/**

 Copyright (c) 2010-2013  hkrn

 All rights reserved.

 Redistribution and use in source and binary forms, with or
 without modification, are permitted provided that the following
 conditions are met:

 - Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
 - Redistributions in binary form must reproduce the above
   copyright notice, this list of conditions and the following
   disclaimer in the documentation and/or other materials provided
   with the distribution.
 - Neither the name of the MMDAI project team nor the names of
   its contributors may be used to endorse or promote products
   derived from this software without specific prior written
   permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 POSSIBILITY OF SUCH DAMAGE.

*/

#include "vpvl2/vpvl2.h"
#include "vpvl2/internal/util.h"

#include "vpvl2/mvd/CameraKeyframe.h"

namespace vpvl2
{
namespace mvd
{

#pragma pack(push, 1)

struct CameraKeyframeChunk {
    CameraKeyframeChunk() {}
    int32 layerIndex;
    uint64 timeIndex;
    float32 distance;
    float32 position[3];
    float32 rotation[3];
    float32 fov;
    uint8 perspective;
    internal::InterpolationPair positionIP;
    internal::InterpolationPair rotationIP;
    internal::InterpolationPair distanceIP;
    internal::InterpolationPair fovIP;
};

#pragma pack(pop)

CameraKeyframe::CameraKeyframe(const Motion *motionRef)
    : VPVL2_KEYFRAME_INITIALIZE_FIELDS(),
      m_ptr(0),
      m_motionRef(motionRef),
      m_position(kZeroV3),
      m_angle(kZeroV3),
      m_distance(0),
      m_fov(0),
      m_perspective(false)
{
}

CameraKeyframe::~CameraKeyframe()
{
    VPVL2_KEYFRAME_DESTROY_FIELDS();
    internal::deleteObject(m_ptr);
    m_position.setZero();
    m_angle.setZero();
    m_distance = 0;
    m_fov = 0;
    m_perspective = false;
}

vsize CameraKeyframe::size()
{
    static const CameraKeyframeChunk keyframe;
    return sizeof(keyframe);
}

bool CameraKeyframe::preparse(uint8 *&ptr, vsize &rest, vsize reserved, Motion::DataInfo & /* info */)
{
    if (!internal::validateSize(ptr, size(), rest)) {
        VPVL2_LOG(WARNING, "Invalid size of MVD camera keyframe detected: ptr=" << static_cast<const void *>(ptr) << " rest=" << rest);
        return false;
    }
    if (!internal::validateSize(ptr, reserved, rest)) {
        VPVL2_LOG(WARNING, "Invalid size of MVD reserved camera keyframe detected: ptr=" << static_cast<const void *>(ptr) << " size=" << reserved << " rest=" << rest);
        return false;
    }
    return true;
}

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

void CameraKeyframe::read(const uint8 *data)
{
    CameraKeyframeChunk chunk;
    internal::getData(data, chunk);
    Vector3 angle;
    internal::setPosition(chunk.position, m_position);
    internal::setPositionRaw(chunk.rotation, angle);
#ifdef VPVL2_COORDINATE_OPENGL
    setAngle(Vector3(btDegrees(angle[0]), btDegrees(angle[1]) - 180, btDegrees(angle[2])));
#else
    setAngle(Vector3(btDegrees(angle[0]), btDegrees(angle[1]), btDegrees(angle[2])));
#endif
    setDistance(chunk.distance);
    setTimeIndex(TimeIndex(chunk.timeIndex));
    setLayerIndex(chunk.layerIndex);
    setFov(btDegrees(chunk.fov));
    setPerspective(chunk.perspective != 0);
    setInterpolationParameter(kCameraLookAtX, internal::InterpolationTable::toQuadWord(chunk.positionIP));
    setInterpolationParameter(kCameraAngle, internal::InterpolationTable::toQuadWord(chunk.rotationIP));
    setInterpolationParameter(kCameraFov, internal::InterpolationTable::toQuadWord(chunk.fovIP));
    setInterpolationParameter(kCameraDistance, internal::InterpolationTable::toQuadWord(chunk.distanceIP));
}

