Initial revision
diff --git a/Demo/sgi/cd/README b/Demo/sgi/cd/README
new file mode 100644
index 0000000..0789c7a
--- /dev/null
+++ b/Demo/sgi/cd/README
@@ -0,0 +1,23 @@
+These are some programs to work with the SCSI CD-ROM player's audio
+interface (see cdaudio(3) in IRIX 4.0[.2?] or higher). At the moment
+the Python code is not very clean, sorry about that...
+
+cdwin.py A trivial window interface to play a CD over the CD
+ player's audio jack. More functionality is left as an
+ excersice to the reader. Uses module stdwin.
+
+listcd.py List the table-of-contents of a CD (data CDs will
+ appear as a single track).
+
+playcd.py Read audio data from the CD and play it over the
+ Indigo's built-in speker or audio jack. Uses module al.
+
+sendcd.py Read audio data from the CD and send it as UDP packets
+ over the network (to readcd.py).
+
+readcd.py Receive UDP packets containing CD audio data (from
+ sendcd.py) and play them over the Indigo's built-in
+ speaker or audio jack. Uses module al. (Doesn't
+ actually use module cd.)
+
+Note that to read *data* CD-ROMs you must open /dev/rdsk/dks0d4s7...
diff --git a/Demo/sgi/cd/cdwin.py b/Demo/sgi/cd/cdwin.py
new file mode 100755
index 0000000..823866f
--- /dev/null
+++ b/Demo/sgi/cd/cdwin.py
@@ -0,0 +1,93 @@
+import cd
+import stdwin
+from stdwinevents import *
+import mainloop
+
+def main():
+ player = cd.open()
+ stdwin.setdefscrollbars(0, 0)
+ win = stdwin.open('CD')
+ win.player = player
+ win.dispatch = cddispatch
+ mainloop.register(win)
+ win.settimer(10)
+ mainloop.mainloop()
+
+def cddispatch(type, win, detail):
+ if type == WE_NULL:
+ pass
+ elif type == WE_CLOSE:
+ mainloop.unregister(win)
+ win.close()
+ elif type == WE_DRAW:
+ draw(win)
+ elif type == WE_TIMER:
+ update(win)
+ elif type == WE_MOUSE_UP:
+ left, top, right, bottom, v1, v2 = getgeo(win)
+ h, v = detail[0]
+ if left < h < right:
+ if top < v < v1:
+ but1(win)
+ elif v1 < v < v2:
+ but2(win)
+ elif v2 < v < bottom:
+ but3(win)
+ else:
+ stdwin.fleep()
+
+def but1(win):
+ update(win)
+
+def but2(win):
+ win.player.togglepause()
+ update(win)
+
+def but3(win):
+ win.player.stop()
+ update(win)
+
+def update(win):
+ d = win.begindrawing()
+ drawstatus(win, d)
+ d.enddrawing()
+ win.settimer(10)
+
+statedict = ['ERROR', 'NODISK', 'READY', 'PLAYING', 'PAUSED', 'STILL']
+
+def draw(win):
+ left, top, right, bottom, v1, v2 = getgeo(win)
+ d = win.begindrawing()
+ drawstatus(win, d)
+ box(d, left, v1, right, v2, 'Play/Pause')
+ box(d, left, v2, right, bottom, 'Stop')
+ d.enddrawing()
+
+def drawstatus(win, d):
+ left, top, right, bottom, v1, v2 = getgeo(win)
+ status = win.player.getstatus()
+ state = status[0]
+ if 0 <= state < len(statedict):
+ message = statedict[state]
+ else:
+ message = `status`
+ message = message + ' track ' + `status[1]` + ' of ' + `status[12]`
+ d.erase((left, top), (right, v1))
+ box(d, left, top, right, v1, message)
+
+def box(d, left, top, right, bottom, label):
+ R = (left+1, top+1), (right-1, bottom-1)
+ width = d.textwidth(label)
+ height = d.lineheight()
+ h = (left + right - width) / 2
+ v = (top + bottom - height) / 2
+ d.box(R)
+ d.cliprect(R)
+ d.text((h, v), label)
+ d.noclip()
+
+def getgeo(win):
+ (left, top), (right, bottom) = (0, 0), win.getwinsize()
+ v1 = top + (bottom - top) / 3
+ v2 = top + (bottom - top) * 2 / 3
+ return left, top, right, bottom, v1, v2
diff --git a/Demo/sgi/cd/listcd.py b/Demo/sgi/cd/listcd.py
new file mode 100755
index 0000000..299cd98
--- /dev/null
+++ b/Demo/sgi/cd/listcd.py
@@ -0,0 +1,22 @@
+# List track info from CD player.
