refactor(node): switch oaknode to refcounted value handles, migrate consumers

- all 15 OakNode* handle types become neutral by-value structs
  {ctx, addref, release, abi_version}; shared box in
  src/node/c_api/nodehandle.h with owns flag (borrowed accessors
  return non-owning boxes; graph insertion flips owns off)
- oaktimeline/oaktask/oakrender call sites and their own public
  headers migrated to value handles; identity comparisons in
  timeline/task now compare native pointers
- regressions green: oaknode 96, oaktimeline 117, oaktask 106,
  oakrender 44, oakcommon 193, oakcodec 18, oakaudio 36
This commit is contained in:
2026-08-07 17:20:42 +08:00
parent 295ea1bfe5
commit 67176281d9
87 changed files with 4499 additions and 3431 deletions
+134 -124
View File
@@ -35,13 +35,15 @@ extern "C" {
* @file node.h
* @brief C ABI for olive::Node (src/node/src/node.h).
*
* The handle IS the C++ object pointer (M3 handle convention 3): an
* OakNodeNode is a reinterpreted olive::Node, no wrapper allocation.
* Handles borrowed from a graph become invalid when the owning project or
* node is destroyed. Owned handles (from oaknode_factory_create_from_id()
* or oaknode_node_create_copy()) must be released with
* oaknode_node_free() while still orphaned; once a node lives in a project
* graph its lifetime belongs to the graph.
* Handles are by-value reference-counted structs (see
* include/common/handle.h): every OakNodeNode carries ctx/addref/release/
* abi_version and behaves like a shared_ptr at the ABI level. Factory
* functions return a handle with reference count 1; release it with
* oaknode_node_free(). Handles borrowed from a graph only release the
* handle itself when freed; once a node lives in a project graph its
* lifetime belongs to the graph (the implementation flips ownership
* internally), and borrowed handles become invalid when the owning project
* or node is destroyed.
*
* Parameter values cross the boundary as the POD oaknode_value; the
* meaningful fields depend on its type (oaknode_value_type). String-typed
@@ -96,9 +98,21 @@ typedef struct oaknode_value {
} oaknode_value;
/**
* @brief Opaque node handle (olive::Node).
* @brief Reference-counted handle to a node (olive::Node).
*
* The object never leaves the library that created it; every external
* reference is one of these handles. Semantics are shared_ptr-like:
* init/factory functions return a handle with reference count 1,
* addref(ctx) takes another reference, release(ctx) drops one; release a
* handle with oaknode_node_free(). Borrowed handles into graph-owned
* objects only release the handle itself.
*/
typedef struct OakNodeNode OakNodeNode;
typedef struct OakNodeNode {
void *ctx; /**< Opaque pointer to the reference-counted object. */
void (*addref)(void *ctx); /**< Atomically increments the count. */
void (*release)(void *ctx); /**< Decrements the count, destroys at 0. */
uint32_t abi_version; /**< OAKNODE_ABI_VERSION. */
} OakNodeNode;
/* Re-declared here so node.h is self-contained; see node/project.h. */
typedef struct OakNodeProject OakNodeProject;
@@ -141,26 +155,26 @@ int oaknode_debug_alive_count(void);
* @return Required buffer size in bytes including the terminating NUL
* (non-negative), or a negative OAKNODE_E_* error code.
*/
int oaknode_node_get_id(const OakNodeNode *node, char *buf, int buf_size);
int oaknode_node_get_id(OakNodeNode node, char *buf, int buf_size);
/**
* @brief The node's display name (Node::name()). Two-stage getter,
* same return convention as oaknode_node_get_id().
*/
int oaknode_node_get_name(const OakNodeNode *node, char *buf, int buf_size);
int oaknode_node_get_name(OakNodeNode node, char *buf, int buf_size);
/**
* @brief The node's user label (Node::get_label()). Two-stage getter,
* same return convention as oaknode_node_get_id().
*/
int oaknode_node_get_label(const OakNodeNode *node, char *buf, int buf_size);
int oaknode_node_get_label(OakNodeNode node, char *buf, int buf_size);
/**
* @brief Set the node's user label directly (Node::set_label(), live).
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_set_label(OakNodeNode *node, const char *label);
int oaknode_node_set_label(OakNodeNode node, const char *label);
/**
* @brief Create a label-change command (olive::NodeRenameCommand).
