AndroidVDA by using Android's MediaCodec API.

media/base/android/media_codec_bridge.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_
+#define MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_
+
+#include <jni.h>
+#include <string>
+
+#include "base/android/scoped_java_ref.h"
+//#include "base/callback.h"
+//#include "base/memory/ref_counted.h"
+
+// This class serves as a bridge for native code to call java functions inside
+// Android MediaCodec class. For more information on Android MediaCodec, check
+// http://developer.android.com/reference/android/media/MediaCodec.html
+
+namespace media {
+
+class MediaCodecBridge {
+ public:
+  explicit MediaCodecBridge(const std::string& type);
+
+  ~MediaCodecBridge();
+
+  void ConfigureAudio(const std::string& mime, int sample_rate,
+      int channel_count, const uint8* csd0, int csd0_size, const uint8* csd1,
+      int csd1_size, int encoder_delay, int encoder_padding,
+      int max_input_size);
+  void ConfigureVideo(const std::string& mime, int width, int height,
+      const uint8* csd0, int csd0_size, const uint8* csd1, int csd1_size,
+      jobject surface);
+
+  void Start();
+  void Flush();
+  void Stop();
+  void Release();
+
+  void GetOutputFormat(int* format, int* width, int* height);
+
+  void QueueInputBuffer(int index, int offset, int size,
+                        int64 presentation_time_us, int flags);
+  int DequeueInputBuffer(int64 timeout_us);
+  int DequeueOutputBuffer(
+      int64 timeout_us, int* offset, int* size, int64* presentation_time_us,
+      int* flags);
+  void ReleaseOutputBuffer(int index, bool render);
+
+  int GetInputBuffers();
+  int GetOutputBuffers();
+
+  void PutToInputBuffer(int index, const uint8* data, int size);
+  void GetFromOutputBuffer(int index, int offset, uint8* data, int size);
+  void GetFromOutputBuffer(int index,
+                           uint8* data0, int size0,
+                           uint8* data1, int size1,
+                           uint8* data2, int size2);
+
+ private:
+  // Java MediaCodec instance.
+  base::android::ScopedJavaGlobalRef<jobject> j_media_codec_;
+
+  base::android::ScopedJavaGlobalRef<jobjectArray> j_input_buffers_;
+  base::android::ScopedJavaGlobalRef<jobjectArray> j_output_buffers_;
+
+  int j_byte_array_size_;
+  base::android::ScopedJavaGlobalRef<jbyteArray> j_byte_array_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaCodecBridge);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_BASE_ANDROID_MEDIA_CODEC_BRIDGE_H_
+