/***************************************************************************
                          Hue/Saturation filter ported from mplayer 
 (c)  * Software equalizer (brightness, contrast, gamma, saturation)
 *
 * Hampa Hug <hampa@hampa.ch> (original LUT gamma/contrast/brightness filter)
 * Daniel Moreno <comac@comac.darktech.org> (saturation, R/G/B gamma support)
 * Richard Felker (original MMX contrast/brightness code (vf_eq.c))
 * Michael Niedermayer <michalni@gmx.at> (LUT16)
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#include "ADM_default.h"
#include "ADM_coreVideoFilter.h"
#include "ADM_coreVideoFilterInternal.h"
#include "DIA_factory.h"

#include "ADM_vidEq2.h"

#include "eq2_desc.cpp"
#include <math.h>

#ifdef CAN_DO_INLINE_X86_ASM
static void affine_1d_MMX (oneSetting *par, ADMImage *srcImage, ADMImage *destImage, ADM_PLANE plane);
#endif
static void create_lut(oneSetting *par);
static void apply_lut (oneSetting *par, ADMImage *srcImage, ADMImage *destImage, ADM_PLANE plane);

extern uint8_t DIA_getEQ2Param(eq2 *param,ADM_coreVideoFilter *in);

// Add the hook to make it valid plugin
DECLARE_VIDEO_FILTER_PARTIALIZABLE( ADMVideoEq2, // Class
                        1,0,0,              // Version
                        ADM_UI_TYPE_BUILD,         // UI
                        VF_COLORS,            // Category
                        "eq2",            // internal name (must be uniq!)
                        QT_TRANSLATE_NOOP("eq2","MPlayer eq2"),            // Display name
                        QT_TRANSLATE_NOOP("eq2","Adjust contrast, brightness, saturation and gamma.") // Description
                    );
/**
    \fn processPlane
*/
bool ADMVideoEq2::processPlane(oneSetting *par, ADMImage *srcImage, ADMImage *destImage, ADM_PLANE plane)
{
#ifdef CAN_DO_INLINE_X86_ASM
    if(CpuCaps::hasMMX())
    {
        affine_1d_MMX(par,srcImage,destImage,plane);
        return true;
    }
#endif
    apply_lut(par,srcImage,destImage,plane);
    return true;
}
/**
    \fn configure
*/
bool  ADMVideoEq2::configure()
{
  uint8_t r=1;
  float h,s; 
  r=DIA_getEQ2Param(&_param,previousFilter);
  update();
  return r;        
}
/**
    \fn getConfiguration
*/
const char   *ADMVideoEq2::getConfiguration(void)
{
    static char s[256];
    snprintf(s,255,"Eq2: Contrast: %1.2f; Brightness: %1.2f; Saturation: %1.2f; Gamma: %1.2f; Gamma Weight: %1.2f; Red: %1.2f; Green: %1.2f; Blue: %1.2f",
            _param.contrast,_param.brightness,_param.saturation,
            _param.gamma,_param.gamma_weight,
            _param.rgamma,_param.ggamma,_param.bgamma);
    return s;
}
/**
    \fn ctor
*/
ADMVideoEq2::ADMVideoEq2(ADM_coreVideoFilter *in,CONFcouple *couples) 
        : ADM_coreVideoFilter(in,couples)
{
  if(!couples || !ADM_paramLoad(couples,eq2_param,&_param))
  {
    _param.contrast =1.0;                
    _param.brightness=0.0;
    _param.saturation =1.0;  
    _param.gamma =1.0; 
    _param.gamma_weight=1.0; 
    _param.rgamma =1.0; 
    _param.ggamma =1.0; 
    _param.bgamma =1.0;    
  }      
  update();
  mysrc = new ADMImageDefault(info.width,info.height);
}
/**
    \fn update
    \brief recompute lut
*/
void ADMVideoEq2::update(void)
{
   update_lut(&settings,&_param);      
}
/**
    \fn dtor
*/
ADMVideoEq2::~ADMVideoEq2()
{
  if(mysrc) delete mysrc;
  mysrc = NULL;
}
/**
    \fn getCoupledConf
    \brief Return our current configuration as couple name=value
*/
bool         ADMVideoEq2::getCoupledConf(CONFcouple **couples)
{
    return ADM_paramSave(couples, eq2_param,&_param);
}

void ADMVideoEq2::setCoupledConf(CONFcouple *couples)
{
    ADM_paramLoad(couples, eq2_param, &_param);
}

