/*
 * Copyright (C) 2001-2003 Michael Niedermayer (michaelni@gmx.at)
 *
 * AltiVec optimizations (C) 2004 Romain Dolbeau <romain@dolbeau.org>
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg 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.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file postprocess.c
 * postprocessing.
 */

/*
                        C       MMX     MMX2    3DNow   AltiVec
isVertDC                Ec      Ec                      Ec
isVertMinMaxOk          Ec      Ec                      Ec
doVertLowPass           E               e       e       Ec
doVertDefFilter         Ec      Ec      e       e       Ec
isHorizDC               Ec      Ec                      Ec
isHorizMinMaxOk         a       E                       Ec
doHorizLowPass          E               e       e       Ec
doHorizDefFilter        Ec      Ec      e       e       Ec
do_a_deblock            Ec      E       Ec      E
deRing                  E               e       e*      Ecp
Vertical RKAlgo1        E               a       a
Horizontal RKAlgo1                      a       a
Vertical X1#            a               E       E
Horizontal X1#          a               E       E
LinIpolDeinterlace      e               E       E*
CubicIpolDeinterlace    a               e       e*
LinBlendDeinterlace     e               E       E*
MedianDeinterlace#      E       Ec      Ec
TempDeNoiser#           E               e       e       Ec

* i dont have a 3dnow CPU -> its untested, but noone said it doesnt work so it seems to work
# more or less selfinvented filters so the exactness isnt too meaningfull
E = Exact implementation
e = allmost exact implementation (slightly different rounding,...)
a = alternative / approximate impl
c = checked against the other implementations (-vo md5)
p = partially optimized, still some work to do
*/

/*
TODO:
reduce the time wasted on the mem transfer
unroll stuff if instructions depend too much on the prior one
move YScale thing to the end instead of fixing QP
write a faster and higher quality deblocking filter :)
make the mainloop more flexible (variable number of blocks at once
        (the if/else stuff per block is slowing things down)
compare the quality & speed of all filters
split this huge file
optimize c versions
try to unroll inner for(x=0 ... loop to avoid these damn if(x ... checks
...
*/

//Changelog: use the Subversion log

#include "config.h"
#include "avutil.h"
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#endif
//#undef HAVE_MMX2
//#define HAVE_3DNOW
//#undef HAVE_MMX
//#undef ARCH_X86
//#define DEBUG_BRIGHTNESS
#ifdef USE_FASTMEMCPY
#include "libvo/fastmemcpy.h"
#endif
#include "postprocess.h"
#include "postprocess_internal.h"

#include "mangle.h" //FIXME should be supressed

#ifdef HAVE_ALTIVEC_H
#include <altivec.h>
#endif

#define GET_MODE_BUFFER_SIZE 500
#define OPTIONS_ARRAY_SIZE 10
#define BLOCK_SIZE 8
#define TEMP_STRIDE 8
//#define NUM_BLOCKS_AT_ONCE 16 //not used yet

#if defined(ARCH_X86)
static DECLARE_ALIGNED(8, uint64_t attribute_used, w05)= 0x0005000500050005LL;
static DECLARE_ALIGNED(8, uint64_t attribute_used, w04)= 0x0004000400040004LL;
static DECLARE_ALIGNED(8, uint64_t attribute_used, w20)= 0x0020002000200020LL;
static DECLARE_ALIGNED(8, uint64_t attribute_used, b00)= 0x0000000000000000LL;
static DECLARE_ALIGNED(8, uint64_t attribute_used, b01)= 0x0101010101010101LL;
static DECLARE_ALIGNED(8, uint64_t attribute_used, b02)= 0x0202020202020202LL;
static DECLARE_ALIGNED(8, uint64_t attribute_used, b08)= 0x0808080808080808LL;
static DECLARE_ALIGNED(8, uint64_t attribute_used, b80)= 0x8080808080808080LL;
#endif

static uint8_t clip_table[3*256];
static uint8_t * const clip_tab= clip_table + 256;

static const int attribute_used deringThreshold= 20;


static struct PPFilter filters[]=
{
        {"hb", "hdeblock",              1, 1, 3, H_DEBLOCK},
        {"vb", "vdeblock",              1, 2, 4, V_DEBLOCK},
/*      {"hr", "rkhdeblock",            1, 1, 3, H_RK1_FILTER},
        {"vr", "rkvdeblock",            1, 2, 4, V_RK1_FILTER},*/
        {"h1", "x1hdeblock",            1, 1, 3, H_X1_FILTER},
        {"v1", "x1vdeblock",            1, 2, 4, V_X1_FILTER},
        {"ha", "ahdeblock",             1, 1, 3, H_A_DEBLOCK},
        {"va", "avdeblock",             1, 2, 4, V_A_DEBLOCK},
        {"dr", "dering",                1, 5, 6, DERING},
        {"al", "autolevels",            0, 1, 2, LEVEL_FIX},
        {"lb", "linblenddeint",         1, 1, 4, LINEAR_BLEND_DEINT_FILTER},
        {"li", "linipoldeint",          1, 1, 4, LINEAR_IPOL_DEINT_FILTER},
        {"ci", "cubicipoldeint",        1, 1, 4, CUBIC_IPOL_DEINT_FILTER},
        {"md", "mediandeint",           1, 1, 4, MEDIAN_DEINT_FILTER},
        {"fd", "ffmpegdeint",           1, 1, 4, FFMPEG_DEINT_FILTER},
        {"l5", "lowpass5",              1, 1, 4, LOWPASS5_DEINT_FILTER},
        {"tn", "tmpnoise",              1, 7, 8, TEMP_NOISE_FILTER},
        {"fq", "forcequant",            1, 0, 0, FORCE_QUANT},
        {NULL, NULL,0,0,0,0} //End Marker
};

