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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 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 "base/compiler_specific.h" |
| 6 #include "base/memory/scoped_ptr.h" |
| 7 #include "base/sync_socket.h" |
| 8 #include "base/time/time.h" |
| 9 #include "content/browser/renderer_host/media/audio_input_sync_writer.h" |
| 10 #include "content/public/test/test_browser_thread_bundle.h" |
| 11 #include "media/audio/audio_parameters.h" |
| 12 #include "media/base/audio_bus.h" |
| 13 #include "media/base/channel_layout.h" |
| 14 #include "testing/gmock/include/gmock/gmock.h" |
| 15 #include "testing/gtest/include/gtest/gtest.h" |
| 16 |
| 17 using ::testing::_; |
| 18 using base::TimeDelta; |
| 19 using media::AudioBus; |
| 20 using media::AudioParameters; |
| 21 |
| 22 namespace content { |
| 23 |
| 24 namespace { |
| 25 |
| 26 // Number of audio buffers in the faked ring buffer. |
| 27 const int kSegments = 10; |
| 28 |
| 29 // Audio buffer parameters. |
| 30 const int channels = 1; |
| 31 const int sampling_frequency_hz = 16000; |
| 32 const int frames = sampling_frequency_hz / 100; // 10 ms |
| 33 const int bits_per_sample = 16; |
| 34 |
| 35 // Faked ring buffer. Must be aligned. |
| 36 #define DATA_ALIGNMENT 16 |
| 37 COMPILE_ASSERT(AudioBus::kChannelAlignment == DATA_ALIGNMENT, |
| 38 Data_alignment_not_same_as_AudioBus); |
| 39 ALIGNAS(DATA_ALIGNMENT) uint8 data[kSegments * |
| 40 (sizeof(media::AudioInputBufferParameters) + frames * channels * |
| 41 sizeof(float))]; |
| 42 |
| 43 } // namespace |
| 44 |
| 45 // Mocked out sockets used for Send/ReceiveWithTimeout. Counts the number of |
| 46 // outstanding reads, i.e. the diff between send and receive calls. |
| 47 class MockCancelableSyncSocket : public base::CancelableSyncSocket { |
| 48 public: |
| 49 MockCancelableSyncSocket(int buffer_size) |
| 50 : in_failure_mode_(false), |
| 51 writes_(0), |
| 52 reads_(0), |
| 53 receives_(0), |
| 54 buffer_size_(buffer_size), |
| 55 read_buffer_index_(0) {} |
| 56 |
| 57 size_t Send(const void* buffer, size_t length) override { |
| 58 EXPECT_EQ(length, sizeof(uint32_t)); |
| 59 |
| 60 ++writes_; |
| 61 EXPECT_LE(NumberOfBuffersFilled(), buffer_size_); |
| 62 return length; |
| 63 } |
| 64 |
| 65 size_t Receive(void* buffer, size_t length) override { |
| 66 EXPECT_EQ(0u, length % sizeof(uint32_t)); |
| 67 |
| 68 if (in_failure_mode_) |
| 69 return 0; |
| 70 if (receives_ == reads_) |
| 71 return 0; |
| 72 |
| 73 uint32_t* ptr = static_cast<uint32_t*>(buffer); |
| 74 size_t received = 0; |
| 75 for (; received < length / sizeof(uint32_t) && receives_ < reads_; |
| 76 ++received, ++ptr) { |
| 77 ++receives_; |
| 78 EXPECT_LE(receives_, reads_); |
| 79 *ptr = ++read_buffer_index_; |
| 80 } |
| 81 return received * sizeof(uint32_t); |
| 82 } |
| 83 |
| 84 size_t Peek() override { |
| 85 return (reads_ - receives_) * sizeof(uint32_t); |
| 86 } |
| 87 |
| 88 // Simluates reading |buffers| number of buffers from the ring buffer. |
| 89 void Read(int buffers) { |
| 90 reads_ += buffers; |
| 91 EXPECT_LE(reads_, writes_); |
| 92 } |
| 93 |
| 94 // When |in_failure_mode_| == true, the socket fails to receive. |
| 95 void SetFailureMode(bool in_failure_mode) { |
