159 lines
4.4 KiB
C++
159 lines
4.4 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2022 Olive Team
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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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#include "hashtraverser.h"
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#include <QUuid>
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#include "common/filefunctions.h"
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namespace olive {
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#define super NodeTraverser
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HashTraverser::HashTraverser() :
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hash_(QCryptographicHash::Sha1) // Appears to be the fastest hashing algorithm
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{
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}
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QByteArray HashTraverser::GetHash(const Node *node, const Node::ValueHint &hint, const VideoParams ¶ms, const TimeRange &range)
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{
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// Reset hash
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hash_.reset();
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texture_ids_.clear();
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// Set params throughout traverser
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SetCacheVideoParams(params);
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// Embed video parameters into this hash
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Hash(params.effective_width());
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Hash(params.effective_height());
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Hash(params.format());
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Hash(params.interlacing());
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//Hash(reference);
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// Our overrides will generate a hash from this
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NodeValueTable table = GenerateTable(node, hint, range);
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NodeValue final_value = GenerateRowValueElement(hint, NodeValue::kTexture, &table);
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HashNodeValue(final_value);
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// Return the hash
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return hash_.result();
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}
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void HashTraverser::ProcessVideoFootage(TexturePtr destination, const FootageJob &stream, const rational &input_time)
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{
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Hash(FileFunctions::GetUniqueFileIdentifier(stream.filename()));
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Hash(stream.loop_mode());
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Hash(stream.video_params().stream_index());
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Hash(stream.video_params().colorspace());
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Hash(stream.video_params().premultiplied_alpha());
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Hash(GetCacheVideoParams().divider());
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Hash(stream.video_params().video_type() == VideoParams::kVideoTypeStill ? 0 : input_time);
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Hash(stream.video_params().video_type());
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texture_ids_.insert(destination.get(), hash_.result());
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}
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void HashTraverser::ProcessAudioFootage(SampleBuffer &destination, const FootageJob &stream, const TimeRange &input_time)
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{
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}
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void HashTraverser::ProcessShader(TexturePtr destination, const Node *node, const TimeRange &range, const ShaderJob &job)
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{
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HashGenerateJob(node, &job);
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Hash(job.GetShaderID());
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Hash(job.GetIterativeInput());
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Hash(job.GetIterationCount());
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for (auto it=job.GetInterpolationMap().cbegin(); it!=job.GetInterpolationMap().cend(); it++) {
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Hash(it.key());
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Hash(it.value());
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}
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texture_ids_.insert(destination.get(), hash_.result());
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}
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void HashTraverser::ProcessColorTransform(TexturePtr destination, const Node *node, const ColorTransformJob &job)
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{
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Hash(job.GetColorProcessor()->id());
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texture_ids_.insert(destination.get(), hash_.result());
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}
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void HashTraverser::ProcessSamples(SampleBuffer &destination, const Node *node, const TimeRange &range, const SampleJob &job)
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{
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}
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void HashTraverser::ProcessFrameGeneration(TexturePtr destination, const Node *node, const GenerateJob &job)
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{
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HashGenerateJob(node, &job);
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texture_ids_.insert(destination.get(), hash_.result());
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}
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void HashTraverser::HashGenerateJob(const Node *node, const GenerateJob *job)
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{
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Hash(node->id());
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Hash(job->GetAlphaChannelRequired());
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for (auto it=job->GetValues().cbegin(); it!=job->GetValues().cend(); it++) {
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Hash(it.key());
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HashNodeValue(it.value());
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}
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}
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void HashTraverser::Hash(const QByteArray &array)
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{
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hash_.addData(array);
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}
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void HashTraverser::Hash(const QString &string)
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{
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hash_.addData(string.toUtf8());
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}
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void HashTraverser::HashNodeValue(const NodeValue &value)
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{
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NodeValue::Type value_type = value.type();
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if (value_type == NodeValue::kSamples || value_type == NodeValue::kTexture) {
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QByteArray id_for_buffer;
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if (value_type == NodeValue::kTexture) {
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TexturePtr texture = value.toTexture();
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id_for_buffer = texture_ids_.value(texture.get());
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}
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if (!id_for_buffer.isEmpty()) {
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Hash(id_for_buffer);
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}
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} else {
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Hash(NodeValue::ValueToBytes(value));
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}
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}
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template<typename T>
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void HashTraverser::Hash(T value)
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{
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hash_.addData(reinterpret_cast<const char*>(&value), sizeof(value));
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}
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}
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