diff options
Diffstat (limited to 'voctocore/lib/pipeline.py')
| -rw-r--r-- | voctocore/lib/pipeline.py | 449 |
1 files changed, 24 insertions, 425 deletions
diff --git a/voctocore/lib/pipeline.py b/voctocore/lib/pipeline.py index 6267e9e..6c207fe 100644 --- a/voctocore/lib/pipeline.py +++ b/voctocore/lib/pipeline.py @@ -1,444 +1,43 @@ #!/usr/bin/python3 -import os, errno, time, logging -from gi.repository import GLib, Gst +import logging +from gi.repository import Gst # import controlserver annotation from lib.controlserver import controlServerEntrypoint # import library components from lib.config import Config -from lib.quadmix import QuadMix -from lib.videomix import VideoMix -from lib.audiomix import AudioMix -from lib.distributor import TimesTwoDistributor -from lib.shmsrc import FailsafeShmSrc -from lib.failvideosrc import FailVideoSrc -from lib.failaudiosrc import FailAudioSrc +from lib.videosrc import VideoSrc +from lib.videosrcmirror import VideoSrcMirror -class Pipeline(Gst.Pipeline): +class Pipeline(object): """mixing, streaming and encoding pipeline constuction and control""" log = logging.getLogger('Pipeline') - videonames = [] - audionames = [] - def __init__(self): - super().__init__() - - self.log.debug('Creating Video-Mixer') - # create audio and video mixer - self.quadmixer = QuadMix() - self.add(self.quadmixer) - - self.videomixer = VideoMix() - self.add(self.videomixer) - - self.audiomixer = AudioMix() - self.add(self.audiomixer) - - # read the path where the shm-control-sockets are located and ensure it exists - socketpath = Config.get('sources', 'socketpath') - self.log.info('Ensuring the configured socketpath exists: %s', socketpath) - try: - os.makedirs(socketpath) - except OSError as exception: - if exception.errno != errno.EEXIST: - raise - - self.videonames = Config.getlist('sources', 'video') - self.audionames = Config.getlist('sources', 'audio') - - caps = Gst.Caps.from_string(Config.get('sources', 'videocaps')) - self.log.debug('parsing videocaps from config: %s', caps.to_string()) - - for idx, name in enumerate(self.videonames): - socket = os.path.join(socketpath, 'v-'+name) - - self.log.info('Creating video-source "%s" at socket-path %s', name, socket) - sourcebin = FailsafeShmSrc(socket, caps, FailVideoSrc(idx, name)) - self.add(sourcebin) - - distributor = TimesTwoDistributor() - self.add(distributor) - sourcebin.link(distributor) - - mixerpad = self.quadmixer.request_mixer_pad() - distributor.get_static_pad('src_a').link(mixerpad) - - mixerpad = self.videomixer.request_mixer_pad() - distributor.get_static_pad('src_b').link(mixerpad) - - - caps = Gst.Caps.from_string(Config.get('sources', 'audiocaps')) - self.log.debug('parsing videocaps from config: %s', caps.to_string()) - - for idx, name in enumerate(self.audionames): - socket = os.path.join(socketpath, 'a-'+name) - - self.log.info('Creating audio-source "%s" at socket-path %s', name, socket) - sourcebin = FailsafeShmSrc(socket, caps, FailAudioSrc(idx, name)) - self.add(sourcebin) - - mixerpad = self.audiomixer.request_mixer_pad() - sourcebin.get_static_pad('src').link(mixerpad) - - # tell the quadmix that this were all sources and no more sources will come after this - self.quadmixer.finalize() - - self.quadmixer.set_active(0) - self.videomixer.set_active(0) - self.audiomixer.set_active(0) - - self.audioconv = Gst.ElementFactory.make('audioconvert', 'audioconv') - self.audioenc = Gst.ElementFactory.make('avenc_mp2', 'audioenc') - - self.videoconv = Gst.ElementFactory.make('videoconvert', 'videoconv') - self.videoenc = Gst.ElementFactory.make('avenc_mpeg2video', 'videoenc') - - self.mux = Gst.ElementFactory.make('mpegtsmux', 'mux') - self.sink = Gst.ElementFactory.make('filesink', 'sink') - - self.add(self.audioconv) - self.add(self.audioenc) - self.add(self.videoconv) - self.add(self.videoenc) - - self.add(self.mux) - self.add(self.sink) - - self.videomixer.link(self.videoconv) - self.videoconv.link(self.videoenc) - - self.audiomixer.link(self.audioconv) - self.audioconv.link(self.audioenc) - - self.videoenc.link(self.mux) - self.audioenc.link(self.mux) - - self.mux.link(self.sink) - - self.sink.set_property('location', '/home/peter/test.ts') - - - self.quadmixsink = Gst.ElementFactory.make('autovideosink', 'quadmixsink') - self.quadmixsink.set_property('sync', False) - self.add(self.quadmixsink) - self.quadmixer.link(self.quadmixsink) - - def run(self): - self.set_state(Gst.State.PAUSED) - time.sleep(0.5) - self.set_state(Gst.State.PLAYING) - - def quit(self): - self.set_state(Gst.State.NULL) - - - - - # # collection of video-sources to connect to the quadmix - # quadmixSources = [] - - # # create camera sources - # for camberabin in self.createDummyCamSources(): - # # link camerasource to audiomixer - # camberabin.get_by_name('audio_src').link(self.pipeline.get_by_name('liveaudio')) - - # # inject a ×2 distributor and link one end to the live-mixer - # distributor = self.createDistributor(camberabin.get_by_name('video_src'), camberabin.get_name()) - # distributor.get_by_name('a').link(self.pipeline.get_by_name('livevideo')) - - # # collect the other end to add it later to the quadmix - # quadmixSources.append(distributor.get_by_name('b')) - - # # TODO: generate pause & slides with another generator here which only - # # yields if the respective files are present and which only have a video-pad - - # # add all video-sources to the quadmix-monitor-screen - # self.addVideosToQuadmix(quadmixSources, self.pipeline.get_by_name('quadmix')) - - # # initialize to known defaults - # # TODO: make configurable - # self.switchVideo(0) - # self.switchAudio(0) - - # Gst.debug_bin_to_dot_file(self.pipeline, Gst.DebugGraphDetails.ALL, 'test') - # self.pipeline.set_state(Gst.State.PLAYING) - - - - - - - # def createMixer(self): - # """create audio and video mixer""" - # # create mixer-pipeline from string - # mixerbin = Gst.parse_bin_from_description(""" - # videomixer name=livevideo ! autovideosink - # input-selector name=liveaudio ! autoaudiosink - - # videotestsrc pattern="solid-color" foreground-color=0x808080 ! capsfilter name=filter ! videomixer name=quadmix ! autovideosink - # """, False) - - # # define caps for the videotestsrc which generates the background-color for the quadmix - # bgcaps = Gst.Caps.new_empty_simple('video/x-raw') - # bgcaps.set_value('width', round(self.monitorSize[0])) - # bgcaps.set_value('height', round(self.monitorSize[1])) - # mixerbin.get_by_name('filter').set_property('caps', bgcaps) - - # # name the bin, add and return it - # mixerbin.set_name('mixerbin') - # self.pipeline.add(mixerbin) - # return mixerbin - - # def addVideosToQuadmix(self, videosources, quadmix): - # """add all avaiable videosources to the quadmix""" - # count = len(videosources) - - # # coordinate of the cell where we place the next video - # place = [0, 0] - - # # number of cells in the quadmix-monitor - # grid = [0, 0] - # grid[0] = math.ceil(math.sqrt(count)) - # grid[1] = math.ceil(count / grid[0]) - - # # size of each cell in the quadmix-monitor - # cellSize = ( - # self.monitorSize[0] / grid[0], - # self.monitorSize[1] / grid[1] - # ) - - # print("showing {} videosources in a {}×{} grid in a {}×{} px window, which gives cells of {}×{} px per videosource".format( - # count, grid[0], grid[1], self.monitorSize[0], self.monitorSize[1], cellSize[0], cellSize[1])) - - # # iterate over all video-sources - # for idx, videosource in enumerate(videosources): - # # generate a pipeline for this videosource which - # # - scales the video to the request - # # - remove n px of the video (n = 5 if the video is highlighted else 0) - # # - add a colored border of n px of the video (n = 5 if the video is highlighted else 0) - # # - overlay the index of the video as text in the top left corner - # # - known & named output - # previewbin = Gst.parse_bin_from_description(""" - # videoscale name=in ! - # capsfilter name=caps ! - # videobox name=crop top=0 left=0 bottom=0 right=0 ! - # videobox fill=red