent, const CMAObject *current, int type);