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/*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <qglobal.h>
#if defined(_OS_LINUX_) || defined(Q_OS_LINUX)
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "../linux/VideoDeviceLinux.h"
#endif
#if defined(_OS_WIN32_) || defined(Q_OS_WIN32)
#include "../win32/VideoDeviceWin32.h"
#endif
#include "VideoCollector.h"
CVideoCollector *CVideoCollector::s_pVideoCollector = 0;
#if defined(_OS_WIN32_) || defined(Q_OS_WIN32)
QMap<HWND, CVideoDeviceWin32 *>CVideoCollector::s_HWND2Video;
#endif
CVideoCollector::CVideoCollector()
{
qDebug("CVideoCollector::VideoCollector()");
}
// private
void CVideoCollector::Scan()
{
#if defined(_OS_WIN32_) || defined(Q_OS_WIN32)
int i;
CVideoDeviceWin32 *pDev;
char name[100], version[100];
for (i = 0; i < 10; i++) {
if (capGetDriverDescription(i, name ,sizeof(name), version, sizeof(version))) {
qDebug("found videodriver at pos %d: %s, %s", i, name, version);
pDev = new CVideoDeviceWin32(i);
if (pDev->IsValid())
m_Devices.append(pDev);
else
delete pDev;
}
else
break;
}
#endif
#if defined(_OS_LINUX_) || defined(Q_OS_LINUX)
QString devname;
struct stat devstat;
int i;
CVideoDeviceLinux *v;
/* Argh. This is the second time Qt bites me in /dev: IT WON'T BLOODY
LIST DEVICE INODES!!! So back to plain old sprintf().
*/
for (i = 0; i < 64; i++) {
devname.sprintf("/dev/video%d", i);
if (stat(devname, &devstat) == 0) {
if (!S_ISLNK(devstat.st_mode)) {
v = new CVideoDeviceLinux(devname);
if (!v->IsValid()) { // The class detects if this is a valid device
delete v;
v = NULL;
}
if (v)
m_Devices.append(v);
} // .. if !S_ISLNK
} // ..if !stat
} // ..for i
#endif
}
// public
CVideoCollector *CVideoCollector::Instance()
{
if (s_pVideoCollector == 0) {
s_pVideoCollector = new CVideoCollector();
s_pVideoCollector->Scan();
}
return s_pVideoCollector;
}
uint CVideoCollector::NumberOfVideoDevices() const
{
return m_Devices.count();
}
CVideoDevice *CVideoCollector::GetVideoDevice(uint n)
{
if (n < 0 || n >= m_Devices.count())
return 0;
return m_Devices.at(n);
}
#if defined(_OS_WIN32_) || defined(Q_OS_WIN32)
/* These functions are necessary for Windows, since that uses a callback mechanism.
This is probably the best place to handle this, since CVideoCollector already
knows about the video-devices present; it dispatches the callbacks to the
apropriate device.
*/
void CVideoCollector::RegisterDevice(HWND h, CVideoDeviceWin32 *pVideo)
{
s_HWND2Video[h] = pVideo;
capSetCallbackOnCapControl (h, CVideoCollector::ControlCallback);
capSetCallbackOnError (h, CVideoCollector::ErrorCallback);
capSetCallbackOnStatus (h, CVideoCollector::StatusCallback);
capSetCallbackOnVideoStream(h, CVideoCollector::VideoCallback);
// capSetCallbackOnYield (h, CVideoCollector::YieldCallback);
}
void CVideoCollector::UnregisterDevice(HWND h)
{
if (!s_HWND2Video.contains(h))
return;
capSetCallbackOnCapControl (h, NULL);
capSetCallbackOnError (h, NULL);
capSetCallbackOnStatus (h, NULL);
capSetCallbackOnVideoStream(h, NULL);
// capSetCallbackOnYield (h, NULL);
s_HWND2Video.remove(h);
}
LRESULT CALLBACK CVideoCollector::ControlCallback(HWND h, int id)
{
CVideoDeviceWin32 *pVideo;
pVideo = s_HWND2Video[h];
if (pVideo == 0)
return FALSE;
return pVideo->CallbackControl(id);
}
LRESULT CALLBACK CVideoCollector::ErrorCallback(HWND h, int id, LPTSTR text)
{
CVideoDeviceWin32 *pVideo;
pVideo = s_HWND2Video[h];
if (pVideo == 0)
return FALSE;
return pVideo->CallbackError(id, text);
}
LRESULT CALLBACK CVideoCollector::StatusCallback(HWND h, int id, LPTSTR text)
{
CVideoDeviceWin32 *pVideo;
pVideo = s_HWND2Video[h];
if (pVideo == 0)
return FALSE;
return pVideo->CallbackStatus(id, text);
}
LRESULT CALLBACK CVideoCollector::VideoCallback(HWND h, LPVIDEOHDR video)
{
CVideoDeviceWin32 *pVideo;
pVideo = s_HWND2Video[h];
if (pVideo == 0)
return FALSE;
return pVideo->CallbackVideoStream(video);
}
LRESULT CALLBACK CVideoCollector::YieldCallback(HWND h)
{
CVideoDeviceWin32 *pVideo;
pVideo = s_HWND2Video[h];
if (pVideo == 0)
return FALSE;
return pVideo->CallbackYield();
}
#endif
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