sync with current state

2024-10-28 18:10:03 +01:00 · 2024-10-28 18:10:03 +01:00 · 8dc0480c18
commit 8dc0480c18
parent 895a744873
38 changed files with 1675 additions and 104 deletions
--- a/apps/PressStart2P-Regular.ttf
+++ b/apps/PressStart2P-Regular.ttf
--- a/apps/backlight.py
+++ b/apps/backlight.py
@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import random 
+import time
+import math
+import numpy as np
+# Groesse des Bildschirms bestimmen
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+
+# Bestimme den Parameter
+time_ms = 10
+try:
+    time_ms = int(sys.argv[3])
+except:
+    pass
+
+# Puffer fuer Pixel erstellen und mit 0 initialisieren
+
+curPixel = 0
+
+phase = np.random.uniform(0, 2*np.pi, (Ny, Nx))
+t = 0
+f_min = 0.08
+f_max = 0.10
+f = np.random.uniform(f_min, f_max, (Ny, Nx))
+while True:
+    t += time_ms/1000.0
+    s = 0.80 +0.2*np.sin(phase+2*np.pi*t*f)
+    img = np.zeros([Ny, Nx, 4])
+    img[:,:,3] = 255*s
+    # Zeige den Puffer an
+    out = img.reshape((Nx*Ny*4,)).astype(np.uint8)
+    os.write(1, out.tobytes())
+    # warte time_ms ms
+    time.sleep(time_ms*0.001)
--- a/apps/bimood
+++ b/apps/bimood
--- a/apps/c-src/99-fbdev.conf
+++ b/apps/c-src/99-fbdev.conf
@ -0,0 +1,6 @@
+Section "Device"  
+  Identifier "myfb"
+  Driver "fbdev"
+  Option "fbdev" "/dev/fb0"
+EndSection
+
--- a/apps/c-src/pixelflut.c
+++ b/apps/c-src/pixelflut.c
@ -6,7 +6,7 @@
 #include <assert.h>
 #include <ctype.h>
 #include <stdio.h>
-#include <threads.h>
+#include <pthread.h>
 #include <stdlib.h>

 int Nx, Ny;
@ -156,7 +156,7 @@ int PFT_HandlePixelflutMessage(uint8_t *buffer, int size, int sock){
    return begin-(char*)buffer;
 }

-int PFT_HandleClient(void* sock_){
+void* PFT_HandleClient(void* sock_){
    int sock = (int)(size_t)sock_;
    PFT_ClientThreadCount++;
    uint8_t buf[1024];
@ -172,7 +172,7 @@ int PFT_HandleClient(void* sock_){
 }


-int PFT_RunServer(void* _){
+void* PFT_RunServer(void* _){
    int client_sock;
    socklen_t addr_len;
    struct sockaddr_in addr;
@ -220,9 +220,9 @@ int PFT_RunServer(void* _){
    while(1){
        client_sock = accept(server_sock, (struct sockaddr*)&addr, &addr_len);
        if(client_sock > 0){
-            thrd_t thread;
-            thrd_create(&thread, PFT_HandleClient, (void*)(size_t)client_sock);
-            thrd_detach(thread);
+            pthread_t thread;
+            pthread_create(&thread, NULL, PFT_HandleClient, (void*)(size_t)client_sock);
+            pthread_detach(thread);
        }
    }
    close(server_sock);
@ -235,8 +235,8 @@ int main(int argc, char **argv) {
    buf = (uint8_t*)malloc(Nx*Ny*3);
    port = atoi(argv[3]);
    if (port == 0) port = 4444;
-    thrd_t thread;
-    thrd_create(&thread, PFT_RunServer, NULL);
+    pthread_t thread;
+    pthread_create(&thread, NULL, PFT_RunServer, NULL);

    

@ -245,4 +245,4 @@ int main(int argc, char **argv) {
        usleep(33*1000);

