Start on a FLAC info tool

tools/src/main/java/org/gagravarr/flac/tools/FlacInfoTool.java

@@ -0,0 +1,99 @@
+/*
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.gagravarr.flac.tools;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+
+import org.gagravarr.flac.FlacAudioFrame;
+import org.gagravarr.flac.FlacAudioSubFrame;
+import org.gagravarr.flac.FlacFile;
+import org.gagravarr.flac.FlacOggFile;
+
+/**
+ * Prints out information on the contents of a FLAC file,
+ *  including metadata and frame-level details.
+ * It's similar to the analysis from "flac -a"
+ */
+public class FlacInfoTool {
+    public static void main(String[] args) throws Exception {
+        if(args.length == 0) {
+            System.err.println("Use:");
+            System.err.println("   FlacInfoTool <file> [file] [file]");
+            System.exit(1);
+        }
+
+        for(String f : args) {
+            FlacInfoTool info = new FlacInfoTool(new File(f));
+            info.printMetadataInfo();
+            info.printFrameInfo();
+            info.flac.close();
+        }
+    }
+
+    private File file;
+    private FlacFile flac;
+    public FlacInfoTool(File f) throws FileNotFoundException, IOException {
+        if(! f.exists()) {
+            throw new FileNotFoundException(f.toString());
+        }
+
+        file = f;
+        flac = FlacFile.open(f);
+    }
+
+    public void printMetadataInfo() throws IOException {
+        if (flac instanceof FlacOggFile) {
+            FlacOggFile ogg = (FlacOggFile)flac;
+            System.out.println("FLAC-in-Ogg, in stream " + ogg.getSid());
+        } else {
+            System.out.println("FLAC Native");
+        }
+        // TODO Output more of this
+        System.out.println(flac.getInfo());
+        System.out.println(flac.getTags());
+    }
+
+    public void printFrameInfo() throws IOException {
+        int fn = -1;
+        FlacAudioFrame audio;
+        while ((audio=flac.getNextAudioPacket()) != null) {
+            fn++;
+
+            System.out.print("frame="+fn);
+            System.out.print("  ");
+            System.out.print("offset=??");
+            System.out.print("  ");
+            System.out.print("bits="+(audio.getData().length*8));
+            System.out.print("  ");
+            System.out.print("blocksize="+audio.getBlockSize());
+            System.out.print("  ");
+            System.out.print("sample_rate="+audio.getSampleRate());
+            System.out.print("  ");
+            System.out.print("channels="+audio.getNumChannels());
+            System.out.print("  ");
+            System.out.print("channel_assignment=??");
+            System.out.println();
+
+            for (int sfn=0; sfn<audio.getSubFrames().length; sfn++) {
+                FlacAudioSubFrame sf = audio.getSubFrames()[sfn];
+                System.out.print("   ");
+                System.out.print("subframe="+sfn);
+                // Rest TODO
+                System.out.println();
+            }
+        }
+    }
+}