Add PCX format support

CHANGELOG.md

@@ -5,6 +5,10 @@
 - Improve ZIP reader performance and precision when using `reader-zip` feature
 - Reduce PDF reader memory usage and increase accuracy when using `reader-pdf` feature
 
+## New formats support
+
+- Picture Exchange (PCX)
+
 # Version 0.22.0 (2023-11-04)
 
 ## Internal changes

README.md

@@ -359,6 +359,7 @@ file-format = "0.23"
 - OpenEXR (EXR)
 - OpenRaster (ORA)
 - Panasonic Raw (RW2)
+- Picture Exchange (PCX)
 - Portable Arbitrary Map (PAM)
 - Portable BitMap (PBM)
 - Portable FloatMap (PFM)

src/formats.rs

@@ -1958,6 +1958,13 @@ formats! {
     extension = "asc"
     kind = Application
 
+    format = PictureExchange
+    name = "Picture Exchange"
+    short_name = "PCX"
+    media_type = "image/x-pcx"
+    extension = "pcx"
+    kind = Image
+
     format = PlainText
     name = "Plain Text"
     short_name = "TXT"

src/signatures.rs

@@ -1157,6 +1157,18 @@ signatures! {
     format = PersonalStorageTable
     value = b"!BDN"
 
+    format = PictureExchange
+    value = b"\x0A\x00\x00", b"\x00" offset = 64
+    value = b"\x0A\x00\x01", b"\x00" offset = 64
+    value = b"\x0A\x02\x00", b"\x00" offset = 64
+    value = b"\x0A\x02\x01", b"\x00" offset = 64
+    value = b"\x0A\x03\x00", b"\x00" offset = 64
+    value = b"\x0A\x03\x01", b"\x00" offset = 64
+    value = b"\x0A\x04\x00", b"\x00" offset = 64
+    value = b"\x0A\x04\x01", b"\x00" offset = 64
+    value = b"\x0A\x05\x00", b"\x00" offset = 64
+    value = b"\x0A\x05\x01", b"\x00" offset = 64
+
     format = QemuCopyOnWrite
     value = b"QFI\xFB"
 

tests/image.rs

@@ -253,6 +253,12 @@ fn test_panasonic_raw() {
     assert_eq!(fmt, FileFormat::PanasonicRaw);
 }
 
+#[test]
+fn test_picture_exchange() {
+    let fmt = FileFormat::from_file("fixtures/image/sample.pcx").unwrap();
+    assert_eq!(fmt, FileFormat::PictureExchange);
+}
+
 #[test]
 fn test_portable_arbitrary_map() {
     let fmt = FileFormat::from_file("fixtures/image/sample.pam").unwrap();