static const char *replaceTable[]=
{
        "default",      "hdeblock:a,vdeblock:a,dering:a",
        "de",           "hdeblock:a,vdeblock:a,dering:a",
        "fast",         "x1hdeblock:a,x1vdeblock:a,dering:a",
        "fa",           "x1hdeblock:a,x1vdeblock:a,dering:a",
        "ac",           "ha:a:128:7,va:a,dering:a",
        NULL //End Marker
};


#if defined(ARCH_X86)
static inline void prefetchnta(void *p)
{
        asm volatile(   "prefetchnta (%0)\n\t"
                : : "r" (p)
        );
}

static inline void prefetcht0(void *p)
{
        asm volatile(   "prefetcht0 (%0)\n\t"
                : : "r" (p)
        );
}

static inline void prefetcht1(void *p)
{
        asm volatile(   "prefetcht1 (%0)\n\t"
                : : "r" (p)
        );
}

static inline void prefetcht2(void *p)
{
        asm volatile(   "prefetcht2 (%0)\n\t"
                : : "r" (p)
        );
}
#endif

// The horizontal Functions exist only in C cuz the MMX code is faster with vertical filters and transposing

/**
 * Check if the given 8x8 Block is mostly "flat"
 */
static inline int isHorizDC_C(uint8_t src[], int stride, PPContext *c)
{
        int numEq= 0;
        int y;
        const int dcOffset= ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1;
        const int dcThreshold= dcOffset*2 + 1;

        for(y=0; y<BLOCK_SIZE; y++)
        {
                if(((unsigned)(src[0] - src[1] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[1] - src[2] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[2] - src[3] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[3] - src[4] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[4] - src[5] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[5] - src[6] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[6] - src[7] + dcOffset)) < dcThreshold) numEq++;
                src+= stride;
        }
        return numEq > c->ppMode.flatnessThreshold;
}

/**
 * Check if the middle 8x8 Block in the given 8x16 block is flat
 */
static inline int isVertDC_C(uint8_t src[], int stride, PPContext *c){
        int numEq= 0;
        int y;
        const int dcOffset= ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1;
        const int dcThreshold= dcOffset*2 + 1;

        src+= stride*4; // src points to begin of the 8x8 Block
        for(y=0; y<BLOCK_SIZE-1; y++)
        {
                if(((unsigned)(src[0] - src[0+stride] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[1] - src[1+stride] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[2] - src[2+stride] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[3] - src[3+stride] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[4] - src[4+stride] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[5] - src[5+stride] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[6] - src[6+stride] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[7] - src[7+stride] + dcOffset)) < dcThreshold) numEq++;
                src+= stride;
        }
        return numEq > c->ppMode.flatnessThreshold;
}

static inline int isHorizMinMaxOk_C(uint8_t src[], int stride, int QP)
{
        int i;
#if 1
        for(i=0; i<2; i++){
                if((unsigned)(src[0] - src[5] + 2*QP) > 4*QP) return 0;
                src += stride;
                if((unsigned)(src[2] - src[7] + 2*QP) > 4*QP) return 0;
                src += stride;
                if((unsigned)(src[4] - src[1] + 2*QP) > 4*QP) return 0;
                src += stride;
                if((unsigned)(src[6] - src[3] + 2*QP) > 4*QP) return 0;
                src += stride;
        }
#else
        for(i=0; i<8; i++){
                if((unsigned)(src[0] - src[7] + 2*QP) > 4*QP) return 0;
                src += stride;
        }
#endif
        return 1;
}

static inline int isVertMinMaxOk_C(uint8_t src[], int stride, int QP)
{
#if 1
#if 1
        int x;
        src+= stride*4;
        for(x=0; x<BLOCK_SIZE; x+=4)
        {
                if((unsigned)(src[  x + 0*stride] - src[  x + 5*stride] + 2*QP) > 4*QP) return 0;
                if((unsigned)(src[1+x + 2*stride] - src[1+x + 7*stride] + 2*QP) > 4*QP) return 0;
                if((unsigned)(src[2+x + 4*stride] - src[2+x + 1*stride] + 2*QP) > 4*QP) return 0;
                if((unsigned)(src[3+x + 6*stride] - src[3+x + 3*stride] + 2*QP) > 4*QP) return 0;
        }
#else
        int x;
        src+= stride*3;
        for(x=0; x<BLOCK_SIZE; x++)
        {
                if((unsigned)(src[x + stride] - src[x + (stride<<3)] + 2*QP) > 4*QP) return 0;
        }
#endif
        return 1;
#else
        int x;
        src+= stride*4;
        for(x=0; x<BLOCK_SIZE; x++)
        {
                int min=255;
                int max=0;
                int y;
                for(y=0; y<8; y++){
                        int v= src[x + y*stride];
                        if(v>max) max=v;
                        if(v<min) min=v;
                }
                if(max-min > 2*QP) return 0;
        }
        return 1;
#endif
}

