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d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
109 lines
4.1 KiB
C++
109 lines
4.1 KiB
C++
/**************************************************************************/
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/* audio_stream_preview.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_PREVIEW_H
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#define AUDIO_STREAM_PREVIEW_H
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#include "core/os/thread.h"
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#include "core/templates/safe_refcount.h"
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#include "scene/main/node.h"
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#include "servers/audio/audio_stream.h"
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class AudioStreamPreview : public RefCounted {
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GDCLASS(AudioStreamPreview, RefCounted);
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friend class AudioStream;
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Vector<uint8_t> preview;
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float length;
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friend class AudioStreamPreviewGenerator;
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uint64_t version = 1;
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public:
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uint64_t get_version() const { return version; }
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float get_length() const;
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float get_max(float p_time, float p_time_next) const;
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float get_min(float p_time, float p_time_next) const;
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AudioStreamPreview();
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};
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class AudioStreamPreviewGenerator : public Node {
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GDCLASS(AudioStreamPreviewGenerator, Node);
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static AudioStreamPreviewGenerator *singleton;
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struct Preview {
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Ref<AudioStreamPreview> preview;
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Ref<AudioStream> base_stream;
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Ref<AudioStreamPlayback> playback;
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SafeFlag generating;
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ObjectID id;
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Thread *thread = nullptr;
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// Needed for the bookkeeping of the Map
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void operator=(const Preview &p_rhs) {
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preview = p_rhs.preview;
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base_stream = p_rhs.base_stream;
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playback = p_rhs.playback;
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generating.set_to(generating.is_set());
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id = p_rhs.id;
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thread = p_rhs.thread;
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}
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Preview(const Preview &p_rhs) {
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preview = p_rhs.preview;
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base_stream = p_rhs.base_stream;
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playback = p_rhs.playback;
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generating.set_to(generating.is_set());
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id = p_rhs.id;
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thread = p_rhs.thread;
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}
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Preview() {}
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};
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HashMap<ObjectID, Preview> previews;
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static void _preview_thread(void *p_preview);
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void _update_emit(ObjectID p_id);
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protected:
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void _notification(int p_what);
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static void _bind_methods();
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public:
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static AudioStreamPreviewGenerator *get_singleton() { return singleton; }
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Ref<AudioStreamPreview> generate_preview(const Ref<AudioStream> &p_stream);
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AudioStreamPreviewGenerator();
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};
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#endif // AUDIO_STREAM_PREVIEW_H
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