def process_batch_job(batch_job_file):
""" Processes a batch job description dictionary
@param batch_job_file: a fullpath to a batch job file
@type batch_job_file: string
@return: 1 if the process was successful, 0 if not
@rtype; int
"""
from invenio.legacy.bibdocfile.cli import cli_fix_marc
def upload_marcxml_file(marcxml):
""" Creates a temporary marcxml file and sends it to bibupload
"""
xml_filename = 'bibencode_'+ str(batch_job['recid']) + '_' + str(uuid.uuid4()) + '.xml'
xml_filename = os.path.join(invenio.config.CFG_TMPSHAREDDIR, xml_filename)
xml_file = file(xml_filename, 'w')
xml_file.write(marcxml)
xml_file.close()
targs = ['-c', xml_filename]
task_low_level_submission('bibupload', 'bibencode', *targs)
#---------#
# GENERAL #
#---------#
_task_write_message("----------- Handling Master -----------")
## Check the validity of the batch file here
batch_job = json_decode_file(batch_job_file)
## Sanitise batch description and raise errrors
batch_job = sanitise_batch_job(batch_job)
## Check if the record exists
# if record_exists(batch_job['recid']) < 1:
# raise Exception("Record not found")
recdoc = BibRecDocs(batch_job['recid'])
#--------------------#
# UPDATE FROM MASTER #
#--------------------#
## We want to add new stuff to the video's record, using the master as input
if getval(batch_job, 'update_from_master'):
found_master = False
bibdocs = recdoc.list_bibdocs()
for bibdoc in bibdocs:
bibdocfiles = bibdoc.list_all_files()
for bibdocfile in bibdocfiles:
comment = bibdocfile.get_comment()
description = bibdocfile.get_description()
subformat = bibdocfile.get_subformat()
m_comment = getval(batch_job, 'bibdoc_master_comment', comment)
m_description = getval(batch_job, 'bibdoc_master_description', description)
m_subformat = getval(batch_job, 'bibdoc_master_subformat', subformat)
if (comment == m_comment and
description == m_description and
subformat == m_subformat):
found_master = True
batch_job['input'] = bibdocfile.get_full_path()
## Get the aspect of the from the record
try:
## Assumes pbcore metadata mapping
batch_job['aspect'] = get_fieldvalues(124, CFG_BIBENCODE_ASPECT_RATIO_MARC_FIELD)[0]
except IndexError:
pass
break
if found_master:
break
if not found_master:
_task_write_message("Video master for record %d not found"
% batch_job['recid'])
task_update_progress("Video master for record %d not found"
% batch_job['recid'])
## Maybe send an email?
return 1
## Clean the job to do no upscaling etc
if getval(batch_job, 'assure_quality'):
batch_job = clean_job_for_quality(batch_job)
global _BATCH_STEPS
_BATCH_STEPS = len(batch_job['jobs'])
## Generate the docname from the input filename's name or given name
bibdoc_video_docname, bibdoc_video_extension = decompose_file(batch_job['input'])[1:]
if not bibdoc_video_extension or getval(batch_job, 'bibdoc_master_extension'):
bibdoc_video_extension = getval(batch_job, 'bibdoc_master_extension')
if getval(batch_job, 'bibdoc_master_docname'):
bibdoc_video_docname = getval(batch_job, 'bibdoc_master_docname')
write_message("Creating BibDoc for %s" % bibdoc_video_docname)
## If the bibdoc exists, receive it
if bibdoc_video_docname in recdoc.get_bibdoc_names():
bibdoc_video = recdoc.get_bibdoc(bibdoc_video_docname)
## Create a new bibdoc if it does not exist
else:
bibdoc_video = recdoc.add_bibdoc(docname=bibdoc_video_docname)
## Get the directory auf the newly created bibdoc to copy stuff there
bibdoc_video_directory = bibdoc_video.get_base_dir()
#--------#
# MASTER #
#--------#
if not getval(batch_job, 'update_from_master'):
if getval(batch_job, 'add_master'):
## Generate the right name for the master
## The master should be hidden first an then renamed
## when it is really available
## !!! FIX !!!
_task_write_message("Adding %s master to the BibDoc"
% bibdoc_video_docname)
master_format = compose_format(
bibdoc_video_extension,
getval(batch_job, 'bibdoc_master_subformat', 'master')
)
