terom@17: #ifndef RENDER_PNG_INTERNAL_H
terom@17: #define RENDER_PNG_INTERNAL_H
terom@17: 
terom@17: #include <png.h>
terom@17: 
terom@17: #include "render.h"
terom@17: #include "render_png.h"
terom@17: 
terom@17: struct render_png {
terom@17:     // do I need to free it?
terom@17:     int owned_by_me;
terom@17: 
terom@17:     // libpng handles
terom@17:     png_structp png_ptr;
terom@17:     png_infop info_ptr;
terom@17: 
terom@17:     // some info that we need to keep from the struct render
terom@17:     render_ctx_write_cb io_write_fn;
terom@17:     render_ctx_flush_cb io_flush_fn;
terom@17:     void *cb_arg;
terom@17: };
terom@17: 
terom@17: int render_png_init (struct render_png *ctx, struct render *render);
terom@19: void render_png_deinit (struct render_png *ctx);
terom@17: 
terom@17: #endif /* RENDER_PNG_INTERNAL_H */