mirror of https://github.com/VDR4Arch/vdr.git
119 lines
3.4 KiB
C
119 lines
3.4 KiB
C
/*
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* dvbosd.c: Implementation of the DVB On Screen Display
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: dvbosd.c 1.15 2002/05/13 16:29:20 kls Exp $
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*/
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#include "dvbosd.h"
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#include <signal.h>
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#include <sys/ioctl.h>
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#include <sys/unistd.h>
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#include "tools.h"
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cDvbOsd::cDvbOsd(int VideoDev, int x, int y)
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:cOsd(x, y)
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{
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videoDev = VideoDev;
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if (videoDev < 0)
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esyslog("ERROR: illegal video device handle (%d)!", videoDev);
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}
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cDvbOsd::~cDvbOsd()
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{
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for (int i = 0; i < NumWindows(); i++)
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CloseWindow(GetWindowNr(i));
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}
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bool cDvbOsd::SetWindow(cWindow *Window)
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{
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if (Window) {
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// Window handles are counted 0...(MAXNUMWINDOWS - 1), but the actual window
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// numbers in the driver are used from 1...MAXNUMWINDOWS.
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int Handle = Window->Handle();
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if (0 <= Handle && Handle < MAXNUMWINDOWS) {
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Cmd(OSD_SetWindow, 0, Handle + 1);
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return true;
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}
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esyslog("ERROR: illegal window handle: %d", Handle);
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}
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return false;
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}
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void cDvbOsd::Cmd(OSD_Command cmd, int color, int x0, int y0, int x1, int y1, const void *data)
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{
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if (videoDev >= 0) {
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osd_cmd_t dc;
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dc.cmd = cmd;
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dc.color = color;
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dc.x0 = x0;
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dc.y0 = y0;
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dc.x1 = x1;
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dc.y1 = y1;
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dc.data = (void *)data;
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// must block all signals, otherwise the command might not be fully executed
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sigset_t set, oldset;
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sigfillset(&set);
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sigdelset(&set, SIGALRM);
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sigprocmask(SIG_BLOCK, &set, &oldset);
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ioctl(videoDev, OSD_SEND_CMD, &dc);
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if (cmd == OSD_SetBlock) // XXX this is the only command that takes longer
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usleep(5000); // XXX Workaround for a driver bug (cInterface::DisplayChannel() displayed texts at wrong places
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// XXX and sometimes the OSD was no longer displayed).
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// XXX Increase the value if the problem still persists on your particular system.
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// TODO Check if this is still necessary with driver versions after 0.7.
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sigprocmask(SIG_SETMASK, &oldset, NULL);
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}
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}
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bool cDvbOsd::OpenWindow(cWindow *Window)
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{
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if (SetWindow(Window)) {
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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!
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return true;
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}
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return false;
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}
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void cDvbOsd::CommitWindow(cWindow *Window)
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{
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if (SetWindow(Window)) {
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int x1 = 0, y1 = 0, x2 = 0, y2 = 0;
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if (Window->Dirty(x1, y1, x2, y2)) {
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// commit colors:
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int FirstColor = 0, LastColor = 0;
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const eDvbColor *pal;
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while ((pal = Window->Colors(FirstColor, LastColor)) != NULL)
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Cmd(OSD_SetPalette, FirstColor, LastColor, 0, 0, 0, pal);
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// commit modified data:
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Cmd(OSD_SetBlock, Window->Width(), x1, y1, x2, y2, Window->Data(x1, y1));
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}
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}
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}
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void cDvbOsd::ShowWindow(cWindow *Window)
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{
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if (SetWindow(Window))
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Cmd(OSD_MoveWindow, 0, X0() + Window->X0(), Y0() + Window->Y0());
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}
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void cDvbOsd::HideWindow(cWindow *Window, bool Hide)
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{
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if (SetWindow(Window))
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Cmd(Hide ? OSD_Hide : OSD_Show, 0);
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}
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void cDvbOsd::MoveWindow(cWindow *Window, int x, int y)
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{
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if (SetWindow(Window))
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Cmd(OSD_MoveWindow, 0, X0() + x, Y0() + y);
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}
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void cDvbOsd::CloseWindow(cWindow *Window)
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{
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if (SetWindow(Window))
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Cmd(OSD_Close);
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}
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