@@ -170,7 +184,7 @@ int oaknode_node_set_label(OakNodeNode *node, const char *label);
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_set_label_undoable(OakNodeNode *node, const char *label,
int oaknode_node_set_label_undoable(OakNodeNode node, const char *label,
OakUndoCommand *out_command);
/**
@@ -181,21 +195,21 @@ int oaknode_node_set_label_undoable(OakNodeNode *node, const char *label,
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_get_override_color(const OakNodeNode *node, int *out_value);
int oaknode_node_get_override_color(OakNodeNode node, int *out_value);
/**
* @brief Set the override color index directly (-1 = none; live).
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_set_override_color(OakNodeNode *node, int index);
int oaknode_node_set_override_color(OakNodeNode node, int index);
/**
* @brief Create an override-color command (olive::NodeOverrideColorCommand).
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_set_override_color_undoable(OakNodeNode *node, int index,
int oaknode_node_set_override_color_undoable(OakNodeNode node, int index,
OakUndoCommand *out_command);
/**
@@ -204,14 +218,14 @@ int oaknode_node_set_override_color_undoable(OakNodeNode *node, int index,
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_is_enabled(const OakNodeNode *node, int *out_value);
int oaknode_node_is_enabled(OakNodeNode node, int *out_value);
/**
* @brief Set the node's enabled state directly (live).
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_set_enabled(OakNodeNode *node, int enabled);
int oaknode_node_set_enabled(OakNodeNode node, int enabled);
/**
* @brief Create an enabled-state command
@@ -219,7 +233,7 @@ int oaknode_node_set_enabled(OakNodeNode *node, int enabled);
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_set_enabled_undoable(OakNodeNode *node, int enabled,
int oaknode_node_set_enabled_undoable(OakNodeNode node, int enabled,
OakUndoCommand *out_command);
/* ---- Input introspection ------------------------------------------------ */
@@ -230,13 +244,13 @@ int oaknode_node_set_enabled_undoable(OakNodeNode *node, int enabled,
*
* @return OAKNODE_OK or a negative OAKNODE_E_* error code.
*/
int oaknode_node_input_count(const OakNodeNode *node, int *out_count);
int oaknode_node_input_count(OakNodeNode node, int *out_count);
/**
* @brief The input id at `index` (Node::inputs()). Two-stage getter;
* returns OAKNODE_E_NOT_FOUND for an out-of-range index.
*/
int oaknode_node_input_id(const OakNodeNode *node, int index, char *buf,
int oaknode_node_input_id(OakNodeNode node, int index, char *buf,
int buf_size);
/**
@@ -244,38 +258,39 @@ int oaknode_node_input_id(const OakNodeNode *node, int index, char *buf,
* pinned mapping on oaknode_value_type). OAKNODE_E_NOT_FOUND for an
* unknown input id.
*/
int oaknode_node_input_get_type(const OakNodeNode *node, const char *input_id,
int oaknode_node_input_get_type(OakNodeNode node, const char *input_id,
int *out_type);
/**
* @brief 1 if the input currently has a connected edge
* (Node::is_input_connected()). OAKNODE_E_NOT_FOUND for an unknown id.
*/
int oaknode_node_input_is_connected(const OakNodeNode *node,
const char *input_id, int *out_value);
int oaknode_node_input_is_connected(OakNodeNode node, const char *input_id,
int *out_value);
/**
* @brief 1 if the input accepts connections (Node::is_input_connectable()).
* OAKNODE_E_NOT_FOUND for an unknown id.
*/
int oaknode_node_input_is_connectable(const OakNodeNode *node,
const char *input_id, int *out_value);
int oaknode_node_input_is_connectable(OakNodeNode node, const char *input_id,
int *out_value);
/**
* @brief The human-readable name of the input (Node::get_input_name()).
* Two-stage getter; OAKNODE_E_NOT_FOUND for an unknown id.
*/
int oaknode_node_get_input_name(const OakNodeNode *node, const char *input_id,
int oaknode_node_get_input_name(OakNodeNode node, const char *input_id,
char *buf, int buf_size);
/**
* @brief The node feeding this input, or NULL when not connected
* (Node::get_connected_output(), element -1). `out_node` receives a
* borrowed handle. OAKNODE_E_NOT_FOUND for an unknown input id.
* @brief The node feeding this input (Node::get_connected_output(),
* element -1). `out_node` receives a borrowed handle (empty, ctx == NULL,
* when not connected; releasing it only releases the handle).
* OAKNODE_E_NOT_FOUND for an unknown input id.
