feat: audio stack performance improvements

2026-05-19 18:13:37 +02:00
parent 2340ad3d91
commit de4e996f3f
4 changed files with 86 additions and 15 deletions
@@ -1074,6 +1074,22 @@ namespace Drivers::Audio::IntelHda {
        KernelLogStream(OK, "HDA") << "Stream closed";
    }

+    uint32_t GetWriteSpace(int handle) {
+        if (handle != 0 || !g_stream.Active) return 0;
+
+        uint32_t hwPos = g_dmaPos[g_stream.StreamIndex * 2];
+        uint32_t writePos = g_stream.WritePos;
+        uint32_t available;
+        if (writePos >= hwPos) {
+            available = TOTAL_BUFFER_SIZE - (writePos - hwPos);
+        } else {
+            available = hwPos - writePos;
+        }
+        if (available > 64) available -= 64;
+        else available = 0;
+        return available;
+    }
+
    int Write(int handle, const uint8_t* data, uint32_t size) {
        if (handle != 0 || !g_stream.Active || !data || size == 0)
            return -1;