    }
-}
+}
--- a/apps/cnoise
+++ b/apps/cnoise
--- a/apps/convergence.py
+++ b/apps/convergence.py
@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+import numpy as np
+import time
+import os
+import sys
+import colorsys
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+N = max(Nx, Ny)
+
+def CpxRandNormal(min, max, N):
+    mu = (min+max)/2
+    sigma = (max-min)/2
+    return np.random.normal(mu, sigma, (N, N))+1.0j*np.random.normal(mu, sigma, (N, N))
+def CpxRand(min, max, N):
+    return np.random.uniform(min, max, (N, N))+1.0j*np.random.uniform(min, max, (N, N))
+
+A = CpxRandNormal(-100, 100, N)
+B = CpxRand(-1, 1, N)*0.1
+C = CpxRand(-1, 1, N)
+
+A_ex = np.linalg.inv(np.eye(N)-B)@C
+
+dir = -1
+solve = True
+t = 0
+while True:
+    t += 0.003
+    if solve:
+        A = 0.9*A+0.1*(B@A+C)
+    else:
+        A += CpxRandNormal(0, 0.008, N)
+    diff = A-A_ex
+    #angles = (np.angle(diff)+np.pi)/(2*np.pi
+    #diff = np.abs(diff)
+    #diff = 1-diff/(1+diff)
+    a = np.abs(np.real(diff))
+    a = a/(a+1)
+    b = np.abs(np.imag(diff))
+    b = b/(b+1)
+    img = np.zeros((Ny, Nx, 3))
+    for x in range(Nx):
+        for y in range(Ny):
+            c = colorsys.hsv_to_rgb((t+0.2+a[x, y]*0.2)%1, 1, 0.5*b[x, y]+0.5)
+            img[y,x,:] = np.array(c)*255
+    #img[:,:,0] = np.minimum(np.abs(diff*255).astype(int), 255)[:Ny,:Nx]
+    out = img.reshape((Nx*Ny*3,)).astype(np.uint8)
+    #A += np.random.uniform(-0.01, 0.01, (N, N))
+
+    #print(len(out))
+    os.write(1, out.tobytes())
+
+    if solve and np.sum(np.abs(diff)) <= 0.001*N*N:
+        solve = False
+    elif not solve and np.sum(np.abs(diff)) >= 1*N*N:
+        solve = True
+
+    #os.write(2, b"frame")
+    #print(angles, diff)
+
+    time.sleep(0.01)
--- a/apps/digi_clock.py
+++ b/apps/digi_clock.py
@ -0,0 +1,110 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+from datetime import datetime
+import math
+
+# Displaygröße
+Nx = int(sys.argv[1])  # Breite des Displays (z.B. 80)
+Ny = int(sys.argv[2])  # Höhe des Displays (z.B. 40)
+
+# Initialize pygame
+pygame.init()
+pygame.font.init()
+
+# Pfad zur Pixelfont im Verzeichnis "apps"
+font_path = os.path.join('.', 'PressStart2P-Regular.ttf')  # Pfad zur Schriftart
+
+# Schriftart mit optimierter Größe laden (z.B. 16px bis 20px)
+font_size = 16  # Geeignete Schriftgröße wählen
+font = pygame.font.Font(font_path, font_size)
+
+clock = pygame.time.Clock()
+time_elapsed = 0  # Zeit-Tracker für den Farbverlauf
+
+# Feste Farbe für den Rand (Türkis)
+border_color = (64, 224, 208)  # RGB-Werte für Türkis
+
+# Funktion zur Berechnung der RGB-Farbe basierend auf der Zeit und der Position des Zeichens
+def calculate_color(time_elapsed, position, total_length):
+    """Berechnet eine RGB-Farbe basierend auf der verstrichenen Zeit und der Position des Zeichens."""
+    frequency = 2 * math.pi / total_length  # Frequenz für den Regenbogenverlauf
+    phase_shift = position * frequency  # Verschiebung der Phase pro Zeichen
+
+    r = int((math.sin(time_elapsed + phase_shift) + 1) * 127.5)
+    g = int((math.sin(time_elapsed + phase_shift + 2 * math.pi / 3) + 1) * 127.5)
+    b = int((math.sin(time_elapsed + phase_shift + 4 * math.pi / 3) + 1) * 127.5)
+
+    return (r, g, b)
+
+# Funktion zum Rendern des Rahmens
+def render_border(display_surface, Nx, Ny, border_color):
+    """Zeichnet den Rahmen mit einer festen Farbe."""
+    # Obere Linie des Rahmens
+    for x in range(Nx):
+        display_surface.set_at((x, 0), border_color)  # Oben
+
+    # Rechte Linie des Rahmens
+    for y in range(1, Ny - 1):
+        display_surface.set_at((Nx - 1, y), border_color)  # Rechts
+
+    # Untere Linie des Rahmens
+    for x in range(Nx - 1, -1, -1):
+        display_surface.set_at((x, Ny - 1), border_color)  # Unten
+
+    # Linke Linie des Rahmens
+    for y in range(Ny - 2, 0, -1):
+        display_surface.set_at((0, y), border_color)  # Links
+
+# Funktion zum Zeichnen der Uhrzeit
+def render_time(display_surface, Nx, Ny, font, current_time, time_elapsed):
+    """Zeichnet die aktuelle Uhrzeit mittig auf das Display."""
+    # Reduzierter Zeichenabstand (85% der Schriftgröße)
+    character_spacing = font_size * 0.95  
+    # Breite des gesamten Textes berechnen
+    text_width = len(current_time) * character_spacing  
+    
+    # Horizontale und vertikale Zentrierung
+    x_offset = (Nx - text_width) // 2  
+    y_offset = (Ny - font_size) // 2   
+
+    # Zeichnen der Uhrzeit
+    for i, char in enumerate(current_time):
+        # Berechne die Farbe für das aktuelle Zeichen
+        text_color = calculate_color(time_elapsed, i, len(current_time))
+        # Rendern des Zeichens
+        text = font.render(char, True, text_color)
+        text_rect = text.get_rect(topleft=(x_offset + i * character_spacing, y_offset))
+        # Zeichen auf das Display zeichnen
+        display_surface.blit(text, text_rect)
+
+# Hauptprogramm zur Anzeige der Uhrzeit
+while True:
+    # Zeit seit Beginn des Programms
+    time_elapsed += clock.get_time() / 1000.0  # in Sekunden
+
+    # Aktuelle Zeit abrufen
+    now = datetime.now()
+    current_time = now.strftime("%H:%M")  # Uhrzeit im Format HH:MM
+
+    # Ein leeres Display für die Uhrzeit erstellen
+    display_surface = pygame.Surface((Nx, Ny))
+    display_surface.fill((0, 0, 0))  # Hintergrund schwarz
+
+    # Rahmen zeichnen
+    render_border(display_surface, Nx, Ny, border_color)
+
+    # Uhrzeit zeichnen (Aufruf der neuen Funktion)
+    render_time(display_surface, Nx, Ny, font, current_time, time_elapsed)
+
+    # Sicherstellen, dass das Bild die korrekten Dimensionen hat und der Framebuffer vollständig ist
+    out = pygame.surfarray.array3d(display_surface).transpose((1, 0, 2)).astype(np.uint8).tobytes()
+
+    # Framebuffer zum Server senden
+    os.write(1, out)
+
+    clock.tick(30)  # 30 FPS für flüssigen Farbverlauf
+
--- a/apps/doom_fire_psx2.py
+++ b/apps/doom_fire_psx2.py
@ -0,0 +1,101 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+try:
+    fps = float(sys.argv[3])
+except (IndexError, ValueError):
+    fps = 15
+
+#fps = 15
+
+colors = np.array([
+    0x0, 0x0, 0x0,
+#    0x07,0x07,0x07,
+#    0x1F,0x07,0x07,
+#    0x2F,0x0F,0x07,
+#    0x47,0x0F,0x07,
+    0x57,0x17,0x07,
+#    0x67,0x1F,0x07,
+#    0x77,0x1F,0x07,
+#    0x8F,0x27,0x07,
+    0x9F,0x2F,0x07,
+#    0xAF,0x3F,0x07,
+#    0xBF,0x47,0x07,
+#    0xC7,0x47,0x07,
+    0xDF,0x4F,0x07,
+#    0xDF,0x57,0x07,
+#    0xDF,0x57,0x07,
+#    0xD7,0x5F,0x07,
+#    0xD7,0x5F,0x07,
+ #   0xD7,0x67,0x0F,
+ #   0xCF,0x6F,0x0F,
+ #   0xCF,0x77,0x0F,
+    0xCF,0x7F,0x0F,
+ #   0xCF,0x87,0x17,
+ #   0xC7,0x87,0x17,
+ #   0xC7,0x8F,0x17,
+ #   0xC7,0x97,0x1F,
+ #   0xBF,0x9F,0x1F,
+ #   0xBF,0x9F,0x1F,
+ #   0xBF,0xA7,0x27,
+    0xBF,0xA7,0x27,
+ #   0xBF,0xAF,0x2F,
+ #   0xB7,0xAF,0x2F,
+ #   0xB7,0xB7,0x2F,
+ #   0xB7,0xB7,0x37,
+ #   0xCF,0xCF,0x6F,
+ #   0xDF,0xDF,0x9F,
+ #   0xEF,0xEF,0xC7,
+ #   0xFF,0xFF,0xFF
+], dtype=np.uint8)
+
+colors = np.reshape(colors, (colors.size//3, 3))
+
+grid = np.zeros((Ny,Nx), dtype=np.int)
+gridout = np.zeros((Ny,Nx), dtype=np.int)
+grid[0,:].fill(colors.shape[0]-1)
+
+clock = pygame.time.Clock()
+
+
+
+def state2red(c):
+    return colors[c, 0]
+
+def state2green(c):
+    return colors[c, 1]
+
+def state2blue(c):
+    return colors[c, 2]
+
+i = 0
+
+while True:
+    i = i + 1
+    rnd = np.random.randint(3, size=(Ny, Nx))
+
+    for px in range(Nx):
+        for py in range(1, Ny):
+            #grid[py, px] = max(grid[py-1, px] - 1, 0) # v1
+            #grid[py, px] = max(grid[py-1, px] - (rnd[py, px] & 1), 0) # v2
+            grid[py, (px - rnd[py, px] + 1) % Nx] = max(grid[py-1, px] - (rnd[py, px] & 1), 0) # v3
+
+    #if i % 100 == 0:
+    #    grid[0,:].fill(0)
+    #elif (i - (colors.shape[0] +10)) % 100 == 0:
+    #    grid[0,:].fill(colors.shape[0]-1)
+
+    gridup = np.flipud(np.fliplr(grid))
+    np.clip(grid + gridup, 0, colors.shape[0]-1, out=gridout)
+
+    #out = np.dstack((state2red(gridout), state2green(gridout), state2blue(gridout), np.full((Ny, Nx), 100, dtype=np.uint8))).astype(np.uint8).tobytes()
+    out = np.dstack((state2red(gridout), state2green(gridout), state2blue(gridout))).astype(np.uint8).tobytes()
+    
+    os.write(1, out)
+    clock.tick_busy_loop(fps)
--- a/apps/dualmaze
+++ b/apps/dualmaze
--- a/apps/example2.py
+++ b/apps/example2.py
@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import random 
+import time
+
+# Groesse des Bildschirms bestimmen
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+
+# Bestimme den Parameter
+time_ms = 100
+try:
+    time_ms = int(sys.argv[3])
+except:
+    pass
+
+# Puffer fuer Pixel erstellen und mit 0 initialisieren
