int v[64];
} block_t;
-typedef struct _fblock_t
-{
- double y1[64];
- double y2[64];
- double y3[64];
- double y4[64];
- double u[64];
- double v[64];
-} fblock_t;
-
static int zigzagtable[64] = {
0, 1, 5, 6, 14, 15, 27, 28,
2, 4, 7, 13, 16, 26, 29, 42,
21, 34, 37, 47, 50, 56, 59, 61,
35, 36, 48, 49, 57, 58, 62, 63};
-static void fzigzag(double*src)
+static void zigzag(int*src)
{
- double tmp[64];
+ int tmp[64];
int t;
for(t=0;t<64;t++) {
- ((int*)&tmp[zigzagtable[t]])[0] = ((int*)&src[t])[0];
- ((int*)&tmp[zigzagtable[t]])[1] = ((int*)&src[t])[1];
+ tmp[zigzagtable[t]] = src[t];
}
- memcpy(src, tmp, sizeof(double)*64);
+ memcpy(src, tmp, sizeof(int)*64);
}
#define PI 3.14159265358979
{0.195090322016128,-0.555570233019602,0.831469612302545,-0.980785280403231,0.980785280403230,-0.831469612302545,0.555570233019602,-0.195090322016129}
};
-static void dct(double*src)
+static void dct(int*src)
{
double tmp[64];
int x,y,u,v,t;
{
c+=table[v][y]*tmp[y*8+u];
}
- src[v*8+u] = c*0.25;
+ src[v*8+u] = (int)(c*0.25);
}
}
-static void idct(double*src)
+static void idct(int*src)
{
double tmp[64];
int x,y,u,v;
{
c+=table[v][y]*tmp[v*8+x];
}
- src[y*8+x] = c*0.25;
+ src[y*8+x] = (int)(c*0.25);
}
}
+static double c[8] = {1.0,
+0.980785280403230, // cos(Pi*1/16), sin(Pi*7/16)
+0.923879532511287, // cos(Pi*2/16), sin(Pi*6/16)
+0.831469612302545, // cos(Pi*3/16), sin(Pi*5/16)
+0.707106781186548, // cos(Pi*4/16), sin(Pi*4/16), 1/sqrt(2)
+0.555570233019602, // cos(Pi*5/16), sin(Pi*3/16)
+0.382683432365090, // cos(Pi*6/16), sin(Pi*2/16)
+0.195090322016128 // cos(Pi*7/16), sin(Pi*1/16)
+};
+
+static double cc[8];
+int ccquant = -1;
+
+static void preparequant(int quant)
+{
+ if(ccquant == quant)
+ return;
+ cc[0] = c[0]/(quant*2*4);
+ cc[1] = c[1]/(quant*2*4);
+ cc[2] = c[2]/(quant*2*4);
+ cc[3] = c[3]/(quant*2*4);
+ cc[4] = c[4]/(quant*2*4);
+ cc[5] = c[5]/(quant*2*4);
+ cc[6] = c[6]/(quant*2*4);
+ cc[7] = c[7]/(quant*2*4);
+ ccquant = quant;
+}
+
+inline static void innerdct(double*a,double*b, double*c)
+{
+ // c1*c7*2 = c6
+ // c2*c6*2 = c4
+ // c3*c5*2 = c2
+ // c4*c4*2 = 1
+
+ //{ 1, 3, 5, 7, -7, -5, -3, -1},
+ //{ 3, -7, -1, -5, 5, 1, 7, -3},
+ //{ 5, -1, 7, 3, -3, -7, 1, -5},
+ //{ 7, -5, 3, -1, 1, -3, 5, -7}
+ double b0,b1,b2,b3,b4,b5;
+ b2 = (a[0]+a[7]);
+ b3 = (a[1]+a[6]);
+ b4 = (a[2]+a[5]);
+ b5 = (a[3]+a[4]);
+
+ b0 = (b2+b5)*c[4];
+ b1 = (b3+b4)*c[4];
+ b[0*8] = b0 + b1;
+ b[4*8] = b0 - b1;
+ b[2*8] = (b2-b5)*c[2] + (b3-b4)*c[6];
+ b[6*8] = (b2-b5)*c[6] + (b4-b3)*c[2];
+
+ b0 = (a[0]-a[7]);
+ b1 = (a[1]-a[6]);
+ b2 = (a[2]-a[5]);
+ b3 = (a[3]-a[4]);
+
+ b[1*8] = b0*c[1] + b1*c[3] + b2*c[5] + b3*c[7];
+ b[3*8] = b0*c[3] - b1*c[7] - b2*c[1] - b3*c[5];
+ b[5*8] = b0*c[5] - b1*c[1] + b2*c[7] + b3*c[3];
+ b[7*8] = b0*c[7] - b1*c[5] + b2*c[3] - b3*c[1];
