1 files changed, 84 insertions, 0 deletions
diff --git a/src/com/android/exoplayer2/ext/ffmpeg/FfmpegLibrary.java b/src/com/android/exoplayer2/ext/ffmpeg/FfmpegLibrary.java
new file mode 100644
index 00000000..daa77340
--- /dev/null
+++ b/src/com/android/exoplayer2/ext/ffmpeg/FfmpegLibrary.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * 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 com.google.android.exoplayer2.ext.ffmpeg;
+
+import com.google.android.exoplayer2.util.LibraryLoader;
+import com.google.android.exoplayer2.util.MimeTypes;
+
+/**
+ * This class is based on com.google.android.exoplayer2.ext.ffmpeg.FfmpegLibrary from ExoPlayer2
+ * in order to support mp2 decoder.
+ * Configures and queries the underlying native library.
+ */
+public final class FfmpegLibrary {
+
+    private static final LibraryLoader LOADER =
+            new LibraryLoader("avutil", "avresample", "avcodec", "ffmpeg");
+
+    private FfmpegLibrary() {}
+
+    /**
+     * Overrides the names of the FFmpeg native libraries. If an application wishes to call this
+     * method, it must do so before calling any other method defined by this class, and before
+     * instantiating a {@link FfmpegAudioRenderer} instance.
+     */
+    public static void setLibraries(String... libraries) {
+        LOADER.setLibraries(libraries);
+    }
+
+    /**
+     * Returns whether the underlying library is available, loading it if necessary.
+     */
+    public static boolean isAvailable() {
+        return LOADER.isAvailable();
+    }
+
+    /**
+     * Returns the version of the underlying library if available, or null otherwise.
+     */
+    public static String getVersion() {
+        return isAvailable() ? ffmpegGetVersion() : null;
+    }
+
+    /**
+     * Returns whether the underlying library supports the specified MIME type.
+     */
+    public static boolean supportsFormat(String mimeType) {
+        if (!isAvailable()) {
+            return false;
+        }
+        String codecName = getCodecName(mimeType);
+        return codecName != null && ffmpegHasDecoder(codecName);
+    }
+
+    /**
+     * Returns the name of the FFmpeg decoder that could be used to decode {@code mimeType}.
+     */
+    /* package */ static String getCodecName(String mimeType) {
+        switch (mimeType) {
+            case MimeTypes.AUDIO_MPEG_L2:
+                return "mp2";
+            case MimeTypes.AUDIO_AC3:
+                return "ac3";
+            default:
+                return null;
+        }
+    }
+
+    private static native String ffmpegGetVersion();
+    private static native boolean ffmpegHasDecoder(String codecName);
+
+}