28 lines
923 B
Zig
28 lines
923 B
Zig
const std = @import("std");
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const assert = std.debug.assert;
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extern fn zig_stbi_load_from_memory(buffer: [*]const u8, len: i32, x: ?*i32, y: ?*i32, comp: ?*i32, req_comp: i32) callconv(.C) ?[*]u8;
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extern fn zig_stbi_image_free(buffer: ?*anyopaque) callconv(.C) void;
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pub const Image = struct {
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width: u32,
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height: u32,
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rgba: []u8,
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pub fn deinit(self: Image) void {
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zig_stbi_image_free(self.rgba.ptr);
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}
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};
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pub fn load(buffer: []const u8) !Image {
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var width: i32 = 0;
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var height: i32 = 0;
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const image_rgba = zig_stbi_load_from_memory(buffer.ptr, @intCast(buffer.len), &width, &height, null, 4);
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if (image_rgba == null) {
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return error.PNGDecode;
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}
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errdefer zig_stbi_image_free(image_rgba);
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const byte_count: u32 = @intCast(width * height * 4);
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return Image{ .width = @intCast(width), .height = @intCast(height), .rgba = image_rgba.?[0..byte_count] };
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} |