implement Milestone 12: Microphone interface with permission and user gesture requirements
This commit is contained in:
@@ -562,8 +562,9 @@ TEST(CameraInterface, StopsOnAppStop);
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---
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## Milestone 12: Virtual Hardware - Microphone
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## Milestone 12: Virtual Hardware - Microphone ✅
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**Status**: Complete
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**Goal**: Audio recording with mandatory indicators.
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**Estimated Files**: 1 new file
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507
SANDBOX_MILESTONE_12.md
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507
SANDBOX_MILESTONE_12.md
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@@ -0,0 +1,507 @@
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# Milestone 12: Virtual Hardware - Microphone
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**Status**: Complete
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**Goal**: Audio recording with mandatory recording indicators and security controls.
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---
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## Overview
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This milestone implements secure microphone access for Lua apps:
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- Permission required (`microphone` permission)
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- User gesture required to start recording
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- Mandatory recording indicator (system-controlled, cannot be hidden)
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- Single recording session per app
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- Sample rate limiting
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- Automatic cleanup on app stop
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### Key Deliverables
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1. **MicrophoneInterface class** - Session management, permission checks
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2. **RecordingSession class** - Active recording session wrapper
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3. **Lua microphone API** - `microphone.start()`, session methods
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4. **Recording indicator** - System-level UI notification
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---
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## File Structure
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```
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src/main/cpp/sandbox/
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├── microphone_interface.h # NEW - Microphone API header
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└── microphone_interface.cpp # NEW - Microphone implementation
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```
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---
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## Implementation Details
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### 1. MicrophoneInterface Class
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```cpp
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// microphone_interface.h
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#pragma once
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#include <string>
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#include <memory>
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#include <functional>
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#include <mutex>
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#include <atomic>
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#include <vector>
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#include <chrono>
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struct lua_State;
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namespace mosis {
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class PermissionGate;
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enum class AudioFormat {
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PCM_16BIT,
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PCM_FLOAT
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};
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struct RecordingConfig {
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int sample_rate = 44100; // 8000, 16000, 22050, 44100, 48000
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int channels = 1; // 1 (mono) or 2 (stereo)
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AudioFormat format = AudioFormat::PCM_16BIT;
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};
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struct AudioBuffer {
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std::vector<uint8_t> data;
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int sample_rate;
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int channels;
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AudioFormat format;
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uint64_t timestamp_ms;
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int sample_count;
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};
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class RecordingSession {
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public:
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using BufferCallback = std::function<void(const AudioBuffer& buffer)>;
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RecordingSession(int id, const RecordingConfig& config);
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~RecordingSession();
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int GetId() const { return m_id; }
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const RecordingConfig& GetConfig() const { return m_config; }
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bool IsActive() const { return m_active; }
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// Get accumulated audio data
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AudioBuffer GetBuffer();
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// Set buffer callback (for streaming)
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void SetOnBuffer(BufferCallback cb) { m_on_buffer = std::move(cb); }
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// Stop recording
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void Stop();
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// For mock mode - simulate audio data arrival
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void SimulateBuffer(const AudioBuffer& buffer);
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private:
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int m_id;
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RecordingConfig m_config;
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std::atomic<bool> m_active{true};
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BufferCallback m_on_buffer;
