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tools/atrf-rssi/: added WLAN channel display (US, EU, and JP)
- gui.c (wlan_area): the currently displayed regulation domain - gui.c (wlan_channels): return the number of WLAN channels - gui.c (show_wlan_channel): determine whether the specified channel should be used in the currently displayed regulation domain - gui.c (label_wlan_channels): show WLAN channel numbers and their width - gui.c (gui): switch regulation domain with E (Europe), J (Japan), and U (US) - gui.c (gui): quit now only if Q is pressed instead of any key - gui.c (gui): call label_wlan_channels to display the WLAN channels
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@ -1,8 +1,8 @@
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/*
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* atrf-rssi/gui.c - Graphical output for atrf-rssi
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*
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* Written 2010 by Werner Almesberger
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* Copyright 2010 Werner Almesberger
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* Written 2010-2011 by Werner Almesberger
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* Copyright 2010-2011 Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -40,6 +40,8 @@
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#define BG_RGBA 0x00408080 /* grid background color */
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#define CHAN_RGBA 0xff4040ff /* channel number color */
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#define FREQ_RGBA 0x20ff00ff /* frequency color */
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#define WCHAN_RGBA 0xffff00e0 /* WLAN channel number color */
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#define WLAN_RGBA 0x8080ffff /* WLAN channel occupancy color */
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#define X_STEP 17 /* grid x step */
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#define Y_STEP 2 /* grid y step */
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@ -48,6 +50,19 @@
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#define X_OFFSET 7 /* x coordinate of lower left grid corner */
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#define Y_OFFSET 40 /* y coordinate of lower left grid corner */
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#define X_WLAN_OFFSET 31
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#define Y_WLAN_OFFSET 15
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#define WLAN_XR (X_STEP*9.5/5)
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#define WLAN_YH 6
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static enum {
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area_us,
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area_eu,
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area_jp,
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} wlan_area = area_us;
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static struct timeval t0;
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@ -95,6 +110,8 @@ static void clear(SDL_Surface *s)
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x-5+(pos)*6, x-1+(pos)*6, y+8, y+4, y, CHAN_RGBA
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#define CSMALL(pos) \
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x-7+(pos)*4, x-5+(pos)*4, y+15, y+13, y+11, FREQ_RGBA
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#define CWLAN(pos) \
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x-4+(pos)*5, x-1+(pos)*5, y+6, y+3, y, WCHAN_RGBA
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static void label_channels(SDL_Surface *s, int sx, int x0, int y0)
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@ -121,6 +138,66 @@ static void label_channels(SDL_Surface *s, int sx, int x0, int y0)
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}
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static int wlan_channels(void)
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{
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switch (wlan_area) {
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case area_us:
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return 11;
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case area_eu:
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return 13;
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case area_jp:
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return 14;
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default:
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abort();
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}
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}
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static int show_wlan_channel(int c)
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{
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switch (wlan_area) {
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case area_jp:
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if (c == 14)
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return 1;
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/* fall through */
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case area_us:
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return !((c-1) % 5);
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case area_eu:
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return !((c-1) % 4);
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default:
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abort();
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}
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}
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static void label_wlan_channels(SDL_Surface *s, int sx, int x0, int y0)
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{
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int x, xb, y, i, c;
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xb = x0;
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y = s->h-y0+4;
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for (i = 0; i != wlan_channels(); i++) {
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c = i+1;
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/* Japan special channel: 22 MHz from channel 13 */
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if (c == 14)
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xb += X_STEP*12/5-X_STEP;
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if (c > 9) {
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x = xb;
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digit(s, c/10, CWLAN(0));
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} else {
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x = xb-3;
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}
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digit(s, c % 10, CWLAN(1));
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if (show_wlan_channel(c)) {
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hlineColor(s, xb-WLAN_XR, xb+WLAN_XR, y-WLAN_YH,
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WLAN_RGBA);
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vlineColor(s, xb, y-2, y-WLAN_YH+1, WLAN_RGBA);
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}
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xb += sx;
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}
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}
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void gui(struct atrf_dsc *dsc)
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{
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SDL_Surface *surf;
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@ -143,10 +220,31 @@ void gui(struct atrf_dsc *dsc)
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}
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while (1) {
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while (SDL_PollEvent(&event))
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if (event.type == SDL_KEYDOWN ||
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event.type == SDL_QUIT)
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while (SDL_PollEvent(&event)) {
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switch (event.type) {
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case SDL_KEYDOWN:
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switch (event.key.keysym.sym) {
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case SDLK_j:
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wlan_area = area_jp;
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break;
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case SDLK_e:
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wlan_area = area_eu;
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break;
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case SDLK_u:
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wlan_area = area_us;
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break;
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case SDLK_q:
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return;
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default:
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break;
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}
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break;
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case SDL_QUIT:
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return;
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default:
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break;
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}
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}
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shift_grid(z, N_CHAN, N_TIME);
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sweep(dsc, z);
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@ -159,6 +257,7 @@ void gui(struct atrf_dsc *dsc)
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X_OFFSET, Y_OFFSET,
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FG_RGBA, BG_RGBA);
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label_channels(surf, X_STEP, X_OFFSET, Y_OFFSET);
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label_wlan_channels(surf, X_STEP, X_WLAN_OFFSET, Y_WLAN_OFFSET);
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SDL_UnlockSurface(surf);
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SDL_UpdateRect(surf, 0, 0, 0, 0);
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