+}
+
+static void dct2(int*src, int*dest)
+{
+ double tmp[64], tmp2[64];
+ double*p;
+ int u,x,v,t;
+
+ for(t=0;t<64;t++)
+ tmp2[t] = src[t];
+
+ for(v=0;v<8;v++)
+ {
+ double* a=&tmp2[v*8];
+ double* b=&tmp[v];
+ innerdct(a,b,c);
+ }
+ for(v=0;v<8;v++)
+ {
+ double* a=&tmp[v*8];
+ double* b=&tmp2[v];
+ innerdct(a,b,cc);
+ }
+ for(t=0;t<64;t++) {
+ dest[zigzagtable[t]] = (int)(tmp2[t]);
+ }
+}
+
+
static inline int truncate256(int a)
{
if(a>255) return 255;
return a;
}
-static void getregion(fblock_t* bb, YUV*pic, int posx, int posy, int linex)
+static void getregion(block_t* bb, YUV*pic, int posx, int posy, int linex)
{
- YUV*p1 = &pic[posy*linex+posx];
- YUV*p2 = p1;
+ YUV*p1;
+ YUV*p2;
int y1=0, y2=0, y3=0, y4=0;
int u=0,v=0;
int x,y;
- for(y=0;y<8;y++) {
- for(x=0;x<8;x++) {
- bb->u[u++] = (p2[x*2].u + p2[x*2+1].u + p2[linex+x*2].u + p2[linex+x*2+1].u)/4;
- bb->v[v++] = (p2[x*2].v + p2[x*2+1].v + p2[linex+x*2].v + p2[linex+x*2+1].v)/4;
- bb->y1[y1++] = p1[x].y;
- bb->y2[y2++] = p1[x+8].y;
- bb->y3[y3++] = p1[linex*8+x].y;
- bb->y4[y4++] = p1[linex*8+x+8].y;
+ int hp = (posy&1)<<1|(posx&1);
+ posx>>=1;
+ posy>>=1;
+ p1 = &pic[posy*linex+posx];
+ p2 = p1;
+ if(hp==0x0) {
+ for(y=0;y<8;y++) {
+ for(x=0;x<8;x++) {
+ bb->u[u++] = (p2[x*2].u + p2[x*2+1].u + p2[linex+x*2].u + p2[linex+x*2+1].u)/4;
+ bb->v[v++] = (p2[x*2].v + p2[x*2+1].v + p2[linex+x*2].v + p2[linex+x*2+1].v)/4;
+ bb->y1[y1++] = p1[x].y;
+ bb->y2[y2++] = p1[x+8].y;
+ bb->y3[y3++] = p1[linex*8+x].y;
+ bb->y4[y4++] = p1[linex*8+x+8].y;
+ }
+ p1+=linex;
+ p2+=linex*2;
+ }
+ } else if(hp==0x1) {
+ for(y=0;y<8;y++) {
+ for(x=0;x<8;x++) {
+ bb->u[u++] = (p2[x*2].u + p2[x*2+1].u + p2[linex+x*2].u + p2[linex+x*2+1].u)/4;
+ bb->v[v++] = (p2[x*2].v + p2[x*2+1].v + p2[linex+x*2].v + p2[linex+x*2+1].v)/4;
+ bb->y1[y1++] = (p1[x].y + p1[x+1].y)/2;
+ bb->y2[y2++] = (p1[x+8].y + p1[x+8+1].y)/2;
+ bb->y3[y3++] = (p1[linex*8+x].y + p1[linex*8+x+1].y)/2;
+ bb->y4[y4++] = (p1[linex*8+x+8].y + p1[linex*8+x+8+1].y)/2;
+ }
+ p1+=linex;
+ p2+=linex*2;
}
- p1+=linex;
- p2+=linex*2;
}
+ else
+ assert(0);
}
static void rgb2yuv(YUV*dest, RGBA*src, int dlinex, int slinex, int width, int height)
{
return i;
}
-static void quantize8x8(double*src, int*dest, int has_dc, int quant)
+static void quantize8x8(int*src, int*dest, int has_dc, int quant)
{
int t,pos=0;
double q = 1.0/(quant*2);
}
}
-static void dodct(fblock_t*fb)
+static void quantize(block_t*fb, block_t*b, int has_dc, int quant)
+{
+ quantize8x8(fb->y1, b->y1, has_dc, quant);
+ quantize8x8(fb->y2, b->y2, has_dc, quant);
+ quantize8x8(fb->y3, b->y3, has_dc, quant);
+ quantize8x8(fb->y4, b->y4, has_dc, quant);
+ quantize8x8(fb->u, b->u, has_dc, quant);
+ quantize8x8(fb->v, b->v, has_dc, quant);
+}
+