*/
int oaknode_node_input_get_connected_node(const OakNodeNode *node,
int oaknode_node_input_get_connected_node(OakNodeNode node,
const char *input_id,
OakNodeNode **out_node);
OakNodeNode *out_node);
/* ---- Parameter access ----------------------------------------------------- */
@@ -288,7 +303,7 @@ int oaknode_node_input_get_connected_node(const OakNodeNode *node,
* fail with OAKNODE_E_FAILED; an unknown input id fails with
* OAKNODE_E_NOT_FOUND.
*/
int oaknode_node_get_input(const OakNodeNode *node, const char *input_id,
int oaknode_node_get_input(OakNodeNode node, const char *input_id,
oaknode_value *out);
/**
@@ -298,7 +313,7 @@ int oaknode_node_get_input(const OakNodeNode *node, const char *input_id,
* `v->type` must match the input's declared type; OAKNODE_VALUE_STRING is
* rejected (use oaknode_node_set_input_string()).
*/
int oaknode_node_set_input(OakNodeNode *node, const char *input_id,
int oaknode_node_set_input(OakNodeNode node, const char *input_id,
const oaknode_value *v);
/**
@@ -308,27 +323,26 @@ int oaknode_node_set_input(OakNodeNode *node, const char *input_id,
*
* Same type rules as oaknode_node_set_input().
*/
int oaknode_node_set_input_undoable(OakNodeNode *node, const char *input_id,
int oaknode_node_set_input_undoable(OakNodeNode node, const char *input_id,
const oaknode_value *v,
OakUndoCommand *out_command);
/**
* @brief Read a string-family input's standard value. Two-stage getter.
*/
int oaknode_node_get_input_string(const OakNodeNode *node,
const char *input_id, char *buf,
int buf_size);
int oaknode_node_get_input_string(OakNodeNode node, const char *input_id,
char *buf, int buf_size);
/**
* @brief Write a string-family input's standard value directly (live).
*/
int oaknode_node_set_input_string(OakNodeNode *node, const char *input_id,
int oaknode_node_set_input_string(OakNodeNode node, const char *input_id,
const char *value);
/**
* @brief Create a set-standard-value command for a string-family input.
*/
int oaknode_node_set_input_string_undoable(OakNodeNode *node,
int oaknode_node_set_input_string_undoable(OakNodeNode node,
const char *input_id,
const char *value,
OakUndoCommand *out_command);
@@ -344,7 +358,7 @@ int oaknode_node_set_input_string_undoable(OakNodeNode *node,
* OAKNODE_E_STATE when the input is already connected or the nodes belong
* to different graphs.
*/
int oaknode_node_connect(OakNodeNode *output_node, OakNodeNode *input_node,
int oaknode_node_connect(OakNodeNode output_node, OakNodeNode input_node,
const char *input_id);
/**
@@ -353,8 +367,8 @@ int oaknode_node_connect(OakNodeNode *output_node, OakNodeNode *input_node,
* different-graph check (the command may legitimately be redone after
* graph changes).
*/
int oaknode_node_connect_undoable(OakNodeNode *output_node,
OakNodeNode *input_node,
int oaknode_node_connect_undoable(OakNodeNode output_node,
OakNodeNode input_node,
const char *input_id,
OakUndoCommand *out_command);
@@ -363,44 +377,43 @@ int oaknode_node_connect_undoable(OakNodeNode *output_node,
* (live, Node::disconnect_edge(), element -1). OAKNODE_E_NOT_FOUND when
* the input is unknown or not connected.
*/
int oaknode_node_disconnect(OakNodeNode *input_node, const char *input_id);
int oaknode_node_disconnect(OakNodeNode input_node, const char *input_id);
/**
* @brief Create an edge-remove command (olive::NodeEdgeRemoveCommand,
* element -1). OAKNODE_E_NOT_FOUND when not connected.
*/
int oaknode_node_disconnect_undoable(OakNodeNode *input_node,
int oaknode_node_disconnect_undoable(OakNodeNode input_node,
const char *input_id,
OakUndoCommand *out_command);
/**
* @brief Number of outgoing edges (Node::output_connections()).
*/
int oaknode_node_output_connection_count(const OakNodeNode *node,
int *out_count);
int oaknode_node_output_connection_count(OakNodeNode node, int *out_count);
/**
* @brief The node at the input end of outgoing edge `index`
* (borrowed handle). OAKNODE_E_NOT_FOUND for an out-of-range index.
* @brief The node at the input end of outgoing edge `index` (borrowed
* handle; releasing it only releases the handle). OAKNODE_E_NOT_FOUND for
* an out-of-range index.
