feat: Intel HDA audio driver, audio streaming syscalls, userspace Music app, fixes and improvements, rudimentary Bluetooth support

2026-03-10 17:14:33 +01:00
parent 807c2602fe
commit 576ad34f95
58 changed files with 11275 additions and 137 deletions
@@ -0,0 +1,60 @@
+/*
+    * A2dp.hpp
+    * Bluetooth A2DP (Advanced Audio Distribution Profile)
+    * AVDTP signaling and SBC audio streaming
+    * Copyright (c) 2026 Daniel Hammer
+*/
+
+#pragma once
+#include <cstdint>
+
+namespace Drivers::USB::Bluetooth::A2dp {
+
+    // =========================================================================
+    // A2DP stream states
+    // =========================================================================
+
+    enum class State {
+        Idle,           // No A2DP connection
+        Discovering,    // AVDTP discover in progress
+        Configured,     // Stream endpoint configured
+        Open,           // Stream open, ready for audio
+        Streaming       // Actively streaming audio
+    };
+
+    // =========================================================================
+    // Public API
+    // =========================================================================
+
+    // Called by L2CAP when an AVDTP channel becomes ready
+    void OnChannelReady(uint16_t l2capCid);
+
+    // Process an AVDTP signaling packet
+    void ProcessAvdtp(const uint8_t* data, uint16_t len);
+
+    // Configure a stream for the given PCM parameters
+    bool ConfigureStream(uint32_t sampleRate, uint8_t channels, uint8_t bitsPerSample);
+
+    // Start streaming
+    bool StartStream();
+
+    // Stop streaming
+    bool StopStream();
+
+    // Write PCM audio data to the Bluetooth audio stream
+    // Returns number of bytes consumed
+    int WriteAudio(const uint8_t* pcmData, uint32_t pcmLen);
+
+    // Get current state
+    State GetState();
+
+    // Check if currently streaming
+    bool IsStreaming();
+
+    // Get volume (0-100)
+    int GetVolume();
+
+    // Set volume (0-100)
+    void SetVolume(int percent);
+
+}