+static void dodct(block_t*fb)
{
- int t;
dct(fb->y1); dct(fb->y2); dct(fb->y3); dct(fb->y4);
dct(fb->u); dct(fb->v);
- fzigzag(fb->y1);
- fzigzag(fb->y2);
- fzigzag(fb->y3);
- fzigzag(fb->y4);
- fzigzag(fb->u);
- fzigzag(fb->v);
+ zigzag(fb->y1);
+ zigzag(fb->y2);
+ zigzag(fb->y3);
+ zigzag(fb->y4);
+ zigzag(fb->u);
+ zigzag(fb->v);
+}
+static void dodctandquant(block_t*fb, block_t*b, int has_dc, int quant)
+{
+ int t;
+ if(has_dc) {
+ dodct(fb);
+ quantize(fb,b,has_dc,quant);
+ return;
+ }
+ preparequant(quant);
+ dct2(fb->y1,b->y1); dct2(fb->y2,b->y2); dct2(fb->y3,b->y3); dct2(fb->y4,b->y4);
+ dct2(fb->u,b->u); dct2(fb->v,b->v);
}
static void doidct(block_t*b)
{
- fblock_t fb;
+ block_t fb;
int t;
for(t=0;t<64;t++) {
fb.y1[t] = b->y1[zigzagtable[t]];
}
}
-static void quantize(fblock_t*fb, block_t*b, int has_dc, int quant)
-{
- quantize8x8(fb->y1, b->y1, has_dc, quant);
- quantize8x8(fb->y2, b->y2, has_dc, quant);
- quantize8x8(fb->y3, b->y3, has_dc, quant);
- quantize8x8(fb->y4, b->y4, has_dc, quant);
- quantize8x8(fb->u, b->u, has_dc, quant);
- quantize8x8(fb->v, b->v, has_dc, quant);
-}
static void dequantize(block_t*b, int has_dc, int quant)
{
dequantize8x8(b->y1, has_dc, quant);
static void encode_blockI(TAG*tag, VIDEOSTREAM*s, int bx, int by, int*quant)
{
- fblock_t fb;
+ block_t fb;
block_t b;
int dquant=0;
int cbpcbits = 0, cbpybits=0;
- getregion(&fb, s->current, bx*16, by*16, s->width);
- dodct(&fb);
+ getregion(&fb, s->current, bx*2*16, by*2*16, s->width);
change_quant(*quant, &dquant);
*quant+=dquant;
- quantize(&fb, &b, 1, *quant);
+
+ dodctandquant(&fb, &b, 1, *quant);
+ //quantize(&fb, &b, 1, *quant);
//decode_blockI(s, &b, bx, by);
copyblock(s, s->current, &b, bx, by);
}
-static void yuvdiff(fblock_t*a, fblock_t*b)
+static void yuvdiff(block_t*a, block_t*b)
{
int t;
for(t=0;t<64;t++) {
static int encode_blockP(TAG*tag, VIDEOSTREAM*s, int bx, int by, int*quant)
{
- fblock_t fb;
+ block_t fb;
block_t b;
int dquant=0;
int has_mvd=0;
block_t b_i;
int bits_i;
- fblock_t fbold_v00;
+ block_t fbold_v00;
block_t b_v00;
int bits_v00 = 65535;
int x_v00=0;
}
predictmvd(s,bx,by,&predictmvdx,&predictmvdy);
- getregion(&fb, s->current, bx*16, by*16, s->width);
+ getregion(&fb, s->current, bx*2*16, by*2*16, s->width);
{ /* consider I-block */
- fblock_t fb_i;
+ block_t fb_i;
int y,c;
- memcpy(&fb_i, &fb, sizeof(fblock_t));
- dodct(&fb_i);
- quantize(&fb_i, &b_i, 1, *quant);
+ memcpy(&fb_i, &fb, sizeof(block_t));
+ dodctandquant(&fb_i, &b_i, 1, *quant);
+ //quantize(&fb_i, &b_i, 1, *quant);
getblockpatterns(&b_i, &y, &c, 1);
bits_i = 1; //cod
bits_i += mcbpc_inter[3*4+c].len;
bits_i += coefbits8x8(b_i.v, 1);
}
- if(bx&&by&&(bx<s->bbx-1)&&(by<s->bby-1))
{ /* consider mvd(x,y)-block */
- fblock_t fbdiff;
+ block_t fbdiff;
