1 | /**************************************************************************/ |
2 | /* audio_stream_generator.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: */ |
18 | /* */ |
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 */ |
24 | /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */ |
25 | /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ |
26 | /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ |
27 | /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ |
28 | /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ |
29 | /**************************************************************************/ |
30 | |
31 | #ifndef AUDIO_STREAM_GENERATOR_H |
32 | #define AUDIO_STREAM_GENERATOR_H |
33 | |
34 | #include "core/templates/ring_buffer.h" |
35 | #include "servers/audio/audio_stream.h" |
36 | |
37 | class AudioStreamGenerator : public AudioStream { |
38 | GDCLASS(AudioStreamGenerator, AudioStream); |
39 | |
40 | float mix_rate; |
41 | float buffer_len; |
42 | |
43 | protected: |
44 | static void _bind_methods(); |
45 | |
46 | public: |
47 | void set_mix_rate(float p_mix_rate); |
48 | float get_mix_rate() const; |
49 | |
50 | void set_buffer_length(float p_seconds); |
51 | float get_buffer_length() const; |
52 | |
53 | virtual Ref<AudioStreamPlayback> instantiate_playback() override; |
54 | virtual String get_stream_name() const override; |
55 | |
56 | virtual double get_length() const override; |
57 | virtual bool is_monophonic() const override; |
58 | AudioStreamGenerator(); |
59 | }; |
60 | |
61 | class AudioStreamGeneratorPlayback : public AudioStreamPlaybackResampled { |
62 | GDCLASS(AudioStreamGeneratorPlayback, AudioStreamPlaybackResampled); |
63 | friend class AudioStreamGenerator; |
64 | RingBuffer<AudioFrame> buffer; |
65 | int skips; |
66 | bool active; |
67 | float mixed; |
68 | AudioStreamGenerator *generator = nullptr; |
69 | |
70 | protected: |
71 | virtual int _mix_internal(AudioFrame *p_buffer, int p_frames) override; |
72 | virtual float get_stream_sampling_rate() override; |
73 | |
74 | static void _bind_methods(); |
75 | |
76 | public: |
77 | virtual void start(double p_from_pos = 0.0) override; |
78 | virtual void stop() override; |
79 | virtual bool is_playing() const override; |
80 | |
81 | virtual int get_loop_count() const override; //times it looped |
82 | |
83 | virtual double get_playback_position() const override; |
84 | virtual void seek(double p_time) override; |
85 | |
86 | bool push_frame(const Vector2 &p_frame); |
87 | bool can_push_buffer(int p_frames) const; |
88 | bool push_buffer(const PackedVector2Array &p_frames); |
89 | int get_frames_available() const; |
90 | int get_skips() const; |
91 | |
92 | virtual void tag_used_streams() override; |
93 | |
94 | void clear_buffer(); |
95 | |
96 | AudioStreamGeneratorPlayback(); |
97 | }; |
98 | |
99 | #endif // AUDIO_STREAM_GENERATOR_H |
100 | |