Use URL in AppleSampler instead of file paths

Sources/AudioKit/Nodes/Playback/Apple Sampler/AppleSampler+SoundFonts.swift

@@ -0,0 +1,90 @@
+import AVFoundation
+
+// SoundFont Support
+extension AppleSampler {
+
+ internal func loadSoundFont(_ file: String, preset: Int, type: Int, in bundle: Bundle = .main) throws {
+ guard let url = findFileURL(file, withExtension: ["sf2", "dls"], in: bundle) else {
+ Log("SoundFont file not found: \(file)")
+ throw NSError(domain: NSURLErrorDomain, code: NSFileReadUnknownError, userInfo: nil)
+ }
+ do {
+ try samplerUnit.loadSoundBankInstrument(
+ at: url,
+ program: MIDIByte(preset),
+ bankMSB: MIDIByte(type),
+ bankLSB: MIDIByte(kAUSampler_DefaultBankLSB))
+ samplerUnit.reset()
+ } catch let error as NSError {
+ Log("Error loading SoundFont \(file)")
+ throw error
+ }
+ }
+
+ internal func loadSoundFont(url: URL, preset: Int, type: Int, in bundle: Bundle = .main) throws {
+ do {
+ try samplerUnit.loadSoundBankInstrument(
+ at: url,
+ program: MIDIByte(preset),
+ bankMSB: MIDIByte(type),
+ bankLSB: MIDIByte(kAUSampler_DefaultBankLSB))
+ samplerUnit.reset()
+ } catch let error as NSError {
+ Log("Error loading SoundFont \(url)")
+ throw error
+ }
+ }
+
+ /// Load a Bank from a SoundFont SF2 sample data file or a DLS file
+ ///
+ /// - Parameters:
+ /// - file: Name of the SoundFont SF2 or the DLS file without the .sf2 / .dls extension
+ /// - preset: Number of the program to use
+ /// - bank: Number of the bank to use
+ /// - bundle: The bundle from which to load the file. Defaults to main bundle.
+ ///
+ public func loadSoundFont(_ file: String, preset: Int, bank: Int, in bundle: Bundle = .main) throws {
+ guard let url = findFileURL(file, withExtension: ["sf2", "dls"], in: bundle) else {
+ Log("Soundfont file not found: \(file)")
+ throw NSError(domain: NSURLErrorDomain, code: NSFileReadUnknownError, userInfo: nil)
+ }
+ do {
+ var bMSB: Int
+ if bank <= 127 {
+ bMSB = kAUSampler_DefaultMelodicBankMSB
+ } else {
+ bMSB = kAUSampler_DefaultPercussionBankMSB
+ }
+ let bLSB: Int = bank % 128
+ try samplerUnit.loadSoundBankInstrument(
+ at: url,
+ program: MIDIByte(preset),
+ bankMSB: MIDIByte(bMSB),
+ bankLSB: MIDIByte(bLSB))
+ samplerUnit.reset()
+ } catch let error as NSError {
+ Log("Error loading SoundFont \(file)")
+ throw error
+ }
+ }
+
+ /// Load a Melodic SoundFont SF2 sample data file or a DLS file
+ /// - Parameters:
+ /// - url: Location of the file
+ /// - preset: Number of the program to use
+ /// - bundle: The bundle from which to load the file. Defaults to main bundle.
+ public func loadMelodicSoundFont(url: URL, preset: Int, in bundle: Bundle = .main) throws {
+ try loadSoundFont(url: url, preset: preset, type: kAUSampler_DefaultMelodicBankMSB, in: bundle)
+ }
+
+ /// Load a Percussive SoundFont SF2 sample data file or a DLS file
+ ///
+ /// - Parameters:
+ /// - file: Name of the SoundFont SF2 or the DLS file without the .sf2 / .dls extension
+ /// - preset: Number of the program to use
+ /// - bundle: The bundle from which to load the file. Defaults to main bundle.
+ ///
+ public func loadPercussiveSoundFont(_ file: String, preset: Int = 0, in bundle: Bundle = .main) throws {
+ try loadSoundFont(file, preset: preset, type: kAUSampler_DefaultPercussionBankMSB, in: bundle)
+ }
+}