+buffer = bytearray(b"\x00" * (4 * Nx * Ny))
+
+curPixel = 0
+
+while True:
+    # Zufaellige Pixel waeheln
+    # rot
+    x_r = random.randint(0, Nx-1)
+    y_r = random.randint(0, Ny-1)
+    i_r = 4*(x_r+Nx*y_r)
+    # gruen 
+    x_g = random.randint(0, Nx-1)
+    y_g = random.randint(0, Ny-1)
+    i_g = 4*(x_g+Nx*y_g)
+    # blau
+    x_b = random.randint(0, Nx-1)
+    y_b = random.randint(0, Ny-1)
+    i_b = 4*(x_b+Nx*y_b)
+    # weiss
+    x_w = random.randint(0, Nx-1)
+    y_w = random.randint(0, Ny-1)
+    i_w = 4*(x_w+Nx*y_w)
+
+    # Pixel in Puffer schreiben
+    # rot
+    buffer[i_r+0] = 0xff # Rotanteil
+    buffer[i_r+1] = 0x00 # Gruenanteil
+    buffer[i_r+2] = 0x00 # Blauanteil
+    buffer[i_r+3] = 0x00
+    # gruen
+    buffer[i_g+0] = 0x00 # Rotanteil
+    buffer[i_g+1] = 0xff # Gruenanteil
+    buffer[i_g+2] = 0x00 # Blauanteil
+    buffer[i_g+3] = 0x00
+    # blau
+    buffer[i_b+0] = 0x00 # Rotanteil
+    buffer[i_b+1] = 0x00 # Gruenanteil
+    buffer[i_b+2] = 0xff # Blauanteil
+    buffer[i_b+3] = 0x00
+    # weiss
+    buffer[i_w+0] = 0x00 # Rotanteil
+    buffer[i_w+1] = 0x00 # Gruenanteil
+    buffer[i_w+2] = 0x00 # Blauanteil
+    buffer[i_w+3] = 0xff
+
+    # Zeige den Puffer an
+    os.write(1, buffer)
+    # warte time_ms ms
+    time.sleep(time_ms*0.001)
--- a/apps/fading_pixels.py
+++ b/apps/fading_pixels.py
@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+try:
+    fps = float(sys.argv[3])
+except (IndexError, ValueError):
+    fps = 1.0
+
+
+def point2idx(x,y):
+    return 3*(x+Nx*y)
+
+def set_pixel_max(buffer, x, y):
+    idx = point2idx(x,y)
+    for i in range(3):
+        buffer[idx+i] = max(0x00, buffer[idx+i]-1)
+
+def set_pixel_rand(buffer, x, y):
+    idx = point2idx(x,y)
+    for i in range(3):
+        buffer[idx+i] = np.random.randint(0x00, 0xff)
+
+clock = pygame.time.Clock()
+buffer = bytearray(b"\x00"*(3*Nx*Ny))
+
+i = 0
+while True:
+    i = i + 1
+    for px in range(Nx):
+        for py in range(Ny):
+            set_pixel_max(buffer, px, py)
+    for j in range(10):
+        set_pixel_rand(buffer, np.random.randint(0, Nx), np.random.randint(0, Ny))
+        if i > 100:
+            os.write(1, buffer)
+            clock.tick_busy_loop(fps)
--- a/apps/fbcp
+++ b/apps/fbcp
--- a/apps/fdtd.py
+++ b/apps/fdtd.py
@ -0,0 +1,78 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# From the Meep tutorial: plotting permittivity and fields of a bent waveguide
+from __future__ import division
+
+import meep as mp
+#import matplotlib.pyplot as plt
+import os
+import sys
+import numpy as np
+from matplotlib import cm
+import pygame
+
+#mp.quiet(True)
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+try:
+    fps = float(sys.argv[3])
+except (IndexError, ValueError):
+    fps = 40
+
+
+
+cell = mp.Vector3(8,4,0)
+geometry = [mp.Block(mp.Vector3(12,1,mp.inf),
+                     center=mp.Vector3(0,0),
+                     material=mp.Medium(epsilon=24))
+            ]#,
+            #mp.Block(mp.Vector3(1,5,mp.inf),
+            #         center=mp.Vector3(1,1),
+            #         material=mp.Medium(epsilon=12))]
+#pml_layers = [mp.PML(2.0)]
+resolution = 10
+
+sources = [mp.Source(mp.ContinuousSource(frequency=0.15, width=20), # wavelength=2*(11**0.5)
+                     component=mp.Ez,
+                     center=mp.Vector3(0,0),
+                     size=mp.Vector3(0,1))
+]
+
+sim = mp.Simulation(cell_size=cell,
+                    geometry=geometry,
+                    sources=sources,
+                    resolution=resolution)
+
+
+buffer = np.empty([80,40])
+clock = pygame.time.Clock()
+
+def get_slice(sim):
+    val = sim.get_array(center=mp.Vector3(), size=cell, component=mp.Ez, arr=buffer)
+    #plt.figure()
+    #plt.imshow(val, interpolation='none', cmap='RdBu')
+    #plt.axis('off')
+    #plt.show()
+    out = (val - np.amin(val)) / (np.amax(val) - np.amin(val))
+    out = np.transpose(out) # or switch x and y
+    out = out.ravel()
+    out = 250*cm.RdBu(out)
+    out = out[:,0:3]
+    out = out.ravel()
+    out = out.astype(np.uint8).tobytes()
+    os.write(1, out)
+    clock.tick_busy_loop(fps)
+
+def plot_dielectric(sim):
+    val = sim.get_array(center=mp.Vector3(), size=cell, component=mp.Dielectric, arr=buffer)
+    #plt.figure()
+    #plt.imshow(val, interpolation='none', cmap='RdBu')
+    #plt.axis('off')
+    #plt.show()
+    #print()
+
+
+#sim.run(mp.at_beginning(plot_dielectric), mp.at_every(0.6, get_slice), until=200)
+sim.run(mp.at_every(0.00001, get_slice), until=1000)
--- a/apps/fibonacci-clock.py
+++ b/apps/fibonacci-clock.py
@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+import sys
+import os
+from time import strftime
+import time
+from math import ceil
+
+#Nx = int(sys.argv[1])
+#Ny = int(sys.argv[2])
+#param = sys.argv[3]
+Nx = 80
+Ny = 40
+
+
+buffer = bytearray(b"\x00"*(3*Nx*Ny))
+
+def SetPixel(x, y, r, g, b):
+    idx = 3*(x+Nx*y)
+    buffer[idx+0] = r
+    buffer[idx+1] = g
+    buffer[idx+2] = b
+
+def two(r,g,b):
+    for y in range (1,15):
+        for x in range (9,23):
+            SetPixel(x,y,r,g,b)
+
+def three(r,g,b):
+    for y in range (17,39):
+        for x in range (9,31):
+            SetPixel(x,y,r,g,b)
+
+def one(r,g,b):
+    for y in range (1,7):
+        for x in range (25,31):
+            SetPixel(x,y,r,g,b)
+
+def one_one(r,g,b):
+    for y in range (9,15):
+        for x in range (25,31):
+            SetPixel(x,y,r,g,b)
+
+def five(r,g,b):
+    for y in range (1,39):
+        for x in range (33,71):
+            SetPixel(x,y,r,g,b)
+
+def and_gate(hourcol, mincol):
+    if hourcol and mincol:
+        return 'y'
+    if hourcol:
+        return 'r'
+    if mincol:
+        return 'g'
+    if not hourcol and not mincol:
+        return 'b'
+
+def get_colsquares(hour, minute):
+    coldict = {
+        0: [0, 0, 0, 0, 0],
+        1: [0, 0, 0, 0, 1],
+        2: [0, 0, 0, 1, 1],
+        3: [0, 0, 1, 1, 0],
+        4: [0, 0, 1, 1, 1],
+        5: [0, 1, 1, 0, 0],
+        6: [0, 1, 1, 1, 0],
+        7: [0, 1, 1, 1, 1],
+        8: [1, 1, 0, 0, 0],
+        9: [1, 1, 0, 1, 0],
+        10: [1, 1, 1, 0, 0],
+        11: [1, 1, 1, 1, 0],
+        12: [1, 1, 1, 1, 1]
+    }
+
+    i = 0
+    result = []
+    while i < 5:
+        result.append( and_gate(coldict[hour][i], coldict[minute][i]) )
+        i += 1
+    return result
+
+def gettime():
+    hour = int(strftime('%I'))
+    minute12 = ceil(int(strftime('%M'))/5.0)
+    minute = int(strftime('%M'))
+    
+    return hour, minute12, minute
+
+while True:
+    rgbw = {
+        'r' : (255, 0, 0),
+        'g' : (0, 255, 0),
+        'b' : (0, 0, 255),
+        'y' : (255, 255, 0)
+        }
+
+    hour, minute12, minute = gettime()
+    colsq = get_colsquares(hour, minute12)
+
+
+    five(rgbw[colsq[0]][0],rgbw[colsq[0]][1],rgbw[colsq[0]][2])
+    three(rgbw[colsq[1]][0],rgbw[colsq[1]][1],rgbw[colsq[1]][2])
+    two(rgbw[colsq[2]][0],rgbw[colsq[2]][1],rgbw[colsq[2]][2])
+    one_one(rgbw[colsq[3]][0],rgbw[colsq[3]][1],rgbw[colsq[3]][2])
+    one(rgbw[colsq[4]][0],rgbw[colsq[4]][1],rgbw[colsq[4]][2])
+
+    os.write(1, buffer)
+    time.sleep(1)
+    #grid()
--- a/apps/flicker
+++ b/apps/flicker
--- a/apps/lines.py
+++ b/apps/lines.py
@ -13,7 +13,7 @@ Ny = int(sys.argv[2])
 PixelsPerFrame = 20
 NumLines = 7
 LineGenerationRate = 0.2
-time_ms = 10
+time_ms = 20
 try:
    time_ms = int(sys.argv[3])
 except:
--- a/apps/maze
+++ b/apps/maze
--- a/apps/pendlum.py
+++ b/apps/pendlum.py
@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+import numpy as np
+import sys
+import os
+import time
+import colorsys
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+N = 100
+iterations = 2
+try:
+    N = int(sys.argv[3])
+except:
+    pass
+
+def rk4(f, x, dt):
+    k1 = f(x)
+    k2 = f(x+k1*dt/2)
+    k3 = f(x+k2*dt/2)
+    k4 = f(x+k3*dt)
+    return x+dt*(k1+2*k2+2*k3+k4)/6.0
+dt = 0.08 
+m = 1
+l = 1
+g = 1
+
+def sq(x): return x*x
+
+def rhs(x):
+    phi1 = x[0]
+    p1 = x[1]
+    phi2 = x[2]
+    p2 = x[3]
+
+    dphi1 = 6/(m*l*l)*(2*p1-3*np.cos(phi1-phi2)*p2)/(16-9*sq(np.cos(phi1-phi2))) 
+    dphi2 = 6/(m*l*l)*(8*p2-3*np.cos(phi1-phi2)*p1)/(16-9*sq(np.cos(phi1-phi2)))
+
+    dp1 = -0.5*m*l*l*(dphi1*dphi2*np.sin(phi1-phi2)+3*g/l*np.sin(phi1))
+    dp2 = -0.5*m*l*l*(-dphi1*dphi2*np.sin(phi1-phi2)+g/l*np.sin(phi2))
+    return np.array([dphi1, dp1, dphi2, dp2])
+
+s = np.array([np.pi+0.1, 0, np.pi-0.1, 0])
+
+angles = np.linspace(np.pi, np.pi/3, N)+np.random.uniform(-np.pi/6/N, np.pi/6/N, N)
+angles = np.random.uniform(-np.pi/6, np.pi/3, N)+np.pi
+states = [np.array([np.pi, 0, a, 0]) for a in angles]
+
+def clamp(x, min_, max_):
+    return  max(min_, min(max_, x))
