Initial revision

Demo/sgi/cd/CD.doc

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+Introduction.
+
+A number of programs have been written which access the Silicon
+Graphics CD-ROM player.  These programs all use the interface defined
+in readcd.py (see readcd.doc for documentation).
+
+Specifying music stretches.
+
+The programs that are capable of reading music CD's all use the same
+syntax to describe which part of the CD is to be read.  The syntax
+closely corresponds to the available methods in readcd.py.
+
+The music to be read is divided into stretches of music.  Each stretch
+must be specified as a separate argument on the command line.  A
+stretch can be a whole CD track, specified as a single number; or it
+can be a start time and a end time.  The start and end times must be
+specified as a tuple, thus: ``(starttime, endtime)''.  Don't forget to
+quote the parenthesis to the shell.  Both starttime and endtime can be
+``None'', a simple number which refers to a CD track, or a tuple
+consisting of either 3 or 4 elements.  A starttime of ``None'' refers
+to the start of the CD, an endtime of ``None'' refers to the end of
+the CD.  A tuple of 3 elements is an absolute time on the CD.  The
+three elements are (minutes, seconds, frames).  A tuple of 4 elements
+is a track-relative time.  The four elements are (track, minutes,
+seconds, frames).
+
+When one stretch ends at the end of a track and the following stretch
+starts at the next track, there is the option of either playing or not
+playing the pause between the two tracks.  When either the end time of
+the first stretch or the start time of the second stretch is specified
+using absolute or track-relative times, the pause will not be played.
+When both times are specified as simple track numbers, the pause will
+be played.
+
+If no stretches are specified, the whole CD will be played.
+
+The programs.
+
+Currently, the following programs exist.
+playcd [ stretch specification ]
+	Play (part of) a CD through the system loadspeaker or
+	headphone set.
+cdaiff [ file [ stretch specification ] ]
+	Copy (part of) a CD to a file.  The file will be written in
+	AIFF format.  If no file is specified, cdaiff will write to
+	the file ``@'' in the current directory.

Lib/irix5/cdplayer.py

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+# This file implements a class which forms an interface to the .cdplayerrc
+# file that is maintained by SGI's cdplayer program.
+#
+# Usage is as follows:
+#
+# import readcd
+# r = readcd.Readcd().init()
+# c = Cdplayer().init(r.gettrackinfo())
+#
+# Now you can use c.artist, c.title and c.track[trackno] (where trackno
+# starts at 1).  When the CD is not recognized, all values will be the empty
+# string.
+# It is also possible to set the above mentioned variables to new values.
+# You can then use c.write() to write out the changed values to the
+# .cdplayerrc file.
+
+cdplayerrc = '.cdplayerrc'
+
+class Cdplayer():
+	def init(self, tracklist):
+		import string
+		self.artist = ''
+		self.title = ''
+		self.track = [None] + [''] * len(tracklist)
+		self.id = 'd' + string.zfill(len(tracklist), 2)
+		for track in tracklist:
+			start, length = track
+			self.id = self.id + string.zfill(length[0], 2) + \
+				  string.zfill(length[1], 2)
+		try:
+			import posix
+			f = open(posix.environ['HOME'] + '/' + cdplayerrc, 'r')
+		except IOError:
+			return self
+		import regex
+		reg = regex.compile('^\\([^:]*\\):\t\\(.*\\)')
+		s = self.id + '.'
+		l = len(s)
+		while 1:
+			line = f.readline()
+			if line == '':
+				break
+			if line[:l] == s:
+				line = line[l:]
+				if reg.match(line) == -1:
+					print 'syntax error in ~/' + cdplayerrc
+					continue
+				name = line[reg.regs[1][0]:reg.regs[1][1]]
+				value = line[reg.regs[2][0]:reg.regs[2][1]]
+				if name == 'title':
+					self.title = value
+				elif name == 'artist':
+					self.artist = value
+				elif name[:5] == 'track':
+					trackno = string.atoi(name[6:])
+					self.track[trackno] = value
+		f.close()
+		return self
+
+	def write(self):
+		import posix
+		filename = posix.environ['HOME'] + '/' + cdplayerrc
+		try:
+			old = open(filename, 'r')
+		except IOError:
+			old = open('/dev/null', 'r')
+		new = open(filename + '.new', 'w')
+		s = self.id + '.'
+		l = len(s)
+		while 1:
+			line = old.readline()
+			if line == '':
+				break
+			if line[:l] <> s:
+				new.write(line)
+		new.write(self.id + '.title:\t' + self.title + '\n')
+		new.write(self.id + '.artist:\t' + self.artist + '\n')
+		for i in range(1, len(self.track)):
+			new.write(self.id + '.track.' + `i` + ':\t' + \
+				  self.track[i] + '\n')
+		old.close()
+		new.close()
+		posix.rename(filename + '.new', filename)

