diff options
| -rw-r--r-- | Lib/aifc.py | 1 | ||||
| -rw-r--r-- | Lib/ftplib.py | 14 | ||||
| -rw-r--r-- | Lib/lib-old/whatsound.py | 269 | ||||
| -rw-r--r-- | Lib/toaiff.py | 4 | ||||
| -rw-r--r-- | Lib/whatsound.py | 269 |
5 files changed, 551 insertions, 6 deletions
diff --git a/Lib/aifc.py b/Lib/aifc.py index bad5e43..e45792e 100644 --- a/Lib/aifc.py +++ b/Lib/aifc.py @@ -81,6 +81,7 @@ # rewind() -- rewind to the beginning of the audio stream # setpos(pos) -- seek to the specified position # tell() -- return the current position +# close() -- close the instance (make it unusable) # The position returned by tell(), the position given to setpos() and # the position of marks are all compatible and have nothing to do with # the actual postion in the file. diff --git a/Lib/ftplib.py b/Lib/ftplib.py index cc96a34..c886f82 100644 --- a/Lib/ftplib.py +++ b/Lib/ftplib.py @@ -57,10 +57,6 @@ all_errors = (error_reply, error_temp, error_perm, error_proto, \ CRLF = '\r\n' -# Telnet special characters -DM = chr(242) # Data Mark -IP = chr(244) # Interrupt Process - # Next port to be used by makeport(), with PORT_OFFSET added # (This is now only used when the python interpreter doesn't support # the getsockname() method yet) @@ -327,6 +323,12 @@ class FTP: def cwd(self, dirname): self.voidcmd('CWD ' + dirname) + # Retrieve the size of a file + def size(self, filename): + resp = self.sendcmd('SIZE ' + filename) + if resp[:3] == '213': + return string.atoi(string.strip(resp[3:])) + # Make a directory, return its full pathname def mkd(self, dirname): resp = self.sendcmd('MKD ' + dirname) @@ -340,6 +342,10 @@ class FTP: # Quit, and close the connection def quit(self): self.voidcmd('QUIT') + self.close() + + # Close the connection without assuming anything about it + def close(self): self.file.close() self.sock.close() del self.file, self.sock diff --git a/Lib/lib-old/whatsound.py b/Lib/lib-old/whatsound.py new file mode 100644 index 0000000..a59323b --- /dev/null +++ b/Lib/lib-old/whatsound.py @@ -0,0 +1,269 @@ +# This module contains several routines that help recognizing sound +# files. +# +# Function whathdr() recognizes various types of sound file headers. +# It understands almost all headers that SOX can decode. +# +# The return tuple contains the following items, in this order: +# - file type (as SOX understands it) +# - sampling rate (0 if unknown or hard to decode) +# - number of channels (0 if unknown or hard to decode) +# - number of frames in the file (-1 if unknown or hard to decode) +# - number of bits/sample, or 'U' for U-LAW, or 'A' for A-LAW +# +# If the file doesn't have a recognizable type, it returns None. +# If the file can't be opened, IOError is raised. +# +# To compute the total time, divide the number of frames by the +# sampling rate (a frame contains a sample for each channel). +# +# Function whatraw() calls the "whatsound" program and interprets its +# output. You'll have to guess the sampling rate by listening though! +# +# Function what() calls whathdr() and if it doesn't recognize the file +# then calls whatraw(). +# +# Finally, the function test() is a simple main program that calls +# what() for all files mentioned on the argument list. For directory +# arguments it calls what() for all files in that directory. Default +# argument is "." (testing all files in the current directory). The +# option -r tells it to recurse down directories found inside +# explicitly given directories. +# +# The file structure is top-down except that the test program and its +# subroutine come last. + + +#------------------------------------------------------# +# Guess the type of any sound file, raw or with header # +#------------------------------------------------------# + +def what(filename): + res = whathdr(filename) + if not res: + res = whatraw(filename) + return res + + +#-----------------------------# +# Guess the type of raw sound # +#-----------------------------# + +def whatraw(filename): + # Assume it's always 1 channel, byte-sized