Collapse AudioRendererMixer and OnMoreDataResampler into AudioTransform.

media/base/audio_pull_fifo_unittest.cc

 // Copyright (c) 2012 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/bind.h"
 #include "base/bind_helpers.h"
 #include "base/stringprintf.h"
 #include "media/base/audio_pull_fifo.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 11 matching lines @@
 // Max number of audio framed the FIFO can contain.
 static const int kMaxFramesInFifo = 2048;
 
 class AudioPullFifoTest
     : public testing::TestWithParam<int> {
  public:
   AudioPullFifoTest()
     : pull_fifo_(kChannels, kMaxFramesInFifo, base::Bind(
           &AudioPullFifoTest::ProvideInput, base::Unretained(this))),
       audio_bus_(AudioBus::Create(kChannels, kMaxFramesInFifo)),
-      fill_value_(0) {}
+      fill_value_(0),
+      last_frame_delay_(-1) {}
   virtual ~AudioPullFifoTest() {}
 
   void VerifyValue(const float data[], int size, float start_value) {
     float value = start_value;
     for (int i = 0; i < size; ++i) {
       ASSERT_FLOAT_EQ(value++, data[i]) << "i=" << i;
     }
   }
 
   // Consume data using different sizes, acquire audio frames from the FIFO
   // and verify that the retrieved values matches the values written by the
   // producer.
   void ConsumeTest(int frames_to_consume) {
     int start_value = 0;
     SCOPED_TRACE(base::StringPrintf("Checking frames_to_consume %d",
                  frames_to_consume));
     pull_fifo_.Consume(audio_bus_.get(), frames_to_consume);
     for (int j = 0; j < kChannels; ++j) {
       VerifyValue(audio_bus_->channel(j), frames_to_consume, start_value);
     }
     start_value += frames_to_consume;
+    EXPECT_LT(last_frame_delay_, audio_bus_->frames());
   }
 
   // AudioPullFifo::ReadCB implementation where we increase a value for each
   // audio frame that we provide. Note that all channels are given the same
   // value to simplify the verification.
-  virtual void ProvideInput(AudioBus* audio_bus) {
+  virtual void ProvideInput(int frame_delay, AudioBus* audio_bus) {
+    ASSERT_GT(frame_delay, last_frame_delay_);
+    last_frame_delay_ = frame_delay;
+
     EXPECT_EQ(audio_bus->channels(), audio_bus_->channels());
     EXPECT_EQ(audio_bus->frames(), kMaxFramesInFifo);
     for (int i = 0; i < audio_bus->frames(); ++i) {
       for (int j = 0; j < audio_bus->channels(); ++j) {
         // Store same value in all channels.
         audio_bus->channel(j)[i] = fill_value_;
       }
       fill_value_++;
     }
   }
 
  protected:
   AudioPullFifo pull_fifo_;
   scoped_ptr<AudioBus> audio_bus_;
   int fill_value_;
+  int last_frame_delay_;
 
   DISALLOW_COPY_AND_ASSIGN(AudioPullFifoTest);
 };
 
 TEST_P(AudioPullFifoTest, Consume) {
   ConsumeTest(GetParam());
 }
 
 // Test common |frames_to_consume| values which will be used as input
 // parameter to AudioPullFifo::Consume() when the consumer asks for data.
 INSTANTIATE_TEST_CASE_P(
     AudioPullFifoTest, AudioPullFifoTest,
     testing::Values(544, 512, 512, 512, 512, 2048, 544, 441, 440, 433, 500));
 
 }  // namespace media