static inline int horizClassify_C(uint8_t src[], int stride, PPContext *c){
        if( isHorizDC_C(src, stride, c) ){
                if( isHorizMinMaxOk_C(src, stride, c->QP) )
                        return 1;
                else
                        return 0;
        }else{
                return 2;
        }
}

static inline int vertClassify_C(uint8_t src[], int stride, PPContext *c){
        if( isVertDC_C(src, stride, c) ){
                if( isVertMinMaxOk_C(src, stride, c->QP) )
                        return 1;
                else
                        return 0;
        }else{
                return 2;
        }
}

static inline void doHorizDefFilter_C(uint8_t dst[], int stride, PPContext *c)
{
        int y;
        for(y=0; y<BLOCK_SIZE; y++)
        {
                const int middleEnergy= 5*(dst[4] - dst[3]) + 2*(dst[2] - dst[5]);

                if(FFABS(middleEnergy) < 8*c->QP)
                {
                        const int q=(dst[3] - dst[4])/2;
                        const int leftEnergy=  5*(dst[2] - dst[1]) + 2*(dst[0] - dst[3]);
                        const int rightEnergy= 5*(dst[6] - dst[5]) + 2*(dst[4] - dst[7]);

                        int d= FFABS(middleEnergy) - FFMIN( FFABS(leftEnergy), FFABS(rightEnergy) );
                        d= FFMAX(d, 0);

                        d= (5*d + 32) >> 6;
                        d*= FFSIGN(-middleEnergy);

                        if(q>0)
                        {
                                d= d<0 ? 0 : d;
                                d= d>q ? q : d;
                        }
                        else
                        {
                                d= d>0 ? 0 : d;
                                d= d<q ? q : d;
                        }

                        dst[3]-= d;
                        dst[4]+= d;
                }
                dst+= stride;
        }
}

/**
 * Do a horizontal low pass filter on the 10x8 block (dst points to middle 8x8 Block)
 * using the 9-Tap Filter (1,1,2,2,4,2,2,1,1)/16 (C version)
 */
static inline void doHorizLowPass_C(uint8_t dst[], int stride, PPContext *c)
{
        int y;
        for(y=0; y<BLOCK_SIZE; y++)
        {
                const int first= FFABS(dst[-1] - dst[0]) < c->QP ? dst[-1] : dst[0];
                const int last= FFABS(dst[8] - dst[7]) < c->QP ? dst[8] : dst[7];

                int sums[10];
                sums[0] = 4*first + dst[0] + dst[1] + dst[2] + 4;
                sums[1] = sums[0] - first  + dst[3];
                sums[2] = sums[1] - first  + dst[4];
                sums[3] = sums[2] - first  + dst[5];
                sums[4] = sums[3] - first  + dst[6];
                sums[5] = sums[4] - dst[0] + dst[7];
                sums[6] = sums[5] - dst[1] + last;
                sums[7] = sums[6] - dst[2] + last;
                sums[8] = sums[7] - dst[3] + last;
                sums[9] = sums[8] - dst[4] + last;

                dst[0]= (sums[0] + sums[2] + 2*dst[0])>>4;
                dst[1]= (sums[1] + sums[3] + 2*dst[1])>>4;
                dst[2]= (sums[2] + sums[4] + 2*dst[2])>>4;
                dst[3]= (sums[3] + sums[5] + 2*dst[3])>>4;
                dst[4]= (sums[4] + sums[6] + 2*dst[4])>>4;
                dst[5]= (sums[5] + sums[7] + 2*dst[5])>>4;
                dst[6]= (sums[6] + sums[8] + 2*dst[6])>>4;
                dst[7]= (sums[7] + sums[9] + 2*dst[7])>>4;

                dst+= stride;
        }
}

/**
 * Experimental Filter 1 (Horizontal)
 * will not damage linear gradients
 * Flat blocks should look like they where passed through the (1,1,2,2,4,2,2,1,1) 9-Tap filter
 * can only smooth blocks at the expected locations (it cant smooth them if they did move)
 * MMX2 version does correct clipping C version doesnt
 * not identical with the vertical one
 */
static inline void horizX1Filter(uint8_t *src, int stride, int QP)
{
        int y;
        static uint64_t *lut= NULL;
        if(lut==NULL)
        {
                int i;
                lut = av_malloc(256*8);
                for(i=0; i<256; i++)
                {
                        int v= i < 128 ? 2*i : 2*(i-256);
/*
//Simulate 112242211 9-Tap filter
                        uint64_t a= (v/16) & 0xFF;
                        uint64_t b= (v/8) & 0xFF;
                        uint64_t c= (v/4) & 0xFF;
                        uint64_t d= (3*v/8) & 0xFF;
*/
//Simulate piecewise linear interpolation
                        uint64_t a= (v/16) & 0xFF;
                        uint64_t b= (v*3/16) & 0xFF;
                        uint64_t c= (v*5/16) & 0xFF;
                        uint64_t d= (7*v/16) & 0xFF;
                        uint64_t A= (0x100 - a)&0xFF;
                        uint64_t B= (0x100 - b)&0xFF;
                        uint64_t C= (0x100 - c)&0xFF;
                        uint64_t D= (0x100 - c)&0xFF;

