Initiate new release.

[youtubedl] / youtube_dl / downloader / f4m.py

diff --git a/youtube_dl/downloader/f4m.py b/youtube_dl/downloader/f4m.py
index 0e7a1c20075499e58b977da4154ce287b144f958..b1a858c452617ed452bc0dcae8d612d22fd224d3 100644 (file)
--- a/youtube_dl/downloader/f4m.py
+++ b/youtube_dl/downloader/f4m.py
@@ -1,4 +1,4 @@
-from __future__ import unicode_literals
+from __future__ import division, unicode_literals

 
 import base64
 import io
 
 import base64
 import io


@@ -11,11 +11,11 @@ from .common import FileDownloader
 from .http import HttpFD
 from ..compat import (
     compat_urlparse,
 from .http import HttpFD
 from ..compat import (
     compat_urlparse,

+    compat_urllib_error,

 )
 from ..utils import (
     struct_pack,
     struct_unpack,
 )
 from ..utils import (
     struct_pack,
     struct_unpack,

-    format_bytes,

     encodeFilename,
     sanitize_open,
     xpath_text,
     encodeFilename,
     sanitize_open,
     xpath_text,


@@ -122,7 +122,8 @@ class FlvReader(io.BytesIO):
 
         self.read_unsigned_int()  # BootstrapinfoVersion
         # Profile,Live,Update,Reserved
 
         self.read_unsigned_int()  # BootstrapinfoVersion
         # Profile,Live,Update,Reserved

-        self.read(1)
+        flags = self.read_unsigned_char()
+        live = flags & 0x20 != 0

         # time scale
         self.read_unsigned_int()
         # CurrentMediaTime
         # time scale
         self.read_unsigned_int()
         # CurrentMediaTime


@@ -161,6 +162,7 @@ class FlvReader(io.BytesIO):
         return {
             'segments': segments,
             'fragments': fragments,
         return {
             'segments': segments,
             'fragments': fragments,

+            'live': live,

         }
 
     def read_bootstrap_info(self):
         }
 
     def read_bootstrap_info(self):


@@ -183,6 +185,10 @@ def build_fragments_list(boot_info):
     for segment, fragments_count in segment_run_table['segment_run']:
         for _ in range(fragments_count):
             res.append((segment, next(fragments_counter)))
     for segment, fragments_count in segment_run_table['segment_run']:
         for _ in range(fragments_count):
             res.append((segment, next(fragments_counter)))

+
+    if boot_info['live']:
+        res = res[-2:]
+

     return res
 
 
     return res
 
 


@@ -247,22 +253,43 @@ class F4mFD(FileDownloader):
             self.report_error('Unsupported DRM')
         return media
 
             self.report_error('Unsupported DRM')
         return media
 

+    def _get_bootstrap_from_url(self, bootstrap_url):
+        bootstrap = self.ydl.urlopen(bootstrap_url).read()
+        return read_bootstrap_info(bootstrap)
+
+    def _update_live_fragments(self, bootstrap_url, latest_fragment):
+        fragments_list = []
+        retries = 30
+        while (not fragments_list) and (retries > 0):
+            boot_info = self._get_bootstrap_from_url(bootstrap_url)
+            fragments_list = build_fragments_list(boot_info)
+            fragments_list = [f for f in fragments_list if f[1] > latest_fragment]
+            if not fragments_list:
+                # Retry after a while
+                time.sleep(5.0)
+                retries -= 1
+
+        if not fragments_list:
+            self.report_error('Failed to update fragments')
+
+        return fragments_list
+
+    def _parse_bootstrap_node(self, node, base_url):
+        if node.text is None:
+            bootstrap_url = compat_urlparse.urljoin(
+                base_url, node.attrib['url'])
+            boot_info = self._get_bootstrap_from_url(bootstrap_url)
+        else:
+            bootstrap_url = None
+            bootstrap = base64.b64decode(node.text.encode('ascii'))
+            boot_info = read_bootstrap_info(bootstrap)
+        return (boot_info, bootstrap_url)
+

     def real_download(self, filename, info_dict):
         man_url = info_dict['url']
         requested_bitrate = info_dict.get('tbr')
         self.to_screen('[download] Downloading f4m manifest')
         manifest = self.ydl.urlopen(man_url).read()
     def real_download(self, filename, info_dict):
         man_url = info_dict['url']
         requested_bitrate = info_dict.get('tbr')
         self.to_screen('[download] Downloading f4m manifest')
         manifest = self.ydl.urlopen(man_url).read()

