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/*
Copyright 2018 Google Inc. All Rights Reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS-IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#ifndef RESONANCE_AUDIO_UTILS_WAV_H_
#define RESONANCE_AUDIO_UTILS_WAV_H_
#include <cstdint>
#include <istream>
#include <memory>
#include <vector>
namespace vraudio {
// Wraps WavReader class to decode a wav file into memory.
class Wav {
public:
~Wav();
// Reads a RIFF WAVE from an opened binary stream.
static std::unique_ptr<const Wav> CreateOrNull(std::istream* binary_stream);
// Returns reference to interleaved samples.
const std::vector<int16_t>& interleaved_samples() const {
return interleaved_samples_;
}
// Returns number of channels.
size_t GetNumChannels() const { return num_channels_; }
// Returns sample rate.
int GetSampleRateHz() const { return sample_rate_; }
private:
// Private constructor used by static factory methods.
//
// @param num_channels Number of audio channels.
// @param sample_rate Sample rate.
// @param interleaved_samples Decoded interleaved samples.
Wav(size_t num_channels, int sample_rate,
std::vector<int16_t>&& interleaved_samples);
// Number of channels.
size_t num_channels_;
// Sample rate.
int sample_rate_;
// Interleaved samples.
std::vector<int16_t> interleaved_samples_;
};
} // namespace vraudio
#endif // RESONANCE_AUDIO_UTILS_WAV_H_