## If a file of the same format is there, something is wrong, remove it!
## it might be caused by a previous corrupted submission etc.
if bibdoc_video.format_already_exists_p(master_format):
bibdoc_video.delete_file(master_format, 1)
bibdoc_video.add_file_new_format(
batch_job['input'],
version=1,
description=getval(batch_job, 'bibdoc_master_description'),
comment=getval(batch_job, 'bibdoc_master_comment'),
docformat=master_format
)
#-----------#
# JOBS LOOP #
#-----------#
return_code = 1
global _BATCH_STEP
for job in batch_job['jobs']:
_task_write_message("----------- Job %s of %s -----------"
% (_BATCH_STEP, _BATCH_STEPS))
## Try to substitute docname with master docname
if getval(job, 'bibdoc_docname'):
job['bibdoc_docname'] = Template(job['bibdoc_docname']).safe_substitute({'bibdoc_master_docname': bibdoc_video_docname})
#-------------#
# TRANSCODING #
#-------------#
if job['mode'] == 'encode':
## Skip the job if assure_quality is not set and marked as fallback
if not getval(batch_job, 'assure_quality') and getval(job, 'fallback'):
continue
if getval(job, 'profile'):
profile = get_encoding_profile(job['profile'])
else:
profile = None
## We need an extension defined fot the video container
bibdoc_video_extension = getval(job, 'extension',
getval(profile, 'extension'))
if not bibdoc_video_extension:
raise Exception("No container/extension defined")
## Get the docname and subformat
bibdoc_video_subformat = getval(job, 'bibdoc_subformat')
bibdoc_slave_video_docname = getval(job, 'bibdoc_docname', bibdoc_video_docname)
## The subformat is incompatible with ffmpegs name convention
## We do the encoding without and rename it afterwards
bibdoc_video_fullpath = compose_file(
bibdoc_video_directory,
bibdoc_video_extension
)
_task_write_message("Transcoding %s to %s;%s" % (bibdoc_slave_video_docname,
bibdoc_video_extension,
bibdoc_video_subformat))
## We encode now directly into the bibdocs directory
encoding_result = encode_video(
input_file=batch_job['input'],
output_file=bibdoc_video_fullpath,
acodec=getval(job, 'audiocodec'),
vcodec=getval(job, 'videocodec'),
abitrate=getval(job, 'videobitrate'),
vbitrate=getval(job, 'audiobitrate'),
resolution=getval(job, 'resolution'),
passes=getval(job, 'passes', 1),
special=getval(job, 'special'),
specialfirst=getval(job, 'specialfirst'),
specialsecond=getval(job, 'specialsecond'),
metadata=getval(job, 'metadata'),
width=getval(job, 'width'),
height=getval(job, 'height'),
aspect=getval(batch_job, 'aspect'), # Aspect for every job
profile=getval(job, 'profile'),
update_fnc=_task_update_overall_status,
message_fnc=_task_write_message
)
return_code &= encoding_result
## only on success
if encoding_result:
## Rename it, adding the subformat
os.rename(bibdoc_video_fullpath,
compose_file(bibdoc_video_directory,
bibdoc_video_extension,
bibdoc_video_subformat,
1,
bibdoc_slave_video_docname)
)
#bibdoc_video._build_file_list()
bibdoc_video.touch()
bibdoc_video._sync_to_db()
bibdoc_video_format = compose_format(bibdoc_video_extension,
bibdoc_video_subformat)
if getval(job, 'bibdoc_comment'):
bibdoc_video.set_comment(getval(job, 'bibdoc_comment'),
bibdoc_video_format)
if getval(job, 'bibdoc_description'):
bibdoc_video.set_description(getval(job, 'bibdoc_description'),
bibdoc_video_format)
#------------#
# EXTRACTION #
#------------#
# if there are multiple extraction jobs, all the produced files
# with the same name will be in the same bibdoc! Make sure that
# you use different subformats or docname templates to avoid
# conflicts.
if job['mode'] == 'extract':
if getval(job, 'profile'):
profile = get_extract_profile(job['profile'])
else:
profile = {}
bibdoc_frame_subformat = getval(job, 'bibdoc_subformat')
_task_write_message("Extracting frames to temporary directory")
tmpdir = invenio.config.CFG_TMPDIR + "/" + str(uuid.uuid4())
os.mkdir(tmpdir)
#Move this to the batch description
bibdoc_frame_docname = getval(job, 'bibdoc_docname', bibdoc_video_docname)
tmpfname = (tmpdir + "/" + bibdoc_frame_docname + '.'
