feat: add picture-in-picture support and enhance event emission in artplayerProxyCanvas

docs/uncompiled/artplayer-proxy-canvas/index.js

@@ -191,7 +191,7 @@ function artplayerProxyCanvas() {
                     ctx.drawImage(bitmap, 0, 0, canvas.width, canvas.height);
                     bitmap.close();
                 } else ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
-                art.emit("artplayerProxyCanvas:draw", ctx);
+                art.emit("artplayerProxyCanvas:draw", ctx, video);
             } catch (error) {
                 art.emit("artplayerProxyCanvas:error", error);
             }