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https://github.com/godotengine/godot
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4383b5ab1e
* Make AudioStreamPolyphonic not requre a polling thread (simpler, faster) * Improve error reporting in AudioStreamPlayer*::get_stream_playback() error reporting to improve usability.
120 lines
4.4 KiB
C++
120 lines
4.4 KiB
C++
/**************************************************************************/
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/* audio_stream_polyphonic.h */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#ifndef AUDIO_STREAM_POLYPHONIC_H
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#define AUDIO_STREAM_POLYPHONIC_H
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#include "core/templates/local_vector.h"
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#include "servers/audio/audio_stream.h"
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class AudioStreamPolyphonic : public AudioStream {
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GDCLASS(AudioStreamPolyphonic, AudioStream)
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int polyphony = 32;
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static void _bind_methods();
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public:
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virtual Ref<AudioStreamPlayback> instantiate_playback() override;
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virtual String get_stream_name() const override;
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virtual bool is_monophonic() const override;
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void set_polyphony(int p_voices);
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int get_polyphony() const;
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AudioStreamPolyphonic();
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};
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class AudioStreamPlaybackPolyphonic : public AudioStreamPlayback {
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GDCLASS(AudioStreamPlaybackPolyphonic, AudioStreamPlayback)
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enum {
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INTERNAL_BUFFER_LEN = 128,
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ID_MASK = 0xFFFFFFFF,
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INDEX_SHIFT = 32
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};
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struct Stream {
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SafeFlag active;
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SafeFlag pending_play;
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SafeFlag finish_request;
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float play_offset = 0;
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float pitch_scale = 1.0;
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Ref<AudioStream> stream;
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Ref<AudioStreamPlayback> stream_playback;
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float prev_volume_db = 0;
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float volume_db = 0;
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uint32_t id = 0;
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Stream() :
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active(false), pending_play(false), finish_request(false) {}
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};
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LocalVector<Stream> streams;
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AudioFrame internal_buffer[INTERNAL_BUFFER_LEN];
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bool active = false;
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uint32_t id_counter = 1;
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_FORCE_INLINE_ Stream *_find_stream(int64_t p_id);
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friend class AudioStreamPolyphonic;
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protected:
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static void _bind_methods();
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public:
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typedef int64_t ID;
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enum {
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INVALID_ID = -1
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};
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virtual void start(double p_from_pos = 0.0) override;
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virtual void stop() override;
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virtual bool is_playing() const override;
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virtual int get_loop_count() const override; //times it looped
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virtual double get_playback_position() const override;
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virtual void seek(double p_time) override;
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virtual void tag_used_streams() override;
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virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
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ID play_stream(const Ref<AudioStream> &p_stream, float p_from_offset = 0, float p_volume_db = 0, float p_pitch_scale = 1.0);
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void set_stream_volume(ID p_stream_id, float p_volume_db);
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void set_stream_pitch_scale(ID p_stream_id, float p_pitch_scale);
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bool is_stream_playing(ID p_stream_id) const;
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void stop_stream(ID p_stream_id);
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AudioStreamPlaybackPolyphonic();
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};
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#endif // AUDIO_STREAM_POLYPHONIC_H
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