use approx::assert_relative_eq;
use pacmog::{
    imaadpcm::{ImaAdpcmPlayer, I1F15},
    AudioFormat, PcmPlayer, PcmReader,
};

const SINEWAVE: [f32; 3000] = [
    0f32,
    0.05130394f32,
    0.10243774f32,
    0.15323183f32,
    0.20351772f32,
    0.2531287f32,
    0.3019002f32,
    0.34967047f32,
    0.39628112f32,
    0.44157755f32,
    0.4854096f32,
    0.52763176f32,
    0.56810415f32,
    0.6066925f32,
    0.6432688f32,
    0.67771184f32,
    0.7099073f32,
    0.7397485f32,
    0.7671364f32,
    0.79198015f32,
    0.8141974f32,
    0.83371454f32,
    0.8504667f32,
    0.8643985f32,
    0.87546355f32,
    0.8836253f32,
    0.88885653f32,
    0.8911401f32,
    0.8904683f32,
    0.8868433f32,
    0.8802773f32,
    0.8707919f32,
    0.85841864f32,
    0.8431986f32,
    0.8251822f32,
    0.8044292f32,
    0.78100836f32,
    0.75499743f32,
    0.7264827f32,
    0.69555867f32,
    0.6623278f32,
    0.62690055f32,
    0.5893942f32,
    0.54993325f32,
    0.5086485f32,
    0.46567684f32,
    0.4211609f32,
    0.3752482f32,
    0.32809103f32,
    0.2798458f32,
    0.23067248f32,
    0.18073419f32,
    0.13019651f32,
    0.07922705f32,
    0.02799484f32,
    -0.023330206f32,
    -0.07457788f32,
    -0.12557824f32,
    -0.17616212f32,
    -0.2261618f32,
    -0.27541143f32,
    -0.3237477f32,
    -0.3710103f32,
    -0.41704246f32,
    -0.4616916f32,
    -0.5048096f32,
    -0.54625344f32,
    -0.5858857f32,
    -0.623575f32,
    -0.65919626f32,
    -0.6926314f32,
    -0.7237695f32,
    -0.7525073f32,
    -0.7787495f32,
    -0.8024091f32,
    -0.82340765f32,
    -0.84167546f32,
    -0.857152f32,
    -0.86978585f32,
    -0.87953526f32,
    -0.8863677f32,
    -0.89026064f32,
    -0.8912012f32,
    -0.8891862f32,
    -0.88422227f32,
    -0.87632596f32,
    -0.8655235f32,
    -0.85185057f32,
    -0.8353526f32,
    -0.8160843f32,
    -0.7941096f32,
    -0.7695013f32,
    -0.7423411f32,
    -0.71271896f32,
    -0.68073326f32,
    -0.64649f32,
    -0.61010265f32,
    -0.571692f32,
    -0.5313855f32,
    -0.48931658f32,
    -0.44562504f32,
    -0.4004556f32,
    -0.35395807f32,
    -0.30628672f32,
    -0.25759962f32,
    -0.2080582f32,
    -0.15782678f32,
    -0.107071966f32,
    -0.055962056f32,
    -0.0046665533f32,
    0.046644423f32,
    0.09780071f32,
    0.14863265f32,
    0.19897167f32,
    0.24865083f32,
    0.29750538f32,
    0.34537327f32,
    0.3920958f32,
    0.437518f32,
    0.48148924f32,
    0.5238636f32,
    0.56450075f32,
    0.6032657f32,
    0.6400301f32,
    0.6746719f32,
    0.7070762f32,
    0.7371356f32,
    0.76475036f32,
    0.789829f32,
    0.8122882f32,
    0.8320536f32,
    0.8490596f32,
    0.8632498f32,
    0.87457716f32,
    0.88300407f32,
    0.8885026f32,
    0.8910546f32,
    0.89065146f32,
    0.88729465f32,
    0.8809952f32,
    0.87177414f32,
    0.8596618f32,
    0.8446986f32,
    0.8269341f32,
    0.8064272f32,
    0.7832458f32,
    0.7574669f32,
    0.729176f32,
    0.69846684f32,
    0.66544133f32,
    0.63020897f32,
    0.59288657f32,
    0.553598f32,
