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const std = @import("std");
const Allocator = std.mem.Allocator;
const picasso = @import("root.zig");
const Rgba = picasso.color.Rgba;
const Bitmap = picasso.Bitmap;
pub const Image = struct {
const Self = @This();
pub const ReadError = error {
InvalidMagicValue,
InvalidSize,
} || std.Io.Reader.Error || Allocator.Error;
bitmap: Bitmap(Rgba(16)),
pub fn read(gpa: Allocator, reader: *std.Io.Reader) ReadError!Self {
if (!std.mem.eql(u8, "farbfeld", try reader.takeArray(8))) {
return ReadError.InvalidMagicValue;
}
var self: Self = undefined;
const width = try reader.takeInt(u32, .big);
const height = try reader.takeInt(u32, .big);
self.bitmap = try .init_undefined(gpa, width, height);
errdefer self.bitmap.deinit(gpa);
for (self.bitmap.pixels) |*pixel| {
pixel.* = try reader.takeStruct(Rgba(16), .big);
}
return self;
}
pub fn deinit(self: Self, gpa: Allocator) void {
self.bitmap.deinit(gpa);
}
};
test "rgb" {
const buffer = @embedFile("testing/rgb.ff");
var reader: std.Io.Reader = .fixed(buffer);
const gpa = std.testing.allocator;
const image: Image = try .read(gpa, &reader);
defer image.deinit(gpa);
try std.testing.expectEqual(600, image.bitmap.width);
try std.testing.expectEqual(450, image.bitmap.height);
}
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