+ getval(profile, 'extension',
getval(job, 'extension', 'jpg')))
extraction_result = extract_frames(input_file=batch_job['input'],
output_file=tmpfname,
size=getval(job, 'size'),
positions=getval(job, 'positions'),
numberof=getval(job, 'numberof'),
width=getval(job, 'width'),
height=getval(job, 'height'),
aspect=getval(batch_job, 'aspect'),
profile=getval(job, 'profile'),
update_fnc=_task_update_overall_status,
)
return_code &= extraction_result
## only on success:
if extraction_result:
## for every filename in the directorys, create a bibdoc that contains
## all sizes of the frame from the two directories
files = os.listdir(tmpdir)
for filename in files:
## The docname was altered by BibEncode extract through substitution
## Retrieve it from the filename again
bibdoc_frame_docname, bibdoc_frame_extension = os.path.splitext(filename)
_task_write_message("Creating new bibdoc for %s" % bibdoc_frame_docname)
## If the bibdoc exists, receive it
if bibdoc_frame_docname in recdoc.get_bibdoc_names():
bibdoc_frame = recdoc.get_bibdoc(bibdoc_frame_docname)
## Create a new bibdoc if it does not exist
else:
bibdoc_frame = recdoc.add_bibdoc(docname=bibdoc_frame_docname)
## The filename including path from tmpdir
fname = os.path.join(tmpdir, filename)
bibdoc_frame_format = compose_format(bibdoc_frame_extension, bibdoc_frame_subformat)
## Same as with the master, if the format allready exists,
## override it, because something went wrong before
if bibdoc_frame.format_already_exists_p(bibdoc_frame_format):
bibdoc_frame.delete_file(bibdoc_frame_format, 1)
_task_write_message("Adding %s jpg;%s to BibDoc"
% (bibdoc_frame_docname,
getval(job, 'bibdoc_subformat')))
bibdoc_frame.add_file_new_format(
fname,
version=1,
description=getval(job, 'bibdoc_description'),
comment=getval(job, 'bibdoc_comment'),
docformat=bibdoc_frame_format)
## Remove the temporary folders
_task_write_message("Removing temporary directory")
shutil.rmtree(tmpdir)
_BATCH_STEP = _BATCH_STEP + 1
#-----------------#
# FIX BIBDOC/MARC #
#-----------------#
_task_write_message("----------- Handling MARCXML -----------")
## Fix the BibDoc for all the videos previously created
_task_write_message("Updating BibDoc of %s" % bibdoc_video_docname)
bibdoc_video._build_file_list()
## Fix the MARC
_task_write_message("Fixing MARC")
cli_fix_marc({}, [batch_job['recid']], False)
if getval(batch_job, 'collection'):
## Make the record visible by moving in from the collection
marcxml = ("<record><controlfield tag=\"001\">%d</controlfield>"
"<datafield tag=\"980\" ind1=\" \" ind2=\" \">"
"<subfield code=\"a\">%s</subfield></datafield></record>"
) % (batch_job['recid'], batch_job['collection'])
upload_marcxml_file(marcxml)
#---------------------#
# ADD MASTER METADATA #
#---------------------#
if getval(batch_job, 'add_master_metadata'):
_task_write_message("Adding master metadata")
pbcore = pbcore_metadata(input_file = getval(batch_job, 'input'),
pbcoreIdentifier = batch_job['recid'],
aspect_override = getval(batch_job, 'aspect'))
from invenio_formatter.engines.xslt import format
marcxml = format(pbcore, CFG_BIBENCODE_PBCORE_MARC_XSLT)
upload_marcxml_file(marcxml)
#------------------#
# ADD MARC SNIPPET #
#------------------#
if getval(batch_job, 'marc_snippet'):
marc_snippet = open(getval(batch_job, 'marc_snippet'))
marcxml = marc_snippet.read()
marc_snippet.close()
upload_marcxml_file(marcxml)
#--------------#
# DELETE INPUT #
#--------------#
if getval(batch_job, 'delete_input'):
_task_write_message("Deleting input file")
# only if successfull
if not return_code:
# only if input matches pattern
if getval(batch_job, 'delete_input_pattern', '') in getval(batch_job, 'input'):
try:
os.remove(getval(batch_job, 'input'))
except OSError:
pass
#--------------#
# NOTIFICATION #
#--------------#
## Send Notification emails on errors
if not return_code:
if getval(batch_job, 'notify_user'):
_notify_error_user(getval(batch_job, 'notify_user'),
getval(batch_job, 'submission_filename', batch_job['input']),
getval(batch_job, 'recid'),
getval(batch_job, 'submission_title', ""))
_task_write_message("Notify user because of an error")
if getval(batch_job, 'notify_admin'):
_task_write_message("Notify admin because of an error")
if type(getval(batch_job, 'notify_admin') == type(str()) ):
_notify_error_admin(batch_job,
getval(batch_job, 'notify_admin'))
else:
_notify_error_admin(batch_job)
else:
if getval(batch_job, 'notify_user'):
_task_write_message("Notify user because of success")
_notify_success_user(getval(batch_job, 'notify_user'),
getval(batch_job, 'submission_filename', batch_job['input']),
getval(batch_job, 'recid'),
getval(batch_job, 'submission_title', ""))
return 1
def extract_frames(input_file, output_file=None, size=None, positions=None,
numberof=None, extension='jpg',
width=None, height=None, aspect=None, profile=None,
update_fnc=task_update_progress,
message_fnc=write_message):
""" Extracts frames from a given video using ffmpeg based on the given
parameters. Starts a subprocess. The status of the process is continously
written to the given messaging functions.
@param input_file: Full path to the input video.
@type input_file: String
@param output_file: Full path to the output file, in case of multiple outs,
there will be squential numbers appended to the file's name
automatically. If this parameter is not given, the
output filename will be generated from the input file
The output can be substituted with information.
Valid substrings for substitution are:
%(input)s for the input filename
%(timecode)s for the timecode
%(size)s for the frame size
%(number)d for sequential numbers
Everything else that could be a python substitution substring
should be escaped accordingly.
