245 lines
8.8 KiB
Python
245 lines
8.8 KiB
Python
"""
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MonitorWidget: dual-player video display embedded in GTK4 via OpenGL.
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Two players share the same position via a Gtk.Stack:
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- "live" player: mpv reads UDP relay (low latency, always streaming)
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- "review" player: mpv reads local MKV file (full seek support)
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Driven by a single Timeline "changed" signal. Reads timeline.state directly:
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state.live=True → show live stack, live player streams
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state.live=False → show review stack, apply state.paused
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"""
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import ctypes
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import logging
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import gi
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gi.require_version("Gtk", "4.0")
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from gi.repository import Gtk, GLib
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from cht.ui.mpv import Player
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log = logging.getLogger(__name__)
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_libGL = ctypes.cdll.LoadLibrary("libGL.so.1")
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GL_DRAW_FRAMEBUFFER_BINDING = 0x8CA6
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def _make_gl_area(on_realize, on_unrealize, on_render):
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gl_area = Gtk.GLArea()
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gl_area.set_hexpand(True)
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gl_area.set_vexpand(True)
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gl_area.set_auto_render(False)
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gl_area.set_has_depth_buffer(False)
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gl_area.set_has_stencil_buffer(False)
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gl_area.connect("realize", on_realize)
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gl_area.connect("unrealize", on_unrealize)
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gl_area.connect("render", on_render)
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return gl_area
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class MonitorWidget(Gtk.Box):
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"""Dual-player mpv display, driven by Timeline "changed" signal."""
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def __init__(self, timeline, **kwargs):
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super().__init__(orientation=Gtk.Orientation.VERTICAL, **kwargs)
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self._timeline = timeline
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self._live_source_url = None
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self._recording_path = None
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self._live_player = None
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self._live_loaded = False
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self._review_player = None
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self._scrub_offset = 0.0 # global offset of the loaded scrub source
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self._scrub_active = False # True when scrub source is loaded
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self._stack = Gtk.Stack()
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self._stack.set_hexpand(True)
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self._stack.set_vexpand(True)
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self._stack.set_transition_type(Gtk.StackTransitionType.NONE)
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self._live_gl = _make_gl_area(
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self._on_live_realize, self._on_live_unrealize, self._on_live_render,
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)
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self._stack.add_named(self._live_gl, "live")
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self._review_gl = _make_gl_area(
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self._on_review_realize, self._on_review_unrealize, self._on_review_render,
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)
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self._stack.add_named(self._review_gl, "review")
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self.append(self._stack)
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timeline.connect("changed", self._on_changed)
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GLib.timeout_add(500, self._sync_cursor_from_player)
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log.info("MonitorWidget initialized")
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# -- Public API --
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def set_live_source(self, url):
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self._live_source_url = url
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log.info("Live source: %s", url)
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if self._live_player and not self._live_loaded:
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self._live_player.load_live(url)
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self._live_player.play()
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self._live_loaded = True
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def set_recording(self, path):
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self._recording_path = path
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log.info("Recording path: %s", path)
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def set_scrub_source(self, proxy_path, global_offset=0.0):
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"""Load a proxy file for frame-accurate scrubbing."""
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self._recording_path = proxy_path
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self._scrub_offset = global_offset
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self._scrub_active = True
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if self._review_player:
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self._review_player.load_at(proxy_path, 0, pause=True, hr_seek=True)
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self._stack.set_visible_child_name("review")
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log.info("Scrub source: %s (offset %.1fs)", proxy_path, global_offset)
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def scrub_to(self, seconds):
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"""Seek the review player to an exact frame (for scrub bar dragging)."""
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if self._review_player:
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self._review_player.show_frame_at(seconds)
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def get_live_position(self):
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"""Return the live player's current time_pos, or None."""
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if self._live_player:
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return self._live_player.time_pos
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return None
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def screenshot(self, path):
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if self._timeline.state.live and self._live_player:
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self._live_player.screenshot(path)
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elif self._review_player:
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self._review_player.screenshot(path)
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def reset(self):
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"""Reset for session transition — keep players alive, just unload content."""
