/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MediaData.h"
#include "gtest/gtest.h"
using mozilla::AlignedFloatBuffer;
using mozilla::AudioDataValue;
using mozilla::FloatToAudioSample;
using mozilla::InflatableShortBuffer;
void FillSine(InflatableShortBuffer& aBuf, AlignedFloatBuffer& aFloatBuf) {
// Write a constant-pitch sine wave in both the integer and float buffers.
float phase =
0;
float phaseIncrement =
2 * M_PI *
440. /
44100.f;
for (uint32_t i =
0; i < aBuf.Length(); i++) {
aBuf.get()[i] = FloatToAudioSample<int16_t>(sin(phase));
aFloatBuf.get()[i] = sin(phase);
phase += phaseIncrement;
if (phase >=
2 * M_PI) {
phase -=
2 * M_PI;
}
}
}
TEST(InflatableAudioBuffer, Test)
{
for (uint32_t i =
1; i <
10000; i++) {
InflatableShortBuffer buf(i);
AlignedFloatBuffer bufFloat(i);
FillSine(buf, bufFloat);
AlignedFloatBuffer inflated = buf.Inflate();
for (uint32_t j =
0; j < buf.Length(); j++) {
// Accept a very small difference because floats are floored in the
// conversion to integer.
if (std::abs(bufFloat.get()[j] - inflated.get()[j]) *
32767. >
1.
0) {
fprintf(stderr,
"%f != %f (size: %u, index: %u)\n", bufFloat.get()[j],
inflated.get()[j], i, j);
ASSERT_TRUE(
false);
}
}
}
}
// namespace audio_mixer