    0.51247346f32,
    0.46964937f32,
    0.42526776f32,
    0.3794758f32,
    0.3324254f32,
    0.2842725f32,
    0.23517686f32,
    0.1853013f32,
    0.13481122f32,
    0.08387404f32,
    0.032658707f32,
    -0.018664932f32,
    -0.06992668f32,
    -0.12095651f32,
    -0.1715852f32,
    -0.22164488f32,
    -0.27096948f32,
    -0.31939545f32,
    -0.3667622f32,
    -0.4129126f32,
    -0.4576937f32,
    -0.50095683f32,
    -0.54255867f32,
    -0.58236116f32,
    -0.6202323f32,
    -0.65604657f32,
    -0.6896851f32,
    -0.72103643f32,
    -0.74999654f32,
    -0.77646935f32,
    -0.8003671f32,
    -0.82161057f32,
    -0.84012926f32,
    -0.85586184f32,
    -0.86875594f32,
    -0.878769f32,
    -0.8858678f32,
    -0.8900286f32,
    -0.89123785f32,
    -0.8894914f32,
    -0.884795f32,
    -0.87716436f32,
    -0.8666247f32,
    -0.85321105f32,
    -0.83696777f32,
    -0.8179489f32,
    -0.7962173f32,
    -0.77184516f32,
    -0.7449134f32,
    -0.7155111f32,
    -0.68373597f32,
    -0.6496933f32,
    -0.613496f32,
    -0.5752642f32,
    -0.53512454f32,
    -0.49321026f32,
    -0.44966027f32,
    -0.40461904f32,
    -0.35823596f32,
    -0.31066486f32,
    -0.26206344f32,
    -0.21259294f32,
    -0.16241743f32,
    -0.111703254f32,
    -0.06061863f32,
    -0.009332978f32,
    0.041983627f32,
    0.093161f32,
    0.14402941f32,
    0.19442017f32,
    0.24416617f32,
    0.2931024f32,
    0.34106663f32,
    0.38789973f32,
    0.4334464f32,
    0.47755566f32,
    0.52008116f32,
    0.5608818f32,
    0.5998224f32,
    0.63677377f32,
    0.6716134f32,
    0.70422566f32,
    0.7345025f32,
    0.76234347f32,
    0.7876562f32,
    0.81035674f32,
    0.83036983f32,
    0.8476292f32,
    0.8620774f32,
    0.8736667f32,
    0.8823587f32,
    0.8881243f32,
    0.89094466f32,
    0.89081025f32,
    0.88772166f32,
    0.881689f32,
    0.8727324f32,
    0.86088145f32,
    0.8461755f32,
    0.82866335f32,
    0.808403f32,
    0.7854617f32,
    0.7599156f32,
    0.7318493f32,
    0.7013559f32,
    0.6685365f32,
    0.63350004f32,
    0.5963627f32,
    0.5572475f32,
    0.51628435f32,
    0.47360903f32,
    0.42936298f32,
    0.38369304f32,
    0.33675063f32,
    0.2886914f32,
    0.2396748f32,
    0.18986334f32,
    0.13942222f32,
    0.08851873f32,
    0.03732168f32,
    -0.013999147f32,
    -0.065273546f32,
    -0.116331466f32,
    -0.1670036f32,
    -0.2171219f32,
    -0.2665201f32,
    -0.31503448f32,
    -0.36250407f32,
    -0.40877143f32,
    -0.4536832f32,
    -0.49709034f32,
    -0.538849f32,
    -0.5788206f32,
    -0.61687267f32,
    -0.6528789f32,
    -0.68671995f32,
    -0.71828365f32,
    -0.7474652f32,
    -0.7741679f32,
    -0.7983032f32,
    -0.81979096f32,
    -0.83856004f32,
    -0.85454816f32,
    -0.86770225f32,
    -0.87797874f32,
    -0.8853435f32,
    -0.8897722f32,
    -0.8912501f32,
    -0.8897722f32,
    -0.8853435f32,
    -0.87797874f32,
    -0.86770225f32,
    -0.85454816f32,
    -0.83856004f32,
    -0.81979096f32,
    -0.7983032f32,
    -0.7741679f32,
    -0.7474652f32,