                        lut[i]   = (a<<56) | (b<<48) | (c<<40) | (d<<32) |
                                (D<<24) | (C<<16) | (B<<8) | (A);
                        //lut[i] = (v<<32) | (v<<24);
                }
        }

        for(y=0; y<BLOCK_SIZE; y++)
        {
                int a= src[1] - src[2];
                int b= src[3] - src[4];
                int c= src[5] - src[6];

                int d= FFMAX(FFABS(b) - (FFABS(a) + FFABS(c))/2, 0);

                if(d < QP)
                {
                        int v = d * FFSIGN(-b);

                        src[1] +=v/8;
                        src[2] +=v/4;
                        src[3] +=3*v/8;
                        src[4] -=3*v/8;
                        src[5] -=v/4;
                        src[6] -=v/8;

                }
                src+=stride;
        }
}

/**
 * accurate deblock filter
 */
static av_always_inline void do_a_deblock_C(uint8_t *src, int step, int stride, PPContext *c){
        int y;
        const int QP= c->QP;
        const int dcOffset= ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1;
        const int dcThreshold= dcOffset*2 + 1;
//START_TIMER
        src+= step*4; // src points to begin of the 8x8 Block
        for(y=0; y<8; y++){
                int numEq= 0;

                if(((unsigned)(src[-1*step] - src[0*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 0*step] - src[1*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 1*step] - src[2*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 2*step] - src[3*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 3*step] - src[4*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 4*step] - src[5*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 5*step] - src[6*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 6*step] - src[7*step] + dcOffset)) < dcThreshold) numEq++;
                if(((unsigned)(src[ 7*step] - src[8*step] + dcOffset)) < dcThreshold) numEq++;
                if(numEq > c->ppMode.flatnessThreshold){
                        int min, max, x;

                        if(src[0] > src[step]){
                            max= src[0];
                            min= src[step];
                        }else{
                            max= src[step];
                            min= src[0];
                        }
                        for(x=2; x<8; x+=2){
                                if(src[x*step] > src[(x+1)*step]){
                                        if(src[x    *step] > max) max= src[ x   *step];
                                        if(src[(x+1)*step] < min) min= src[(x+1)*step];
                                }else{
                                        if(src[(x+1)*step] > max) max= src[(x+1)*step];
                                        if(src[ x   *step] < min) min= src[ x   *step];
                                }
                        }
                        if(max-min < 2*QP){
                                const int first= FFABS(src[-1*step] - src[0]) < QP ? src[-1*step] : src[0];
                                const int last= FFABS(src[8*step] - src[7*step]) < QP ? src[8*step] : src[7*step];

                                int sums[10];
                                sums[0] = 4*first + src[0*step] + src[1*step] + src[2*step] + 4;
                                sums[1] = sums[0] - first       + src[3*step];
                                sums[2] = sums[1] - first       + src[4*step];
                                sums[3] = sums[2] - first       + src[5*step];
                                sums[4] = sums[3] - first       + src[6*step];
                                sums[5] = sums[4] - src[0*step] + src[7*step];
                                sums[6] = sums[5] - src[1*step] + last;
                                sums[7] = sums[6] - src[2*step] + last;
                                sums[8] = sums[7] - src[3*step] + last;
                                sums[9] = sums[8] - src[4*step] + last;

                                src[0*step]= (sums[0] + sums[2] + 2*src[0*step])>>4;
                                src[1*step]= (sums[1] + sums[3] + 2*src[1*step])>>4;
                                src[2*step]= (sums[2] + sums[4] + 2*src[2*step])>>4;
                                src[3*step]= (sums[3] + sums[5] + 2*src[3*step])>>4;
                                src[4*step]= (sums[4] + sums[6] + 2*src[4*step])>>4;
                                src[5*step]= (sums[5] + sums[7] + 2*src[5*step])>>4;
                                src[6*step]= (sums[6] + sums[8] + 2*src[6*step])>>4;
                                src[7*step]= (sums[7] + sums[9] + 2*src[7*step])>>4;
                        }
                }else{
                        const int middleEnergy= 5*(src[4*step] - src[3*step]) + 2*(src[2*step] - src[5*step]);

                        if(FFABS(middleEnergy) < 8*QP)
                        {
                                const int q=(src[3*step] - src[4*step])/2;
                                const int leftEnergy=  5*(src[2*step] - src[1*step]) + 2*(src[0*step] - src[3*step]);
                                const int rightEnergy= 5*(src[6*step] - src[5*step]) + 2*(src[4*step] - src[7*step]);

                                int d= FFABS(middleEnergy) - FFMIN( FFABS(leftEnergy), FFABS(rightEnergy) );
                                d= FFMAX(d, 0);

                                d= (5*d + 32) >> 6;
                                d*= FFSIGN(-middleEnergy);

                                if(q>0)
                                {
                                        d= d<0 ? 0 : d;
                                        d= d>q ? q : d;
                                }
                                else
                                {
                                        d= d>0 ? 0 : d;
                                        d= d<q ? q : d;
                                }

                                src[3*step]-= d;
                                src[4*step]+= d;
                        }
                }

                src += stride;
        }
/*if(step==16){
    STOP_TIMER("step16")
}else{
    STOP_TIMER("stepX")
}*/
}