*/
int oaknode_node_output_connection_node_at(const OakNodeNode *node, int index,
OakNodeNode **out_node);
int oaknode_node_output_connection_node_at(OakNodeNode node, int index,
OakNodeNode *out_node);
/**
* @brief The input id at the input end of outgoing edge `index`.
* Two-stage getter; OAKNODE_E_NOT_FOUND for an out-of-range index.
*/
int oaknode_node_output_connection_input_id_at(const OakNodeNode *node,
int index, char *buf,
int buf_size);
int oaknode_node_output_connection_input_id_at(OakNodeNode node, int index,
char *buf, int buf_size);
/**
* @brief The input element at the input end of outgoing edge `index`
* (-1 for non-array inputs). OAKNODE_E_NOT_FOUND for an out-of-range
* index.
*/
int oaknode_node_output_connection_element_at(const OakNodeNode *node,
int index, int *out_element);
int oaknode_node_output_connection_element_at(OakNodeNode node, int index,
int *out_element);
/* ---- Links --------------------------------------------------------------- */
@@ -409,73 +422,72 @@ int oaknode_node_output_connection_element_at(const OakNodeNode *node,
* receives 1 on success, 0 when the link was rejected (e.g. either node
* rejects links). `out_linked` may be NULL.
*/
int oaknode_node_link(OakNodeNode *a, OakNodeNode *b, int *out_linked);
int oaknode_node_link(OakNodeNode a, OakNodeNode b, int *out_linked);
/**
* @brief Unlink two nodes directly (live, Node::unlink()).
* `out_unlinked` receives 1 on success, 0 otherwise; may be NULL.
*/
int oaknode_node_unlink(OakNodeNode *a, OakNodeNode *b, int *out_unlinked);
int oaknode_node_unlink(OakNodeNode a, OakNodeNode b, int *out_unlinked);
/**
* @brief Create a link/unlink command (olive::NodeLinkCommand;
* `link` != 0 links, 0 unlinks).
*/
int oaknode_node_link_undoable(OakNodeNode *a, OakNodeNode *b, int link,
int oaknode_node_link_undoable(OakNodeNode a, OakNodeNode b, int link,
OakUndoCommand *out_command);
/**
* @brief 1 if the two nodes are linked (Node::are_linked()).
*/
int oaknode_node_are_linked(const OakNodeNode *a, const OakNodeNode *b,
int *out_value);
int oaknode_node_are_linked(OakNodeNode a, OakNodeNode b, int *out_value);
/**
* @brief Number of linked nodes (Node::links()).
*/
int oaknode_node_link_count(const OakNodeNode *node, int *out_count);
int oaknode_node_link_count(OakNodeNode node, int *out_count);
/**
* @brief The linked node at `index` (borrowed handle).
* OAKNODE_E_NOT_FOUND for an out-of-range index.
* @brief The linked node at `index` (borrowed handle; releasing it only
* releases the handle). OAKNODE_E_NOT_FOUND for an out-of-range index.
*/
int oaknode_node_link_at(const OakNodeNode *node, int index,
OakNodeNode **out_node);
int oaknode_node_link_at(OakNodeNode node, int index,
OakNodeNode *out_node);
/* ---- Context positions ---------------------------------------------------- */
/**
* @brief Number of context entries (Node::get_context_positions()).
*/
int oaknode_node_context_count(const OakNodeNode *node, int *out_count);
int oaknode_node_context_count(OakNodeNode node, int *out_count);
/**
* @brief The context node at `index` (borrowed handle).
* OAKNODE_E_NOT_FOUND for an out-of-range index.
* @brief The context node at `index` (borrowed handle; releasing it only
* releases the handle). OAKNODE_E_NOT_FOUND for an out-of-range index.
*/
int oaknode_node_context_node_at(const OakNodeNode *node, int index,
OakNodeNode **out_node);
int oaknode_node_context_node_at(OakNodeNode node, int index,
OakNodeNode *out_node);
/**
* @brief The node's position in `context` (any out pointer may be NULL).
* OAKNODE_E_NOT_FOUND when the context does not contain this node.
*/
int oaknode_node_get_context_position(const OakNodeNode *node,
OakNodeNode *context, double *out_x,
double *out_y, int *out_expanded);
int oaknode_node_get_context_position(OakNodeNode node, OakNodeNode context,
double *out_x, double *out_y,
int *out_expanded);
/**
* @brief Set the node's position in `context` directly (live,
* Node::set_node_position_in_context() + set_node_expanded_in_context()).
