| Guido van Rossum | 349f2b5 | 1992-12-24 11:41:14 +0000 | [diff] [blame^] | 1 | # Copy a video file, interactively, frame-by-frame. |
| 2 | |
| 3 | import sys |
| 4 | import getopt |
| 5 | from gl import * |
| 6 | from DEVICE import * |
| 7 | import VFile |
| 8 | import string |
| 9 | import imageop |
| 10 | |
| 11 | def report(time, iframe): |
| 12 | print 'Frame', iframe, ': t =', time |
| 13 | |
| 14 | def usage(): |
| 15 | sys.stderr.write('usage: Vcopy [-t type] [-m treshold] [-a] infile outfile\n') |
| 16 | sys.stderr.write('-t Convert to other type\n') |
| 17 | sys.stderr.write('-a Automatic\n') |
| 18 | sys.stderr.write('-m Convert grey to mono with treshold\n') |
| 19 | sys.stderr.write('-d Convert grey to mono with dithering\n') |
| 20 | sys.exit(2) |
| 21 | |
| 22 | def help(): |
| 23 | print 'Command summary:' |
| 24 | print 'n get next image from input' |
| 25 | print 'w write current image to output' |
| 26 | |
| 27 | def main(): |
| 28 | foreground() |
| 29 | opts, args = getopt.getopt(sys.argv[1:], 't:am:d') |
| 30 | if len(args) <> 2: |
| 31 | usage() |
| 32 | [ifile, ofile] = args |
| 33 | print 'open film ', ifile |
| 34 | ifilm = VFile.VinFile().init(ifile) |
| 35 | print 'open output ', ofile |
| 36 | ofilm = VFile.VoutFile().init(ofile) |
| 37 | |
| 38 | ofilm.setinfo(ifilm.getinfo()) |
| 39 | |
| 40 | use_grabber = 0 |
| 41 | continuous = 0 |
| 42 | tomono = 0 |
| 43 | tomonodither = 0 |
| 44 | for o, a in opts: |
| 45 | if o == '-t': |
| 46 | ofilm.format = a |
| 47 | use_grabber = 1 |
| 48 | if o == '-a': |
| 49 | continuous = 1 |
| 50 | if o == '-m': |
| 51 | if ifilm.format <> 'grey': |
| 52 | print '-m only supported for greyscale' |
| 53 | sys.exit(1) |
| 54 | tomono = 1 |
| 55 | treshold = string.atoi(a) |
| 56 | ofilm.format = 'mono' |
| 57 | if o == '-d': |
| 58 | if ifilm.format <> 'grey': |
| 59 | print '-m only supported for greyscale' |
| 60 | sys.exit(1) |
| 61 | tomonodither = 1 |
| 62 | ofilm.format = 'mono' |
| 63 | |
| 64 | ofilm.writeheader() |
| 65 | # |
| 66 | prefsize(ifilm.width, ifilm.height) |
| 67 | w = winopen(ifile) |
| 68 | qdevice(KEYBD) |
| 69 | qdevice(ESCKEY) |
| 70 | qdevice(WINQUIT) |
| 71 | qdevice(WINSHUT) |
| 72 | print 'qdevice calls done' |
| 73 | # |
| 74 | help() |
| 75 | # |
| 76 | time, data, cdata = ifilm.getnextframe() |
| 77 | ifilm.showframe(data, cdata) |
| 78 | iframe = 1 |
| 79 | report(time, iframe) |
| 80 | # |
| 81 | while 1: |
| 82 | if continuous: |
| 83 | dev = KEYBD |
| 84 | else: |
| 85 | dev, val = qread() |
| 86 | if dev in (ESCKEY, WINQUIT, WINSHUT): |
| 87 | break |
| 88 | if dev == REDRAW: |
| 89 | reshapeviewport() |
| 90 | elif dev == KEYBD: |
| 91 | if continuous: |
| 92 | c = '0' |
| 93 | else: |
| 94 | c = chr(val) |
| 95 | #XXX Debug |
| 96 | if c == 'R': |
| 97 | c3i(255,0,0) |
| 98 | clear() |
| 99 | if c == 'G': |
| 100 | c3i(0,255,0) |
| 101 | clear() |
| 102 | if c == 'B': |
| 103 | c3i(0,0,255) |
| 104 | clear() |
| 105 | if c == 'w' or continuous: |
| 106 | if use_grabber: |
| 107 | data, cdata = ofilm.grabframe() |
| 108 | if tomono: |
| 109 | data = imageop.grey2mono(data, \ |
| 110 | ifilm.width, ifilm.height, \ |
| 111 | treshold) |
| 112 | if tomonodither: |
| 113 | data = imageop.dither2mono(data, \ |
| 114 | ifilm.width, ifilm.height) |
| 115 | ofilm.writeframe(time, data, cdata) |
| 116 | print 'Frame', iframe, 'written.' |
| 117 | if c == 'n' or continuous: |
| 118 | try: |
| 119 | time,data,cdata = ifilm.getnextframe() |
| 120 | ifilm.showframe(data, cdata) |
| 121 | iframe = iframe+1 |
| 122 | report(time, iframe) |
| 123 | except EOFError: |
| 124 | print 'EOF' |
| 125 | if continuous: |
| 126 | break |
| 127 | ringbell() |
| 128 | elif dev == INPUTCHANGE: |
| 129 | pass |
| 130 | else: |
| 131 | print '(dev, val) =', (dev, val) |
| 132 | ofilm.close() |
| 133 | |
| 134 | main() |