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AudioBuffer m_accumulated;
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mutable std::mutex m_mutex;
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};
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class MicrophoneInterface {
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public:
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MicrophoneInterface(const std::string& app_id, PermissionGate* permissions);
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~MicrophoneInterface();
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// Start recording session
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// Returns session on success, nullptr on failure (sets error)
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// Requires microphone permission and user gesture
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std::shared_ptr<RecordingSession> StartSession(const RecordingConfig& config, std::string& error);
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// Stop active session
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void StopSession();
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// Check if session is active
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bool HasActiveSession() const;
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// Check if recording indicator should be shown
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bool IsIndicatorVisible() const;
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// Cleanup on app stop
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void Shutdown();
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// For testing
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void SetMockMode(bool enabled) { m_mock_mode = enabled; }
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bool IsMockMode() const { return m_mock_mode; }
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// Simulate user gesture for testing
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void SimulateUserGesture();
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private:
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std::string m_app_id;
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PermissionGate* m_permissions;
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std::shared_ptr<RecordingSession> m_active_session;
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mutable std::mutex m_mutex;
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bool m_mock_mode = true;
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std::atomic<bool> m_indicator_visible{false};
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int m_next_session_id = 1;
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// Track user gesture timing
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std::chrono::steady_clock::time_point m_last_gesture_time;
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bool m_has_gesture = false;
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static constexpr int GESTURE_VALIDITY_MS = 5000; // 5 seconds
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bool HasRecentUserGesture() const;
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void ShowIndicator();
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void HideIndicator();
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};
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// Register microphone.* APIs as globals
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void RegisterMicrophoneAPI(lua_State* L, MicrophoneInterface* microphone);
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} // namespace mosis
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```
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### 2. Permission Requirements
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Microphone access requires:
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1. `microphone` permission declared in manifest
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2. Permission granted by user (dangerous permission)
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3. Recent user gesture (within 5 seconds)
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```cpp
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// Permission check flow
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bool MicrophoneInterface::StartSession(...) {
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// 1. Check permission
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if (!m_permissions->HasPermission("microphone")) {
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error = "Microphone permission not granted";
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return nullptr;
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}
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// 2. Check user gesture
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if (!HasRecentUserGesture()) {
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error = "Microphone requires user gesture";
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return nullptr;
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}
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// 3. Check no existing session
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if (m_active_session) {
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error = "Recording session already active";
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return nullptr;
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}
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// ... create session
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}
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```
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### 3. Recording Indicator
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The recording indicator is mandatory and system-controlled:
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- Shown whenever microphone session is active
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- Cannot be hidden or obscured by app
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- Positioned in system UI area
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- Shows microphone icon with "Recording" text
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### 4. Lua API
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```lua
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-- Start recording session (requires permission + user gesture)
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local session, err = microphone.start({
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sampleRate = 44100, -- 8000, 16000, 22050, 44100, 48000
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channels = 1, -- 1 (mono) or 2 (stereo)
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format = "pcm16" -- "pcm16" or "float"
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})
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if not session then
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print("Failed to start recording:", err)
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return
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end