-        self.report_destination(filename)
-        http_dl = HttpQuietDownloader(
-            self.ydl,
-            {
-                'continuedl': True,
-                'quiet': True,
-                'noprogress': True,
-                'ratelimit': self.params.get('ratelimit', None),
-                'test': self.params.get('test', False),
-            }
-        )

 
         doc = etree.fromstring(manifest)
         formats = [(int(f.attrib.get('bitrate', -1)), f)
 
         doc = etree.fromstring(manifest)
         formats = [(int(f.attrib.get('bitrate', -1)), f)


@@ -277,18 +304,13 @@ class F4mFD(FileDownloader):
 
         base_url = compat_urlparse.urljoin(man_url, media.attrib['url'])
         bootstrap_node = doc.find(_add_ns('bootstrapInfo'))
 
         base_url = compat_urlparse.urljoin(man_url, media.attrib['url'])
         bootstrap_node = doc.find(_add_ns('bootstrapInfo'))

-        if bootstrap_node.text is None:
-            bootstrap_url = compat_urlparse.urljoin(
-                base_url, bootstrap_node.attrib['url'])
-            bootstrap = self.ydl.urlopen(bootstrap_url).read()
-        else:
-            bootstrap = base64.b64decode(bootstrap_node.text)
+        boot_info, bootstrap_url = self._parse_bootstrap_node(bootstrap_node, base_url)
+        live = boot_info['live']

         metadata_node = media.find(_add_ns('metadata'))
         if metadata_node is not None:
         metadata_node = media.find(_add_ns('metadata'))
         if metadata_node is not None:

-            metadata = base64.b64decode(metadata_node.text)
+            metadata = base64.b64decode(metadata_node.text.encode('ascii'))

         else:
             metadata = None
         else:
             metadata = None

-        boot_info = read_bootstrap_info(bootstrap)

 
         fragments_list = build_fragments_list(boot_info)
         if self.params.get('test', False):
 
         fragments_list = build_fragments_list(boot_info)
         if self.params.get('test', False):


@@ -298,64 +320,114 @@ class F4mFD(FileDownloader):
         # For some akamai manifests we'll need to add a query to the fragment url
         akamai_pv = xpath_text(doc, _add_ns('pv-2.0'))
 
         # For some akamai manifests we'll need to add a query to the fragment url
         akamai_pv = xpath_text(doc, _add_ns('pv-2.0'))
 

+        self.report_destination(filename)
+        http_dl = HttpQuietDownloader(
+            self.ydl,
+            {
+                'continuedl': True,
+                'quiet': True,
+                'noprogress': True,
+                'ratelimit': self.params.get('ratelimit', None),
+                'test': self.params.get('test', False),
+            }
+        )

         tmpfilename = self.temp_name(filename)
         (dest_stream, tmpfilename) = sanitize_open(tmpfilename, 'wb')
         tmpfilename = self.temp_name(filename)
         (dest_stream, tmpfilename) = sanitize_open(tmpfilename, 'wb')

+

         write_flv_header(dest_stream)
         write_flv_header(dest_stream)

-        write_metadata_tag(dest_stream, metadata)
+        if not live:
+            write_metadata_tag(dest_stream, metadata)

 
         # This dict stores the download progress, it's updated by the progress
         # hook
         state = {
 
         # This dict stores the download progress, it's updated by the progress
         # hook
         state = {

+            'status': 'downloading',

             'downloaded_bytes': 0,
             'downloaded_bytes': 0,

-            'frag_counter': 0,
+            'frag_index': 0,
+            'frag_count': total_frags,
+            'filename': filename,
+            'tmpfilename': tmpfilename,

         }
         start = time.time()
 
         }
         start = time.time()
 

-        def frag_progress_hook(status):
-            frag_total_bytes = status.get('total_bytes', 0)
-            estimated_size = (state['downloaded_bytes'] +
-                              (total_frags - state['frag_counter']) * frag_total_bytes)
-            if status['status'] == 'finished':
+        def frag_progress_hook(s):
+            if s['status'] not in ('downloading', 'finished'):
+                return
+
+            frag_total_bytes = s.get('total_bytes', 0)
+            if s['status'] == 'finished':

                 state['downloaded_bytes'] += frag_total_bytes
                 state['downloaded_bytes'] += frag_total_bytes

-                state['frag_counter'] += 1
-                progress = self.calc_percent(state['frag_counter'], total_frags)
-                byte_counter = state['downloaded_bytes']
+                state['frag_index'] += 1
+
+            estimated_size = (
+                (state['downloaded_bytes'] + frag_total_bytes) /
+                (state['frag_index'] + 1) * total_frags)
+            time_now = time.time()
+            state['total_bytes_estimate'] = estimated_size
+            state['elapsed'] = time_now - start
+
+            if s['status'] == 'finished':
+                progress = self.calc_percent(state['frag_index'], total_frags)

             else:
             else:

