#include "render_struct.h"
#include "render_png_struct.h"
#include "render_slices.h"

struct render_slices {
    // do I have to free it?
    int owned_by_me;

    // the induvidual slices
    struct render_slice {
        // the public info
        struct render_slice_info info;

        // the render info
        struct render render_info;
        
        // our offset into rowbuf
        size_t row_offset;

        // pointer back to parent
        struct render_slices *self;
    } slices[RENDER_SLICES_MAX];
    
    // how many slices are in use
    size_t num_slices;
    
    // how many slices have reported the current row as done
    size_t segments_done;

    // the a pointer to the raw memory buffer
    unsigned char *rowbuf;

    // the two rows of memory area used to a) render b) build the png
    unsigned char *rows[2];
    
    // which of the two rows is is used for png-building (default = 0, 1)
    int render_row, done_row;
    
    // the png struct
    struct render_png png_info;
};

int render_slices_init (struct render_slices *ctx, struct render *render);
void render_slices_deinit (struct render_slices *ctx);