//Note: we have C, MMX, MMX2, 3DNOW version there is no 3DNOW+MMX2 one
//Plain C versions
#if !defined (HAVE_MMX) || defined (RUNTIME_CPUDETECT)
#define COMPILE_C
#endif

#ifdef ARCH_POWERPC
#ifdef HAVE_ALTIVEC
#define COMPILE_ALTIVEC
#endif //HAVE_ALTIVEC
#endif //ARCH_POWERPC

#if defined(ARCH_X86)

#if (defined (HAVE_MMX) && !defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
#define COMPILE_MMX
#endif

#if defined (HAVE_MMX2) || defined (RUNTIME_CPUDETECT)
#define COMPILE_MMX2
#endif

#if (defined (HAVE_3DNOW) && !defined (HAVE_MMX2)) || defined (RUNTIME_CPUDETECT)
#define COMPILE_3DNOW
#endif
#endif /* defined(ARCH_X86) */

#undef HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#undef HAVE_ALTIVEC

#ifdef COMPILE_C
#undef HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _C
#include "postprocess_template.c"
#endif

#ifdef ARCH_POWERPC
#ifdef COMPILE_ALTIVEC
#undef RENAME
#define HAVE_ALTIVEC
#define RENAME(a) a ## _altivec
#include "postprocess_altivec_template.c"
#include "postprocess_template.c"
#endif
#endif //ARCH_POWERPC

//MMX versions
#ifdef COMPILE_MMX
#undef RENAME
#define HAVE_MMX
#undef HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _MMX
#include "postprocess_template.c"
#endif

//MMX2 versions
#ifdef COMPILE_MMX2
#undef RENAME
#define HAVE_MMX
#define HAVE_MMX2
#undef HAVE_3DNOW
#define RENAME(a) a ## _MMX2
#include "postprocess_template.c"
#endif

//3DNOW versions
#ifdef COMPILE_3DNOW
#undef RENAME
#define HAVE_MMX
#undef HAVE_MMX2
#define HAVE_3DNOW
#define RENAME(a) a ## _3DNow
#include "postprocess_template.c"
#endif

// minor note: the HAVE_xyz is messed up after that line so dont use it

static inline void postProcess(uint8_t src[], int srcStride, uint8_t dst[], int dstStride, int width, int height,
        QP_STORE_T QPs[], int QPStride, int isColor, pp_mode_t *vm, pp_context_t *vc)
{
        PPContext *c= (PPContext *)vc;
        PPMode *ppMode= (PPMode *)vm;
        c->ppMode= *ppMode; //FIXME

        // useing ifs here as they are faster than function pointers allthough the
        // difference wouldnt be messureable here but its much better because
        // someone might exchange the cpu whithout restarting mplayer ;)
#ifdef RUNTIME_CPUDETECT
#if defined(ARCH_X86)
        // ordered per speed fasterst first
        if(c->cpuCaps & PP_CPU_CAPS_MMX2)
                postProcess_MMX2(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
        else if(c->cpuCaps & PP_CPU_CAPS_3DNOW)
                postProcess_3DNow(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
        else if(c->cpuCaps & PP_CPU_CAPS_MMX)
                postProcess_MMX(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
        else
                postProcess_C(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
#else
#ifdef ARCH_POWERPC
#ifdef HAVE_ALTIVEC
        if(c->cpuCaps & PP_CPU_CAPS_ALTIVEC)
                postProcess_altivec(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
        else
#endif
#endif
                postProcess_C(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
#endif
#else //RUNTIME_CPUDETECT
#ifdef HAVE_MMX2
                postProcess_MMX2(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
#elif defined (HAVE_3DNOW)
                postProcess_3DNow(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
#elif defined (HAVE_MMX)
                postProcess_MMX(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
#elif defined (HAVE_ALTIVEC)
                postProcess_altivec(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
#else
                postProcess_C(src, srcStride, dst, dstStride, width, height, QPs, QPStride, isColor, c);
#endif
#endif //!RUNTIME_CPUDETECT
}

//static void postProcess(uint8_t src[], int srcStride, uint8_t dst[], int dstStride, int width, int height,
//        QP_STORE_T QPs[], int QPStride, int isColor, struct PPMode *ppMode);

