def retimestamp_and_index_file(inpath, outpath=None, retimestamp=None):
# no retimestamping needed
if retimestamp is None:
return index_file(inpath, outpath)
# retimestamp the input in place and index
elif retimestamp == 'inplace':
from flvlib.scripts.retimestamp_flv import retimestamp_file_inplace
log.debug("Retimestamping file `%s' in place", inpath)
# retimestamp the file inplace
if not retimestamp_file_inplace(inpath):
log.error("Failed to retimestamp `%s' in place", inpath)
return False
return index_file(inpath, outpath)
# retimestamp the input into a temporary file
elif retimestamp == 'atomic':
from flvlib.scripts.retimestamp_flv import retimestamp_file_atomically
log.debug("Retimestamping file `%s' atomically", inpath)
try:
fd, temppath = tempfile.mkstemp()
os.close(fd)
# preserve the permission bits
shutil.copymode(inpath, temppath)
except EnvironmentError, (errno, strerror):
log.error("Failed to create temporary file: %s", strerror)
return False
if not retimestamp_file_atomically(inpath, temppath):
log.error("Failed to retimestamp `%s' atomically", inpath)
# remove the temporary files
force_remove(temppath)
return False
# index the temporary file
if not index_file(temppath, outpath):
force_remove(temppath)
return False
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError, (errno, strerror):
log.error(
"Failed to overwrite the original file with the "
"retimestamped and indexed version: %s", strerror)
return False
def retimestamp_and_index_file(inpath, outpath=None, retimestamp=None):
# no retimestamping needed
if retimestamp is None:
return index_file(inpath, outpath)
# retimestamp the input in place and index
elif retimestamp == 'inplace':
from flvlib.scripts.retimestamp_flv import retimestamp_file_inplace
log.debug("Retimestamping file `%s' in place", inpath)
# retimestamp the file inplace
if not retimestamp_file_inplace(inpath):
log.error("Failed to retimestamp `%s' in place", inpath)
return False
return index_file(inpath, outpath)
# retimestamp the input into a temporary file
elif retimestamp == 'atomic':
from flvlib.scripts.retimestamp_flv import retimestamp_file_atomically
log.debug("Retimestamping file `%s' atomically", inpath)
try:
fd, temppath = tempfile.mkstemp()
os.close(fd)
# preserve the permission bits
shutil.copymode(inpath, temppath)
except EnvironmentError, (errno, strerror):
log.error("Failed to create temporary file: %s", strerror)
return False
if not retimestamp_file_atomically(inpath, temppath):
log.error("Failed to retimestamp `%s' atomically", inpath)
# remove the temporary files
force_remove(temppath)
return False
# index the temporary file
if not index_file(temppath, outpath):
force_remove(temppath)
return False
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError, (errno, strerror):
log.error("Failed to overwrite the original file with the "
"retimestamped and indexed version: %s", strerror)
return False
force_remove(temppath)
return False
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError, (errno, strerror):
log.error("Failed to overwrite the original file with the "
"retimestamped and indexed version: %s", strerror)
return False
else:
# if we were writing directly to the output file we need to remove
# the retimestamped temporary file
force_remove(temppath)
return True
def index_file(inpath, outpath=None):
out_text = (outpath and ("into file `%s'" % outpath)) or "and overwriting"
log.debug("Indexing file `%s' %s", inpath, out_text)
try:
f = open(inpath, 'rb')
except IOError, (errno, strerror):
log.error("Failed to open `%s': %s", inpath, strerror)
return False
flv = IndexingFLV(f)
def index_file(inpath, outpath=None):
out_text = (outpath and ("into file `%s'" % outpath)) or "and overwriting"
log.debug("Indexing file `%s' %s", inpath, out_text)
try:
f = open(inpath, 'rb')
except IOError as e5:
(errno, strerror) = e5.args
log.error("Failed to open `%s': %s", inpath, strerror)
return False
flv = IndexingFLV(f)
tag_iterator = flv.iter_tags()
last_tag = None
try:
while True:
tag = next(tag_iterator)
# some buggy software, like gstreamer's flvmux, puts a metadata tag
# at the end of the file with timestamp 0, and we don't want to
# base our duration computation on that
if tag.timestamp != 0:
last_tag = tag
except MalformedFLV as e:
message = e.args[0] % e.args[1:]
log.error("The file `%s' is not a valid FLV file: %s", inpath, message)
return False
except EndOfFile:
log.error("Unexpected end of file on file `%s'", inpath)
return False
except StopIteration:
pass
if not flv.first_media_tag_offset:
log.error("The file `%s' does not have any media content", inpath)
return False
if not last_tag:
log.error(
"The file `%s' does not have any content with a "
"non-zero timestamp", inpath)
return False
metadata = flv.metadata or {}
if flv.metadata_tag_start:
original_metadata_size = flv.metadata_tag_end - flv.metadata_tag_start
else:
log.debug("The file `%s' has no metadata", inpath)
original_metadata_size = 0
keyframes = flv.keyframes
if flv.no_video:
log.info("The file `%s' has no video, using audio seekpoints info",
inpath)
keyframes = flv.audio_seekpoints
duration = metadata.get('duration')
if not duration:
