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#include "rskos.h"

#ifndef RS_KOS

#include "rs/rstexture.h"

#include "rs/rsgl.h"

#include "rs/rsshader.h"

#include "rs/rsaudio.h"

#include 

#include 

//unsigned char* rskos_malloc(unsigned int bytes_count) {

//    return malloc(bytes_count);

//};

//

//void rskos_free(unsigned char* pointer) {

//    free(pointer);

//};

//

//void rskos_memset(unsigned char* pointer, unsigned char value, unsigned int bytes_count) {

//    memset(pointer, value, bytes_count);

//};

//

//void rskos_memcpy(unsigned char* dest, unsigned char* src, unsigned int bytes_count) {

//    memcpy(dest, src, bytes_count);

//};

unsigned int rskos_get_time() {

    return rs_app.app_time;

};

void rskos_draw_area(int x, int y, int w, int h, int k_scale, unsigned char *data, unsigned char *scaled_buffer, int image_format) {

    int bpp = image_format == RSKOS_BGR ? 3 : 4;

//    int i, j;

//

//    for (i = 0; i < h*k_scale; i++) {

//        for (j = 0; j < w*k_scale; j++) {

//            scaled_buffer[ (i*w*k_scale + j)*3 + 0] = data[ ( (i/k_scale)*w + (j/k_scale) )*4 + 0];

//            scaled_buffer[ (i*w*k_scale + j)*3 + 1] = data[ ( (i/k_scale)*w + (j/k_scale) )*4 + 1];

//            scaled_buffer[ (i*w*k_scale + j)*3 + 2] = data[ ( (i/k_scale)*w + (j/k_scale) )*4 + 2];

//        };

//    };

	glViewport(0, 0, rs_app.width, rs_app.height);

    glClearColor( 0.2596078431, 0.2815686275, 0.3929411765, 1.0 ); // #98d0ed

    //glClearColor( 0.0, 0.4, 0.1 + 0.5*0.001*(rs_get_time()%1024) , 1.0 );

	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // <-- FBO

    //rs_tx_t tex = rs_tx_create_from_data(w*k_scale, h*k_scale, 3, 0, 1, scaled_buffer);

    rs_tx_t tex = rs_tx_create_from_data(w, h, bpp, 0, 1, data);

    glBindTexture(GL_TEXTURE_2D, tex);

    rs_sh_use(DefaultShader);

    rs_mx_identity_modelview();

    rs_mx_ortho_proj();

    glUniformMatrix4fv( DefaultShader[RS_SH_PROJ_ID], 1, GL_FALSE, rs_reg.mx_proj );

    glUniformMatrix4fv( DefaultShader[RS_SH_MODELVIEW_ID], 1, GL_FALSE, rs_reg.mx_modelview );

    glrsDrawRect(x, y, x+w*k_scale, y+h*k_scale, DefaultShader[RS_SH_POS_ID], DefaultShader[RS_SH_UV_ID]);

    rs_tx_destroy(&tex);

    rsDoSwapBuffers();

};

void rskos_resize_window(int w, int h) {

    //

};

void rskos_get_screen_size(unsigned int  *pw, unsigned int  *ph) {

    *pw = rs_app.width + 50;

    *ph = rs_app.height + 50;

};

void rskos_exit() {

    rsAppExit();

};

int rskos_file_save(char *filename, unsigned char *data, int length) {

    FILE *fp;

    fp = fopen(filename, "w");

    if (!fp) {

        return 0;

    };

    fwrite(data, 1, length, fp);

    fclose(fp);

    return 1;

};

int rskos_file_load(char *filename, unsigned char *data, int length) {

    FILE *fp;

    fp = fopen(filename, "r");

    if (!fp) {

        return 0;

    };

    fread(data, 1, length, fp);

    fclose(fp);

    return 1;

};

//void rskos_snd_init() {

//    //

//

//    rs_audio

//

//};

void rskos_snd_create_buffer(SNDBUF *hbuf, signed short *buffer, unsigned int length) {

    //

    rs_sound_t *snd = malloc( sizeof(rs_sound_t) );

    rs_sound_create_from_data(snd, length*2, (unsigned char*) buffer);

    *hbuf = snd;

};

void rskos_snd_update_buffer(SNDBUF *hbuf, signed short *buffer, unsigned int length) {

    rs_sound_destroy(*hbuf);

    rskos_snd_create_buffer(hbuf, buffer, length);

