INT ComputeLongSteps(DXVA2_ValueRange &range)
{
float f_step = DXVA2FixedToFloat(range.StepSize);
if (f_step == 0.0)
return 0;
float f_max = DXVA2FixedToFloat(range.MaxValue);
float f_min = DXVA2FixedToFloat(range.MinValue);
INT steps = INT((f_max - f_min) / f_step / 32);
return max(steps, 1);
}
DXVA2_Fixed32 Evr9VideoWindowControl::scaleProcAmpValue(DWORD prop, int value) const
{
float scaledValue = 0.0;
DXVA2_ValueRange range;
if (SUCCEEDED(m_processor->GetProcAmpRange(prop, &range))) {
scaledValue = DXVA2FixedToFloat(range.DefaultValue);
if (value > 0)
scaledValue += float(value) * (DXVA2FixedToFloat(range.MaxValue) - DXVA2FixedToFloat(range.DefaultValue)) / 100;
else if (value < 0)
scaledValue -= float(value) * (DXVA2FixedToFloat(range.MinValue) - DXVA2FixedToFloat(range.DefaultValue)) / 100;
}
return DXVA2FloatToFixed(scaledValue);
}
void VideoRendererEVR::applyMixerSettings(qreal brightness, qreal contrast, qreal hue, qreal saturation)
{
InputPin sink = BackendNode::pins(m_filter, PINDIR_INPUT).first();
OutputPin source;
if (FAILED(sink->ConnectedTo(source.pparam()))) {
return; //it must be connected to work
}
// Get the "Video Processor" (used for brightness/contrast/saturation/hue)
ComPointer<IMFVideoProcessor> processor = getService<IMFVideoProcessor>(m_filter, MR_VIDEO_MIXER_SERVICE, IID_IMFVideoProcessor);
Q_ASSERT(processor);
DXVA2_ValueRange contrastRange;
DXVA2_ValueRange brightnessRange;
DXVA2_ValueRange saturationRange;
DXVA2_ValueRange hueRange;
if (FAILED(processor->GetProcAmpRange(DXVA2_ProcAmp_Contrast, &contrastRange)))
return;
if (FAILED(processor->GetProcAmpRange(DXVA2_ProcAmp_Brightness, &brightnessRange)))
return;
if (FAILED(processor->GetProcAmpRange(DXVA2_ProcAmp_Saturation, &saturationRange)))
return;
if (FAILED(processor->GetProcAmpRange(DXVA2_ProcAmp_Hue, &hueRange)))
return;
DXVA2_ProcAmpValues values;
values.Contrast = DXVA2FloatToFixed(((contrast < 0
? DXVA2FixedToFloat(contrastRange.MinValue) : DXVA2FixedToFloat(contrastRange.MaxValue))
- DXVA2FixedToFloat(contrastRange.DefaultValue)) * qAbs(contrast) + DXVA2FixedToFloat(contrastRange.DefaultValue));
values.Brightness = DXVA2FloatToFixed(((brightness < 0
? DXVA2FixedToFloat(brightnessRange.MinValue) : DXVA2FixedToFloat(brightnessRange.MaxValue))
- DXVA2FixedToFloat(brightnessRange.DefaultValue)) * qAbs(brightness) + DXVA2FixedToFloat(brightnessRange.DefaultValue));
values.Saturation = DXVA2FloatToFixed(((saturation < 0
? DXVA2FixedToFloat(saturationRange.MinValue) : DXVA2FixedToFloat(saturationRange.MaxValue))
- DXVA2FixedToFloat(saturationRange.DefaultValue)) * qAbs(saturation) + DXVA2FixedToFloat(saturationRange.DefaultValue));
values.Hue = DXVA2FloatToFixed(((hue < 0
? DXVA2FixedToFloat(hueRange.MinValue) : DXVA2FixedToFloat(hueRange.MaxValue))
- DXVA2FixedToFloat(hueRange.DefaultValue)) * qAbs(hue) + DXVA2FixedToFloat(hueRange.DefaultValue));
//finally set the settings
processor->SetProcAmpValues(DXVA2_ProcAmp_Contrast | DXVA2_ProcAmp_Brightness | DXVA2_ProcAmp_Saturation | DXVA2_ProcAmp_Hue, &values);
}
