/* SPDX-License-Identifier: GPL-2.0-or-later
 * Copyright 2004 Blender Foundation. All rights reserved. */

#pragma once

/** \file
 * \ingroup sequencer
 */

#ifdef __cplusplus
extern "C" {
#endif

struct ImBuf;
struct ListBase;
struct Scene;
struct SeqEffectHandle;
struct SeqRenderData;
struct Sequence;

#define EARLY_NO_INPUT -1
#define EARLY_DO_EFFECT 0
#define EARLY_USE_INPUT_1 1
#define EARLY_USE_INPUT_2 2

/* mutable state for sequencer */
typedef struct SeqRenderState {
  struct LinkNode *scene_parents;
} SeqRenderState;

void seq_render_state_init(SeqRenderState *state);

struct ImBuf *seq_render_give_ibuf_seqbase(const struct SeqRenderData *context,
                                           float timeline_frame,
                                           int chan_shown,
                                           struct ListBase *channels,
                                           struct ListBase *seqbasep);
struct ImBuf *seq_render_effect_execute_threaded(struct SeqEffectHandle *sh,
                                                 const struct SeqRenderData *context,
                                                 struct Sequence *seq,
                                                 float timeline_frame,
                                                 float fac,
                                                 struct ImBuf *ibuf1,
                                                 struct ImBuf *ibuf2,
                                                 struct ImBuf *ibuf3);
void seq_imbuf_to_sequencer_space(struct Scene *scene, struct ImBuf *ibuf, bool make_float);
int seq_get_shown_sequences(const struct Scene *scene,
                            struct ListBase *channels,
                            struct ListBase *seqbase,
                            int timeline_frame,
                            int chanshown,
                            struct Sequence **r_seq_arr);
struct ImBuf *seq_render_strip(const struct SeqRenderData *context,
                               struct SeqRenderState *state,
                               struct Sequence *seq,
                               float timeline_frame);
struct ImBuf *seq_render_mask(const struct SeqRenderData *context,
                              struct Mask *mask,
                              float frame_index,
                              bool make_float);
void seq_imbuf_assign_spaces(struct Scene *scene, struct ImBuf *ibuf);

#ifdef __cplusplus
}
#endif
