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Extract ImageResampler from X11Grabber

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Former-commit-id: 63e95fa85fc0ef5a66f6eb8b396cf4b6370cf5dd
This commit is contained in:
poljvd
2014-12-14 14:26:59 +01:00
parent 93de656985
commit e608b11caa
16 changed files with 517 additions and 345 deletions
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36
include/grabber/PixelFormat.h
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@@ -1,36 +0,0 @@
#pragma once
#include <string>
#include <algorithm>
/**
* Enumeration of the possible pixel formats the grabber can be set to
*/
enum PixelFormat {
PIXELFORMAT_YUYV,
PIXELFORMAT_UYVY,
PIXELFORMAT_RGB32,
PIXELFORMAT_NO_CHANGE
};
inline PixelFormat parsePixelFormat(std::string pixelFormat)
{
// convert to lower case
std::transform(pixelFormat.begin(), pixelFormat.end(), pixelFormat.begin(), ::tolower);
if (pixelFormat == "yuyv")
{
return PIXELFORMAT_YUYV;
}
else if (pixelFormat == "uyvy")
{
return PIXELFORMAT_UYVY;
}
else if (pixelFormat == "rgb32")
{
return PIXELFORMAT_RGB32;
}
// return the default NO_CHANGE
return PIXELFORMAT_NO_CHANGE;
}

136
include/grabber/V4L2Grabber.h
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@@ -11,119 +11,119 @@
// util includes
#include <utils/Image.h>
#include <utils/ColorRgb.h>
#include <utils/PixelFormat.h>
#include <utils/VideoMode.h>
// grabber includes
#include <grabber/VideoStandard.h>
#include <grabber/PixelFormat.h>
/// Capture class for V4L2 devices
///
/// @see http://linuxtv.org/downloads/v4l-dvb-apis/capture-example.html
class V4L2Grabber : public QObject
{
Q_OBJECT
Q_OBJECT
public:
V4L2Grabber(const std::string & device,
int input,
VideoStandard videoStandard, PixelFormat pixelFormat,
int width,
int height,
int frameDecimation,
int horizontalPixelDecimation,
int verticalPixelDecimation);
virtual ~V4L2Grabber();
V4L2Grabber(const std::string & device,
int input,
VideoStandard videoStandard, PixelFormat pixelFormat,
int width,
int height,
int frameDecimation,
int horizontalPixelDecimation,
int verticalPixelDecimation);
virtual ~V4L2Grabber();
public slots:
void setCropping(int cropLeft,
int cropRight,
int cropTop,
int cropBottom);
void setCropping(int cropLeft,
int cropRight,
int cropTop,
int cropBottom);
void set3D(VideoMode mode);
void set3D(VideoMode mode);
void setSignalThreshold(double redSignalThreshold,
double greenSignalThreshold,
double blueSignalThreshold,
int noSignalCounterThreshold);
void setSignalThreshold(double redSignalThreshold,
double greenSignalThreshold,
double blueSignalThreshold,
int noSignalCounterThreshold);
void start();
void start();
void stop();
void stop();
signals:
void newFrame(const Image<ColorRgb> & image);
void newFrame(const Image<ColorRgb> & image);
private slots:
int read_frame();
int read_frame();
private:
void open_device();
void open_device();
void close_device();
void close_device();
void init_read(unsigned int buffer_size);
void init_read(unsigned int buffer_size);
void init_mmap();
void init_mmap();
void init_userp(unsigned int buffer_size);
void init_userp(unsigned int buffer_size);
void init_device(VideoStandard videoStandard, int input);
void init_device(VideoStandard videoStandard, int input);
void uninit_device();
void uninit_device();
void start_capturing();
void start_capturing();
void stop_capturing();
void stop_capturing();
bool process_image(const void *p, int size);
bool process_image(const void *p, int size);
void process_image(const uint8_t *p);
void process_image(const uint8_t *p);
int xioctl(int request, void *arg);
int xioctl(int request, void *arg);
void throw_exception(const std::string &error);
void throw_exception(const std::string &error);
void throw_errno_exception(const std::string &error);
void throw_errno_exception(const std::string &error);
private:
enum io_method {
IO_METHOD_READ,
IO_METHOD_MMAP,
IO_METHOD_USERPTR
};
enum io_method {
IO_METHOD_READ,
IO_METHOD_MMAP,
IO_METHOD_USERPTR
};
struct buffer {
void *start;
size_t length;
};
struct buffer {
void *start;
size_t length;
};
private:
const std::string _deviceName;
const io_method _ioMethod;
int _fileDescriptor;
std::vector<buffer> _buffers;
const std::string _deviceName;
const io_method _ioMethod;
int _fileDescriptor;
std::vector<buffer> _buffers;
PixelFormat _pixelFormat;
int _width;
int _height;
int _frameByteSize;
int _cropLeft;
int _cropRight;
int _cropTop;
int _cropBottom;
int _frameDecimation;
int _horizontalPixelDecimation;
int _verticalPixelDecimation;
int _noSignalCounterThreshold;
PixelFormat _pixelFormat;
int _width;
int _height;
int _frameByteSize;
int _cropLeft;
int _cropRight;
int _cropTop;
int _cropBottom;
int _frameDecimation;
int _horizontalPixelDecimation;
int _verticalPixelDecimation;
int _noSignalCounterThreshold;
ColorRgb _noSignalThresholdColor;
ColorRgb _noSignalThresholdColor;
VideoMode _mode3D;
VideoMode _mode3D;
int _currentFrame;
int _noSignalCounter;
int _currentFrame;
int _noSignalCounter;
QSocketNotifier * _streamNotifier;
QSocketNotifier * _streamNotifier;
};

12
include/grabber/X11Grabber.h
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@@ -2,6 +2,7 @@
// Hyperion-utils includes
#include <utils/Image.h>
#include <utils/ColorRgb.h>
#include <utils/ImageResampler.h>
// X11 includes
#include <X11/Xlib.h>
@@ -10,7 +11,7 @@ class X11Grabber
{
public:
X11Grabber(const unsigned cropHorizontal, const unsigned cropVertical, const unsigned pixelDecimation);
X11Grabber(int cropLeft, int cropRight, int cropTop, int cropBottom, int horizontalPixelDecimation, int verticalPixelDecimation);
virtual ~X11Grabber();
@@ -19,11 +20,12 @@ public:
Image<ColorRgb> & grab();
private:
ImageResampler _imageResampler;
const unsigned _pixelDecimation;
const unsigned _cropWidth;
const unsigned _cropHeight;
int _cropLeft;
int _cropRight;
int _cropTop;
int _cropBottom;
/// Reference to the X11 display (nullptr if not opened)
Display * _x11Display;