*/
int oaknode_node_set_context_position(OakNodeNode *node, OakNodeNode *context,
int oaknode_node_set_context_position(OakNodeNode node, OakNodeNode context,
double x, double y, int expanded);
/**
* @brief Create a set-position command (olive::NodeSetPositionCommand).
*/
int oaknode_node_set_context_position_undoable(OakNodeNode *node,
OakNodeNode *context, double x,
int oaknode_node_set_context_position_undoable(OakNodeNode node,
OakNodeNode context, double x,
double y, int expanded,
OakUndoCommand *out_command);
@@ -483,16 +495,17 @@ int oaknode_node_set_context_position_undoable(OakNodeNode *node,
* @brief Remove the node from `context` directly (live).
* OAKNODE_E_NOT_FOUND when not contained.
*/
int oaknode_node_remove_from_context(OakNodeNode *node, OakNodeNode *context);
int oaknode_node_remove_from_context(OakNodeNode node, OakNodeNode context);
/* ---- Lifetime --------------------------------------------------------------- */
/**
* @brief Create a standalone copy of the node (Node::copy()). The copy is
* NOT added to any graph; the caller owns it and must release it with
* oaknode_node_free() while it is still orphaned. Returns NULL for NULL.
* NOT added to any graph; the returned handle has reference count 1 and
* must be released with oaknode_node_free() while it is still orphaned.
* Returns an empty handle (ctx == NULL) for an empty handle or on failure.
*/
OakNodeNode *oaknode_node_create_copy(const OakNodeNode *node);
OakNodeNode oaknode_node_create_copy(OakNodeNode node);
/**
* @brief Copy a node inside its graph (Node::copy_node_in_graph()),
@@ -501,44 +514,44 @@ OakNodeNode *oaknode_node_create_copy(const OakNodeNode *node);
* `*out_command` receives an owned undo command handle (free with
* oakundo_command_free()). The copy is inserted into the graph only when
* the returned command is redone; treat it as owned (oaknode_node_free())
* until then. Returns NULL on failure.
* until then. Returns an empty handle (ctx == NULL) on failure.
*/
OakNodeNode *oaknode_node_copy_in_graph(OakNodeNode *node,
OakUndoCommand *out_command);
OakNodeNode oaknode_node_copy_in_graph(OakNodeNode node,
OakUndoCommand *out_command);
/**
* @brief Get the project this node belongs to (borrowed). *out may be
* NULL if the node is orphaned.
* @brief Get the project this node belongs to. `out` receives a borrowed
* handle (empty, ctx == NULL, if the node is orphaned; releasing it only
* releases the handle).
*/
int oaknode_node_get_project(const OakNodeNode *node,
OakNodeProject **out);
int oaknode_node_get_project(OakNodeNode node, OakNodeProject *out);
/**
* @brief Insert/remove an element in an input array (live,
* Node::input_array_insert/remove()). OAKNODE_E_NOT_FOUND for an
* unknown input id.
*/
int oaknode_node_input_array_insert(OakNodeNode *node,
const char *input_id, int index);
int oaknode_node_input_array_remove(OakNodeNode *node,
const char *input_id, int index);
int oaknode_node_input_array_insert(OakNodeNode node, const char *input_id,
int index);
int oaknode_node_input_array_remove(OakNodeNode node, const char *input_id,
int index);
/**
* @brief Element-aware variants of oaknode_node_connect()/disconnect()
* (NodeInput element != -1, e.g. Sequence's track_in_N array inputs).
*/
int oaknode_node_connect_element(OakNodeNode *output_node,
OakNodeNode *input_node,
int oaknode_node_connect_element(OakNodeNode output_node,
OakNodeNode input_node,
const char *input_id, int element);
int oaknode_node_disconnect_element(OakNodeNode *input_node,
int oaknode_node_disconnect_element(OakNodeNode input_node,
const char *input_id, int element);
/**
* @brief Create a command that adds a node to a project's graph
* (olive::NodeAddCommand). Owned; free with oakundo_command_free().
*/
OakUndoCommand oaknode_command_create_add_node(OakNodeProject *graph,
OakNodeNode *node);
OakUndoCommand oaknode_command_create_add_node(OakNodeProject graph,
OakNodeNode node);
/**
* @brief Create a command that sets a node's position in a context and
@@ -546,22 +559,20 @@ OakUndoCommand oaknode_command_create_add_node(OakNodeProject *graph,
* (olive::NodeSetPositionAndDependenciesRecursivelyCommand). Owned.
