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// Copyright 2017 The Draco Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#include "draco/animation/keyframe_animation.h"
#include "draco/animation/keyframe_animation_decoder.h"
#include "draco/animation/keyframe_animation_encoder.h"
#include "draco/core/draco_test_base.h"
#include "draco/core/draco_test_utils.h"
namespace draco {
class KeyframeAnimationEncodingTest : public ::testing::Test {
protected:
KeyframeAnimationEncodingTest() {}
bool CreateAndAddTimestamps(int32_t num_frames) {
timestamps_.resize(num_frames);
for (int i = 0; i < timestamps_.size(); ++i)
timestamps_[i] = static_cast<draco::KeyframeAnimation::TimestampType>(i);
return keyframe_animation_.SetTimestamps(timestamps_);
}
int32_t CreateAndAddAnimationData(int32_t num_frames,
uint32_t num_components) {
// Create and add animation data with.
animation_data_.resize(num_frames * num_components);
for (int i = 0; i < animation_data_.size(); ++i)
animation_data_[i] = static_cast<float>(i);
return keyframe_animation_.AddKeyframes(draco::DT_FLOAT32, num_components,
animation_data_);
}
template <int num_components_t>
void CompareAnimationData(const KeyframeAnimation &animation0,
const KeyframeAnimation &animation1,
bool quantized) {
ASSERT_EQ(animation0.num_frames(), animation1.num_frames());
ASSERT_EQ(animation0.num_animations(), animation1.num_animations());
if (quantized) {
// TODO(hemmer) : Add test for stable quantization.
// Quantization will result in slightly different values.
// Skip comparing values.
return;
}
// Compare time stamp.
const auto timestamp_att0 = animation0.timestamps();
const auto timestamp_att1 = animation0.timestamps();
for (int i = 0; i < animation0.num_frames(); ++i) {
std::array<float, 1> att_value0;
std::array<float, 1> att_value1;
ASSERT_TRUE((timestamp_att0->GetValue<float, 1>(
draco::AttributeValueIndex(i), &att_value0)));
ASSERT_TRUE((timestamp_att1->GetValue<float, 1>(
draco::AttributeValueIndex(i), &att_value1)));
ASSERT_FLOAT_EQ(att_value0[0], att_value1[0]);
}
for (int animation_id = 1; animation_id < animation0.num_animations();
++animation_id) {
// Compare keyframe data.
const auto keyframe_att0 = animation0.keyframes(animation_id);
const auto keyframe_att1 = animation1.keyframes(animation_id);
ASSERT_EQ(keyframe_att0->num_components(),
keyframe_att1->num_components());
for (int i = 0; i < animation0.num_frames(); ++i) {
std::array<float, num_components_t> att_value0;
std::array<float, num_components_t> att_value1;
ASSERT_TRUE((keyframe_att0->GetValue<float, num_components_t>(
draco::AttributeValueIndex(i), &att_value0)));
ASSERT_TRUE((keyframe_att1->GetValue<float, num_components_t>(
draco::AttributeValueIndex(i), &att_value1)));
for (int j = 0; j < att_value0.size(); ++j) {
ASSERT_FLOAT_EQ(att_value0[j], att_value1[j]);
}
}
}
}
template <int num_components_t>
void TestKeyframeAnimationEncoding() {
TestKeyframeAnimationEncoding<num_components_t>(false);
}
template <int num_components_t>
void TestKeyframeAnimationEncoding(bool quantized) {
// Encode animation class.
draco::EncoderBuffer buffer;
draco::KeyframeAnimationEncoder encoder;
EncoderOptions options = EncoderOptions::CreateDefaultOptions();
if (quantized) {
// Set quantization for timestamps.
options.SetAttributeInt(0, "quantization_bits", 20);
// Set quantization for keyframes.
for (int i = 1; i <= keyframe_animation_.num_animations(); ++i) {
options.SetAttributeInt(i, "quantization_bits", 20);
}
}
ASSERT_TRUE(
encoder.EncodeKeyframeAnimation(keyframe_animation_, options, &buffer)
.ok());
draco::DecoderBuffer dec_decoder;
draco::KeyframeAnimationDecoder decoder;
DecoderBuffer dec_buffer;
dec_buffer.Init(buffer.data(), buffer.size());
// Decode animation class.
std::unique_ptr<KeyframeAnimation> decoded_animation(
new KeyframeAnimation());
DecoderOptions dec_options;
ASSERT_TRUE(
decoder.Decode(dec_options, &dec_buffer, decoded_animation.get()).ok());
// Verify if animation before and after compression is identical.
CompareAnimationData<num_components_t>(keyframe_animation_,
*decoded_animation, quantized);
}
draco::KeyframeAnimation keyframe_animation_;
std::vector<draco::KeyframeAnimation::TimestampType> timestamps_;
std::vector<float> animation_data_;
};
TEST_F(KeyframeAnimationEncodingTest, OneComponent) {
const int num_frames = 1;
ASSERT_TRUE(CreateAndAddTimestamps(num_frames));
ASSERT_EQ(CreateAndAddAnimationData(num_frames, 1), 1);
TestKeyframeAnimationEncoding<1>();
}
TEST_F(KeyframeAnimationEncodingTest, ManyComponents) {
const int num_frames = 100;
ASSERT_TRUE(CreateAndAddTimestamps(num_frames));
ASSERT_EQ(CreateAndAddAnimationData(num_frames, 100), 1);
TestKeyframeAnimationEncoding<100>();
}
TEST_F(KeyframeAnimationEncodingTest, ManyComponentsWithQuantization) {
const int num_frames = 100;
ASSERT_TRUE(CreateAndAddTimestamps(num_frames));
ASSERT_EQ(CreateAndAddAnimationData(num_frames, 4), 1);
// Test compression with quantization.
TestKeyframeAnimationEncoding<4>(true);
}
TEST_F(KeyframeAnimationEncodingTest, MultipleAnimations) {
const int num_frames = 5;
ASSERT_TRUE(CreateAndAddTimestamps(num_frames));
ASSERT_EQ(CreateAndAddAnimationData(num_frames, 3), 1);
ASSERT_EQ(CreateAndAddAnimationData(num_frames, 3), 2);
TestKeyframeAnimationEncoding<3>();
}
} // namespace draco
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