!!! Warnning !!! FFmpeg will also try to substitude if there
are any '%' left. This will likely screw up the extraction.
@type output_file: string
@param size: The size of the frames. Format is WxH
@type size: string
@param positions: A list of positions within the video where the frames
should be shot. Percentual values between 0 and 100 or
HH:MM:SS.ss are accepted.
@type positions: string
@param numberof: In case you don't want to give positions but just a fixed
number of frames to extract.
@type numberof: nt
@param extension: If no output filename is given, construct the name with
this extension
@type extension: string
@param width: The width of the extracted frame.
@type width: int
@param height: The height of the extracted frame
@type height: int
@param aspect: A float representing the aspect ratio of the video.
4:3 equals 1.33 and 16:9 equals 1.77. See also 'width'
@type aspect: float or "4:3" like string
@param profile: A profile to use. The priority is on the parameters directly
given to the function.
@type profile: string
@param update_fnc: A function called to display or log an the encoding
status. This function must accept a string.
@type update_fnc: function
@param message_fnc: A function to log important messages or errors.
This function must accept a string.
@type message_fnc: function
@return: 1 if the extraction was successful, 0 if not
@rtype: bool
"""
#---------#
# PROFILE #
#---------#
## Takes parameters from the profile if they are not directly given
if profile:
profile = get_extract_profile(profile)
size = chose(size, 'size', profile)
positions = chose(positions, 'positions', profile)
numberof = chose(numberof, 'numberof', profile)
extension = chose(extension, 'extension', profile)
width = chose(width, 'width', profile)
height = chose(height, 'height', profile)
#---------------#
# Check and fix #
#---------------#
## If neither positions nor a number of shots are given
if not positions and not numberof:
raise ValueError("Either argument \'positions\' xor argument \'numberof\' must be given")
## If both are given
if positions and numberof:
raise ValueError("Arguments \'positions\' and \'numberof\' exclude each other")
## If just a number of shots to take is given by 'numberof'
if numberof and not positions:
## Parse the duration from the input
info = ffprobe_metadata(input_file)
if info is None:
message_fnc("An error occured while receiving the video log")
return 0
duration = float(info['format']['duration'])
if duration is None:
message_fnc("Could not extract by \'numberof\' because video duration is unknown.")
return 0
positions = []
for pos in range(numberof):
## Calculate the position for every shot and append it to the list
position = pos * (duration / numberof)
positions.append(position)
## If specific positions are given
elif positions and not numberof:
## Check if correct timecodes or seconds are given
i = 0
for pos in positions:
if not (is_seconds(pos) or is_timecode(pos)):
raise ValueError("The given position \'%s\' is neither a value in seconds nor a timecode!" % str(pos))
## if a timecode is given, convert it to seconds
if is_timecode(pos):
positions[i] = timecode_to_seconds(pos)
i += 1
## If no output filename is given, use input filename and append jpg
if output_file is None:
ipath = os.path.splitext(input_file)[0]
if not extension.startswith("."):
extension = "." + extension
output_file = ipath + extension
## If no explizit size for the frames is given
if not size:
size = determine_resolution_preserving_aspect(input_file, width, height, aspect)
#------------#
# Extraction #
#------------#
counter = 1
for position in positions:
#---------------------------#
# Generate output file name #
#---------------------------#
number_substituted = False
if '%(number)' in output_file:
number_substituted = True
## If the output filename should be stubstituted
try:
output_filename = output_file % {
'input': os.path.splitext(os.path.split(input_file)[1])[0],
'timecode': seconds_to_timecode(position),
'size': size,
'number': counter
}
except KeyError:
raise
## In case that more than one shot is taken and you don't want to substitute
if not number_substituted:
if len(positions) > 1:
path, ext = os.path.splitext(output_file)
output_filename = path + str(counter).zfill(len(str(len(positions)))) + ext
## If you dont want to substitute and only one file is selected,
## it will just take the output or input name without altering it
else:
output_filename = output_file
#-------------#
# Run process #
#-------------#
## Build the command for ffmpeg
command = (CFG_BIBENCODE_FFMPEG_EXTRACT_COMMAND % (
position, input_file, size, output_filename
)).split()
