#include "toonzqt/fxhistogramrender.h"

#include "toonzqt/histogram.h"

#include "tsystem.h"

#include "timagecache.h"

#include "trasterfx.h"

#include "trasterimage.h"

#include "toutputproperties.h"

#include "toonz/txsheethandle.h"

#include "toonz/tfxhandle.h"

#include "toonz/tscenehandle.h"

#include "toonz/txshlevelhandle.h"

#include "toonz/toonzscene.h"

#include "toonz/sceneproperties.h"

#include "toonz/scenefx.h"

#include "toonz/tcamera.h"

#include "toonz/txshlevel.h"

#include <qmetatype></qmetatype>

//*******************************************************************************************************

// FxHistogramRenderPort

//*******************************************************************************************************

FxHistogramRenderPort::FxHistogramRenderPort() {}

//------------------------------------------------------------------------------------------------------

FxHistogramRenderPort::~FxHistogramRenderPort() {}

//------------------------------------------------------------------------------------------------------

void FxHistogramRenderPort::onRenderRasterCompleted(

    const RenderData &renderData) {

  // It is necessary to clone the raster. The raster is the same for each render

  // and

  // each new render modify the images in the filpBooks showing old previews.

  emit renderCompleted(renderData.m_rasA->clone(), renderData.m_renderId);

}

//*******************************************************************************************************

// PreviewFxManager

//*******************************************************************************************************

FxHistogramRender::FxHistogramRender()

    : QObject()

    , m_renderer(TSystem::getProcessorCount())

    , m_lastFrameInfo()

    , m_scene()

    , m_histograms()

    , m_isCameraViewMode(false) {

  m_renderPort = new FxHistogramRenderPort();

  m_renderer.enablePrecomputing(false);

  m_renderer.addPort(m_renderPort);

  m_abortedRendering.clear();

  qRegisterMetaType<trasterp>("TRasterP");</trasterp>

  qRegisterMetaType<uint>("UINT");</uint>

  connect(m_renderPort, SIGNAL(renderCompleted(const TRasterP &, UINT)), this,

          SLOT(onRenderCompleted(const TRasterP &, UINT)));

}

//-----------------------------------------------------------------------------

FxHistogramRender::~FxHistogramRender() {

  if (m_renderPort) delete m_renderPort;

}

//-----------------------------------------------------------------------------

void FxHistogramRender::setScene(ToonzScene *scene) { m_scene = scene; }

//-----------------------------------------------------------------------------

void FxHistogramRender::setHistograms(Histograms *histograms) {

  m_histograms = histograms;

}

//-----------------------------------------------------------------------------

void FxHistogramRender::computeHistogram(TFxP fx, int frame) {

  if (!m_histograms || !m_scene) return;

  if (!fx.getPointer()) {

    m_histograms->setRaster(0);

    return;

  }

  TSceneProperties *sceneProperties = m_scene->getProperties();

  if (!sceneProperties) return;

  TOutputProperties *outputProperties = sceneProperties->getPreviewProperties();

  if (!outputProperties) return;

  TRenderSettings rs = outputProperties->getRenderSettings();

  TFxP buildedFx;

  if (m_isCameraViewMode)

    buildedFx =

        buildPartialSceneFx(m_scene, (double)frame, fx, rs.m_shrinkX, true);

  else

    buildedFx = buildSceneFx(m_scene, frame, fx, true);

  if (!buildedFx.getPointer()) return;

  TRasterFxP rasterFx(buildedFx);

  if (!rasterFx) return;

  std::string alias = rasterFx->getAlias(frame, rs);

  if (!TImageCache::instance()->isCached(alias + ".noext" +

                                         std::to_string(frame))) {

    TDimension size = m_scene->getCurrentCamera()->getRes();

    TRectD area(TPointD(-0.5 * size.lx, -0.5 * size.ly),

                TDimensionD(size.lx, size.ly));

    m_renderPort->setRenderArea(area);

    TFxPair fxPair;

    fxPair.m_frameA = buildedFx;

    m_lastFrameInfo.m_renderId =

        m_renderer.startRendering((double)frame, rs, fxPair);

    if (m_lastFrameInfo.m_renderId == (UINT)-1) return;

    m_lastFrameInfo.m_frame   = frame;

    m_lastFrameInfo.m_fx      = fx;

    m_lastFrameInfo.m_fxAlias = alias;

  } else {

    std::string id =

        std::to_string(fx->getIdentifier()) + ".noext" + std::to_string(frame);

    TRasterImageP img = TImageCache::instance()->get(id, false);

    m_histograms->setRaster(img->getRaster());

  }

}

//-----------------------------------------------------------------------------

void FxHistogramRender::invalidateFrame(int frame) {

  if (!m_histograms || !m_scene) return;

  QMutexLocker sl(&m_mutex);

  updateRenderer(frame);

}

//-----------------------------------------------------------------------------

void FxHistogramRender::updateRenderer(int frame) {

  if (!m_histograms || !m_scene) return;

  if (!m_lastFrameInfo.m_fx.getPointer()) {

    m_histograms->setRaster(0);

    return;

  }

  // abort old render

  UINT renderId = m_lastFrameInfo.m_renderId;

  m_renderer.abortRendering(renderId);

  m_abortedRendering.append(renderId);

  int i;

  for (i = 0; i < m_scene->getFrameCount(); i++) {

    std::string id = std::to_string(m_lastFrameInfo.m_fx->getIdentifier()) +

                     ".noext" + std::to_string(i);

    TImageCache::instance()->remove(id);

  }

  m_lastFrameInfo.m_frame = frame;

  remakeRender();

}

//-----------------------------------------------------------------------------

void FxHistogramRender::remakeRender() {

  if (!m_histograms || !m_scene) return;

  if (!m_lastFrameInfo.m_fx.getPointer()) {

    m_histograms->setRaster(0);

    return;

  }

  TDimension size = m_scene->getCurrentCamera()->getRes();

  TRectD area(TPointD(-0.5 * size.lx, -0.5 * size.ly),

              TDimensionD(size.lx, size.ly));

  m_renderPort->setRenderArea(area);

  TRenderSettings rs =

      m_scene->getProperties()->getPreviewProperties()->getRenderSettings();

  TFxP buildedFx =

      buildPartialSceneFx(m_scene, (double)m_lastFrameInfo.m_frame,

                          m_lastFrameInfo.m_fx, rs.m_shrinkX, true);

  TRasterFxP rasterFx(buildedFx);

  if (!rasterFx) return;

  std::string alias = rasterFx->getAlias(m_lastFrameInfo.m_frame, rs);

  TFxPair fxPair;

  fxPair.m_frameA = buildedFx;

  m_lastFrameInfo.m_renderId =

      m_renderer.startRendering((double)m_lastFrameInfo.m_frame, rs, fxPair);

  if (m_lastFrameInfo.m_renderId == (UINT)-1) return;

  m_lastFrameInfo.m_fxAlias = alias;

}

//-----------------------------------------------------------------------------

void FxHistogramRender::onRenderCompleted(const TRasterP &raster,

                                          UINT renderId) {

  if (m_abortedRendering.contains(renderId)) {

    m_abortedRendering.removeAll(renderId);

    return;

  }

  QMutexLocker sl(&m_mutex);

  TRasterImageP img(raster);

  std::string id = std::to_string(m_lastFrameInfo.m_fx->getIdentifier()) +

                   ".noext" + std::to_string(m_lastFrameInfo.m_frame);

  TImageCache::instance()->add(id, img, true);

  m_histograms->setRaster(raster);

}