feat(app): multicam panel with live angle grid, switching, timeline enable

- New MulticamPanel: rows/cols angle grid with the current angle highlighted, click-to-switch, 1-9 switch-and-split and cmd-1-9 switch-only shortcuts (focused-panel routed), deferred switch queue during playback. - src/oakui/multicam.rs: clip->connected-sequence resolution, multicam state detection (selection then playhead fallbacks), per-angle frame requests rendered through the process backend into an LRU cache. - Timeline clip context menu Multi-Cam checkable item wired to oaktimeline::multicam enable/disable with undo. - Engine trait extended (real + mock); mock drives the real command path with synthesized angle frames.
2026-08-18 21:40:00 +08:00
parent cad1d93544
commit cf459d7e4c
132 changed files with 2276 additions and 422 deletions
@@ -0,0 +1,122 @@
+/***
+
+  Oak Video Editor - Non-Linear Video Editor
+  Copyright (C) 2026 Oak Team
+
+  This program is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  This program is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+***/
+
+#ifndef OAK_EDITOR_TIMELINE_WORKAREA_H
+#define OAK_EDITOR_TIMELINE_WORKAREA_H
+
+#include "common/xmlutils.h"
+#include "node/node.h"
+#include "timeline/error.h"
+#include "undo/undocommand.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief By-value handle to a timeline work area
+ * (olive::TimelineWorkArea).
+ *
+ * Borrowed handles are obtained via oaktimeline_workarea_of() and box a
+ * reference into the owning node; owning handles are created by
+ * oaktimeline_workarea_create(). Either way, release with
+ * oaktimeline_workarea_free() (or handle.release(handle.ctx)) when
+ * done — release destroys the work area only for owning handles.
+ */
+typedef struct OakTimelineWorkArea {
+	void *ctx; /**< Opaque pointer to the object's box. */
+	void (*addref)(void *ctx); /**< Atomically increments the box count. */
+	void (*release)(void *ctx); /**< Decrements the count, frees the box. */
+	uint32_t abi_version; /**< OAKTIMELINE_ABI_VERSION. */
+} OakTimelineWorkArea;
+
+/**
+ * @brief Create an owning handle to a new, default-constructed work
+ * area. Empty handle (ctx == NULL) on allocation failure.
+ */
+OakTimelineWorkArea oaktimeline_workarea_create(void);
+
+/**
+ * @brief Borrowed work area of a viewer node (sequence). Empty handle
+ * (ctx == NULL) for an empty node handle or when the node is not a
+ * viewer.
+ */
+OakTimelineWorkArea oaktimeline_workarea_of(OakNodeNode owner);
+
+/**
+ * @brief Release a work area handle (destroys the work area itself only
+ *        for owning handles). NULL / empty-handle no-op; clears w->ctx
+ *        after releasing.
+ */
+void oaktimeline_workarea_free(OakTimelineWorkArea *w);
+
+/**
+ * @brief Set enabled directly (live).
+ */
+int oaktimeline_workarea_set_enabled(OakTimelineWorkArea w, int enabled);
+
+/**
+ * @brief Read the work area state. Out params may individually be NULL.
+ */
+int oaktimeline_workarea_get(OakTimelineWorkArea w, int *in_num,
+							 int *in_den, int *out_num, int *out_den,
+							 int *enabled);
+
+/**
+ * @brief Set the range directly (live).
+ */
+int oaktimeline_workarea_set_range(OakTimelineWorkArea w, int in_num,
+								   int in_den, int out_num, int out_den);
+
+/**
+ * @brief Create a set-range command (olive::WorkareaSetRangeCommand).
+ * The old range must be supplied by the caller (facade knows what it
+ * changed from). Owned; free with oakundo_command_free().
+ */
+OakUndoCommand oaktimeline_workarea_set_range_command(
+	OakTimelineWorkArea w, int in_num, int in_den, int out_num,
+	int out_den, int old_in_num, int old_in_den, int old_out_num,
+	int old_out_den);
+
+/**
+ * @brief Create a set-enabled command (olive::WorkareaSetEnabledCommand).
+ */
+OakUndoCommand oaktimeline_workarea_set_enabled_command(
+	OakTimelineWorkArea w, int enabled);
+
+/**
+ * @brief The reset sentinel range (TimelineWorkArea::k_reset_in/out).
+ */
+int oaktimeline_workarea_reset(int *in_num, int *in_den, int *out_num,
+							   int *out_den);
+
+/**
+ * @brief Load/save through oakcommon XML handles. The reader must be
+ * positioned on the "workarea" element.
+ */
+int oaktimeline_workarea_load(OakTimelineWorkArea w, OakXmlReader reader);
+int oaktimeline_workarea_save(OakTimelineWorkArea w,
+							  OakXmlWriter writer);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //OAK_EDITOR_TIMELINE_WORKAREA_H