    -0.71828365f32,
    -0.68671995f32,
    -0.6528789f32,
    -0.61687267f32,
    -0.5788206f32,
    -0.538849f32,
    -0.49709034f32,
    -0.4536832f32,
    -0.40877143f32,
    -0.36250407f32,
    -0.31503448f32,
    -0.2665201f32,
    -0.2171219f32,
    -0.1670036f32,
    -0.116331466f32,
    -0.065273546f32,
    -0.013999147f32,
    0.03732168f32,
    0.08851873f32,
    0.13942222f32,
    0.18986334f32,
    0.2396748f32,
    0.2886914f32,
    0.33675063f32,
    0.38369304f32,
    0.42936298f32,
    0.47360903f32,
    0.51628435f32,
    0.5572475f32,
    0.5963627f32,
    0.63350004f32,
    0.6685365f32,
    0.7013559f32,
    0.7318493f32,
    0.7599156f32,
    0.7854617f32,
    0.808403f32,
    0.82866335f32,
    0.8461755f32,
    0.86088145f32,
    0.8727324f32,
    0.881689f32,
    0.88772166f32,
    0.89081025f32,
    0.89094466f32,
    0.8881243f32,
    0.8823587f32,
    0.8736667f32,
    0.8620774f32,
    0.8476292f32,
    0.83036983f32,
    0.81035674f32,
    0.7876562f32,
    0.76234347f32,
    0.7345025f32,
    0.70422566f32,
    0.6716134f32,
    0.63677377f32,
    0.5998224f32,
    0.5608818f32,
    0.52008116f32,
    0.47755566f32,
    0.4334464f32,
    0.38789973f32,
    0.34106663f32,
    0.2931024f32,
    0.24416617f32,
    0.19442017f32,
    0.14402941f32,
    0.093161f32,
    0.041983627f32,
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    -0.018664932f32,
    0.032658707f32,
    0.08387404f32,
    0.13481122f32,
    0.1853013f32,
    0.23517686f32,
    0.2842725f32,
    0.3324254f32,
    0.3794758f32,
    0.42526776f32,
    0.46964937f32,
    0.51247346f32,
    0.553598f32,
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    0.63020897f32,
    0.66544133f32,
    0.69846684f32,
    0.729176f32,
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    0.7832458f32,
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    0.17616212f32,
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    0.3710103f32,
    0.41704246f32,
    0.4616916f32,
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    0.54625344f32,
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    0.623575f32,
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    0.6926314f32,
    0.7237695f32,
    0.7525073f32,
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    0.7941096f32,
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/// Decode the given wave file using Symphonia and return the decoded samples.
///
/// # Arguments
/// * `data` - The wave file data
///
/// # Returns
/// * A tuple of the decoded samples, sample rate and number of channels
///
fn decode_with_symphonia(data: &'static [u8]) -> (Vec<f32>, u32, usize) {
    use std::io::Cursor;
    use symphonia::core::audio::SampleBuffer;
    use symphonia::core::codecs::DecoderOptions;
    use symphonia::core::errors::Error;
    use symphonia::core::formats::FormatOptions;
    use symphonia::core::io::MediaSourceStream;
    use symphonia::core::meta::MetadataOptions;
    use symphonia::default::get_probe;

