dom/media/gtest/TestAudioCompactor.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 #include "gtest/gtest.h"
   7 #include "AudioCompactor.h"
   8 #include "nsDeque.h"
   9 #include "nsIMemoryReporter.h"
  10
  11 using mozilla::AudioCompactor;
  12 using mozilla::AudioData;
  13 using mozilla::AudioDataValue;
  14 using mozilla::MediaQueue;
  15
  16 class MemoryFunctor : public nsDequeFunctor<AudioData> {
  17  public:
  18   MemoryFunctor() : mSize(0) {}
  19   MOZ_DEFINE_MALLOC_SIZE_OF(MallocSizeOf);
  20
  21   void operator()(AudioData* aObject) override {
  22     mSize += aObject->SizeOfIncludingThis(MallocSizeOf);
  23   }
  24
  25   size_t mSize;
  26 };
  27
  28 class TestCopy {
  29  public:
  30   TestCopy(uint32_t aFrames, uint32_t aChannels, uint32_t& aCallCount,
  31            uint32_t& aFrameCount)
  32       : mFrames(aFrames),
  33         mChannels(aChannels),
  34         mCallCount(aCallCount),
  35         mFrameCount(aFrameCount) {}
  36
  37   uint32_t operator()(AudioDataValue* aBuffer, uint32_t aSamples) {
  38     mCallCount += 1;
  39     uint32_t frames = std::min(mFrames - mFrameCount, aSamples / mChannels);
  40     mFrameCount += frames;
  41     return frames;
  42   }
  43
  44  private:
  45   const uint32_t mFrames;
  46   const uint32_t mChannels;
  47   uint32_t& mCallCount;
  48   uint32_t& mFrameCount;
  49 };
  50
  51 static void TestAudioCompactor(size_t aBytes) {
  52   MediaQueue<AudioData> queue;
  53   AudioCompactor compactor(queue);
  54
  55   uint64_t offset = 0;
  56   uint64_t time = 0;
  57   uint32_t sampleRate = 44000;
  58   uint32_t channels = 2;
  59   uint32_t frames = aBytes / (channels * sizeof(AudioDataValue));
  60   size_t maxSlop = aBytes / AudioCompactor::MAX_SLOP_DIVISOR;
  61
  62   uint32_t callCount = 0;
  63   uint32_t frameCount = 0;
  64
  65   compactor.Push(offset, time, sampleRate, frames, channels,
  66                  TestCopy(frames, channels, callCount, frameCount));
  67
  68   EXPECT_GT(callCount, 0U) << "copy functor never called";
  69   EXPECT_EQ(frames, frameCount) << "incorrect number of frames copied";
  70
  71   MemoryFunctor memoryFunc;
  72   queue.LockedForEach(memoryFunc);
  73   size_t allocSize = memoryFunc.mSize - (callCount * sizeof(AudioData));
  74   size_t slop = allocSize - aBytes;
  75   EXPECT_LE(slop, maxSlop) << "allowed too much allocation slop";
  76 }
  77
  78 TEST(Media, AudioCompactor_4000)
  79 { TestAudioCompactor(4000); }
  80
  81 TEST(Media, AudioCompactor_4096)
  82 { TestAudioCompactor(4096); }
  83
  84 TEST(Media, AudioCompactor_5000)
  85 { TestAudioCompactor(5000); }
  86
  87 TEST(Media, AudioCompactor_5256)
  88 { TestAudioCompactor(5256); }
  89
  90 TEST(Media, AudioCompactor_NativeCopy)
  91 {
  92   const uint32_t channels = 2;
  93   const size_t srcBytes = 32;
  94   const uint32_t srcSamples = srcBytes / sizeof(AudioDataValue);
  95   const uint32_t srcFrames = srcSamples / channels;
  96   uint8_t src[srcBytes];
  97
  98   for (uint32_t i = 0; i < srcBytes; ++i) {
  99     src[i] = i;
 100   }
 101
 102   AudioCompactor::NativeCopy copy(src, srcBytes, channels);
 103
 104   const uint32_t dstSamples = srcSamples * 2;
 105   AudioDataValue dst[dstSamples];
 106
 107   const AudioDataValue notCopied = 0xffff;
 108   for (uint32_t i = 0; i < dstSamples; ++i) {
 109     dst[i] = notCopied;
 110   }
 111
 112   const uint32_t copyCount = 8;
 113   uint32_t copiedFrames = 0;
 114   uint32_t nextSample = 0;
 115   for (uint32_t i = 0; i < copyCount; ++i) {
 116     uint32_t copySamples = dstSamples / copyCount;
 117     copiedFrames += copy(dst + nextSample, copySamples);
 118     nextSample += copySamples;
 119   }
 120
 121   EXPECT_EQ(srcFrames, copiedFrames) << "copy exact number of source frames";
 122
 123   // Verify that the only the correct bytes were copied.
 124   for (uint32_t i = 0; i < dstSamples; ++i) {
 125     if (i < srcSamples) {
 126       EXPECT_NE(notCopied, dst[i]) << "should have copied over these bytes";
 127     } else {
 128       EXPECT_EQ(notCopied, dst[i]) << "should not have copied over these bytes";
 129     }
 130   }
 131 }