69 lines
1.6 KiB
Python
69 lines
1.6 KiB
Python
#!/usr/bin/env python
|
|
""" pygame.examples.overlay
|
|
|
|
The overlay module is deprecated now.
|
|
It is an olden days way to draw video quickly.
|
|
"""
|
|
import sys
|
|
import pygame as pg
|
|
from pygame.compat import xrange_
|
|
|
|
SR = (800, 600)
|
|
ovl = None
|
|
|
|
########################################################################
|
|
# Simple video player
|
|
def vPlayer(fName):
|
|
global ovl
|
|
f = open(fName, "rb")
|
|
fmt = f.readline().strip().decode()
|
|
res = f.readline().strip().decode()
|
|
unused_col = f.readline().strip()
|
|
if fmt != "P5":
|
|
print("Unknown format( len %d ). Exiting..." % len(fmt))
|
|
return
|
|
|
|
w, h = [int(x) for x in res.split(" ")]
|
|
h = int((h * 2) / 3)
|
|
# Read into strings
|
|
y = f.read(w * h)
|
|
u = bytes()
|
|
v = bytes()
|
|
for _ in xrange_(0, int(h / 2)):
|
|
u += (f.read(int(w / 2)))
|
|
v += (f.read(int(w / 2)))
|
|
|
|
# Open overlay with the resolution specified
|
|
ovl = pg.Overlay(pg.YV12_OVERLAY, (w, h))
|
|
ovl.set_location(0, 0, w, h)
|
|
|
|
ovl.display((y, u, v))
|
|
while 1:
|
|
pg.time.wait(10)
|
|
for ev in pg.event.get():
|
|
if ev.type in (pg.KEYDOWN, pg.QUIT):
|
|
return
|
|
|
|
|
|
def main(fname):
|
|
"""play video file fname"""
|
|
pg.init()
|
|
try:
|
|
pg.display.set_mode(SR)
|
|
vPlayer(fname)
|
|
finally:
|
|
pg.quit()
|
|
|
|
|
|
# Test all modules
|
|
if __name__ == "__main__":
|
|
if len(sys.argv) != 2:
|
|
print("Example usage: python overlay.py data/yuv_1.pgm")
|
|
else:
|
|
main(sys.argv[1])
|
|
|
|
# Uncomment the code below for a quick test
|
|
# ------------------------------------------
|
|
# if __name__ == "__main__":
|
|
# main('data/yuv_1.pgm')
|