Documentation de SFML 2.6.0

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Music.hpp
1
2//
3// SFML - Simple and Fast Multimedia Library
4// Copyright (C) 2007-2023 Laurent Gomila (laurent@sfml-dev.org)
5//
6// This software is provided 'as-is', without any express or implied warranty.
7// In no event will the authors be held liable for any damages arising from the use of this software.
8//
9// Permission is granted to anyone to use this software for any purpose,
10// including commercial applications, and to alter it and redistribute it freely,
11// subject to the following restrictions:
12//
13// 1. The origin of this software must not be misrepresented;
14// you must not claim that you wrote the original software.
15// If you use this software in a product, an acknowledgment
16// in the product documentation would be appreciated but is not required.
17//
18// 2. Altered source versions must be plainly marked as such,
19// and must not be misrepresented as being the original software.
20//
21// 3. This notice may not be removed or altered from any source distribution.
22//
24
25#ifndef SFML_MUSIC_HPP
26#define SFML_MUSIC_HPP
27
29// Headers
31#include <SFML/Audio/Export.hpp>
32#include <SFML/Audio/SoundStream.hpp>
33#include <SFML/Audio/InputSoundFile.hpp>
34#include <SFML/System/Mutex.hpp>
35#include <SFML/System/Time.hpp>
36#include <string>
37#include <vector>
38
39
40namespace sf
41{
42class InputStream;
43
48class SFML_AUDIO_API Music : public SoundStream
49{
50public:
51
56 template <typename T>
57 struct Span
58 {
64 {
65
66 }
67
75 Span(T off, T len):
76 offset(off),
77 length(len)
78 {
79
80 }
81
84 };
85
86 // Define the relevant Span types
87 typedef Span<Time> TimeSpan;
88
94
100
120 bool openFromFile(const std::string& filename);
121
143 bool openFromMemory(const void* data, std::size_t sizeInBytes);
144
165
173
190
211 void setLoopPoints(TimeSpan timePoints);
212
213protected:
214
226 virtual bool onGetData(Chunk& data);
227
234 virtual void onSeek(Time timeOffset);
235
246 virtual Int64 onLoop();
247
248private:
249
254 void initialize();
255
264 Uint64 timeToSamples(Time position) const;
265
274 Time samplesToTime(Uint64 samples) const;
275
277 // Member data
279 InputSoundFile m_file;
280 std::vector<Int16> m_samples;
281 Mutex m_mutex;
282 Span<Uint64> m_loopSpan;
283};
284
285} // namespace sf
286
287
288#endif // SFML_MUSIC_HPP
289
290
Provide read access to sound files.
Abstract class for custom file input streams.
Definition: InputStream.hpp:42
Streamed music played from an audio file.
Definition: Music.hpp:49
Music()
Default constructor.
virtual void onSeek(Time timeOffset)
Change the current playing position in the stream source.
Time getDuration() const
Get the total duration of the music.
bool openFromFile(const std::string &filename)
Open a music from an audio file.
~Music()
Destructor.
bool openFromStream(InputStream &stream)
Open a music from an audio file in a custom stream.
virtual Int64 onLoop()
Change the current playing position in the stream source to the loop offset.
TimeSpan getLoopPoints() const
Get the positions of the of the sound's looping sequence.
virtual bool onGetData(Chunk &data)
Request a new chunk of audio samples from the stream source.
void setLoopPoints(TimeSpan timePoints)
Sets the beginning and duration of the sound's looping sequence using sf::Time.
bool openFromMemory(const void *data, std::size_t sizeInBytes)
Open a music from an audio file in memory.
Blocks concurrent access to shared resources from multiple threads.
Definition: Mutex.hpp:48
Abstract base class for streamed audio sources.
Definition: SoundStream.hpp:46
Represents a time value.
Definition: Time.hpp:41
Structure defining a time range using the template type.
Definition: Music.hpp:58
T offset
The beginning offset of the time range.
Definition: Music.hpp:82
T length
The length of the time range.
Definition: Music.hpp:83
Span()
Default constructor.
Definition: Music.hpp:63
Span(T off, T len)
Initialization constructor.
Definition: Music.hpp:75
Structure defining a chunk of audio data to stream.
Definition: SoundStream.hpp:54