Python ossaudiodev.open方法代码示例

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def audiodata(item, start=0, end=None):
    """
    Given an item, returns a chunk of audio samples formatted into a string.
    When the fuction is called, if start and end are omitted, the entire
    samples of the recording will be returned.  If only end is omitted,
    samples from the start offset to the end of the recording will be returned.
    
    @param start: start offset
    @type start: integer (number of 16kHz frames)
    @param end: end offset
    @type end: integer (number of 16kHz frames) or None to indicate
    the end of file
    @return: string of sequence of bytes of audio samples
    """
    assert(end is None or end > start)
    headersize = 44
    fnam = os.path.join(PREFIX,item.replace(':',os.path.sep)) + '.wav'
    if end is None:
        data = open(fnam).read()
    else:
        data = open(fnam).read(headersize+end*2)
    return data[headersize+start*2:] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def play(data):
    """
    Play the given audio samples.
    
    @param data: audio samples
    @type data: string of bytes of audio samples
    """
    if not PLAY_ENABLED:
        print >>sys.stderr, "sorry, currently we don't support audio playback on this platform:", sys.platform
        return

    try:
        dsp = ossaudiodev.open('w')
    except IOError, e:
        print >>sys.stderr, "can't acquire the audio device; please activate your audio device."
        print >>sys.stderr, "system error message:", str(e)
        return 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def spkrinfo(self, speaker):
        """
        :return: A dictionary mapping .. something.
        """
        if speaker in self._utterances:
            speaker = self.spkrid(speaker)

        if self._speakerinfo is None:
            self._speakerinfo = {}
            for line in self.open('spkrinfo.txt'):
                if not line.strip() or line[0] == ';': continue
                rec = line.strip().split(None, 9)
                key = "dr%s-%s%s" % (rec[2],rec[1].lower(),rec[0].lower())
                self._speakerinfo[key] = SpeakerInfo(*rec)

        return self._speakerinfo[speaker] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def oss_play(data, rate=44100):
    ''' Send audio array to oss for playback
    '''
    import ossaudiodev
    audio = ossaudiodev.open('/dev/audio','w')
    formats = audio.getfmts()
    if ossaudiodev.AFMT_S16_LE & formats:
        # Use 16 bit if available
        audio.setfmt(ossaudiodev.AFMT_S16_LE)
        data = encode.as_int16(data)
    elif ossaudiodev.AFMT_U8 & formats:
        # Otherwise use 8 bit
        audio.setfmt(ossaudiodev.AFMT_U8)
        data = encode.as_uint8(data)
    audio.speed(rate)
    while len(data):
        audio.write(data[:1024])
        data = data[1024:]
    audio.flush()
    audio.sync()
    audio.close() 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def play(self, utterance, start=0, end=None):
        """
        Play the given audio sample.

        :param utterance: The utterance id of the sample to play
        """
        # Method 1: os audio dev.
        try:
            import ossaudiodev
            try:
                dsp = ossaudiodev.open('w')
                dsp.setfmt(ossaudiodev.AFMT_S16_LE)
                dsp.channels(1)
                dsp.speed(16000)
                dsp.write(self.audiodata(utterance, start, end))
                dsp.close()
            except IOError, e:
                print >>sys.stderr, ("can't acquire the audio device; please "
                                     "activate your audio device.")
                print >>sys.stderr, "system error message:", str(e)
            return 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def spkrinfo(self, speaker):
        """
        :return: A dictionary mapping .. something.
        """
        if speaker in self._utterances:
            speaker = self.spkrid(speaker)

        if self._speakerinfo is None:
            self._speakerinfo = {}
            for line in self.open('spkrinfo.txt'):
                if not line.strip() or line[0] == ';':
                    continue
                rec = line.strip().split(None, 9)
                key = "dr%s-%s%s" % (rec[2], rec[1].lower(), rec[0].lower())
                self._speakerinfo[key] = SpeakerInfo(*rec)

        return self._speakerinfo[speaker] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def _prim(ext, sentences=items, offset=False):
    if isinstance(sentences,str):
        sentences = [sentences]
    for sent in sentences:
        fnam = os.path.sep.join([PREFIX] + sent.split(':')) + ext
        r = []
        for l in open(fnam):
            if not l.strip(): continue
            a = l.split()
            if offset:
                r.append((a[2],int(a[0]),int(a[1])))
            else:
                r.append(a[2])
        yield r 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def transcription_dict(self):
        """
        :return: A dictionary giving the 'standard' transcription for
        each word.
        """
        _transcriptions = {}
        for line in self.open('timitdic.txt'):
            if not line.strip() or line[0] == ';': continue
            m = re.match(r'\s*(\S+)\s+/(.*)/\s*$', line)
            if not m: raise ValueError('Bad line: %r' % line)
            _transcriptions[m.group(1)] = m.group(2).split()
        return _transcriptions 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def phone_times(self, utterances=None):
        """
        offset is represented as a number of 16kHz samples!
        """
        return [(line.split()[2], int(line.split()[0]), int(line.split()[1]))
                for fileid in self._utterance_fileids(utterances, '.phn')
                for line in self.open(fileid) if line.strip()] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def words(self, utterances=None):
        return [line.split()[-1]
                for fileid in self._utterance_fileids(utterances, '.wrd')
                for line in self.open(fileid) if line.strip()] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def word_times(self, utterances=None):
        return [(line.split()[2], int(line.split()[0]), int(line.split()[1]))
                for fileid in self._utterance_fileids(utterances, '.wrd')
                for line in self.open(fileid) if line.strip()] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def sents(self, utterances=None):
        return [[line.split()[-1]
                 for line in self.open(fileid) if line.strip()]
                for fileid in self._utterance_fileids(utterances, '.wrd')] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def sent_times(self, utterances=None):
        return [(line.split(None,2)[-1].strip(),
                 int(line.split()[0]), int(line.split()[1]))
                for fileid in self._utterance_fileids(utterances, '.txt')
                for line in self.open(fileid) if line.strip()] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def audiodata(self, utterance, start=0, end=None):
        assert(end is None or end > start)
        headersize = 44
        if end is None:
            data = self.open(utterance+'.wav').read()
        else:
            data = self.open(utterance+'.wav').read(headersize+end*2)
        return data[headersize+start*2:] 

# 需要导入模块: import ossaudiodev [as 别名]
# 或者: from ossaudiodev import open [as 别名]
def play(self, utterance, start=0, end=None):
        """
        Play the given audio sample.

        :param utterance: The utterance id of the sample to play
        """
        # Method 1: os audio dev.
        try:
            import ossaudiodev
            try:
                dsp = ossaudiodev.open('w')
                dsp.setfmt(ossaudiodev.AFMT_S16_LE)
                dsp.channels(1)
                dsp.speed(16000)
                dsp.write(self.audiodata(utterance, start, end))
                dsp.close()
            except IOError as e:
                print(("can't acquire the audio device; please "
                                     "activate your audio device."), file=sys.stderr)
                print("system error message:", str(e), file=sys.stderr)
            return
        except ImportError:
            pass

        # Method 2: pygame
        try:
            # FIXME: this won't work under python 3
            import pygame.mixer, StringIO
            pygame.mixer.init(16000)
            f = StringIO.StringIO(self.wav(utterance, start, end))
            pygame.mixer.Sound(f).play()
            while pygame.mixer.get_busy():
                time.sleep(0.01)
            return
        except ImportError:
            pass

        # Method 3: complain. :)
        print(("you must install pygame or ossaudiodev "
                             "for audio playback."), file=sys.stderr)