+
+buffer = bytearray(b"\x00"*Nx*Ny*3)
+
+def setpixel(x, y, r, g, b):
+    xi = int(Nx*(x+1.2)/2.4)
+    yi = int(Ny*(y+1.2)/2.4)
+    if xi < 0 or xi >= Nx or yi < 0 or yi >= Ny:
+        return
+    idx = xi+Nx*yi
+    buffer[3*idx+0] = r
+    buffer[3*idx+1] = g
+    buffer[3*idx+2] = b
+timestep = 0
+timefac = 0.03
+while True:
+    timestep += 1
+    for s, i in zip(states, range(len(states))):
+        phi1 = s[0]
+        phi2 = s[2]
+        x1 = np.sin(phi1)*l
+        y1 = np.cos(phi1)*l
+        x2 = np.sin(phi2)*l+x1
+        y2 = np.cos(phi2)*l+y1
+        h = 0.2*i/N+0*timestep*timefac/iterations
+        r, g, b = colorsys.hsv_to_rgb(h%1, 1, 1)
+        setpixel(x2, y2, int(r*255), int(g*255), int(b*255))
+        states[i] = rk4(rhs, s, dt/iterations)
+    if timestep > 10*iterations and timestep % iterations == 0:
+        #time.sleep(0.01)
+        os.write(1, buffer)
+
--- a/apps/pixelflut
+++ b/apps/pixelflut
--- a/apps/plane_wave.py
+++ b/apps/plane_wave.py
@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+try:
+    frequency = float(sys.argv[3])
+except (IndexError, ValueError):
+    frequency = 5
+
+fps = 30
+amplitude = 105
+offset = 150
+t = 0
+
+x,y = np.meshgrid(np.linspace(0, 2*np.pi * min(1, Nx/Ny), Nx),  np.linspace(0, 2*np.pi * min(1, Ny/Nx), Ny))
+kx = x + y
+
+clock = pygame.time.Clock()
+
+while True:
+    t = t + 1e-3
+    R = amplitude * np.sin(kx - 2 * np.pi * frequency * t) + offset
+    G = amplitude * np.sin(kx - 2 * np.pi * frequency  * t + 2*np.pi/3) + offset
+    B = amplitude * np.sin(kx - 2 * np.pi * frequency  * t + 4*np.pi/3) + offset
+
+    out = np.dstack((R,G,B)).astype(np.uint8).tobytes()
+    os.write(1, out)
+    clock.tick_busy_loop(fps)
--- a/apps/predprey
+++ b/apps/predprey
--- a/apps/quadratic.py
+++ b/apps/quadratic.py
@ -0,0 +1,82 @@
+#!/usr/bin/env python3
+
+import numpy as np
+import os
+import sys
+import time
+import colorsys
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+iterations = 10
+
+class Slider:
+    def __init__(self, lo, hi, step, pos=0):
+        self.lo = lo
+        self.hi = hi
+        self.stepSize = step
+        self.pos = pos
+        self.dir = 1
+    
+    def step(self):
+        if self.pos >= self.hi:
+            self.dir = -1
+        elif self.pos <= self.lo:
+            self.dir = 1
+        
+        self.pos += self.dir * self.stepSize
+        return self.pos
+
+Sa = Slider(-10, 10, 0.1/iterations, np.random.uniform(-2, 2))
+Sb = Slider(-10, 10, 0.2/iterations, np.random.uniform(-2, 2))
+Sc = Slider(-10, 10, 0.2/iterations, np.random.uniform(-2, 2))
+Sd = Slider(-10, 10, 0.1/iterations, np.random.uniform(-2, 2))
+Se = Slider(-10, 10, 0.2/iterations, np.random.uniform(-2, 2))
+Sf = Slider(0, 6, 0.05/iterations, 0)
+
+x, y = np.meshgrid(
+    np.linspace(-4, 4, Nx),
+    np.linspace(-4, 4, Ny))
+
+color = 1.0
+
+img = np.zeros( [Ny, Nx, 3] )
+
+cr = 1.0
+cg = 0.5
+cb = 0.25
+
+step = 0
+while True:
+    a = Sa.step()
+    b = Sb.step()
+    c = Sc.step()
+    d = Sd.step()
+    e = Se.step()
+    f = Sf.step()
+
+    Sa.pos += b*0.001
+    Sb.pos += c*0.001
+    Sc.pos += d*0.001
+    Sd.pos += e*0.001
+    Se.pos += f*0.001
+    Sf.pos += a*0.001
+
+    curve = (np.abs(a*x**2 + b*x*y + c*y**2 + d*x + e*y + f) <= 1.5)*1
+
+    cr, cg, cb = colorsys.hsv_to_rgb(color, 1, 1)
+
+    img[:,:,0] = np.where(curve > 0, curve*cr*255, img[:,:,0])
+    img[:,:,1] = np.where(curve > 0, curve*cg*255, img[:,:,1])
+    img[:,:,2] = np.where(curve > 0, curve*cb*255, img[:,:,2])
+
+    step += 1
+    if step % iterations == 0:
+        out = img.reshape((Nx*Ny*3,)).astype(np.uint8)
+        os.write(1, out.tobytes())
+        time.sleep(0.01)
+
+    color = (color+0.01/iterations ) % 1
+
+
+
--- a/apps/rps.py
+++ b/apps/rps.py
@ -0,0 +1,71 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+try:
+    frequency = float(sys.argv[3])
+except (IndexError, ValueError):
+    frequency = 5
+
+fps = 10
+
+nstates = 5
+colors = np.linspace(0, 255, nstates, dtype=np.uint8)
+
+red = np.random.choice(colors, size=(Ny,Nx))
+green = np.zeros((Ny, Nx))
+blue = np.zeros((Ny, Nx))
+grid = np.dstack((red, green, blue)).astype(np.uint8)
+
+
+clock = pygame.time.Clock()
+
+def clamp(value, min, max):
+  if value > max:
+      return max
+  elif value < min:
+      return min
+  return value
+
+
+while True:
+
+  for px in range(Nx):
+    for py in range(Ny):
+      statecount = np.zeros(nstates, dtype=np.uint8)
+      for ix in [-1, 0, 1]:
+        for iy in [-1, 0, 1]:
+
+          if (px+ix) >= Nx or (px+ix) <= 0 or (py+iy) >= Ny or (py+iy) <= 0:
+            i = 0
+          else:
+            i = int(grid[py + iy, px + ix, 0] / colors[1])
+
+          #i = int(grid[(px + ix) % Nx, (py + iy) % Ny, 0] / colors[1])
+          #i = int(grid[max(min(px + ix, Nx-1), 0), max(min(py + iy, Ny-1), 0), 0] / colors[1])
+          #print(px, py, max(min(px + ix, Nx-1), 0), max(min(py + iy, Ny-1), 0), file=sys.stderr)
+          statecount[i] = statecount[i] + 1
+
+      i = int(grid[py, px, 0] / colors[1])
+      i_successor = (i+1) % colors.size
+
+      if statecount[i_successor] >= 2: #(2-np.random.randint(0, 2)):
+        grid[py, px, 0] = colors[i_successor]
+
+#    for i in range(Nx*Ny):
+#      c1 = clamp(i % Nx - 1, 0, Nx - 1) 
+#      c2 = clamp(int(i / Nx) - 1, 0, Ny - 1)
+#      neighbourhood = grid[c1:(c1+3), c2:(c2+3), 0]
+#      #print(neighbourhood.size, file=sys.stderr)
+
+
+
+
+  out = grid.tobytes()
+  os.write(1, out)
+  clock.tick_busy_loop(fps)
--- a/apps/sinic.py
+++ b/apps/sinic.py
@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+
+import numpy as np
+import os
+import sys
+import time
+import colorsys
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+iterations = 2
+
+class Slider:
+    def __init__(self, lo, hi, step, pos=0):
+        self.lo = lo
+        self.hi = hi
+        self.stepSize = step
+        self.pos = pos
+        self.dir = 1
+    
+    def step(self):
+        if self.pos >= self.hi:
+            self.dir = -1
+        elif self.pos <= self.lo:
+            self.dir = 1
+        
+        self.pos += self.dir * self.stepSize
+        return self.pos
+
+x, y = np.meshgrid(
+    np.linspace(-2, 2, Nx),
+    np.linspace(-2, 2, Ny))
+
+img = np.zeros( [Ny, Nx, 3] )
+
+Sa = Slider(-3, 3, 0.01, np.random.uniform(-1, 1))
+Sb = Slider(-3, 3, 0.01, np.random.uniform(-1, 1))
+Sc = Slider(0, 1, 0.005, np.random.uniform(-1, 1))
+
+Scolor = Slider(0, 1, 0.001/iterations, 0)
+
+step = 0
+while True:
+    a = Sa.step()
+    b = Sb.step()
+    c = Sc.step()
+
+    Sa.pos += b*0.001
+    Sb.pos += c*0.001
+    Sc.pos += a*0.001
+
+    curve = (np.clip(np.sin(c) + np.sin(np.sin(a*x) + np.cos(b*y)) - np.cos(np.sin(b*x*y) + np.cos(b*x)), 0, 1))
+
+    cr, cg, cb = colorsys.hsv_to_rgb(Scolor.step(), 1, 1)
+
+    img[:,:,0] = curve*cr*255
+    img[:,:,1] = curve*cg*255
+    img[:,:,2] = curve*cb*255
+
+    step += 1
+    if step % iterations == 0:
+        out = img.reshape((Nx*Ny*3,)).astype(np.uint8)
+        os.write(1, out.tobytes())
+        time.sleep(0.01)
+
+
+
--- a/apps/sinic2.py
+++ b/apps/sinic2.py
@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+
+import numpy as np
+import os
+import sys
+import time
+import colorsys
+
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+iterations = 2
+
+class Slider:
+    def __init__(self, lo, hi, step, pos=0):
+        self.lo = lo
+        self.hi = hi
+        self.stepSize = step
+        self.pos = pos
+        self.dir = 1
+    
+    def step(self):
+        if self.pos >= self.hi:
+            self.dir = -1
+        elif self.pos <= self.lo:
+            self.dir = 1
+        
+        self.pos += self.dir * self.stepSize
+        return self.pos
+
+x, y = np.meshgrid(
+    np.linspace(-2, 2, Nx),
+    np.linspace(-2, 2, Ny))
+
+img = np.zeros( [Ny, Nx, 3] )
+
+Sa = Slider(-3, 3, 0.01, np.random.uniform(-1, 1))
+Sb = Slider(-3, 3, 0.01, np.random.uniform(-1, 1))
+Sc = Slider(0, 1, 0.005, np.random.uniform(-1, 1))
+
+Scolor = Slider(0, 1, 0.001/iterations, 0)
+
+
+step = 0
+while True:
+    a = Sa.step()
+    b = Sb.step()
+    c = Sc.step()
+
+    Sa.pos += b*0.001
+    Sb.pos += c*0.001
+    Sc.pos += a*0.001
+
+    curve = np.clip(c+np.sin(a*x*x-b*y*y)-np.sin(a*x+b*y)-np.cos(a*b*x*y), 0, 1)
+
+    cr, cg, cb = colorsys.hsv_to_rgb(Scolor.step(), 1, 1)
+
+    img[:,:,0] = curve*cr*255
+    img[:,:,1] = curve*cg*255
+    img[:,:,2] = curve*cb*255
+
+    step += 1
+    if step % iterations == 0:
+        out = img.reshape((Nx*Ny*3,)).astype(np.uint8)
+        os.write(1, out.tobytes())
+        time.sleep(0.01)
+
+
+
--- a/apps/strobo.py
+++ b/apps/strobo.py
@ -2,24 +2,33 @@

