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[c-host] dxgi: implement getFrame

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This commit is contained in:
Geoffrey McRae 2019-03-03 23:46:03 +11:00
parent 22dcb39adb
commit 20f8c92bb2
1 changed files with 42 additions and 5 deletions
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39
c-host/windows/capture/dxgi.c
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@ -46,6 +46,7 @@ struct iface
unsigned int height;
unsigned int pitch;
unsigned int stride;
CaptureFormat format;
};
static bool dpiDone = false;
@ -278,6 +279,16 @@ static bool dxgi_init()
IDXGIOutputDuplication_GetDesc(this->dup, &dupDesc);
DEBUG_INFO("Source Format : %s", GetDXGIFormatStr(dupDesc.ModeDesc.Format));
switch(dupDesc.ModeDesc.Format)
{
case DXGI_FORMAT_B8G8R8A8_UNORM : this->format = CAPTURE_FMT_BGRA ; break;
case DXGI_FORMAT_R8G8B8A8_UNORM : this->format = CAPTURE_FMT_RGBA ; break;
case DXGI_FORMAT_R10G10B10A2_UNORM: this->format = CAPTURE_FMT_RGBA10; break;
default:
DEBUG_ERROR("Unsupported source format");
goto fail_release_output;
}
D3D11_TEXTURE2D_DESC texDesc;
memset(&texDesc, 0, sizeof(texDesc));
texDesc.Width = this->width;
@ -450,6 +461,31 @@ static CaptureResult dxgi_capture(bool * hasFrameUpdate, bool * hasPointerUpdate
return CAPTURE_RESULT_OK;
}
static bool dxgi_getFrame(CaptureFrame * frame)
{
assert(this);
assert(this->initialized);
frame->width = this->width;
frame->height = this->height;
frame->pitch = this->pitch;
frame->format = this->format;
HRESULT status;
D3D11_MAPPED_SUBRESOURCE mapping;
status = ID3D11DeviceContext_Map(this->deviceContext, (ID3D11Resource*)this->texture, 0, D3D11_MAP_READ, 0, &mapping);
if (FAILED(status))
{
DEBUG_WINERROR("Failed to map the texture", status);
return false;
}
memcpy(frame->data, mapping.pData, this->pitch * this->height);
ID3D11DeviceContext_Unmap(this->deviceContext, (ID3D11Resource*)this->texture, 0);
return true;
}
static CaptureResult dxgi_releaseFrame()
{
assert(this);
@ -490,5 +526,6 @@ struct CaptureInterface Capture_DXGI =
.deinit = dxgi_deinit,
.free = dxgi_free,
.getMaxFrameSize = dxgi_getMaxFrameSize,
.capture = dxgi_capture
.capture = dxgi_capture,
.getFrame = dxgi_getFrame
};