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-- Set buffer callback (for streaming audio)
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session:on("buffer", function(buffer)
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-- buffer.data, buffer.sampleRate, buffer.channels, buffer.sampleCount
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end)
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-- Get accumulated audio data
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local audio = session:getBuffer()
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if audio then
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print("Recorded", audio.sampleCount, "samples at", audio.sampleRate, "Hz")
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end
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-- Stop recording
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session:stop()
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-- Check if microphone is active
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if microphone.isActive() then
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print("Microphone is recording")
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end
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```
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### 5. Sample Rate Validation
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To prevent resource abuse:
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- Allowed sample rates: 8000, 16000, 22050, 44100, 48000
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- Maximum: 48000 Hz
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- Channels: 1 (mono) or 2 (stereo)
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### 6. Session Lifecycle
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```
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User Gesture ──► microphone.start() ──► Session Active ──► Indicator Shown
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│ │
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│ error │ session:stop()
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▼ ▼
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nil, err Session Closed ──► Indicator Hidden
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App Stop ──► MicrophoneInterface::Shutdown() ──► All Sessions Closed
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```
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---
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## Test Cases
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### Test 1: Requires Permission
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```cpp
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bool Test_MicrophoneRequiresPermission(std::string& error_msg) {
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// Create context WITHOUT microphone permission
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SandboxContext ctx;
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ctx.app_id = "test.app";
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ctx.permissions = {};
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ctx.is_system_app = false;
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PermissionGate permissions(ctx);
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mosis::MicrophoneInterface mic("test.app", &permissions);
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mic.SimulateUserGesture();
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std::string err;
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mosis::RecordingConfig config;
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auto session = mic.StartSession(config, err);
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EXPECT_TRUE(session == nullptr);
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EXPECT_TRUE(err.find("permission") != std::string::npos);
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return true;
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}
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```
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### Test 2: Requires User Gesture
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```cpp
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bool Test_MicrophoneRequiresUserGesture(std::string& error_msg) {
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SandboxContext ctx;
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ctx.app_id = "test.app";
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ctx.permissions = {"microphone"};
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ctx.is_system_app = false;
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PermissionGate permissions(ctx);
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permissions.GrantPermission("microphone");
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mosis::MicrophoneInterface mic("test.app", &permissions);
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// Note: NOT calling SimulateUserGesture()
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std::string err;
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mosis::RecordingConfig config;
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auto session = mic.StartSession(config, err);
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EXPECT_TRUE(session == nullptr);
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EXPECT_TRUE(err.find("gesture") != std::string::npos);
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return true;
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}
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```
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### Test 3: Shows Indicator
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```cpp
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bool Test_MicrophoneShowsIndicator(std::string& error_msg) {
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SandboxContext ctx;
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ctx.app_id = "test.app";
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ctx.permissions = {"microphone"};
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ctx.is_system_app = false;
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PermissionGate permissions(ctx);
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permissions.GrantPermission("microphone");
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mosis::MicrophoneInterface mic("test.app", &permissions);
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mic.SimulateUserGesture();
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EXPECT_FALSE(mic.IsIndicatorVisible());
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std::string err;
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mosis::RecordingConfig config;
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auto session = mic.StartSession(config, err);
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EXPECT_TRUE(mic.IsIndicatorVisible());
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mic.StopSession();
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EXPECT_FALSE(mic.IsIndicatorVisible());
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return true;
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}
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```
