#ifndef DEVIL1TEX_H
#define DEVIL1TEX_H

#include <stdint.h>
#include <stdbool.h>

// disable struct padding
// to easily impose struct on plain data.
#pragma pack(push, 1)

struct TexturePack {
    char    id[4];
    int32_t   batchNumber;
    uint32_t  firstBatchOffset; // <format=hex>
    uint32_t  unknownA;
};

struct TextureBatchDescriptor{
    int32_t batchIdx;
    uint32_t hash;        // <format=hex>
    uint32_t texNumber;
    uint32_t unknownA[8]; // <format=hex>
    uint32_t textureSize; // <format=hex>
    uint32_t unknownB[30];
};

struct Texture {
    // size of array is defined by descriptor
    // textureSize
    unsigned char *data;
};

struct TextureBatch {
    // quantity of textures are defined by descriptor
    // texNumber
    struct Texture *batch;
};

#pragma pack(pop)

// -------------------------------------------------------+
//                  Functions
// -------------------------------------------------------+

// Print Texture Pack Header.
void printtph(struct TexturePack*);

// Print Texture Batch Descriptor.
void printtbd(struct TextureBatchDescriptor*);

// Get Texture Batch Descriptor.
// ** = 'pass by reference' of a pointer to struct
bool gettexdescriptor(struct TextureBatchDescriptor**,
                      unsigned int,
                      const char *,
                      unsigned int);

// Get Texture Batch.
// ** = 'pass by reference' of a pointer to struct
bool gettexbatch(struct TextureBatch**, 
                 unsigned int, 
                 const char*,
                 unsigned int);

// Unpack Texture Batch
bool unpacktexbatch(struct Texture*,
                    unsigned int,
                    const char*, 
                    const unsigned int);

// -------------------------------------------------------+
//                  Retired Functions
//  These require the client allocate more on the heap.
// -------------------------------------------------------+

void gettbd(struct TextureBatchDescriptor**,
            const char*,
            unsigned int);

unsigned int gettexturebatch(
                     struct TextureBatch**,
                     struct TextureBatchDescriptor**,
                     const char*, 
                     unsigned int);

void locatetextures(unsigned int*,
                    struct TexturePack*,
                    struct TextureBatchDescriptor**);

#endif