| 96 in_failure_mode_ = in_failure_mode; |
| 97 } |
| 98 |
| 99 int NumberOfBuffersFilled() { return writes_ - reads_; } |
| 100 |
| 101 private: |
| 102 bool in_failure_mode_; |
| 103 int writes_; |
| 104 int reads_; |
| 105 int receives_; |
| 106 int buffer_size_; |
| 107 uint32_t read_buffer_index_; |
| 108 |
| 109 DISALLOW_COPY_AND_ASSIGN(MockCancelableSyncSocket); |
| 110 }; |
| 111 |
| 112 class AudioInputSyncWriterUnderTest : public AudioInputSyncWriter { |
| 113 public: |
| 114 AudioInputSyncWriterUnderTest(void* shared_memory, |
| 115 size_t shared_memory_size, |
| 116 int shared_memory_segment_count, |
| 117 const media::AudioParameters& params, |
| 118 base::CancelableSyncSocket* socket) |
| 119 : AudioInputSyncWriter(shared_memory, shared_memory_size, |
| 120 shared_memory_segment_count, params) { |
| 121 socket_.reset(socket); |
| 122 } |
| 123 |
| 124 ~AudioInputSyncWriterUnderTest() override {} |
| 125 |
| 126 MOCK_METHOD1(AddToNativeLog, void(const std::string& message)); |
| 127 }; |
| 128 |
| 129 class AudioInputSyncWriterTest : public testing::Test { |
| 130 public: |
| 131 AudioInputSyncWriterTest() |
| 132 : socket_(nullptr) { |
| 133 const media::ChannelLayout layout = |
| 134 media::GuessChannelLayout(channels); |
| 135 EXPECT_NE(media::ChannelLayout::CHANNEL_LAYOUT_UNSUPPORTED, layout); |
| 136 AudioParameters audio_params( |
| 137 AudioParameters::AUDIO_FAKE, layout, sampling_frequency_hz, |
| 138 bits_per_sample, frames); |
| 139 |
| 140 const uint32 segment_size = |
| 141 sizeof(media::AudioInputBufferParameters) + |
| 142 AudioBus::CalculateMemorySize(audio_params); |
| 143 size_t data_size = kSegments * segment_size; |
| 144 EXPECT_LE(data_size, sizeof(data)); |
| 145 |
| 146 socket_ = new MockCancelableSyncSocket(kSegments); |
| 147 writer_.reset(new AudioInputSyncWriterUnderTest( |
| 148 &data[0], data_size, kSegments, audio_params, socket_)); |
| 149 audio_bus_ = AudioBus::Create(audio_params); |
| 150 } |
| 151 |
| 152 ~AudioInputSyncWriterTest() override { |
| 153 } |
| 154 |
| 155 // Get total number of expected log calls. On non-Android we expect one log |
| 156 // call at first Write() call, zero on Android. Besides that only for errors. |
| 157 int GetTotalNumberOfExpectedLogCalls(int expected_calls_due_to_error) { |
| 158 #if defined(OS_ANDROID) |
| 159 return expected_calls_due_to_error; |
| 160 #else |
| 161 return expected_calls_due_to_error + 1; |
| 162 #endif |
| 163 } |
| 164 |
| 165 protected: |
| 166 scoped_ptr<AudioInputSyncWriterUnderTest> writer_; |
| 167 MockCancelableSyncSocket* socket_; |
| 168 scoped_ptr<AudioBus> audio_bus_; |
| 169 |
| 170 private: |
| 171 TestBrowserThreadBundle thread_bundle_; |
| 172 |
| 173 DISALLOW_COPY_AND_ASSIGN(AudioInputSyncWriterTest); |
| 174 }; |
| 175 |
| 176 TEST_F(AudioInputSyncWriterTest, SingleWriteAndRead) { |
| 177 // We always expect one log call at first write. |
| 178 EXPECT_CALL(*writer_.get(), AddToNativeLog(_)) |
| 179 .Times(GetTotalNumberOfExpectedLogCalls(0)); |
| 180 |
| 181 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 182 EXPECT_EQ(1, socket_->NumberOfBuffersFilled()); |
| 183 EXPECT_EQ(0u, socket_->Peek()); |
| 184 |
| 185 socket_->Read(1); |
| 186 EXPECT_EQ(0, socket_->NumberOfBuffersFilled()); |