    // Decode using Symphonia
    let mss = MediaSourceStream::new(Box::new(Cursor::new(data)), Default::default());
    let probed = get_probe()
        .format(
            &Default::default(),
            mss,
            &FormatOptions::default(),
            &MetadataOptions::default(),
        )
        .expect("Failed to probe format");
    let mut format = probed.format;

    let track = format
        .tracks()
        .iter()
        .find(|t| t.codec_params.codec != symphonia::core::codecs::CODEC_TYPE_NULL)
        .expect("no supported track found");
    let dec_opts: DecoderOptions = Default::default();

    let mut decoder = symphonia::default::get_codecs()
        .make(&track.codec_params, &dec_opts)
        .expect("unsupported codec");

    let track_id = track.id;
    let mut sample_buf = None;
    let mut symphonia_decoded_samples = Vec::<f32>::new();
    let mut sample_rate = None;
    let mut num_channels = None;
    loop {
        let Ok(packet) = format.next_packet() else {
            break;
        };

        // Consume any new metadata that has been read since the last packet.
        while !format.metadata().is_latest() {
            // Pop the old head of the metadata queue.
            format.metadata().pop();

            // Consume the new metadata at the head of the metadata queue.
        }

        // If the packet does not belong to the selected track, skip over it.
        if packet.track_id() != track_id {
            continue;
        }

        // Decode the packet into audio samples.
        match decoder.decode(&packet) {
            Ok(decoded) => {
                // Consume the decoded audio samples (see below).
                if sample_buf.is_none() {
                    let spec = *decoded.spec();
                    sample_rate = Some(spec.rate);
                    num_channels = Some(spec.channels.count());
                    let duration = decoded.capacity();
                    sample_buf = Some(SampleBuffer::<f32>::new(duration as u64, spec));
                }

                if let Some(buf) = &mut sample_buf {
                    buf.copy_interleaved_ref(decoded);
                    for e in buf.samples().iter() {
                        symphonia_decoded_samples.push(*e);
                    }
                }
            }
            Err(Error::IoError(_)) => {
                // The packet failed to decode due to an IO error, skip the packet.
                continue;
            }
            Err(Error::DecodeError(_)) => {
                // The packet failed to decode due to invalid data, skip the packet.
                continue;
            }
            Err(err) => {
                // An unrecoverable error occurred, halt decoding.
                panic!("{}", err);
            }
        }
    }
    (
        symphonia_decoded_samples,
        sample_rate.unwrap(),
        num_channels.unwrap(),
    )
}

#[test]
fn wav_specs() {
    let wav = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_16.wav");
    let mut reader = PcmReader::new(wav).unwrap();
    // 1ch 48kHz 16bit
    {
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 16);
        assert_eq!(spec.audio_format, AudioFormat::LinearPcmLe);
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 24bit
    {
        let wav = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_24.wav");
        reader.reload(wav).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 24);
        assert_eq!(spec.audio_format, AudioFormat::LinearPcmLe);
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 32bit
    {
        let wav = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32.wav");
        reader.reload(wav).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 32);
        assert_eq!(spec.audio_format, AudioFormat::LinearPcmLe);
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 32bit float
    {
        let wav = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32FP.wav");
        reader.reload(wav).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 32);
        assert_eq!(spec.audio_format, AudioFormat::IeeeFloatLe); // Little endian
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 64bit float
    {
        let wav = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_64FP.wav");
        reader.reload(wav).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 64);
        assert_eq!(spec.audio_format, AudioFormat::IeeeFloatLe); // Little endian
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 22.05kHz 16bit
    {
        let wav = include_bytes!("./resources/MLKDream.wav"); // https://archive.org/details/MLKDream
        reader.reload(wav).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 16);
        assert_eq!(spec.audio_format, AudioFormat::LinearPcmLe); // Little endian
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 22050);
        assert_eq!(spec.num_samples, 21_772_800);
    }
}

