diff options
Diffstat (limited to 'youtube_dl/downloader/ism.py')
| -rw-r--r-- | youtube_dl/downloader/ism.py | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/youtube_dl/downloader/ism.py b/youtube_dl/downloader/ism.py deleted file mode 100644 index 063fcf4..0000000 --- a/youtube_dl/downloader/ism.py +++ /dev/null @@ -1,259 +0,0 @@ -from __future__ import unicode_literals - -import time -import binascii -import io - -from .fragment import FragmentFD -from ..compat import ( - compat_Struct, - compat_urllib_error, -) - - -u8 = compat_Struct('>B') -u88 = compat_Struct('>Bx') -u16 = compat_Struct('>H') -u1616 = compat_Struct('>Hxx') -u32 = compat_Struct('>I') -u64 = compat_Struct('>Q') - -s88 = compat_Struct('>bx') -s16 = compat_Struct('>h') -s1616 = compat_Struct('>hxx') -s32 = compat_Struct('>i') - -unity_matrix = (s32.pack(0x10000) + s32.pack(0) * 3) * 2 + s32.pack(0x40000000) - -TRACK_ENABLED = 0x1 -TRACK_IN_MOVIE = 0x2 -TRACK_IN_PREVIEW = 0x4 - -SELF_CONTAINED = 0x1 - - -def box(box_type, payload): - return u32.pack(8 + len(payload)) + box_type + payload - - -def full_box(box_type, version, flags, payload): - return box(box_type, u8.pack(version) + u32.pack(flags)[1:] + payload) - - -def write_piff_header(stream, params): - track_id = params['track_id'] - fourcc = params['fourcc'] - duration = params['duration'] - timescale = params.get('timescale', 10000000) - language = params.get('language', 'und') - height = params.get('height', 0) - width = params.get('width', 0) - is_audio = width == 0 and height == 0 - creation_time = modification_time = int(time.time()) - - ftyp_payload = b'isml' # major brand - ftyp_payload += u32.pack(1) # minor version - ftyp_payload += b'piff' + b'iso2' # compatible brands - stream.write(box(b'ftyp', ftyp_payload)) # File Type Box - - mvhd_payload = u64.pack(creation_time) - mvhd_payload += u64.pack(modification_time) - mvhd_payload += u32.pack(timescale) - mvhd_payload += u64.pack(duration) - mvhd_payload += s1616.pack(1) # rate - mvhd_payload += s88.pack(1) # volume - mvhd_payload += u16.pack(0) # reserved - mvhd_payload += u32.pack(0) * 2 # reserved - mvhd_payload += unity_matrix - mvhd_payload += u32.pack(0) * 6 # pre defined - mvhd_payload += u32.pack(0xffffffff) # next track id - moov_payload = full_box(b'mvhd', 1, 0, mvhd_payload) # Movie Header Box - - tkhd_payload = u64.pack(creation_time) - tkhd_payload += u64.pack(modification_time) - tkhd_payload += u32.pack(track_id) # track id - tkhd_payload += u32.pack(0) # reserved - tkhd_payload += u64.pack(duration) - tkhd_payload += u32.pack(0) * 2 # reserved - tkhd_payload += s16.pack(0) # layer - tkhd_payload += s16.pack(0) # alternate group - tkhd_payload += s88.pack(1 if is_audio else 0) # volume - tkhd_payload += u16.pack(0) # reserved - tkhd_payload += unity_matrix - tkhd_payload += u1616.pack(width) - tkhd_payload += u1616.pack(height) - trak_payload = full_box(b'tkhd', 1, TRACK_ENABLED | TRACK_IN_MOVIE | TRACK_IN_PREVIEW, tkhd_payload) # Track Header Box - - mdhd_payload = u64.pack(creation_time) - mdhd_payload += u64.pack(modification_time) - mdhd_payload += u32.pack(timescale) - mdhd_payload += u64.pack(duration) - mdhd_payload += u16.pack(((ord(language[0]) - 0x60) << 10) | ((ord(language[1]) - 0x60) << 5) | (ord(language[2]) - 0x60)) - mdhd_payload += u16.pack(0) # pre defined - mdia_payload = full_box(b'mdhd', 1, 0, mdhd_payload) # Media Header Box - - hdlr_payload = u32.pack(0) # pre defined - hdlr_payload += b'soun' if is_audio else b'vide' # handler type - hdlr_payload += u32.pack(0) * 3 # reserved - hdlr_payload += (b'Sound' if is_audio else b'Video') + b'Handler\0' # name - mdia_payload += full_box(b'hdlr', 0, 0, hdlr_payload) # Handler Reference Box - - if is_audio: - smhd_payload = s88.pack(0) # balance - smhd_payload += u16.pack(0) # reserved - media_header_box = full_box(b'smhd', 0, 0, smhd_payload) # Sound Media Header - else: - vmhd_payload = u16.pack(0) # graphics mode - vmhd_payload += u16.pack(0) * 3 # opcolor - media_header_box = full_box(b'vmhd', 0, 1, vmhd_payload) # Video Media Header - minf_payload = media_header_box - - dref_payload = u32.pack(1) # entry count - dref_payload += full_box(b'url ', 0, SELF_CONTAINED, b'') # Data Entry URL Box - dinf_payload = full_box(b'dref', 0, 0, dref_payload) # Data Reference Box - minf_payload += box(b'dinf', dinf_payload) # Data Information Box - - stsd_payload = u32.pack(1) # entry count - - sample_entry_payload = u8.pack(0) * 6 # reserved - sample_entry_payload += u16.pack(1) # data reference index - if is_audio: - sample_entry_payload += u32.pack(0) * 2 # reserved - sample_entry_payload += u16.pack(params.get('channels', 2)) - sample_entry_payload += u16.pack(params.get('bits_per_sample', 16)) - sample_entry_payload += u16.pack(0) # pre defined - sample_entry_payload += u16.pack(0) # reserved - sample_entry_payload += u1616.pack(params['sampling_rate']) - - if