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MF-grabber: Add support for bottom-up image handling (#1752)

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* prepare bottom-up image handling

* add default stride handling, code cleaning

* fix code

* move whole logic to MF-grabber

* minor fix

---------

Co-authored-by: Thinner77 <none>
This commit is contained in:
Thinner77 2024-06-14 20:40:17 +02:00 committed by GitHub
parent 943f9e22f3
commit 7f90637a2d
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GPG Key ID: B5690EEEBB952194
3 changed files with 24 additions and 3 deletions
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1
include/grabber/video/mediafoundation/MFGrabber.h
View File

@ -46,6 +46,7 @@ public:
int numerator = 0;
int denominator = 0;
PixelFormat pf = PixelFormat::NO_CHANGE;
long defstride = 0;
GUID guid = GUID_NULL;
};

4
include/utils/PixelFormat.h
View File

@ -124,10 +124,10 @@ inline QString pixelFormatToString(const PixelFormat& pixelFormat)
enum class FlipMode
{
NO_CHANGE,
HORIZONTAL,
VERTICAL,
BOTH,
NO_CHANGE
BOTH
};
inline FlipMode parseFlipMode(const QString& flipMode)

22
libsrc/grabber/video/mediafoundation/MFGrabber.cpp
View File

@ -363,6 +363,18 @@ done:
_height = props.height;
_frameByteSize = _width * _height * 3;
_lineLength = _width * 3;
// adjust flipMode for bottom-up images
if (props.defstride < 0)
{
if (_flipMode == FlipMode::NO_CHANGE)
_flipMode = FlipMode::HORIZONTAL;
else if (_flipMode == FlipMode::HORIZONTAL)
_flipMode = FlipMode::NO_CHANGE;
else if (_flipMode == FlipMode::VERTICAL)
_flipMode = FlipMode::BOTH;
else if (_flipMode == FlipMode::BOTH)
_flipMode = FlipMode::VERTICAL;
}
}
// Cleanup
@ -436,6 +448,14 @@ void MFGrabber::enumVideoCaptureDevices()
properties.denominator = denominator;
properties.pf = pixelformat;
properties.guid = format;
HRESULT hr = pType->GetUINT32(MF_MT_DEFAULT_STRIDE, (UINT32*)&properties.defstride);
if (FAILED(hr))
{
hr = MFGetStrideForBitmapInfoHeader(format.Data1, width, &properties.defstride);
if (FAILED(hr))
DebugIf (verbose, _log, "failed to get default stride");
}
devicePropertyList.append(properties);
DebugIf (verbose, _log, "%s %d x %d @ %d fps (%s)", QSTRING_CSTR(dev), properties.width, properties.height, properties.fps, QSTRING_CSTR(pixelFormatToString(properties.pf)));
@ -797,7 +817,7 @@ QJsonArray MFGrabber::discover(const QJsonObject& params)
resolution_default["width"] = 640;
resolution_default["height"] = 480;
resolution_default["fps"] = 25;
format_default["format"] = "bgr24";
format_default["format"] = "rgb24";
format_default["resolution"] = resolution_default;
video_inputs_default["inputIdx"] = 0;
video_inputs_default["standards"] = "PAL";