#[test]
fn aiff_specs() {
    let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_16.aif");
    let mut reader = PcmReader::new(data).unwrap();
    // 1ch 48kHz 16bit
    {
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 16);
        assert_eq!(spec.audio_format, AudioFormat::LinearPcmBe); //Big endian
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 24bit
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_24.aif");
        reader.reload(data).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 24);
        assert_eq!(spec.audio_format, AudioFormat::LinearPcmBe);
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 32bit
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32.aif");
        reader.reload(data).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 32);
        assert_eq!(spec.audio_format, AudioFormat::LinearPcmBe);
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 32bit float
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32FP.aif");
        reader.reload(data).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 32);
        assert_eq!(spec.audio_format, AudioFormat::IeeeFloatBe);
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }

    // 1ch 48kHz 64bit float
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_64FP.aif");
        reader.reload(data).unwrap();
        let spec = reader.get_pcm_specs();
        assert_eq!(spec.bit_depth, 64);
        assert_eq!(spec.audio_format, AudioFormat::IeeeFloatBe);
        assert_eq!(spec.num_channels, 1);
        assert_eq!(spec.sample_rate, 48000);
        assert_eq!(spec.num_samples, 240000);
    }
}

#[test]
fn wav_compare_with_symphonia() {
    let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_16.wav");
    let mut reader = PcmReader::new(data).unwrap();

    // 1ch 48kHz 16bit
    {
        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    // 1ch 48kHz 24bit
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_24.wav");
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    // 1ch 48kHz 32bit
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32.wav");
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    // 1ch 48kHz 32bit float
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32FP.wav");
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    // 1ch 48kHz 64bit float
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_64FP.wav");
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    {
        let data = include_bytes!("./resources/MLKDream.wav"); // https://archive.org/details/MLKDream
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    {
        let data = include_bytes!("./resources/Tank_Low17.wav");
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }
}

#[test]
fn aiff_compare_with_symphonia() {
    let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_16.aif");
    let mut reader = PcmReader::new(data).unwrap();

    // 1ch 48kHz 16bit
    {
        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    // 1ch 48kHz 24bit
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_24.aif");
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    // 1ch 48kHz 32bit
    {
        let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32.aif");
        reader.reload(data).unwrap();

        let spec = reader.get_pcm_specs();
        let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
        assert_eq!(spec.sample_rate, sample_rate);
        assert_eq!(spec.num_channels as usize, num_channels);
        let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
        assert_eq!(symphonia_buf.len(), num_total_samples);

        for samp in 0..spec.num_samples as usize {
            for ch in 0..num_channels {
                let sample = reader.read_sample(ch as u16, samp as u32).unwrap();
                assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
            }
        }
    }

    // TODO symphonia does not support 32bit float AIFF

    // // 1ch 48kHz 32bit float
    // {
    //     let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32FP.aif");
    //     reader.reload(data).unwrap();

    //     let spec = reader.get_pcm_specs();
    //     let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
    //     assert_eq!(spec.sample_rate, sample_rate);
    //     assert_eq!(spec.num_channels as usize, num_channels);
    //     let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
    //     assert_eq!(symphonia_buf.len(), num_total_samples);

    //     for samp in 0..spec.num_samples as usize {
    //         for ch in 0..num_channels {
    //             let sample = reader.read_sample(ch as u32, samp as u32).unwrap();
    //             assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
    //         }
    //     }
    // }

    // // 1ch 48kHz 64bit float
    // {
    //     let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_64FP.aif");
    //     reader.reload(data).unwrap();

    //     let spec = reader.get_pcm_specs();
    //     let (symphonia_buf, sample_rate, num_channels) = decode_with_symphonia(data);
    //     assert_eq!(spec.sample_rate, sample_rate);
    //     assert_eq!(spec.num_channels as usize, num_channels);
    //     let num_total_samples = spec.num_channels as usize * spec.num_samples as usize;
    //     assert_eq!(symphonia_buf.len(), num_total_samples);

    //     for samp in 0..spec.num_samples as usize {
    //         for ch in 0..num_channels {
    //             let sample = reader.read_sample(ch as u32, samp as u32).unwrap();
    //             assert_relative_eq!(sample, symphonia_buf[samp * num_channels + ch]);
    //         }
    //     }
    // }
}

