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/*
* dvbosd.c: Implementation of the DVB On Screen Display
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: dvbosd.c 1.16 2002/05/18 12:39:39 kls Exp $
*/
#include "dvbosd.h"
#include <signal.h>
#include <sys/ioctl.h>
#include <sys/unistd.h>
#include "tools.h"
cDvbOsd::cDvbOsd(int VideoDev, int x, int y)
:cOsdBase(x, y)
{
videoDev = VideoDev;
if (videoDev < 0)
esyslog("ERROR: illegal video device handle (%d)!", videoDev);
}
cDvbOsd::~cDvbOsd()
{
for (int i = 0; i < NumWindows(); i++)
CloseWindow(GetWindowNr(i));
}
bool cDvbOsd::SetWindow(cWindow *Window)
{
if (Window) {
// Window handles are counted 0...(MAXNUMWINDOWS - 1), but the actual window
// numbers in the driver are used from 1...MAXNUMWINDOWS.
int Handle = Window->Handle();
if (0 <= Handle && Handle < MAXNUMWINDOWS) {
Cmd(OSD_SetWindow, 0, Handle + 1);
return true;
}
esyslog("ERROR: illegal window handle: %d", Handle);
}
return false;
}
void cDvbOsd::Cmd(OSD_Command cmd, int color, int x0, int y0, int x1, int y1, const void *data)
{
if (videoDev >= 0) {
osd_cmd_t dc;
dc.cmd = cmd;
dc.color = color;
dc.x0 = x0;
dc.y0 = y0;
dc.x1 = x1;
dc.y1 = y1;
dc.data = (void *)data;
// must block all signals, otherwise the command might not be fully executed
sigset_t set, oldset;
sigfillset(&set);
sigdelset(&set, SIGALRM);
sigprocmask(SIG_BLOCK, &set, &oldset);
ioctl(videoDev, OSD_SEND_CMD, &dc);
if (cmd == OSD_SetBlock) // XXX this is the only command that takes longer
usleep(5000); // XXX Workaround for a driver bug (cInterface::DisplayChannel() displayed texts at wrong places
// XXX and sometimes the OSD was no longer displayed).
// XXX Increase the value if the problem still persists on your particular system.
// TODO Check if this is still necessary with driver versions after 0.7.
sigprocmask(SIG_SETMASK, &oldset, NULL);
}
}
bool cDvbOsd::OpenWindow(cWindow *Window)
{
if (SetWindow(Window)) {
Cmd(OSD_Open, Window->Bpp(), X0() + Window->X0(), Y0() + Window->Y0(), X0() + Window->X0() + Window->Width() - 1, Y0() + Window->Y0() + Window->Height() - 1, (void *)1); // initially hidden!
return true;
}
return false;
}
void cDvbOsd::CommitWindow(cWindow *Window)
{
if (SetWindow(Window)) {
int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
if (Window->Dirty(x1, y1, x2, y2)) {
// commit colors:
int FirstColor = 0, LastColor = 0;
const eDvbColor *pal;
while ((pal = Window->Colors(FirstColor, LastColor)) != NULL)
Cmd(OSD_SetPalette, FirstColor, LastColor, 0, 0, 0, pal);
// commit modified data:
Cmd(OSD_SetBlock, Window->Width(), x1, y1, x2, y2, Window->Data(x1, y1));
}
}
}
void cDvbOsd::ShowWindow(cWindow *Window)
{
if (SetWindow(Window))
Cmd(OSD_MoveWindow, 0, X0() + Window->X0(), Y0() + Window->Y0());
}
void cDvbOsd::HideWindow(cWindow *Window, bool Hide)
{
if (SetWindow(Window))
Cmd(Hide ? OSD_Hide : OSD_Show, 0);
}
void cDvbOsd::MoveWindow(cWindow *Window, int x, int y)
{
if (SetWindow(Window))
Cmd(OSD_MoveWindow, 0, X0() + x, Y0() + y);
}
void cDvbOsd::CloseWindow(cWindow *Window)
{
if (SetWindow(Window))
Cmd(OSD_Close);
}
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