/**
    \fn getNextFrame
*/
 bool         ADMVideoEq2::getNextFrame(uint32_t *fn,ADMImage *image)
{
    if(!previousFilter->getNextFrame(fn,mysrc))
        return false;
    image->copyInfo(mysrc);

    for(int i=0; i < 3; i++)
        processPlane(&(settings.param[i]),mysrc,image,(ADM_PLANE)i);

    return true;
}
/**
    \fn update_lut
*/
bool ADMVideoEq2::update_lut(Eq2Settings *settings, eq2 *cfg)
{
     memset(settings,0,sizeof(*settings));

    settings->param[0].lut_clean=0;
    settings->param[1].lut_clean=0;
    settings->param[2].lut_clean=0;
    settings->contrast=cfg->contrast;
    settings->brightness=cfg->brightness;
    settings->saturation=cfg->saturation;

    settings->ggamma=cfg->ggamma;
    settings->bgamma=cfg->bgamma;
    settings->rgamma=cfg->rgamma;
    settings->gamma=cfg->gamma;

    settings->gamma_weight=cfg->gamma_weight;

    if(settings->ggamma<0.1) settings->ggamma=0.1;

    settings->param[0].c=cfg->contrast;
    settings->param[0].b=cfg->brightness;
    settings->param[0].g=settings->gamma*settings->ggamma;
    settings->param[0].w=settings->gamma_weight;

    settings->param[1].c=cfg->saturation;
    settings->param[1].b=0;
    settings->param[1].g=sqrt(settings->rgamma/settings->ggamma);
    settings->param[1].w=settings->gamma_weight;

    settings->param[2].c=cfg->saturation;
    settings->param[2].b=0;
    settings->param[2].g=sqrt(settings->bgamma/settings->ggamma);
    settings->param[2].w=settings->gamma_weight;

    //printf("GGamma:%f\n",settings->ggamma);
    create_lut(&(settings->param[0]));
    create_lut(&(settings->param[1]));
    create_lut(&(settings->param[2]));

    return true;
}
/**
    \fn create_lut
*/
void create_lut (oneSetting *par)
{
  unsigned i;
  double   g, v;
  double   lw, gw;

  g = par->g;
  gw = par->w;
  lw = 1.0 - gw;

  if (g < 0.001) {
    g = 0.001;
  }
  if (g > 1000.0) {
    g = 1000.0;
  }

  g = 1.0 / g;

  for (i = 0; i < 256; i++) {
    v = (double) i / 255.0;
    v = par->c * (v - 0.5) + 0.5 + par->b;

    if (v <= 0.0) {
      par->lut[i] = 0;
    }
    else {
      v = v*lw + pow(v, g)*gw;

      if (v >= 1.0) {
        par->lut[i] = 255;
      }
      else {
        par->lut[i] = (unsigned char) (256.0 * v);
      }
    }
  }

#ifdef LUT16
  for(i=0; i<256*256; i++){
    par->lut16[i]= par->lut[i&0xFF] + (par->lut[i>>8]<<8);
  }
#endif

  par->lut_clean = 1;
}

#ifdef CAN_DO_INLINE_X86_ASM
/**
    \fn affine_1d_MMX
*/  
void affine_1d_MMX (oneSetting *par, ADMImage *srcImage, ADMImage *destImage,ADM_PLANE plane)
{
  unsigned i;
  int      contrast, brightness;
  unsigned dstep, sstep,w3;
  int      pel;
  short    int brvec[4];
  short    int contvec[4];

  int h=srcImage->GetHeight(plane);
  int w=srcImage->GetWidth(plane);


  w3=w>>3;
//  printf("\nmmx: src=%p dst=%p w=%d h=%d ds=%d ss=%d\n",src,dst,w,h,dstride,sstride);
  if(par->g!=1.0) return apply_lut(par,srcImage,destImage,plane);
  //printf("MMX\n");
  contrast = (int) (par->c * 256 * 16 + 0.4999);
  brightness = ((int) (100.0 * par->b + 100.0 + 0.4999) * 512) / 200 - 128 - contrast / 32;

  brvec[0] = brvec[1] = brvec[2] = brvec[3] = brightness;
  contvec[0] = contvec[1] = contvec[2] = contvec[3] = contrast;

  asm volatile (
        "movq (%0), %%mm3 \n\t"
        "movq (%1), %%mm4 \n\t"
        ::  "r" (brvec),"r" (contvec)
        