/* -pp Command line Help
*/
char *pp_help=
"Available postprocessing filters:\n"
"Filters                        Options\n"
"short  long name       short   long option     Description\n"
"*      *               a       autoq           CPU power dependent enabler\n"
"                       c       chrom           chrominance filtering enabled\n"
"                       y       nochrom         chrominance filtering disabled\n"
"                       n       noluma          luma filtering disabled\n"
"hb     hdeblock        (2 threshold)           horizontal deblocking filter\n"
"       1. difference factor: default=32, higher -> more deblocking\n"
"       2. flatness threshold: default=39, lower -> more deblocking\n"
"                       the h & v deblocking filters share these\n"
"                       so you can't set different thresholds for h / v\n"
"vb     vdeblock        (2 threshold)           vertical deblocking filter\n"
"ha     hadeblock       (2 threshold)           horizontal deblocking filter\n"
"va     vadeblock       (2 threshold)           vertical deblocking filter\n"
"h1     x1hdeblock                              experimental h deblock filter 1\n"
"v1     x1vdeblock                              experimental v deblock filter 1\n"
"dr     dering                                  deringing filter\n"
"al     autolevels                              automatic brightness / contrast\n"
"                       f        fullyrange     stretch luminance to (0..255)\n"
"lb     linblenddeint                           linear blend deinterlacer\n"
"li     linipoldeint                            linear interpolating deinterlace\n"
"ci     cubicipoldeint                          cubic interpolating deinterlacer\n"
"md     mediandeint                             median deinterlacer\n"
"fd     ffmpegdeint                             ffmpeg deinterlacer\n"
"l5     lowpass5                                FIR lowpass deinterlacer\n"
"de     default                                 hb:a,vb:a,dr:a\n"
"fa     fast                                    h1:a,v1:a,dr:a\n"
"ac                                             ha:a:128:7,va:a,dr:a\n"
"tn     tmpnoise        (3 threshold)           temporal noise reducer\n"
"                     1. <= 2. <= 3.            larger -> stronger filtering\n"
"fq     forceQuant      <quantizer>             force quantizer\n"
"Usage:\n"
"<filterName>[:<option>[:<option>...]][[,|/][-]<filterName>[:<option>...]]...\n"
"long form example:\n"
"vdeblock:autoq/hdeblock:autoq/linblenddeint    default,-vdeblock\n"
"short form example:\n"
"vb:a/hb:a/lb                                   de,-vb\n"
"more examples:\n"
"tn:64:128:256\n"
"\n"
;

pp_mode_t *pp_get_mode_by_name_and_quality(char *name, int quality)
{
        char temp[GET_MODE_BUFFER_SIZE];
        char *p= temp;
        const char *filterDelimiters= ",/";
        const char *optionDelimiters= ":";
        struct PPMode *ppMode;
        char *filterToken;

        ppMode= av_malloc(sizeof(PPMode));

        ppMode->lumMode= 0;
        ppMode->chromMode= 0;
        ppMode->maxTmpNoise[0]= 700;
        ppMode->maxTmpNoise[1]= 1500;
        ppMode->maxTmpNoise[2]= 3000;
        ppMode->maxAllowedY= 234;
        ppMode->minAllowedY= 16;
        ppMode->baseDcDiff= 256/8;
        ppMode->flatnessThreshold= 56-16-1;
        ppMode->maxClippedThreshold= 0.01;
        ppMode->error=0;

        strncpy(temp, name, GET_MODE_BUFFER_SIZE);

        av_log(NULL, AV_LOG_DEBUG, "pp: %s\n", name);

        for(;;){
                char *filterName;
                int q= 1000000; //PP_QUALITY_MAX;
                int chrom=-1;
                int luma=-1;
                char *option;
                char *options[OPTIONS_ARRAY_SIZE];
                int i;
                int filterNameOk=0;
                int numOfUnknownOptions=0;
                int enable=1; //does the user want us to enabled or disabled the filter

                filterToken= strtok(p, filterDelimiters);
                if(filterToken == NULL) break;
                p+= strlen(filterToken) + 1; // p points to next filterToken
                filterName= strtok(filterToken, optionDelimiters);
                av_log(NULL, AV_LOG_DEBUG, "pp: %s::%s\n", filterToken, filterName);

                if(*filterName == '-')
                {
                        enable=0;
                        filterName++;
                }

                for(;;){ //for all options
                        option= strtok(NULL, optionDelimiters);
                        if(option == NULL) break;

                        av_log(NULL, AV_LOG_DEBUG, "pp: option: %s\n", option);
                        if(!strcmp("autoq", option) || !strcmp("a", option)) q= quality;
                        else if(!strcmp("nochrom", option) || !strcmp("y", option)) chrom=0;
                        else if(!strcmp("chrom", option) || !strcmp("c", option)) chrom=1;
                        else if(!strcmp("noluma", option) || !strcmp("n", option)) luma=0;
                        else
                        {
                                options[numOfUnknownOptions] = option;
                                numOfUnknownOptions++;
                        }
                        if(numOfUnknownOptions >= OPTIONS_ARRAY_SIZE-1) break;
                }
                options[numOfUnknownOptions] = NULL;

                /* replace stuff from the replace Table */
                for(i=0; replaceTable[2*i]!=NULL; i++)
                {
                        if(!strcmp(replaceTable[2*i], filterName))
                        {
                                int newlen= strlen(replaceTable[2*i + 1]);
                                int plen;
                                int spaceLeft;

                                if(p==NULL) p= temp, *p=0;      //last filter
                                else p--, *p=',';               //not last filter

                                plen= strlen(p);
                                spaceLeft= p - temp + plen;
                                if(spaceLeft + newlen  >= GET_MODE_BUFFER_SIZE)
                                {
                                        ppMode->error++;
                                        break;
                                }
                                memmove(p + newlen, p, plen+1);
                                memcpy(p, replaceTable[2*i + 1], newlen);
                                filterNameOk=1;
                        }
                }

                for(i=0; filters[i].shortName!=NULL; i++)
                {
                        if(   !strcmp(filters[i].longName, filterName)
                           || !strcmp(filters[i].shortName, filterName))
                        {
                                ppMode->lumMode &= ~filters[i].mask;
                                ppMode->chromMode &= ~filters[i].mask;

                                filterNameOk=1;
                                if(!enable) break; // user wants to disable it

