#ifndef DEPENDENCY_AUDIO_DECODE_WAV
// Stubs:
//(none required)
#else

snd_sequence_struct *snd_decode_wav(uint8 *buffer, int32 bytes) {
    // ref: https://ccrma.stanford.edu/courses/422/projects/WaveFormat/
    if (bytes < 44)
        return NULL;
    if ((*(uint32 *)&buffer[12]) != 0x20746d66)
        return NULL; //"fmt "
    if ((*(uint16 *)&buffer[20]) != 1)
        return NULL; // PCM = 1 (i.e. Linear quantization) Values other than 1 indicate some form of compression.

    static int32 rif_type;
    rif_type = 0;
    if ((*(uint32 *)&buffer[0]) == 0x46464952)
        rif_type = 1; // RIFF
    // if ((*(uint32*)&buffer[0])==0x????????) rif_type=1;//RIFX (not supported yet)
    if (rif_type == 0)
        return NULL;

    static int32 out_bytes;
    static uint8 *bufout;

    static int32 chunk1size;
    chunk1size = *(uint32 *)&buffer[16];
    // qbs_print(qbs_str((int32)chunk1size),1);

    // read next chunk
    static uint32 chunk2name;
    static int32 chunk2size;
skip_chunk:
    if ((20 + chunk1size) >= bytes)
        return NULL; // no more chunks!
    chunk2name = *(uint32 *)&buffer[20 + chunk1size];
    chunk2size = *(uint32 *)&buffer[20 + chunk1size + 4];
    if (chunk2name != 0x61746164) {
        chunk1size += (8 + chunk2size);
        goto skip_chunk; // it's probably a "fact" chunk, pointless for PCM data
    }

    out_bytes = chunk2size;
    bufout = (uint8 *)malloc(out_bytes);
    memcpy(bufout, buffer + 20 + chunk1size + 8, out_bytes);

    // qbs_print(qbs_str((int32)out_bytes),1);

    // attach to new sequence
    static int32 seq_handle;
    seq_handle = list_add(snd_sequences);
    static snd_sequence_struct *seq;
    seq = (snd_sequence_struct *)list_get(snd_sequences, seq_handle);
    memset(seq, 0, sizeof(snd_sequence_struct));
    seq->references = 1;

    seq->channels = *(uint16 *)&buffer[22];
    seq->sample_rate = *(uint32 *)&buffer[24];
    seq->bits_per_sample = *(uint16 *)&buffer[34];
    seq->endian = 1; // little (Microsoft format)
    seq->is_unsigned = 0;
    if (seq->bits_per_sample == 8)
        seq->is_unsigned = 1;
    seq->data = (uint16 *)bufout;
    seq->data_size = out_bytes;

    // qbs_print(qbs_str((int32)seq->channels),1);
    // qbs_print(qbs_str((int32)seq->sample_rate),1);
    // qbs_print(qbs_str((int32)seq->bits_per_sample),1);

    return seq;
}

#endif