## Start subprocess and poll the output until it finishes
process = subprocess.Popen(command, stderr=subprocess.PIPE)
stderr = []
while process.poll() is None:
## We want to keep the last lines of output in case of an error
stderr += process.communicate()[1].splitlines()
stderr = stderr[-5:]
## If something went wrong, print the last lines of the log
if process.poll() != 0:
msg = ("Error while extracting frame %d of %d" % (counter, len(positions)))
message_fnc(msg)
update_fnc(msg)
## Print the end of the log
message_fnc("Last lines of the FFmpeg log:")
for line in stderr:
message_fnc(line)
return 0
else:
update_fnc("Frame %d of %d extracted" % (counter, len(positions)))
counter += 1
## Everything should be fine if this position is reached
message_fnc("Extraction of frames was successful")
return 1
def process_batch_job(batch_job_file):
""" Processes a batch job description dictionary
@param batch_job_file: a fullpath to a batch job file
@type batch_job_file: string
@return: 1 if the process was successful, 0 if not
@rtype; int
"""
from invenio.legacy.bibdocfile.cli import cli_fix_marc
def upload_marcxml_file(marcxml):
""" Creates a temporary marcxml file and sends it to bibupload
"""
xml_filename = 'bibencode_'+ str(batch_job['recid']) + '_' + str(uuid.uuid4()) + '.xml'
xml_filename = os.path.join(invenio.config.CFG_TMPSHAREDDIR, xml_filename)
xml_file = file(xml_filename, 'w')
xml_file.write(marcxml)
xml_file.close()
targs = ['-c', xml_filename]
task_low_level_submission('bibupload', 'bibencode', *targs)
#---------#
# GENERAL #
#---------#
_task_write_message("----------- Handling Master -----------")
## Check the validity of the batch file here
batch_job = json_decode_file(batch_job_file)
## Sanitise batch description and raise errrors
batch_job = sanitise_batch_job(batch_job)
## Check if the record exists
# if record_exists(batch_job['recid']) < 1:
# raise Exception("Record not found")
recdoc = BibRecDocs(batch_job['recid'])
#--------------------#
# UPDATE FROM MASTER #
#--------------------#
## We want to add new stuff to the video's record, using the master as input
if getval(batch_job, 'update_from_master'):
found_master = False
bibdocs = recdoc.list_bibdocs()
for bibdoc in bibdocs:
bibdocfiles = bibdoc.list_all_files()
for bibdocfile in bibdocfiles:
comment = bibdocfile.get_comment()
description = bibdocfile.get_description()
subformat = bibdocfile.get_subformat()
m_comment = getval(batch_job, 'bibdoc_master_comment', comment)
m_description = getval(batch_job, 'bibdoc_master_description', description)
m_subformat = getval(batch_job, 'bibdoc_master_subformat', subformat)
if (comment == m_comment and
description == m_description and
subformat == m_subformat):
found_master = True
batch_job['input'] = bibdocfile.get_full_path()
## Get the aspect of the from the record
try:
## Assumes pbcore metadata mapping
batch_job['aspect'] = get_fieldvalues(124, CFG_BIBENCODE_ASPECT_RATIO_MARC_FIELD)[0]
except IndexError:
pass
break
if found_master:
break
if not found_master:
_task_write_message("Video master for record %d not found"
% batch_job['recid'])
task_update_progress("Video master for record %d not found"
% batch_job['recid'])
## Maybe send an email?
return 1
## Clean the job to do no upscaling etc
if getval(batch_job, 'assure_quality'):
batch_job = clean_job_for_quality(batch_job)
global _BATCH_STEPS
_BATCH_STEPS = len(batch_job['jobs'])
## Generate the docname from the input filename's name or given name
bibdoc_video_docname, bibdoc_video_extension = decompose_file(batch_job['input'])[1:]
if not bibdoc_video_extension or getval(batch_job, 'bibdoc_master_extension'):
bibdoc_video_extension = getval(batch_job, 'bibdoc_master_extension')
if getval(batch_job, 'bibdoc_master_docname'):
bibdoc_video_docname = getval(batch_job, 'bibdoc_master_docname')
write_message("Creating BibDoc for %s" % bibdoc_video_docname)
## If the bibdoc exists, receive it
if bibdoc_video_docname in recdoc.get_bibdoc_names():
bibdoc_video = recdoc.get_bibdoc(bibdoc_video_docname)
## Create a new bibdoc if it does not exist
else:
bibdoc_video = recdoc.add_bibdoc(docname=bibdoc_video_docname)
## Get the directory auf the newly created bibdoc to copy stuff there
bibdoc_video_directory = bibdoc_video.get_base_dir()
#--------#
# MASTER #
#--------#
if not getval(batch_job, 'update_from_master'):
if getval(batch_job, 'add_master'):
## Generate the right name for the master
## The master should be hidden first an then renamed
## when it is really available
## !!! FIX !!!
_task_write_message("Adding %s master to the BibDoc"
% bibdoc_video_docname)
master_format = compose_format(
bibdoc_video_extension,
getval(batch_job, 'bibdoc_master_subformat', 'master')
)