top=-0 left=-0 bottom=-0 right=-0 name=add ! - # textoverlay color=0xFFFFFFFF halignment=left valignment=top xpad=10 ypad=5 font-desc="sans 35" name=text ! - # identity name=out - # """, False) - - # # name the bin and add it - # previewbin.set_name('previewbin-{}'.format(idx)) - # self.pipeline.add(previewbin) - # self.previewbins.append(previewbin) - - # # set the overlay-text - # previewbin.get_by_name('text').set_property('text', str(idx)) - - # # query the video-source caps and extract its size - # caps = videosource.get_static_pad('src').query_caps(None) - # capsstruct = caps.get_structure(0) - # srcSize = ( - # capsstruct.get_int('width')[1], - # capsstruct.get_int('height')[1], - # ) - - # # calculate the ideal scale factor and scale the sizes - # f = max(srcSize[0] / cellSize[0], srcSize[1] / cellSize[1]) - # scaleSize = ( - # srcSize[0] / f, - # srcSize[1] / f, - # ) - - # # calculate the top/left coordinate - # coord = ( - # place[0] * cellSize[0] + (cellSize[0] - scaleSize[0]) / 2, - # place[1] * cellSize[1] + (cellSize[1] - scaleSize[1]) / 2, - # ) - - # print("placing videosource {} of size {}×{} scaled by {} to {}×{} in a cell {}×{} px cell ({}/{}) at position ({}/{})".format( - # idx, srcSize[0], srcSize[1], f, scaleSize[0], scaleSize[1], cellSize[0], cellSize[1], place[0], place[1], coord[0], coord[1])) - - # # link the videosource to the input of the preview-bin - # videosource.link(previewbin.get_by_name('in')) - - # # create and set the caps for the preview-scaler - # scalecaps = Gst.Caps.new_empty_simple('video/x-raw') - # scalecaps.set_value('width', round(scaleSize[0])) - # scalecaps.set_value('height', round(scaleSize[1])) - # previewbin.get_by_name('caps').set_property('caps', scalecaps) - - # # request a pad from the quadmixer and configure x/y position - # sinkpad = quadmix.get_request_pad('sink_%u') - # sinkpad.set_property('xpos', round(coord[0])) - # sinkpad.set_property('ypos', round(coord[1])) - - # # link the output of the preview-bin to the mixer - # previewbin.get_by_name('out').link(quadmix) - - # # increment grid position - # place[0] += 1 - # if place[0] >= grid[0]: - # place[1] += 1 - # place[0] = 0 - - # def createDistributor(self, videosource, name): - # """create a simple ×2 distributor""" - # distributor = Gst.parse_bin_from_description(""" - # tee name=t - # t. ! queue name=a - # t. ! queue name=b - # """, False) - - # # set a name and add to pipeline - # distributor.set_name('distributor({0})'.format(name)) - # self.pipeline.add(distributor) - - # # link input to the tee - # videosource.link(distributor.get_by_name('t')) - # return distributor - - # def createDummyCamSources(self): - # """create test-video-sources from files or urls""" - - # # TODO make configurable - # uris = ('file:///home/peter/122.mp4', 'file:///home/peter/10025.mp4',) - # for idx, uri in enumerate(uris): - # # create a bin for a simulated camera input - # # force the input resolution to 1024x576 because that way the following elements - # # in the pipeline cam know the size even if the file is not yet loaded. the quadmixer - # # is not resize-capable - # camberabin = Gst.parse_bin_from_description(""" - # uridecodebin name=input - # input. ! videoconvert ! videoscale ! videorate ! video/x-raw,width=1024,height=576,framerate=25/1 ! identity name=video_src - # input. ! audioconvert name=audio_src - # """, False) - - # # set name and uri - # camberabin.set_name('dummy-camberabin({0})'.format(uri)) - # camberabin.get_by_name('input').set_property('uri', uri) - - # # add to pipeline and pass the bin upstream - # self.pipeline.add(camberabin) - # yield camberabin - - - # def createCamSources(self): - # """create real-video-sources from the bmd-drivers""" - - # # TODO make number of installed cams configurable - # for cam in range(2): - # # create a bin for camera input - # camberabin = Gst.parse_bin_from_description(""" - # decklinksrc name=input input=sdi input-mode=1080p25 - # input. ! videoconvert ! videoscale ! videorate ! video/x-raw,width=1920,height=1080,framerate=25/1 ! identity name=video_src - # input. ! audioconvert name=audio_src - # """, False) - - # # set name and subdevice - # camberabin.set_name('camberabin({0})'.format(cam)) - # camberabin.get_by_name('input').set_property('subdevice', cam) - - # # add to pipeline and pass the bin upstream - # self.pipeline.add(camberabin) - # yield camberabin - - - - - ### below are access-methods for the ControlServer - @controlServerEntrypoint - def status(self): - """System Status Query""" - raise NotImplementedError("status command is not implemented yet") - - @controlServerEntrypoint - def numAudioSources(self): - """return number of available audio sources""" - raise NotImplementedError("audio is not implemented yet") - - - @controlServerEntrypoint - def switchAudio(self, audiosource): - """switch audio to the selected audio""" - idx = int(audiosource) - if idx >= len(self.audionames): - return 'unknown audio-source: %s' % (audiosource) - - self.log.info("switching mixer to audio-source %u", idx) - self.audiomixer.set_active(idx) - - - - @controlServerEntrypoint - def numVideoSources(self): - """return number of available video sources""" - livevideo = self.pipeline.get_by_name('livevideo') - return str(len(self.videonames)) - - - @controlServerEntrypoint - def switchVideo(self, videosource): - """switch video to the selected video""" - idx = int(videosource) - if idx >= len(self.videonames): - return 'unknown video-source: %s' % (videosource) - - self.log.info("switching mixer to video-source %u", idx) - self.quadmixer.set_active(idx) - self.videomixer.set_active(idx) - - - @controlServerEntrypoint - def fadeVideo(self, videosource): - """fade video to the selected video""" - raise NotImplementedError("fade command is not implemented yet") - - - @controlServerEntrypoint - def setPipVideo(self, videosource): - """switch video-source in the PIP to the selected video""" - raise NotImplementedError("pip commands are not implemented yet") - - - @controlServerEntrypoint - def fadePipVideo(self, videosource): - """fade video-source in the PIP to the selected video""" - raise NotImplementedError("pip commands are not implemented yet") - - - class PipPlacements: - """enumeration of possible PIP-Placements""" - TopLeft, TopRight, BottomLeft, BottomRight = range(4) - - - @controlServerEntrypoint - def setPipPlacement(self, placement): - """place PIP in the selected position""" - assert(isinstance(placement, PipPlacements)) - raise NotImplementedError("pip commands are not implemented yet") + vsources = [] + vmirrors = [] + def __init__(self): + # self.log.debug('Creating A/V-Mixer') + # self.videomixer = VideoMix() + # self.add(self.videomixer) - @controlServerEntrypoint - def setPipStatus(self, enabled): - """show or hide PIP""" - raise NotImplementedError("pip commands are not implemented yet") + # self.audiomixer = AudioMix() + # self.add(self.audiomixer) + caps = Config.get('mix', 'videocaps') + self.log.info('Video-Caps configured to: %s', caps) - @controlServerEntrypoint - def fadePipStatus(self, enabled): - """fade PIP in our out""" - raise NotImplementedError("pip commands are not implemented yet") + for idx, name in enumerate(Config.getlist('sources', 'video')): + port = 10000 + idx + self.log.info('Creating Video-Source %s at tcp-port %u', name, port) + source = VideoSrc(name, port, caps) + self.vsources.append(source) - class StreamContents: - """enumeration of possible PIP-Placements""" - Live, Pause, NoStream = range(3) + port = 13000 + idx + self.log.info('Creating Mirror-Output for Video-Source %s at tcp-port %u', name, port) - @controlServerEntrypoint - def selectStreamContent(self, content): - """switch the livestream-content between selected mixer output, pause-image or nostream-imag""" - assert(isinstance(content, StreamContents)) - raise NotImplementedError("pause/nostream switching is not implemented yet") + mirror = VideoSrcMirror(name, port, caps) + self.vmirrors.append(mirror) |