1 extern crate tiff;
2
3 use tiff::decoder::{Decoder, DecodingResult};
4 use tiff::encoder::{colortype, TiffEncoder, SRational};
5 use tiff::ColorType;
6 use tiff::tags::Tag;
7
8 use std::fs::File;
9 use std::io::{Cursor, Seek, SeekFrom};
10 use std::path::PathBuf;
11
12 #[test]
encode_decode()13 fn encode_decode() {
14 let mut image_data = Vec::new();
15 for x in 0..100 {
16 for y in 0..100u8 {
17 let val = x + y;
18 image_data.push(val);
19 image_data.push(val);
20 image_data.push(val);
21 }
22 }
23 let mut file = Cursor::new(Vec::new());
24 {
25 let mut tiff = TiffEncoder::new(&mut file).unwrap();
26
27 tiff.write_image::<colortype::RGB8>(100, 100, &image_data)
28 .unwrap();
29 }
30 {
31 file.seek(SeekFrom::Start(0)).unwrap();
32 let mut decoder = Decoder::new(&mut file).unwrap();
33 assert_eq!(decoder.colortype().unwrap(), ColorType::RGB(8));
34 assert_eq!(decoder.dimensions().unwrap(), (100, 100));
35 if let DecodingResult::U8(img_res) = decoder.read_image().unwrap() {
36 assert_eq!(image_data, img_res);
37 } else {
38 panic!("Wrong data type");
39 }
40 }
41 }
42
43 #[test]
44 /// Test that attempting to encode when the input buffer is undersized returns
45 /// an error rather than panicking.
46 /// See: https://github.com/PistonDevelopers/image-tiff/issues/35
test_encode_undersized_buffer()47 fn test_encode_undersized_buffer() {
48 let input_data = vec![1, 2, 3];
49 let output = Vec::new();
50 let mut output_stream = Cursor::new(output);
51 if let Ok(mut tiff) = TiffEncoder::new(&mut output_stream) {
52 let res = tiff.write_image::<colortype::RGB8>(50, 50, &input_data);
53 assert!(res.is_err());
54 }
55 }
56
57 const TEST_IMAGE_DIR: &str = "./tests/images/";
58
59 macro_rules! test_roundtrip {
60 ($name:ident, $buffer:ident, $buffer_ty:ty) => {
61 fn $name<C: colortype::ColorType<Inner=$buffer_ty>>(file: &str, expected_type: ColorType) {
62 let path = PathBuf::from(TEST_IMAGE_DIR).join(file);
63 let img_file = File::open(path).expect("Cannot find test image!");
64 let mut decoder = Decoder::new(img_file).expect("Cannot create decoder");
65 assert_eq!(decoder.colortype().unwrap(), expected_type);
66
67 let image_data = match decoder.read_image().unwrap() {
68 DecodingResult::$buffer(res) => res,
69 _ => panic!("Wrong data type"),
70 };
71
72 let mut file = Cursor::new(Vec::new());
73 {
74 let mut tiff = TiffEncoder::new(&mut file).unwrap();
75
76 let (width, height) = decoder.dimensions().unwrap();
77 tiff.write_image::<C>(width, height, &image_data)
78 .unwrap();
79 }
80 file.seek(SeekFrom::Start(0)).unwrap();
81 {
82 let mut decoder = Decoder::new(&mut file).unwrap();
83 if let DecodingResult::$buffer(img_res) = decoder.read_image().unwrap() {
84 assert_eq!(image_data, img_res);
85 } else {
86 panic!("Wrong data type");
87 }
88 }
89 }
90 };
91 }
92
93 test_roundtrip!(test_u8_roundtrip, U8, u8);
94 test_roundtrip!(test_u16_roundtrip, U16, u16);
95 test_roundtrip!(test_u32_roundtrip, U32, u32);
96 test_roundtrip!(test_u64_roundtrip, U64, u64);
97
98 #[test]
test_gray_u8_roundtrip()99 fn test_gray_u8_roundtrip() {
100 test_u8_roundtrip::<colortype::Gray8>("minisblack-1c-8b.tiff", ColorType::Gray(8));
101 }
102
103 #[test]
test_rgb_u8_roundtrip()104 fn test_rgb_u8_roundtrip() {
105 test_u8_roundtrip::<colortype::RGB8>("rgb-3c-8b.tiff", ColorType::RGB(8));
106 }
107
108 #[test]
test_cmyk_u8_roundtrip()109 fn test_cmyk_u8_roundtrip() {
