204 lines
7.3 KiB
C++
204 lines
7.3 KiB
C++
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//----------------------------------------------------------------------------//
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// //
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// ozz-animation is hosted at http://github.com/guillaumeblanc/ozz-animation //
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// and distributed under the MIT License (MIT). //
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// //
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// Copyright (c) Guillaume Blanc //
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// //
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// Permission is hereby granted, free of charge, to any person obtaining a //
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// copy of this software and associated documentation files (the "Software"), //
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// to deal in the Software without restriction, including without limitation //
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// the rights to use, copy, modify, merge, publish, distribute, sublicense, //
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// and/or sell copies of the Software, and to permit persons to whom the //
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// Software is furnished to do so, subject to the following conditions: //
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// //
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// The above copyright notice and this permission notice shall be included in //
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// all copies or substantial portions of the Software. //
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// //
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR //
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, //
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL //
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER //
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING //
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER //
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// DEALINGS IN THE SOFTWARE. //
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// //
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//----------------------------------------------------------------------------//
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#include "ozz/animation/runtime/animation.h"
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#include <cassert>
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#include <cstring>
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#include "ozz/base/io/archive.h"
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#include "ozz/base/log.h"
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#include "ozz/base/maths/math_archive.h"
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#include "ozz/base/maths/math_ex.h"
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#include "ozz/base/memory/allocator.h"
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// Internal include file
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#define OZZ_INCLUDE_PRIVATE_HEADER // Allows to include private headers.
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#include "animation/runtime/animation_keyframe.h"
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namespace ozz {
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namespace animation {
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Animation::Animation() : duration_(0.f), num_tracks_(0), name_(nullptr) {}
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Animation::~Animation() { Deallocate(); }
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void Animation::Allocate(size_t _name_len, size_t _translation_count,
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size_t _rotation_count, size_t _scale_count) {
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// Distributes buffer memory while ensuring proper alignment (serves larger
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// alignment values first).
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static_assert(alignof(Float3Key) >= alignof(QuaternionKey) &&
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alignof(QuaternionKey) >= alignof(Float3Key) &&
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alignof(Float3Key) >= alignof(char),
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"Must serve larger alignment values first)");
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assert(name_ == nullptr && translations_.size() == 0 &&
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rotations_.size() == 0 && scales_.size() == 0);
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// Compute overall size and allocate a single buffer for all the data.
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const size_t buffer_size = (_name_len > 0 ? _name_len + 1 : 0) +
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_translation_count * sizeof(Float3Key) +
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_rotation_count * sizeof(QuaternionKey) +
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_scale_count * sizeof(Float3Key);
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span<char> buffer = {static_cast<char*>(memory::default_allocator()->Allocate(
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buffer_size, alignof(Float3Key))),
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buffer_size};
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// Fix up pointers. Serves larger alignment values first.
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translations_ = fill_span<Float3Key>(buffer, _translation_count);
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rotations_ = fill_span<QuaternionKey>(buffer, _rotation_count);
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scales_ = fill_span<Float3Key>(buffer, _scale_count);
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// Let name be nullptr if animation has no name. Allows to avoid allocating
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// this buffer in the constructor of empty animations.
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name_ =
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_name_len > 0 ? fill_span<char>(buffer, _name_len + 1).data() : nullptr;
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assert(buffer.empty() && "Whole buffer should be consumned");
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}
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void Animation::Deallocate() {
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memory::default_allocator()->Deallocate(
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as_writable_bytes(translations_).data());
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name_ = nullptr;
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translations_ = {};
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rotations_ = {};
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scales_ = {};
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}
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size_t Animation::size() const {
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const size_t size = sizeof(*this) + translations_.size_bytes() +
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rotations_.size_bytes() + scales_.size_bytes();
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return size;
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}
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void Animation::Save(ozz::io::OArchive& _archive) const {
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_archive << duration_;
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_archive << static_cast<int32_t>(num_tracks_);
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const size_t name_len = name_ ? std::strlen(name_) : 0;
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_archive << static_cast<int32_t>(name_len);
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const ptrdiff_t translation_count = translations_.size();
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_archive << static_cast<int32_t>(translation_count);
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const ptrdiff_t rotation_count = rotations_.size();
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_archive << static_cast<int32_t>(rotation_count);
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const ptrdiff_t scale_count = scales_.size();
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_archive << static_cast<int32_t>(scale_count);
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_archive << ozz::io::MakeArray(name_, name_len);
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for (const Float3Key& key : translations_) {
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_archive << key.ratio;
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_archive << key.track;
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_archive << ozz::io::MakeArray(key.value);
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}
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for (const QuaternionKey& key : rotations_) {
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_archive << key.ratio;
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uint16_t track = key.track;
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_archive << track;
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uint8_t largest = key.largest;
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_archive << largest;
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bool sign = key.sign;
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_archive << sign;
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_archive << ozz::io::MakeArray(key.value);
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}
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for (const Float3Key& key : scales_) {
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_archive << key.ratio;
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_archive << key.track;
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_archive << ozz::io::MakeArray(key.value);
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}
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}
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void Animation::Load(ozz::io::IArchive& _archive, uint32_t _version) {
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// Destroy animation in case it was already used before.
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Deallocate();
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duration_ = 0.f;
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num_tracks_ = 0;
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// No retro-compatibility with anterior versions.
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if (_version != 6) {
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log::Err() << "Unsupported Animation version " << _version << "."
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<< std::endl;
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return;
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}
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_archive >> duration_;
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int32_t num_tracks;
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_archive >> num_tracks;
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num_tracks_ = num_tracks;
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int32_t name_len;
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_archive >> name_len;
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int32_t translation_count;
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_archive >> translation_count;
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int32_t rotation_count;
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_archive >> rotation_count;
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int32_t scale_count;
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_archive >> scale_count;
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Allocate(name_len, translation_count, rotation_count, scale_count);
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if (name_) { // nullptr name_ is supported.
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_archive >> ozz::io::MakeArray(name_, name_len);
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name_[name_len] = 0;
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}
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for (Float3Key& key : translations_) {
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_archive >> key.ratio;
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_archive >> key.track;
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_archive >> ozz::io::MakeArray(key.value);
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}
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for (QuaternionKey& key : rotations_) {
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_archive >> key.ratio;
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uint16_t track;
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_archive >> track;
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key.track = track;
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uint8_t largest;
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_archive >> largest;
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key.largest = largest & 3;
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bool sign;
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_archive >> sign;
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key.sign = sign & 1;
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_archive >> ozz::io::MakeArray(key.value);
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}
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for (Float3Key& key : scales_) {
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_archive >> key.ratio;
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_archive >> key.track;
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_archive >> ozz::io::MakeArray(key.value);
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}
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}
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} // namespace animation
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} // namespace ozz
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