Adding input and output delay estimation for mac.

media/audio/mac/audio_low_latency_input_mac_unittest.cc

 // Copyright (c) 2011 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.
 
 #include "base/basictypes.h"
 #include "base/environment.h"
 #include "base/test/test_timeouts.h"
 #include "base/threading/platform_thread.h"
 #include "media/audio/audio_io.h"
 #include "media/audio/audio_manager.h"
 #include "media/audio/mac/audio_low_latency_input_mac.h"
 #include "media/base/seekable_buffer.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+using ::testing::_;
 using ::testing::AnyNumber;
 using ::testing::Between;
+using ::testing::Ge;
 using ::testing::NotNull;
 
 class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
  public:
   MOCK_METHOD4(OnData, void(AudioInputStream* stream,
                             const uint8* src, uint32 size,
                             uint32 hardware_delay_bytes));
   MOCK_METHOD1(OnClose, void(AudioInputStream* stream));
   MOCK_METHOD2(OnError, void(AudioInputStream* stream, int code));
 };
@@ skipping 180 matching lines @@
   int samples_per_packet = fs / 100;
   int bits_per_sample = 16;
   uint32 bytes_per_packet = samples_per_packet * (bits_per_sample / 8);
 
   MockAudioInputCallback sink;
 
   // We use 10ms packets and will run the test for ~100ms. Given that the
   // startup sequence takes some time, it is reasonable to expect 5-10
   // callbacks in this time period. All should contain valid packets of
   // the same size.
-  EXPECT_CALL(sink, OnData(ais, NotNull(), bytes_per_packet, bytes_per_packet))
+  EXPECT_CALL(sink, OnData(ais, NotNull(), bytes_per_packet,
+                           Ge(bytes_per_packet)))
       .Times(Between(5, 10));
 
   ais->Start(&sink);
   base::PlatformThread::Sleep(TestTimeouts::tiny_timeout_ms());
   ais->Stop();
 
   // Verify that the sink receieves OnClose() call when calling Close().
   EXPECT_CALL(sink, OnClose(ais))
       .Times(1);
   ais->Close();
@@ skipping 12 matching lines @@
   int samples_per_packet = fs / 100;
   int bits_per_sample = 16;
   uint32 bytes_per_packet = 2 * samples_per_packet * (bits_per_sample / 8);
 
   MockAudioInputCallback sink;
 
   // We use 10ms packets and will run the test for ~100ms. Given that the
   // startup sequence takes some time, it is reasonable to expect 5-10
   // callbacks in this time period. All should contain valid packets of
   // the same size.
-  EXPECT_CALL(sink, OnData(ais, NotNull(), bytes_per_packet, bytes_per_packet))
+  EXPECT_CALL(sink, OnData(ais, NotNull(), bytes_per_packet,
+                           Ge(bytes_per_packet)))
       .Times(Between(5, 10));
 
   ais->Start(&sink);
   base::PlatformThread::Sleep(TestTimeouts::tiny_timeout_ms());
   ais->Stop();
 
   // Verify that the sink receieves OnClose() call when calling Close().
   EXPECT_CALL(sink, OnClose(ais))
       .Times(1);
   ais->Close();
@@ skipping 18 matching lines @@
   fprintf(stderr, "               Sample rate: %d\n", fs);
   WriteToFileAudioSink file_sink(file_name);
   fprintf(stderr, "               >> Speak into the mic while recording...\n");
   ais->Start(&file_sink);
   base::PlatformThread::Sleep(TestTimeouts::action_timeout_ms());
   ais->Stop();
   fprintf(stderr, "               >> Recording has stopped.\n");
   ais->Close();
 }