void CameraKeyframe::write(uint8 *data) const
{
    CameraKeyframeChunk chunk;
    internal::getPosition(lookAt(), chunk.position);
    const Vector3 &a = angle();
#ifdef VPVL2_COORDINATE_OPENGL
    chunk.rotation[0] = btRadians(a.x());
    chunk.rotation[1] = btRadians(a.y() + 180);
    chunk.rotation[2] = btRadians(a.z());
#else
    chunk.rotation[0] = btRadians(a.x());
    chunk.rotation[1] = btRadians(a.y());
    chunk.rotation[2] = btRadians(a.z());
#endif
    chunk.distance = distance();
    chunk.timeIndex = uint64(timeIndex());
    chunk.layerIndex = layerIndex();
    chunk.fov = btRadians(fov());
    chunk.perspective = isPerspective() ? 1 : 0;
    tableForPosition().getInterpolationPair(chunk.positionIP);
    tableForRotation().getInterpolationPair(chunk.rotationIP);
    tableForFov().getInterpolationPair(chunk.fovIP);
    tableForDistance().getInterpolationPair(chunk.distanceIP);
    internal::writeBytes(&chunk, sizeof(chunk), data);
}

vsize CameraKeyframe::estimateSize() const
{
    return size();
}

ICameraKeyframe *CameraKeyframe::clone() const
{
    CameraKeyframe *keyframe = m_ptr = new CameraKeyframe(m_motionRef);
    keyframe->setTimeIndex(m_timeIndex);
    keyframe->setLayerIndex(m_layerIndex);
    keyframe->setDistance(m_distance);
    keyframe->setFov(m_fov);
    keyframe->setLookAt(m_position);
    keyframe->setAngle(m_angle);
    keyframe->setPerspective(m_perspective);
    keyframe->setInterpolationParameter(kCameraLookAtX, m_interpolationPosition.parameter);
    keyframe->setInterpolationParameter(kCameraAngle, m_interpolationRotation.parameter);
    keyframe->setInterpolationParameter(kCameraFov, m_interpolationFov.parameter);
    keyframe->setInterpolationParameter(kCameraDistance, m_interpolationDistance.parameter);
    m_ptr = 0;
    return keyframe;
}

void CameraKeyframe::setDefaultInterpolationParameter()
{
    m_interpolationPosition.reset();
    m_interpolationRotation.reset();
    m_interpolationFov.reset();
    m_interpolationDistance.reset();
}

void CameraKeyframe::setInterpolationParameter(InterpolationType type, const QuadWord &value)
{
    switch (type) {
    case kCameraLookAtX:
    case kCameraLookAtY:
    case kCameraLookAtZ:
        m_interpolationPosition.build(value, interpolationTableSize());
        break;
    case kCameraAngle:
        m_interpolationRotation.build(value, interpolationTableSize());
        break;
    case kCameraFov:
        m_interpolationFov.build(value, interpolationTableSize());
        break;
    case kCameraDistance:
        m_interpolationDistance.build(value, interpolationTableSize());
        break;
    default:
        break;
    }
}

void CameraKeyframe::getInterpolationParameter(InterpolationType type, QuadWord &value) const
{
    switch (type) {
    case kCameraLookAtX:
    case kCameraLookAtY:
    case kCameraLookAtZ:
        value = m_interpolationPosition.parameter;
        break;
    case kCameraAngle:
        value = m_interpolationRotation.parameter;
        break;
    case kCameraFov:
        value = m_interpolationFov.parameter;
        break;
    case kCameraDistance:
        value = m_interpolationDistance.parameter;
        break;
    default:
        break;
    }
}

Vector3 CameraKeyframe::lookAt() const
{
    return m_position;
}

Vector3 CameraKeyframe::angle() const
{
    return m_angle;
}

Scalar CameraKeyframe::distance() const
{
    return m_distance;
}

Scalar CameraKeyframe::fov() const
{
    return m_fov;
}

bool CameraKeyframe::isPerspective() const
{
    return m_perspective;
}

void CameraKeyframe::setLookAt(const Vector3 &value)
{
    m_position = value;
}

void CameraKeyframe::setAngle(const Vector3 &value)
{
    m_angle = value;
}

void CameraKeyframe::setDistance(const Scalar &value)
{
    m_distance = value;
}

void CameraKeyframe::setFov(const Scalar &value)
{
    m_fov = value;
}

void CameraKeyframe::setPerspective(bool value)
{
    m_perspective = value;
}

void CameraKeyframe::setName(const IString * /* value */)
{
}

IKeyframe::Type CameraKeyframe::type() const
{
    return kCameraKeyframe;
}

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

const internal::InterpolationTable &CameraKeyframe::tableForPosition() const
{
    return m_interpolationPosition;
}

const internal::InterpolationTable &CameraKeyframe::tableForRotation() const
{
    return m_interpolationRotation;
}

const internal::InterpolationTable &CameraKeyframe::tableForFov() const
{
    return m_interpolationFov;
}

const internal::InterpolationTable &CameraKeyframe::tableForDistance() const
{
    return m_interpolationDistance;
}

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