1// SuperTux
2// Copyright (C) 2006 Matthias Braun <matze@braunis.de>
3//
4// This program is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8//
9// This program is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13//
14// You should have received a copy of the GNU General Public License
15// along with this program. If not, see <http://www.gnu.org/licenses/>.
16
17#ifndef HEADER_SUPERTUX_AUDIO_STREAM_SOUND_SOURCE_HPP
18#define HEADER_SUPERTUX_AUDIO_STREAM_SOUND_SOURCE_HPP
19
20#include "audio/openal_sound_source.hpp"
21
22class SoundFile;
23
24class StreamSoundSource final : public OpenALSoundSource
25{
26private:
27 static const size_t STREAMBUFFERSIZE = 1024 * 500;
28 static const size_t STREAMFRAGMENTS = 5;
29 static const size_t STREAMFRAGMENTSIZE = STREAMBUFFERSIZE / STREAMFRAGMENTS;
30
31public:
32 enum FadeState { NoFading, FadingOn, FadingOff, FadingPause, FadingResume };
33
34public:
35 StreamSoundSource();
36 virtual ~StreamSoundSource();
37
38 virtual void update() override;
39 virtual void set_looping(bool looping_) override { m_looping = looping_; }
40
41 void set_sound_file(std::unique_ptr<SoundFile> newfile);
42
43 void set_fading(FadeState state, float fadetime);
44 FadeState get_fade_state() const { return m_fade_state; }
45 bool get_looping() const { return m_looping; }
46
47private:
48 bool fillBufferAndQueue(ALuint buffer);
49
50private:
51 std::unique_ptr<SoundFile> m_file;
52 ALuint m_buffers[STREAMFRAGMENTS];
53
54 FadeState m_fade_state;
55 float m_fade_start_time;
56 float m_fade_time;
57 bool m_looping;
58
59private:
60 StreamSoundSource(const StreamSoundSource&) = delete;
61 StreamSoundSource& operator=(const StreamSoundSource&) = delete;
62};
63
64#endif
65
66/* EOF */
67