45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "media/mp4/sync_sample_iterator.h"
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#include <algorithm>
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namespace media {
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namespace mp4 {
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SyncSampleIterator::SyncSampleIterator(const SyncSample& sync_sample)
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: sample_number_(1),
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sync_sample_vector_(sync_sample.sample_number),
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iterator_(sync_sample_vector_.begin()),
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is_empty_(iterator_ == sync_sample_vector_.end()) {
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}
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bool SyncSampleIterator::AdvanceSample() {
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if (iterator_ != sync_sample_vector_.end() && sample_number_ == *iterator_)
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++iterator_;
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++sample_number_;
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return true;
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}
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bool SyncSampleIterator::IsSyncSample() {
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// If the sync sample box is not present, every sample is a sync sample.
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if (is_empty_)
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return true;
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return iterator_ != sync_sample_vector_.end() && sample_number_ == *iterator_;
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}
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bool SyncSampleIterator::IsSyncSample(uint32 sample) {
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// If the sync sample box is not present, every sample is a sync sample.
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if (is_empty_)
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return true;
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return std::binary_search(sync_sample_vector_.begin(),
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sync_sample_vector_.end(), sample);
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}
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} // namespace mp4
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} // namespace media
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