gecko/content/media/compiledtest/TestAudioBuffers.cpp

61 lines
1.7 KiB
C++

/* -*- 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 <stdint.h>
#include <assert.h>
#include <mozilla/NullPtr.h>
#include "AudioBufferUtils.h"
const uint32_t FRAMES = 256;
const uint32_t CHANNELS = 2;
const uint32_t SAMPLES = CHANNELS * FRAMES;
int main() {
mozilla::AudioCallbackBufferWrapper<float, CHANNELS> mBuffer;
mozilla::SpillBuffer<float, 128, CHANNELS> b;
float fromCallback[SAMPLES];
float other[SAMPLES];
for (uint32_t i = 0; i < SAMPLES; i++) {
other[i] = 1.0;
fromCallback[i] = 0.0;
}
// Set the buffer in the wrapper from the callback
mBuffer.SetBuffer(fromCallback, FRAMES);
// Fill the SpillBuffer with data.
assert(b.Fill(other, 15) == 15);
assert(b.Fill(other, 17) == 17);
for (uint32_t i = 0; i < 32 * CHANNELS; i++) {
other[i] = 0.0;
}
// Empty it in the AudioCallbackBufferWrapper
assert(b.Empty(mBuffer) == 32);
// Check available return something reasonnable
assert(mBuffer.Available() == FRAMES - 32);
// Fill the buffer with the rest of the data
mBuffer.WriteFrames(other + 32 * CHANNELS, FRAMES - 32);
// Check the buffer is now full
assert(mBuffer.Available() == 0);
for (uint32_t i = 0 ; i < SAMPLES; i++) {
if (fromCallback[i] != 1.0) {
fprintf(stderr, "Difference at %d (%f != %f)\n", i, fromCallback[i], 1.0);
assert(false);
}
}
assert(b.Fill(other, FRAMES) == 128);
assert(b.Fill(other, FRAMES) == 0);
assert(b.Empty(mBuffer) == 0);
return 0;
}