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Diffstat (limited to 'scene/resources/audio_stream_polyphonic.h')
| -rw-r--r-- | scene/resources/audio_stream_polyphonic.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/scene/resources/audio_stream_polyphonic.h b/scene/resources/audio_stream_polyphonic.h new file mode 100644 index 0000000000..b5ccc7eb7f --- /dev/null +++ b/scene/resources/audio_stream_polyphonic.h @@ -0,0 +1,122 @@ +/**************************************************************************/ +/* audio_stream_polyphonic.h */ +/**************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/**************************************************************************/ +/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/**************************************************************************/ + +#ifndef AUDIO_STREAM_POLYPHONIC_H +#define AUDIO_STREAM_POLYPHONIC_H + +#include "core/templates/local_vector.h" +#include "servers/audio/audio_stream.h" + +class AudioStreamPolyphonic : public AudioStream { + GDCLASS(AudioStreamPolyphonic, AudioStream) + int polyphony = 32; + + static void _bind_methods(); + +public: + virtual Ref<AudioStreamPlayback> instantiate_playback() override; + virtual String get_stream_name() const override; + virtual bool is_monophonic() const override; + + void set_polyphony(int p_voices); + int get_polyphony() const; + + AudioStreamPolyphonic(); +}; + +class AudioStreamPlaybackPolyphonic : public AudioStreamPlayback { + GDCLASS(AudioStreamPlaybackPolyphonic, AudioStreamPlayback) + + enum { + INTERNAL_BUFFER_LEN = 128, + ID_MASK = 0xFFFFFFFF, + INDEX_SHIFT = 32 + }; + struct Stream { + SafeFlag active; + SafeFlag pending_play; + SafeFlag finish_request; + SafeFlag finalizing; + float play_offset = 0; + float pitch_scale = 1.0; + Ref<AudioStream> stream; + Ref<AudioStreamPlayback> stream_playback; + float prev_volume_db = 0; + float volume_db = 0; + uint32_t id = 0; + + Stream() : + active(false), pending_play(false), finish_request(false), finalizing(false) {} + }; + + LocalVector<Stream> streams; + AudioFrame internal_buffer[INTERNAL_BUFFER_LEN]; + + bool active = false; + uint32_t id_counter = 1; + + _FORCE_INLINE_ Stream *_find_stream(int64_t p_id); + + void _check_finalized_streams(); + + friend class AudioStreamPolyphonic; + +protected: + static void _bind_methods(); + +public: + typedef int64_t ID; + enum { + INVALID_ID = -1 + }; + + virtual void start(double p_from_pos = 0.0) override; + virtual void stop() override; + virtual bool is_playing() const override; + + virtual int get_loop_count() const override; //times it looped + + virtual double get_playback_position() const override; + virtual void seek(double p_time) override; + + virtual void tag_used_streams() override; + + virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override; + + ID play_stream(const Ref<AudioStream> &p_stream, float p_from_offset = 0, float p_volume_db = 0, float p_pitch_scale = 1.0); + void set_stream_volume(ID p_stream_id, float p_volume_db); + void set_stream_pitch_scale(ID p_stream_id, float p_pitch_scale); + bool is_stream_playing(ID p_stream_id) const; + void stop_stream(ID p_stream_id); + + AudioStreamPlaybackPolyphonic(); +}; + +#endif // AUDIO_STREAM_POLYPHONIC_H |