                                if(q >= filters[i].minLumQuality && luma)
                                        ppMode->lumMode|= filters[i].mask;
                                if(chrom==1 || (chrom==-1 && filters[i].chromDefault))
                                        if(q >= filters[i].minChromQuality)
                                                ppMode->chromMode|= filters[i].mask;

                                if(filters[i].mask == LEVEL_FIX)
                                {
                                        int o;
                                        ppMode->minAllowedY= 16;
                                        ppMode->maxAllowedY= 234;
                                        for(o=0; options[o]!=NULL; o++)
                                        {
                                                if(  !strcmp(options[o],"fullyrange")
                                                   ||!strcmp(options[o],"f"))
                                                {
                                                        ppMode->minAllowedY= 0;
                                                        ppMode->maxAllowedY= 255;
                                                        numOfUnknownOptions--;
                                                }
                                        }
                                }
                                else if(filters[i].mask == TEMP_NOISE_FILTER)
                                {
                                        int o;
                                        int numOfNoises=0;

                                        for(o=0; options[o]!=NULL; o++)
                                        {
                                                char *tail;
                                                ppMode->maxTmpNoise[numOfNoises]=
                                                        strtol(options[o], &tail, 0);
                                                if(tail!=options[o])
                                                {
                                                        numOfNoises++;
                                                        numOfUnknownOptions--;
                                                        if(numOfNoises >= 3) break;
                                                }
                                        }
                                }
                                else if(filters[i].mask == V_DEBLOCK   || filters[i].mask == H_DEBLOCK
                                     || filters[i].mask == V_A_DEBLOCK || filters[i].mask == H_A_DEBLOCK)
                                {
                                        int o;

                                        for(o=0; options[o]!=NULL && o<2; o++)
                                        {
                                                char *tail;
                                                int val= strtol(options[o], &tail, 0);
                                                if(tail==options[o]) break;

                                                numOfUnknownOptions--;
                                                if(o==0) ppMode->baseDcDiff= val;
                                                else ppMode->flatnessThreshold= val;
                                        }
                                }
                                else if(filters[i].mask == FORCE_QUANT)
                                {
                                        int o;
                                        ppMode->forcedQuant= 15;

                                        for(o=0; options[o]!=NULL && o<1; o++)
                                        {
                                                char *tail;
                                                int val= strtol(options[o], &tail, 0);
                                                if(tail==options[o]) break;

                                                numOfUnknownOptions--;
                                                ppMode->forcedQuant= val;
                                        }
                                }
                        }
                }
                if(!filterNameOk) ppMode->error++;
                ppMode->error += numOfUnknownOptions;
        }

        av_log(NULL, AV_LOG_DEBUG, "pp: lumMode=%X, chromMode=%X\n", ppMode->lumMode, ppMode->chromMode);
        if(ppMode->error)
        {
                av_log(NULL, AV_LOG_ERROR, "%d errors in postprocess string \"%s\"\n", ppMode->error, name);
                av_free(ppMode);
                return NULL;
        }
        return ppMode;
}

void pp_free_mode(pp_mode_t *mode){
    av_free(mode);
}

static void reallocAlign(void **p, int alignment, int size){
        av_free(*p);
        *p= av_mallocz(size);
}

static void reallocBuffers(PPContext *c, int width, int height, int stride, int qpStride){
        int mbWidth = (width+15)>>4;
        int mbHeight= (height+15)>>4;
        int i;

        c->stride= stride;
        c->qpStride= qpStride;

        reallocAlign((void **)&c->tempDst, 8, stride*24);
        reallocAlign((void **)&c->tempSrc, 8, stride*24);
        reallocAlign((void **)&c->tempBlocks, 8, 2*16*8);
        reallocAlign((void **)&c->yHistogram, 8, 256*sizeof(uint64_t));
        for(i=0; i<256; i++)
                c->yHistogram[i]= width*height/64*15/256;

        for(i=0; i<3; i++)
        {
                //Note:the +17*1024 is just there so i dont have to worry about r/w over te end
                reallocAlign((void **)&c->tempBlured[i], 8, stride*mbHeight*16 + 17*1024);
                reallocAlign((void **)&c->tempBluredPast[i], 8, 256*((height+7)&(~7))/2 + 17*1024);//FIXME size
        }

        reallocAlign((void **)&c->deintTemp, 8, 2*width+32);
        reallocAlign((void **)&c->nonBQPTable, 8, qpStride*mbHeight*sizeof(QP_STORE_T));
        reallocAlign((void **)&c->stdQPTable, 8, qpStride*mbHeight*sizeof(QP_STORE_T));
        reallocAlign((void **)&c->forcedQPTable, 8, mbWidth*sizeof(QP_STORE_T));
}

static void global_init(void){
        int i;
        memset(clip_table, 0, 256);
        for(i=256; i<512; i++)
                clip_table[i]= i;
        memset(clip_table+512, 0, 256);
}

static const char * context_to_name(void * ptr) {
    return "postproc";
}

static AVClass av_codec_context_class = { "Postproc", context_to_name, NULL };

pp_context_t *pp_get_context(int width, int height, int cpuCaps){
        PPContext *c= av_malloc(sizeof(PPContext));
        int stride= (width+15)&(~15);    //assumed / will realloc if needed
        int qpStride= (width+15)/16 + 2; //assumed / will realloc if needed

        global_init();

