1 /*************************************************************************/ 2 /* audio_stream_generator.h */ 3 /*************************************************************************/ 4 /* This file is part of: */ 5 /* GODOT ENGINE */ 6 /* https://godotengine.org */ 7 /*************************************************************************/ 8 /* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */ 9 /* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */ 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/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> instance_playback(); 54 virtual String get_stream_name() const; 55 56 virtual float get_length() const; 57 AudioStreamGenerator(); 58 }; 59 60 class AudioStreamGeneratorPlayback : public AudioStreamPlaybackResampled { 61 62 GDCLASS(AudioStreamGeneratorPlayback, AudioStreamPlaybackResampled); 63 friend class AudioStreamGenerator; 64 RingBuffer<AudioFrame> buffer; 65 int skips; 66 bool active; 67 float mixed; 68 AudioStreamGenerator *generator; 69 70 protected: 71 virtual void _mix_internal(AudioFrame *p_buffer, int p_frames); 72 virtual float get_stream_sampling_rate(); 73 74 static void _bind_methods(); 75 76 public: 77 virtual void start(float p_from_pos = 0.0); 78 virtual void stop(); 79 virtual bool is_playing() const; 80 81 virtual int get_loop_count() const; //times it looped 82 83 virtual float get_playback_position() const; 84 virtual void seek(float p_time); 85 86 bool push_frame(const Vector2 &p_frame); 87 bool can_push_buffer(int p_frames) const; 88 bool push_buffer(const PoolVector2Array &p_frames); 89 int get_frames_available() const; 90 int get_skips() const; 91 92 void clear_buffer(); 93 94 AudioStreamGeneratorPlayback(); 95 }; 96 #endif // AUDIO_STREAM_GENERATOR_H 97