## If a file of the same format is there, something is wrong, remove it!
## it might be caused by a previous corrupted submission etc.
if bibdoc_video.format_already_exists_p(master_format):
bibdoc_video.delete_file(master_format, 1)
bibdoc_video.add_file_new_format(
batch_job['input'],
version=1,
description=getval(batch_job, 'bibdoc_master_description'),
comment=getval(batch_job, 'bibdoc_master_comment'),
docformat=master_format
)
#-----------#
# JOBS LOOP #
#-----------#
return_code = 1
global _BATCH_STEP
for job in batch_job['jobs']:
_task_write_message("----------- Job %s of %s -----------"
% (_BATCH_STEP, _BATCH_STEPS))
## Try to substitute docname with master docname
if getval(job, 'bibdoc_docname'):
job['bibdoc_docname'] = Template(job['bibdoc_docname']).safe_substitute({'bibdoc_master_docname': bibdoc_video_docname})
#-------------#
# TRANSCODING #
#-------------#
if job['mode'] == 'encode':
## Skip the job if assure_quality is not set and marked as fallback
if not getval(batch_job, 'assure_quality') and getval(job, 'fallback'):
continue
if getval(job, 'profile'):
profile = get_encoding_profile(job['profile'])
else:
profile = None
## We need an extension defined fot the video container
bibdoc_video_extension = getval(job, 'extension',
getval(profile, 'extension'))
if not bibdoc_video_extension:
raise Exception("No container/extension defined")
## Get the docname and subformat
bibdoc_video_subformat = getval(job, 'bibdoc_subformat')
bibdoc_slave_video_docname = getval(job, 'bibdoc_docname', bibdoc_video_docname)
## The subformat is incompatible with ffmpegs name convention
## We do the encoding without and rename it afterwards
bibdoc_video_fullpath = compose_file(
bibdoc_video_directory,
bibdoc_video_extension
)
_task_write_message("Transcoding %s to %s;%s" % (bibdoc_slave_video_docname,
bibdoc_video_extension,
bibdoc_video_subformat))
## We encode now directly into the bibdocs directory
encoding_result = encode_video(
input_file=batch_job['input'],
output_file=bibdoc_video_fullpath,
acodec=getval(job, 'audiocodec'),
vcodec=getval(job, 'videocodec'),
abitrate=getval(job, 'videobitrate'),
vbitrate=getval(job, 'audiobitrate'),
resolution=getval(job, 'resolution'),
passes=getval(job, 'passes', 1),
special=getval(job, 'special'),
specialfirst=getval(job, 'specialfirst'),
specialsecond=getval(job, 'specialsecond'),
metadata=getval(job, 'metadata'),
width=getval(job, 'width'),
height=getval(job, 'height'),
aspect=getval(batch_job, 'aspect'), # Aspect for every job
profile=getval(job, 'profile'),
update_fnc=_task_update_overall_status,
message_fnc=_task_write_message
)
return_code &= encoding_result
## only on success
if encoding_result:
## Rename it, adding the subformat
os.rename(bibdoc_video_fullpath,
compose_file(bibdoc_video_directory,
bibdoc_video_extension,
bibdoc_video_subformat,
1,
bibdoc_slave_video_docname)
)
#bibdoc_video._build_file_list()
bibdoc_video.touch()
bibdoc_video._sync_to_db()
bibdoc_video_format = compose_format(bibdoc_video_extension,
bibdoc_video_subformat)
if getval(job, 'bibdoc_comment'):
bibdoc_video.set_comment(getval(job, 'bibdoc_comment'),
bibdoc_video_format)
if getval(job, 'bibdoc_description'):
bibdoc_video.set_description(getval(job, 'bibdoc_description'),
bibdoc_video_format)
#------------#
# EXTRACTION #
#------------#
# if there are multiple extraction jobs, all the produced files
# with the same name will be in the same bibdoc! Make sure that
# you use different subformats or docname templates to avoid
# conflicts.
if job['mode'] == 'extract':
if getval(job, 'profile'):
profile = get_extract_profile(job['profile'])
else:
profile = {}
bibdoc_frame_subformat = getval(job, 'bibdoc_subformat')
_task_write_message("Extracting frames to temporary directory")
tmpdir = invenio.config.CFG_TMPDIR + "/" + str(uuid.uuid4())
os.mkdir(tmpdir)
#Move this to the batch description
bibdoc_frame_docname = getval(job, 'bibdoc_docname', bibdoc_video_docname)
tmpfname = (tmpdir + "/" + bibdoc_frame_docname + '.'