110 test_u8_roundtrip::<colortype::CMYK8>("cmyk-3c-8b.tiff", ColorType::CMYK(8));
111 }
112
113 #[test]
test_gray_u16_roundtrip()114 fn test_gray_u16_roundtrip() {
115 test_u16_roundtrip::<colortype::Gray16>("minisblack-1c-16b.tiff", ColorType::Gray(16));
116 }
117
118 #[test]
test_rgb_u16_roundtrip()119 fn test_rgb_u16_roundtrip() {
120 test_u16_roundtrip::<colortype::RGB16>("rgb-3c-16b.tiff", ColorType::RGB(16));
121 }
122
123 #[test]
test_cmyk_u16_roundtrip()124 fn test_cmyk_u16_roundtrip() {
125 test_u16_roundtrip::<colortype::CMYK16>("cmyk-3c-16b.tiff", ColorType::CMYK(16));
126 }
127
128 #[test]
test_gray_u32_roundtrip()129 fn test_gray_u32_roundtrip() {
130 test_u32_roundtrip::<colortype::Gray32>("gradient-1c-32b.tiff", ColorType::Gray(32));
131 }
132
133 #[test]
test_rgb_u32_roundtrip()134 fn test_rgb_u32_roundtrip() {
135 test_u32_roundtrip::<colortype::RGB32>("gradient-3c-32b.tiff", ColorType::RGB(32));
136 }
137
138 #[test]
test_gray_u64_roundtrip()139 fn test_gray_u64_roundtrip() {
140 test_u64_roundtrip::<colortype::Gray64>("gradient-1c-64b.tiff", ColorType::Gray(64));
141 }
142
143 #[test]
test_rgb_u64_roundtrip()144 fn test_rgb_u64_roundtrip() {
145 test_u64_roundtrip::<colortype::RGB64>("gradient-3c-64b.tiff", ColorType::RGB(64));
146 }
147
148 #[test]
test_multiple_byte()149 fn test_multiple_byte() {
150 let mut data = Cursor::new(Vec::new());
151
152 {
153 let mut tiff = TiffEncoder::new(&mut data).unwrap();
154 let mut image_encoder = tiff.new_image::<colortype::Gray8>(1, 1).unwrap();
155 let encoder = image_encoder.encoder();
156
157 encoder.write_tag(Tag::Unknown(65000), &[1_u8][..]).unwrap();
158 encoder.write_tag(Tag::Unknown(65001), &[1_u8, 2][..]).unwrap();
159 encoder.write_tag(Tag::Unknown(65002), &[1_u8, 2, 3][..]).unwrap();
160 encoder.write_tag(Tag::Unknown(65003), &[1_u8, 2, 3, 4][..]).unwrap();
161 encoder.write_tag(Tag::Unknown(65004), &[1_u8, 2, 3, 4, 5][..]).unwrap();
162 }
163
164 data.set_position(0);
165 {
166 let mut decoder = Decoder::new(&mut data).unwrap();
167
168 assert_eq!(decoder.get_tag(Tag::Unknown(65000)).unwrap().into_u32_vec().unwrap(), [1]);
169 assert_eq!(decoder.get_tag(Tag::Unknown(65001)).unwrap().into_u32_vec().unwrap(), [1, 2]);
170 assert_eq!(decoder.get_tag(Tag::Unknown(65002)).unwrap().into_u32_vec().unwrap(), [1, 2, 3]);
171 assert_eq!(decoder.get_tag(Tag::Unknown(65003)).unwrap().into_u32_vec().unwrap(), [1, 2, 3, 4]);
172 assert_eq!(decoder.get_tag(Tag::Unknown(65004)).unwrap().into_u32_vec().unwrap(), [1, 2, 3, 4, 5]);
173 }
174 }
175
176 #[test]
177 /// Test writing signed tags from TIFF 6.0
test_signed()178 fn test_signed() {
179 let mut data = Cursor::new(Vec::new());
180
181 {
182 let mut tiff = TiffEncoder::new(&mut data).unwrap();
183 let mut image_encoder = tiff.new_image::<colortype::Gray8>(1, 1).unwrap();
184 let encoder = image_encoder.encoder();
185
186 //Use the "reusable" tags section as per the TIFF6 spec
187 encoder.write_tag(Tag::Unknown(65000), -1_i8).unwrap();
188 encoder.write_tag(Tag::Unknown(65001), &[-1_i8][..]).unwrap();
189 encoder.write_tag(Tag::Unknown(65002), &[-1_i8, 2][..]).unwrap();
190 encoder.write_tag(Tag::Unknown(65003), &[-1_i8, 2, -3][..]).unwrap();
191 encoder.write_tag(Tag::Unknown(65004), &[-1_i8, 2, -3, 4][..]).unwrap();
192 encoder.write_tag(Tag::Unknown(65005), &[-1_i8, 2, -3, 4, -5][..]).unwrap();
193
194 encoder.write_tag(Tag::Unknown(65010), -1_i16).unwrap();