 import os
 import sys
+import time


 Nx = int(sys.argv[1])
 Ny = int(sys.argv[2])

-param = 10
-
+p1 = 20
+p2 = 10
 try:
-    param = int(sys.argv[3])
+    param = sys.argv[3]
+    p = param.split(",")
+    p1 = int(p[0])
+    p2 = int(p[1])
 except:
    pass

 buffera = bytearray(b"\x00" * (3 * Nx * Ny))
 bufferb = bytearray(b"\xFF" * (3 * Nx * Ny))
+cnt = 0

+os.write(2,b"Usage: Parameter: \"20,10\"\n   -> updates every 20*0.01s, every 10th frame is white") 
 while True:

        os.write(1, buffera)
-        time.sleep(param*0.01)
-        os.write(1, bufferb)
-        time.sleep(param*0.01)
+        time.sleep(p1*0.01)
+        if cnt == p2-1:
+            cnt = 0
+            os.write(1, bufferb)
+            time.sleep(p1*0.01)
+        cnt += 1
--- a/apps/swifthohenberg.py
+++ b/apps/swifthohenberg.py
@ -0,0 +1,63 @@
+#!/usr/bin/env python3
+import sys
+import os
+import numpy as np
+Nx = int(sys.argv[1])
+Ny = int(sys.argv[2])
+param = sys.argv[3]
+
+buffer = bytearray(b" "*(3*Nx*Ny))
+
+
+Lx = 32 #128 #Physikalische Laenge des Gebietes in x-Richtung
+Ly =32 #128#Physikalische Laenge des Gebietes in y-Richtung
+
+x, y = np.meshgrid(np.arange(Nx)* Lx/Nx, np.arange(Ny)* Ly/Ny) #x-Array
+kx, ky = np.meshgrid(np.fft.fftfreq(Nx,Lx/(Nx*2.0*np.pi)), np.fft.fftfreq(Ny,Ly/(Ny*2.0*np.pi)))
+ksq = kx*kx + ky*ky
+
+c = 0.0+(np.random.random((Ny,Nx))-0.5)*0.1
+eps=0.3
+delta=0.0
+#eps = 0.1
+#delta = 1.0
+
+t = 0.0
+dt = 0.01
+T_End = 300000 
+N_t = int(T_End / dt)
+
+plotEveryNth = 100
+ck = np.fft.fft2(c) #FFT(c)
+# Lineare Terme
+def rhs_lin(ksq):
+    result=eps-(1.0-ksq)**2
+    return result
+
+Eu=1.0/(1.0-dt*rhs_lin(ksq))
+i = 0
+def lerp_sat(a, t, b):
+    v = (1-t)*a+t*b
+    v = int(v)
+    if v < 0:
+        v = 0
+    if v > 255:
+        v = 255
+    return v
+
+while True:
+    i+= 1
+    ck=Eu*(ck+dt*(delta*np.fft.fft2(np.fft.ifft2(ck)**2)-np.fft.fft2(np.fft.ifft2(ck)**3)))
+    c=np.fft.ifft2(ck)
+    eps = 0.1+0.2*np.cos(i/10000)
+    delta = np.sin(i/10000)
+    if(i % plotEveryNth == 0):
+        myc = c.real
+        myc = (myc-np.min(myc))/(np.max(myc)-np.min(myc))
+        for px in range(Nx):
+            for py in range(Ny):
+                idx = 3*(px+Nx*py)
+                buffer[idx+0] = lerp_sat(0xff, myc[py,px], 0x00)
+                buffer[idx+1] = lerp_sat(0x00, myc[py,px], 0xff)
+                buffer[idx+2] = 0
+        os.write(1, buffer)
--- a/apps/textscroll.py
+++ b/apps/textscroll.py
@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import pygame
+import paho.mqtt.client as mqtt
+import random
+
+class ScrollingTextDisplay:
+    def __init__(self, width: int, height: int):
+        pygame.init()
+        self.width = width
+        self.height = height
+        self.screen = pygame.Surface((width, height))
+        self.clock = pygame.time.Clock()
+
+        # Liste der Standardtexte
+        self.default_texts = [
+            "Text per MQTT an: mqtt.chaospott.de Topic: test/topic ",  # Hardcodierte IP-Adresse
+            "Willkommen beim MQTT-Display!",
+            "Aktuelle Nachrichten hier empfangen.",
+            "MQTT-Server verbindet...",
+            "Textnachricht anzeigen...",
+        ]
+        self.error_text = "MQTT-Server nicht erreichbar!"
+        self.text = self.get_random_default_text()  # Zufälligen Standardtext auswählen
+        self.text_x = width
+
+        # Schriftart 'PressStart2P-Regular' aus dem Verzeichnis 'apps' laden
+        self.font = pygame.font.Font("PressStart2P-Regular.ttf", 16)  # Schriftgröße anpassen
+
+        # Fest codierte MQTT-Einstellungen
+        self.mqtt_broker = "mqtt.chaospott.de"  # Beispiel IP-Adresse des MQTT-Brokers
+        self.topic = "test/topic"       # Beispiel Topic
+        self.mqtt_client = mqtt.Client()
+        self.mqtt_client.on_connect = self.on_connect
+        self.mqtt_client.on_message = self.on_message
+        self.mqtt_client.on_disconnect = self.on_disconnect
+
+        # Versuche die Verbindung aufzubauen
+        self.connect_to_mqtt()
+
+        # Zähler für die angezeigte Nachricht
+        self.message_display_count = 0
+
+    def get_random_default_text(self):
+        """Wählt zufällig einen Standardtext aus der Liste aus."""
+        return random.choice(self.default_texts)
+
+    def connect_to_mqtt(self):
+        try:
+            self.mqtt_client.connect(self.mqtt_broker)
+            self.mqtt_client.loop_start()
+        except Exception as e:
+            print(f"Verbindungsfehler zu MQTT-Server: {e}")
+            self.text = self.error_text  # Setze Fehlertext für die Anzeige
+            self.text_x = self.width  # Text von rechts starten
+
+    def on_connect(self, client, userdata, flags, rc):
+        if rc == 0:
+            client.subscribe(self.topic)
+            self.text = self.get_random_default_text()  # Setze einen zufälligen Standardtext
+        else:
+            print(f"Fehler beim Verbinden mit MQTT: Code {rc}")
+            self.text = self.error_text
+
+    def on_disconnect(self, client, userdata, rc):
+        if rc != 0:
+            print("Verbindung zum MQTT-Server verloren. Erneuter Verbindungsversuch...")
+            self.text = self.error_text
+            self.text_x = self.width  # Fehlertext von rechts starten
+            # Erneut die Verbindung aufbauen
+            self.connect_to_mqtt()
+
+    def on_message(self, client, userdata, msg):
+        self.text = msg.payload.decode("utf-8") if msg.payload.decode("utf-8") else self.get_random_default_text()
+        self.text_x = self.width  # Text von rechts starten
+        self.message_display_count = 3  # Setze den Zähler auf 3
+
+    def draw_text(self):
+        self.screen.fill((0, 0, 0))  # Bildschirm leeren
+        text_surface = self.font.render(self.text, True, (255, 255, 255))
+        text_width = text_surface.get_width()  # Breite des Textes ermitteln
+        text_y = (self.height - text_surface.get_height()) // 2  # Y-Position zentrieren
+        self.screen.blit(text_surface, (self.text_x, text_y))  # Text zentriert zeichnen
+
+    def display(self):
+        while True:
+            text_surface = self.font.render(self.text, True, (255, 255, 255))
+            text_width = text_surface.get_width()  # Breite des Textes ermitteln
+
+            self.text_x -= 1  # Text nach links verschieben
+            if self.text_x < -text_width:  # Wenn der Text komplett verschwunden ist
+                self.text_x = self.width  # Text von rechts neu starten
+                # Falls der Text leer ist, setze Standardtext oder Fehlertext
+                if self.message_display_count > 0:
+                    self.message_display_count -= 1
+                else:
+                    self.text = self.get_random_default_text()  # Setze zurück auf zufälligen Standardtext
+
+            self.draw_text()
+            os.write(1, pygame.image.tostring(self.screen, "RGB"))
+            self.clock.tick(30)
+
+if __name__ == "__main__":
+    Nx = int(sys.argv[1])  # Breite des Displays
+    Ny = int(sys.argv[2])  # Höhe des Displays
+
+    display = ScrollingTextDisplay(Nx, Ny)
+    display.display()
+
--- a/apps/wget.sh
+++ b/apps/wget.sh
@ -0,0 +1,23 @@
+#!/bin/bash
+#pkill -9 wget
+if [ ! -d /tmp/video ]; then
+	mkdir /tmp/video
+fi
+rm -f /tmp/video/*
+
+if [[ ${3} =~ .*gif$ ]]; then
+	wget -O "/tmp/video/$(basename ${3})" "${3}" && ffmpeg -loglevel -8 -re -ignore_loop 0 -i "/tmp/video/$(basename ${3})" -pix_fmt rgb24 -vf "scale=(iw*sar)*min(${1}/(iw*sar)\,${2}/ih):ih*min(${1}/(iw*sar)\,${2}/ih), pad=${1}:${2}:(${1}-iw*min(${1}/iw\,${2}/ih))/2:(${2}-ih*min(${1}/iw\,${2}/ih))/2" -sws_flags bicubic -sws_dither bayer -vcodec rawvideo -f image2pipe -
+elif [[ ${3} =~ .*(jpg|jpeg|png|bmp|tiff|webp)$ ]]; then
+	wget -q -O "/tmp/video/$(basename ${3})" "${3}";
+	ffmpeg -i "/tmp/video/$(basename ${3})" -pix_fmt rgb24 -vf "scale=${1}x${2}" -vcodec rawvideo -f image2pipe - | tee /tmp/video/matrix
+	while true; do
+		cat /tmp/video/matrix
+		sleep 1;
+	done
+else
+
+
+	wget -O - -q "${3}" | tee "/tmp/video/$(basename ${3})" | ffmpeg -loglevel -8 -f alsa default -re -i - -pix_fmt rgb24 -vf "scale=${1}x${2}" -sws_flags bicubic -sws_dither bayer -vcodec rawvideo -f image2pipe -
+       	ffmpeg -loglevel -8 -f alsa default -stream_loop -1 -re -i "/tmp/video/$(basename ${3})" -pix_fmt rgb24 -vf "scale=${1}x${2}" -sws_flags bicubic -sws_dither bayer -vcodec rawvideo -f image2pipe -
+
+fi
--- a/apps/wolfram.py
+++ b/apps/wolfram.py
@ -0,0 +1,75 @@
+#!/usr/bin/env python3
+
+import sys
+import os
+import numpy as np
+import pygame
+import time
+
+Nx = int(sys.argv[1])  # Breite des Displays
+Ny = int(sys.argv[2])  # Höhe des Displays
+fps = 30
+
+# Liste der Wolfram-Regeln, die angezeigt werden sollen
+rules = [30, 90, 110, 60, 150, 126, 45, 105, 75, 214]
+pause_duration = 5  # Dauer der Pause zwischen den Mustern in Sekunden
+
+# Umwandlung der Regelnummer in eine Binärliste
+def get_rule_bin(rule_number):
+    return np.array([int(x) for x in np.binary_repr(rule_number, width=8)])
+
+# Regel für die nächste Generation
+def next_gen(current_gen, rule_bin):
+    padded = np.pad(current_gen, (1,), mode='constant')
+    new_gen = np.zeros_like(current_gen)
+    
+    for i in range(1, len(padded) - 1):
+        neighborhood = padded[i-1:i+2]
+        index = 7 - (neighborhood[0] * 4 + neighborhood[1] * 2 + neighborhood[2])
+        new_gen[i-1] = rule_bin[index]
+    
+    return new_gen
+
+# Funktion, um eine zufällige Farbe zu erzeugen
+def random_color():
+    return np.random.randint(0, 256, size=3)
+
+# Haupt-Loop für die Animation
+clock = pygame.time.Clock()
+
+while True:
+    for rule_number in rules:
+        rule_bin = get_rule_bin(rule_number)
+
+        # Initialisiere ein leeres Display (alle Zellen sind tot)
+        cells = np.zeros((Ny, Nx), dtype=np.uint8)
+
+        # Setze die mittlere Zelle der ersten Reihe auf 1 (Zelle ist lebendig)
+        cells[0, Nx // 2] = 1
+
+        # Erstelle einen Farbarray für die Zellen
+        color_map = np.zeros((Ny, Nx, 3), dtype=np.uint8)
+
+        # Animation Schleife
+        for row in range(1, Ny):
+            cells[row] = next_gen(cells[row - 1], rule_bin)
+
+            # Setze die Farben für die lebendigen Zellen
+            color_map[row] = np.where(cells[row][:, None], random_color(), 0)  # Zufällige Farbe für lebende Zellen
+
+            # Erstelle das Bild aus den Zellen
+            image = np.zeros((Ny, Nx, 3), dtype=np.uint8)
+            for r in range(Ny):
+                for c in range(Nx):
+                    if cells[r, c]:
+                        image[r, c] = color_map[r, c]
+
+            # Schreibe das Bild in den Output-Stream
+            os.write(1, image.tobytes())
+
+            # Warte für die nächste Frame
+            clock.tick(fps)
+
+        # Pause von 5 Sekunden nach jedem Muster
+        time.sleep(pause_duration)
+
--- a/apps/youtubedl.sh
+++ b/apps/youtubedl.sh
@ -1,6 +1,7 @@
 #!/bin/bash
 export PATH="$PATH:/home/deckensteuerung/.config/bin"
-youtube-dl -f 'worst[abr>=96]' --no-progress --output - ${3}  | ffmpeg -f alsa default -re -i - -pix_fmt rgb24 -vf "scale=${1}x${2}" -sws_flags bicubic -sws_dither bayer -vcodec rawvideo -f image2pipe -
+yt-dlp --no-progress --output - ${3}  | ffmpeg -f alsa default -re -i - -pix_fmt rgb24 -vf "scale=${1}x${2}" -sws_flags bicubic -sws_dither bayer -vcodec rawvideo -f image2pipe -
+#youtube-dl -f 'worst[abr>=96]' --no-progress --output - ${3}  | ffmpeg -f alsa default -re -i - -pix_fmt rgb24 -vf "scale=${1}x${2}" -sws_flags bicubic -sws_dither bayer -vcodec rawvideo -f image2pipe -
 #youtube-dl --no-progress --output - ${3}  | ffmpeg -re -i - -pix_fmt rgb24 -vf "scale=${1}x${2}" -sws_flags bicubic -sws_dither bayer -vcodec rawvideo -f image2pipe -

