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Some more cache management stuff for the audio rendering.

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Originally committed to SVN as r3421.
This commit is contained in:
Niels Martin Hansen 2009-08-16 16:22:59 +00:00
parent bafe88cf38
commit f3e84bea88
2 changed files with 26 additions and 2 deletions
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11
aegisub/src/audio_renderer.cpp
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@ -159,6 +159,12 @@ void AudioRenderer::SetAudioProvider(AudioProvider *_provider)
}
void AudioRenderer::SetCacheMaxSize(size_t max_size)
{
cache_maxsize = max_size;
}
void AudioRenderer::ResetBlockCount()
{
if (provider)
@ -255,9 +261,10 @@ void AudioRenderer::Render(wxDC &dc, wxPoint origin, int start, int length, bool
}
if (selected)
bitmaps_selected.Age(cache_maxsize);
bitmaps_selected.Age(cache_maxsize / 8);
else
bitmaps_normal.Age(cache_maxsize);
bitmaps_normal.Age(cache_maxsize / 8);
renderer->AgeCache(3 * cache_maxsize / 4);
}

17
aegisub/src/audio_renderer.h
View file

@ -168,6 +168,16 @@ public:
/// depends on the bitmap provider used.)
void SetAmplitudeScale(float amplitude_scale);
/// @brief Set the maximum allowed cache size
/// @param max_size Size in bytes that may be used for caching
///
/// The given max size is not a hard limit and does generally not include overhead
/// added by the cache management. The allowed size might be distributed among
/// several separate objects.
///
/// Changing the max cache size does not trigger cache aging.
void SetCacheMaxSize(size_t max_size);
/// @brief Get horizontal zoom
/// @return Audio samples per pixel rendering at
int GetSamplesPerPixel() const { return pixel_samples; }
@ -292,4 +302,11 @@ public:
/// @brief Change vertical zoom
/// @param amplitude_scale Scaling factor to zoom to
void SetAmplitudeScale(float amplitude_scale);
/// @brief Age any caches the renderer might keep
/// @param max_size Maximum size in bytes the caches should be
///
/// Deriving classes should override this method if they implement any
/// kind of caching.
virtual void AgeCache(size_t max_size) { }
};