Pixel-Composer/scripts/buffer_functions/buffer_functions.gml

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function buffer_get_color(buffer, _x, _y, w, h) { #region
buffer_seek(buffer, buffer_seek_start, (w * _y + _x) * 4);
var c = buffer_read(buffer, buffer_u32);
return c;
} #endregion
function buffer_get_string(buffer, text = true, limit = 400) { #region
if(is_array(buffer)) return "[buffer array]";
if(!buffer_exists(buffer)) return "";
buffer_seek(buffer, buffer_seek_start, 0);
var len = min(limit, buffer_get_size(buffer));
var ss = "";
for (var i = 0; i < len; i++) {
var _r = buffer_read(buffer, buffer_u8);
var _s = text? chr(_r) : dec_to_hex(_r, 2);
ss += _s;
if(!text && i % 2) ss += " ";
}
return ss;
} #endregion
function buffer_from_string(str) { #region
var _b = buffer_create(string_length(str) * 1, buffer_fast, 1);
for( var i = 1; i <= string_length(str); i++ )
buffer_write(_b, buffer_u8, ord(string_char_at(str, i)));
return _b;
} #endregion
function buffer_from_surface(surface, header = true) { #region
static header_length = 24;
if(!is_surface(surface)) return noone;
var bitSize = surface_format_get_bytes(surface_get_format(surface));
var _b = buffer_create((header_length * header) + surface_get_width_safe(surface) * surface_get_height_safe(surface) * bitSize, buffer_fixed, 1);
if(header) {
buffer_write(_b, buffer_text, "PXCS");
buffer_write(_b, buffer_u16, surface_get_width_safe(surface));
buffer_write(_b, buffer_u16, surface_get_height_safe(surface));
buffer_write(_b, buffer_u8, surface_get_format(surface));
}
buffer_get_surface(_b, surface, header_length * header);
return _b;
} #endregion
function buffer_from_file(path) { #region
if(!file_exists_empty(path)) return;
var _b = buffer_load(path);
return _b;
} #endregion
function buffer_read_at(buffer, position, type) { #region
INLINE
buffer_seek(buffer, buffer_seek_start, position);
return buffer_read(buffer, type);
} #endregion
function buffer_write_at(buffer, position, type, data) { #region
INLINE
buffer_seek(buffer, buffer_seek_start, position);
return buffer_write(buffer, type, data);
} #endregion
function buffer_serialize(buffer, compress = true) { #region
INLINE
if(!buffer_exists(buffer)) return "";
if(compress) {
var comp = buffer_compress(buffer, 0, buffer_get_size(buffer));
return buffer_base64_encode(comp, 0, buffer_get_size(comp));
}
return buffer_base64_encode(buffer, 0, buffer_get_size(buffer));
} #endregion
function buffer_deserialize(buffer, compress = true) { #region
INLINE
var buff = buffer_base64_decode(buffer);
if(!compress) return buff;
return buffer_decompress(buff);
} #endregion
function buffer_getPixel(buffer, _w, _h, _x, _y) { #region
if(_x < 0 || _y < 0 || _x >= _w || _y >= _h) return 0;
buffer_seek(buffer, buffer_seek_start, (_w * _y + _x) * 4);
return buffer_read(buffer, buffer_u32);
} #endregion
function buffer_setPixel(buffer, _w, _h, _x, _y, _c) { #region
if(_x < 0 || _y < 0 || _x >= _w || _y >= _h) return 0;
buffer_seek(buffer, buffer_seek_start, (_w * _y + _x) * 4);
buffer_write(buffer, buffer_u32, _c);
} #endregion
function buffer_compress_string(str) { #region
var _len = string_length(str);
var buffer = buffer_create(1, buffer_grow, 1);
buffer_write(buffer, buffer_string, str);
return buffer_compress(buffer, 0, buffer_get_size(buffer));
} #endregion
function buffer_to_start(buff) { INLINE buffer_seek(buff, buffer_seek_start, 0); }
function buffer_delete_safe(buff) { INLINE if(buffer_exists(buff)) buffer_delete(buff); }