Clarify licensing in headers, LICENSE and README.md

Author: wallisch

LICENSE

@@ -1,10 +1,8 @@
 MIT License
 
-Copyright (c) 2010-2016 Lukas Lalinsky on chromaprint
-https://github.com/acoustid/chromaprint
-Copyright (c) 2016 David Dias on substantial parts of AudioDecoder.swift
-https://github.com/NeoTeo/fingerprinter-chromaprint
-Copyright (c) 2021 Philipp Wallisch on any other code
+Copyright 2010-2016 Lukas Lalinsky on chromaprint
+Copyright 2016 David Dias on substantial parts of AudioDecoder.swift
+Copyright 2021, 2024 Philipp Wallisch on any other code
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -153,3 +153,9 @@ The `AudioFingerprint` class throws either `AudioDecoder.Error` or `AudioFingerp
 You can also `import CChromaprint` to directly interact with Chromaprints C interface. Please refer to the official documentation for further information.
 
 *Note: To avoid licensing issues, CChromaprint has internal input resampling disabled and thus requires that input audio for the fingerprinter is already at the configured fingerprint sample rate.*
+
+### Licensing
+
+This package is distributed under the MIT license, see the LICENSE file for details.
+
+The chromaprint project by default includes resampling code from the ffmpeg library, which is licensed under LGPL 2.1. ChromaSwift however uses Apples AVFoundation for resampling and removes all ffmpeg code from the build, making the package fully MIT compliant.

Sources/ChromaSwift/AcoustID.swift

@@ -1,5 +1,5 @@
-// Copyright (c) 2021 Philipp Wallisch
-// Distributed under the MIT license, see the LICENSE file for details.
+// Copyright 2021, 2024 Philipp Wallisch
+// SPDX-License-Identifier: MIT
 
 import Foundation
 

Sources/ChromaSwift/AudioDecoder.swift

@@ -1,6 +1,6 @@
-// Copyright (c) 2021 Philipp Wallisch
-// Copyright (c) 2016 David Dias
-// Distributed under the MIT license, see the LICENSE file for details.
+// Copyright 2016 David Dias
+// Copyright 2021 Philipp Wallisch
+// SPDX-License-Identifier: MIT
 
 import AVFoundation
 import CChromaprint

Sources/ChromaSwift/AudioFingerprint.swift

@@ -1,5 +1,5 @@
-// Copyright (c) 2021 Philipp Wallisch
-// Distributed under the MIT license, see the LICENSE file for details.
+// Copyright 2021, 2024 Philipp Wallisch
+// SPDX-License-Identifier: MIT
 
 import Foundation
 import CChromaprint

Sources/ChromaSwift/URLSessionProtocol.swift

@@ -1,5 +1,5 @@
-// Copyright (c) 2024 Philipp Wallisch
-// Distributed under the MIT license, see the LICENSE file for details.
+// Copyright 2024 Philipp Wallisch
+// SPDX-License-Identifier: MIT
 
 import Foundation
 

Tests/CChromaprintTests/CChromaprintTests.swift

@@ -1,5 +1,5 @@
-// Copyright (c) 2021 Philipp Wallisch
-// Distributed under the MIT license, see the LICENSE file for details.
+// Copyright 2021 Philipp Wallisch
+// SPDX-License-Identifier: MIT
 
 import XCTest
 import CChromaprint

Tests/ChromaSwiftTests/ChromaSwiftTests.swift

@@ -1,5 +1,5 @@
-// Copyright (c) 2021 Philipp Wallisch
-// Distributed under the MIT license, see the LICENSE file for details.
+// Copyright 2021, 2024 Philipp Wallisch
+// SPDX-License-Identifier: MIT
 
 import XCTest
 @testable import ChromaSwift

Tests/ChromaSwiftTests/URLSessionMock.swift

@@ -1,5 +1,5 @@
-// Copyright (c) 2024 Philipp Wallisch
-// Distributed under the MIT license, see the LICENSE file for details.
+// Copyright 2024 Philipp Wallisch
+// SPDX-License-Identifier: MIT
 
 import Foundation
 @testable import ChromaSwift