// TODO SymphoniaがAIFF 32bit floatをサポートしたら比較テストに置き換える
#[test]
fn aiff_32bit_float() {
    let aiff = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32FP.aif");
    let reader = PcmReader::new(aiff).unwrap();
    let spec = reader.get_pcm_specs();
    assert_eq!(spec.num_samples, 240000);
    assert_eq!(spec.sample_rate, 48000);
    assert_eq!(spec.num_channels, 1);
    assert_eq!(spec.audio_format, AudioFormat::IeeeFloatBe);
    assert_eq!(spec.bit_depth, 32);

    for i in 0..SINEWAVE.len() as u32 {
        let sample = reader.read_sample(0, i).unwrap();
        assert_relative_eq!(sample, SINEWAVE[i as usize]);
    }
}

// TODO SymphoniaがAIFF 64bit floatをサポートしたら比較テストに置き換える
#[test]
fn aiff_64bit_float() {
    let aiff = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_64FP.aif");
    let reader = PcmReader::new(aiff).unwrap();
    let spec = reader.get_pcm_specs();
    assert_eq!(spec.num_samples, 240000);
    assert_eq!(spec.sample_rate, 48000);
    assert_eq!(spec.num_channels, 1);
    assert_eq!(spec.audio_format, AudioFormat::IeeeFloatBe);
    assert_eq!(spec.bit_depth, 64);

    for i in 0..SINEWAVE.len() as u32 {
        let sample = reader.read_sample(0, i).unwrap();
        assert_relative_eq!(sample, SINEWAVE[i as usize]);
    }
}

#[test]
fn wav_player_32bit() {
    let wav = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_32.wav");
    let reader = PcmReader::new(wav).unwrap();
    let mut player = PcmPlayer::new(reader);
    let spec = player.reader.get_pcm_specs();
    player.set_position(0).unwrap();
    player.set_loop_playing(false);
    let mut buffer: [f32; 2] = [0f32, 0f32];
    let b = buffer.as_mut_slice();

    // test first 10 samples
    for i in 0..10 {
        if player.get_next_frame(b).is_ok() {
            assert_relative_eq!(b[0], SINEWAVE[i as usize]);
        }
    }

    // set_positionが正しいかをtest
    player.set_position(0).unwrap();
    for i in 0..10 {
        if player.get_next_frame(b).is_ok() {
            assert_relative_eq!(b[0], SINEWAVE[i as usize]);
        }
    }

    player.set_position(0).unwrap();
    //末尾まで再生
    for _ in 0..spec.num_samples {
        player.get_next_frame(b).unwrap();
    }

    // 末尾まで再生した後は正しくErrを返すかをテスト
    for _ in 0..10 {
        let e = player.get_next_frame(b);
        match e {
            Ok(_) => unreachable!(),
            Err(_) => continue,
        }
    }

    player.set_loop_playing(true);
    player.set_position(0).unwrap();
    // 末尾まで再生
    for _ in 0..spec.num_samples {
        player.get_next_frame(b).unwrap();
    }

    // ループ再生が正しく機能するかをtest
    for i in 0..10 {
        if player.get_next_frame(b).is_ok() {
            assert_relative_eq!(b[0], SINEWAVE[i as usize]);
        }
    }
}