195 encoder.write_tag(Tag::Unknown(65011), -1_i16).unwrap();
196 encoder.write_tag(Tag::Unknown(65012), &[-1_i16, 2][..]).unwrap();
197 encoder.write_tag(Tag::Unknown(65013), &[-1_i16, 2, -3][..]).unwrap();
198
199 encoder.write_tag(Tag::Unknown(65020), -1_i32).unwrap();
200 encoder.write_tag(Tag::Unknown(65021), &[-1_i32][..]).unwrap();
201 encoder.write_tag(Tag::Unknown(65022), &[-1_i32, 2][..]).unwrap();
202
203 encoder.write_tag(Tag::Unknown(65030), SRational { n: -1, d: 100 }).unwrap();
204 encoder.write_tag(Tag::Unknown(65031), &[SRational { n: -1, d: 100 }, SRational { n: 2, d: 100 }][..]).unwrap();
205 }
206
207 //Rewind the cursor for reading
208 data.set_position(0);
209 {
210 let mut decoder = Decoder::new(&mut data).unwrap();
211
212 assert_eq!(decoder.get_tag(Tag::Unknown(65000)).unwrap().into_i32().unwrap(), -1, );
213 assert_eq!(decoder.get_tag(Tag::Unknown(65001)).unwrap().into_i32_vec().unwrap(), [-1]);
214 assert_eq!(decoder.get_tag(Tag::Unknown(65002)).unwrap().into_i32_vec().unwrap(), [-1, 2]);
215 assert_eq!(decoder.get_tag(Tag::Unknown(65003)).unwrap().into_i32_vec().unwrap(), [-1, 2, -3]);
216 assert_eq!(decoder.get_tag(Tag::Unknown(65004)).unwrap().into_i32_vec().unwrap(), [-1, 2, -3, 4]);
217 assert_eq!(decoder.get_tag(Tag::Unknown(65005)).unwrap().into_i32_vec().unwrap(), [-1, 2, -3, 4, -5], );
218
219 assert_eq!(decoder.get_tag(Tag::Unknown(65010)).unwrap().into_i32().unwrap(), -1);
220 assert_eq!(decoder.get_tag(Tag::Unknown(65011)).unwrap().into_i32_vec().unwrap(), [-1]);
221 assert_eq!(decoder.get_tag(Tag::Unknown(65012)).unwrap().into_i32_vec().unwrap(), [-1, 2]);
222 assert_eq!(decoder.get_tag(Tag::Unknown(65013)).unwrap().into_i32_vec().unwrap(), [-1, 2, -3]);
223
224 assert_eq!(decoder.get_tag(Tag::Unknown(65020)).unwrap().into_i32().unwrap(), -1);
225 assert_eq!(decoder.get_tag(Tag::Unknown(65021)).unwrap().into_i32_vec().unwrap(), [-1]);
226 assert_eq!(decoder.get_tag(Tag::Unknown(65022)).unwrap().into_i32_vec().unwrap(), [-1, 2]);
227
228 assert_eq!(decoder.get_tag(Tag::Unknown(65030)).unwrap().into_i32_vec().unwrap(), [-1, 100]);
229 assert_eq!(decoder.get_tag(Tag::Unknown(65031)).unwrap().into_i32_vec().unwrap(), [-1_i32, 100, 2, 100]);
230 }
231 }
232
233 #[test]
234 /// check multipage image handling
test_multipage_image()235 fn test_multipage_image() {
236 let mut img_file = Cursor::new(Vec::new());
237
238 {
239 // first create a multipage image with 2 images
240 let mut img_encoder = TiffEncoder::new(&mut img_file).unwrap();
241
242 // write first grayscale image (2x2 16-bit)
243 let img1: Vec<u16> = [1, 2, 3, 4].to_vec();
244 img_encoder.write_image::<colortype::Gray16>(2, 2, &img1[..]).unwrap();
245 // write second grayscale image (3x3 8-bit)
246 let img2: Vec<u8> = [9, 8, 7, 6, 5, 4, 3, 2, 1].to_vec();
247 img_encoder.write_image::<colortype::Gray8>(3, 3, &img2[..]).unwrap();
248 }
249
250 // seek to the beginning of the file, so that it can be decoded
251 img_file.seek(SeekFrom::Start(0)).unwrap();
252
253 {
254 let mut img_decoder = Decoder::new(&mut img_file).unwrap();
255
256 // check the dimensions of the image in the first page
257 assert_eq!(img_decoder.dimensions().unwrap(), (2, 2));
258 img_decoder.next_image().unwrap();
259 // check the dimensions of the image in the second page
260 assert_eq!(img_decoder.dimensions().unwrap(), (3, 3));
261 }
262 }
263