1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
#! /ufs/guido/bin/sgi/python
# Play synchronous video and audio.
# Highly experimental!
import sys
import getopt
import string
import os
import VFile
import aifc
import gl, GL, DEVICE
import al, AL
def usage():
sys.stderr.write( \
'usage: aplay [-o offset] [-q qsize] videofile audiofile\n')
sys.exit(2)
def main():
offset = 0
qsize = 0 # This defaults to 1/10 second of sound
videofile = 'film.video'
audiofile = 'film.aiff'
try:
opts, args = getopt.getopt(sys.argv[1:], 'o:q:')
except getopt.error, msg:
sys.stderr.write(msg + '\n')
usage()
try:
for o, a in opts:
if o == '-o':
offset = string.atoi(a)
if o == '-q':
qsize = string.atoi(a)
except string.atoi_error:
sys.stderr.write(o + ' arg must be integer\n')
usage()
if len(args) > 2:
usage()
if args: videofile = args[0]
if args[1:]: audiofile = args[1]
if not os.path.exists(videofile) and \
os.path.exists(videofile + '.video'):
if not args[1:] and os.path.exists(videofile + '.aiff'):
audiofile = videofile + '.aiff'
videofile = videofile + '.video'
print 'Opening video input file..'
vin = VFile.VinFile(videofile)
print 'Opening audio input file..'
ain = aifc.open(audiofile, 'r')
print 'rate :', ain.getframerate()
print 'channels:', ain.getnchannels()
print 'frames :', ain.getnframes()
print 'width :', ain.getsampwidth()
print 'kbytes :', \
ain.getnframes() * ain.getnchannels() * ain.getsampwidth()
print 'Opening audio output port..'
c = al.newconfig()
c.setchannels(ain.getnchannels())
c.setwidth(ain.getsampwidth())
nullsample = '\0' * ain.getsampwidth()
samples_per_second = ain.getnchannels() * ain.getframerate()
if qsize <= 0: qsize = samples_per_second / 10
qsize = max(qsize, 512)
c.setqueuesize(qsize)
saveparams = [AL.OUTPUT_RATE, 0]
al.getparams(AL.DEFAULT_DEVICE, saveparams)
newparams = [AL.OUTPUT_RATE, ain.getframerate()]
al.setparams(AL.DEFAULT_DEVICE, newparams)
aport = al.openport(audiofile, 'w', c)
print 'Opening video output window..'
gl.foreground()
gl.prefsize(vin.width, vin.height)
wid = gl.winopen(videofile + ' + ' + audiofile)
gl.clear()
vin.initcolormap()
print 'Playing..'
gl.qdevice(DEVICE.ESCKEY)
gl.qdevice(DEVICE.LEFTARROWKEY)
gl.qdevice(DEVICE.RIGHTARROWKEY)
## gl.qdevice(DEVICE.UPARROWKEY)
## gl.qdevice(DEVICE.DOWNARROWKEY)
gl.qdevice(DEVICE.SPACEKEY)
while 1:
samples_written = 0
samples_read = 0
lastt = 0
pause = 0
while 1:
if gl.qtest():
dev, val = gl.qread()
if val == 1:
if dev == DEVICE.ESCKEY:
sys.exit(0)
elif dev == DEVICE.LEFTARROWKEY:
offset = offset - 100
print 'offset =', offset
elif dev == DEVICE.RIGHTARROWKEY:
offset = offset + 100
print 'offset =', offset
elif dev == DEVICE.SPACEKEY:
pause = (not pause)
if pause:
continue
try:
t, data, cdata = vin.getnextframe()
except EOFError:
break
t = int(t)
dt = t - lastt
lastt = t
target = samples_per_second * t / 1000
n = target - samples_written + qsize - offset
if n > 0:
# This call will block until the time is right:
try:
samples = ain.readframes(n)
except EOFError:
samples = ''
k = len(samples) / len(nullsample)
samples_read = samples_read + k
if k < n:
samples = samples + (n-k) * nullsample
aport.writesamps(samples)
samples_written = samples_written + n
vin.showframe(data, cdata)
while 1:
try:
samples = ain.readframes(qsize)
except EOFError:
break
if not samples:
break
aport.writesamps(samples)
k = len(samples) / len(nullsample)
samples_read = samples_read + k
samples_written = samples_written + k
print samples_read, 'samples ==',
print samples_read * 1.0 / samples_per_second, 'sec.'
print lastt, 'milliseconds'
print 'Restarting..'
ain.close()
ain = aifc.open(audiofile, 'r')
vin.rewind()
main()
|
