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script/wavtest.py

@@ -0,0 +1,12 @@
+from scipy.io import wavfile
+import numpy as np
+import matplotlib.pyplot as plt
+
+srate, data = wavfile.read("nasty.wav")
+data = data.flatten()
+
+for i in range(1, len(data)):
+    data[i] = data[i-1] - data[i]
+
+plt.hist(data, range=(-2**23, 2**23), bins=128)
+plt.show()

src/imsuffering.cpp

@@ -6,17 +6,17 @@ using namespace std;
 
 int main()
 {
-    GUID sex = __uuidof(IAudioRenderClient);
-    cout << "{" << endl;
-    std::cout << "0x" << hex << sex.Data1 << ", ";
-    std::cout << "0x" << hex << sex.Data2 << ", ";
-    std::cout << "0x"<<hex <<  sex.Data3 << ", ";
-
+    GUID sex = __uuidof(IAudioClient3);
     cout << ".{ ";
+    cout << ".Data1 = 0x" << hex << sex.Data1 << ", ";
+    cout << ".Data2 = 0x" << hex << sex.Data2 << ", ";
+    cout << ".Data3 = 0x" << hex << sex.Data3 << ", ";
+
+    cout << ".Data4 = .{ ";
     for (int i = 0; i < 8; i++)
         cout << "0x" << hex << (int)sex.Data4[i] << ", ";
 
-    cout << "}";
+    cout << "}}";
 
     return 0;
 }

src/windows.zig

@@ -1,4 +1,5 @@
 const std = @import("std");
+const W = std.unicode.utf8ToUtf16LeStringLiteral;
 
 const win = @cImport({
     @cInclude("windows.h");
@@ -9,26 +10,45 @@ const wasapi = @cImport(@cInclude("audioclient.h"));
 const CLSID_MMDeviceEnumerator: win.CLSID = .{ .Data1 = 0xbcde0395, .Data2 = 0xe52f, .Data3 = 0x467c, .Data4 = .{ 0x8e, 0x3d, 0xc4, 0x57, 0x92, 0x91, 0x69, 0x2e } };
 const IID_IMMDeviceEnumerator: win.IID = .{ .Data1 = 0xa95664d2, .Data2 = 0x9614, .Data3 = 0x4f35, .Data4 = .{ 0xa7, 0x46, 0xde, 0x8d, 0xb6, 0x36, 0x17, 0xe6 } };
 const IID_IAudioClient: win.IID = .{ .Data1 = 0x1cb9ad4c, .Data2 = 0xdbfa, .Data3 = 0x4c32, .Data4 = .{ 0xb1, 0x78, 0xc2, 0xf5, 0x68, 0xa7, 0x3, 0xb2 } };
+const IID_IAudioClient3: win.IID = .{ .Data1 = 0x7ed4ee07, .Data2 = 0x8e67, .Data3 = 0x4cd4, .Data4 = .{ 0x8c, 0x1a, 0x2b, 0x7a, 0x59, 0x87, 0xad, 0x42 } };
 const IID_IAudioRenderClient: win.IID = .{ .Data1 = 0xf294acfc, .Data2 = 0x3146, .Data3 = 0x4483, .Data4 = .{ 0xa7, 0xbf, 0xad, 0xdc, 0xa7, 0xc2, 0x60, 0xe2 } };
 
-fn framesToHundredNanoseconds(frames: f32, sample_rate: f32) c_longlong {
-    return @intFromFloat(10_000_000 * (frames / sample_rate));
+pub export fn WindowProc(window: win.HWND, msg: c_uint, w_param: win.WPARAM, l_param: win.LPARAM) callconv(.C) win.LRESULT {
+    switch (msg) {
+        win.WM_KEYDOWN => {
+            std.debug.print("keydown: {}\n", .{w_param});
+        },
+        else => {},
+    }
+
+    return win.DefWindowProcW(window, msg, w_param, l_param);
+}
+
+pub fn main() !void {
+    var rid: [1]win.RAWINPUTDEVICE = undefined;
+    rid[0].usUsagePage = 0x01;
+    rid[0].usUsage = 0x06;
+    rid[0].dwFlags = 0; // win.RIDEV_INPUTSINK;
+    rid[0].hwndTarget = null;
+
+    if (win.RegisterRawInputDevices(@ptrCast(&rid), 1, @sizeOf(win.RAWINPUTDEVICE)) == 0) {
+        std.debug.print("FUCK {}\n", .{win.GetLastError()});
+        return;
+    }
+
+    var message: win.MSG = undefined;
+    while (win.GetMessageW(&message, null, 0, 0) != 0) {
+        std.debug.print("meow\n", .{});
+        _ = win.TranslateMessage(&message);
+        _ = win.DispatchMessageW(&message);
+    }
 }
 