# A duration of 0 is nonsensical, yet some tools put it like that. In
# that case (or when there is no such field) update the duration value.
duration = last_tag.timestamp / 1000.0
metadata['duration'] = duration
metadata['keyframes'] = keyframes
metadata['metadatacreator'] = 'flvlib %s' % __versionstr__
# we're going to write new metadata, so we need to shift the
# filepositions by the amount of bytes that we're going to add to
# the metadata tag
test_payload, difference = filepositions_difference(
metadata, original_metadata_size)
if difference:
new_filepositions = [
pos + difference for pos in keyframes.filepositions
]
metadata['keyframes'].filepositions = new_filepositions
payload = create_script_tag('onMetaData', metadata)
else:
log.debug("The file `%s' metadata size did not change.", inpath)
payload = test_payload
if outpath:
try:
fo = open(outpath, 'wb')
except IOError as e2:
(errno, strerror) = e2.args
log.error("Failed to open `%s': %s", outpath, strerror)
return False
else:
try:
fd, temppath = tempfile.mkstemp()
# preserve the permission bits
shutil.copymode(inpath, temppath)
fo = os.fdopen(fd, 'wb')
except EnvironmentError as e3:
(errno, strerror) = e3.args
log.error("Failed to create temporary file: %s", strerror)
return False
log.debug("Creating the output file")
try:
fo.write(
create_flv_header(has_audio=flv.has_audio,
has_video=flv.has_video))
fo.write(payload)
f.seek(flv.first_media_tag_offset)
shutil.copyfileobj(f, fo)
except IOError as e6:
(errno, strerror) = e6.args
log.error("Failed to create the indexed file: %s", strerror)
if not outpath:
# remove the temporary file
force_remove(temppath)
return False
f.close()
fo.close()
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError as e4:
(errno, strerror) = e4.args
log.error(
"Failed to overwrite the original file "
"with the indexed version: %s", strerror)
return False
return True
force_remove(outpath)
return False
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError, (errno, strerror):
log.error("Failed to overwrite the original file with the "
"retimestamped and indexed version: %s", strerror)
return False
else:
# if we were writing directly to the output file we need to remove
# the retimestamped temporary file
force_remove(outpath)
return True
def index_file(inpath, outpath=None):
out_text = (outpath and ("into file `%s'" % outpath)) or "and overwriting"
log.debug("Indexing file `%s' %s", inpath, out_text)
try:
f = open(inpath, 'rb')
except IOError, (errno, strerror):
log.error("Failed to open `%s': %s", inpath, strerror)
return False
flv = IndexingFLV(f)
def retimestamp_file_atomically(inpath, outpath):
try:
f = open(inpath, 'rb')
except IOError as e5:
(errno, strerror) = e5.args
log.error("Failed to open `%s': %s", inpath, strerror)
return False
if outpath:
try:
fo = open(outpath, 'w+b')
except IOError as e:
(errno, strerror) = e.args
log.error("Failed to open `%s': %s", outpath, strerror)
return False
else:
try:
fd, temppath = tempfile.mkstemp()
# preserve the permission bits
shutil.copymode(inpath, temppath)
fo = os.fdopen(fd, 'wb')
except EnvironmentError as e1:
(errno, strerror) = e1.args
log.error("Failed to create temporary file: %s", strerror)
return False
try:
shutil.copyfileobj(f, fo)
except EnvironmentError as e6:
(errno, strerror) = e6.args
log.error("Failed to create temporary copy: %s", strerror)
force_remove(temppath)
return False
f.seek(0)
fo.seek(0)
try:
retimestamp_tags_inplace(f, fo)
except IOError as e7:
(errno, strerror) = e7.args
log.error("Failed to create the retimestamped file: %s", strerror)
if not outpath:
force_remove(temppath)
return False
except MalformedFLV as e:
message = e.args[0] % e.args[1:]
log.error("The file `%s' is not a valid FLV file: %s", inpath, message)
if not outpath:
force_remove(temppath)
return False
except EndOfFile:
log.error("Unexpected end of file on file `%s'", inpath)
if not outpath:
force_remove(temppath)
return False
f.close()
fo.close()
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError as e2:
(errno, strerror) = e2.args
log.error(
"Failed to overwrite the original file "
"with the indexed version: %s", strerror)
return False
return True
def index_file(inpath, outpath=None):
out_text = (outpath and ("into file `%s'" % outpath)) or "and overwriting"
log.debug("Indexing file `%s' %s", inpath, out_text)
try:
f = open(inpath, 'rb')
except IOError as e5:
(errno, strerror) = e5.args
log.error("Failed to open `%s': %s", inpath, strerror)
return False
flv = IndexingFLV(f)
tag_iterator = flv.iter_tags()
last_tag = None
try:
while True:
tag = next(tag_iterator)
# some buggy software, like gstreamer's flvmux, puts a metadata tag
# at the end of the file with timestamp 0, and we don't want to
# base our duration computation on that
if tag.timestamp != 0:
last_tag = tag
except MalformedFLV as e:
message = e.args[0] % e.args[1:]
log.error("The file `%s' is not a valid FLV file: %s", inpath, message)
return False
except EndOfFile:
log.error("Unexpected end of file on file `%s'", inpath)
return False
except StopIteration:
pass
if not flv.first_media_tag_offset:
log.error("The file `%s' does not have any media content", inpath)
return False
if not last_tag:
log.error("The file `%s' does not have any content with a "
"non-zero timestamp", inpath)
return False
metadata = flv.metadata or {}
if flv.metadata_tag_start:
original_metadata_size = flv.metadata_tag_end - flv.metadata_tag_start
else:
log.debug("The file `%s' has no metadata", inpath)
original_metadata_size = 0
keyframes = flv.keyframes
if flv.no_video:
log.info("The file `%s' has no video, using audio seekpoints info",
inpath)
keyframes = flv.audio_seekpoints
duration = metadata.get('duration')
if not duration:
