1/**************************************************************************/
2/* audio_effect_record.h */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
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19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#ifndef AUDIO_EFFECT_RECORD_H
32#define AUDIO_EFFECT_RECORD_H
33
34#include "core/io/file_access.h"
35#include "core/io/marshalls.h"
36#include "core/os/os.h"
37#include "core/os/thread.h"
38#include "scene/resources/audio_stream_wav.h"
39#include "servers/audio/audio_effect.h"
40#include "servers/audio_server.h"
41
42class AudioEffectRecord;
43
44class AudioEffectRecordInstance : public AudioEffectInstance {
45 GDCLASS(AudioEffectRecordInstance, AudioEffectInstance);
46 friend class AudioEffectRecord;
47
48 bool is_recording;
49 Thread io_thread;
50
51 Vector<AudioFrame> ring_buffer;
52 Vector<float> recording_data;
53
54 unsigned int ring_buffer_pos;
55 unsigned int ring_buffer_mask;
56 unsigned int ring_buffer_read_pos;
57
58 void _io_thread_process();
59 void _io_store_buffer();
60 static void _thread_callback(void *_instance);
61 void _init_recording();
62 void _update_buffer();
63 static void _update(void *userdata);
64
65public:
66 void init();
67 void finish();
68 virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) override;
69 virtual bool process_silence() const override;
70};
71
72class AudioEffectRecord : public AudioEffect {
73 GDCLASS(AudioEffectRecord, AudioEffect);
74
75 friend class AudioEffectRecordInstance;
76
77 enum {
78 IO_BUFFER_SIZE_MS = 1500
79 };
80
81 Ref<AudioEffectRecordInstance> current_instance;
82
83 AudioStreamWAV::Format format;
84
85 void ensure_thread_stopped();
86
87protected:
88 static void _bind_methods();
89
90public:
91 Ref<AudioEffectInstance> instantiate() override;
92 void set_recording_active(bool p_record);
93 bool is_recording_active() const;
94 void set_format(AudioStreamWAV::Format p_format);
95 AudioStreamWAV::Format get_format() const;
96 Ref<AudioStreamWAV> get_recording() const;
97 AudioEffectRecord();
98 ~AudioEffectRecord();
99};
100
101#endif // AUDIO_EFFECT_RECORD_H
102