def from_pcm(cls,
filename,
pcmreader,
compression=None,
total_pcm_frames=None):
"""encodes a new file from PCM data
takes a filename string, PCMReader object,
optional compression level string and
optional total_pcm_frames integer
encodes a new audio file from pcmreader's data
at the given filename with the specified compression level
and returns a new MP3Audio object"""
from audiotools import (PCMConverter, BufferedPCMReader, ChannelMask,
__default_quality__, EncodingError)
from audiotools.encoders import encode_mp3
if (((compression is None)
or (compression not in cls.COMPRESSION_MODES))):
compression = __default_quality__(cls.NAME)
if pcmreader.bits_per_sample not in {8, 16, 24}:
from audiotools import UnsupportedBitsPerSample
pcmreader.close()
raise UnsupportedBitsPerSample(filename, pcmreader.bits_per_sample)
try:
if total_pcm_frames is not None:
from audiotools import CounterPCMReader
pcmreader = CounterPCMReader(pcmreader)
encode_mp3(
filename,
PCMConverter(pcmreader,
sample_rate=pcmreader.sample_rate,
channels=min(pcmreader.channels, 2),
channel_mask=ChannelMask.from_channels(
min(pcmreader.channels, 2)),
bits_per_sample=16), compression)
if ((total_pcm_frames is not None)
and (total_pcm_frames != pcmreader.frames_written)):
from audiotools.text import ERR_TOTAL_PCM_FRAMES_MISMATCH
cls.__unlink__(filename)
raise EncodingError(ERR_TOTAL_PCM_FRAMES_MISMATCH)
return MP3Audio(filename)
except (ValueError, IOError) as err:
cls.__unlink__(filename)
raise EncodingError(str(err))
finally:
pcmreader.close()
def from_pcm(cls, filename, pcmreader,
compression=None, total_pcm_frames=None):
"""encodes a new file from PCM data
takes a filename string, PCMReader object,
optional compression level string and
optional total_pcm_frames integer
encodes a new audio file from pcmreader's data
at the given filename with the specified compression level
and returns a new MP3Audio object"""
from audiotools import (PCMConverter,
BufferedPCMReader,
ChannelMask,
__default_quality__,
EncodingError)
from audiotools.encoders import encode_mp3
if (((compression is None) or
(compression not in cls.COMPRESSION_MODES))):
compression = __default_quality__(cls.NAME)
if pcmreader.bits_per_sample not in {8, 16, 24}:
from audiotools import UnsupportedBitsPerSample
pcmreader.close()
raise UnsupportedBitsPerSample(filename, pcmreader.bits_per_sample)
try:
if total_pcm_frames is not None:
from audiotools import CounterPCMReader
pcmreader = CounterPCMReader(pcmreader)
encode_mp3(filename,
PCMConverter(pcmreader,
sample_rate=pcmreader.sample_rate,
channels=min(pcmreader.channels, 2),
channel_mask=ChannelMask.from_channels(
min(pcmreader.channels, 2)),
bits_per_sample=16),
compression)
if ((total_pcm_frames is not None) and
(total_pcm_frames != pcmreader.frames_written)):
from audiotools.text import ERR_TOTAL_PCM_FRAMES_MISMATCH
cls.__unlink__(filename)
raise EncodingError(ERR_TOTAL_PCM_FRAMES_MISMATCH)
return MP3Audio(filename)
except (ValueError, IOError) as err:
cls.__unlink__(filename)
raise EncodingError(str(err))
finally:
pcmreader.close()
def from_pcm(cls,
filename,
pcmreader,
compression=None,
total_pcm_frames=None):
"""encodes a new file from PCM data
takes a filename string, PCMReader object,
optional compression level string and
optional total_pcm_frames integer
encodes a new audio file from pcmreader's data
at the given filename with the specified compression level
and returns a new MP3Audio object"""
from audiotools import (PCMConverter, BufferedPCMReader, ChannelMask,
__default_quality__, EncodingError)
from audiotools.encoders import encode_mp3
if (((compression is None)
or (compression not in cls.COMPRESSION_MODES))):
compression = __default_quality__(cls.NAME)
try:
encode_mp3(
filename,
BufferedPCMReader(
PCMConverter(pcmreader,
sample_rate=pcmreader.sample_rate,
channels=min(pcmreader.channels, 2),
channel_mask=ChannelMask.from_channels(
min(pcmreader.channels, 2)),
bits_per_sample=16)), compression)
return MP3Audio(filename)
except (ValueError, IOError), err:
cls.__unlink__(filename)
raise EncodingError(str(err))
def from_pcm(cls, filename, pcmreader,
compression=None, total_pcm_frames=None):
"""encodes a new file from PCM data
takes a filename string, PCMReader object,
optional compression level string and
optional total_pcm_frames integer
encodes a new audio file from pcmreader's data
at the given filename with the specified compression level
and returns a new MP3Audio object"""
from audiotools import (PCMConverter,
BufferedPCMReader,
ChannelMask,
__default_quality__,
EncodingError)
from audiotools.encoders import encode_mp3
if (((compression is None) or
(compression not in cls.COMPRESSION_MODES))):
compression = __default_quality__(cls.NAME)
try:
encode_mp3(filename,
BufferedPCMReader(
PCMConverter(pcmreader,
sample_rate=pcmreader.sample_rate,
channels=min(pcmreader.channels, 2),
channel_mask=ChannelMask.from_channels(
min(pcmreader.channels, 2)),
bits_per_sample=16)),
compression)
return MP3Audio(filename)
except (ValueError, IOError), err:
cls.__unlink__(filename)
raise EncodingError(str(err))