media/filters/audio_decoder_stream_unittest.cc

   1 // Copyright 2018 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include <memory>
   6 #include <utility>
   7
   8 #include "base/bind.h"
   9 #include "base/callback_helpers.h"
  10 #include "base/memory/raw_ptr.h"
  11 #include "base/run_loop.h"
  12 #include "base/test/gmock_callback_support.h"
  13 #include "base/test/task_environment.h"
  14 #include "base/threading/sequenced_task_runner_handle.h"
  15 #include "base/time/time.h"
  16 #include "media/base/media_util.h"
  17 #include "media/base/mock_filters.h"
  18 #include "media/filters/decoder_stream.h"
  19 #include "testing/gmock/include/gmock/gmock.h"
  20 #include "testing/gtest/include/gtest/gtest.h"
  21
  22 using ::base::test::RunCallback;
  23 using ::base::test::RunOnceCallback;
  24 using testing::_;
  25 using testing::AnyNumber;
  26 using testing::DoAll;
  27 using testing::Invoke;
  28 using testing::Return;
  29 using testing::SaveArg;
  30
  31 namespace media {
  32
  33 MATCHER(IsRegularDecoderBuffer, "") {
  34   return !arg->end_of_stream();
  35 }
  36
  37 MATCHER(IsEOSDecoderBuffer, "") {
  38   return arg->end_of_stream();
  39 }
  40
  41 static void OnAudioDecoderStreamInitialized(base::OnceClosure closure,
  42                                             bool success) {
  43   ASSERT_TRUE(success);
  44   std::move(closure).Run();
  45 }
  46
  47 class AudioDecoderStreamTest : public testing::Test {
  48  public:
  49   AudioDecoderStreamTest()
  50       : audio_decoder_stream_(
  51             std::make_unique<AudioDecoderStream::StreamTraits>(
  52                 &media_log_,
  53                 CHANNEL_LAYOUT_STEREO,
  54                 kSampleFormatPlanarF32),
  55             task_environment_.GetMainThreadTaskRunner(),
  56             base::BindRepeating(&AudioDecoderStreamTest::CreateMockAudioDecoder,
  57                                 base::Unretained(this)),
  58             &media_log_) {
  59     // Any valid config will do.
  60     demuxer_stream_.set_audio_decoder_config({AudioCodec::kAAC,
  61                                               kSampleFormatS16,
  62                                               CHANNEL_LAYOUT_STEREO,
  63                                               44100,
  64                                               {},
  65                                               {}});
  66     EXPECT_CALL(demuxer_stream_, SupportsConfigChanges())
  67         .WillRepeatedly(Return(true));
  68
  69     base::RunLoop run_loop;
  70     audio_decoder_stream_.Initialize(
  71         &demuxer_stream_,
  72         base::BindOnce(&OnAudioDecoderStreamInitialized,
  73                        run_loop.QuitClosure()),
  74         nullptr, base::DoNothing(), base::DoNothing());
  75     run_loop.Run();
  76   }
  77
  78   AudioDecoderStreamTest(const AudioDecoderStreamTest&) = delete;
  79   AudioDecoderStreamTest& operator=(const AudioDecoderStreamTest&) = delete;
  80
  81   MockDemuxerStream* demuxer_stream() { return &demuxer_stream_; }
  82   MockAudioDecoder* decoder() { return decoder_; }
  83
  84   void ReadAudioBuffer(base::OnceClosure closure) {
  85     audio_decoder_stream_.Read(
  86         base::BindOnce(&AudioDecoderStreamTest::OnAudioBufferReadDone,
  87                        base::Unretained(this), std::move(closure)));
  88   }
  89
  90   void ProduceDecoderOutput(scoped_refptr<DecoderBuffer> buffer,
  91                             AudioDecoder::DecodeCB decode_cb) {
  92     // Make sure successive AudioBuffers have increasing timestamps.