*/
OakUndoCommand oaknode_command_create_set_position_recursive(
OakNodeNode *node, OakNodeNode *context, double x, double y);
OakNodeNode node, OakNodeNode context, double x, double y);
/**
* @brief Borrowed marker list / work area of a viewer node. *out is NULL
* when the node is not a viewer (or for NULL input).
* when the node is not a viewer (or for an empty handle).
*/
int oaknode_node_get_markers(const OakNodeNode *node,
OakNodeMarkerList **out);
int oaknode_node_get_work_area(const OakNodeNode *node,
OakNodeWorkArea **out);
int oaknode_node_get_markers(OakNodeNode node, OakNodeMarkerList **out);
int oaknode_node_get_work_area(OakNodeNode node, OakNodeWorkArea **out);
/**
* @brief Borrowed video frame cache of a node (NULL when the node has
* none or for NULL input).
* none or for an empty handle).
*/
int oaknode_node_get_video_frame_cache(const OakNodeNode *node,
int oaknode_node_get_video_frame_cache(OakNodeNode node,
OakNodeFrameCache **out);
/**
@@ -569,7 +580,7 @@ int oaknode_node_get_video_frame_cache(const OakNodeNode *node,
* (Node::copy_inputs()). include_connections != 0 also copies
* input connections.
*/
int oaknode_node_copy_inputs(OakNodeNode *dst, const OakNodeNode *src,
int oaknode_node_copy_inputs(OakNodeNode dst, OakNodeNode src,
int include_connections);
/**
@@ -577,8 +588,7 @@ int oaknode_node_copy_inputs(OakNodeNode *dst, const OakNodeNode *src,
* (Node::set_value_hint_for_input() with a single texture type
* and a Track::Reference string).
*/
int oaknode_node_set_value_hint_track(OakNodeNode *node,
const char *input_id,
int oaknode_node_set_value_hint_track(OakNodeNode node, const char *input_id,
int track_type, int track_index);
/**
@@ -586,37 +596,37 @@ int oaknode_node_set_value_hint_track(OakNodeNode *node,
* set_video_params/set_audio_params, stream index 0). `params` is an
* oakcommon handle (video) or borrowed oakcore handle (audio).
*/
int oaknode_viewer_set_video_params(OakNodeNode *viewer,
int oaknode_viewer_set_video_params(OakNodeNode viewer,
const OakVideoParams *params);
int oaknode_viewer_set_audio_params(OakNodeNode *viewer,
int oaknode_viewer_set_audio_params(OakNodeNode viewer,
const OakAudioParams *params);
/**
* @brief Find a footage node upstream of this node's inputs
* (Node::find_input_nodes<Footage>(), first match). *out is a
* borrowed handle or NULL when none.
* (Node::find_input_nodes<Footage>(), first match). `out` receives
* a borrowed handle (empty, ctx == NULL, when none; releasing it
* only releases the handle).
*/
int oaknode_node_find_input_footage(const OakNodeNode *node,
OakNodeFootage **out);
int oaknode_node_find_input_footage(OakNodeNode node, OakNodeFootage *out);
/**
* @brief Create a command that removes a node from its graph together
* with its exclusive dependencies and disconnects its edges
* (NodeRemoveWithExclusiveDependenciesAndDisconnect).
*
* Owned command handle; free with oakundo_command_free(). Returns NULL
* on failure.
* Owned command handle; free with oakundo_command_free(). Returns an
* empty handle (ctx == NULL) on failure.
*/
OakUndoCommand oaknode_command_create_remove_node(OakNodeNode *node);
OakUndoCommand oaknode_command_create_remove_node(OakNodeNode node);
/**
* @brief Destroy an OWNED node immediately (C++ delete). NULL is a no-op.
* @brief Release one reference to a node handle.
*
* ONLY valid for owned handles that were never added to a graph: the
* products of oaknode_factory_create_from_id(),
* oaknode_node_create_copy() and oaknode_group_create() while still
* orphaned. Freeing a graph-owned node, or freeing twice, is a
* use-after-free.
* Convenience wrapper around handle.release(handle.ctx): the underlying
* node is destroyed only when the last reference of an OWNED handle is
* released; releasing a borrowed handle into a graph-owned object only
* destroys the handle itself. NULL handle or NULL ctx is a no-op; clears
* `node->ctx` after releasing.
*/
void oaknode_node_free(OakNodeNode *node);