samples + # Don't assume anything about the rate + import os + from stat import ST_SIZE + # XXX "whatsound" should be part of the distribution somehow... + cmd = 'whatsound ' + filename + ' 2>/dev/null' + pipe = os.popen(cmd, 'r') + data = pipe.read() + sts = pipe.close() + if sts: + return None + if data[:13] == '-t raw -b -s ': + type = 'sb' + sample_size = 8 + elif data[:13] == '-t raw -b -u ': + type = 'ub' + sample_size = 8 + elif data[:13] == '-t raw -b -U ': + type = 'ul' + sample_size = 'U' + else: + return None + try: + frame_count = os.stat(filename)[ST_SIZE] + except IOError: + frame_count = -1 + return type, 0, 1, frame_count, sample_size + + +#-------------------------# +# Recognize sound headers # +#-------------------------# + +def whathdr(filename): + f = open(filename, 'r') + h = f.read(512) + for tf in tests: + res = tf(h, f) + if res: + return res + return None + + +#-----------------------------------# +# Subroutines per sound header type # +#-----------------------------------# + +tests = [] + +def test_aifc(h, f): + import aifc + if h[:4] <> 'FORM': + return None + if h[8:12] == 'AIFC': + fmt = 'aifc' + elif h[8:12] == 'AIFF': + fmt = 'aiff' + else: + return None + f.seek(0) + try: + a = aifc.openfp(f, 'r') + except (EOFError, aifc.Error): + return None + return (fmt, a.getframerate(), a.getnchannels(), \ + a.getnframes(), 8*a.getsampwidth()) + +tests.append(test_aifc) + + +def test_au(h, f): + if h[:4] == '.snd': + f = get_long_be + elif h[:4] in ('\0ds.', 'dns.'): + f = get_long_le + else: + return None + type = 'au' + hdr_size = f(h[4:8]) + data_size = f(h[8:12]) + encoding = f(h[12:16]) + rate = f(h[16:20]) + nchannels = f(h[20:24]) + sample_size = 1 # default + if encoding == 1: + sample_bits = 'U' + elif encoding == 2: + sample_bits = 8 + elif encoding == 3: + sample_bits = 16 + sample_size = 2 + else: + sample_bits = '?' + frame_size = sample_size * nchannels + return type, rate, nchannels, data_size/frame_size, sample_bits + +tests.append(test_au) + + +def test_hcom(h, f): + if h[65:69] <> 'FSSD' or h[128:132] <> 'HCOM': + return None + divisor = get_long_be(h[128+16:128+20]) + return 'hcom', 22050/divisor, 1, -1, 8 + +tests.append(test_hcom) + + +def test_voc(h, f): + if h[:20] <> 'Creative Voice File\032': + return None + sbseek = get_short_le(h[20:22]) + rate = 0 + if 0 <= sbseek < 500 and h[sbseek] == '\1': + ratecode = ord(h[sbseek+4]) + rate = int(1000000.0 / (256 - ratecode)) + return 'voc', rate, 1, -1, 8 + +tests.append(test_voc) + + +def test_wav(h, f): + # 'RIFF' <len> 'WAVE' 'fmt ' <len> + if h[:4] <> 'RIFF' or h[8:12] <> 'WAVE' or h[12:16] <> 'fmt ': + return None + style = get_short_le(h[20:22]) + nchannels = get_short_le(h[22:24]) + rate = get_long_le(h[24:28]) + sample_bits = get_short_le(h[34:36]) + return 'wav', rate, nchannels, -1, sample_bits + +tests.append(test_wav) + + +def test_8svx(h, f): + if h[:4] <> 'FORM' or h[8:12] <> '8SVX': + return None + # Should decode it to get #channels -- assume always 1 + return '8svx', 0, 1, 0, 8 + +tests.append(test_8svx) + + +def test_sndt(h, f): + if h[:5] == 'SOUND': + nsamples = get_long_le(h[8:12]) + rate = get_short_le(h[20:22]) + return 'sndt', rate, 1, nsamples, 8 + +tests.append(test_sndt) + + +def test_sndr(h, f): + if h[:2] == '\0\0': + rate = get_short_le(h[2:4]) + if 4000 <= rate <= 25000: + return 'sndr', rate, 1, -1, 8 + +tests.append(test_sndr) + + +#---------------------------------------------# +# Subroutines to extract numbers from strings # +#---------------------------------------------# + +def get_long_be(s): + return (ord(s[0])<<24) | (ord(s[1])<<16) | (ord(s[2])<<8) | ord(s[3]) + +def get_long_le(s): + return (ord(s[3])<<24) | (ord(s[2])<<16) | (ord(s[1])<<8) | ord(s[0]) + +def get_short_be(s): + return (ord(s[0])<<8) | ord(s[1]) + +def get_short_le(s): + return (ord(s[1])<<8) | ord(s[0]) + + +#--------------------# +# Small test program # +#--------------------# + +def test(): + import sys + recursive = 0 + if