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### Test 4: Single Session Only
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```cpp
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bool Test_MicrophoneSingleSession(std::string& error_msg) {
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SandboxContext ctx;
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ctx.app_id = "test.app";
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ctx.permissions = {"microphone"};
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ctx.is_system_app = false;
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PermissionGate permissions(ctx);
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permissions.GrantPermission("microphone");
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mosis::MicrophoneInterface mic("test.app", &permissions);
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mic.SimulateUserGesture();
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std::string err;
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mosis::RecordingConfig config;
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// First session should succeed
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auto session1 = mic.StartSession(config, err);
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EXPECT_TRUE(session1 != nullptr);
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// Second session should fail
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mic.SimulateUserGesture();
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auto session2 = mic.StartSession(config, err);
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EXPECT_TRUE(session2 == nullptr);
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EXPECT_TRUE(err.find("active") != std::string::npos ||
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err.find("already") != std::string::npos);
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return true;
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}
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```
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### Test 5: Stops On App Stop
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```cpp
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bool Test_MicrophoneStopsOnShutdown(std::string& error_msg) {
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SandboxContext ctx;
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ctx.app_id = "test.app";
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ctx.permissions = {"microphone"};
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ctx.is_system_app = false;
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PermissionGate permissions(ctx);
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permissions.GrantPermission("microphone");
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mosis::MicrophoneInterface mic("test.app", &permissions);
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mic.SimulateUserGesture();
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std::string err;
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mosis::RecordingConfig config;
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auto session = mic.StartSession(config, err);
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EXPECT_TRUE(session != nullptr);
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EXPECT_TRUE(mic.HasActiveSession());
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// Simulate app stop
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mic.Shutdown();
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EXPECT_FALSE(mic.HasActiveSession());
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EXPECT_FALSE(mic.IsIndicatorVisible());
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return true;
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}
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```
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### Test 6: Lua Integration
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```cpp
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bool Test_MicrophoneLuaIntegration(std::string& error_msg) {
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SandboxContext ctx = TestContext();
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ctx.permissions = {"microphone"};
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LuaSandbox sandbox(ctx);
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PermissionGate permissions(ctx);
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permissions.GrantPermission("microphone");
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mosis::MicrophoneInterface mic("test.app", &permissions);
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mic.SimulateUserGesture();
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mosis::RegisterMicrophoneAPI(sandbox.GetState(), &mic);
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std::string script = R"lua(
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-- Test that microphone global exists
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if not microphone then
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error("microphone global not found")
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end
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if not microphone.start then
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error("microphone.start not found")
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end
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if not microphone.isActive then
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error("microphone.isActive not found")
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end
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-- isActive should be false initially
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if microphone.isActive() then
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error("microphone should not be active initially")
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end
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)lua";
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bool ok = sandbox.LoadString(script, "microphone_test");
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if (!ok) {
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error_msg = "Lua test failed: " + sandbox.GetLastError();
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return false;
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}
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return true;
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}
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```
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---
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## Acceptance Criteria
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All tests must pass:
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- [x] `Test_MicrophoneRequiresPermission` - Permission check works
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- [x] `Test_MicrophoneRequiresUserGesture` - User gesture required
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- [x] `Test_MicrophoneShowsIndicator` - Recording indicator shown/hidden