Lib/plat-irix5/cdplayer.py

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+# This file implements a class which forms an interface to the .cdplayerrc
+# file that is maintained by SGI's cdplayer program.
+#
+# Usage is as follows:
+#
+# import readcd
+# r = readcd.Readcd().init()
+# c = Cdplayer().init(r.gettrackinfo())
+#
+# Now you can use c.artist, c.title and c.track[trackno] (where trackno
+# starts at 1).  When the CD is not recognized, all values will be the empty
+# string.
+# It is also possible to set the above mentioned variables to new values.
+# You can then use c.write() to write out the changed values to the
+# .cdplayerrc file.
+
+cdplayerrc = '.cdplayerrc'
+
+class Cdplayer():
+	def init(self, tracklist):
+		import string
+		self.artist = ''
+		self.title = ''
+		self.track = [None] + [''] * len(tracklist)
+		self.id = 'd' + string.zfill(len(tracklist), 2)
+		for track in tracklist:
+			start, length = track
+			self.id = self.id + string.zfill(length[0], 2) + \
+				  string.zfill(length[1], 2)
+		try:
+			import posix
+			f = open(posix.environ['HOME'] + '/' + cdplayerrc, 'r')
+		except IOError:
+			return self
+		import regex
+		reg = regex.compile('^\\([^:]*\\):\t\\(.*\\)')
+		s = self.id + '.'
+		l = len(s)
+		while 1:
+			line = f.readline()
+			if line == '':
+				break
+			if line[:l] == s:
+				line = line[l:]
+				if reg.match(line) == -1:
+					print 'syntax error in ~/' + cdplayerrc
+					continue
+				name = line[reg.regs[1][0]:reg.regs[1][1]]
+				value = line[reg.regs[2][0]:reg.regs[2][1]]
+				if name == 'title':
+					self.title = value
+				elif name == 'artist':
+					self.artist = value
+				elif name[:5] == 'track':
+					trackno = string.atoi(name[6:])
+					self.track[trackno] = value
+		f.close()
+		return self
+
+	def write(self):
+		import posix
+		filename = posix.environ['HOME'] + '/' + cdplayerrc
+		try:
+			old = open(filename, 'r')
+		except IOError:
+			old = open('/dev/null', 'r')
+		new = open(filename + '.new', 'w')
+		s = self.id + '.'
+		l = len(s)
+		while 1:
+			line = old.readline()
+			if line == '':
+				break
+			if line[:l] <> s:
+				new.write(line)
+		new.write(self.id + '.title:\t' + self.title + '\n')
+		new.write(self.id + '.artist:\t' + self.artist + '\n')
+		for i in range(1, len(self.track)):
+			new.write(self.id + '.track.' + `i` + ':\t' + \
+				  self.track[i] + '\n')
+		old.close()
+		new.close()
+		posix.rename(filename + '.new', filename)

Lib/plat-sunos4/SUNAUDIODEV.py

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+# Symbolic constants for use with sunaudiodev module
+# The names are the same as in audioio.h with the leading AUDIO_
+# removed.
+
+# Encoding types, for fields i_encoding and o_encoding
+
+ENCODING_ULAW = 1
+ENCODING_ALAW = 2
+
+# Gain ranges for i_gain, o_gain and monitor_gain
+
+MIN_GAIN = 0
+MAX_GAIN = 255
+
+# Port names for i_port and o_port
+
+PORT_A = 1
+PORT_B = 2
+PORT_C = 3
+PORT_D = 4
+
+SPEAKER = PORT_A
+HEADPHONE = PORT_B
+
+MICROPHONE = PORT_A

Lib/sunos4/SUNAUDIODEV.py

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+# Symbolic constants for use with sunaudiodev module
+# The names are the same as in audioio.h with the leading AUDIO_
+# removed.
+
+# Encoding types, for fields i_encoding and o_encoding
+
+ENCODING_ULAW = 1
+ENCODING_ALAW = 2
+
+# Gain ranges for i_gain, o_gain and monitor_gain
+
+MIN_GAIN = 0
+MAX_GAIN = 255
+
+# Port names for i_port and o_port
+
+PORT_A = 1
+PORT_B = 2
+PORT_C = 3
+PORT_D = 4
+
+SPEAKER = PORT_A
+HEADPHONE = PORT_B
+
+MICROPHONE = PORT_A