101 lines
3.3 KiB
Python
101 lines
3.3 KiB
Python
"""
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MonitorWidget: mpv-based live stream monitor embedded in GTK4.
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Uses libmpv's OpenGL render API + Gtk.GLArea for proper embedding.
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No X11 wid hacks — renders directly to a GL texture in the GTK layout.
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Works on both X11 and Wayland.
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"""
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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, Gdk
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from cht.ui.mpv import Player
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log = logging.getLogger(__name__)
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class MonitorWidget(Gtk.Box):
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"""Widget that embeds mpv video via OpenGL into the GTK4 layout."""
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def __init__(self, **kwargs):
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super().__init__(orientation=Gtk.Orientation.VERTICAL, **kwargs)
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self._player = None
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self._gl_area = Gtk.GLArea()
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self._gl_area.set_hexpand(True)
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self._gl_area.set_vexpand(True)
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self._gl_area.set_auto_render(False)
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self._gl_area.set_has_depth_buffer(False)
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self._gl_area.set_has_stencil_buffer(False)
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self._gl_area.connect("realize", self._on_realize)
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self._gl_area.connect("unrealize", self._on_unrealize)
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self._gl_area.connect("render", self._on_render)
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self.append(self._gl_area)
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log.info("MonitorWidget initialized (GLArea)")
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def _on_realize(self, gl_area):
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"""GL context is ready — initialize mpv's render context."""
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log.info("GLArea realized")
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gl_area.make_current()
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if gl_area.get_error():
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log.error("GLArea error: %s", gl_area.get_error())
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return
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def _on_unrealize(self, gl_area):
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"""Clean up mpv render context."""
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log.info("GLArea unrealized")
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if self._player:
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self._player.terminate()
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self._player = None
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def _on_render(self, gl_area, gl_context):
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"""Render mpv's current frame to the GLArea."""
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if not self._player:
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return True
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# Get the default FBO that GTK4 GLArea renders to
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fbo = gl_area.get_buffer() if hasattr(gl_area, 'get_buffer') else 0
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width = gl_area.get_width()
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height = gl_area.get_height()
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# GTK4 GLArea uses its own FBO, get it from GL state
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import ctypes
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fbo_id = ctypes.c_int(0)
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gl = ctypes.cdll.LoadLibrary("libGL.so.1")
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gl.glGetIntegerv(0x8CA6, ctypes.byref(fbo_id)) # GL_DRAW_FRAMEBUFFER_BINDING
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self._player.render(fbo_id.value, width, height)
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return True
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def _on_mpv_update(self):
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"""Called by mpv when a new frame is ready. Triggers re-render."""
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GLib.idle_add(self._gl_area.queue_render)
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def start_stream(self, source, record_path=None):
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"""Start playing from a URL and optionally record to disk.
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Args:
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source: TCP URL (tcp://...), file path, etc.
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record_path: if set, mpv dumps the raw stream to this file
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"""
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self._gl_area.make_current()
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self._player = Player(record_path=record_path)
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self._player.init_gl(update_callback=self._on_mpv_update)
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self._player.play(source)
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log.info("Monitor streaming from: %s (record=%s)", source, record_path)
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def stop(self):
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"""Stop playback and release mpv."""
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if self._player:
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log.info("Stopping monitor")
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self._player.terminate()
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self._player = None
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else:
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log.info("Monitor already stopped")
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