 exit 0
--- a/config.py
+++ b/config.py
@ -5,7 +5,7 @@ ScreenX = 80
 #height
 ScreenY = 40

-DefaultBrightness = 1.0
+DefaultBrightness = 0.6

 Serial = "/dev/ttyACM0"

@ -15,6 +15,7 @@ NoDataTimeout = 40
 LogLevel = logging.DEBUG

 UseGui = True
+GuiFPS = 20
 GuiScaleFactor = 15

 WebHost = "0.0.0.0"
@ -22,26 +23,53 @@ WebPort = 8000

 # first app is always running as default    
 Apps = [
-    {"guiname": "Lines", "name": "lines", "cmd": "apps/lines.py", "persistent": False},
-    
+
+    {"name": "backlight", "cmd": "apps/backlight.py", "white": True},
+
+    {"guiname": "Lines", "name": "lines", "cmd": "./lines.py", "persistent": False, "path": "./apps/"},
+    {"guiname": "Wolfram", "name": "wolfram", "cmd": "./wolfram.py", "persistent": False, "path": "./apps/"},
+    {"guiname": "Digi Clock", "name": "digiclock", "cmd": "./digi_clock.py", "persistent": False, "path": "./apps/"},
+    {"guiname": "Text Scroller MQTT", "name": "textscroll", "cmd": "./textscroll.py", "persistent": False, "path": "./apps/"},
    {"guiname": "Flicker", "name": "flicker", "cmd": "apps/flicker"},
+
    {"guiname": "Pixelflut", "name": "pixelflut", "cmd": "apps/pixelflut", "persistent": True},
-    {"guiname": "Pong", "name": "pong", "cmd": "apps/pong.py"},
+    # {"guiname": "Pong", "name": "pong", "cmd": "apps/pong.py"},
    {"guiname": "YoutubeDL", "name": "youtubedl", "cmd": "apps/youtubedl.sh", "persistent": False},
-    {"guiname": "Show Framebuffer", "name": "fbcp", "cmd": ["apps/fbcp", "/dev/fb0"]},
+    # {"guiname": "Show Framebuffer", "name": "fbcp", "cmd": ["apps/fbcp", "/dev/fb0"]},
    {"guiname": "Strobo", "name": "strobo", "cmd": "apps/strobo.py"},
-    {"guiname": "Beispiel", "name": "example", "cmd": "apps/example.py"},
+    # {"guiname": "Beispiel", "name": "example", "cmd": "apps/example.py"},
+    # {"guiname": "Beispiel2", "name": "example2", "cmd": "apps/example2.py", "white": True},
+    {"guiname": "Fibonacci Clock", "name": "fibonacci-clock", "cmd": "apps/fibonacci-clock.py"},
+    {"guiname": "Wget Video/Gif/Images", "name": "wget", "cmd": "apps/wget.sh", "persistent": False},
+

    # juergen/pixelfoo
-    {"guiname": "Colored noise", "name": "cnoise", "cmd": "apps/cnoise", "persistent": False},
-    {"guiname": "Dual Moodlight", "name": "bimood", "cmd": "apps/bimood", "persistent": False},
-    {"guiname": "Maze", "name": "maze", "cmd": "apps/maze", "persistent": False},
-    {"guiname": "Dual Maze", "name": "dualmaze", "cmd": "apps/dualmaze", "persistent": False, "persistent": False},
-    {"guiname": "Predator & Prey", "name": "predprey", "cmd": "apps/predprey", "persistent": False},
+    {"guiname": "Congress noise", "name": "cnoise", "cmd": "pixelfoo/target/release/cnoise", "persistent": False},
+    {"guiname": "Game of Life", "name": "life", "cmd": "pixelfoo/target/release/life", "persistent": False},
+    {"guiname": "Matrix Code", "name": "matrix-code", "cmd": "pixelfoo/target/release/matrix-code", "persistent": False},
+    {"guiname": "Lorenz Attractor", "name": "lorenz", "cmd": "pixelfoo/target/release/lorenz", "persistent": False},
+    {"guiname": "Dual Moodlight", "name": "bimood", "cmd": "pixelfoo/target/release/bimood", "persistent": False},
+    {"guiname": "Maze", "name": "maze", "cmd": "pixelfoo/target/release/maze", "persistent": False},
+    {"guiname": "Dual Maze", "name": "dualmaze", "cmd": "pixelfoo/target/release/dualmaze", "persistent": False, "persistent": False},
+    {"guiname": "Predator & Prey", "name": "predprey", "cmd": "pixelfoo/target/release/predprey", "persistent": False},

+    # { "guiname": "Beat Saber Ceiling", "name": "beatsaberceiling", "cmd": "./beatsaberceiling.py", "path": "apps/beatsaberceiling" },
+
+    # mathpixel
+    {"guiname": "Structure formation", "name": "swifthohenberg", "cmd": "apps/swifthohenberg.py", "persistent": False},
+    {"guiname": "Quadratisch", "name": "quadratic", "cmd": "apps/quadratic.py"},
+    {"guiname": "Pendel", "name": "pendulum", "cmd": "apps/pendlum.py"},
+    {"guiname": "Konvergenz", "name": "convergence", "cmd": "apps/convergence.py"},
+    {"guiname": "Sinic", "name": "sinic", "cmd": "apps/sinic.py"},
+    {"guiname": "Sinic 2", "name": "sinic2", "cmd": "apps/sinic2.py"},
+
+    # pixelthud
+    {"guiname": "Fading Pixels", "name": "fadingpxls", "cmd": "apps/fading_pixels.py", "persistent": False},
+    {"guiname": "Plane Wave", "name": "planewave", "cmd": "apps/plane_wave.py", "persistent": False},
+    {"guiname": "Rock-paper-scissors-spock-lizard", "name": "rps", "cmd": "apps/rps.py", "persistent": False},
+    {"guiname": "Doom Fire", "name": "doomfire", "cmd": "apps/doom_fire_psx2.py", "persistent": False},
+    # {"guiname": "Maxwell FDTD", "name": "fdtd", "cmd": "apps/fdtd.py", "persistent": False},

-    #{"guiname": "Fibonacci Clock", "name": "fibonacci-clock", "cmd": "apps/fibonacci-clock.py"},
-    
    #{"guiname": "Stream", "name": "stream", "cmd": "apps/stream.sh", "persistent": False},
    #{"guiname": "Wget Video/Gif/Images", "name": "wget", "cmd": "apps/wget.sh", "persistent": False},
    #{"guiname": "Tetris", "name": "tetris", "cmd": "apps/deckentetris/deckentetris.py", "persistent": False},
@ -53,14 +81,14 @@ Apps = [
 ]   

 # load additional apps from config/
-import os
-import os.path
-configs = os.listdir("configs/")
-import importlib
-for config in configs:
-    file, ext = os.path.splitext(os.path.basename(config))
-    if ext != ".py" or file[0] == "_":
-        continue
-    modname = "configs."+file
-    lib = importlib.import_module(modname)
-    Apps += lib.Apps
+# import os
+# import os.path
+# configs = os.listdir("configs/")
+# import importlib
+# for config in configs:
+#     file, ext = os.path.splitext(os.path.basename(config))
+#     if ext != ".py" or file[0] == "_":
+#         continue
+#     modname = "configs."+file
+#     lib = importlib.import_module(modname)
+#     Apps += lib.Apps
--- a/configs/init.py
+++ b/configs/init.py
--- a/filter/test.png
+++ b/filter/test.png
--- a/html/index.html
+++ b/html/index.html
@ -4,9 +4,10 @@
        <title>Pixelserver Interface</title>
    </head>
    
-    <body>
-        <h1>Andreas <i>DEBUG</i> Interface</h1>
+    <body style="display: grid; grid-template-columns: auto auto auto;">
+        <h1 style="grid-column: 1 / 4; text-align: center;">Andreas <i>production-ready</i> Interface</h1>

+        <div>
        <h2>Kommando:</h2>
        <form id='in' onSubmit="return request()">
            <select id="list"></select>
@ -19,17 +20,49 @@
            <input id="brightness" value=1.0 /><br/>
            <button id="sendbrightness">Setzen</button>
        </form>
-
+    </div>
+    <div style="border-left: solid 1px; padding-left: 10px;">
        <h2>Gamma:</h2>
        <form id='gammeform' onSubmit="return setgamma()">
            Rot: <input id="gammar" value=2.8 /><br/>
            Grün: <input id="gammag" value=2.65 /><br/>
            Blau: <input id="gammab" value=2.65 /><br/>
+            Weiß: <input id="gammaw" value=2.65 /><br/>
            <button id="sendgamma">Setzen</button>
        </form>

