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| author | rubidium <rubidium@openttd.org> | 2010-01-15 23:47:28 +0000 |
|---|---|---|
| committer | rubidium <rubidium@openttd.org> | 2010-01-15 23:47:28 +0000 |
| commit | 21fff6407d8c29e383d64cb4319c4f1698b739cc (patch) | |
| tree | 80de2020ad30272e15ea5f79acc94eb64e5351a4 /src | |
| parent | f74ce1890e9d126dd6b9110cd120cda8fae55271 (diff) | |
| download | openttd-21fff6407d8c29e383d64cb4319c4f1698b739cc.tar.xz | |
(svn r18821) -Codechange: [Allegro] make the frequency and number of samples runtime configurable
Diffstat (limited to 'src')
| -rw-r--r-- | src/sound/allegro_s.cpp | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/sound/allegro_s.cpp b/src/sound/allegro_s.cpp index 6bb1e756c..e443403b8 100644 --- a/src/sound/allegro_s.cpp +++ b/src/sound/allegro_s.cpp @@ -22,7 +22,7 @@ static FSoundDriver_Allegro iFSoundDriver_Allegro; /** The stream we are writing too */ static AUDIOSTREAM *_stream = NULL; /** The number of samples in the buffer */ -static const int BUFFER_SIZE = 4096; +static int _buffer_size; void SoundDriver_Allegro::MainLoop() { @@ -34,11 +34,11 @@ void SoundDriver_Allegro::MainLoop() if (data == NULL) return; /* Mix the samples */ - MxMixSamples(data, BUFFER_SIZE); + MxMixSamples(data, _buffer_size); /* Allegro sound is always unsigned, so we need to correct that */ uint16 *snd = (uint16*)data; - for (int i = 0; i < BUFFER_SIZE * 2; i++) snd[i] ^= 0x8000; + for (int i = 0; i < _buffer_size * 2; i++) snd[i] ^= 0x8000; /* Tell we've filled the stream */ free_audio_stream_buffer(_stream); @@ -68,8 +68,10 @@ const char *SoundDriver_Allegro::Start(const char * const *parm) return "No sound card found"; } - _stream = play_audio_stream(BUFFER_SIZE, 16, true, 44100, 255, 128); - MxInitialize(44100); + int hz = GetDriverParamInt(parm, "hz", 44100); + _buffer_size = GetDriverParamInt(parm, "samples", 1024) * hz / 11025; + _stream = play_audio_stream(_buffer_size, 16, true, hz, 255, 128); + MxInitialize(hz); return NULL; } |