capture -- live preview

[imago.git] / capture.py

diff --git a/capture.py b/capture.py
index 6aeaf53..dbaef64 100755 (executable)
--- a/capture.py
+++ b/capture.py
@@ -1,6 +1,11 @@
 #!/usr/bin/env python
 
+"""Go image capture"""
+
+import os
 import sys
+import argparse
+import time
 
 import pygame
 from pygame.locals import QUIT, KEYDOWN
@@ -8,21 +13,91 @@ import Image
 
 from camera import Camera
 
+class Screen:
+    def __init__(self, res):
+        pygame.init()
+        pygame.display.set_mode(res)
+        pygame.display.set_caption("Go image capture")
+        self._screen = pygame.display.get_surface()
+
+    def display_picture(self, im):
+        pg_img = pygame.image.frombuffer(im.tostring(), im.size, im.mode)
+        self._screen.blit(pg_img, (0,0))
+        pygame.display.flip()
+
+
+def main():
+    parser = argparse.ArgumentParser(description=__doc__)
+    parser.add_argument('-d', type=int, default=0,
+                        help="video device id")
+    parser.add_argument('-a', type=int, default=0,
+                        help="take picture automaticaly every A seconds")
+    parser.add_argument('-r', type=int, nargs=2, default=[640, 480],
+                        help="set camera resolution")
+    args = parser.parse_args()
+
+    res=(args.r[0], args.r[1])
+
+    cam = Camera(vid=args.d, res=res)
+    screen = Screen(res)
+
+    im_number = 0
 
-pygame.init()
-window = pygame.display.set_mode((640,480))
-pygame.display.set_caption("WebCam Demo")
-screen = pygame.display.get_surface()
+    saving_dir = "./captured/" + time.strftime("%Y-%m-%d %H:%M/")
 
-cam = Camera()
+    if not os.path.isdir(saving_dir):
+        os.makedirs(saving_dir)
+
+    done = False
+    clock = pygame.time.Clock()
+    while not done: #live preview
+        for event in pygame.event.get():
+            if event.type == pygame.QUIT:
+                done = True
+                del cam
+                sys.exit()
+            if event.type == pygame.KEYDOWN:
+                done = True
+
+        im = cam.get_image()
+        screen.display_picture(im)
+        clock.tick(5)
+
+   
+    if args.a > 0:
+        last = 0
+        clock = pygame.time.Clock()
+        done = False
+
+        while not done:
+            for event in pygame.event.get():
+                if event.type == pygame.QUIT:
+                    done = True
+            if time.time() - last > args.a:
+                last = time.time()
+                im = cam.get_image()
+                screen.display_picture(im)
+                im.save(saving_dir + "{0:0>3}.jpg".format(im_number), 'JPEG')
+                im_number += 1
+            clock.tick(15)
+
+    else:
+        while True:
+            event = pygame.event.wait()
+            if event.type == QUIT:
+                break
+            if event.type != KEYDOWN:
+                continue
 
-while True:
-    events = pygame.event.get()
-    for event in events:
-        if event.type == QUIT:
-            sys.exit(0)
-        elif event.type == KEYDOWN:
             im = cam.get_image()
-            pg_img = pygame.image.frombuffer(im.tostring(), im.size, im.mode)
-            screen.blit(pg_img, (0,0))
-            pygame.display.flip()
+            screen.display_picture(im)
+            im.save(saving_dir + "{0:0>3}.jpg".format(im_number), 'JPEG')
+            im_number += 1
+
+    del cam
+    
+if __name__ == '__main__':
+    try:
+        main()
+    finally:
+        pygame.quit()