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Create new utility function for scaling with aspect ratio and use it for DXVA2

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This commit is contained in:
Cameron Gutman
2018-08-04 22:22:15 -07:00
parent b076744f00
commit 5cbb38091b
4 changed files with 49 additions and 18 deletions
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app/streaming/video/ffmpeg-renderers/dxva2.cpp
+15 -16
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@@ -1,6 +1,7 @@
#include <initguid.h>
#include "dxva2.h"
#include "../ffmpeg.h"
#include <streaming/streamutils.h>
#include <Limelight.h>
@@ -593,22 +594,20 @@ void DXVA2Renderer::renderFrame(AVFrame* frame)
sample.PlanarAlpha = DXVA2_Fixed32OpaqueAlpha();
// Center in frame and preserve aspect ratio
double srcAspectRatio = (double)m_Desc.SampleWidth / (double)m_Desc.SampleHeight;
double dstAspectRatio = (double)m_DisplayWidth / (double)m_DisplayHeight;
if (dstAspectRatio < srcAspectRatio) {
// Greater height per width
int drawHeight = (int)(m_DisplayWidth / srcAspectRatio);
sample.DstRect.top = (m_DisplayHeight - drawHeight) / 2;
sample.DstRect.bottom = sample.DstRect.bottom + drawHeight;
sample.DstRect.right = m_DisplayWidth;
}
else {
// Greater width per height
int drawWidth = (int)(m_DisplayHeight * srcAspectRatio);
sample.DstRect.bottom = m_DisplayHeight;
sample.DstRect.left = (m_DisplayWidth - drawWidth) / 2;
sample.DstRect.right = sample.DstRect.left + drawWidth;
}
SDL_Rect src, dst;
src.x = src.y = 0;
src.w = m_Desc.SampleWidth;
src.h = m_Desc.SampleHeight;
dst.x = dst.y = 0;
dst.w = m_DisplayWidth;
dst.h = m_DisplayHeight;
StreamUtils::scaleSourceToDestinationSurface(&src, &dst);
sample.DstRect.left = dst.x;
sample.DstRect.right = dst.x + dst.w;
sample.DstRect.top = dst.y;
sample.DstRect.bottom = dst.y + dst.h;
DXVA2_VideoProcessBltParams bltParams = {};