Mike-Solar
caafac4203
- Waveform sync no longer treats uncached waveform regions as silence: the envelope extraction now reports a per-window validity mask and the correlation skips invalid windows on either side, improving accuracy for partially cached clips - Add stretch/speed sync: AudioWaveformSync::EstimateStretchAndOffset searches a playback-rate range plus offset, and a new timeline context action 'Synchronize by Waveform (Adjust Speed)' applies the estimated rate as a clip speed change (with undo) when plain offset alignment is inconclusive - Footage properties dialog gains a Source Start Time field so the value used by source-time sync can be viewed and edited manually instead of relying solely on auto-detected metadata; applied via an undo command, with Footage::ClearSourceStartTime() for removal - Regression tests for masked correlation, stretch estimation, the envelope validity mask, and source-start-time set/clear
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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Modifications Copyright (C) 2025 mikesolar
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#ifndef TIMELINEWIDGETWAVEFORMSYNC_H
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#define TIMELINEWIDGETWAVEFORMSYNC_H
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#include <QVector>
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#include "node/block/block.h"
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#include "olive/core/util/rational.h"
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#include "olive/core/util/timerange.h"
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namespace olive
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{
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class AudioWaveformCache;
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class ClipBlock;
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/**
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* @brief Data required to synchronize a clip using its cached audio waveform.
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*/
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struct WaveformSyncClip {
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ClipBlock *clip = nullptr;
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const AudioWaveformCache *waveform = nullptr;
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TimeRange media_range;
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int sample_rate = 0;
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};
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/**
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* @brief Helpers used by TimelineWidget for waveform-based clip synchronization.
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*
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* Kept in a separate unit so they can be exercised directly by unit tests.
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*/
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namespace TimelineWaveformSync
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{
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/**
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* @brief Fill @p out with waveform-sync metadata for @p block if it is usable.
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*
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* A clip is considered usable as long as at least a portion of its media range
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* has been validated in the waveform cache. Previously the whole range had to
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* be validated, which made the context-menu action unavailable for long clips.
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*/
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bool GetWaveformSyncClip(Block *block, WaveformSyncClip *out);
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/**
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* @brief Return all selected blocks that can be synchronized by waveform.
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*/
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QVector<WaveformSyncClip>
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GetSelectedWaveformSyncClips(const QVector<Block *> &blocks);
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/**
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* @brief Extract a peak envelope from the validated regions of a waveform cache.
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*
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* Windows that have not been cached yet are filled with zero so that every
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* envelope stays aligned to the same absolute timeline; when @p valid_mask is
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* provided it receives one flag per window marking whether the window was
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* actually cached, allowing the correlation to skip uncached regions instead
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* of treating them as silence.
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*/
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QVector<double> ExtractWaveformCacheEnvelope(const WaveformSyncClip &clip,
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int sample_rate,
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size_t window_samples,
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QVector<bool> *valid_mask = nullptr);
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} // namespace TimelineWaveformSync
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} // namespace olive
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#endif // TIMELINEWIDGETWAVEFORMSYNC_H
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