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Fix/Improve: fix #267 and scale 4K desktop screen to 1080P

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yuanyuanxiang
2025-12-24 09:24:15 +01:00
parent 47ac8fb0d2
commit 2ee61a760f
20 changed files with 109 additions and 51 deletions
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35
client/ScreenCapturerDXGI.h
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@@ -107,20 +107,22 @@ public:
d3dDevice->CreateTexture2D(&desc, NULL, &cpuTexture);
// 9. <20><>ʼ<EFBFBD><CABC> BITMAPINFO
m_BitmapInfor_Full = (BITMAPINFO*)new char[sizeof(BITMAPINFO)];
memset(m_BitmapInfor_Full, 0, sizeof(BITMAPINFO));
m_BitmapInfor_Full->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
m_BitmapInfor_Full->bmiHeader.biWidth = m_ulFullWidth;
m_BitmapInfor_Full->bmiHeader.biHeight = m_ulFullHeight;
m_BitmapInfor_Full->bmiHeader.biPlanes = 1;
m_BitmapInfor_Full->bmiHeader.biBitCount = 32;
m_BitmapInfor_Full->bmiHeader.biCompression = BI_RGB;
m_BitmapInfor_Full->bmiHeader.biSizeImage = m_ulFullWidth * m_ulFullHeight * 4;
m_BitmapInfor_Full = ConstructBitmapInfo(32, m_ulFullWidth, m_ulFullHeight);
m_BitmapInfor_Send = new BITMAPINFO(*m_BitmapInfor_Full);
if (m_bAlgorithm != ALGORITHM_H264) {
m_BitmapInfor_Send->bmiHeader.biWidth = min(1920, m_BitmapInfor_Send->bmiHeader.biWidth);
m_BitmapInfor_Send->bmiHeader.biHeight = min(1080, m_BitmapInfor_Send->bmiHeader.biHeight);
m_BitmapInfor_Send->bmiHeader.biSizeImage =
((m_BitmapInfor_Send->bmiHeader.biWidth * m_BitmapInfor_Send->bmiHeader.biBitCount + 31) / 32) *
4 * m_BitmapInfor_Send->bmiHeader.biHeight;
}
// 10. <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ļ<EFBFBD><C4BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
m_FirstBuffer = new BYTE[m_BitmapInfor_Full->bmiHeader.biSizeImage + 1];
m_NextBuffer = new BYTE[m_BitmapInfor_Full->bmiHeader.biSizeImage + 1];
m_RectBuffer = new BYTE[m_BitmapInfor_Full->bmiHeader.biSizeImage * 2 + 12];
m_BmpZoomBuffer = new BYTE[m_BitmapInfor_Send->bmiHeader.biSizeImage * 2 + 12];
m_BmpZoomFirst = nullptr;
break;
} while (true);
@@ -145,13 +147,24 @@ public:
if (d3dDevice) d3dDevice->Release();
}
virtual LPBYTE scaleBitmap(LPBYTE target, LPBYTE bitmap) override {
if (m_ulFullWidth == m_BitmapInfor_Send->bmiHeader.biWidth && m_ulFullHeight == m_BitmapInfor_Send->bmiHeader.biHeight) {
memcpy(target, bitmap, m_BitmapInfor_Send->bmiHeader.biSizeImage);
return bitmap;
}
return ScaleBitmap(target, (uint8_t*)bitmap, m_ulFullWidth, m_ulFullHeight, m_BitmapInfor_Send->bmiHeader.biWidth,
m_BitmapInfor_Send->bmiHeader.biHeight);
}
LPBYTE GetFirstScreenData(ULONG* ulFirstScreenLength) override
{
int ret = CaptureFrame(m_FirstBuffer, ulFirstScreenLength, 1);
scaleBitmap(m_BmpZoomBuffer, m_FirstBuffer);
memcpy(m_FirstBuffer, m_BmpZoomBuffer, m_BitmapInfor_Send->bmiHeader.biSizeImage);
if (ret)
return nullptr;
if (m_bAlgorithm == ALGORITHM_GRAY) {
ToGray(1 + m_RectBuffer, 1 + m_RectBuffer, m_BitmapInfor_Full->bmiHeader.biSizeImage);
ToGray(1 + m_RectBuffer, 1 + m_RectBuffer, m_BitmapInfor_Send->bmiHeader.biSizeImage);
}
m_FirstBuffer[0] = TOKEN_FIRSTSCREEN;
return m_FirstBuffer;
@@ -161,6 +174,8 @@ public:
{
ULONG ulNextScreenLength = 0;
int ret = CaptureFrame(m_NextBuffer, &ulNextScreenLength, 0);
scaleBitmap(m_BmpZoomBuffer, m_NextBuffer);
memcpy(m_NextBuffer, m_BmpZoomBuffer, m_BitmapInfor_Send->bmiHeader.biSizeImage);
if (ret)
return nullptr;