+
+import cd
+
+def main():
+ c = cd.open()
+ info = []
+ while 1:
+ try:
+ info.append(c.gettrackinfo(len(info) + 1))
+ except RuntimeError:
+ break
+ for i in range(len(info)):
+ start_min, start_sec, start_frame, \
+ total_min, total_sec, total_frame = info[i]
+ print 'Track', z(i+1),
+ print z(start_min) + ':' + z(start_sec) + ':' + z(start_frame),
+ print z(total_min) + ':' + z(total_sec) + ':' + z(total_frame)
+
+def z(n):
+ s = `n`
+ return '0' * (2 - len(s)) + s
diff --git a/Demo/sgi/cd/playcd.py b/Demo/sgi/cd/playcd.py
new file mode 100755
index 0000000..8b24581
--- /dev/null
+++ b/Demo/sgi/cd/playcd.py
@@ -0,0 +1,71 @@
+# Read CD audio data from the SCSI bus and play it back over the
+# built-in speaker or audio jack.
+
+import al
+import AL
+import cd
+import CD
+
+def playaudio(port, type, audio):
+## print 'playaudio'
+ port.writesamps(audio)
+
+callbacks = ['audio', 'pnum', 'index', 'ptime', 'atime', 'catalog', 'ident', 'control']
+
+def callback(port, type, data):
+ print 'type', callbacks[type], 'data', `data`
+
+def main():
+ player = cd.open()
+ parser = cd.createparser()
+
+ state, track, min, sec, frame, abs_min, abs_sec, abs_frame, \
+ total_min, total_sec, total_frame, first, last, scsi_audio, \
+ cur_block, dum1, dum2, dum3 = player.getstatus()
+ print `state, track, min, sec, frame, abs_min, abs_sec, abs_frame, \
+ total_min, total_sec, total_frame, first, last, scsi_audio, \
+ cur_block, dum1, dum2, dum3`
+
+ if state <> CD.READY:
+ player.close()
+ raise 'playcd.Error', 'CD not ready'
+ if not scsi_audio:
+ player.close()
+ raise 'playcd.Error', 'not an audio-capable CD-ROM player'
+
+ for i in range(first, last+1):
+ trackinfo = player.gettrackinfo(i)
+ print `trackinfo`
+
+ size = player.bestreadsize()
+
+ try:
+ oldparams = [AL.OUTPUT_RATE, 0]
+ params = oldparams[:]
+ al.getparams(AL.DEFAULT_DEVICE, oldparams)
+ params[1] = AL.RATE_44100
+ al.setparams(AL.DEFAULT_DEVICE, params)
+ config = al.newconfig()
+ config.setwidth(AL.SAMPLE_16)
+ config.setchannels(AL.STEREO)
+ port = al.openport('CD Player', 'w', config)
+
+ parser.setcallback(CD.AUDIO, playaudio, port)
+ for i in range(1, 8):
+ parser.setcallback(i, callback, port)
+ parser.removecallback(CD.ATIME)
+ parser.removecallback(CD.PTIME)
+
+ while 1:
+ frames = player.readda(size)
+ if frames == '':
+ break
+ parser.parseframe(frames)
+ except KeyboardInterrupt:
+ pass
+
+ al.setparams(AL.DEFAULT_DEVICE, oldparams)
+ player.close()
+ parser.deleteparser()
+
+main()
diff --git a/Demo/sgi/cd/recvcd.py b/Demo/sgi/cd/recvcd.py
new file mode 100755
index 0000000..e991aaa
--- /dev/null
+++ b/Demo/sgi/cd/recvcd.py
@@ -0,0 +1,25 @@
+# Receive UDP packets from sendcd.py and play them on the speaker or
+# audio jack.
+
+import al, AL
+from socket import *
+
+PORT = 50505 # Must match the port in sendcd.py
+
+def main():
+ s = socket(AF_INET, SOCK_DGRAM)
+ s.bind('', PORT)
+
+ c = al.newconfig()
+ c.setchannels(2)
+ c.setwidth(2)
+ p = al.openport('Audio from CD', 'w', c)
+ al.setparams(AL.DEFAULT_DEVICE, [AL.OUTPUT_RATE, AL.RATE_44100])
+
+ N = 2352
+ while 1:
+ data = s.recv(N)
+ if not data:
+ print 'EOF'
+ break
+ p.writesamps(data)
diff --git a/Demo/sgi/cd/sendcd.py b/Demo/sgi/cd/sendcd.py
new file mode 100755
index 0000000..10b0faf
--- /dev/null
+++ b/Demo/sgi/cd/sendcd.py
@@ -0,0 +1,143 @@
+# Read CD audio data from the SCSI CD player and send it as UDP
+# packets to "readcd.py" on another host.
