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/*  Copyright (c) 2010-2013  hkrn                                    */
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#include "vpvl2/vpvl2.h"
#include "vpvl2/internal/util.h"

#include "vpvl2/mvd/MorphKeyframe.h"
#include "vpvl2/mvd/NameListSection.h"

namespace vpvl2
{
namespace mvd
{

#pragma pack(push, 1)

struct MorphKeyframeChunk {
    MorphKeyframeChunk() {}
    uint64_t timeIndex;
    float weight;
    InterpolationPair weightIP;
};

#pragma pack(pop)

MorphKeyframe::MorphKeyframe(const Motion *motionRef)
    : VPVL2_KEYFRAME_INITIALIZE_FIELDS(),
      m_ptr(0),
      m_motionRef(motionRef),
      m_weight(0)
{
}

MorphKeyframe::~MorphKeyframe()
{
    VPVL2_KEYFRAME_DESTROY_FIELDS()
    delete m_ptr;
    m_ptr = 0;
    m_motionRef = 0;
    m_weight = 0;
}

size_t MorphKeyframe::size()
{
    static const MorphKeyframeChunk keyframe;
    return sizeof(keyframe);
}

bool MorphKeyframe::preparse(uint8_t *&ptr, size_t &rest, size_t reserved, Motion::DataInfo & /* info */)
{
    if (!internal::validateSize(ptr, size(), rest)) {
        return false;
    }
    if (!internal::validateSize(ptr, reserved, rest)) {
        return false;
    }
    return true;
}

int MorphKeyframe::interpolationTableSize()
{
    return 256;
}

void MorphKeyframe::read(const uint8_t *data)
{
    MorphKeyframeChunk chunk;
    internal::getData(data, chunk);
    setWeight(chunk.weight);
    setTimeIndex(TimeIndex(chunk.timeIndex));
    setInterpolationParameter(kWeight, Motion::InterpolationTable::toQuadWord(chunk.weightIP));
}

void MorphKeyframe::write(uint8_t *data) const
{
    MorphKeyframeChunk chunk;
    chunk.weight = float(weight());
    chunk.timeIndex = uint64_t(timeIndex());
    tableForWeight().getInterpolationPair(chunk.weightIP);
    internal::writeBytes(reinterpret_cast<const uint8_t *>(&chunk), sizeof(chunk), data);
}

size_t MorphKeyframe::estimateSize() const
{
    return size();
}

IMorphKeyframe *MorphKeyframe::clone() const
{
    MorphKeyframe *keyframe = m_ptr = new MorphKeyframe(m_motionRef);
    keyframe->setTimeIndex(m_timeIndex);
    keyframe->setLayerIndex(m_layerIndex);
    keyframe->setWeight(m_weight);
    keyframe->setInterpolationParameter(kWeight, m_interpolationWeight.parameter);
    m_ptr = 0;
    return keyframe;
}

void MorphKeyframe::setDefaultInterpolationParameter()
{
    m_interpolationWeight.reset();
}

void MorphKeyframe::setInterpolationParameter(InterpolationType type, const QuadWord &value)
{
    switch (type) {
    case kWeight:
    default:
        m_interpolationWeight.build(value, interpolationTableSize());
        break;
    }
}

void MorphKeyframe::getInterpolationParameter(InterpolationType type, QuadWord &value) const
{
    switch (type) {
    case kWeight:
    default:
        value = m_interpolationWeight.parameter;
        break;
    }
}

IMorph::WeightPrecision MorphKeyframe::weight() const
{
    return m_weight;
}

void MorphKeyframe::setWeight(const IMorph::WeightPrecision &value)
{
    m_weight = value;
}

void MorphKeyframe::setName(const IString *value)
{
    internal::setString(value, m_namePtr);
    m_motionRef->nameListSection()->addName(value);
}

IMorphKeyframe::Type MorphKeyframe::type() const
{
    return kMorphKeyframe;
}

const Motion *MorphKeyframe::parentMotionRef() const
{
    return m_motionRef;
}

const Motion::InterpolationTable &MorphKeyframe::tableForWeight() const
{
    return m_interpolationWeight;
}

} /* namespace mvd */
} /* namespace vpvl2 */
