1 files changed, 248 insertions, 0 deletions
diff --git a/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/MediaTranscoder.java b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/MediaTranscoder.java
new file mode 100644
index 000000000..7ec32bc97
--- /dev/null
+++ b/libs/android-transcoder/src/main/java/net/ypresto/androidtranscoder/MediaTranscoder.java
@@ -0,0 +1,248 @@
+/*
+ * Copyright (C) 2014 Yuya Tanaka
+ *
+ * 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 net.ypresto.androidtranscoder;
+
+import android.media.MediaFormat;
+import android.os.Handler;
+import android.os.Looper;
+import android.util.Log;
+
+import net.ypresto.androidtranscoder.engine.MediaTranscoderEngine;
+import net.ypresto.androidtranscoder.format.MediaFormatPresets;
+import net.ypresto.androidtranscoder.format.MediaFormatStrategy;
+
+import java.io.FileDescriptor;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.concurrent.Callable;
+import java.util.concurrent.Future;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicReference;
+
+public class MediaTranscoder {
+    private static final String TAG = "MediaTranscoder";
+    private static final int MAXIMUM_THREAD = 1; // TODO
+    private static volatile MediaTranscoder sMediaTranscoder;
+    private ThreadPoolExecutor mExecutor;
+
+    private MediaTranscoder() {
+        mExecutor = new ThreadPoolExecutor(
+                0, MAXIMUM_THREAD, 60, TimeUnit.SECONDS,
+                new LinkedBlockingQueue<Runnable>(),
+                new ThreadFactory() {
+                    @Override
+                    public Thread newThread(Runnable r) {
+                        return new Thread(r, "MediaTranscoder-Worker");
+                    }
+                });
+    }
+
+    public static MediaTranscoder getInstance() {
+        if (sMediaTranscoder == null) {
+            synchronized (MediaTranscoder.class) {
+                if (sMediaTranscoder == null) {
+                    sMediaTranscoder = new MediaTranscoder();
+                }
+            }
+        }
+        return sMediaTranscoder;
+    }
+
+    /**
+     * Transcodes video file asynchronously.
+     * Audio track will be kept unchanged.
+     *
+     * @param inFileDescriptor FileDescriptor for input.
+     * @param outPath          File path for output.
+     * @param listener         Listener instance for callback.
+     * @deprecated Use {@link #transcodeVideo(FileDescriptor, String, MediaFormatStrategy, MediaTranscoder.Listener)} which accepts output video format.
+     */
+    @Deprecated
+    public Future<Void> transcodeVideo(final FileDescriptor inFileDescriptor, final String outPath, final Listener listener) {
+        return transcodeVideo(inFileDescriptor, outPath, new MediaFormatStrategy() {
+            @Override
+            public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) {
+                return MediaFormatPresets.getExportPreset960x540();
+            }
+
+            @Override
+            public MediaFormat createAudioOutputFormat(MediaFormat inputFormat) {
+                return null;
+            }
+        }, listener);
+    }
+
+    /**
+     * Transcodes video file asynchronously.
+     * Audio track will be kept unchanged.
+     *
+     * @param inPath            File path for input.
+     * @param outPath           File path for output.
+     * @param outFormatStrategy Strategy for output video format.
+     * @param listener          Listener instance for callback.
+     * @throws IOException if input file could not be read.
+     */
+    public Future<Void> transcodeVideo(final String inPath, final String outPath, final MediaFormatStrategy outFormatStrategy, final Listener listener) throws IOException {
+        FileInputStream fileInputStream = null;
+        FileDescriptor inFileDescriptor;
+        try {
+            fileInputStream = new FileInputStream(inPath);
+            inFileDescriptor = fileInputStream.getFD();
+        } catch (IOException e) {
+            if (fileInputStream != null) {
+                try {
+                    fileInputStream.close();
+                } catch (IOException eClose) {
+                    Log.e(TAG, "Can't close input stream: ", eClose);
+                }
+            }
+            throw e;
+        }
+        final FileInputStream finalFileInputStream = fileInputStream;
+        return transcodeVideo(inFileDescriptor, outPath, outFormatStrategy, new Listener() {
+            @Override
+            public void onTranscodeProgress(double progress) {
+                listener.onTranscodeProgress(progress);
+            }
+
+            @Override
+            public void onTranscodeCompleted() {
+                closeStream();
+                listener.onTranscodeCompleted();
+            }
+
+            @Override
+            public void onTranscodeCanceled() {
+                closeStream();
+                listener.onTranscodeCanceled();
+            }
+
+            @Override
+            public void onTranscodeFailed(Exception exception) {
+                closeStream();
+                listener.onTranscodeFailed(exception);
+            }
+
+            private void closeStream() {
+                try {
+                    finalFileInputStream.close();
+                } catch (IOException e) {
+                    Log.e(TAG, "Can't close input stream: ", e);
+                }
+            }
+        });
+    }
+
+    /**
+     * Transcodes video file asynchronously.
