Merge "Vary tee sink frame count based on sample rate" into main

            // determine number of frames for Tee

            if (frames == 0) {

                // TODO: consider varying frame count based on type.

                frames = DEFAULT_TEE_FRAMES;

                frames = (static_cast<long long>(DEFAULT_TEE_DURATION_MS) * format.mSampleRate)

                            / MILLIS_PER_SECOND;

            }

            // TODO: should we check minimum number of frames?

        static NBAIO_SinkSource makeSinkSource(

                const NBAIO_Format &format, size_t frames, bool *enabled);

        // 0x200000 stereo 16-bit PCM frames = 47.5 seconds at 44.1 kHz, 8 megabytes

        static constexpr size_t DEFAULT_TEE_FRAMES = 0x200000;

        static constexpr size_t DEFAULT_TEE_DURATION_MS = 60'000;

        // atomic status checking

        std::atomic<bool> mEnabled{false};