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cc-4105: updated to martin's change to replaygain

This commit is contained in:
Rudi Grinberg 2012-08-08 11:59:52 -04:00
parent ccd0d4e8cf
commit cff9a5cb71
1 changed files with 11 additions and 6 deletions
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17
python_apps/media-monitor2/media/update/replaygain.py
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@ -4,11 +4,16 @@ import os
import sys import sys
import shutil import shutil
import tempfile import tempfile
import logging
logger = logging.getLogger()
def get_process_output(command): def get_process_output(command):
""" """
Run subprocess and return stdout Run subprocess and return stdout
""" """
logger.debug(command)
p = Popen(command, shell=True, stdout=PIPE) p = Popen(command, shell=True, stdout=PIPE)
return p.communicate()[0].strip() return p.communicate()[0].strip()
@ -46,9 +51,9 @@ def duplicate_file(file_path):
def calculate_replay_gain(file_path): def calculate_replay_gain(file_path):
""" """
This function accepts files of type mp3/ogg/flac and returns a calculated This function accepts files of type mp3/ogg/flac and returns a calculated ReplayGain value in dB.
ReplayGain value in dB. If the value cannot be calculated for some reason, If the value cannot be calculated for some reason, then we default to 0 (Unity Gain).
then we default to 0 (Unity Gain).
http://wiki.hydrogenaudio.org/index.php?title=ReplayGain_1.0_specification http://wiki.hydrogenaudio.org/index.php?title=ReplayGain_1.0_specification
""" """
@ -61,14 +66,14 @@ def calculate_replay_gain(file_path):
search = None search = None
temp_file_path = duplicate_file(file_path) temp_file_path = duplicate_file(file_path)
if re.search(r'mp3$', temp_file_path, re.IGNORECASE) or get_mime_type(temp_file_path) == "audio/mpeg": if re.search(r'mp3$', file_path, re.IGNORECASE) or get_mime_type(temp_file_path) == "audio/mpeg":
if run_process("which mp3gain > /dev/null") == 0: if run_process("which mp3gain > /dev/null") == 0:
out = get_process_output('mp3gain -q "%s" 2> /dev/null' % temp_file_path) out = get_process_output('mp3gain -q "%s" 2> /dev/null' % temp_file_path)
search = re.search(r'Recommended "Track" dB change: (.*)', out) search = re.search(r'Recommended "Track" dB change: (.*)', out)
else: else:
print "mp3gain not found" print "mp3gain not found"
#Log warning #Log warning
elif re.search(r'ogg$', temp_file_path, re.IGNORECASE) or get_mime_type(temp_file_path) == "application/ogg": elif re.search(r'og(g|a)$', file_path, re.IGNORECASE) or get_mime_type(temp_file_path) == "application/ogg":
if run_process("which vorbisgain > /dev/null && which ogginfo > /dev/null") == 0: if run_process("which vorbisgain > /dev/null && which ogginfo > /dev/null") == 0:
run_process('vorbisgain -q -f "%s" 2>/dev/null >/dev/null' % temp_file_path) run_process('vorbisgain -q -f "%s" 2>/dev/null >/dev/null' % temp_file_path)
out = get_process_output('ogginfo "%s"' % temp_file_path) out = get_process_output('ogginfo "%s"' % temp_file_path)
@ -76,7 +81,7 @@ def calculate_replay_gain(file_path):
else: else:
print "vorbisgain/ogginfo not found" print "vorbisgain/ogginfo not found"
#Log warning #Log warning
elif re.search(r'flac$', temp_file_path, re.IGNORECASE) or get_mime_type(temp_file_path) == "audio/x-flac": elif re.search(r'flac$', file_path, re.IGNORECASE) or get_mime_type(temp_file_path) == "audio/x-flac":
if run_process("which metaflac > /dev/null") == 0: if run_process("which metaflac > /dev/null") == 0:
out = get_process_output('metaflac --show-tag=REPLAYGAIN_TRACK_GAIN "%s"' % temp_file_path) out = get_process_output('metaflac --show-tag=REPLAYGAIN_TRACK_GAIN "%s"' % temp_file_path)
search = re.search(r'REPLAYGAIN_TRACK_GAIN=(.*) dB', out) search = re.search(r'REPLAYGAIN_TRACK_GAIN=(.*) dB', out)