35cab63eaf
This should make VSE code more readable and easier to understand from an outside perspective. The name was chosen to be `channel` rather than `channel_index` to keep things short and concise -- it should be clear based on the context whether we are talking about the strip's channel index (singular case, `Strip::channel` or `SeqTimelineChannel::index`) vs. the channel list (plural case, e.g. `Editing::channels`). Pull Request: https://projects.blender.org/blender/blender/pulls/138919
102 lines
2.6 KiB
C++
102 lines
2.6 KiB
C++
/* SPDX-FileCopyrightText: 2024 Blender Authors
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*
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* SPDX-License-Identifier: GPL-2.0-or-later */
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/** \file
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* \ingroup sequencer
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*/
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#include "DNA_sequence_types.h"
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#include "SEQ_channels.hh"
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#include "SEQ_relations.hh"
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#include "SEQ_render.hh"
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#include "SEQ_sequencer.hh"
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#include "SEQ_time.hh"
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#include "SEQ_utils.hh"
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#include "effects.hh"
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#include "render.hh"
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namespace blender::seq {
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/* No effect inputs for adjustment, we use #give_ibuf_seq. */
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static int num_inputs_adjustment()
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{
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return 0;
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}
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static StripEarlyOut early_out_adjustment(const Strip * /*strip*/, float /*fac*/)
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{
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return StripEarlyOut::NoInput;
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}
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static ImBuf *do_adjustment_impl(const RenderData *context, Strip *strip, float timeline_frame)
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{
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Editing *ed;
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ImBuf *i = nullptr;
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ed = context->scene->ed;
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ListBase *seqbasep = get_seqbase_by_strip(context->scene, strip);
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ListBase *channels = get_channels_by_strip(ed, strip);
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/* Clamp timeline_frame to strip range so it behaves as if it had "still frame" offset (last
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* frame is static after end of strip). This is how most strips behave. This way transition
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* effects that doesn't overlap or speed effect can't fail rendering outside of strip range. */
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timeline_frame = clamp_i(timeline_frame,
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time_left_handle_frame_get(context->scene, strip),
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time_right_handle_frame_get(context->scene, strip) - 1);
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if (strip->channel > 1) {
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i = seq_render_give_ibuf_seqbase(
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context, timeline_frame, strip->channel - 1, channels, seqbasep);
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}
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/* Found nothing? so let's work the way up the meta-strip stack, so
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* that it is possible to group a bunch of adjustment strips into
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* a meta-strip and have that work on everything below the meta-strip. */
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if (!i) {
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Strip *meta;
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meta = lookup_meta_by_strip(ed, strip);
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if (meta) {
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i = do_adjustment_impl(context, meta, timeline_frame);
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}
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}
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return i;
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}
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static ImBuf *do_adjustment(const RenderData *context,
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Strip *strip,
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float timeline_frame,
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float /*fac*/,
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ImBuf * /*ibuf1*/,
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ImBuf * /*ibuf2*/)
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{
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ImBuf *out;
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Editing *ed;
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ed = context->scene->ed;
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if (!ed) {
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return nullptr;
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}
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out = do_adjustment_impl(context, strip, timeline_frame);
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return out;
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}
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void adjustment_effect_get_handle(EffectHandle &rval)
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{
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rval.num_inputs = num_inputs_adjustment;
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rval.early_out = early_out_adjustment;
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rval.execute = do_adjustment;
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}
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} // namespace blender::seq
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