--- /dev/null
+from __future__ import unicode_literals
+
+import os
+import time
+import struct
+import binascii
+import io
+
+from .fragment import FragmentFD
+from ..compat import compat_urllib_error
+from ..utils import (
+ sanitize_open,
+ encodeFilename,
+)
+
+
+u8 = struct.Struct(b'>B')
+u88 = struct.Struct(b'>Bx')
+u16 = struct.Struct(b'>H')
+u1616 = struct.Struct(b'>Hxx')
+u32 = struct.Struct(b'>I')
+u64 = struct.Struct(b'>Q')
+
+s88 = struct.Struct(b'>bx')
+s16 = struct.Struct(b'>h')
+s1616 = struct.Struct(b'>hxx')
+s32 = struct.Struct(b'>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':
+ smaple_entry_box = box(b'mp4a', sample_entry_payload)
+ else:
+ sample_entry_payload = sample_entry_payload
+ 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'])
+ 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] # avc profile indication
+ avcc_payload += sps[2] # profile compatibility
+ avcc_payload += sps[3] # 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
+ smaple_entry_box = box(b'avc1', sample_entry_payload) # AVC Simple Entry
+ stsd_payload += smaple_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)
+
+ segments_filenames = []
+
+ fragment_retries = self.params.get('fragment_retries', 0)
+ skip_unavailable_fragments = self.params.get('skip_unavailable_fragments', True)
+
+ track_written = False
+ for i, segment in enumerate(segments):
+ segment_url = segment['url']
+ segment_name = 'Frag%d' % i
+ target_filename = '%s-%s' % (ctx['tmpfilename'], segment_name)
+ count = 0
+ while count <= fragment_retries:
+ try:
+ success = ctx['dl'].download(target_filename, {'url': segment_url})
+ if not success:
+ return False
+ down, target_sanitized = sanitize_open(target_filename, 'rb')
+ down_data = down.read()
+ if not track_written:
+ tfhd_data = extract_box_data(down_data, [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
+ ctx['dest_stream'].write(down_data)
+ down.close()
+ segments_filenames.append(target_sanitized)
+ break
+ except compat_urllib_error.HTTPError as err:
+ count += 1
+ if count <= fragment_retries:
+ self.report_retry_fragment(err, segment_name, count, fragment_retries)
+ if count > fragment_retries:
+ if skip_unavailable_fragments:
+ self.report_skip_fragment(segment_name)
+ continue
+ self.report_error('giving up after %s fragment retries' % fragment_retries)
+ return False
+
+ self._finish_frag_download(ctx)
+
+ for segment_file in segments_filenames:
+ os.remove(encodeFilename(segment_file))
+
+ return True
projects / youtube-dl / blobdiff