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#ifndef STC_ML_H
#define STC_ML_H
#include <limits>
#include "common.h"
#include "stc_embed_c.h"
#include "stc_extract_c.h"
typedef unsigned int uint;
typedef unsigned char u8;
const float F_INF = std::numeric_limits<float>::infinity();
const float D_INF = std::numeric_limits<double>::infinity();
// EMBEDDING ALGORITHMS ***********************************************************************************************************
// MULTI-LAYERED EMBEDDING for plus/minus one changes
// payload limited case - returns distortion
float stc_pm1_pls_embed(uint cover_length, int* cover, float* costs, uint message_length, u8* message, // input variables
uint stc_constraint_height, float wet_cost, // other input parameters
int* stego, uint* num_msg_bits, uint &max_trials, float* coding_loss = 0); // output variables
// distortion limited case - returns distortion
float stc_pm1_dls_embed(uint cover_length, int* cover, float* costs, uint message_length, u8* message, float target_distortion, // input variables
uint stc_constraint_height, float expected_coding_loss, float wet_cost, // other input parameters
int* stego, uint* num_msg_bits, uint &max_trials, float* coding_loss = 0); // output variables
// MULTI-LAYERED EMBEDDING for plus/minus one and two changes
// payload limited case - returns distortion
float stc_pm2_pls_embed(uint cover_length, int* cover, float* costs, uint message_length, u8* message, // input variables
uint stc_constraint_height, float wet_cost, // other input parameters
int* stego, uint* num_msg_bits, uint &max_trials, float* coding_loss = 0); // output variables
// distortion limited case - returns distortion
float stc_pm2_dls_embed(uint cover_length, int* cover, float* costs, uint message_length, u8* message, float target_distortion, // input variables
uint stc_constraint_height, float expected_coding_loss, float wet_cost, // other input parameters
int* stego, uint* num_msg_bits, uint &max_trials, float* coding_loss = 0); // output variables
// GENERAL MULTI-LAYERED EMBEDDING
// algorithm for embedding into 1 layer, both payload- and distortion-limited case
float stc_ml1_embed(uint cover_length, int* cover, short* direction, float* costs, uint message_length, u8* message, float target_distortion,// input variables
uint stc_constraint_height, float expected_coding_loss, // other input parameters
int* stego, uint* num_msg_bits, uint &max_trials, float* coding_loss = 0); // output variables
// algorithm for embedding into 2 layers, both payload- and distortion-limited case
float stc_ml2_embed(uint cover_length, float* costs, int* stego_values, uint message_length, u8* message, float target_distortion, // input variables
uint stc_constraint_height, float expected_coding_loss, // other input parameters
int* stego, uint* num_msg_bits, uint &max_trials, float* coding_loss = 0); // output and optional variables
// algorithm for embedding into 3 layers, both payload- and distortion-limited case
float stc_ml3_embed(uint cover_length, float* costs, int* stego_values, uint message_length, u8* message, float target_distortion, // input variables
uint stc_constraint_height, float expected_coding_loss, // other input parameters
int* stego, uint* num_msg_bits, uint &max_trials, float* coding_loss = 0); // output and optional variables
// EXTRACTION ALGORITHMS **********************************************************************************************************
/** Extraction algorithm for 2 layered construction. Can be used with: stc_pm1_pls_embed, stc_pm1_dls_embed, stc_ml2_embed
@param stego_length - ...
@param stego - ...
@param msg_bits - ...
@param stc_constraint_height - ...
@param message - ...
*/
void stc_ml_extract(uint stego_length, int* stego, uint num_of_layers, uint* num_msg_bits, // input variables
uint stc_constraint_height, // other input parameters
u8* message); // output variables
#endif // STC_ML_H
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