mach/libs/sysaudio/src/main.zig
2022-09-18 17:09:54 -07:00

118 lines
2.9 KiB
Zig

const std = @import("std");
const mem = std.mem;
const testing = std.testing;
const builtin = @import("builtin");
const Backend = if (builtin.cpu.arch == .wasm32) @import("webaudio.zig") else switch (builtin.os.tag) {
.linux,
.windows,
.macos,
.ios,
=> @import("soundio.zig"),
else => @compileError("unsupported os"),
};
pub const Error = Backend.Error;
pub const Device = Backend.Device;
pub const DeviceIterator = Backend.DeviceIterator;
pub const DataCallback = *const fn (device: *Device, user_data: ?*anyopaque, buffer: []u8) void;
pub const Mode = enum {
input,
output,
};
pub const Format = enum {
U8,
S16,
S24,
S32,
F32,
};
const Audio = @This();
backend: Backend,
pub fn init() Error!Audio {
return Audio{
.backend = try Backend.init(),
};
}
pub fn deinit(self: Audio) void {
self.backend.deinit();
}
pub fn waitEvents(self: Audio) void {
self.backend.waitEvents();
}
pub fn requestDevice(self: Audio, allocator: std.mem.Allocator, config: Device.Options) Error!*Device {
return self.backend.requestDevice(allocator, config);
}
pub fn inputDeviceIterator(self: Audio) DeviceIterator {
return self.backend.inputDeviceIterator();
}
pub fn outputDeviceIterator(self: Audio) DeviceIterator {
return self.backend.outputDeviceIterator();
}
test "list devices" {
const a = try init();
defer a.deinit();
var iter = a.inputDeviceIterator();
while (try iter.next()) |_| {}
}
test "connect to device" {
const a = try init();
defer a.deinit();
const d = try a.requestDevice(std.testing.allocator, .{ .mode = .output });
defer d.deinit(std.testing.allocator);
}
test "connect to device from descriptor" {
const a = try init();
defer a.deinit();
var iter = a.outputDeviceIterator();
var device_conf = (try iter.next()) orelse return error.NoDeviceFound;
const d = try a.requestDevice(std.testing.allocator, device_conf);
defer d.deinit(std.testing.allocator);
}
test "requestDevice behavior: null is_raw" {
const a = try init();
defer a.deinit();
var iter = a.outputDeviceIterator();
var device_conf = (try iter.next()) orelse return error.NoDeviceFound;
const bad_conf = Device.Options{
.is_raw = null,
.mode = device_conf.mode,
.id = device_conf.id,
};
try testing.expectError(error.InvalidParameter, a.requestDevice(std.testing.allocator, bad_conf));
}
test "requestDevice behavior: invalid id" {
return error.SkipZigTest;
// const a = try init();
// defer a.deinit();
// var iter = a.outputDeviceIterator();
// var device_conf = (try iter.next()) orelse return error.NoDeviceFound;
// const bad_conf = Device.Options{
// .is_raw = device_conf.is_raw,
// .mode = device_conf.mode,
// .id = "wrong-id",
// };
// try testing.expectError(error.DeviceUnavailable, a.requestDevice(bad_conf));
}