+# Option:
+# "-l" lists track info and quits.
+# "-s" displays status and quits.
+
+import cd
+import sys
+from socket import *
+import getopt
+
+HOST = 'voorn.cwi.nl' # The host where readcd.py is run
+PORT = 50505 # Must match the port in readcd.py
+
+def main():
+ try:
+ optlist, args = getopt.getopt(sys.argv[1:], 'ls')
+ except getopt.error, msg:
+ sys.stderr.write(msg + '\n')
+ sys.exit(2)
+
+ player = cd.open()
+ prstatus(player)
+ size = player.bestreadsize()
+
+ if optlist:
+ for opt, arg in optlist:
+ if opt == '-l':
+ prtrackinfo(player)
+ elif opt == '-s':
+ prstatus(player)
+ return
+
+ sys.stdout.write('waiting for socket... ')
+ sys.stdout.flush()
+ port = socket(AF_INET, SOCK_DGRAM)
+ port.connect(HOST, PORT)
+ print 'socket connected'
+
+ parser = cd.createparser()
+ parser.setcallback(0, audiocallback, port)
+ parser.setcallback(1, pnumcallback, player)
+ parser.setcallback(2, indexcallback, None)
+ ## 3 = ptime: too many calls
+ ## 4 = atime: too many calls
+ parser.setcallback(5, catalogcallback, None)
+ parser.setcallback(6, identcallback, None)
+ parser.setcallback(7, controlcallback, None)
+
+ if len(args) >= 2:
+ if len(args) >= 3:
+ [min, sec, frame] = args[:3]
+ else:
+ [min, sec] = args
+ frame = 0
+ min, sec, frame = eval(min), eval(sec), eval(frame)
+ print 'Seek to', triple(min, sec, frame)
+ dummy = player.seek(min, sec, frame)
+ elif len(args) == 1:
+ track = eval(args[0])
+ print 'Seek to track', track
+ dummy = player.seektrack(track)
+ else:
+ min, sec, frame = player.getstatus()[5:8]
+ print 'Try to seek back to', triple(min, sec, frame)
+ try:
+ player.seek(min, sec, frame)
+ except RuntimeError:
+ print 'Seek failed'
+
+ try:
+ while 1:
+ frames = player.readda(size)
+ if frames == '':
+ print 'END OF CD'
+ break
+ parser.parseframe(frames)
+ except KeyboardInterrupt:
+ print '[Interrupted]'
+ pass
+
+def prtrackinfo(player):
+ info = []
+ while 1:
+ try:
+ info.append(player.gettrackinfo(len(info) + 1))
+ except RuntimeError:
+ break
+ for i in range(len(info)):
+ start_min, start_sec, start_frame, \
+ total_min, total_sec, total_frame = info[i]
+ print 'Track', zfill(i+1), \
+ triple(start_min, start_sec, start_frame), \
+ triple(total_min, total_sec, total_frame)
+
+def audiocallback(port, type, data):
+## sys.stdout.write('#')
+## sys.stdout.flush()
+ port.send(data)
+
+def pnumcallback(player, type, data):
+ print 'pnum =', `data`
+ prstatus(player)
+
+def indexcallback(arg, type, data):
+ print 'index =', `data`
+
+def catalogcallback(arg, type, data):
+ print 'catalog =', `data`
+
+def identcallback(arg, type, data):
+ print 'ident =', `data`
+
+def controlcallback(arg, type, data):
+ print 'control =', `data`
+
+statedict = ['ERROR', 'NODISK', 'READY', 'PLAYING', 'PAUSED', 'STILL']
+
+def prstatus(player):
+ state, track, min, sec, frame, abs_min, abs_sec, abs_frame, \
+ total_min, total_sec, total_frame, first, last, scsi_audio, \
+ cur_block, dum1, dum2, dum3 = player.getstatus()
+ print 'Status:',
+ if 0 <= state < len(statedict):
+ print statedict[state]
+ else:
+ print state
+ print 'Track: ', track
+ print 'Time: ', triple(min, sec, frame)
+ print 'Abs: ', triple(abs_min, abs_sec, abs_frame)
+ print 'Total: ', triple(total_min, total_sec, total_frame)
+ print 'First: ', first
+ print 'Last: ', last
+ print 'SCSI: ', scsi_audio
+ print 'Block: ', cur_block
+ print 'Future:', (dum1, dum2, dum3)
+
+def triple(a, b, c):
+ return zfill(a) + ':' + zfill(b) + ':' + zfill(c)
+
+def zfill(n):
+ s = `n`
+ return '0' * (2 - len(s)) + s