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Diffstat (limited to 'hacks/analogtv.h')
| -rw-r--r-- | hacks/analogtv.h | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/hacks/analogtv.h b/hacks/analogtv.h deleted file mode 100644 index 474a7f8..0000000 --- a/hacks/analogtv.h +++ /dev/null @@ -1,346 +0,0 @@ -/* analogtv, Copyright (c) 2003-2018 Trevor Blackwell <tlb@tlb.org> - * - * Permission to use, copy, modify, distribute, and sell this software and its - * documentation for any purpose is hereby granted without fee, provided that - * the above copyright notice appear in all copies and that both that - * copyright notice and this permission notice appear in supporting - * documentation. No representations are made about the suitability of this - * software for any purpose. It is provided "as is" without express or - * implied warranty. - */ - -#ifndef _XSCREENSAVER_ANALOGTV_H -#define _XSCREENSAVER_ANALOGTV_H - -#include "thread_util.h" -#include "xshm.h" - -#if defined(HAVE_IPHONE) || defined(HAVE_ANDROID) -# define HAVE_MOBILE -#endif - -/* To simulate an NTSC CRT monitor with way more scanlines, and thus - apply an ahistorical tv-like effect to a larger image, increase - this resolution multiplier. - */ -#ifndef ANALOGTV_SCALE -# define ANALOGTV_SCALE 1 -#endif - -/* - You'll need these to generate standard NTSC TV signals - */ -enum { - /* We don't handle interlace here */ - ANALOGTV_V=262*ANALOGTV_SCALE, - ANALOGTV_TOP=30*ANALOGTV_SCALE, - ANALOGTV_VISLINES=200*ANALOGTV_SCALE, - ANALOGTV_BOT=ANALOGTV_TOP + ANALOGTV_VISLINES, - - /* This really defines our sampling rate, 4x the colorburst - frequency. Handily equal to the Apple II's dot clock. - You could also make a case for using 3x the colorburst freq, - but 4x isn't hard to deal with. */ - ANALOGTV_H=912*ANALOGTV_SCALE, - - /* Each line is 63500 nS long. The sync pulse is 4700 nS long, etc. - Define sync, back porch, colorburst, picture, and front porch - positions */ - ANALOGTV_SYNC_START=0, - ANALOGTV_BP_START=4700*ANALOGTV_H/63500, - ANALOGTV_CB_START=5800*ANALOGTV_H/63500, - /* signal[row][ANALOGTV_PIC_START] is the first displayed pixel */ - ANALOGTV_PIC_START=9400*ANALOGTV_H/63500, - ANALOGTV_PIC_LEN=52600*ANALOGTV_H/63500, - ANALOGTV_FP_START=62000*ANALOGTV_H/63500, - ANALOGTV_PIC_END=ANALOGTV_FP_START, - - /* TVs scan past the edges of the picture tube, so normally you only - want to use about the middle 3/4 of the nominal scan line. - */ - ANALOGTV_VIS_START=ANALOGTV_PIC_START + (ANALOGTV_PIC_LEN*1/8), - ANALOGTV_VIS_END=ANALOGTV_PIC_START + (ANALOGTV_PIC_LEN*7/8), - ANALOGTV_VIS_LEN=ANALOGTV_VIS_END-ANALOGTV_VIS_START, - - ANALOGTV_HASHNOISE_LEN=6*ANALOGTV_SCALE, - - ANALOGTV_GHOSTFIR_LEN=4, - - /* analogtv.signal is in IRE units, as defined below: */ - ANALOGTV_WHITE_LEVEL=100, - ANALOGTV_GRAY50_LEVEL=55, - ANALOGTV_GRAY30_LEVEL=35, - ANALOGTV_BLACK_LEVEL=10, - ANALOGTV_BLANK_LEVEL=0, - ANALOGTV_SYNC_LEVEL=-40, - ANALOGTV_CB_LEVEL=20, - - ANALOGTV_SIGNAL_LEN=ANALOGTV_V*ANALOGTV_H, - - /* The number of intensity levels we deal with for gamma correction &c */ - ANALOGTV_CV_MAX=1024, - - /* MAX_LINEHEIGHT corresponds to 2400 vertical pixels, beyond which - it interpolates extra black lines. */ - ANALOGTV_MAX_LINEHEIGHT=12 - -}; - -typedef struct analogtv_input_s { - signed char signal[ANALOGTV_V+1][ANALOGTV_H]; - - int do_teletext; - - /* for client use */ - void (*updater)(struct analogtv_input_s *inp); - void *client_data; - double next_update_time; - -} analogtv_input; - -typedef struct analogtv_font_s { - XImage *text_im; - int char_w, char_h; - int x_mult, y_mult; -} analogtv_font; - -typedef struct analogtv_reception_s { - - analogtv_input *input; - double ofs; - double level; - double multipath; - double freqerr; - - double ghostfir[ANALOGTV_GHOSTFIR_LEN]; - double ghostfir2[ANALOGTV_GHOSTFIR_LEN]; - - double hfloss; - double hfloss2; - -} analogtv_reception; - -/* - The rest of this should be considered mostly opaque to the analogtv module. - */ - -struct analogtv_yiq_s { - float y,i,q; -} /*yiq[ANALOGTV_PIC_LEN+10] */; - -typedef struct analogtv_s { - - Display *dpy; - Window window; - Screen *screen; - XWindowAttributes xgwa; - - struct threadpool threads; - -#if 0 - unsigned int onscreen_signature[ANALOGTV_V]; -#endif - - int n_colors; - - int interlace; - int interlace_counter; - - float agclevel; - - /* If you change these, call analogtv_set_demod */ - float tint_control,color_control,brightness_control,contrast_control; - float height_control, width_control, squish_control; - float horiz_desync; - float squeezebottom; - float powerup; - - /* internal cache */ - int blur_mult; - - /* For fast display, set fakeit_top, fakeit_bot to - the scanlines (0..ANALOGTV_V) that can be preserved on screen. - fakeit_scroll is the number of scan lines to scroll it up, - or 0 to not scroll at all. It will DTRT if asked to scroll from - an offscreen region. - */ - int fakeit_top; - int fakeit_bot; - int fakeit_scroll; - int redraw_all; - - int use_cmap,use_color; - int bilevel_signal; - - XShmSegmentInfo shm_info; - int visdepth,visclass,visbits; - int red_invprec, red_shift; - int green_invprec, green_shift; - int blue_invprec, blue_shift; - unsigned long red_mask, green_mask, blue_mask; - - Colormap colormap; - int usewidth,useheight,xrepl,subwidth; - XImage *image; /* usewidth * useheight */ - GC gc; - int screen_xo,screen_yo; /* centers image in window */ - - int flutter_horiz_desync; - int flutter_tint; - - struct timeval last_display_time; - int need_clear; - - - /* Add hash (in the radio sense, not the programming sense.) These - are the small white streaks that appear in quasi-regular patterns - all over the screen when someone is running the vacuum cleaner or - the blender. We also set shrinkpulse for one period which - squishes the image horizontally to simulate the temporary line - voltate drop when someone turns on a big motor */ - double hashnoise_rpm; - int hashnoise_counter; - int hashnoise_times[ANALOGTV_V]; - int hashnoise_signal[ANALOGTV_V]; - int hashnoise_on; - int hashnoise_enable; - int shrinkpulse; - - float crtload[ANALOGTV_V]; - - unsigned int red_values[ANALOGTV_CV_MAX]; - unsigned int green_values[ANALOGTV_CV_MAX]; - unsigned int blue_values[ANALOGTV_CV_MAX]; - - unsigned long colors[256]; - int cmap_y_levels; - int cmap_i_levels; - int cmap_q_levels; - - float tint_i, tint_q; - - int cur_hsync; - int line_hsync[ANALOGTV_V]; - int cur_vsync; - double cb_phase[4]; - double line_cb_phase[ANALOGTV_V][4]; - - int channel_change_cycles; - double rx_signal_level; - float *rx_signal; - - struct { - int index; - double value; - } leveltable[ANALOGTV_MAX_LINEHEIGHT+1][ANALOGTV_MAX_LINEHEIGHT+1]; - - /* Only valid during draw. */ - unsigned random0, random1; - double noiselevel; - const