mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-22 17:51:16 +00:00
f46831a51d
Port the old gst-discover example to 1.0 Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5187>
107 lines
3.4 KiB
Python
Executable file
107 lines
3.4 KiB
Python
Executable file
#!/usr/bin/env python
|
|
# gst-python
|
|
# Copyright (C) 2006 Andy Wingo <wingo at pobox.com>
|
|
# Copyright (C) 2023 Jan Schmidt <jan at centricular.com>
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Library General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2 of the License, or (at your option) any later version.
|
|
#
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Library General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Library General Public
|
|
# License along with this library; if not, write to the
|
|
# Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
# Boston, MA 02110-1301, USA.
|
|
import os
|
|
import sys
|
|
import gi
|
|
|
|
gi.require_version("GLib", "2.0")
|
|
gi.require_version("Gst", "1.0")
|
|
gi.require_version("GstPbutils", "1.0")
|
|
from gi.repository import GLib, Gst, GstPbutils
|
|
|
|
def fail(path, info):
|
|
error = info.get_result()
|
|
print(f"Discovery of {path} failed with result {error}")
|
|
sys.exit(1)
|
|
|
|
def print_stream_info(stream_info, depth):
|
|
indent = " "*depth
|
|
|
|
stream_type = stream_info.get_stream_type_nick()
|
|
stream_num = stream_info.get_stream_number()
|
|
stream_id = stream_info.get_stream_id()
|
|
caps = stream_info.get_caps()
|
|
print(f"{indent}{stream_type} #{stream_num}: {caps}")
|
|
print(f"{indent} Stream ID: {stream_id}")
|
|
|
|
tags = stream_info.get_tags()
|
|
if tags is not None:
|
|
print(f"{indent} Tags: ")
|
|
for (key, tag) in tags.enumerate():
|
|
print(f"{indent} {key}: {tag}")
|
|
|
|
if isinstance(stream_info, GstPbutils.DiscovererVideoInfo) or isinstance(stream_info, GstPbutils.DiscovererAudioInfo):
|
|
print(f"{indent}Bitrate: {stream_info.get_bitrate()}")
|
|
print(f"{indent}Max Bitrate: {stream_info.get_max_bitrate()}")
|
|
print()
|
|
|
|
def print_topology(stream_info, depth):
|
|
print_stream_info(stream_info, depth)
|
|
|
|
next = stream_info.get_next()
|
|
if next is not None:
|
|
print_topology (next, depth + 2);
|
|
elif isinstance(stream_info, GstPbutils.DiscovererContainerInfo):
|
|
streams = stream_info.get_streams()
|
|
for tmpinf in streams:
|
|
print_topology (tmpinf, depth + 2);
|
|
|
|
def succeed(info):
|
|
print(f"URI: {info.get_uri()}")
|
|
# Print properties
|
|
duration = info.get_duration()
|
|
seekable = info.get_seekable()
|
|
is_live = info.get_live()
|
|
|
|
print(f"Duration: {Gst.TIME_ARGS(duration)}\nSeekable: {seekable}\nLive: {is_live}")
|
|
|
|
print_topology(info.get_stream_info(), 0)
|
|
sys.exit(0)
|
|
|
|
def discover(path):
|
|
def discovered(d, info, err):
|
|
if info.get_result() == GstPbutils.DiscovererResult.OK:
|
|
succeed(info)
|
|
else:
|
|
fail(path, info)
|
|
|
|
d = GstPbutils.Discoverer.new(5 * Gst.SECOND)
|
|
d.connect('discovered', discovered)
|
|
d.start()
|
|
d.discover_uri_async(path)
|
|
GLib.MainLoop().run()
|
|
|
|
def usage():
|
|
print("usage: gst-discover PATH-TO-MEDIA-FILE", file=sys.stderr)
|
|
sys.exit(1)
|
|
|
|
def main(argv):
|
|
if len(argv) != 2:
|
|
usage()
|
|
path = argv.pop()
|
|
if not os.path.isfile(path):
|
|
print(f"error: file {path} does not exist", file=sys.stderr)
|
|
usage()
|
|
|
|
Gst.init(sys.argv)
|
|
return discover('file://' + os.path.abspath(path))
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main(sys.argv))
|