sphinx_eurocom_ima.bt

//------------------------------------------------
//--- 010 Editor v12.0.1 Binary Template
//
//      File: EurocomIMA.bt
//   Authors: jmarti856 and Swyter
//   Version: 1.1
//   Purpose: View the structure of Eurocom custom IMA ADPCM blocks.
//  Category: Audio
// File Mask: *.ima
//  ID Bytes:
//   History:
//      1.1 - Renamed fields and identified block_id as A-Z debug/block marker.
//------------------------------------------------

typedef struct
{
    int16 predictor;     // Initial PCM predictor for this block
    uint8 step_index;    // IMA ADPCM step table index
    char block_id;      // Usually ASCII A-Z, probably debug/block marker

    struct PackedSampleByte
    {
        uint8 high_nibble : 4;  // First ADPCM nibble decoded
        uint8 low_nibble  : 4;  // Second ADPCM nibble decoded
    } samples[28];              // 28 bytes = 56 ADPCM nibbles/samples

} EurocomImaBlock;

EurocomImaBlock blocks[FileSize() / sizeof(EurocomImaBlock)];