#[test]
fn ima_adpcm_4bit() {
    let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_4bit_IMAADPCM.wav");
    let mut player = ImaAdpcmPlayer::new(data);
    let spec = player.reader.get_pcm_specs();
    assert_eq!(spec.num_samples, 240838);
    assert_eq!(spec.sample_rate, 48000);
    assert_eq!(spec.num_channels, 1);
    assert_eq!(spec.audio_format, AudioFormat::ImaAdpcmLe);
    assert_eq!(spec.bit_depth, 4);

    let mut buffer: [I1F15; 2] = [I1F15::ZERO, I1F15::ZERO];
    let buf = buffer.as_mut_slice();

    for i in 0..10 {
        player.get_next_frame(buf).unwrap();
        let s = buf[0].to_num::<f32>();
        assert_relative_eq!(s, SINEWAVE[i as usize], epsilon = 0.3f32);
    }
}
#[test]
fn ima_adpcm_4bit_play_to_end() {
    let data = include_bytes!("./resources/Sine440Hz_1ch_48000Hz_4bit_IMAADPCM.wav");
    let mut player = ImaAdpcmPlayer::new(data);
    let spec = player.reader.get_pcm_specs();
    assert_eq!(spec.num_samples, 240838);
    assert_eq!(spec.sample_rate, 48000);
    assert_eq!(spec.num_channels, 1);
    assert_eq!(spec.audio_format, AudioFormat::ImaAdpcmLe);
    assert_eq!(spec.bit_depth, 4);

    let mut buffer: [I1F15; 2] = [I1F15::ZERO, I1F15::ZERO];
    let buf = buffer.as_mut_slice();

    // Play to the end
    for _ in 0..spec.num_samples {
        player.get_next_frame(buf).unwrap();
    }

    //Error
    let e = player.get_next_frame(buf);
    assert!(e.is_err());

    //再生位置を先頭に戻す
    player.rewind();

    // Play to the end
    for _ in 0..spec.num_samples {
        player.get_next_frame(buf).unwrap();
    }

    //Error
    let e = player.get_next_frame(buf);
    assert!(e.is_err());
}

#[test]
fn ima_adpcm_4bit_2ch() {
    let data = include_bytes!("./resources/Sine440Hz_2ch_48000Hz_4bit_IMAADPCM.wav");
    let mut player = ImaAdpcmPlayer::new(data);
    let spec = player.reader.get_pcm_specs();
    assert_eq!(spec.num_samples, 240838);
    assert_eq!(spec.sample_rate, 48000);
    assert_eq!(spec.num_channels, 2);
    assert_eq!(spec.audio_format, AudioFormat::ImaAdpcmLe);
    assert_eq!(spec.bit_depth, 4);

    let mut buffer: [I1F15; 2] = [I1F15::ZERO, I1F15::ZERO];
    let buf = buffer.as_mut_slice();

    for i in 0..SINEWAVE.len() as u32 {
        player.get_next_frame(buf).unwrap();
        let l = buf[0].to_num::<f32>();
        let r = buf[1].to_num::<f32>();
        assert_relative_eq!(l, SINEWAVE[i as usize], epsilon = 0.3f32);
        assert_relative_eq!(r, SINEWAVE[i as usize], epsilon = 0.3f32);
    }
}

#[test]
fn ima_adpcm_4bit_2ch_play_to_end() {
    let data = include_bytes!("./resources/Sine440Hz_2ch_48000Hz_4bit_IMAADPCM.wav");
    let mut player = ImaAdpcmPlayer::new(data);
    let spec = player.reader.get_pcm_specs();
    assert_eq!(spec.num_samples, 240838);
    assert_eq!(spec.sample_rate, 48000);
    assert_eq!(spec.num_channels, 2);
    assert_eq!(spec.audio_format, AudioFormat::ImaAdpcmLe);
    assert_eq!(spec.bit_depth, 4);

    let mut buffer: [I1F15; 2] = [I1F15::ZERO, I1F15::ZERO];
    let buf = buffer.as_mut_slice();

    // Play to the end
    for _ in 0..spec.num_samples {
        player.get_next_frame(buf).unwrap();
    }

    // Error
    let e = player.get_next_frame(buf);
    assert!(e.is_err());

    // 再生位置を先頭に戻す.
    player.rewind();

    // Play to the end
    for _ in 0..spec.num_samples {
        player.get_next_frame(buf).unwrap();
    }

    // Error
    let e = player.get_next_frame(buf);
    assert!(e.is_err());
}