Enable AudioDecoder unit tests on Android

media/filters/audio_decoder_test.h

Index: media/filters/audio_decoder_test.h
diff --git a/media/filters/audio_decoder_test.h b/media/filters/audio_decoder_test.h
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+++ b/media/filters/audio_decoder_test.h
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+// Copyright 2016 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_FILTERS_AUDIO_DECODER_TEST_H_
+#define MEDIA_FILTERS_AUDIO_DECODER_TEST_H_
+
+#include <stdint.h>
+
+#include <deque>
+#include <ostream>
+#include <string>
+
+#include "base/macros.h"
+#include "base/message_loop/message_loop.h"
+#include "base/time/time.h"
+#include "media/base/audio_decoder.h"
+#include "media/base/audio_decoder_config.h"
+#include "media/base/channel_layout.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace media {
+
+enum AudioDecoderType {
+  FFMPEG,
+  OPUS,
+};
+
+struct DecodedBufferExpectations {
+  const int64_t timestamp;
+  const int64_t duration;
+  const char* hash;
+};
+
+struct DecoderTestData {
+  const AudioDecoderType decoder_type;
+  const AudioCodec codec;
+  const char* filename;
+  const DecodedBufferExpectations* expectations;
+  const int first_packet_pts;
+  const int samples_per_second;
+  const ChannelLayout channel_layout;
+};
+
+// Tells gtest how to print our DecoderTestData structure.
+inline std::ostream& operator<<(std::ostream& os, const DecoderTestData& data) {
+  return os << data.filename;
+}
+
+class AudioBuffer;
+class AudioFileReader;
+class DecoderBuffer;
+class InMemoryUrlProtocol;
+
+class AudioDecoderTest : public testing::TestWithParam<DecoderTestData> {
+ public:
+  AudioDecoderTest();
+
+  virtual ~AudioDecoderTest() override;
+
+ protected:
+  void DecodeBuffer(const scoped_refptr<DecoderBuffer>& buffer);
+  void WaitForDecodeResponse();
+  void SendEndOfStream();
+  void Initialize();
+  void InitializeDecoder(const AudioDecoderConfig& config);
+  void InitializeDecoderWithResult(const AudioDecoderConfig& config,
+                                   bool success);
+  void Decode();
+  void Reset();
+  void Seek(base::TimeDelta seek_time);
+  void OnDecoderOutput(const scoped_refptr<AudioBuffer>& buffer);
+  void DecodeFinished(AudioDecoder::Status status);
+  void ResetFinished();
+
+  // Generates an MD5 hash of the audio signal. Should not be used for checks
+  // across platforms as audio varies slightly across platforms.
+  std::string GetDecodedAudioMD5(size_t i);
+  void ExpectDecodedAudio(size_t i, const std::string& exact_hash);
+
+  size_t decoded_audio_size() const { return decoded_audio_.size(); }
+  base::TimeDelta start_timestamp() const { return start_timestamp_; }
+  const scoped_refptr<AudioBuffer>& decoded_audio(size_t i) {
+    return decoded_audio_[i];
+  }
+  AudioDecoder::Status last_decode_status() const {
+    return last_decode_status_;
+  }
+
+ private:
+  base::MessageLoop message_loop_;
+  scoped_refptr<DecoderBuffer> data_;
+  scoped_ptr<InMemoryUrlProtocol> protocol_;
+  scoped_ptr<AudioFileReader> reader_;
+
+  scoped_ptr<AudioDecoder> decoder_;
+  bool pending_decode_;
+  bool pending_reset_;
+  AudioDecoder::Status last_decode_status_;
+
+  std::deque<scoped_refptr<AudioBuffer>> decoded_audio_;
+  base::TimeDelta start_timestamp_;
+
+  DISALLOW_COPY_AND_ASSIGN(AudioDecoderTest);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_FILTERS_AUDIO_DECODER_TEST_H_