audio: increase soundio binding coverage for running sine-wine example

audio/soundio/ChannelLayout.zig

@@ -0,0 +1,11 @@
+const c = @import("c.zig");
+const intToError = @import("error.zig").intToError;
+const Error = @import("error.zig").Error;
+
+const ChannelLayout = @This();
+
+handle: c.SoundIoChannelLayout,
+
+pub fn channelCount(self: ChannelLayout) i32 {
+    return self.handle.channel_count;
+}

audio/soundio/Device.zig

@@ -1,5 +1,19 @@
+const std = @import("std");
 const c = @import("c.zig");
+const OutStream = @import("OutStream.zig");
 
-const SoundIoDevice = @This();
+const Device = @This();
 
 handle: *c.SoundIoDevice,
+
+pub fn unref(self: Device) void {
+    c.soundio_device_unref(self.handle);
+}
+
+pub fn name(self: Device) [:0]const u8 {
+    return std.mem.span(self.handle.*.name);
+}
+
+pub fn createOutStream(self: Device) error{OutOfMemory}!OutStream {
+    return OutStream{ .handle = c.soundio_outstream_create(self.handle) orelse return error.OutOfMemory };
+}

audio/soundio/OutStream.zig

@@ -0,0 +1,55 @@
+const c = @import("c.zig");
+const intToError = @import("error.zig").intToError;
+const Error = @import("error.zig").Error;
+const Format = @import("enums.zig").Format;
+const ChannelLayout = @import("ChannelLayout.zig");
+
+const OutStream = @This();
+
+pub const WriteCallback = fn (stream: ?[*]c.SoundIoOutStream, frame_count_min: c_int, frame_count_max: c_int) callconv(.C) void;
+
+handle: *c.SoundIoOutStream,
+
+pub fn deinit(self: OutStream) void {
+    c.soundio_outstream_destroy(self.handle);
+}
+
+pub fn open(self: OutStream) Error!void {
+    try intToError(c.soundio_outstream_open(self.handle));
+}
+
+pub fn start(self: OutStream) Error!void {
+    try intToError(c.soundio_outstream_start(self.handle));
+}
+
+pub fn beginWrite(self: OutStream, areas: [*]?[*]c.SoundIoChannelArea, frame_count: *i32) Error!void {
+    try intToError(c.soundio_outstream_begin_write(
+        self.handle,
+        areas,
+        frame_count,
+    ));
+}
+
+pub fn endWrite(self: OutStream) Error!void {
+    try intToError(c.soundio_outstream_end_write(self.handle));
+}
+
+pub fn setFormat(self: OutStream, format: Format) void {
+    self.handle.*.format = @enumToInt(format);
+}
+
+pub fn setWriteCallback(self: OutStream, callback: WriteCallback) void {
+    self.handle.*.write_callback = callback;
+}
+
+pub fn layout(self: OutStream) ChannelLayout {
+    return ChannelLayout{ .handle = self.handle.*.layout };
+}
+
+pub fn sampleRate(self: OutStream) i32 {
+    return self.handle.*.sample_rate;
+}
+
+pub fn layoutError(self: OutStream) Error!void {
+    try intToError(self.handle.*.layout_error);
+}

audio/soundio/SoundIo.zig

@@ -8,8 +8,8 @@ const SoundIo = @This();
 
 handle: *c.SoundIo,
 
-pub fn init() Error!SoundIo {
+pub fn init() error{OutOfMemory}!SoundIo {
-    return SoundIo{ .handle = c.soundio_create() orelse return Error.OutOfMemory };
+    return SoundIo{ .handle = c.soundio_create() orelse return error.OutOfMemory };
 }
 
 pub fn deinit(self: SoundIo) void {
@@ -32,6 +32,10 @@ pub fn flushEvents(self: SoundIo) void {
     c.soundio_flush_events(self.handle);
 }
 
+pub fn waitEvents(self: SoundIo) void {
+    c.soundio_wait_events(self.handle);
+}
+
 pub fn defaultInputDeviceIndex(self: SoundIo) ?u16 {
     const index = c.soundio_default_input_device_index(self.handle);
     return if (index < 0) null else @intCast(u16, index);

audio/soundio/enums.zig

@@ -1,4 +1,4 @@
-pub const c = @import("c.zig");
+const c = @import("c.zig");
 
 pub const ChannelId = enum(u7) {
     invalid = c.SoundIoChannelIdInvalid,

audio/soundio/main.zig

@@ -1,4 +1,28 @@
 pub usingnamespace @import("enums.zig");
-pub usingnamespace @import("SoundIo.zig");
+pub const c = @import("c.zig");
-pub usingnamespace @import("Device.zig");
+pub const SoundIo = @import("SoundIo.zig");
+pub const Device = @import("Device.zig");
+pub const OutStream = @import("OutStream.zig");
 pub const Error = @import("error.zig").Error;
+
+test {
+    refAllDecls(@import("SoundIo.zig"));
+    refAllDecls(@import("Device.zig"));
+    refAllDecls(@import("OutStream.zig"));
+    refAllDecls(@import("ChannelLayout.zig"));
+}
+
+fn refAllDecls(comptime T: type) void {
+    @setEvalBranchQuota(10000);
+    inline for (comptime @import("std").meta.declarations(T)) |decl| {
+        if (decl.is_pub) {
+            if (@TypeOf(@field(T, decl.name)) == type) {
+                switch (@typeInfo(@field(T, decl.name))) {
+                    .Struct, .Enum, .Union, .Opaque => refAllDecls(@field(T, decl.name)),
+                    else => {},
+                }
+            }
+            _ = @field(T, decl.name);
+        }
+    }
+}