147 lines
6.1 KiB
Python
147 lines
6.1 KiB
Python
import sys
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import subprocess
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# from fHDHR.exceptions import TunerError
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class FFMPEG_Stream():
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def __init__(self, fhdhr, stream_args, tuner):
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self.fhdhr = fhdhr
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self.stream_args = stream_args
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self.tuner = tuner
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self.bytes_per_read = int(self.fhdhr.config.dict["streaming"]["bytes_per_read"])
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self.ffmpeg_command = self.ffmpeg_command_assemble(stream_args)
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def get(self):
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ffmpeg_proc = subprocess.Popen(self.ffmpeg_command, stdout=subprocess.PIPE)
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def generate():
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try:
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while self.tuner.tuner_lock.locked():
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chunk = ffmpeg_proc.stdout.read(self.bytes_per_read)
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if not chunk:
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break
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# raise TunerError("807 - No Video Data")
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yield chunk
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chunk_size = int(sys.getsizeof(chunk))
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self.tuner.add_downloaded_size(chunk_size)
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self.fhdhr.logger.info("Connection Closed: Tuner Lock Removed")
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except GeneratorExit:
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self.fhdhr.logger.info("Connection Closed.")
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except Exception as e:
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self.fhdhr.logger.info("Connection Closed: %s" % e)
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finally:
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ffmpeg_proc.terminate()
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ffmpeg_proc.communicate()
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ffmpeg_proc.kill()
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self.fhdhr.logger.info("Connection Closed: Tuner Lock Removed")
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self.tuner.close()
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# raise TunerError("806 - Tune Failed")
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return generate()
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def ffmpeg_command_assemble(self, stream_args):
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ffmpeg_command = [
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self.fhdhr.config.dict["ffmpeg"]["path"],
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"-i", stream_args["stream_info"]["url"],
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]
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ffmpeg_command.extend(self.ffmpeg_headers(stream_args))
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ffmpeg_command.extend(self.ffmpeg_duration(stream_args))
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ffmpeg_command.extend(self.transcode_profiles(stream_args))
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ffmpeg_command.extend(self.ffmpeg_loglevel())
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ffmpeg_command.extend(["pipe:stdout"])
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return ffmpeg_command
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def ffmpeg_headers(self, stream_args):
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ffmpeg_command = []
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if stream_args["stream_info"]["headers"]:
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headers_string = ""
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if len(list(stream_args["stream_info"]["headers"].keys())) > 1:
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for x in list(stream_args["stream_info"]["headers"].keys()):
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headers_string += "%s: %s\r\n" % (x, stream_args["stream_info"]["headers"][x])
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else:
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for x in list(stream_args["stream_info"]["headers"].keys()):
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headers_string += "%s: %s" % (x, stream_args["stream_info"]["headers"][x])
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ffmpeg_command.extend(["-headers", '\"%s\"' % headers_string])
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return ffmpeg_command
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def ffmpeg_duration(self, stream_args):
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ffmpeg_command = []
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if stream_args["duration"]:
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ffmpeg_command.extend(["-t", str(stream_args["duration"])])
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else:
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ffmpeg_command.extend(
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[
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"-reconnect", "1",
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"-reconnect_at_eof", "1",
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"-reconnect_streamed", "1",
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"-reconnect_delay_max", "2",
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]
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)
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return ffmpeg_command
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def ffmpeg_loglevel(self):
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ffmpeg_command = []
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log_level = self.fhdhr.config.dict["logging"]["level"].lower()
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loglevel_dict = {
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"debug": "debug",
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"info": "info",
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"error": "error",
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"warning": "warning",
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"critical": "fatal",
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}
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if log_level not in ["info", "debug"]:
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ffmpeg_command.extend(["-nostats", "-hide_banner"])
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ffmpeg_command.extend(["-loglevel", loglevel_dict[log_level]])
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return ffmpeg_command
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def transcode_profiles(self, stream_args):
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# TODO implement actual profiles here
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"""
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• heavy: transcode to AVC with the same resolution, frame-rate, and interlacing as the
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original stream. For example 1080i60 AVC 1080i60, 720p60 AVC 720p60. → →
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• mobile: trancode to AVC progressive not exceeding 1280x720 30fps.
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• internet720: transcode to low bitrate AVC progressive not exceeding 1280x720 30fps.
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• internet480: transcode to low bitrate AVC progressive not exceeding 848x480 30fps for
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16:9 content, not exceeding 640x480 30fps for 4:3 content.
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• internet360: transcode to low bitrate AVC progressive not exceeding 640x360 30fps for
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16:9 content, not exceeding 480x360 30fps for 4:3 content.
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• internet240: transcode to low bitrate AVC progressive not exceeding 432x240 30fps for
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16:9 content, not exceeding 320x240 30fps for 4:3 content
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"""
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if stream_args["transcode_quality"]:
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self.fhdhr.logger.info("Client requested a %s transcode for stream." % stream_args["transcode_quality"])
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stream_args["transcode_quality"] = None
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ffmpeg_command = []
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if not stream_args["transcode_quality"]:
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ffmpeg_command.extend(
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[
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"-c", "copy",
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"-f", "mpegts",
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]
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)
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elif stream_args["transcode_quality"] == "heavy":
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ffmpeg_command.extend([])
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elif stream_args["transcode_quality"] == "mobile":
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ffmpeg_command.extend([])
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elif stream_args["transcode_quality"] == "internet720":
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ffmpeg_command.extend([])
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elif stream_args["transcode_quality"] == "internet480":
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ffmpeg_command.extend([])
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elif stream_args["transcode_quality"] == "internet360":
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ffmpeg_command.extend([])
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elif stream_args["transcode_quality"] == "internet240":
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ffmpeg_command.extend([])
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return ffmpeg_command
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