hyperion.ng/libsrc/grabber/osx/OsxFrameGrabber.cpp
brindosch 76acff8043 Logging for dispmanx, framebuffer, x11, v4l2, osx (#103)
* dispmanx

* typi

* Framebuffer

* fix attempt

* x11

* osx

* V4L2
2016-07-12 00:53:48 +02:00

84 lines
2.1 KiB
C++
Executable File

// STL includes
#include <cassert>
#include <iostream>
// Local includes
#include <grabber/OsxFrameGrabber.h>
OsxFrameGrabber::OsxFrameGrabber(const unsigned display, const unsigned width, const unsigned height) :
_screenIndex(display),
_width(width),
_height(height),
_imgResampler(new ImageResampler()),
_log(Logger::getInstance("OSXGRABBER"))
{
CGImageRef image;
CGDisplayCount displayCount;
CGDirectDisplayID displays[8];
// get list of displays
CGGetActiveDisplayList(8, displays, &displayCount);
if (_screenIndex + 1 > displayCount)
{
Error(_log, "Display with index %d is not available. Using main display", _screenIndex);
_display = kCGDirectMainDisplay;
} else {
_display = displays[_screenIndex];
}
image = CGDisplayCreateImage(_display);
assert(image != NULL);
Info(_log, "Display opened with resolution: %dx%d@%dbit", CGImageGetWidth(image), CGImageGetHeight(image), CGImageGetBitsPerPixel(image));
CGImageRelease(image);
}
OsxFrameGrabber::~OsxFrameGrabber()
{
delete _imgResampler;
}
void OsxFrameGrabber::setVideoMode(const VideoMode videoMode)
{
_imgResampler->set3D(videoMode);
}
void OsxFrameGrabber::grabFrame(Image<ColorRgb> & image)
{
CGImageRef dispImage;
CFDataRef imgData;
unsigned char * pImgData;
unsigned dspWidth, dspHeight;
dispImage = CGDisplayCreateImage(_display);
// dsiplay lost, use main
if (dispImage == NULL && _display)
{
dispImage = CGDisplayCreateImage(kCGDirectMainDisplay);
// no displays connected, return
if (dispImage == NULL)
{
Error(_log, "No display connected...");
return;
}
}
imgData = CGDataProviderCopyData(CGImageGetDataProvider(dispImage));
pImgData = (unsigned char*) CFDataGetBytePtr(imgData);
dspWidth = CGImageGetWidth(dispImage);
dspHeight = CGImageGetHeight(dispImage);
_imgResampler->setHorizontalPixelDecimation(dspWidth/_width);
_imgResampler->setVerticalPixelDecimation(dspHeight/_height);
_imgResampler->processImage( pImgData,
dspWidth,
dspHeight,
CGImageGetBytesPerRow(dispImage),
PIXELFORMAT_BGR32,
image);
CFRelease(imgData);
CGImageRelease(dispImage);
}