| 187 EXPECT_EQ(sizeof(uint32_t), socket_->Peek()); |
| 188 } |
| 189 |
| 190 TEST_F(AudioInputSyncWriterTest, MultipleWritesAndReads) { |
| 191 EXPECT_CALL(*writer_.get(), AddToNativeLog(_)) |
| 192 .Times(GetTotalNumberOfExpectedLogCalls(0)); |
| 193 |
| 194 for (int i = 1; i <= 2 * kSegments; ++i) { |
| 195 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 196 EXPECT_EQ(1, socket_->NumberOfBuffersFilled()); |
| 197 EXPECT_EQ(0u, socket_->Peek()); |
| 198 |
| 199 socket_->Read(1); |
| 200 EXPECT_EQ(0, socket_->NumberOfBuffersFilled()); |
| 201 EXPECT_EQ(sizeof(uint32_t), socket_->Peek()); |
| 202 } |
| 203 } |
| 204 |
| 205 TEST_F(AudioInputSyncWriterTest, MultipleWritesNoReads) { |
| 206 EXPECT_CALL(*writer_.get(), AddToNativeLog(_)) |
| 207 .Times(GetTotalNumberOfExpectedLogCalls(kSegments)); |
| 208 |
| 209 for (int i = 1; i <= kSegments; ++i) { |
| 210 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 211 EXPECT_EQ(i, socket_->NumberOfBuffersFilled()); |
| 212 EXPECT_EQ(0u, socket_->Peek()); |
| 213 } |
| 214 |
| 215 // Now the ring buffer is full, do more writes. We should get an extra error |
| 216 // log call for each write. See top EXPECT_CALL. |
| 217 for (int i = 1; i <= kSegments; ++i) { |
| 218 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 219 EXPECT_EQ(kSegments, socket_->NumberOfBuffersFilled()); |
| 220 EXPECT_EQ(0u, socket_->Peek()); |
| 221 } |
| 222 } |
| 223 |
| 224 TEST_F(AudioInputSyncWriterTest, FillAndEmptyRingBuffer) { |
| 225 EXPECT_CALL(*writer_.get(), AddToNativeLog(_)) |
| 226 .Times(GetTotalNumberOfExpectedLogCalls(1)); |
| 227 |
| 228 // Fill ring buffer. |
| 229 for (int i = 1; i <= kSegments; ++i) { |
| 230 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 231 } |
| 232 EXPECT_EQ(kSegments, socket_->NumberOfBuffersFilled()); |
| 233 EXPECT_EQ(0u, socket_->Peek()); |
| 234 |
| 235 // Empty half of the ring buffer. |
| 236 int buffers_to_read = kSegments / 2; |
| 237 socket_->Read(buffers_to_read); |
| 238 EXPECT_EQ(kSegments - buffers_to_read, socket_->NumberOfBuffersFilled()); |
| 239 EXPECT_EQ(buffers_to_read * sizeof(uint32_t), socket_->Peek()); |
| 240 |
| 241 // Fill up again. The first write should do receive until that queue is |
| 242 // empty. |
| 243 for (int i = kSegments - buffers_to_read + 1; i <= kSegments; ++i) { |
| 244 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 245 EXPECT_EQ(i, socket_->NumberOfBuffersFilled()); |
| 246 EXPECT_EQ(0u, socket_->Peek()); |
| 247 } |
| 248 |
| 249 // Another write, should render and extra error log call. |
| 250 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 251 EXPECT_EQ(kSegments, socket_->NumberOfBuffersFilled()); |
| 252 EXPECT_EQ(0u, socket_->Peek()); |
| 253 |
| 254 // Empty the ring buffer. |
| 255 socket_->Read(kSegments); |
| 256 EXPECT_EQ(0, socket_->NumberOfBuffersFilled()); |
| 257 EXPECT_EQ(kSegments * sizeof(uint32_t), socket_->Peek()); |
| 258 |
| 259 // Another write, should do receive until that queue is empty. |
| 260 writer_->Write(audio_bus_.get(), 0, false, 0); |
| 261 EXPECT_EQ(1, socket_->NumberOfBuffersFilled()); |
| 262 EXPECT_EQ(0u, socket_->Peek()); |
| 263 } |
| 264 |
| 265 } // namespace content |
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