# A duration of 0 is nonsensical, yet some tools put it like that. In
# that case (or when there is no such field) update the duration value.
duration = last_tag.timestamp / 1000.0
metadata['duration'] = duration
metadata['keyframes'] = keyframes
metadata['metadatacreator'] = 'flvlib %s' % __versionstr__
# we're going to write new metadata, so we need to shift the
# filepositions by the amount of bytes that we're going to add to
# the metadata tag
test_payload, difference = filepositions_difference(metadata,
original_metadata_size)
if difference:
new_filepositions = [pos + difference
for pos in keyframes.filepositions]
metadata['keyframes'].filepositions = new_filepositions
payload = create_script_tag('onMetaData', metadata)
else:
log.debug("The file `%s' metadata size did not change.", inpath)
payload = test_payload
if outpath:
try:
fo = open(outpath, 'wb')
except IOError as e2:
(errno, strerror) = e2.args
log.error("Failed to open `%s': %s", outpath, strerror)
return False
else:
try:
fd, temppath = tempfile.mkstemp()
# preserve the permission bits
shutil.copymode(inpath, temppath)
fo = os.fdopen(fd, 'wb')
except EnvironmentError as e3:
(errno, strerror) = e3.args
log.error("Failed to create temporary file: %s", strerror)
return False
log.debug("Creating the output file")
try:
fo.write(create_flv_header(has_audio=flv.has_audio,
has_video=flv.has_video))
fo.write(payload)
f.seek(flv.first_media_tag_offset)
shutil.copyfileobj(f, fo)
except IOError as e6:
(errno, strerror) = e6.args
log.error("Failed to create the indexed file: %s", strerror)
if not outpath:
# remove the temporary file
force_remove(temppath)
return False
f.close()
fo.close()
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError as e4:
(errno, strerror) = e4.args
log.error("Failed to overwrite the original file "
"with the indexed version: %s", strerror)
return False
return True
def retimestamp_file_atomically(inpath, outpath):
try:
f = open(inpath, 'rb')
except IOError as e5:
(errno, strerror) = e5.args
log.error("Failed to open `%s': %s", inpath, strerror)
return False
if outpath:
try:
fo = open(outpath, 'w+b')
except IOError as e:
(errno, strerror) = e.args
log.error("Failed to open `%s': %s", outpath, strerror)
return False
else:
try:
fd, temppath = tempfile.mkstemp()
# preserve the permission bits
shutil.copymode(inpath, temppath)
fo = os.fdopen(fd, 'wb')
except EnvironmentError as e1:
(errno, strerror) = e1.args
log.error("Failed to create temporary file: %s", strerror)
return False
try:
shutil.copyfileobj(f, fo)
except EnvironmentError as e6:
(errno, strerror) = e6.args
log.error("Failed to create temporary copy: %s", strerror)
force_remove(temppath)
return False
f.seek(0)
fo.seek(0)
try:
retimestamp_tags_inplace(f, fo)
except IOError as e7:
(errno, strerror) = e7.args
log.error("Failed to create the retimestamped file: %s", strerror)
if not outpath:
force_remove(temppath)
return False
except MalformedFLV as e:
message = e.args[0] % e.args[1:]
log.error("The file `%s' is not a valid FLV file: %s", inpath, message)
if not outpath:
force_remove(temppath)
return False
except EndOfFile:
log.error("Unexpected end of file on file `%s'", inpath)
if not outpath:
force_remove(temppath)
return False
f.close()
fo.close()
if not outpath:
# If we were not writing directly to the output file
# we need to overwrite the original
try:
shutil.move(temppath, inpath)
except EnvironmentError as e2:
(errno, strerror) = e2.args
log.error("Failed to overwrite the original file "
"with the indexed version: %s", strerror)
return False
return True