+        <h2>Flip:</h2>
+        <form id="flipform" onSubmit="return setFlip()">
+            <input id="flipx" type="checkbox" /> Flip X <br/>
+            <input id="flipy" type="checkbox" /> Flip Y <br/>
+            <button id="sendflip">Setzen</button>
+        </form>
+
+        <h2>Filterimage:</h2>
+        <form id="filteform" onSubmit="return setFilter()">
+            <input id="filtername" value="test"></intput><br/>
+            <button id="filterflip">Setzten</button>
+        </form>
+
+        <h2>Filter expression:</h2>
+        <form id="filterexprform" onSubmit="return setFilterExpr()">
+            <input id="filterexpr" value="0.5+0.25*sin(x/3+t)"></intput><br/>
+            <button>Setzten</button>
+        </form>
+    </div>
+    <div  style="border-left: solid 1px; padding-left: 10px; width: 600px;">
+        <h2>Crash Log:</h2>
+        <form id="crashlogform" onSubmit="return enableCrashLog()">
+            <button>start</button>
+        </form>
+        <textarea readonly id='crashlogs' style="width: 500px; height: 300px; display: none;"></textarea>
+
        <h2>Log:</h2>
-        <textarea readonly id='logs' style="width: 500px; height: 500px;"></textarea>
+        <form id="logform" onSubmit="return enableLog()">
+            <button>start</button>
+        </form>
+        <textarea readonly id='logs' style="width: 500px; height: 300px; display: none;"></textarea>
+    </div>
        <script>
            function getRaw(from, callback){
                var xhttp = new XMLHttpRequest();
@ -105,7 +138,8 @@
                let r = document.getElementById('gammar').value;
                let g = document.getElementById('gammag').value;
                let b = document.getElementById('gammab').value;
-                let url = "/setgamma/" + r+"/"+g+"/"+b;
+                let w = document.getElementById('gammaw').value;
+                let url = "/setgamma/" + r+"/"+g+"/"+b+"/"+w;
                getRaw(url, function test(){});
                return false;
            }
@ -117,13 +151,61 @@
                return false;
            }

+            function setFlip(){
+                let x = document.getElementById('flipx').checked;
+                let y = document.getElementById('flipy').checked;
+                console.log(x);
+                console.log(y);
+                getRaw("/filter/flipx/" + x, function test(){});
+                getRaw("/filter/flipy/" + y, function test(){});
+                return false;
+            }
+
+            function setFilter(){
+                let i = document.getElementById('filtername').value;
+                let url = "/filter/img/" + i;
+                getRaw(url, function test(){});
+                return false;
+            }
+
+            
+
+            function setFilterExpr(){
+                let expr = document.getElementById('filterexpr').value;
+                let url = "/filter/expr/";
+                post(url, {"expr": expr});
+                return false;
+            }
+
            function updateLog(){
                getRaw("/apps/log", function(text){
-                    document.getElementById('logs').innerText = text;
+                    document.getElementById('logs').value = text;
                });
            }
-            updateLog();
-            setInterval(updateLog, 1000);
+
+            function updateCrashLog(){
+                getRaw("/apps/crashlog", function(text){
+                    document.getElementById('crashlogs').value = text;
+                });
+            }
+
+            function enableCrashLog(){
+                document.getElementById("crashlogform").style.display = "none";
+                document.getElementById("crashlogs").style.display = "block";
+                
+                updateCrashLog();
+                setInterval(updateCrashLog, 1000);
+                return false;
+            }
+
+            function enableLog(){
+                document.getElementById("logform").style.display = "none";
+                document.getElementById("logs").style.display = "block";
+                updateLog();
+                setInterval(updateLog, 1000);
+                return false;
+            }
+            

            getJSON("/apps/list", populateForm);

--- a/main.py
+++ b/main.py
@ -12,7 +12,10 @@ import time
 import sys
 import logging
 import math
-
+import numpy as np
+import string
+from collections import OrderedDict
+import scipy.misc
 logging.basicConfig(filename='pixelserver.log', level=config.LogLevel)
 running = True

@ -71,6 +74,16 @@ class LogReader(threading.Thread):
        logging.info("LogReader closed")
    def stop(self):
        self.running = False
+    
+class Frame:
+    def __init__(self, buffer, channels=3):
+        self.buffer = buffer
+        self.created = time.time()
+        self.channels = channels
+    def clone(self):
+        f = Frame(self.buffer+0, self.channels)
+        f.created = self.created
+        return f

 ########################################################################
 #                                  GUI                                 #
@ -84,6 +97,7 @@ if config.UseGui:
            self.cv = threading.Condition()
            self.datasource = datasource.addListener(self.cv)
        def run(self):
+            last_frame = time.time()
            logging.info("Starting GUI")
            sf = config.GuiScaleFactor
            screen = pygame.display.set_mode((sf*config.ScreenX, sf*config.ScreenY))
@ -93,14 +107,26 @@ if config.UseGui:
                    pass
                with self.cv:
                    self.cv.wait()
-                    data = self.datasource.getData()
-                screen.fill((0, 255, 0))
-                for x in range(config.ScreenX):
-                    for y in range(config.ScreenY):
-                        i = x+y*config.ScreenX
-                        color = (data[i*3+0], data[i*3+1], data[i*3+2])
-                        pygame.draw.rect(screen, color, pygame.Rect(sf*x, sf*y, sf, sf))
+                    frame = self.datasource.getData()
+                screen.fill((0, 0, 0))
+                if frame.channels == 3:
+                    for x in range(config.ScreenX):
+                        for y in range(config.ScreenY):
+                            color = (frame.buffer[y, x, 0], frame.buffer[y, x, 1], frame.buffer[y, x, 2])
+                            pygame.draw.rect(screen, color, pygame.Rect(sf*x, sf*y, sf, sf))
+                elif frame.channels == 4:
+                    for x in range(config.ScreenX):
+                        for y in range(config.ScreenY):
+                            w = frame.buffer[y, x, 3]//2
+                            color = (frame.buffer[y, x, 0]//2+w, frame.buffer[y, x, 1]//2+w, frame.buffer[y, x, 2]//2+w)
+                            pygame.draw.rect(screen, color, pygame.Rect(sf*x, sf*y, sf, sf))
+                #logging.debug("Time to gui: "+str(time.time()-frame.created))
                pygame.display.flip()
+                if time.time() < last_frame+1/config.GuiFPS:
+                    time.sleep(time.time()-(last_frame+1/config.GuiFPS))
+                    #time.sleep(0.01)
+                last_frame = time.time()
+
            logging.info("Closing GUI")
        def join(self):
            with self.cv:
@ -128,19 +154,26 @@ class SerialWriter(threading.Thread):
                    logging.info("Serial Opened")
                with self.cv:
                    self.cv.wait(timeout = 1/30)
-                    data = self.datasource.getData()
+                    frame = self.datasource.getData()
+                    data = frame.buffer.reshape((config.ScreenX*config.ScreenY*frame.channels,)).astype(np.uint8).tobytes()
                    if self.updateGamma:
-                        buf = bytearray(b"\x00")*3*256
+                        buf = bytearray(b"\x00")*4*256
                        for i in range(256):
                            apply = lambda x, g: max(0, min(255, int(math.pow(x/255, g)*255)))
                            buf[i]     = apply(i, self.r)
                            buf[i+256] = apply(i, self.g)
                            buf[i+512] = apply(i, self.b)
+                            buf[i+512+256] = apply(i, self.w)
                        ser.write(b"\x02")
                        ser.write(buf)
                        self.updateGamma = False
-                ser.write(b"\01")
-                ser.write(data)
+                if frame.channels == 3:
+                    ser.write(b"\01")
+                    ser.write(data)
+                elif frame.channels == 4:
+                    ser.write(b"\03")
+                    ser.write(data)
+                logging.debug("Time to gui: "+str(time.time()-frame.created))
                ser.flush()
            except Exception as e:
                if ser != None:
@ -154,9 +187,9 @@ class SerialWriter(threading.Thread):
        with self.cv:
            self.cv.notify_all()
        super().join()
-    def setGamma(self, r, g, b):
+    def setGamma(self, r, g, b, w):
        with self.cv:
-            self.r, self.g, self.b = r, g, b
+            self.r, self.g, self.b,  self.w = r, g, b, w
            self.updateGamma = True
            self.cv.notify_all()

