--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/semiconginev2/audio/platform/windows.nim	Wed Jul 17 22:02:11 2024 +0700
@@ -0,0 +1,43 @@
+import ./thirdparty/winim/winim/inc/mmsystem
+
+template CheckWinMMResult*(call: untyped) =
+  let value = call
+  if value < 0:
+    raise newException(Exception, "Windows multimedia error: " & astToStr(call) &
+      " returned " & $value)
+type
+  NativeSoundDevice* = object
+    handle: HWAVEOUT
+    buffers: seq[WAVEHDR]
+
+proc OpenSoundDevice*(sampleRate: uint32, buffers: seq[ptr SoundData]): NativeSoundDevice =
+  var format = WAVEFORMATEX(
+    wFormatTag: WAVE_FORMAT_PCM,
+    nChannels: 2,
+    nSamplesPerSec: DWORD(sampleRate),
+    nAvgBytesPerSec: DWORD(sampleRate) * 4,
+    nBlockAlign: 4,
+    wBitsPerSample: 16,
+    cbSize: 0,
+  )
+  CheckWinMMResult waveOutOpen(addr result.handle, WAVE_MAPPER, addr format, DWORD_PTR(0), DWORD_PTR(0), CALLBACK_NULL)
+
+  for i in 0 ..< buffers.len:
+    result.buffers.add WAVEHDR(
+      lpData: cast[cstring](addr buffers[i][][0]),
+      dwBufferLength: DWORD(buffers[i][].len * sizeof(Sample)),
+      dwLoops: 1,
+    )
+  for i in 0 ..< result.buffers.len:
+    CheckWinMMResult waveOutPrepareHeader(result.handle, addr result.buffers[i], UINT(sizeof(WAVEHDR)))
+    CheckWinMMResult waveOutWrite(result.handle, addr result.buffers[i], UINT(sizeof(WAVEHDR)))
+
+proc WriteSoundData*(soundDevice: var NativeSoundDevice, buffer: int) =
+  while (soundDevice.buffers[buffer].dwFlags and WHDR_DONE) == 0:
+    sleep(1)
+  CheckWinMMResult waveOutWrite(soundDevice.handle, addr soundDevice.buffers[buffer], UINT(sizeof(WAVEHDR)))
+
+proc CloseSoundDevice*(soundDevice: var NativeSoundDevice) =
+  for i in 0 ..< soundDevice.buffers.len:
+    discard waveOutUnprepareHeader(soundDevice.handle, addr soundDevice.buffers[i], UINT(sizeof(WAVEHDR)))
+  waveOutClose(soundDevice.handle)