int y,c;
x_v00=0;
if(s->do_motion) {
int hx,hy;
int bestx=0,besty=0,bestbits=65536;
+ int startx=-8,endx=8;
+ int starty=-8,endy=8;
+
+ if(!bx) startx=0;
+ if(!by) starty=0;
+ if(bx==s->bbx-1) endx=0;
+ if(by==s->bby-1) endy=0;
- for(hx=-8;hx<8;hx+=4)
- for(hy=-8;hy<8;hy+=4)
+ for(hx=startx;hx<=endx;hx+=4)
+ for(hy=starty;hy<=endy;hy+=4)
{
block_t b;
- fblock_t fbold;
+ block_t fbold;
int bits = 0;
- memcpy(&fbdiff, &fb, sizeof(fblock_t));
- getregion(&fbold, s->oldpic, bx*16+hx/2, by*16+hy/2, s->linex);
+ memcpy(&fbdiff, &fb, sizeof(block_t));
+ getregion(&fbold, s->oldpic, bx*2*16+hx, by*2*16+hy, s->linex);
yuvdiff(&fbdiff, &fbold);
- dodct(&fbdiff);
- quantize(&fbdiff, &b, 0, *quant);
+ dodctandquant(&fbdiff, &b, 0, *quant);
+ //quantize(&fbdiff, &b, 0, *quant);
bits += coefbits8x8(b.y1, 0);
bits += coefbits8x8(b.y2, 0);
bits += coefbits8x8(b.y3, 0);
y_v00 = besty;
}
- memcpy(&fbdiff, &fb, sizeof(fblock_t));
- getregion(&fbold_v00, s->oldpic, bx*16+x_v00/2, by*16+y_v00/2, s->linex);
+ memcpy(&fbdiff, &fb, sizeof(block_t));
+ getregion(&fbold_v00, s->oldpic, bx*2*16+x_v00, by*2*16+y_v00, s->linex);
yuvdiff(&fbdiff, &fbold_v00);
- dodct(&fbdiff);
- quantize(&fbdiff, &b_v00, 0, *quant);
+ dodctandquant(&fbdiff, &b_v00, 0, *quant);
+ //quantize(&fbdiff, &b_v00, 0, *quant);
getblockpatterns(&b_v00, &y, &c, 0);
bits_v00 = 1; //cod
swf_SetBits(tag, quant, 5); /* quantizer (1-31), may be updated later on*/
swf_SetBits(tag, 0, 1); /* No extra info */
}
-
-int stat_qdiff(double*b1, double*b2)
-{
- int x;
- double diff=0;
- for(x=0;x<64;x++) {
- double y1 = b1[x] - b2[x];
- diff += y1*y1;
- }
- return (int)(diff/64);
-}
-
-int stat_absdiff(double*b1, double*b2)
-{
- int x;
- double diff=0;
- for(x=0;x<64;x++) {
- double y1 = b1[x] - b2[x];
- diff += fabs(y1);
- }
- return (int)(diff/64);
-}
-
-int stat_absfreq(double*b1, double*b2)
-{
- int x;
- double diff=0;
- double d1[64],d2[64];
- memcpy(&d1, b1, 64*sizeof(double));
- dct(d1);
- memcpy(&d2, b2, 64*sizeof(double));
- dct(d2);
- for(x=0;x<64;x++) {
- double y1 = d1[x] - d2[x];
- diff += fabs(y1);
- }
- return (int)(diff/64);
-}
-
-int stat_qfreq(double*b1, double*b2)
-{
- int x;
- double diff=0;
- double d1[64],d2[64];
- memcpy(&d1, b1, 64*sizeof(double));
- dct(d1);
- memcpy(&d2, b2, 64*sizeof(double));
- dct(d2);
- for(x=0;x<64;x++) {
- double y1 = d1[x] - d2[x];
- diff += y1*y1;
- }
- return (int)(diff/64);
-}
-
-int stat_nonnull(double*b1, double*b2)
-{
- int x;
- int diff=0;
- double d1[64],d2[64];
- memcpy(&d1, b1, 64*sizeof(double));
- dct(d1);
- memcpy(&d2, b2, 64*sizeof(double));
- dct(d2);
- for(x=0;x<64;x++) {
- int y1 = (int)((d1[x] - d2[x])/9);
- if(y1)
- diff++;
- }
- return diff;
-}
-
-void stat_filter(FILE*fi, double*d1, double*d2)
-{
- int x,y,xx,yy,b;
