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Fix "if" statement in XShmGetImage check and other things (#192) 

* Fix "if" statement

Nach dem testen des Codes, leider übersehen und nicht rückgängig gemacht.
Entschuldigung.

* Move XRenderSetPictureFilter from "grab" to "setupResources" part

* Resize destination image to target screen dimension once

* Fix coding style and add check for image resize
This commit is contained in:
Paulchen-Panther 2016-08-23 07:04:57 +02:00 committed by redPanther
parent 6acf68c87e
commit 62a24348f9
2 changed files with 62 additions and 61 deletions
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8
libsrc/grabber/x11/X11Grabber.cpp
View File

@ -92,6 +92,7 @@ void X11Grabber::setupResources()
_dstFormat = XRenderFindVisualFormat(_x11Display, _windowAttr.visual); _dstFormat = XRenderFindVisualFormat(_x11Display, _windowAttr.visual);
_srcPicture = XRenderCreatePicture(_x11Display, _window, _srcFormat, CPRepeat, &_pictAttr); _srcPicture = XRenderCreatePicture(_x11Display, _window, _srcFormat, CPRepeat, &_pictAttr);
_dstPicture = XRenderCreatePicture(_x11Display, _pixmap, _dstFormat, CPRepeat, &_pictAttr); _dstPicture = XRenderCreatePicture(_x11Display, _pixmap, _dstFormat, CPRepeat, &_pictAttr);
XRenderSetPictureFilter(_x11Display, _srcPicture, FilterBilinear, NULL, 0);
} }
} }
@ -160,7 +161,6 @@ Image<ColorRgb> & X11Grabber::grab()
}; };
XRenderSetPictureTransform (_x11Display, _srcPicture, &_transform); XRenderSetPictureTransform (_x11Display, _srcPicture, &_transform);
XRenderSetPictureFilter(_x11Display, _srcPicture, FilterBilinear, NULL, 0);
XRenderComposite( _x11Display, // dpy XRenderComposite( _x11Display, // dpy
PictOpSrc, // op PictOpSrc, // op
@ -178,7 +178,7 @@ Image<ColorRgb> & X11Grabber::grab()
XSync(_x11Display, False); XSync(_x11Display, False);
if (!_XShmAvailable) if (_XShmAvailable)
{ {
XShmGetImage(_x11Display, _pixmap, _xImage, 0, 0, AllPlanes); XShmGetImage(_x11Display, _pixmap, _xImage, 0, 0, AllPlanes);
} }
@ -239,7 +239,6 @@ int X11Grabber::grabFrame(Image<ColorRgb> & image)
}; };
XRenderSetPictureTransform (_x11Display, _srcPicture, &_transform); XRenderSetPictureTransform (_x11Display, _srcPicture, &_transform);
XRenderSetPictureFilter(_x11Display, _srcPicture, FilterBilinear, NULL, 0);
XRenderComposite( _x11Display, // dpy XRenderComposite( _x11Display, // dpy
PictOpSrc, // op PictOpSrc, // op
@ -257,7 +256,7 @@ int X11Grabber::grabFrame(Image<ColorRgb> & image)
XSync(_x11Display, False); XSync(_x11Display, False);
if (!_XShmAvailable) if (_XShmAvailable)
{ {
XShmGetImage(_x11Display, _pixmap, _xImage, 0, 0, AllPlanes); XShmGetImage(_x11Display, _pixmap, _xImage, 0, 0, AllPlanes);
} }
@ -338,6 +337,7 @@ int X11Grabber::updateScreenDimensions()
Info(_log, "Using XGetImage for grabbing"); Info(_log, "Using XGetImage for grabbing");
} }
_image.resize(_croppedWidth, _croppedHeight);
setupResources(); setupResources();
return 1; return 1;

