support playing files missing from androids media database

src/ch/blinkenlights/android/vanilla/MediaUtils.java

@@ -29,6 +29,8 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Random;
+import java.util.Vector;
+import java.util.zip.CRC32;
 
 import junit.framework.Assert;
 import android.content.ContentResolver;
@@ -36,7 +38,10 @@ import android.database.Cursor;
 import android.net.Uri;
 import android.os.Environment;
 import android.provider.MediaStore;
-import android.util.Log;
+import android.database.MatrixCursor;
+
+import ch.blinkenlights.bastp.Bastp;
+
 
 /**
  * Provides some static Song/MediaStore-related utility functions.
@@ -545,10 +550,43 @@ public class MediaUtils {
 		final String query = "_data LIKE ? AND is_music";
 		String[] qargs = { path };
 
-		Log.d("VanillaMusic", "Running buildFileQuery for "+query+" with ARG="+qargs[0]);
 		Uri media = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
 		QueryTask result = new QueryTask(media, projection, query, qargs, DEFAULT_SORT);
 		result.type = TYPE_FILE;
 		return result;
 	}
+
+	/**
+	 * Returns a (possibly empty) Cursor for given file path
+	 * @param path The path to the file to be queried
+	 * @return A new Cursor object
+	 * */
+	public static Cursor getCursorForFileQuery(String path) {
+		MatrixCursor matrixCursor = new MatrixCursor(Song.FILLED_PROJECTION);
+		String[] keys = { "", "", "TITLE", "ALBUM", "ARTIST" };
+		HashMap tags  = (new Bastp()).getTags(path);
+
+		if(tags.containsKey("TYPE")) { // File was parseable
+			/* This file is not in the media database but we still need
+			 * to give it an unique id. We are going to use a negative
+			 * ID calculated using the file path.
+			 * This is not perfect as the same file may be accessed using 
+			 * multiple path variations - but getting the inode is not possible
+			 * and hashing the file is out of question */
+			CRC32 crc = new CRC32();
+			crc.update(path.getBytes());
+			Long songId = (Long)(2+crc.getValue())*-1; // must at least be -2 (-1 defines Song-Object to be empty)
+
+			Object[] objData = new Object[] { songId, path, "", "", "", 0, 0, 600000, 0 };
+			for (int i=0; i<keys.length; i++) { // fill in values from BASTP
+				if (tags.containsKey(keys[i])) {
+					objData[i] = (String)((Vector)tags.get(keys[i])).get(0);
+				}
+			}
+			matrixCursor.addRow(objData);
+		}
+
+		return matrixCursor;
+	}
+
 }

src/ch/blinkenlights/android/vanilla/Song.java

@@ -192,7 +192,7 @@ public class Song implements Comparable<Song> {
 					}
 				}
 
-				if (inputStream == null && (mCoverLoadMode & COVER_MODE_ANDROID) != 0) {
+				if (inputStream == null && (mCoverLoadMode & COVER_MODE_ANDROID) != 0 && key.id >= 0) {
 					Uri uri =  Uri.parse("content://media/external/audio/media/" + key.id + "/albumart");
 					ContentResolver res = mContext.getContentResolver();
 					inputStream = res.openInputStream(uri);

src/ch/blinkenlights/android/vanilla/SongTimeline.java

@@ -616,15 +616,23 @@ public final class SongTimeline {
 			return 0;
 		}
 
-		int count = cursor.getCount();
-		if (count == 0) {
-			return 0;
-		}
-
 		int mode = query.mode;
 		int type = query.type;
 		long data = query.data;
 
+		int count = cursor.getCount();
+
+		if (count == 0 && type == MediaUtils.TYPE_FILE && query.selectionArgs.length == 1) {
+			String pathQuery = query.selectionArgs[0];
+			pathQuery = pathQuery.substring(0,pathQuery.length()-1); // remove '%' -> this used to be an sql query!
+			cursor = MediaUtils.getCursorForFileQuery(pathQuery);
+			count = cursor.getCount();
+		}
+
+		if (count == 0) {
+			return 0;
+		}
+
 		ArrayList<Song> timeline = mSongs;
 		synchronized (this) {
 			saveActiveSongs();

src/ch/blinkenlights/bastp/Bastp.java

@@ -53,12 +53,15 @@ public class Bastp {
 			String magic = new String(file_ff);
 			if(magic.equals("fLaC")) {
 				tags = (new FlacFile()).getTags(s);
+				tags.put("TYPE", "FLAC");
 			}
 			else if(magic.equals("OggS")) {
 				tags = (new OggFile()).getTags(s);
+				tags.put("TYPE", "OGG");
 			}
 			else if(file_ff[0] == -1 && file_ff[1] == -5) { /* aka 0xfffb in real languages */
 				tags = (new LameHeader()).getTags(s);
+				tags.put("TYPE", "MP3");
 			}
 			else if(magic.substring(0,3).equals("ID3")) {
 				tags = (new ID3v2File()).getTags(s);
@@ -69,6 +72,7 @@ public class Bastp {
 					inheritTag("REPLAYGAIN_TRACK_GAIN", lameInfo, tags);
 					inheritTag("REPLAYGAIN_ALBUM_GAIN", lameInfo, tags);
 				}
+				tags.put("TYPE", "MP3-ID3");
 			}
 			tags.put("_magic", magic);
 		}