 pub const WindowsAudio = struct {
-    timer_handle: *anyopaque,
-
-    pub fn init() !void {}
+    pub fn init() i32 {}
 
     fn audioWorker() i32 {
-        const wave_format: wasapi.WAVEFORMATEX = .{
-            .wFormatTag = wasapi.WAVE_FORMAT_IEEE_FLOAT,
-            .nChannels = 2,
-            .nSamplesPerSec = 48000,
-            .wBitsPerSample = 32,
-            .nBlockAlign = 2 * (32 / 8),
-            .nAvgBytesPerSec = 48000 * (2 * (32 / 8)),
-        };
+        if (failed(win.CoInitialize(null))) |err| return err;
 
         const buf_event: *anyopaque = win.CreateEventW(
             null,
@@ -37,8 +57,6 @@ pub const WindowsAudio = struct {
             null,
         ) orelse return hresultFromWin32(win.GetLastError());
 
-        if (failed(win.CoInitialize(null))) |err| return err;
-
         // Get default audio device
         var device_enumerator: *win.IMMDeviceEnumerator = undefined;
         var audio_device: *win.IMMDevice = undefined;
@@ -59,23 +77,52 @@ pub const WindowsAudio = struct {
         ))) |err| return err;
 
         // Initialize audio client
-        var wasapi_audio_client: *wasapi.IAudioClient = undefined;
+        var wasapi_audio_client: *wasapi.IAudioClient3 = undefined;
+        var device_format: *wasapi.WAVEFORMATEX = undefined;
+        var default_period: u32 = undefined;
+        var fundamental_period: u32 = undefined;
+        var min_period: u32 = undefined;
+        var max_period: u32 = undefined;
 
         if (failed(audio_device.lpVtbl.*.Activate.?(
             audio_device,
-            @ptrCast(&IID_IAudioClient),
+            @ptrCast(&IID_IAudioClient3),
             win.CLSCTX_ALL,
             null,
             @ptrCast(&wasapi_audio_client),
         ))) |err| return err;
 
-        if (failed(wasapi_audio_client.lpVtbl.*.Initialize.?(
+        if (failed(wasapi_audio_client.lpVtbl.*.GetMixFormat.?(
+            wasapi_audio_client,
+            @ptrCast(&device_format),
+        ))) |err| return err;
+
+        const negotiated_format: wasapi.WAVEFORMATEX = .{
+            .wFormatTag = wasapi.WAVE_FORMAT_IEEE_FLOAT,
+            .nChannels = 2,
+            .nSamplesPerSec = device_format.nSamplesPerSec,
+            .nAvgBytesPerSec = device_format.nSamplesPerSec * 2 * @sizeOf(f32),
+            .nBlockAlign = 2 * @sizeOf(f32),
+            .wBitsPerSample = @bitSizeOf(f32),
+            .cbSize = 0,
+        };
+
+        win.CoTaskMemFree(device_format);
+
+        if (failed(wasapi_audio_client.lpVtbl.*.GetSharedModeEnginePeriod.?(
+            wasapi_audio_client,
+            &negotiated_format,
+            &default_period,
+            &fundamental_period,
+            &min_period,
+            &max_period,
+        ))) |err| return err;
+
+        if (failed(wasapi_audio_client.lpVtbl.*.InitializeSharedAudioStream.?(
             wasapi_audio_client,
-            wasapi.AUDCLNT_SHAREMODE_SHARED,
             wasapi.AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
-            framesToHundredNanoseconds(128, wave_format.nSamplesPerSec),
-            0,
-            &wave_format,
+            default_period,
+            &negotiated_format,
             null,
         ))) |err| return err;
 
@@ -179,6 +226,6 @@ fn fastSin(x: f32) f32 {
     return abs * sign;
 }
 
-pub fn main() !void {
-    std.debug.print("exiting with code: {}\n", .{WindowsAudio.audioWorker()});
-}
+// pub fn main() !void {
+//     std.debug.print("exiting with code: {x}\n", .{@as(u32, @bitCast(WindowsAudio.audioWorker()))});
+// }