audio_resampler.h

#include <common/array.h>
#include <memory>

#pragma once

extern "C" {
#include <libavutil/samplefmt.h>
}

struct SwrContext;

namespace caspar::ffmpeg {

class AudioResampler
{
    std::shared_ptr<SwrContext> ctx;

  public:
    AudioResampler(int sample_rate, AVSampleFormat in_sample_fmt);

    AudioResampler(const AudioResampler&)            = delete;
    AudioResampler& operator=(const AudioResampler&) = delete;

    caspar::array<int32_t> convert(int frames, const void** src);
};

}; // namespace caspar::ffmpeg