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/* |
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* mintv.cpp - 50/60Hz video display using v4l and XVideo |
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* mintv.cpp - 50/60Hz noninterlaced video display using v4l and XVideo |
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* |
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* Written in 2003 by Christian Bauer |
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* Written in 2003-2004 by Christian Bauer |
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*/ |
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#include <stdio.h> |
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#include <X11/StringDefs.h> |
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#include <X11/Intrinsic.h> |
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#include <X11/Shell.h> |
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#include <X11/cursorfont.h> |
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#include <X11/Xaw/Simple.h> |
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#include <X11/extensions/XShm.h> |
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#include <X11/extensions/Xv.h> |
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const int PAL_WIDTH = 384; |
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const int PAL_HEIGHT = 288; |
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const int NTSC_WIDTH = 320; |
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const int NTSC_WIDTH = 360; |
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const int NTSC_HEIGHT = 240; |
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static int grab_width, grab_height; |
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static int grab_width = -1, grab_height; |
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static int image_width, image_height; |
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static int win_width, win_height; |
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const int PAL_FPS = 50; |
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const int NTSC_FPS = 60; |
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const double PAL_FPS = 50.0; |
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const double NTSC_FPS = 59.94; |
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static int fps; |
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static double fps; |
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static int brightness = 50, contrast = 50, color = 50; |
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now = GetTicks_usec(); |
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uint64 elapsed = now - prev; |
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int64 delay = 1000000 / fps - (now - prev); |
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int64 delay = int64(1000000.0 / fps) - (now - prev); |
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#if LOGGING |
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fprintf(log, "elapsed %Ld usec, delay %Ld usec\n", elapsed, delay); |
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#endif |
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{"help", 0, 0, 'h'}, |
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{"ntsc", 0, 0, 'n'}, |
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{"port", 1, 0, 'p'}, |
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{"width", 1, 0, 'w'}, |
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{NULL, 0, 0, 0} |
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}; |
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// Parse options |
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for (;;) { |
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int c; |
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if ((c = getopt_long(argc, argv, "hnp:", long_opts,NULL)) == -1) |
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if ((c = getopt_long(argc, argv, "hnp:w:", long_opts, NULL)) == -1) |
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break; |
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switch (c) { |
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case 'p': |
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port = atoi(optarg); |
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break; |
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case 'w': |
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grab_width = atoi(optarg); |
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break; |
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case 'h': |
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default: |
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fprintf(stderr, |
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"50/60Hz video display application\n\n" |
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"Options:\n" |
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" -h | --help this text\n" |
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" -n | --ntsc NTSC mode\n" |
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" -p | --port n Xv output port\n\n" |
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" -h | --help this text\n" |
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" -n | --ntsc NTSC mode\n" |
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" -p | --port n Xv output port\n" |
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" -w | --width n image width\n\n" |
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"Keyboard commands:\n" |
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" q quit\n" |
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" 1/2 select channel\n" |
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XtOverrideTranslations(app_shell, XtParseTranslationTable( |
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"<Message>WM_PROTOCOLS: quit()\n" |
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"<Key>q: quit()\n" |
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"<Key>Escape: quit()\n" |
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"<Key>1: select_channel_1()\n" |
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"<Key>2: select_channel_2()\n" |
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"<Key>KP_7: inc_brightness()\n" |
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// Set grab and window dimensions |
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if (ntsc) { |
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grab_width = NTSC_WIDTH; |
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if (grab_width == -1) |
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grab_width = NTSC_WIDTH; |
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grab_height = NTSC_HEIGHT; |
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fps = NTSC_FPS; |
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} else { |
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grab_width = PAL_WIDTH; |
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if (grab_width == -1) |
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grab_width = PAL_WIDTH; |
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grab_height = PAL_HEIGHT; |
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fps = PAL_FPS; |
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} |
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XtRealizeWidget(app_shell); |
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XtVaSetValues(app_shell, |
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XtNtitle, "mintv", |
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XtNinput, True, |
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NULL |
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); |
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XSetWMProtocols(XtDisplay(app_shell), XtWindow(app_shell), &wm, 1); |
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XSetWMProtocols(dpy, XtWindow(app_shell), &wm, 1); |
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gc = XCreateGC(dpy, XtWindow(video), 0, NULL); |
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// Hide cursor |
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Colormap cmap = DefaultColormap(dpy, DefaultScreen(dpy)); |
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XColor black; |
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XParseColor(dpy, cmap, "#000000", &black); |
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XAllocColor(dpy, cmap, &black); |
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static char null_data[] = {0, 0, 0, 0, 0, 0, 0, 0}; |
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Pixmap null_pixmap = XCreateBitmapFromData(dpy, XtWindow(video), null_data, 8, 8); |
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Cursor null_cursor = XCreatePixmapCursor(dpy, null_pixmap, null_pixmap, &black, &black, 0, 0); |
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XDefineCursor(dpy, XtWindow(video), null_cursor); |
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// Set image format |
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unsigned format = XV_FORMAT; |
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