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SoundStream.hpp
1 //
3 // SFML - Simple and Fast Multimedia Library
4 // Copyright (C) 2007-2015 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_SOUNDSTREAM_HPP
26 #define SFML_SOUNDSTREAM_HPP
27
29 // Headers
31 #include <SFML/Audio/Export.hpp>
32 #include <SFML/Audio/SoundSource.hpp>
33 #include <SFML/System/Thread.hpp>
34 #include <SFML/System/Time.hpp>
35 #include <SFML/System/Mutex.hpp>
36 #include <cstdlib>
37
38
39 namespace sf
40 {
45 class SFML_AUDIO_API SoundStream : public SoundSource
46 {
47 public:
48
53 struct Chunk
54 {
55 const Int16* samples;
56 std::size_t sampleCount;
57 };
58
63 virtual ~SoundStream();
64
77 void play();
78
88 void pause();
89
100 void stop();
101
110 unsigned int getChannelCount() const;
111
121 unsigned int getSampleRate() const;
122
129 Status getStatus() const;
130
144 void setPlayingOffset(Time timeOffset);
145
154 Time getPlayingOffset() const;
155
169 void setLoop(bool loop);
170
179 bool getLoop() const;
180
181 protected:
182
189 SoundStream();
190
205 void initialize(unsigned int channelCount, unsigned int sampleRate);
206
224 virtual bool onGetData(Chunk& data) = 0;
225
235 virtual void onSeek(Time timeOffset) = 0;
236
237 private:
238
246 void streamData();
247
261 bool fillAndPushBuffer(unsigned int bufferNum);
262
272 bool fillQueue();
273
280 void clearQueue();
281
282 enum
283 {
284 BufferCount = 3
285 };
286
288 // Member data
290 Thread m_thread;
291 mutable Mutex m_threadMutex;
292 Status m_threadStartState;
293 bool m_isStreaming;
294 unsigned int m_buffers[BufferCount];
295 unsigned int m_channelCount;
296 unsigned int m_sampleRate;
297 Uint32 m_format;
298 bool m_loop;
299 Uint64 m_samplesProcessed;
300 bool m_endBuffers[BufferCount];
301 };
302
303 } // namespace sf
304
305
306 #endif // SFML_SOUNDSTREAM_HPP
307
308
sf::SoundStream::Chunk
Structure defining a chunk of audio data to stream.
Definition: SoundStream.hpp:53
sf::Mutex
Blocks concurrent access to shared resources from multiple threads.
Definition: Mutex.hpp:47
sf::Time
Represents a time value.
Definition: Time.hpp:40
sf::SoundStream::Chunk::samples
const Int16 * samples
Pointer to the audio samples.
Definition: SoundStream.hpp:55
sf::SoundStream
Abstract base class for streamed audio sources.
Definition: SoundStream.hpp:45
sf::SoundStream::Chunk::sampleCount
std::size_t sampleCount
Number of samples pointed by Samples.
Definition: SoundStream.hpp:56
sf
Definition: AlResource.hpp:34
sf::Thread
Utility class to manipulate threads.
Definition: Thread.hpp:48
sf::SoundSource
Base class defining a sound's properties.
Definition: SoundSource.hpp:42