analogtv_reception *const *recs; - unsigned rec_count; - - float *signal_subtotals; - - float puheight; -} analogtv; - - -analogtv *analogtv_allocate(Display *dpy, Window window); -analogtv_input *analogtv_input_allocate(void); - -/* call if window size changes */ -void analogtv_reconfigure(analogtv *it); - -void analogtv_set_defaults(analogtv *it, char *prefix); -void analogtv_release(analogtv *it); -int analogtv_set_demod(analogtv *it); -void analogtv_setup_frame(analogtv *it); -void analogtv_setup_sync(analogtv_input *input, int do_cb, int do_ssavi); -void analogtv_draw(analogtv *it, double noiselevel, - const analogtv_reception *const *recs, unsigned rec_count); - -int analogtv_load_ximage(analogtv *it, analogtv_input *input, - XImage *pic_im, XImage *mask_im, - int xoff, int yoff, int width, int height); - -void analogtv_reception_update(analogtv_reception *inp); - -void analogtv_setup_teletext(analogtv_input *input); - - -/* Functions for rendering content into an analogtv_input */ - -void analogtv_make_font(Display *dpy, Window window, - analogtv_font *f, int w, int h, char *fontname); -int analogtv_font_pixel(analogtv_font *f, int c, int x, int y); -void analogtv_font_set_pixel(analogtv_font *f, int c, int x, int y, int value); -void analogtv_font_set_char(analogtv_font *f, int c, char *s); -void analogtv_lcp_to_ntsc(double luma, double chroma, double phase, - int ntsc[4]); - - -void analogtv_draw_solid(analogtv_input *input, - int left, int right, int top, int bot, - int ntsc[4]); - -void analogtv_draw_solid_rel_lcp(analogtv_input *input, - double left, double right, - double top, double bot, - double luma, double chroma, double phase); - -void analogtv_draw_char(analogtv_input *input, analogtv_font *f, - int c, int x, int y, int ntsc[4]); -void analogtv_draw_string(analogtv_input *input, analogtv_font *f, - char *s, int x, int y, int ntsc[4]); -void analogtv_draw_string_centered(analogtv_input *input, analogtv_font *f, - char *s, int x, int y, int ntsc[4]); - -int analogtv_handle_events (analogtv *it); - -#ifdef HAVE_XSHM_EXTENSION -#define ANALOGTV_DEFAULTS_SHM "*useSHM: True", -#else -#define ANALOGTV_DEFAULTS_SHM -#endif - -#ifndef HAVE_MOBILE -# define ANALOGTV_DEF_BRIGHTNESS "2" -# define ANALOGTV_DEF_CONTRAST "150" -#else - /* Need to really crank this up for it to look good on the iPhone screen. */ -# define ANALOGTV_DEF_BRIGHTNESS "3" -# define ANALOGTV_DEF_CONTRAST "400" -#endif - -/* Brightness: useful range is around -75 to 100. - Contrast: useful range is around 0 - 500. - Color: useful range is around +/- 500. - Tint: range is mod 360. - - The values in the 'analogtv' struct are the resource divided by 100.0, - except for tint, which is exact. - */ - -#define ANALOGTV_DEFAULTS \ - "*TVColor: 70", \ - "*TVTint: 5", \ - "*TVBrightness: " ANALOGTV_DEF_BRIGHTNESS, \ - "*TVContrast: " ANALOGTV_DEF_CONTRAST, \ - "*Background: Black", \ - "*use_cmap: 0", \ - "*geometry: 800x600", \ - "*fpsSolid: True", \ - "*lowrez: True", \ - THREAD_DEFAULTS \ - ANALOGTV_DEFAULTS_SHM - -#define ANALOGTV_OPTIONS \ - THREAD_OPTIONS \ - { "-use-cmap", ".use_cmap", XrmoptionSepArg, 0 }, \ - { "-tv-color", ".TVColor", XrmoptionSepArg, 0 }, \ - { "-tv-tint", ".TVTint", XrmoptionSepArg, 0 }, \ - { "-tv-brightness", ".TVBrightness", XrmoptionSepArg, 0 }, \ - { "-tv-contrast", ".TVContrast", XrmoptionSepArg, 0 }, - -#endif /* _XSCREENSAVER_ANALOGTV_H */ |