        memset(c, 0, sizeof(PPContext));
        c->av_class = &av_codec_context_class;
        c->cpuCaps= cpuCaps;
        if(cpuCaps&PP_FORMAT){
                c->hChromaSubSample= cpuCaps&0x3;
                c->vChromaSubSample= (cpuCaps>>4)&0x3;
        }else{
                c->hChromaSubSample= 1;
                c->vChromaSubSample= 1;
        }

        reallocBuffers(c, width, height, stride, qpStride);

        c->frameNum=-1;

        return c;
}

void pp_free_context(void *vc){
        PPContext *c = (PPContext*)vc;
        int i;

        for(i=0; i<3; i++) av_free(c->tempBlured[i]);
        for(i=0; i<3; i++) av_free(c->tempBluredPast[i]);

        av_free(c->tempBlocks);
        av_free(c->yHistogram);
        av_free(c->tempDst);
        av_free(c->tempSrc);
        av_free(c->deintTemp);
        av_free(c->stdQPTable);
        av_free(c->nonBQPTable);
        av_free(c->forcedQPTable);

        memset(c, 0, sizeof(PPContext));

        av_free(c);
}

void  pp_postprocess(uint8_t * src[3], int srcStride[3],
                 uint8_t * dst[3], int dstStride[3],
                 int width, int height,
                 QP_STORE_T *QP_store,  int QPStride,
                 pp_mode_t *vm,  void *vc, int pict_type)
{
        int mbWidth = (width+15)>>4;
        int mbHeight= (height+15)>>4;
        PPMode *mode = (PPMode*)vm;
        PPContext *c = (PPContext*)vc;
        int minStride= FFMAX(FFABS(srcStride[0]), FFABS(dstStride[0]));
        int absQPStride = FFABS(QPStride);

        // c->stride and c->QPStride are always positive
        if(c->stride < minStride || c->qpStride < absQPStride)
                reallocBuffers(c, width, height,
                                FFMAX(minStride, c->stride),
                                FFMAX(c->qpStride, absQPStride));

        if(QP_store==NULL || (mode->lumMode & FORCE_QUANT))
        {
                int i;
                QP_store= c->forcedQPTable;
                absQPStride = QPStride = 0;
                if(mode->lumMode & FORCE_QUANT)
                        for(i=0; i<mbWidth; i++) QP_store[i]= mode->forcedQuant;
                else
                        for(i=0; i<mbWidth; i++) QP_store[i]= 1;
        }

        if(pict_type & PP_PICT_TYPE_QP2){
                int i;
                const int count= mbHeight * absQPStride;
                for(i=0; i<(count>>2); i++){
                        ((uint32_t*)c->stdQPTable)[i] = (((uint32_t*)QP_store)[i]>>1) & 0x7F7F7F7F;
                }
                for(i<<=2; i<count; i++){
                        c->stdQPTable[i] = QP_store[i]>>1;
                }
                QP_store= c->stdQPTable;
                QPStride= absQPStride;
        }

if(0){
int x,y;
for(y=0; y<mbHeight; y++){
        for(x=0; x<mbWidth; x++){
                av_log(c, AV_LOG_INFO, "%2d ", QP_store[x + y*QPStride]);
        }
        av_log(c, AV_LOG_INFO, "\n");
}
        av_log(c, AV_LOG_INFO, "\n");
}

        if((pict_type&7)!=3)
        {
                if (QPStride >= 0) {
                        int i;
                        const int count= mbHeight * QPStride;
                        for(i=0; i<(count>>2); i++){
                                ((uint32_t*)c->nonBQPTable)[i] = ((uint32_t*)QP_store)[i] & 0x3F3F3F3F;
                        }
                        for(i<<=2; i<count; i++){
                                c->nonBQPTable[i] = QP_store[i] & 0x3F;
                        }
                } else {
                        int i,j;
                        for(i=0; i<mbHeight; i++) {
                                    for(j=0; j<absQPStride; j++) {
                                        c->nonBQPTable[i*absQPStride+j] = QP_store[i*QPStride+j] & 0x3F;
                                }
                        }
                }
        }

        av_log(c, AV_LOG_DEBUG, "using npp filters 0x%X/0x%X\n",
               mode->lumMode, mode->chromMode);

        postProcess(src[0], srcStride[0], dst[0], dstStride[0],
                width, height, QP_store, QPStride, 0, mode, c);

        width  = (width )>>c->hChromaSubSample;
        height = (height)>>c->vChromaSubSample;

        if(mode->chromMode)
        {
                postProcess(src[1], srcStride[1], dst[1], dstStride[1],
                        width, height, QP_store, QPStride, 1, mode, c);
                postProcess(src[2], srcStride[2], dst[2], dstStride[2],
                        width, height, QP_store, QPStride, 2, mode, c);
        }
        else if(srcStride[1] == dstStride[1] && srcStride[2] == dstStride[2])
        {
                linecpy(dst[1], src[1], height, srcStride[1]);
                linecpy(dst[2], src[2], height, srcStride[2]);
        }
        else
        {
                int y;
                for(y=0; y<height; y++)
                {
                        memcpy(&(dst[1][y*dstStride[1]]), &(src[1][y*srcStride[1]]), width);
                        memcpy(&(dst[2][y*dstStride[2]]), &(src[2][y*srcStride[2]]), width);
                }
        }
}