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- [x] `Test_MicrophoneSingleSession` - Only one session allowed
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- [x] `Test_MicrophoneStopsOnShutdown` - Cleanup on shutdown
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- [x] `Test_MicrophoneLuaIntegration` - Lua API works
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---
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## Dependencies
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- Milestone 1 (LuaSandbox)
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- Milestone 2 (PermissionGate + user gesture)
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- Milestone 3 (AuditLog)
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---
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## Notes
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### Desktop vs Android Implementation
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For desktop testing, MicrophoneInterface operates in mock mode:
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- Permission and gesture checks run normally
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- Indicator state is tracked but not displayed
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- No actual microphone hardware access
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- Audio buffers can be simulated for testing
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On Android, the real implementation would:
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1. Use AudioRecord API through JNI
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2. Display system-level recording indicator
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3. Handle audio hardware lifecycle
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4. Deliver audio buffers through native callbacks
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### Security Considerations
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1. **Permission**: Microphone access is a dangerous permission requiring user grant
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2. **User gesture**: Prevents background audio recording
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3. **Indicator**: User always knows when microphone is active
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4. **Single session**: Prevents resource abuse
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5. **Cleanup**: Sessions closed when app stops
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### Future Integration
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The microphone will integrate with:
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1. Voice communication in multiplayer games
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2. Voice commands/speech recognition
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3. Audio messaging features
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---
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## Next Steps
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After Milestone 12 passes:
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1. Milestone 13: Virtual Hardware - Audio Output
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@@ -25,6 +25,7 @@ add_library(mosis-sandbox STATIC
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../src/main/cpp/sandbox/network_manager.cpp
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../src/main/cpp/sandbox/websocket_manager.cpp
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../src/main/cpp/sandbox/camera_interface.cpp
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../src/main/cpp/sandbox/microphone_interface.cpp
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)
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target_include_directories(mosis-sandbox PUBLIC
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../src/main/cpp/sandbox
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@@ -15,6 +15,7 @@
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#include "network_manager.h"
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#include "websocket_manager.h"
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#include "camera_interface.h"
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#include "microphone_interface.h"
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#include <filesystem>
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#include <fstream>
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#include <sstream>
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||||
@@ -2007,6 +2008,173 @@ bool Test_CameraLuaIntegration(std::string& error_msg) {
|
||||
return true;
|
||||
}
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||||
|
||||
//=============================================================================
|
||||
// MILESTONE 12: Microphone
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||||
//=============================================================================
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||||
|
||||
bool Test_MicrophoneRequiresPermission(std::string& error_msg) {
|
||||
// Create sandbox context WITHOUT microphone permission
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||||
SandboxContext ctx;
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||||
ctx.app_id = "test.app";
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||||
ctx.permissions = {}; // No microphone permission declared
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||||
ctx.is_system_app = false;
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||||
PermissionGate permissions(ctx);
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||||
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||||
mosis::MicrophoneInterface mic("test.app", &permissions);
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||||
mic.SimulateUserGesture();
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||||
|
||||
std::string err;
|
||||
mosis::RecordingConfig config;
|
||||
auto session = mic.StartSession(config, err);
|
||||
|
||||
EXPECT_TRUE(session == nullptr);
|
||||
EXPECT_TRUE(err.find("permission") != std::string::npos);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool Test_MicrophoneRequiresUserGesture(std::string& error_msg) {
|
||||
// Create sandbox context WITH microphone permission
|
||||
SandboxContext ctx;
|
||||
ctx.app_id = "test.app";
|
||||
ctx.permissions = {"microphone"};
|
||||
ctx.is_system_app = false;
|
||||
PermissionGate permissions(ctx);
|
||||
permissions.GrantPermission("microphone");
|
||||
|
||||
mosis::MicrophoneInterface mic("test.app", &permissions);
|
||||
// Note: NOT calling SimulateUserGesture()
|
||||
|
||||
std::string err;
|
||||
mosis::RecordingConfig config;
|
||||
auto session = mic.StartSession(config, err);
|
||||
|
||||
EXPECT_TRUE(session == nullptr);
|
||||
EXPECT_TRUE(err.find("gesture") != std::string::npos);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool Test_MicrophoneShowsIndicator(std::string& error_msg) {
|
||||
SandboxContext ctx;
|
||||
ctx.app_id = "test.app";
|
||||
ctx.permissions = {"microphone"};
|
||||
ctx.is_system_app = false;
|
||||
PermissionGate permissions(ctx);
|
||||
permissions.GrantPermission("microphone");
|
||||
|
||||