115
libsrc/utils/ImageResampler.cpp
View File

@ -1,14 +1,14 @@
#include "utils/ImageResampler.h" #include "utils/ImageResampler.h"
#include <utils/Logger.h> #include <utils/Logger.h>
ImageResampler::ImageResampler() : ImageResampler::ImageResampler()
_horizontalDecimation(1), : _horizontalDecimation(1)
_verticalDecimation(1), , _verticalDecimation(1)
_cropLeft(0), , _cropLeft(0)
_cropRight(0), , _cropRight(0)
_cropTop(0), , _cropTop(0)
_cropBottom(0), , _cropBottom(0)
_videoMode(VIDEO_2D) , _videoMode(VIDEO_2D)
{ {
} }
@ -25,15 +25,15 @@ void ImageResampler::setHorizontalPixelDecimation(int decimator)
void ImageResampler::setVerticalPixelDecimation(int decimator) void ImageResampler::setVerticalPixelDecimation(int decimator)
{ {
_verticalDecimation = decimator; _verticalDecimation = decimator;
} }
void ImageResampler::setCropping(int cropLeft, int cropRight, int cropTop, int cropBottom) void ImageResampler::setCropping(int cropLeft, int cropRight, int cropTop, int cropBottom)
{ {
_cropLeft = cropLeft; _cropLeft = cropLeft;
_cropRight = cropRight; _cropRight = cropRight;
_cropTop = cropTop; _cropTop = cropTop;
_cropBottom = cropBottom; _cropBottom = cropBottom;
} }
void ImageResampler::set3D(VideoMode mode) void ImageResampler::set3D(VideoMode mode)
@ -62,70 +62,71 @@ void ImageResampler::processImage(const uint8_t * data, int width, int height, i
} }
// calculate the output size // calculate the output size
int outputWidth = (width - cropLeft - cropRight - _horizontalDecimation/2 + _horizontalDecimation - 1) / _horizontalDecimation; int outputWidth = (width - cropLeft - cropRight - _horizontalDecimation/2 + _horizontalDecimation - 1) / _horizontalDecimation;
int outputHeight = (height - cropTop - cropBottom - _verticalDecimation/2 + _verticalDecimation - 1) / _verticalDecimation; int outputHeight = (height - cropTop - cropBottom - _verticalDecimation/2 + _verticalDecimation - 1) / _verticalDecimation;
outputImage.resize(outputWidth, outputHeight); if ((outputImage.height() != unsigned(outputHeight)) && (outputImage.width() != unsigned(outputWidth)))
outputImage.resize(outputWidth, outputHeight);
for (int yDest = 0, ySource = cropTop + _verticalDecimation/2; yDest < outputHeight; ySource += _verticalDecimation, ++yDest) for (int yDest = 0, ySource = cropTop + _verticalDecimation/2; yDest < outputHeight; ySource += _verticalDecimation, ++yDest)
{ {
for (int xDest = 0, xSource = cropLeft + _horizontalDecimation/2; xDest < outputWidth; xSource += _horizontalDecimation, ++xDest) for (int xDest = 0, xSource = cropLeft + _horizontalDecimation/2; xDest < outputWidth; xSource += _horizontalDecimation, ++xDest)
{ {
ColorRgb & rgb = outputImage(xDest, yDest); ColorRgb & rgb = outputImage(xDest, yDest);
switch (pixelFormat) switch (pixelFormat)
{ {
case PIXELFORMAT_UYVY: case PIXELFORMAT_UYVY:
{ {
int index = lineLength * ySource + xSource * 2; int index = lineLength * ySource + xSource * 2;
uint8_t y = data[index+1]; uint8_t y = data[index+1];
uint8_t u = ((xSource&1) == 0) ? data[index ] : data[index-2]; uint8_t u = ((xSource&1) == 0) ? data[index ] : data[index-2];
uint8_t v = ((xSource&1) == 0) ? data[index+2] : data[index ]; uint8_t v = ((xSource&1) == 0) ? data[index+2] : data[index ];
yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue); yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
} }
break; break;
case PIXELFORMAT_YUYV: case PIXELFORMAT_YUYV:
{ {
int index = lineLength * ySource + xSource * 2; int index = lineLength * ySource + xSource * 2;
uint8_t y = data[index]; uint8_t y = data[index];
uint8_t u = ((xSource&1) == 0) ? data[index+1] : data[index-1]; uint8_t u = ((xSource&1) == 0) ? data[index+1] : data[index-1];
uint8_t v = ((xSource&1) == 0) ? data[index+3] : data[index+1]; uint8_t v = ((xSource&1) == 0) ? data[index+3] : data[index+1];
yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue); yuv2rgb(y, u, v, rgb.red, rgb.green, rgb.blue);
} }
break; break;
case PIXELFORMAT_BGR16: case PIXELFORMAT_BGR16:
{ {
int index = lineLength * ySource + xSource * 2; int index = lineLength * ySource + xSource * 2;
rgb.blue = (data[index] & 0x1f) << 3; rgb.blue = (data[index] & 0x1f) << 3;
rgb.green = (((data[index+1] & 0x7) << 3) | (data[index] & 0xE0) >> 5) << 2; rgb.green = (((data[index+1] & 0x7) << 3) | (data[index] & 0xE0) >> 5) << 2;
rgb.red = (data[index+1] & 0xF8); rgb.red = (data[index+1] & 0xF8);
} }
break; break;
case PIXELFORMAT_BGR24: case PIXELFORMAT_BGR24:
{ {
int index = lineLength * ySource + xSource * 3; int index = lineLength * ySource + xSource * 3;
rgb.blue = data[index ]; rgb.blue = data[index ];
rgb.green = data[index+1]; rgb.green = data[index+1];
rgb.red = data[index+2]; rgb.red = data[index+2];
} }
break; break;
case PIXELFORMAT_RGB32: case PIXELFORMAT_RGB32:
{ {
int index = lineLength * ySource + xSource * 4; int index = lineLength * ySource + xSource * 4;
rgb.red = data[index ]; rgb.red = data[index ];
rgb.green = data[index+1]; rgb.green = data[index+1];
rgb.blue = data[index+2]; rgb.blue = data[index+2];
} }
break; break;
case PIXELFORMAT_BGR32: case PIXELFORMAT_BGR32:
{ {
int index = lineLength * ySource + xSource * 4; int index = lineLength * ySource + xSource * 4;
rgb.blue = data[index ]; rgb.blue = data[index ];
rgb.green = data[index+1]; rgb.green = data[index+1];
rgb.red = data[index+2]; rgb.red = data[index+2];
} }
break; break;
case PIXELFORMAT_NO_CHANGE: case PIXELFORMAT_NO_CHANGE:
Error(Logger::getInstance("ImageResampler"), "Invalid pixel format given"); Error(Logger::getInstance("ImageResampler"), "Invalid pixel format given");
break; break;
} }
} }
@ -143,7 +144,7 @@ void ImageResampler::yuv2rgb(uint8_t y, uint8_t u, uint8_t v, uint8_t &r, uint8_
int c = y - 16; int c = y - 16;
int d = u - 128; int d = u - 128;
int e = v - 128; int e = v - 128;
r = clamp((298 * c + 409 * e + 128) >> 8); r = clamp((298 * c + 409 * e + 128) >> 8);
g = clamp((298 * c - 100 * d - 208 * e + 128) >> 8); g = clamp((298 * c - 100 * d - 208 * e + 128) >> 8);
b = clamp((298 * c + 516 * d + 128) >> 8); b = clamp((298 * c + 516 * d + 128) >> 8);