示例#1
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文件: oggflac.py 项目: atis/foobnix
    def _inject(self, fileobj):
        """Write tag data into the FLAC Vorbis comment packet/page."""

        # Ogg FLAC has no convenient data marker like Vorbis, but the
        # second packet - and second page - must be the comment data.
        fileobj.seek(0)
        page = OggPage(fileobj)
        while not page.packets[0].startswith("\x7FFLAC"):
            page = OggPage(fileobj)

        first_page = page
        while not (page.sequence == 1 and page.serial == first_page.serial):
            page = OggPage(fileobj)

        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == first_page.serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        # Set the new comment block.
        data = self.write()
        data = packets[0][0] + struct.pack(">I", len(data))[-3:] + data
        packets[0] = data

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)
示例#2
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文件: oggspeex.py 项目: atis/foobnix
    def _inject(self, fileobj):
        """Write tag data into the Speex comment packet/page."""

        fileobj.seek(0)

        # Find the first header page, with the stream info.
        # Use it to get the serial number.
        page = OggPage(fileobj)
        while not page.packets[0].startswith("Speex   "):
            page = OggPage(fileobj)

        # Look for the next page with that serial number, it'll start
        # the comment packet.
        serial = page.serial
        page = OggPage(fileobj)
        while page.serial != serial:
            page = OggPage(fileobj)

        # Then find all the pages with the comment packet.
        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == old_pages[0].serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        # Set the new comment packet.
        packets[0] = self.write(framing=False)

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)
示例#3
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    def __init__(self, fileobj):
        page = OggPage(fileobj)
        while not page.packets[0].startswith("\x01vorbis"):
            page = OggPage(fileobj)
        if not page.first:
            raise OggVorbisHeaderError(
                "page has ID header, but doesn't start a stream")
        (self.channels, self.sample_rate, max_bitrate, nominal_bitrate,
         min_bitrate) = struct.unpack("<B4i", page.packets[0][11:28])
        self.serial = page.serial

        max_bitrate = max(0, max_bitrate)
        min_bitrate = max(0, min_bitrate)
        nominal_bitrate = max(0, nominal_bitrate)

        if nominal_bitrate == 0:
            self.bitrate = (max_bitrate + min_bitrate) // 2
        elif max_bitrate and max_bitrate < nominal_bitrate:
            # If the max bitrate is less than the nominal, we know
            # the nominal is wrong.
            self.bitrate = max_bitrate
        elif min_bitrate > nominal_bitrate:
            self.bitrate = min_bitrate
        else:
            self.bitrate = nominal_bitrate

        if self.bitrate == 0 and self.length > 0:
            fileobj.seek(0, 2)
            self.bitrate = int((fileobj.tell() * 8) / self.length)
示例#4
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 def __init__(self, fileobj, info):
     pages = []
     complete = False
     while not complete:
         page = OggPage(fileobj)
         if page.serial == info.serial:
             pages.append(page)
             complete = page.complete or (len(page.packets) > 1)
     data = OggPage.to_packets(pages)[0] + "\x01"
     super(OggSpeexVComment, self).__init__(data, framing=False)
示例#5
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 def __init__(self, fileobj, info):
     pages = []
     complete = False
     while not complete:
         page = OggPage(fileobj)
         if page.serial == info.serial:
             pages.append(page)
             complete = page.complete or (len(page.packets) > 1)
     data = OggPage.to_packets(pages)[0][7:]  # Strip off "\x03vorbis".
     super(OggVCommentDict, self).__init__(data)
示例#6
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    def _inject(self, fileobj):
        """Write tag data into the Speex comment packet/page."""

        fileobj.seek(0)

        # Find the first header page, with the stream info.
        # Use it to get the serial number.
        page = OggPage(fileobj)
        while not page.packets[0].startswith("Speex   "):
            page = OggPage(fileobj)

        # Look for the next page with that serial number, it'll start
        # the comment packet.
        serial = page.serial
        page = OggPage(fileobj)
        while page.serial != serial:
            page = OggPage(fileobj)

        # Then find all the pages with the comment packet.
        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == old_pages[0].serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        # Set the new comment packet.
        packets[0] = self.write(framing=False)

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)
示例#7
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 def __init__(self, fileobj):
     page = OggPage(fileobj)
     while not page.packets[0].startswith("Speex   "):
         page = OggPage(fileobj)
     if not page.first:
         raise OggSpeexHeaderError(
             "page has ID header, but doesn't start a stream")
     self.sample_rate = cdata.uint_le(page.packets[0][36:40])
     self.channels = cdata.uint_le(page.packets[0][48:52])
     self.bitrate = max(0, cdata.int_le(page.packets[0][52:56]))
     self.serial = page.serial
示例#8
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 def load(self, data, info, errors='replace'):
     # data should be pointing at the start of an Ogg page, after
     # the first FLAC page.
     pages = []
     complete = False
     while not complete:
         page = OggPage(data)
         if page.serial == info.serial:
             pages.append(page)
             complete = page.complete or (len(page.packets) > 1)
     comment = StringIO(OggPage.to_packets(pages)[0][4:])
     super(OggFLACVComment, self).load(comment, errors=errors)
示例#9
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    def _inject(self, fileobj):
        """Write tag data into the FLAC Vorbis comment packet/page."""

