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)
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)
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)
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)