fourcc == 'AACL': - sample_entry_box = box(b'mp4a', sample_entry_payload) - else: - sample_entry_payload += u16.pack(0) # pre defined - sample_entry_payload += u16.pack(0) # reserved - sample_entry_payload += u32.pack(0) * 3 # pre defined - sample_entry_payload += u16.pack(width) - sample_entry_payload += u16.pack(height) - sample_entry_payload += u1616.pack(0x48) # horiz resolution 72 dpi - sample_entry_payload += u1616.pack(0x48) # vert resolution 72 dpi - sample_entry_payload += u32.pack(0) # reserved - sample_entry_payload += u16.pack(1) # frame count - sample_entry_payload += u8.pack(0) * 32 # compressor name - sample_entry_payload += u16.pack(0x18) # depth - sample_entry_payload += s16.pack(-1) # pre defined - - codec_private_data = binascii.unhexlify(params['codec_private_data'].encode('utf-8')) - if fourcc in ('H264', 'AVC1'): - sps, pps = codec_private_data.split(u32.pack(1))[1:] - avcc_payload = u8.pack(1) # configuration version - avcc_payload += sps[1:4] # avc profile indication + profile compatibility + avc level indication - avcc_payload += u8.pack(0xfc | (params.get('nal_unit_length_field', 4) - 1)) # complete represenation (1) + reserved (11111) + length size minus one - avcc_payload += u8.pack(1) # reserved (0) + number of sps (0000001) - avcc_payload += u16.pack(len(sps)) - avcc_payload += sps - avcc_payload += u8.pack(1) # number of pps - avcc_payload += u16.pack(len(pps)) - avcc_payload += pps - sample_entry_payload += box(b'avcC', avcc_payload) # AVC Decoder Configuration Record - sample_entry_box = box(b'avc1', sample_entry_payload) # AVC Simple Entry - stsd_payload += sample_entry_box - - stbl_payload = full_box(b'stsd', 0, 0, stsd_payload) # Sample Description Box - - stts_payload = u32.pack(0) # entry count - stbl_payload += full_box(b'stts', 0, 0, stts_payload) # Decoding Time to Sample Box - - stsc_payload = u32.pack(0) # entry count - stbl_payload += full_box(b'stsc', 0, 0, stsc_payload) # Sample To Chunk Box - - stco_payload = u32.pack(0) # entry count - stbl_payload += full_box(b'stco', 0, 0, stco_payload) # Chunk Offset Box - - minf_payload += box(b'stbl', stbl_payload) # Sample Table Box - - mdia_payload += box(b'minf', minf_payload) # Media Information Box - - trak_payload += box(b'mdia', mdia_payload) # Media Box - - moov_payload += box(b'trak', trak_payload) # Track Box - - mehd_payload = u64.pack(duration) - mvex_payload = full_box(b'mehd', 1, 0, mehd_payload) # Movie Extends Header Box - - trex_payload = u32.pack(track_id) # track id - trex_payload += u32.pack(1) # default sample description index - trex_payload += u32.pack(0) # default sample duration - trex_payload += u32.pack(0) # default sample size - trex_payload += u32.pack(0) # default sample flags - mvex_payload += full_box(b'trex', 0, 0, trex_payload) # Track Extends Box - - moov_payload += box(b'mvex', mvex_payload) # Movie Extends Box - stream.write(box(b'moov', moov_payload)) # Movie Box - - -def extract_box_data(data, box_sequence): - data_reader = io.BytesIO(data) - while True: - box_size = u32.unpack(data_reader.read(4))[0] - box_type = data_reader.read(4) - if box_type == box_sequence[0]: - box_data = data_reader.read(box_size - 8) - if len(box_sequence) == 1: - return box_data - return extract_box_data(box_data, box_sequence[1:]) - data_reader.seek(box_size - 8, 1) - - -class IsmFD(FragmentFD): - """ - Download segments in a ISM manifest - """ - - FD_NAME = 'ism' - - def real_download(self, filename, info_dict): - segments = info_dict['fragments'][:1] if self.params.get( - 'test', False) else info_dict['fragments'] - - ctx = { - 'filename': filename, - 'total_frags': len(segments), - } - - self._prepare_and_start_frag_download(ctx) - - fragment_retries = self.params.get('fragment_retries', 0) - skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True) - - track_written = False - frag_index = 0 - for i, segment in enumerate(segments): - frag_index += 1 - if frag_index <= ctx['fragment_index']: - continue - count = 0 - while count <= fragment_retries: - try: - success, frag_content = self._download_fragment(ctx, segment['url'], info_dict) - if not success: - return False - if not track_written: - tfhd_data = extract_box_data(frag_content, [b'moof', b'traf', b'tfhd']) - info_dict['_download_params']['track_id'] = u32.unpack(tfhd_data[4:8])[0] - write_piff_header(ctx['dest_stream'], info_dict['_download_params']) - track_written = True - self._append_fragment(ctx, frag_content) - break - except compat_urllib_error.HTTPError as err: - count += 1 - if count <= fragment_retries: - self.report_retry_fragment(err, frag_index, count, fragment_retries) - if count > fragment_retries: - if skip_unavailable_fragments: - self.report_skip_fragment(frag_index) - continue - self.report_error('giving up after %s fragment retries' % fragment_retries) - return False - - self._finish_frag_download(ctx) - - return True |