sys.argv[1:] and sys.argv[1] == '-r': + del sys.argv[1:2] + recursive = 1 + try: + if sys.argv[1:]: + testall(sys.argv[1:], recursive, 1) + else: + testall(['.'], recursive, 1) + except KeyboardInterrupt: + sys.stderr.write('\n[Interrupted]\n') + sys.exit(1) + +def testall(list, recursive, toplevel): + import sys + import os + for filename in list: + if os.path.isdir(filename): + print filename + '/:', + if recursive or toplevel: + print 'recursing down:' + import glob + names = glob.glob(os.path.join(filename, '*')) + testall(names, recursive, 0) + else: + print '*** directory (use -r) ***' + else: + print filename + ':', + sys.stdout.flush() + try: + print what(filename) + except IOError: + print '*** not found ***' diff --git a/Lib/toaiff.py b/Lib/toaiff.py index adb2e61..d2f5cd7 100644 --- a/Lib/toaiff.py +++ b/Lib/toaiff.py @@ -9,7 +9,7 @@ import os import tempfile import pipes -import sndhdr +import whatsound table = {} @@ -78,7 +78,7 @@ def _toaiff(filename, temps): else: fname = filename try: - ftype = sndhdr.whathdr(fname) + ftype = whatsound.whathdr(fname) if ftype: ftype = ftype[0] # All we're interested in except IOError: diff --git a/Lib/whatsound.py b/Lib/whatsound.py new file mode 100644 index 0000000..a59323b --- /dev/null +++ b/Lib/whatsound.py @@ -0,0 +1,269 @@ +# This module contains several routines that help recognizing sound +# files. +# +# Function whathdr() recognizes various types of sound file headers. +# It understands almost all headers that SOX can decode. +# +# The return tuple contains the following items, in this order: +# - file type (as SOX understands it) +# - sampling rate (0 if unknown or hard to decode) +# - number of channels (0 if unknown or hard to decode) +# - number of frames in the file (-1 if unknown or hard to decode) +# - number of bits/sample, or 'U' for U-LAW, or 'A' for A-LAW +# +# If the file doesn't have a recognizable type, it returns None. +# If the file can't be opened, IOError is raised. +# +# To compute the total time, divide the number of frames by the +# sampling rate (a frame contains a sample for each channel). +# +# Function whatraw() calls the "whatsound" program and interprets its +# output. You'll have to guess the sampling rate by listening though! +# +# Function what() calls whathdr() and if it doesn't recognize the file +# then calls whatraw(). +# +# Finally, the function test() is a simple main program that calls +# what() for all files mentioned on the argument list. For directory +# arguments it calls what() for all files in that directory. Default +# argument is "." (testing all files in the current directory). The +# option -r tells it to recurse down directories found inside +# explicitly given directories. +# +# The file structure is top-down except that the test program and its +# subroutine come last. + + +#------------------------------------------------------# +# Guess the type of any sound file, raw or with header # +#------------------------------------------------------# + +def what(filename): + res = whathdr(filename) + if not res: + res = whatraw(filename) + return res + + +#-----------------------------# +# Guess the type of raw sound # +#-----------------------------# + +def whatraw(filename): + # Assume it's always 1 channel, byte-sized samples + # Don't assume anything about the rate + import os + from stat import ST_SIZE + # XXX "whatsound" should be part of the distribution somehow... + cmd = 'whatsound ' + filename + ' 2>/dev/null' + pipe = os.popen(cmd, 'r') + data = pipe.read() + sts = pipe.close() + if sts: + return None + if data[:13] == '-t raw -b -s ': + type = 'sb' + sample_size = 8 + elif data[:13] == '-t raw -b -u ': + type = 'ub' + sample_size = 8 + elif data[:13] == '-t raw -b -U ': + type = 'ul' + sample_size = 'U' + else: + return None + try: + frame_count = os.stat(filename)[ST_SIZE] + except IOError: + frame_count = -1 + return type, 0, 1, frame_count, sample_size + + +#-------------------------# +# Recognize sound headers # +#-------------------------# + +def whathdr(filename): + f = open(filename, 'r') + h = f.read(512) + for tf in tests: + res = tf(h, f) + if res: + return res + return None + + +#-----------------------------------# +# Subroutines per sound header type # +#-----------------------------------# + +tests = [] + +def test_aifc(h, f): + import aifc + if h[:4] <> 'FORM': + return None + if h[8:12] == 'AIFC': + fmt = 'aifc' + elif h[8:12] == 'AIFF': + fmt = 'aiff' + else: + return None + f.seek(0) + try: + a = aifc.openfp(f, 'r') + except (EOFError, aifc.Error): + return None + return (fmt, a.getframerate(), a.getnchannels(), \ + a.getnframes(), 8*a.getsampwidth()) + +tests.append(test_aifc) + + +def test_au(h, f): + if h[:4] == '.snd': + f = get_long_be + elif h[:4] in ('\0ds.', 'dns.'): + f = get_long_le + else: + return None + type = 'au' + hdr_size = f(h[4:8]) + data_size = f(h[8:12]) + encoding = f(h[12:16]) + rate = f(h[16:20]) + nchannels = f(h[20:24]) + sample_size = 1 # default + if encoding == 1: + sample_bits = 'U' + elif encoding == 2: + sample_bits = 8 + elif encoding == 3: + sample_bits = 16 + sample_size = 2 + else: + sample_bits = '?' + frame_size = sample_size * nchannels + return type, rate, nchannels, data_size/frame_size, sample_bits + +tests.append(test_au) + + +def test_hcom(h, f): + if h[65:69] <> 'FSSD' or h[128:132] <> 'HCOM': + return None + divisor = get_long_be(h[128+16:128+20]) + return 'hcom', 22050/divisor, 1, -1, 8 + +tests.append(test_hcom) + + +def test_voc(h, f): + if h[:20] <> 'Creative Voice File\032': + return None + sbseek = get_short_le(h[20:22]) + rate = 0 + if 0 <= sbseek < 500 and h[sbseek] == '\1': + ratecode = ord(h[sbseek+4]) + rate = int(1000000.0 / (256 - ratecode)) + return 'voc', rate, 1, -1, 8 + +tests.append(test_voc) + + +def test_wav(h, f): + # 'RIFF' <len> 'WAVE' 'fmt ' <len> + if h[:4] <> 'RIFF' or h[8:12] <> 'WAVE' or h[12:16] <> 'fmt ': + return None + style = get_short_le(h[20:22]) + nchannels = get_short_le(h[22:24]) + rate = get_long_le(h[24:28]) + sample_bits = get_short_le(h[34:36]) + return 'wav', rate, nchannels, -1, sample_bits + +tests.append(test_wav) + + +def test_8svx(h, f): + if h[:4] <> 'FORM' or h[8:12] <> '8SVX': + return None + # Should decode it to get #channels -- assume always 1 + return '8svx', 0, 1, 0, 8 + +tests.append(test_8svx) + + +def test_sndt(h, f): + if h[:5] == 'SOUND': + nsamples = get_long_le(h[8:12]) + rate = get_short_le(h[20:22]) + return 'sndt', rate, 1, nsamples, 8 + +tests.append(test_sndt) + + +def test_sndr(h, f): + if h[:2] == '\0\0': + rate = get_short_le(h[2:4]) + if 4000 <= rate <= 25000: + return 'sndr', rate, 1, -1, 8 + +tests.append(test_sndr) + + +#---------------------------------------------# +# Subroutines to extract numbers from strings # +#---------------------------------------------# + +def get_long_be(s): + return (ord(s[0])<<24) | (ord(s[1])<<16) | (ord(s[2])<<8) | ord(s[3]) + +def get_long_le(s): + return (ord(s[3])<<24) | (ord(s[2])<<16) | (ord(s[1])<<8) | ord(s[0]) + +def get_short_be(s): + return (ord(s[0])<<8) | ord(s[1]) + +def get_short_le(s): + return (ord(s[1])<<8) | ord(s[0]) + + +#--------------------# +# Small test program # +#--------------------# + +def test(): + import sys + recursive = 0 + if sys.argv[1:] and sys.argv[1] == '-r': + del sys.argv[1:2] + recursive = 1 + try: + if sys.argv[1:]: + testall(sys.argv[1:], recursive, 1) + else: + testall(['.'], recursive, 1) + except KeyboardInterrupt: + sys.stderr.write('\n[Interrupted]\n') + sys.exit(1) + +def testall(list, recursive, toplevel): + import sys + import os + for filename in list: + if os.path.isdir(filename): + print filename + '/:', + if recursive or toplevel: + print 'recursing down:' + import glob + names = glob.glob(os.path.join(filename, '*')) + testall(names, recursive, 0) + else: + print '*** directory (use -r) ***' + else: + print filename + ':', + sys.stdout.flush() + try: + print what(filename) + except IOError: + print '*** not found ***' |