mosis::MicrophoneInterface mic("test.app", &permissions);
|
||||
mic.SimulateUserGesture();
|
||||
|
||||
EXPECT_FALSE(mic.IsIndicatorVisible());
|
||||
|
||||
std::string err;
|
||||
mosis::RecordingConfig config;
|
||||
auto session = mic.StartSession(config, err);
|
||||
|
||||
EXPECT_TRUE(session != nullptr);
|
||||
EXPECT_TRUE(mic.IsIndicatorVisible());
|
||||
|
||||
mic.StopSession();
|
||||
|
||||
EXPECT_FALSE(mic.IsIndicatorVisible());
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool Test_MicrophoneSingleSession(std::string& error_msg) {
|
||||
SandboxContext ctx;
|
||||
ctx.app_id = "test.app";
|
||||
ctx.permissions = {"microphone"};
|
||||
ctx.is_system_app = false;
|
||||
PermissionGate permissions(ctx);
|
||||
permissions.GrantPermission("microphone");
|
||||
|
||||
mosis::MicrophoneInterface mic("test.app", &permissions);
|
||||
mic.SimulateUserGesture();
|
||||
|
||||
std::string err;
|
||||
mosis::RecordingConfig config;
|
||||
|
||||
// First session should succeed
|
||||
auto session1 = mic.StartSession(config, err);
|
||||
EXPECT_TRUE(session1 != nullptr);
|
||||
|
||||
// Second session should fail
|
||||
mic.SimulateUserGesture();
|
||||
auto session2 = mic.StartSession(config, err);
|
||||
EXPECT_TRUE(session2 == nullptr);
|
||||
EXPECT_TRUE(err.find("active") != std::string::npos ||
|
||||
err.find("already") != std::string::npos);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool Test_MicrophoneStopsOnShutdown(std::string& error_msg) {
|
||||
SandboxContext ctx;
|
||||
ctx.app_id = "test.app";
|
||||
ctx.permissions = {"microphone"};
|
||||
ctx.is_system_app = false;
|
||||
PermissionGate permissions(ctx);
|
||||
permissions.GrantPermission("microphone");
|
||||
|
||||
mosis::MicrophoneInterface mic("test.app", &permissions);
|
||||
mic.SimulateUserGesture();
|
||||
|
||||
std::string err;
|
||||
mosis::RecordingConfig config;
|
||||
auto session = mic.StartSession(config, err);
|
||||
|
||||
EXPECT_TRUE(session != nullptr);
|
||||
EXPECT_TRUE(mic.HasActiveSession());
|
||||
|
||||
// Simulate app stop
|
||||
mic.Shutdown();
|
||||
|
||||
EXPECT_FALSE(mic.HasActiveSession());
|
||||
EXPECT_FALSE(mic.IsIndicatorVisible());
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
bool Test_MicrophoneLuaIntegration(std::string& error_msg) {
|
||||
SandboxContext ctx = TestContext();
|
||||
ctx.permissions = {"microphone"};
|
||||
LuaSandbox sandbox(ctx);
|
||||
|
||||
PermissionGate permissions(ctx);
|
||||
permissions.GrantPermission("microphone");
|
||||
|
||||
mosis::MicrophoneInterface mic("test.app", &permissions);
|
||||
mic.SimulateUserGesture();
|
||||
mosis::RegisterMicrophoneAPI(sandbox.GetState(), &mic);
|
||||
|
||||
std::string script = R"lua(
|
||||
-- Test that microphone global exists
|
||||
if not microphone then
|
||||
error("microphone global not found")
|
||||
end
|
||||
if not microphone.start then
|
||||
error("microphone.start not found")
|
||||
end
|
||||
if not microphone.isActive then
|
||||
error("microphone.isActive not found")
|
||||
end
|
||||
|
||||
-- isActive should be false initially
|
||||
if microphone.isActive() then
|
||||
error("microphone should not be active initially")
|
||||
end
|
||||
)lua";
|
||||
|
||||
bool ok = sandbox.LoadString(script, "microphone_test");
|
||||
if (!ok) {
|
||||
error_msg = "Lua test failed: " + sandbox.GetLastError();
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
//=============================================================================
|
||||
// MAIN
|
||||
//=============================================================================
|
||||
@@ -2156,6 +2324,14 @@ int main(int argc, char* argv[]) {
|
||||
harness.AddTest("CameraStopsOnShutdown", Test_CameraStopsOnShutdown);
|
||||
harness.AddTest("CameraLuaIntegration", Test_CameraLuaIntegration);
|
||||
|
||||
// Milestone 12: Microphone
|
||||
harness.AddTest("MicrophoneRequiresPermission", Test_MicrophoneRequiresPermission);
|
||||
harness.AddTest("MicrophoneRequiresUserGesture", Test_MicrophoneRequiresUserGesture);
|
||||
harness.AddTest("MicrophoneShowsIndicator", Test_MicrophoneShowsIndicator);
|
||||
harness.AddTest("MicrophoneSingleSession", Test_MicrophoneSingleSession);
|
||||
harness.AddTest("MicrophoneStopsOnShutdown", Test_MicrophoneStopsOnShutdown);
|
||||
harness.AddTest("MicrophoneLuaIntegration", Test_MicrophoneLuaIntegration);
|
||||
|
||||
// Run tests
|
||||
auto results = harness.Run(filter);
|
||||
|
||||
|
||||
457
src/main/cpp/sandbox/microphone_interface.cpp
Normal file
457
src/main/cpp/sandbox/microphone_interface.cpp
Normal file
@@ -0,0 +1,457 @@
|
||||
#include "microphone_interface.h"
|
||||
#include "permission_gate.h"
|
||||
#include <lua.hpp>
|
||||
|
||||
namespace mosis {
|
||||
|
||||
// RecordingSession implementation
|
||||
|
||||
RecordingSession::RecordingSession(int id, const RecordingConfig& config)
|
||||
: m_id(id)
|
||||
, m_config(config)
|
||||
, m_active(true)
|
||||
{
|
||||
// Initialize accumulated buffer with config
|
||||
m_accumulated.sample_rate = config.sample_rate;
|
||||
m_accumulated.channels = config.channels;
|
||||
m_accumulated.format = config.format;
|
||||
m_accumulated.sample_count = 0;
|
||||
}
|
||||
|
||||
RecordingSession::~RecordingSession() {
|
||||
Stop();
|
||||
}
|
||||
|
||||
AudioBuffer RecordingSession::GetBuffer() {
|
||||
std::lock_guard<std::mutex> lock(m_mutex);
|
||||
|
||||
// Return copy of accumulated buffer
|
||||
AudioBuffer buffer = m_accumulated;
|
||||
buffer.timestamp_ms = static_cast<uint64_t>(
|
||||
std::chrono::duration_cast<std::chrono::milliseconds>(
|
||||
std::chrono::steady_clock::now().time_since_epoch()
|
||||
).count()
|
||||
);
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
void RecordingSession::Stop() {
|
||||
m_active = false;
|
||||
}
|
||||
|
||||
void RecordingSession::SimulateBuffer(const AudioBuffer& buffer) {
|
||||
std::lock_guard<std::mutex> lock(m_mutex);
|
||||
|
||||
if (!m_active) {
|
||||
return;
|
||||
}
|
||||
|
||||
// Append to accumulated buffer
|
||||
m_accumulated.data.insert(
|
||||
m_accumulated.data.end(),
|
||||
buffer.data.begin(),
|
||||
buffer.data.end()
|
||||
);
|
||||
m_accumulated.sample_count += buffer.sample_count;
|
||||
|
||||
if (m_on_buffer) {
|
||||
m_on_buffer(buffer);
|
||||
}
|
||||
}
|
||||
|
||||
// MicrophoneInterface implementation
|
||||
|
||||
MicrophoneInterface::MicrophoneInterface(const std::string& app_id, PermissionGate* permissions)
|
||||
: m_app_id(app_id)
|
||||
, m_permissions(permissions)
|
||||
, m_mock_mode(true)
|
||||
{
|
||||
}
|
||||
|
||||
MicrophoneInterface::~MicrophoneInterface() {
|
||||
Shutdown();
|
||||
}
|
||||
|
||||
void MicrophoneInterface::SimulateUserGesture() {
|
||||
m_last_gesture_time = std::chrono::steady_clock::now();
|
||||
m_has_gesture = true;
|
||||
}
|
||||
|
||||
bool MicrophoneInterface::HasRecentUserGesture() const {
|
||||
if (!m_has_gesture) {
|
||||
return false;
|
||||
}
|
||||
|
||||
auto now = std::chrono::steady_clock::now();
|
||||
auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(
|
||||
now - m_last_gesture_time
|
||||
).count();
|
||||
|
||||
return elapsed < GESTURE_VALIDITY_MS;
|
||||
}
|
||||
|
||||
void MicrophoneInterface::ShowIndicator() {
|
||||
m_indicator_visible = true;
|
||||
// In real implementation: notify system UI to show recording indicator
|
||||
}
|
||||
|
||||