};

void rskos_snd_play(SNDBUF *hbuf, unsigned int mode) {

    rs_sound_play(*hbuf);

};

void rskos_snd_stop(SNDBUF *hbuf) {

    rs_sound_stop(*hbuf);

};

#else

    #include "rs/rsplatform.h"

    #pragma pack(push,1)

    typedef struct rskos_file_struct_t {

        unsigned int func_num;

        unsigned int offset;

        unsigned int flags;

        unsigned int length;

        unsigned char *data;

        unsigned char  zero;

        char *filename;

    } rskos_file_struct_t;

    #pragma pack(pop)

    unsigned int rskos_get_time() {

        return 1;

    };

    int rskos_file_load(char *filename, unsigned char *data, int length) {

//        char filename_abs[] = "/sys/games/************************";

//        memcpy( filename_abs[ strchr(filename_abs, "*") ], filename, strlen(filename)+1 );

        rskos_file_struct_t file_struct;

        file_struct.func_num = 0;

        file_struct.offset = 0;

        file_struct.flags = 0;

        file_struct.length = length;

        file_struct.data = data;

        file_struct.zero = 0;

        file_struct.filename = filename;

        asm volatile ("int $0x40"::"a"(70), "b"(&file_struct) : "memory");

        return 1;

    }

    int rskos_file_save(char *filename, unsigned char *data, int length) {

//        char filename_abs[] = "/sys/games/************************";

//        memcpy( filename_abs[ strchr(filename_abs, "*") ], filename, strlen(filename)+1 );

        rskos_file_struct_t file_struct;

        file_struct.func_num = 2;

        file_struct.offset = 0;

        file_struct.flags = 0;

        file_struct.length = length;

        file_struct.data = data;

        file_struct.zero = 0;

        file_struct.filename = filename;

        asm volatile ("int $0x40"::"a"(70), "b"(&file_struct) : "memory" );

        return 1;

    }

    void rskos_draw_area(int x, int y, int w, int h, int k_scale, unsigned char *data, unsigned char *scaled_buffer, int image_format) {

        int i, j;

        for (i = 0; i < h*k_scale; i++) {

            for (j = 0; j < w*k_scale; j++) {

                scaled_buffer[ (i*w*k_scale + j)*3 + 0] = data[ ( (i/k_scale)*w + (j/k_scale) )*4 + 0];

                scaled_buffer[ (i*w*k_scale + j)*3 + 1] = data[ ( (i/k_scale)*w + (j/k_scale) )*4 + 1];

                scaled_buffer[ (i*w*k_scale + j)*3 + 2] = data[ ( (i/k_scale)*w + (j/k_scale) )*4 + 2];

            };

        };

        kol_paint_image(0, 0, w*k_scale, h*k_scale, scaled_buffer);

    };

    void rskos_resize_window(int w, int h) {

        // !!!!!!!!! add define-fix here

        w = -1 + w + 10; // 2 x 5px border

        h = -1 + kol_skin_height() + h + 5; // bottom 5px border

        asm volatile ("int $0x40"::"a"(67), "b"(-1), "c"(-1), "d"(w), "S"(h));

    };

    void rskos_get_screen_size(unsigned int  *pw, unsigned int  *ph) {

        kol_screen_get_size(pw, ph);

    };

    void rskos_exit() {

        kol_exit();

    };

    #define fmt PCM_1_16_16 // 1 channel, 16 bit per sample, 16 kHz

    void rskos_snd_create_buffer(SNDBUF *phbuf, signed short *buffer, unsigned int length_samples) {

        unsigned int snd_format = fmt;

        CreateBuffer(snd_format|PCM_STATIC, length_samples*2, phbuf);

        int offset = 0;

        SetBuffer(*phbuf, (void*)buffer, offset, length_samples*2);

    };

    void rskos_snd_update_buffer(SNDBUF *phbuf, signed short *buffer, unsigned int length_samples) {

        unsigned int snd_format = fmt;

//        CreateBuffer(snd_format|PCM_STATIC, length, phbuf);

        int offset = 0;

        SetBuffer(*phbuf, (void*)buffer, offset, length_samples*2);

    };

    void rskos_snd_play(SNDBUF *phbuf, unsigned int mode) {

        SetBufferPos(*phbuf, 0);

        PlayBuffer(*phbuf, 0);

    };

    void rskos_snd_stop(SNDBUF *phbuf) {

        StopBuffer(*phbuf);

    };

#endif