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Eliminate overly-early rounding that resulted in the waveform renderer being significantly wrong at some zoom levels

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Originally committed to SVN as r6589.
This commit is contained in:
Thomas Goyne 2012-03-18 18:41:48 +00:00
parent 4d2623bc2a
commit 36d962931d
1 changed files with 3 additions and 3 deletions
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6
aegisub/src/audio_renderer_waveform.cpp
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@ -81,7 +81,7 @@ void AudioWaveformRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
const AudioColorScheme *pal = &colors[style];
int pixel_samples = (pixel_ms * provider->GetSampleRate() + 500) / 1000;
double pixel_samples = pixel_ms * provider->GetSampleRate() / 1000.0;
// Fill the background
dc.SetBrush(wxBrush(pal->get(0.0f)));
@ -96,7 +96,7 @@ void AudioWaveformRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
audio_buffer = new char[buffer_needed];
}
int64_t cur_sample = start * pixel_samples;
double cur_sample = start * pixel_samples;
assert(provider->GetBytesPerSample() == 2);
assert(provider->GetChannels() == 1);
@ -106,7 +106,7 @@ void AudioWaveformRenderer::Render(wxBitmap &bmp, int start, AudioRenderingStyle
for (int x = 0; x < rect.width; ++x)
{
provider->GetAudio(audio_buffer, cur_sample, pixel_samples);
provider->GetAudio(audio_buffer, (int64_t)cur_sample, (int64_t)pixel_samples);
cur_sample += pixel_samples;
int peak_min = 0, peak_max = 0;