[client] windows: add WASAPI audio support

client/audiodevs/WASAPI/capture_queue.h

@@ -0,0 +1,73 @@
+/**
+ * Looking Glass
+ * Copyright © 2017-2026 The Looking Glass Authors
+ * https://looking-glass.io
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc., 59
+ * Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef _H_LG_WASAPI_CAPTURE_QUEUE_
+#define _H_LG_WASAPI_CAPTURE_QUEUE_
+
+#include "interface/audio.h"
+
+#include <stdatomic.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+typedef struct WasapiCapturePacket
+{
+  uint8_t      * data;
+  size_t         bytes;
+  int            frames;
+  bool           clockValid;
+  LG_AudioClock  clock;
+}
+WasapiCapturePacket;
+
+typedef struct WasapiCaptureQueue
+{
+  WasapiCapturePacket * packets;
+  uint8_t             * data;
+  size_t                slotSize;
+  size_t                slotCount;
+  _Atomic(size_t)       head;
+  _Atomic(size_t)       tail;
+}
+WasapiCaptureQueue;
+
+bool                        wasapi_captureQueueInit   (
+    WasapiCaptureQueue * queue, size_t capacity,
+    size_t slotSize);
+void                        wasapi_captureQueueFree   (
+    WasapiCaptureQueue * queue);
+void                        wasapi_captureQueueReset  (
+    WasapiCaptureQueue * queue);
+uint8_t                   * wasapi_captureQueueBegin  (
+    WasapiCaptureQueue * queue, size_t bytes);
+void                        wasapi_captureQueueCommit (
+    WasapiCaptureQueue * queue, size_t bytes, int frames,
+    const LG_AudioClock * clock);
+bool                        wasapi_captureQueuePush   (
+    WasapiCaptureQueue * queue,
+    const uint8_t * data, size_t bytes, int frames,
+    const LG_AudioClock * clock);
+const WasapiCapturePacket * wasapi_captureQueueFront  (
+    WasapiCaptureQueue * queue);
+void                        wasapi_captureQueuePop    (
+    WasapiCaptureQueue * queue);
+
+#endif