  93     last_timestamp_ += base::Milliseconds(27);
  94     const auto& config = demuxer_stream_.audio_decoder_config();
  95     base::SequencedTaskRunnerHandle::Get()->PostTask(
  96         FROM_HERE,
  97         base::BindOnce(
  98             decoder_output_cb_,
  99             AudioBuffer::CreateEmptyBuffer(
 100                 config.channel_layout(), config.channels(),
 101                 config.samples_per_second(), 1221, last_timestamp_)));
 102     base::SequencedTaskRunnerHandle::Get()->PostTask(
 103         FROM_HERE,
 104         base::BindOnce(std::move(decode_cb), DecoderStatus::Codes::kOk));
 105   }
 106
 107   void RunUntilIdle() { task_environment_.RunUntilIdle(); }
 108
 109  private:
 110   std::vector<std::unique_ptr<AudioDecoder>> CreateMockAudioDecoder() {
 111     auto decoder = std::make_unique<MockAudioDecoder>();
 112     EXPECT_CALL(*decoder, Initialize_(_, _, _, _, _))
 113         .Times(AnyNumber())
 114         .WillRepeatedly(DoAll(SaveArg<3>(&decoder_output_cb_),
 115                               RunOnceCallback<2>(DecoderStatus::Codes::kOk)));
 116     decoder_ = decoder.get();
 117
 118     std::vector<std::unique_ptr<AudioDecoder>> result;
 119     result.push_back(std::move(decoder));
 120     return result;
 121   }
 122
 123   void OnAudioBufferReadDone(base::OnceClosure closure,
 124                              AudioDecoderStream::ReadResult result) {
 125     std::move(closure).Run();
 126   }
 127
 128   base::test::TaskEnvironment task_environment_;
 129   NullMediaLog media_log_;
 130   testing::NiceMock<MockDemuxerStream> demuxer_stream_{DemuxerStream::AUDIO};
 131   AudioDecoderStream audio_decoder_stream_;
 132
 133   raw_ptr<MockAudioDecoder> decoder_ = nullptr;
 134   AudioDecoder::OutputCB decoder_output_cb_;
 135   base::TimeDelta last_timestamp_;
 136 };
 137
 138 TEST_F(AudioDecoderStreamTest, FlushOnConfigChange) {
 139   MockAudioDecoder* first_decoder = decoder();
 140   ASSERT_NE(first_decoder, nullptr);
 141
 142   // Make a regular DemuxerStream::Read().
 143   EXPECT_CALL(*demuxer_stream(), OnRead(_))
 144       .WillOnce(RunOnceCallback<0>(DemuxerStream::kOk, new DecoderBuffer(12)));
 145   EXPECT_CALL(*decoder(), Decode(IsRegularDecoderBuffer(), _))
 146       .WillOnce(Invoke(this, &AudioDecoderStreamTest::ProduceDecoderOutput));
 147   base::RunLoop run_loop0;
 148   ReadAudioBuffer(run_loop0.QuitClosure());
 149   run_loop0.Run();
 150
 151   // Make a config-change DemuxerStream::Read().
 152   // Expect the decoder to be flushed.  Upon flushing, the decoder releases
 153   // internally buffered output.
 154   EXPECT_CALL(*demuxer_stream(), OnRead(_))
 155       .WillOnce(RunOnceCallback<0>(DemuxerStream::kConfigChanged, nullptr));
 156   EXPECT_CALL(*decoder(), Decode(IsEOSDecoderBuffer(), _))
 157       .WillOnce(Invoke(this, &AudioDecoderStreamTest::ProduceDecoderOutput));
 158   base::RunLoop run_loop1;
 159   ReadAudioBuffer(run_loop1.QuitClosure());
 160   run_loop1.Run();
 161
 162   // Expect the decoder to be re-initialized when AudioDecoderStream finishes
 163   // processing the last decode.
 164   EXPECT_CALL(*decoder(), Initialize_(_, _, _, _, _));
 165   RunUntilIdle();
 166 }
 167
 168 }  // namespace media