- for(b=3;b>=0;b--) {
- int d = 1<<b;
- double diff=0;
- for(x=0;x<8;x+=d)
- for(y=0;y<8;y+=d)
- {
- double add1=0,add2=0;
- for(xx=x;xx<x+d;xx++)
- for(yy=y;yy<y+d;yy++)
- {
- add1 += d1[yy*8+xx];
- add2 += d2[yy*8+xx];
- }
- diff += fabs(add1-add2);
- }
- fprintf(fi, "\t%d",(int)(diff/64));
- }
-}
-
-void qstat_filter(FILE*fi, double*d1, double*d2)
-{
- int x,y,xx,yy,b;
- for(b=3;b>=0;b--) {
- int d = 1<<b;
- double diff=0;
- for(x=0;x<8;x+=d)
- for(y=0;y<8;y+=d)
- {
- double add1=0,add2=0;
- for(xx=x;xx<x+d;xx++)
- for(yy=y;yy<y+d;yy++)
- {
- add1 += d1[yy*8+xx];
- add2 += d2[yy*8+xx];
- }
- diff += (add1-add2)*(add1-add2);
- }
- fprintf(fi, "\t%d",(int)(diff/64));
- }
-}
-
-void qqstat_filter(FILE*fi, double*d1, double*d2)
-{
- int x,y,xx,yy,b;
- for(b=3;b>=0;b--) {
- int d = 1<<b;
- double diff=0;
- for(x=0;x<8;x+=d)
- for(y=0;y<8;y+=d)
- {
- double add1=0,add2=0;
- for(xx=x;xx<x+d;xx++)
- for(yy=y;yy<y+d;yy++)
- {
- add1 += d1[yy*8+xx]*d1[yy*8+xx];
- add2 += d2[yy*8+xx]*d2[yy*8+xx];
- }
- diff += fabs(add1-add2);
- }
- fprintf(fi, "\t%d",(int)(diff/64));
- }
-}
-
-void stat(FILE*fi, int*vals, double*yold, double*ynew)
-{
- int t;
- int bits = coefbits8x8(vals, 0);
- fprintf(fi, "%d\t%d\t%d\t%d\t%d\t%d", bits,
- stat_nonnull(ynew, yold),
- stat_qdiff(ynew,yold),
- stat_absdiff(ynew,yold),
- stat_absfreq(ynew,yold),
- stat_qfreq(ynew,yold));
- stat_filter(fi, ynew, yold);
- qqstat_filter(fi, ynew, yold);
- fprintf(fi, "\n");
-}
-
-void dostat(VIDEOSTREAM*s)
-{
- int bx,by,bx2,by2;
- int quant = 9;
- int num = 0;
- FILE*fi = fopen("mvd.dat", "wb");
- fprintf(fi, "bits\tnonnull\tqdiff\tabsdiff\tabsfreq\tqfreq\tf1\tf2\tf4\tf8\tqf1\tqf2\tqf4\tqf8\n");
- for(by=0;by<s->bby;by++)
- for(bx=0;bx<s->bbx;bx++)
- {
- for(by2=0;by2<s->bby;by2++)
- for(bx2=0;bx2<bx;bx2++)
- {
- fblock_t fbnew,fbdiff,fbold;
- block_t b;
- int t, y,c,bits;
- getregion(&fbnew, s->current, bx*16, by*16, s->linex);
- memcpy(&fbdiff, &fbnew, sizeof(fblock_t));
- getregion(&fbold, s->current, bx2*16, by2*16, s->linex);
- yuvdiff(&fbdiff, &fbold);
- dodct(&fbdiff);
- quantize(&fbdiff, &b, 0, quant);
-
- stat(fi, b.y1, fbnew.y1, fbold.y1);
- stat(fi, b.y2, fbnew.y2, fbold.y2);
- stat(fi, b.y3, fbnew.y3, fbold.y3);
- stat(fi, b.y4, fbnew.y4, fbold.y4);
- stat(fi, b.u, fbnew.u, fbold.u);
- stat(fi, b.v, fbnew.v, fbold.v);
-
- num++;
- if(num==1000) {
- fclose(fi);
- exit(7);
- }
- }
- printf("%d\n", num);fflush(stdout);
- }
- fclose(fi);
- exit(7);
-}
-
void swf_SetVideoStreamIFrame(TAG*tag, VIDEOSTREAM*s, RGBA*pic, int quant)
{
int bx, by;
SWFPLACEOBJECT obj;
int width = 0;
int height = 0;
- int frames = 50;
+ int frames = 5;
int framerate = 29;
unsigned char*data;
char* fname = "/home/kramm/pics/peppers.png";
git.asbjorn.biz / swftools.git / blobdiff