void MicrophoneInterface::HideIndicator() {
|
||||
m_indicator_visible = false;
|
||||
// In real implementation: notify system UI to hide recording indicator
|
||||
}
|
||||
|
||||
std::shared_ptr<RecordingSession> MicrophoneInterface::StartSession(const RecordingConfig& config, std::string& error) {
|
||||
std::lock_guard<std::mutex> lock(m_mutex);
|
||||
|
||||
// Check permission
|
||||
if (m_permissions && !m_permissions->HasPermission("microphone")) {
|
||||
error = "Microphone permission not granted";
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
// Check user gesture
|
||||
if (!HasRecentUserGesture()) {
|
||||
error = "Microphone requires recent user gesture";
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
// Check for existing session
|
||||
if (m_active_session && m_active_session->IsActive()) {
|
||||
error = "Recording session already active";
|
||||
return nullptr;
|
||||
}
|
||||
|
||||
// Validate sample rate
|
||||
int sample_rate = config.sample_rate;
|
||||
if (sample_rate != 8000 && sample_rate != 16000 &&
|
||||
sample_rate != 22050 && sample_rate != 44100 && sample_rate != 48000) {
|
||||
sample_rate = 44100; // Default to 44100 if invalid
|
||||
}
|
||||
|
||||
// Validate channels
|
||||
RecordingConfig validated_config = config;
|
||||
validated_config.sample_rate = sample_rate;
|
||||
if (validated_config.channels < 1) validated_config.channels = 1;
|
||||
if (validated_config.channels > 2) validated_config.channels = 2;
|
||||
|
||||
// Create new session
|
||||
int id = m_next_session_id++;
|
||||
m_active_session = std::make_shared<RecordingSession>(id, validated_config);
|
||||
|
||||
// Show recording indicator
|
||||
ShowIndicator();
|
||||
|
||||
// In mock mode, session is created but no real microphone access
|
||||
// In real implementation: start audio recording hardware
|
||||
|
||||
return m_active_session;
|
||||
}
|
||||
|
||||
void MicrophoneInterface::StopSession() {
|
||||
std::lock_guard<std::mutex> lock(m_mutex);
|
||||
|
||||
if (m_active_session) {
|
||||
m_active_session->Stop();
|
||||
m_active_session.reset();
|
||||
HideIndicator();
|
||||
}
|
||||
}
|
||||
|
||||
bool MicrophoneInterface::HasActiveSession() const {
|
||||
std::lock_guard<std::mutex> lock(m_mutex);
|
||||
return m_active_session && m_active_session->IsActive();
|
||||
}
|
||||
|
||||
bool MicrophoneInterface::IsIndicatorVisible() const {
|
||||
return m_indicator_visible;
|
||||
}
|
||||
|
||||
void MicrophoneInterface::Shutdown() {
|
||||
StopSession();
|
||||
}
|
||||
|
||||
// Lua API implementation
|
||||
|
||||
// Userdata for RecordingSession
|
||||
struct LuaRecordingSession {
|
||||
std::weak_ptr<RecordingSession> session;
|
||||
int id;
|
||||
};
|
||||
|
||||
static const char* RECORDING_SESSION_MT = "mosis.RecordingSession";
|
||||
|
||||
// Get MicrophoneInterface from upvalue
|
||||
static MicrophoneInterface* GetMicrophoneInterface(lua_State* L) {
|
||||
return static_cast<MicrophoneInterface*>(lua_touserdata(L, lua_upvalueindex(1)));
|
||||
}
|
||||
|
||||
// Get RecordingSession from userdata
|
||||
static LuaRecordingSession* GetRecordingSession(lua_State* L, int index) {
|
||||
return static_cast<LuaRecordingSession*>(luaL_checkudata(L, index, RECORDING_SESSION_MT));
|
||||
}
|
||||
|
||||
// session:getBuffer() -> buffer or nil
|
||||
static int L_session_getBuffer(lua_State* L) {
|
||||
LuaRecordingSession* lrs = GetRecordingSession(L, 1);
|
||||
|
||||
auto session = lrs->session.lock();
|
||||
if (!session || !session->IsActive()) {
|
||||
lua_pushnil(L);
|
||||
return 1;
|
||||
}
|
||||
|
||||
AudioBuffer buffer = session->GetBuffer();
|
||||
|
||||
// Return buffer as table
|
||||
lua_newtable(L);
|
||||
|
||||
// buffer.sampleRate
|
||||
lua_pushinteger(L, buffer.sample_rate);
|
||||
lua_setfield(L, -2, "sampleRate");
|
||||
|
||||
// buffer.channels
|
||||
lua_pushinteger(L, buffer.channels);
|
||||
lua_setfield(L, -2, "channels");
|
||||
|
||||
// buffer.sampleCount
|
||||
lua_pushinteger(L, buffer.sample_count);
|
||||
lua_setfield(L, -2, "sampleCount");
|
||||
|
||||
// buffer.timestamp
|
||||
lua_pushinteger(L, static_cast<lua_Integer>(buffer.timestamp_ms));
|
||||
lua_setfield(L, -2, "timestamp");
|
||||
|
||||
// buffer.data (as string for binary data)
|
||||
if (!buffer.data.empty()) {
|
||||
lua_pushlstring(L, reinterpret_cast<const char*>(buffer.data.data()), buffer.data.size());
|
||||
} else {
|
||||
lua_pushstring(L, "");
|
||||
}
|
||||
lua_setfield(L, -2, "data");
|
||||
|
||||
// buffer.format
|
||||
lua_pushstring(L, buffer.format == AudioFormat::PCM_FLOAT ? "float" : "pcm16");
|
||||
lua_setfield(L, -2, "format");
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
// session:stop()
|
||||
static int L_session_stop(lua_State* L) {
|
||||
LuaRecordingSession* lrs = GetRecordingSession(L, 1);
|
||||
|
||||
auto session = lrs->session.lock();
|
||||
if (session) {
|
||||
session->Stop();
|
||||
}
|
||||
|
||||
// Also stop via interface to hide indicator
|
||||
MicrophoneInterface* mic = static_cast<MicrophoneInterface*>(
|
||||
lua_touserdata(L, lua_upvalueindex(1))
|
||||
);
|
||||
if (mic) {
|
||||
mic->StopSession();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// session:on(event, callback)
|
||||
static int L_session_on(lua_State* L) {
|
||||
LuaRecordingSession* lrs = GetRecordingSession(L, 1);
|
||||
|
||||
auto session = lrs->session.lock();
|
||||
if (!session) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
const char* event = luaL_checkstring(L, 2);
|
||||
luaL_checktype(L, 3, LUA_TFUNCTION);
|
||||
|
||||
// For now, simplified implementation that doesn't store callbacks
|
||||
// A full implementation would need to store refs and call them on events
|
||||
|
||||
lua_pushboolean(L, 1);
|
||||
return 1;
|
||||
}
|
||||
|
||||
// session:isActive() -> bool
|
||||
static int L_session_isActive(lua_State* L) {
|
||||
LuaRecordingSession* lrs = GetRecordingSession(L, 1);
|
||||
|
||||
auto session = lrs->session.lock();
|
||||
lua_pushboolean(L, session && session->IsActive() ? 1 : 0);
|
||||
return 1;
|
||||
}
|
||||
|
||||
// RecordingSession garbage collection
|
||||
static int L_session_gc(lua_State* L) {
|
||||
LuaRecordingSession* lrs = GetRecordingSession(L, 1);
|
||||
|
||||
auto session = lrs->session.lock();
|
||||
if (session && session->IsActive()) {
|
||||
session->Stop();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
// microphone.start(config) -> session, error
|
||||
static int L_microphone_start(lua_State* L) {
|
||||
MicrophoneInterface* mic = GetMicrophoneInterface(L);
|
||||
if (!mic) {
|
||||
lua_pushnil(L);
|
||||
lua_pushstring(L, "MicrophoneInterface not available");
|
||||
return 2;
|
||||
}
|
||||
|
||||
RecordingConfig config;
|
||||
|
||||
// Parse config table if provided
|
||||
if (lua_istable(L, 1)) {
|
||||
// sampleRate
|
||||
lua_getfield(L, 1, "sampleRate");
|
||||
if (lua_isnumber(L, -1)) {
|
||||
config.sample_rate = static_cast<int>(lua_tointeger(L, -1));
|
||||
}
|
||||
lua_pop(L, 1);
|
||||
|
||||
// channels
|
||||
lua_getfield(L, 1, "channels");
|
||||
if (lua_isnumber(L, -1)) {
|
||||
config.channels = static_cast<int>(lua_tointeger(L, -1));
|
||||
}
|
||||
lua_pop(L, 1);
|
||||
|
||||
// format
|
||||
lua_getfield(L, 1, "format");
|
||||
if (lua_isstring(L, -1)) {
|
||||
std::string fmt = lua_tostring(L, -1);
|
||||
if (fmt == "float" || fmt == "pcmfloat") {
|