        # Ogg FLAC has no convenient data marker like Vorbis, but the
        # second packet - and second page - must be the comment data.
        fileobj.seek(0)
        page = OggPage(fileobj)
        while not page.packets[0].startswith("\x7FFLAC"):
            page = OggPage(fileobj)

        first_page = page
        while not (page.sequence == 1 and page.serial == first_page.serial):
            page = OggPage(fileobj)

        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == first_page.serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        # Set the new comment block.
        data = self.write()
        data = packets[0][0] + struct.pack(">I", len(data))[-3:] + data
        packets[0] = data

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)
示例#10
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 def __init__(self, fileobj):
     page = OggPage(fileobj)
     while not page.packets[0].startswith("\x80theora"):
         page = OggPage(fileobj)
     if not page.first:
         raise OggTheoraHeaderError(
             "page has ID header, but doesn't start a stream")
     data = page.packets[0]
     vmaj, vmin = struct.unpack("2B", data[7:9])
     if (vmaj, vmin) != (3, 2):
         raise OggTheoraHeaderError("found Theora version %d.%d != 3.2" %
                                    (vmaj, vmin))
     fps_num, fps_den = struct.unpack(">2I", data[22:30])
     self.fps = fps_num / float(fps_den)
     self.bitrate = struct.unpack(">I", data[37:40] + "\x00")[0]
     self.serial = page.serial
示例#11
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    def load(self, data):
        page = OggPage(data)
        while not page.packets[0].startswith("\x7FFLAC"):
            page = OggPage(data)
        major, minor, self.packets, flac = struct.unpack(
            ">BBH4s", page.packets[0][5:13])
        if flac != "fLaC":
            raise OggFLACHeaderError("invalid FLAC marker (%r)" % flac)
        elif (major, minor) != (1, 0):
            raise OggFLACHeaderError("unknown mapping version: %d.%d" %
                                     (major, minor))
        self.serial = page.serial

        # Skip over the block header.
        stringobj = StringIO(page.packets[0][17:])
        super(OggFLACStreamInfo, self).load(StringIO(page.packets[0][17:]))
示例#12
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文件: oggspeex.py 项目: atis/foobnix
 def __init__(self, fileobj, info):
     pages = []
     complete = False
     while not complete:
         page = OggPage(fileobj)
         if page.serial == info.serial:
             pages.append(page)
             complete = page.complete or (len(page.packets) > 1)
     data = OggPage.to_packets(pages)[0] + "\x01"
     super(OggSpeexVComment, self).__init__(data, framing=False)
示例#13
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文件: oggvorbis.py 项目: atis/foobnix
 def __init__(self, fileobj, info):
     pages = []
     complete = False
     while not complete:
         page = OggPage(fileobj)
         if page.serial == info.serial:
             pages.append(page)
             complete = page.complete or (len(page.packets) > 1)
     data = OggPage.to_packets(pages)[0][7:] # Strip off "\x03vorbis".
     super(OggVCommentDict, self).__init__(data)
示例#14
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    def _inject(self, fileobj):
        """Write tag data into the Theora comment packet/page."""

        fileobj.seek(0)
        page = OggPage(fileobj)
        while not page.packets[0].startswith("\x81theora"):
            page = OggPage(fileobj)

        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == old_pages[0].serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        packets[0] = "\x81theora" + self.write(framing=False)

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)
示例#15
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文件: oggflac.py 项目: atis/foobnix
 def load(self, data, info, errors='replace'):
     # data should be pointing at the start of an Ogg page, after
     # the first FLAC page.
     pages = []
     complete = False
     while not complete:
         page = OggPage(data)
         if page.serial == info.serial:
             pages.append(page)
             complete = page.complete or (len(page.packets) > 1)
     comment = StringIO(OggPage.to_packets(pages)[0][4:])
     super(OggFLACVComment, self).load(comment, errors=errors)
示例#16
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文件: oggvorbis.py 项目: atis/foobnix
    def _inject(self, fileobj):
        """Write tag data into the Vorbis comment packet/page."""

        # Find the old pages in the file; we'll need to remove them,
        # plus grab any stray setup packet data out of them.
        fileobj.seek(0)
        page = OggPage(fileobj)
        while not page.packets[0].startswith("\x03vorbis"):
            page = OggPage(fileobj)

        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == old_pages[0].serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        # Set the new comment packet.
        packets[0] = "\x03vorbis" + self.write()

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)
示例#17
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    def _inject(self, fileobj):
        """Write tag data into the Theora comment packet/page."""

        fileobj.seek(0)
        page = OggPage(fileobj)
        while not page.packets[0].startswith("\x81theora"):
            page = OggPage(fileobj)

        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == old_pages[0].serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        packets[0] = "\x81theora" + self.write(framing=False)

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)
示例#18
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    def _inject(self, fileobj):
        """Write tag data into the Vorbis comment packet/page."""

        # Find the old pages in the file; we'll need to remove them,
        # plus grab any stray setup packet data out of them.
        fileobj.seek(0)
        page = OggPage(fileobj)
        while not page.packets[0].startswith("\x03vorbis"):
            page = OggPage(fileobj)

        old_pages = [page]
        while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
            page = OggPage(fileobj)
            if page.serial == old_pages[0].serial:
                old_pages.append(page)

        packets = OggPage.to_packets(old_pages, strict=False)

        # Set the new comment packet.
        packets[0] = "\x03vorbis" + self.write()

        new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
        OggPage.replace(fileobj, old_pages, new_pages)