+ getval(profile, 'extension',
getval(job, 'extension', 'jpg')))
extraction_result = extract_frames(input_file=batch_job['input'],
output_file=tmpfname,
size=getval(job, 'size'),
positions=getval(job, 'positions'),
numberof=getval(job, 'numberof'),
width=getval(job, 'width'),
height=getval(job, 'height'),
aspect=getval(batch_job, 'aspect'),
profile=getval(job, 'profile'),
update_fnc=_task_update_overall_status,
)
return_code &= extraction_result
## only on success:
if extraction_result:
## for every filename in the directorys, create a bibdoc that contains
## all sizes of the frame from the two directories
files = os.listdir(tmpdir)
for filename in files:
## The docname was altered by BibEncode extract through substitution
## Retrieve it from the filename again
bibdoc_frame_docname, bibdoc_frame_extension = os.path.splitext(filename)
_task_write_message("Creating new bibdoc for %s" % bibdoc_frame_docname)
## If the bibdoc exists, receive it
if bibdoc_frame_docname in recdoc.get_bibdoc_names():
bibdoc_frame = recdoc.get_bibdoc(bibdoc_frame_docname)
## Create a new bibdoc if it does not exist
else:
bibdoc_frame = recdoc.add_bibdoc(docname=bibdoc_frame_docname)
## The filename including path from tmpdir
fname = os.path.join(tmpdir, filename)
bibdoc_frame_format = compose_format(bibdoc_frame_extension, bibdoc_frame_subformat)
## Same as with the master, if the format allready exists,
## override it, because something went wrong before
if bibdoc_frame.format_already_exists_p(bibdoc_frame_format):
bibdoc_frame.delete_file(bibdoc_frame_format, 1)
_task_write_message("Adding %s jpg;%s to BibDoc"
% (bibdoc_frame_docname,
getval(job, 'bibdoc_subformat')))
bibdoc_frame.add_file_new_format(
fname,
version=1,
description=getval(job, 'bibdoc_description'),
comment=getval(job, 'bibdoc_comment'),
docformat=bibdoc_frame_format)
## Remove the temporary folders
_task_write_message("Removing temporary directory")
shutil.rmtree(tmpdir)
_BATCH_STEP = _BATCH_STEP + 1
#-----------------#
# FIX BIBDOC/MARC #
#-----------------#
_task_write_message("----------- Handling MARCXML -----------")
## Fix the BibDoc for all the videos previously created
_task_write_message("Updating BibDoc of %s" % bibdoc_video_docname)
bibdoc_video._build_file_list()
## Fix the MARC
_task_write_message("Fixing MARC")
cli_fix_marc({}, [batch_job['recid']], False)
if getval(batch_job, 'collection'):
## Make the record visible by moving in from the collection
marcxml = ("<record><controlfield tag=\"001\">%d</controlfield>"
"<datafield tag=\"980\" ind1=\" \" ind2=\" \">"
"<subfield code=\"a\">%s</subfield></datafield></record>"
) % (batch_job['recid'], batch_job['collection'])
upload_marcxml_file(marcxml)
#---------------------#
# ADD MASTER METADATA #
#---------------------#
if getval(batch_job, 'add_master_metadata'):
_task_write_message("Adding master metadata")
pbcore = pbcore_metadata(input_file = getval(batch_job, 'input'),
pbcoreIdentifier = batch_job['recid'],
aspect_override = getval(batch_job, 'aspect'))
from invenio.modules.formatter.engines.xslt import format
marcxml = format(pbcore, CFG_BIBENCODE_PBCORE_MARC_XSLT)
upload_marcxml_file(marcxml)
#------------------#
# ADD MARC SNIPPET #
#------------------#
if getval(batch_job, 'marc_snippet'):
marc_snippet = open(getval(batch_job, 'marc_snippet'))
marcxml = marc_snippet.read()
marc_snippet.close()
upload_marcxml_file(marcxml)
#--------------#
# DELETE INPUT #
#--------------#
if getval(batch_job, 'delete_input'):
_task_write_message("Deleting input file")
# only if successfull
if not return_code:
# only if input matches pattern
if getval(batch_job, 'delete_input_pattern', '') in getval(batch_job, 'input'):
try:
os.remove(getval(batch_job, 'input'))
except OSError:
pass
#--------------#
# NOTIFICATION #
#--------------#
## Send Notification emails on errors
if not return_code:
if getval(batch_job, 'notify_user'):
_notify_error_user(getval(batch_job, 'notify_user'),
getval(batch_job, 'submission_filename', batch_job['input']),
getval(batch_job, 'recid'),
getval(batch_job, 'submission_title', ""))
_task_write_message("Notify user because of an error")
if getval(batch_job, 'notify_admin'):
_task_write_message("Notify admin because of an error")
if type(getval(batch_job, 'notify_admin') == type(str()) ):
_notify_error_admin(batch_job,
getval(batch_job, 'notify_admin'))
else:
_notify_error_admin(batch_job)
else:
if getval(batch_job, 'notify_user'):
_task_write_message("Notify user because of success")
_notify_success_user(getval(batch_job, 'notify_user'),
getval(batch_job, 'submission_filename', batch_job['input']),
getval(batch_job, 'recid'),
getval(batch_job, 'submission_title', ""))
return 1
def extract_frames(input_file,
output_file=None,
size=None,
positions=None,
numberof=None,
extension='jpg',
width=None,
height=None,
aspect=None,
profile=None,
update_fnc=task_update_progress,
message_fnc=write_message):
""" Extracts frames from a given video using ffmpeg based on the given
parameters. Starts a subprocess. The status of the process is continously
written to the given messaging functions.
@param input_file: Full path to the input video.
@type input_file: String
@param output_file: Full path to the output file, in case of multiple outs,
there will be squential numbers appended to the file's name
automatically. If this parameter is not given, the
output filename will be generated from the input file
The output can be substituted with information.
Valid substrings for substitution are:
%(input)s for the input filename
%(timecode)s for the timecode
%(size)s for the frame size
%(number)d for sequential numbers
Everything else that could be a python substitution substring
should be escaped accordingly.