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log.info("Resetting monitor")
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self._live_source_url = None
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self._recording_path = None
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self._live_loaded = False
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self._scrub_active = False
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self._scrub_offset = 0.0
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if self._live_player:
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self._live_player.command("stop")
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if self._review_player:
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self._review_player.command("stop")
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self._stack.set_visible_child_name("live")
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def stop(self):
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"""Full teardown — terminates mpv players. Only call on app exit."""
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log.info("Stopping monitor")
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if self._live_player:
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self._live_player.terminate()
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self._live_player = None
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self._live_loaded = False
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if self._review_player:
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self._review_player.terminate()
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self._review_player = None
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# -- Live GLArea --
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def _on_live_realize(self, gl_area):
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gl_area.make_current()
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self._live_player = Player()
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self._live_player.init_gl(
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update_callback=lambda: GLib.idle_add(self._live_gl.queue_render, priority=GLib.PRIORITY_HIGH)
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)
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log.info("Live player created")
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if self._live_source_url and not self._live_loaded:
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self._live_player.load_live(self._live_source_url)
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self._live_player.play()
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self._live_loaded = True
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def _on_live_unrealize(self, gl_area):
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if self._live_player:
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self._live_player.terminate()
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self._live_player = None
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self._live_loaded = False
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def _on_live_render(self, gl_area, _ctx):
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if not self._live_player or not self._live_loaded:
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return True
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fbo = ctypes.c_int(0)
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_libGL.glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, ctypes.byref(fbo))
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self._live_player.render(fbo.value, gl_area.get_width(), gl_area.get_height())
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return True
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# -- Review GLArea --
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def _on_review_realize(self, gl_area):
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gl_area.make_current()
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self._review_player = Player()
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self._review_player.init_gl(
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update_callback=lambda: GLib.idle_add(self._review_gl.queue_render, priority=GLib.PRIORITY_HIGH)
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)
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log.info("Review player created")
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def _on_review_unrealize(self, gl_area):
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if self._review_player:
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self._review_player.terminate()
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self._review_player = None
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def _on_review_render(self, gl_area, _ctx):
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if not self._review_player:
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return True
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fbo = ctypes.c_int(0)
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_libGL.glGetIntegerv(GL_DRAW_FRAMEBUFFER_BINDING, ctypes.byref(fbo))
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self._review_player.render(fbo.value, gl_area.get_width(), gl_area.get_height())
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return True
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# -- Timeline response --
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def _on_changed(self, timeline):
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s = timeline.state
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current = self._stack.get_visible_child_name()
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if s.live:
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self._scrub_active = False
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# Ensure live player is loaded and playing
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if self._live_player and not self._live_loaded and self._live_source_url:
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self._live_player.load_live(self._live_source_url)
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self._live_player.play()
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self._live_loaded = True
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elif self._live_player and self._live_loaded:
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self._live_player.play()
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if current != "live":
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self._stack.set_visible_child_name("live")
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else:
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# Scrub / review mode
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if self._scrub_active:
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# Scrub mode: driven directly by scrub_to(), not by timeline
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if current != "review":
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self._stack.set_visible_child_name("review")
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return
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elif current == "live":
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# Transitioning from live to scrub: just switch stack.
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# Don't auto-load the growing MKV — user picks a segment via scrub bar.
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self._stack.set_visible_child_name("review")
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else:
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# Already in review (non-scrub): seek if cursor moved
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if self._review_player:
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player_pos = self._review_player.time_pos or 0
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if abs(s.cursor - player_pos) > 1.0:
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self._review_player.seek(s.cursor)
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if s.paused:
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self._review_player.pause()
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else:
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self._review_player.play()
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def _sync_cursor_from_player(self):
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s = self._timeline.state
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if self._scrub_active:
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# Scrub mode: don't sync cursor from player — scrub bar drives cursor
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return True
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if not s.live and not s.paused and self._review_player:
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pos = self._review_player.time_pos
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if pos is not None and pos > 0:
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self._timeline.set_cursor(pos)
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# Live mode: cursor driven by tick_live()
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return True
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