Services: Move to Userland/Services/

2025-06-01 07:28:11 +00:00 · 2021-01-12 12:23:01 +01:00 · 2021-01-12 12:23:01 +01:00 · c7ac7e6eaf
commit c7ac7e6eaf
parent 4055b03291
170 changed files with 4 additions and 4 deletions
--- a/Userland/Services/AudioServer/Mixer.h
+++ b/Userland/Services/AudioServer/Mixer.h
@ -0,0 +1,144 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include "ClientConnection.h"
+#include <AK/Atomic.h>
+#include <AK/Badge.h>
+#include <AK/ByteBuffer.h>
+#include <AK/NonnullRefPtrVector.h>
+#include <AK/Queue.h>
+#include <AK/RefCounted.h>
+#include <AK/WeakPtr.h>
+#include <LibAudio/Buffer.h>
+#include <LibCore/File.h>
+#include <LibThread/Lock.h>
+#include <LibThread/Thread.h>
+
+namespace AudioServer {
+
+class ClientConnection;
+
+class BufferQueue : public RefCounted<BufferQueue> {
+public:
+    explicit BufferQueue(ClientConnection&);
+    ~BufferQueue() { }
+
+    bool is_full() const { return m_queue.size() >= 3; }
+    void enqueue(NonnullRefPtr<Audio::Buffer>&&);
+
+    bool get_next_sample(Audio::Sample& sample)
+    {
+        if (m_paused)
+            return false;
+
+        while (!m_current && !m_queue.is_empty())
+            m_current = m_queue.dequeue();
+
+        if (!m_current)
+            return false;
+
+        sample = m_current->samples()[m_position++];
+        --m_remaining_samples;
+        ++m_played_samples;
+
+        if (m_position >= m_current->sample_count()) {
+            m_client->did_finish_playing_buffer({}, m_current->shbuf_id());
+            m_current = nullptr;
+            m_position = 0;
+        }
+        return true;
+    }
+
+    ClientConnection* client() { return m_client.ptr(); }
+
+    void clear(bool paused = false)
+    {
+        m_queue.clear();
+        m_position = 0;
+        m_remaining_samples = 0;
+        m_played_samples = 0;
+        m_current = nullptr;
+        m_paused = paused;
+    }
+
+    void set_paused(bool paused)
+    {
+        m_paused = paused;
+    }
+
+    int get_remaining_samples() const { return m_remaining_samples; }
+    int get_played_samples() const { return m_played_samples; }
+    int get_playing_buffer() const
+    {
+        if (m_current)
+            return m_current->shbuf_id();
+        return -1;
+    }
+
+private:
+    RefPtr<Audio::Buffer> m_current;
+    Queue<NonnullRefPtr<Audio::Buffer>> m_queue;
+    int m_position { 0 };
+    int m_remaining_samples { 0 };
+    int m_played_samples { 0 };
+    bool m_paused { false };
+    WeakPtr<ClientConnection> m_client;
+};
+
+class Mixer : public Core::Object {
+    C_OBJECT(Mixer)
+public:
+    Mixer();
+    virtual ~Mixer() override;
+
+    NonnullRefPtr<BufferQueue> create_queue(ClientConnection&);
+
+    int main_volume() const { return m_main_volume; }
+    void set_main_volume(int volume);
+
+    bool is_muted() const { return m_muted; }
+    void set_muted(bool);
+
+private:
+    Vector<NonnullRefPtr<BufferQueue>> m_pending_mixing;
+    Atomic<bool> m_added_queue { false };
+    pthread_mutex_t m_pending_mutex;
+    pthread_cond_t m_pending_cond;
+
+    RefPtr<Core::File> m_device;
+
+    NonnullRefPtr<LibThread::Thread> m_sound_thread;
+
+    bool m_muted { false };
+    int m_main_volume { 100 };
+
+    u8* m_zero_filled_buffer { nullptr };
+
+    void mix();
+};
+}