audio: soundio error handling

audio/soundio/error.zig

@@ -0,0 +1,62 @@
+const std = @import("std");
+const c = @import("c.zig");
+
+pub const Error = error{
+    OutOfMemory,
+    /// The backend does not appear to be active or running.
+    InitAudioBackend,
+    /// A system resource other than memory was not available.
+    SystemResources,
+    /// Attempted to open a device and failed.
+    OpeningDevice,
+    NoSuchDevice,
+    /// The programmer did not comply with the API.
+    Invalid,
+    /// libsoundio was compiled without support for that backend.
+    BackendUnavailable,
+    /// An open stream had an error that can only be recovered from by
+    /// destroying the stream and creating it again.
+    Streaming,
+    /// Attempted to use a device with parameters it cannot support.
+    IncompatibleDevice,
+    /// When JACK returns `JackNoSuchClient`
+    NoSuchClient,
+    /// Attempted to use parameters that the backend cannot support.
+    IncompatibleBackend,
+    /// Backend server shutdown or became inactive.
+    BackendDisconnected,
+    Interrupted,
+    /// Buffer underrun occurred.
+    Underflow,
+    /// Unable to convert to or from UTF-8 to the native string format.
+    EncodingString,
+};
+
+pub fn intToError(err: c_int) Error!void {
+    return switch (err) {
+        c.SoundIoErrorNone => {},
+        c.SoundIoErrorNoMem => Error.OutOfMemory,
+        c.SoundIoErrorInitAudioBackend => Error.InitAudioBackend,
+        c.SoundIoErrorSystemResources => Error.SystemResources,
+        c.SoundIoErrorOpeningDevice => Error.OpeningDevice,
+        c.SoundIoErrorNoSuchDevice => Error.NoSuchDevice,
+        c.SoundIoErrorInvalid => Error.Invalid,
+        c.SoundIoErrorBackendUnavailable => Error.BackendUnavailable,
+        c.SoundIoErrorStreaming => Error.Streaming,
+        c.SoundIoErrorIncompatibleDevice => Error.IncompatibleDevice,
+        c.SoundIoErrorNoSuchClient => Error.NoSuchClient,
+        c.SoundIoErrorIncompatibleBackend => Error.IncompatibleBackend,
+        c.SoundIoErrorBackendDisconnected => Error.BackendDisconnected,
+        c.SoundIoErrorInterrupted => Error.Interrupted,
+        c.SoundIoErrorUnderflow => Error.Underflow,
+        c.SoundIoErrorEncodingString => Error.EncodingString,
+        else => unreachable,
+    };
+}
+
+test "error convertion" {
+    const expectError = @import("std").testing.expectError;
+
+    try intToError(c.SoundIoErrorNone);
+    try expectError(Error.OutOfMemory, intToError(c.SoundIoErrorNoMem));
+}

audio/soundio/main.zig

@@ -1,3 +1 @@
-test {
+pub const Error = @import("error.zig").Error;
-    _ = @import("c.zig");
-}