def _inject(self, fileobj, padding_func): """Write tag data into the Theora comment packet/page.""" fileobj.seek(0) page = OggPage(fileobj) while not page.packets[0].startswith(b"\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) content_size = get_size(fileobj) - len(packets[0]) # approx vcomment_data = b"\x81theora" + self.write(framing=False) padding_left = len(packets[0]) - len(vcomment_data) info = PaddingInfo(padding_left, content_size) new_padding = info._get_padding(padding_func) packets[0] = vcomment_data + b"\x00" * new_padding new_pages = OggPage._from_packets_try_preserve(packets, old_pages) OggPage.replace(fileobj, old_pages, new_pages)
def _inject(self, fileobj, padding_func): """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(b"\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(framing=False) data = packets[0][:1] + 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, padding_func): """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(b"\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) content_size = get_size(fileobj) - len(packets[0]) # approx vcomment_data = b"\x03vorbis" + self.write() padding_left = len(packets[0]) - len(vcomment_data) info = PaddingInfo(padding_left, content_size) new_padding = info._get_padding(padding_func) # Set the new comment packet. packets[0] = vcomment_data + b"\x00" * new_padding new_pages = OggPage._from_packets_try_preserve(packets, old_pages) OggPage.replace(fileobj, old_pages, new_pages)
def _inject(self, fileobj, padding_func): fileobj.seek(0) info = OggOpusInfo(fileobj) old_pages = self.__get_comment_pages(fileobj, info) packets = OggPage.to_packets(old_pages) vcomment_data = b"OpusTags" + self.write(framing=False) if self._pad_data: # if we have padding data to preserver we can't add more padding # as long as we don't know the structure of what follows packets[0] = vcomment_data + self._pad_data else: content_size = get_size(fileobj) - len(packets[0]) # approx padding_left = len(packets[0]) - len(vcomment_data) info = PaddingInfo(padding_left, content_size) new_padding = info._get_padding(padding_func) packets[0] = vcomment_data + b"\x00" * new_padding new_pages = OggPage._from_packets_try_preserve(packets, old_pages) OggPage.replace(fileobj, old_pages, new_pages)
def _inject(self, fileobj, padding_func): """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(b"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) content_size = get_size(fileobj) - len(packets[0]) # approx vcomment_data = self.write(framing=False) padding_left = len(packets[0]) - len(vcomment_data) info = PaddingInfo(padding_left, content_size) new_padding = info._get_padding(padding_func) # Set the new comment packet. packets[0] = vcomment_data + b"\x00" * new_padding new_pages = OggPage._from_packets_try_preserve(packets, old_pages) OggPage.replace(fileobj, old_pages, new_pages)