-                frag_downloaded_bytes = status['downloaded_bytes']
-                byte_counter = state['downloaded_bytes'] + frag_downloaded_bytes
+                frag_downloaded_bytes = s['downloaded_bytes']

                 frag_progress = self.calc_percent(frag_downloaded_bytes,
                                                   frag_total_bytes)
                 frag_progress = self.calc_percent(frag_downloaded_bytes,
                                                   frag_total_bytes)

-                progress = self.calc_percent(state['frag_counter'], total_frags)
+                progress = self.calc_percent(state['frag_index'], total_frags)

                 progress += frag_progress / float(total_frags)
 
                 progress += frag_progress / float(total_frags)
 

-            eta = self.calc_eta(start, time.time(), estimated_size, byte_counter)
-            self.report_progress(progress, format_bytes(estimated_size),
-                                 status.get('speed'), eta)
+                state['eta'] = self.calc_eta(
+                    start, time_now, estimated_size, state['downloaded_bytes'] + frag_downloaded_bytes)
+                state['speed'] = s.get('speed')
+            self._hook_progress(state)
+

         http_dl.add_progress_hook(frag_progress_hook)
 
         frags_filenames = []
         http_dl.add_progress_hook(frag_progress_hook)
 
         frags_filenames = []

-        for (seg_i, frag_i) in fragments_list:
+        while fragments_list:
+            seg_i, frag_i = fragments_list.pop(0)

             name = 'Seg%d-Frag%d' % (seg_i, frag_i)
             url = base_url + name
             if akamai_pv:
                 url += '?' + akamai_pv.strip(';')
             name = 'Seg%d-Frag%d' % (seg_i, frag_i)
             url = base_url + name
             if akamai_pv:
                 url += '?' + akamai_pv.strip(';')

+            if info_dict.get('extra_param_to_segment_url'):
+                url += info_dict.get('extra_param_to_segment_url')

             frag_filename = '%s-%s' % (tmpfilename, name)
             frag_filename = '%s-%s' % (tmpfilename, name)

-            success = http_dl.download(frag_filename, {'url': url})
-            if not success:
-                return False
-            with open(frag_filename, 'rb') as down:
-                down_data = down.read()
-                reader = FlvReader(down_data)
-                while True:
-                    _, box_type, box_data = reader.read_box_info()
-                    if box_type == b'mdat':
-                        dest_stream.write(box_data)
-                        break
-            frags_filenames.append(frag_filename)
+            try:
+                success = http_dl.download(frag_filename, {'url': url})
+                if not success:
+                    return False
+                with open(frag_filename, 'rb') as down:
+                    down_data = down.read()
+                    reader = FlvReader(down_data)
+                    while True:
+                        _, box_type, box_data = reader.read_box_info()
+                        if box_type == b'mdat':
+                            dest_stream.write(box_data)
+                            break
+                if live:
+                    os.remove(frag_filename)
+                else:
+                    frags_filenames.append(frag_filename)
+            except (compat_urllib_error.HTTPError, ) as err:
+                if live and (err.code == 404 or err.code == 410):
+                    # We didn't keep up with the live window. Continue
+                    # with the next available fragment.
+                    msg = 'Fragment %d unavailable' % frag_i
+                    self.report_warning(msg)
+                    fragments_list = []
+                else:
+                    raise
+
+            if not fragments_list and live and bootstrap_url:
+                fragments_list = self._update_live_fragments(bootstrap_url, frag_i)
+                total_frags += len(fragments_list)
+                if fragments_list and (fragments_list[0][1] > frag_i + 1):
+                    msg = 'Missed %d fragments' % (fragments_list[0][1] - (frag_i + 1))
+                    self.report_warning(msg)

 
         dest_stream.close()
 
         dest_stream.close()

-        self.report_finish(format_bytes(state['downloaded_bytes']), time.time() - start)

 
 

+        elapsed = time.time() - start

         self.try_rename(tmpfilename, filename)
         for frag_file in frags_filenames:
             os.remove(frag_file)
         self.try_rename(tmpfilename, filename)
         for frag_file in frags_filenames:
             os.remove(frag_file)


@@ -366,6 +438,7 @@ class F4mFD(FileDownloader):
             'total_bytes': fsize,
             'filename': filename,
             'status': 'finished',
             'total_bytes': fsize,
             'filename': filename,
             'status': 'finished',

+            'elapsed': elapsed,

         })
 
         return True
         })
 
         return True