!!! Warnning !!! FFmpeg will also try to substitude if there
are any '%' left. This will likely screw up the extraction.
@type output_file: string
@param size: The size of the frames. Format is WxH
@type size: string
@param positions: A list of positions within the video where the frames
should be shot. Percentual values between 0 and 100 or
HH:MM:SS.ss are accepted.
@type positions: string
@param numberof: In case you don't want to give positions but just a fixed
number of frames to extract.
@type numberof: nt
@param extension: If no output filename is given, construct the name with
this extension
@type extension: string
@param width: The width of the extracted frame.
@type width: int
@param height: The height of the extracted frame
@type height: int
@param aspect: A float representing the aspect ratio of the video.
4:3 equals 1.33 and 16:9 equals 1.77. See also 'width'
@type aspect: float or "4:3" like string
@param profile: A profile to use. The priority is on the parameters directly
given to the function.
@type profile: string
@param update_fnc: A function called to display or log an the encoding
status. This function must accept a string.
@type update_fnc: function
@param message_fnc: A function to log important messages or errors.
This function must accept a string.
@type message_fnc: function
@return: 1 if the extraction was successful, 0 if not
@rtype: bool
"""
#---------#
# PROFILE #
#---------#
## Takes parameters from the profile if they are not directly given
if profile:
profile = get_extract_profile(profile)
size = chose(size, 'size', profile)
positions = chose(positions, 'positions', profile)
numberof = chose(numberof, 'numberof', profile)
extension = chose(extension, 'extension', profile)
width = chose(width, 'width', profile)
height = chose(height, 'height', profile)
#---------------#
# Check and fix #
#---------------#
## If neither positions nor a number of shots are given
if not positions and not numberof:
raise ValueError(
"Either argument \'positions\' xor argument \'numberof\' must be given"
)
## If both are given
if positions and numberof:
raise ValueError(
"Arguments \'positions\' and \'numberof\' exclude each other")
## If just a number of shots to take is given by 'numberof'
if numberof and not positions:
## Parse the duration from the input
info = ffprobe_metadata(input_file)
if info is None:
message_fnc("An error occured while receiving the video log")
return 0
duration = float(info['format']['duration'])
if duration is None:
message_fnc(
"Could not extract by \'numberof\' because video duration is unknown."
)
return 0
positions = []
for pos in range(numberof):
## Calculate the position for every shot and append it to the list
position = pos * (duration / numberof)
positions.append(position)
## If specific positions are given
elif positions and not numberof:
## Check if correct timecodes or seconds are given
i = 0
for pos in positions:
if not (is_seconds(pos) or is_timecode(pos)):
raise ValueError(
"The given position \'%s\' is neither a value in seconds nor a timecode!"
% str(pos))
## if a timecode is given, convert it to seconds
if is_timecode(pos):
positions[i] = timecode_to_seconds(pos)
i += 1
## If no output filename is given, use input filename and append jpg
if output_file is None:
ipath = os.path.splitext(input_file)[0]
if not extension.startswith("."):
extension = "." + extension
output_file = ipath + extension
## If no explizit size for the frames is given
if not size:
size = determine_resolution_preserving_aspect(input_file, width,
height, aspect)
#------------#
# Extraction #
#------------#
counter = 1
for position in positions:
#---------------------------#
# Generate output file name #
#---------------------------#
number_substituted = False
if '%(number)' in output_file:
number_substituted = True
## If the output filename should be stubstituted
try:
output_filename = output_file % {
'input': os.path.splitext(os.path.split(input_file)[1])[0],
'timecode': seconds_to_timecode(position),
'size': size,
'number': counter
}
except KeyError:
raise
## In case that more than one shot is taken and you don't want to substitute
if not number_substituted:
if len(positions) > 1:
path, ext = os.path.splitext(output_file)
output_filename = path + str(counter).zfill(
len(str(len(positions)))) + ext
## If you dont want to substitute and only one file is selected,
## it will just take the output or input name without altering it
else:
output_filename = output_file
#-------------#
# Run process #
#-------------#
## Build the command for ffmpeg
command = (CFG_BIBENCODE_FFMPEG_EXTRACT_COMMAND %
(position, input_file, size, output_filename)).split()
## Start subprocess and poll the output until it finishes
process = subprocess.Popen(command, stderr=subprocess.PIPE)
stderr = []
while process.poll() is None:
## We want to keep the last lines of output in case of an error
stderr += process.communicate()[1].splitlines()
stderr = stderr[-5:]
## If something went wrong, print the last lines of the log
if process.poll() != 0:
msg = ("Error while extracting frame %d of %d" %
(counter, len(positions)))
message_fnc(msg)
update_fnc(msg)
## Print the end of the log
message_fnc("Last lines of the FFmpeg log:")
for line in stderr:
message_fnc(line)
return 0
else:
update_fnc("Frame %d of %d extracted" % (counter, len(positions)))
counter += 1
## Everything should be fine if this position is reached
message_fnc("Extraction of frames was successful")
return 1