@ -164,31 +197,37 @@ class SerialWriter(threading.Thread):
 #                                   App                                #
 ########################################################################
 class App(threading.Thread):
-    def __init__(self, cmd, param, listener, is_persistent):
+    def __init__(self, cmd, param, listener, is_persistent, is_white=False, path="."):
        super().__init__()
        #start app
        if type(cmd) != list:
            cmd = [cmd,]
        args = cmd+[str(config.ScreenX), str(config.ScreenY), param]
-        self.app = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
+        self.app = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True, cwd=path)
        self.last_update = time.time()
        self.cv = threading.Condition()
        self.watchdog = WatchDog(lambda: self.isAppTimedOut(), lambda: self.terminateApp())
        self.watchdog.start()
        self.logreader = LogReader(self)
        self.logreader.start()
-        self.datasource = DataSource(b"\x00"*config.ScreenX*config.ScreenY*3)
+        self.datasource = DataSource(Frame(np.zeros((config.ScreenY, config.ScreenX, 3))))
        self.running = True
        self.listener = listener
        self.is_persistent = is_persistent
+        self.is_white = is_white
    def run(self):
        while running and self.running and self.alive():
            oshandle = self.app.stdout.fileno()
            try:
-                data = os.read(oshandle, config.ScreenX*config.ScreenY*3)
-                assert len(data) == config.ScreenX*config.ScreenY*3
+                bytes = 4 if self.is_white else 3
+                data = os.read(oshandle, config.ScreenX*config.ScreenY*bytes)
+                assert len(data) == config.ScreenX*config.ScreenY*bytes
+                buffer = np.frombuffer(data, dtype=np.uint8, count=config.ScreenX*config.ScreenY*bytes)
+                buffer = buffer.reshape((config.ScreenY, config.ScreenX, bytes))
+                
+                frame = Frame(buffer, channels=bytes)
                self.last_update = time.time()
-                self.datasource.pushData(data)
+                self.datasource.pushData(frame)
            except Exception as e:
                logging.debug("Exception in App.run")
        with self.listener:
@ -197,6 +236,8 @@ class App(threading.Thread):
        self.logreader.stop()
        self.watchdog.join()
        self.logreader.join()
+        self.app.wait()
+        logging.debug("App stopped")
    def alive(self):
        return self.app.poll() == None
    def stop(self):
@ -206,6 +247,8 @@ class App(threading.Thread):
        self.app.stderr.close()
        self.watchdog.stop()
        self.logreader.stop()
+        self.app.wait()
+        logging.debug("App stopped")
    def getLog(self):
        return self.logreader.getLog()
    def terminateApp(self):
@ -220,16 +263,17 @@ class App(threading.Thread):
 class AppRunner(threading.Thread):
    def __init__(self):
        super().__init__()
+        self.last_crashlog = ""
        self.currentApp = -1
        self.requestedApp = 0
-        self.intensity = config.DefaultBrightness
        self.app = None
        self.cv = threading.Condition()
        self.param = ""
-        self.datasource = DataSource(b"\x00"*config.ScreenX*config.ScreenY*3)
+        self.datasource = DataSource(Frame(np.zeros((config.ScreenY, config.ScreenX, 3))))
        self.serial = SerialWriter(self.datasource)
        self.serial.start()
        self.persistent_apps = {}
+        self.filters = OrderedDict()
        #start persistent apps
        for app, i in zip(config.Apps, range(len(config.Apps))):
            if app["persistent"]:
@ -245,34 +289,41 @@ class AppRunner(threading.Thread):
        logging.info("Requesting app: "+str(app))
    def startApp(self, i, param=""):
        app = config.Apps[i]
-        newapp = App(app["cmd"], param, self.cv, is_persistent=app["persistent"])
+        newapp = App(app["cmd"], param, self.cv, is_persistent=app["persistent"], is_white=app["white"], path=app["path"])
        newapp.datasource.addListener(self.cv)
        newapp.start()
        if app["persistent"]:
-            self.persistent_apps[self.currentApp] = newapp
+          self.persistent_apps[self.currentApp] = newapp
        return newapp
    def updateApp(self):
-        if self.app != None and not self.app.is_persistent:
+        try:
+          if self.app != None and not self.app.is_persistent:
            self.app.stop()
-        self.currentApp = self.requestedApp
-        if (self.currentApp in self.persistent_apps.keys() 
-            and self.persistent_apps[self.currentApp].alive()):
-            self.app = self.persistent_apps[self.currentApp]
-        else:
+          self.currentApp = self.requestedApp
+          if (self.currentApp in self.persistent_apps.keys() 
+              and self.persistent_apps[self.currentApp].alive()):
+                self.app = self.persistent_apps[self.currentApp]
+          else:
            self.app = self.startApp(self.requestedApp, self.param)
+        except FileNotFoundError as e:
+          print(e)
    def run(self):
        logging.info("Starting Apprunner")
        while running:
            with self.cv:
                if self.app == None or not self.app.alive():
+                    if self.app != None:
+                        self.last_crashlog = self.app.getLog()
                    self.requestedApp = 0   
                if self.requestedApp != None:
                    self.updateApp()
                    self.requestedApp = None
-                data = bytearray(self.app.datasource.getData())
-                for i in range(len(data)):
-                    data[i] = int(data[i]*self.intensity)
-                self.datasource.pushData(data)
+                frame = self.app.datasource.getData().clone()
+                #logging.debug("Runner in time: "+str(time.time()-frame.created))
+                for _, f in self.filters.items():
+                    frame.buffer = f(frame.buffer)
+                #logging.debug("Runner out  time: "+str(time.time()-frame.created))
+                self.datasource.pushData(frame)
                self.cv.wait()
        self.serial.join()
        if config.UseGui:
@ -282,8 +333,77 @@ class AppRunner(threading.Thread):
        if self.app == None:
            return ""
        return self.app.getLog()
-    def setGamma(self, r, g, b):
-        self.serial.setGamma(r, g, b)
+    def setGamma(self, r, g, b, w):
+        self.serial.setGamma(r, g, b, w)
+    def setFilter(self, name, filter):
+        self.filters[name] = filter
+    def removeFilter(self, name):
+        if name in self.filters.keys():
+            del self.filters[name]
+
+########################################################################
+#                           Filter Api                                 #
+########################################################################
+def MakeBrightnessFilter(intensity):
+    def filter(img):
+        return (img*intensity).astype(np.uint8)
+    return filter
+
+def FlipXFilter(intensity):
+    return intensity[:,::-1,:]
+
+def FlipYFilter(intensity):
+    return intensity[::-1,:,:]
+
+def MakeBrightnessImageFilter(name):
+    img = scipy.misc.imread("filter/"+name+".png", flatten=True)/255
+    #img = np.transpose(img)
+    def filter(intensity):
+        intensity = intensity.astype(float)
+        for i in range(intensity.shape[2]):
+            intensity[:,:,i] *= img
+        return intensity.astype(np.uint8)
+    return filter
+
+def strings(str):
+    allowed_chars = string.ascii_letters+string.digits+"+-*/()."
+    i = 0
+    outlist = []
+    while i != len(str):
+        if str[i] not in allowed_chars:
+            raise Exception("Unexpected char "+str[i])
+        if str[i] not in string.ascii_letters:
+            i+=1
+            continue
+        out = ""
+        while i != len(str) and str[i] in string.ascii_letters+string.digits:
+            out += str[i]
+            i+=1
+        outlist.append(out)
+    return outlist
+
+def eval_safer(expr, x, y, t):
+    symbols = {"x": x, "y": y, "t": t, 
+               "sin": np.sin, "cos": np.cos, "exp": np.exp, "tan": np.tan}
+    strs = strings(expr)
+    for s in strs:
+        if s not in symbols.keys():
+            raise Exception("unexpected symbol: "+s)
+    return eval(expr, {}, symbols)
+    
+def MakeBrightnessExprFilter(expr):
+    t0 = time.time()
+    x, y = np.meshgrid(np.arange(config.ScreenX), np.arange(config.ScreenY))
+    eval_safer(expr, 0, 0, 0)
+    def filter(intensity):
+        t = time.time()-t0
+        intensity = intensity.astype(float)
+        filter = 0*x+eval_safer(expr, x, y, t)
+        filter = np.clip(np.nan_to_num(filter), 0, 1)
+        for i in range(intensity.shape[2]):
+            intensity[:,:,i] *= filter
+        return intensity.astype(np.uint8)
+    return filter

 ########################################################################
 #                              Web Api                                 #
@ -336,6 +456,10 @@ def apps_start(name, param):
 def apps_log():
    return runner.getLog()

+@route("/apps/crashlog")
+def apps_log():
+    return runner.last_crashlog
+
@route("/apps/running") 
 def  apps_running():
    return config.Apps[runner.currentApp]["name"]
@ -344,22 +468,56 @@ def  apps_running():
 def index():
    return bottle.static_file("index.html", root='html')

-@route("/setgamma/<r>/<g>/<b>")
-def setGamma(r, g, b):
+@route("/setgamma/<r>/<g>/<b>/<w>")
+def setGamma(r, g, b, w):
    r = float(r)
    g = float(g)
    b = float(b)
-    runner.setGamma(r, g, b)
+    w = float(w)
+    runner.setGamma(r, g, b, w)
    return "ok"

@route("/setbrightness/<i>")
-def setGamma(i):
+def setIntensity(i):
    i = float(i)
    if i < 0 or i > 1:
        return "bad_value"
-    runner.intensity = i
+    runner.setFilter("0_intensity", MakeBrightnessFilter(i))
    return "ok"

+@route("/filter/flipx/<do>")
+def flipx(do):
+    if do == "true":
+        runner.setFilter("1_flipx", FlipXFilter)
+    else:
+        runner.removeFilter("1_flipx")
+    return "ok"
+
+@route("/filter/flipy/<do>")
+def flipy(do):
+    if do == "true":
+        runner.setFilter("1_flipy", FlipYFilter)
+    else:
+        runner.removeFilter("1_flipy")
+    return "ok"
+
+@route("/filter/img/<name>")
+def setfilter(name):
+    if name == "none":
+        runner.removeFilter("3_imgfilter")
+    else:
+        runner.setFilter("3_imgfilter", MakeBrightnessImageFilter(name))
+    return "ok"
+@post("/filter/expr/")
+def filter_expr():
+    expr = request.forms.get('expr')
+    if expr == "" or expr == "none":
+        runner.removeFilter("5_brightnessfunction")
+    else:
+        runner.setFilter("5_brightnessfunction", MakeBrightnessExprFilter(expr))
+    return "ok"
+    
+
 ########################################################################
 #                              Startup                                 #
 ########################################################################
@ -369,15 +527,21 @@ for app in config.Apps:
        app["persistent"] = False
    if "guiname" not in app.keys():
        app["guiname"] = app["name"]
+    if "white" not in app.keys():
+        app["white"] = False
+    if "path" not in app.keys():
+        app["path"] = "."
    cmd = app["cmd"]
    #remove non existing apps
-    if type(cmd) == str and not os.path.isfile(cmd):
-        config.Apps.remove(app)
-        logging.warning("Removed app "+app["name"])
+    #if type(cmd) == str and not os.path.isfile(cmd):
+        #config.Apps.remove(app)
+        #logging.warning("Removed app "+app["name"])
+

 runner = AppRunner()
 runner.start()

+#runner.setFilter("5_crazy", MakeBrightnessExprFilter("0.5+0.25*sin(x/3)/x"))
 run(host=config.WebHost, port=config.WebPort)

 ########################################################################
--- a/setup-apps.sh
+++ b/setup-apps.sh
@ -39,17 +39,17 @@ if hash cargo 2>/dev/null; then
    cp -f external/pixelfoo/target/release/dualmaze apps/
 fi

-echo "Getting mathpixel"
-mkdir -p external
-pushd external
-if [ ! -d "mathpixel" ]; then
-    git clone https://git.chaospott.de/andreas/mathpixel.git
-fi
-pushd mathpixel
-git pull
-bash setup.sh
-popd
-popd
+#echo "Getting mathpixel"
+#mkdir -p external
+#pushd external
+#if [ ! -d "mathpixel" ]; then
+#    git clone https://git.chaospott.de/andreas/mathpixel.git
+#fi
+#pushd mathpixel
+#git pull
+#bash setup.sh
+#popd
+#popd

 echo "Getting pixelthud"
 mkdir -p external