85 lines
2.5 KiB
Rust
85 lines
2.5 KiB
Rust
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use gif::{DecodeOptions, DisposalMethod, Encoder, Frame};
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#[test]
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fn frame_consistency_is_configurable() {
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let image = create_image_with_oob_frames();
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{
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let options = DecodeOptions::new();
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let mut data = image.as_slice();
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let mut decoder = options.clone().read_info(&mut data).unwrap();
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assert!(decoder.read_next_frame().is_ok());
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assert!(decoder.read_next_frame().is_ok());
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}
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{
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let mut options = DecodeOptions::new();
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options.check_frame_consistency(true);
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let mut data = image.as_slice();
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let mut decoder = options.clone().read_info(&mut data).unwrap();
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assert!(decoder.read_next_frame().is_ok());
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assert!(decoder.read_next_frame().is_err());
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}
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{
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let mut options = DecodeOptions::new();
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options.check_frame_consistency(false);
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let mut data = image.as_slice();
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let mut decoder = options.clone().read_info(&mut data).unwrap();
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assert!(decoder.read_next_frame().is_ok());
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assert!(decoder.read_next_frame().is_ok());
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}
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}
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fn create_image_with_oob_frames() -> Vec<u8> {
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let mut data = vec![];
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let mut encoder = Encoder::new(&mut data, 2, 2, &[0, 0, 0]).unwrap();
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let mut frame = Frame {
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delay: 1,
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dispose: DisposalMethod::Any,
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transparent: None,
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needs_user_input: false,
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top: 0,
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left: 0,
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width: 2,
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height: 2,
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interlaced: false,
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palette: None,
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buffer: vec![0, 0, 0, 0].into(),
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};
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encoder.write_frame(&frame).unwrap();
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frame.top = 1;
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frame.left = 1;
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encoder.write_frame(&frame).unwrap();
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drop(encoder);
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data
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}
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#[test]
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fn check_for_end_code_is_configurable() {
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// In this particular image, the image data of the 62nd frame has no end code.
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let image: &[u8] = include_bytes!(concat!(env!("CARGO_MANIFEST_DIR"), "/tests/samples/gifplayer-muybridge.gif"));
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{
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let options = DecodeOptions::new();
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let mut decoder = options.clone().read_info(&image[..]).unwrap();
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for _ in 0..61 {
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assert!(decoder.read_next_frame().is_ok());
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}
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assert!(decoder.read_next_frame().is_ok());
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}
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{
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let mut options = DecodeOptions::new();
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options.check_lzw_end_code(true);
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let mut decoder = options.clone().read_info(&image[..]).unwrap();
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for _ in 0..61 {
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assert!(decoder.read_next_frame().is_ok());
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}
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assert!(decoder.read_next_frame().is_err());
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}
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}
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