        );
  uint8_t *src=srcImage->GetReadPtr(plane);
  uint8_t *dst=destImage->GetWritePtr(plane);

  int srcDelta=srcImage->GetPitch(plane)-w;
  int dstDelta=destImage->GetPitch(plane)-w;

  while (h-- > 0) {
    asm volatile (
      "pxor %%mm0, %%mm0 \n\t"
      "movl %4, %%eax\n\t"
      ".p2align 4 \n\t"
      "lop%=: \n\t"
      "movq (%0), %%mm1 \n\t"
      "movq (%0), %%mm2 \n\t"
      "punpcklbw %%mm0, %%mm1 \n\t"
      "punpckhbw %%mm0, %%mm2 \n\t"
      "psllw $4, %%mm1 \n\t"
      "psllw $4, %%mm2 \n\t"
      "pmulhw %%mm4, %%mm1 \n\t"
      "pmulhw %%mm4, %%mm2 \n\t"
      "paddw %%mm3, %%mm1 \n\t"
      "paddw %%mm3, %%mm2 \n\t"
      "packuswb %%mm2, %%mm1 \n\t"
      "add $8, %0 \n\t"
      "movq %%mm1, (%1) \n\t"
      "add $8, %1 \n\t"
      "decl %%eax \n\t"
      "jnz lop%= \n\t"
      : "=r" (src), "=r" (dst)
      : "0" (src), "1" (dst), "r" (w3)
      : "%eax"
    );

    for (i = w & 7; i > 0; i--) {
      pel = ((*src++ * contrast) >> 12) + brightness;
      if (pel & 768) {
        pel = (-pel) >> 31;
      }
      *dst++ = pel;
    }
    src+=srcDelta;
    dst+=dstDelta;
  }

  asm volatile ( "emms \n\t" ::: "memory" );
}
#endif
/**
    \fn apply_lut
*/
void apply_lut (oneSetting *par, ADMImage *srcImage, ADMImage *destImage,ADM_PLANE plane)
{           
            
    
  unsigned int dstride,  sstride;
  unsigned int i, j, w2;
  unsigned char *lut;
  uint16_t *lut16;

   dstride=destImage->GetPitch(plane);
   sstride=srcImage->GetPitch(plane);
   int w=srcImage->GetWidth(plane);
   int h=srcImage->GetHeight(plane);

   uint8_t *src=srcImage->GetReadPtr(plane);
   uint8_t *dst=destImage->GetWritePtr(plane);

  lut = par->lut;
#ifdef LUT16
  lut16 = par->lut16;
  w2= (w>>3)<<2;
  for (j = 0; j < h; j++) {
    uint16_t *src16= (uint16_t*)src;
    uint16_t *dst16= (uint16_t*)dst;
    for (i = 0; i < w2; i+=4) {
      dst16[i+0] = lut16[src16[i+0]];
      dst16[i+1] = lut16[src16[i+1]];
      dst16[i+2] = lut16[src16[i+2]];
      dst16[i+3] = lut16[src16[i+3]];
    }
    i <<= 1;
#else
  w2= (w>>3)<<3;
  for (j = 0; j < h; j++) {
    for (i = 0; i < w2; i+=8) {
      dst[i+0] = lut[src[i+0]];
      dst[i+1] = lut[src[i+1]];
      dst[i+2] = lut[src[i+2]];
      dst[i+3] = lut[src[i+3]];
      dst[i+4] = lut[src[i+4]];
      dst[i+5] = lut[src[i+5]];
      dst[i+6] = lut[src[i+6]];
      dst[i+7] = lut[src[i+7]];
    }
#endif
    for (; i < w; i++) {
      dst[i] = lut[src[i]];
    }

    src += sstride;
    dst += dstride;
  }
}  
// EOF