||||
config.format = AudioFormat::PCM_FLOAT;
|
||||
} else {
|
||||
config.format = AudioFormat::PCM_16BIT;
|
||||
}
|
||||
}
|
||||
lua_pop(L, 1);
|
||||
}
|
||||
|
||||
std::string error;
|
||||
auto session = mic->StartSession(config, error);
|
||||
|
||||
if (!session) {
|
||||
lua_pushnil(L);
|
||||
lua_pushstring(L, error.c_str());
|
||||
return 2;
|
||||
}
|
||||
|
||||
// Create userdata
|
||||
LuaRecordingSession* lrs = static_cast<LuaRecordingSession*>(
|
||||
lua_newuserdata(L, sizeof(LuaRecordingSession))
|
||||
);
|
||||
lrs->session = session;
|
||||
lrs->id = session->GetId();
|
||||
|
||||
// Set metatable
|
||||
luaL_getmetatable(L, RECORDING_SESSION_MT);
|
||||
lua_setmetatable(L, -2);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
// microphone.isActive() -> bool
|
||||
static int L_microphone_isActive(lua_State* L) {
|
||||
MicrophoneInterface* mic = GetMicrophoneInterface(L);
|
||||
if (!mic) {
|
||||
lua_pushboolean(L, 0);
|
||||
return 1;
|
||||
}
|
||||
|
||||
lua_pushboolean(L, mic->HasActiveSession() ? 1 : 0);
|
||||
return 1;
|
||||
}
|
||||
|
||||
// microphone.stop()
|
||||
static int L_microphone_stop(lua_State* L) {
|
||||
MicrophoneInterface* mic = GetMicrophoneInterface(L);
|
||||
if (mic) {
|
||||
mic->StopSession();
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
// Helper to set a global in the real _G (bypassing any proxy)
|
||||
static void SetGlobalInRealG(lua_State* L, const char* name) {
|
||||
lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS);
|
||||
|
||||
if (lua_getmetatable(L, -1)) {
|
||||
lua_getfield(L, -1, "__index");
|
||||
if (lua_istable(L, -1)) {
|
||||
lua_pushvalue(L, -4);
|
||||
lua_setfield(L, -2, name);
|
||||
lua_pop(L, 4);
|
||||
return;
|
||||
}
|
||||
lua_pop(L, 2);
|
||||
}
|
||||
|
||||
lua_pushvalue(L, -2);
|
||||
lua_setfield(L, -2, name);
|
||||
lua_pop(L, 2);
|
||||
}
|
||||
|
||||
void RegisterMicrophoneAPI(lua_State* L, MicrophoneInterface* microphone) {
|
||||
// Create RecordingSession metatable
|
||||
luaL_newmetatable(L, RECORDING_SESSION_MT);
|
||||
|
||||
lua_pushstring(L, "__index");
|
||||
lua_newtable(L);
|
||||
|
||||
// Methods with microphone interface as upvalue for stop
|
||||
lua_pushlightuserdata(L, microphone);
|
||||
lua_pushcclosure(L, L_session_getBuffer, 1);
|
||||
lua_setfield(L, -2, "getBuffer");
|
||||
|
||||
lua_pushlightuserdata(L, microphone);
|
||||
lua_pushcclosure(L, L_session_stop, 1);
|
||||
lua_setfield(L, -2, "stop");
|
||||
|
||||
lua_pushcfunction(L, L_session_on);
|
||||
lua_setfield(L, -2, "on");
|
||||
|
||||
lua_pushcfunction(L, L_session_isActive);
|
||||
lua_setfield(L, -2, "isActive");
|
||||
|
||||
lua_settable(L, -3); // Set __index
|
||||
|
||||
// GC metamethod
|
||||
lua_pushstring(L, "__gc");
|
||||
lua_pushcfunction(L, L_session_gc);
|
||||
lua_settable(L, -3);
|
||||
|
||||
lua_pop(L, 1); // Pop metatable
|
||||
|
||||
// Create microphone table
|
||||
lua_newtable(L);
|
||||
|
||||
// microphone.start
|
||||
lua_pushlightuserdata(L, microphone);
|
||||
lua_pushcclosure(L, L_microphone_start, 1);
|
||||
lua_setfield(L, -2, "start");
|
||||
|
||||
// microphone.isActive
|
||||
lua_pushlightuserdata(L, microphone);
|
||||
lua_pushcclosure(L, L_microphone_isActive, 1);
|
||||
lua_setfield(L, -2, "isActive");
|
||||
|
||||
// microphone.stop
|
||||
lua_pushlightuserdata(L, microphone);
|
||||
lua_pushcclosure(L, L_microphone_stop, 1);
|
||||
lua_setfield(L, -2, "stop");
|
||||
|
||||
// Set as global
|
||||
SetGlobalInRealG(L, "microphone");
|
||||
}
|
||||
|
||||
} // namespace mosis
|
||||
120
src/main/cpp/sandbox/microphone_interface.h
Normal file
120
src/main/cpp/sandbox/microphone_interface.h
Normal file
@@ -0,0 +1,120 @@
|
||||
#pragma once
|
||||
|
||||
#include <string>
|
||||
#include <memory>
|
||||
#include <functional>
|
||||
#include <mutex>
|
||||
#include <atomic>
|
||||
#include <vector>
|
||||
#include <chrono>
|
||||
|
||||
struct lua_State;
|
||||
|
||||
namespace mosis {
|
||||
|
||||
class PermissionGate;
|
||||
|
||||
enum class AudioFormat {
|
||||
PCM_16BIT,
|
||||
PCM_FLOAT
|
||||
};
|
||||
|
||||
struct RecordingConfig {
|
||||
int sample_rate = 44100; // 8000, 16000, 22050, 44100, 48000
|
||||
int channels = 1; // 1 (mono) or 2 (stereo)
|
||||
AudioFormat format = AudioFormat::PCM_16BIT;
|
||||
};
|
||||
|
||||
struct AudioBuffer {
|
||||
std::vector<uint8_t> data;
|
||||
int sample_rate = 0;
|
||||
int channels = 0;
|
||||
AudioFormat format = AudioFormat::PCM_16BIT;
|
||||
uint64_t timestamp_ms = 0;
|
||||
int sample_count = 0;
|
||||
};
|
||||
|
||||
class RecordingSession {
|
||||
public:
|
||||
using BufferCallback = std::function<void(const AudioBuffer& buffer)>;
|
||||
|
||||
RecordingSession(int id, const RecordingConfig& config);
|
||||
~RecordingSession();
|
||||
|
||||
int GetId() const { return m_id; }
|
||||
const RecordingConfig& GetConfig() const { return m_config; }
|
||||
bool IsActive() const { return m_active; }
|
||||
|
||||
// Get accumulated audio data
|
||||
AudioBuffer GetBuffer();
|
||||
|
||||
// Set buffer callback (for streaming)
|
||||
void SetOnBuffer(BufferCallback cb) { m_on_buffer = std::move(cb); }
|
||||
|
||||
// Stop recording
|
||||
void Stop();
|
||||
|
||||
// For mock mode - simulate audio data arrival
|
||||
void SimulateBuffer(const AudioBuffer& buffer);
|
||||
|
||||
private:
|
||||
int m_id;
|
||||
RecordingConfig m_config;
|
||||
std::atomic<bool> m_active{true};
|
||||
BufferCallback m_on_buffer;
|
||||
AudioBuffer m_accumulated;
|
||||
mutable std::mutex m_mutex;
|
||||
};
|
||||
|
||||
class MicrophoneInterface {
|
||||
public:
|
||||
MicrophoneInterface(const std::string& app_id, PermissionGate* permissions);
|
||||
~MicrophoneInterface();
|
||||
|
||||
// Start recording session
|
||||
// Returns session on success, nullptr on failure (sets error)
|
||||
// Requires microphone permission and user gesture
|
||||
std::shared_ptr<RecordingSession> StartSession(const RecordingConfig& config, std::string& error);
|
||||
|
||||
// Stop active session
|
||||
void StopSession();
|
||||
|
||||
// Check if session is active
|
||||
bool HasActiveSession() const;
|
||||
|
||||
// Check if recording indicator should be shown
|
||||
bool IsIndicatorVisible() const;
|
||||
|
||||
// Cleanup on app stop
|
||||
void Shutdown();
|
||||
|
||||
// For testing
|
||||
void SetMockMode(bool enabled) { m_mock_mode = enabled; }
|
||||
bool IsMockMode() const { return m_mock_mode; }
|
||||
|
||||
// Simulate user gesture for testing
|
||||
void SimulateUserGesture();
|
||||
|
||||
private:
|
||||
std::string m_app_id;
|
||||
PermissionGate* m_permissions;
|
||||
std::shared_ptr<RecordingSession> m_active_session;
|
||||
mutable std::mutex m_mutex;
|
||||
bool m_mock_mode = true;
|
||||
std::atomic<bool> m_indicator_visible{false};
|
||||
int m_next_session_id = 1;
|
||||
|
||||
// Track user gesture timing
|
||||
std::chrono::steady_clock::time_point m_last_gesture_time;
|
||||
bool m_has_gesture = false;
|
||||
static constexpr int GESTURE_VALIDITY_MS = 5000; // 5 seconds
|
||||
|
||||
bool HasRecentUserGesture() const;
|
||||
void ShowIndicator();
|
||||
void HideIndicator();
|
||||
};
|
||||
|
||||
// Register microphone.* APIs as globals
|
||||
void RegisterMicrophoneAPI(lua_State* L, MicrophoneInterface* microphone);
|
||||
|
||||
} // namespace mosis
|
||||
Reference in New Issue
Block a user