+     * Audio track will be kept unchanged.
+     *
+     * @param inFileDescriptor  FileDescriptor for input.
+     * @param outPath           File path for output.
+     * @param outFormatStrategy Strategy for output video format.
+     * @param listener          Listener instance for callback.
+     */
+    public Future<Void> transcodeVideo(final FileDescriptor inFileDescriptor, final String outPath, final MediaFormatStrategy outFormatStrategy, final Listener listener) {
+        Looper looper = Looper.myLooper();
+        if (looper == null) looper = Looper.getMainLooper();
+        final Handler handler = new Handler(looper);
+        final AtomicReference<Future<Void>> futureReference = new AtomicReference<>();
+        final Future<Void> createdFuture = mExecutor.submit(new Callable<Void>() {
+            @Override
+            public Void call() throws Exception {
+                Exception caughtException = null;
+                try {
+                    MediaTranscoderEngine engine = new MediaTranscoderEngine();
+                    engine.setProgressCallback(new MediaTranscoderEngine.ProgressCallback() {
+                        @Override
+                        public void onProgress(final double progress) {
+                            handler.post(new Runnable() { // TODO: reuse instance
+                                @Override
+                                public void run() {
+                                    listener.onTranscodeProgress(progress);
+                                }
+                            });
+                        }
+                    });
+                    engine.setDataSource(inFileDescriptor);
+                    engine.transcodeVideo(outPath, outFormatStrategy);
+                } catch (IOException e) {
+                    Log.w(TAG, "Transcode failed: input file (fd: " + inFileDescriptor.toString() + ") not found"
+                            + " or could not open output file ('" + outPath + "') .", e);
+                    caughtException = e;
+                } catch (InterruptedException e) {
+                    Log.i(TAG, "Cancel transcode video file.", e);
+                    caughtException = e;
+                } catch (RuntimeException e) {
+                    Log.e(TAG, "Fatal error while transcoding, this might be invalid format or bug in engine or Android.", e);
+                    caughtException = e;
+                }
+
+                final Exception exception = caughtException;
+                handler.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        if (exception == null) {
+                            listener.onTranscodeCompleted();
+                        } else {
+                            Future<Void> future = futureReference.get();
+                            if (future != null && future.isCancelled()) {
+                                listener.onTranscodeCanceled();
+                            } else {
+                                listener.onTranscodeFailed(exception);
+                            }
+                        }
+                    }
+                });
+
+                if (exception != null) throw exception;
+                return null;
+            }
+        });
+        futureReference.set(createdFuture);
+        return createdFuture;
+    }
+
+    public interface Listener {
+        /**
+         * Called to notify progress.
+         *
+         * @param progress Progress in [0.0, 1.0] range, or negative value if progress is unknown.
+         */
+        void onTranscodeProgress(double progress);
+
+        /**
+         * Called when transcode completed.
+         */
+        void onTranscodeCompleted();
+
+        /**
+         * Called when transcode canceled.
+         */
+        void onTranscodeCanceled();
+
+        /**
+         * Called when transcode failed.
+         *
+         * @param exception Exception thrown from {@link MediaTranscoderEngine#transcodeVideo(String, MediaFormatStrategy)}.
+         *                  Note that it IS NOT {@link java.lang.Throwable}. This means {@link java.lang.Error} won't be caught.
+         */
+        void onTranscodeFailed(Exception exception);
+    }
+}