#include "png.h"
#include "h263tables.c"
+typedef struct _YUV
+{
+ unsigned char y,u,v;
+} YUV;
+
+typedef struct _VIDEOSTREAM
+{
+ int width;
+ int height;
+ int frame;
+ int linex;
+ YUV*oldpic;
+ YUV*current;
+} VIDEOSTREAM;
-void swf_SetVideoStreamDefine(TAG*tag, U16 frames, U16 width, U16 height)
+void swf_SetVideoStreamDefine(TAG*tag, VIDEOSTREAM*stream, U16 frames, U16 width, U16 height)
{
width=width&~15; height=height&~15;
swf_SetU16(tag, frames);
swf_SetU16(tag, height);
swf_SetU8(tag, 1); /* smoothing on */
swf_SetU8(tag, 2); /* codec = h.263 sorenson spark */
+
+ memset(stream, 0, sizeof(VIDEOSTREAM));
+ stream->linex = width;
+ width&=~15;
+ height&=~15;
+ stream->width = width;
+ stream->height = height;
+ stream->current = (YUV*)malloc(width*height*sizeof(YUV));
+ stream->oldpic = (YUV*)malloc(width*height*sizeof(YUV));
+
+ memset(stream->oldpic, 0, width*height*sizeof(YUV));
}
-struct block_t
+typedef struct _block_t
{
int y1[64];
int y2[64];
int y4[64];
int u[64];
int v[64];
-};
+} block_t;
-struct fblock_t
+typedef struct _fblock_t
{
double y1[64];
double y2[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,
+ 3, 8, 12, 17, 25, 30, 41, 43,
+ 9, 11, 18, 24, 31, 40, 44, 53,
+ 10, 19, 23, 32, 39, 45, 52, 54,
+ 20, 22, 33, 38, 46, 51, 55, 60,
+ 21, 34, 37, 47, 50, 56, 59, 61,
+ 35, 36, 48, 49, 57, 58, 62, 63};
-void zigzag(int*src)
-{
- int table[64] = {
- 0, 1, 5, 6, 14, 15, 27, 28,
- 2, 4, 7, 13, 16, 26, 29, 42,
- 3, 8, 12, 17, 25, 30, 41, 43,
- 9, 11, 18, 24, 31, 40, 44, 53,
- 10, 19, 23, 32, 39, 45, 52, 54,
- 20, 22, 33, 38, 46, 51, 55, 60,
- 21, 34, 37, 47, 50, 56, 59, 61,
- 35, 36, 48, 49, 57, 58, 62, 63};
- int tmp[64];
+static void fzigzag(double*src)
+{
+ double tmp[64];
int t;
for(t=0;t<64;t++) {
- tmp[table[t]] = src[t];
+ ((int*)&tmp[zigzagtable[t]])[0] = ((int*)&src[t])[0];
+ ((int*)&tmp[zigzagtable[t]])[1] = ((int*)&src[t])[1];
}
- memcpy(src, tmp, sizeof(int)*64);
+ memcpy(src, tmp, sizeof(double)*64);
}
#define PI 3.14159265358979
#define SQRT2 1.414214
#define RSQRT2 (1.0/1.414214)
-void dct(double*src)
+static double table[8][8] =
+{
+{0.707106781186548,0.707106781186548,0.707106781186548,0.707106781186548,0.707106781186548,0.707106781186548,0.707106781186548,0.707106781186548},
+{0.980785280403230,0.831469612302545,0.555570233019602,0.195090322016128,-0.195090322016128,-0.555570233019602,-0.831469612302545,-0.980785280403230},
+{0.923879532511287,0.382683432365090,-0.382683432365090,-0.923879532511287,-0.923879532511287,-0.382683432365090,0.382683432365090,0.923879532511287},
+{0.831469612302545,-0.195090322016128,-0.980785280403230,-0.555570233019602,0.555570233019602,0.980785280403230,0.195090322016129,-0.831469612302545},
+{0.707106781186548,-0.707106781186547,-0.707106781186548,0.707106781186547,0.707106781186548,-0.707106781186547,-0.707106781186547,0.707106781186547},
+{0.555570233019602,-0.980785280403230,0.195090322016128,0.831469612302545,-0.831469612302545,-0.195090322016128,0.980785280403231,-0.555570233019602},
+{0.382683432365090,-0.923879532511287,0.923879532511287,-0.382683432365090,-0.382683432365091,0.923879532511287,-0.923879532511286,0.382683432365090},
+{0.195090322016128,-0.555570233019602,0.831469612302545,-0.980785280403231,0.980785280403230,-0.831469612302545,0.555570233019602,-0.195090322016129}
+};
+
+static void dct(double*src)
{
double tmp[64];
- int x,y,u,v;
- for(y=0;y<8;y++)
- for(x=0;x<8;x++)
+ int x,y,u,v,t;
+
+ for(v=0;v<8;v++)
+ for(u=0;u<8;u++)
{
double c = 0;
- for(v=0;v<8;v++)
- for(u=0;u<8;u++)
+ for(x=0;x<8;x++)
{
- double f = 0.25*cos(PI*(2.0*x+1.0)*u/16.0)*cos(PI*(2.0*y+1.0)*v/16.0);
- if(!u) f *= RSQRT2;
- if(!v) f *= RSQRT2;
- c+=f*src[v*8+u];
+ c+=table[u][x]*src[v*8+x];
}
- tmp[y*8+x] = c;
+ tmp[v*8+u] = c;
+ }
+ for(u=0;u<8;u++)
+ for(v=0;v<8;v++)
+ {
+ double c = 0;
+ for(y=0;y<8;y++)
+ {
+ c+=table[v][y]*tmp[y*8+u];
+ }
+ src[v*8+u] = c*0.25;
}
- memcpy(src, tmp, sizeof(double)*64);
}
-void idct(double*src)
+static void idct(double*src)
{
double tmp[64];
int x,y,u,v;
- for(v=0;v<8;v++)
- for(u=0;u<8;u++)
+ for(y=0;y<8;y++)
+ for(x=0;x<8;x++)
{
double c = 0;
- for(y=0;y<8;y++)
- for(x=0;x<8;x++)
+ for(u=0;u<8;u++)
{
- double f = 0.25*cos(PI*(2.0*x+1.0)*u/16.0)*cos(PI*(2.0*y+1.0)*v/16.0);
- if(!u) f *= RSQRT2;
- if(!v) f *= RSQRT2;
- c+=f*src[y*8+x];
+ c+=table[u][x]*src[y*8+u];
}
- tmp[v*8+u] = c;
+ tmp[y*8+x] = c;
}
- memcpy(src, tmp, sizeof(double)*64);
+ for(y=0;y<8;y++)
+ for(x=0;x<8;x++)
+ {
+ double c = 0;
+ for(v=0;v<8;v++)
+ {
+ c+=table[v][y]*tmp[v*8+x];
+ }
+ src[y*8+x] = c*0.25;
+ }
+}
+
+static inline int truncate256(int a)
+{
+ if(a>255) return 255;
+ if(a<0) return 0;
+ return a;
}
-void getregion(struct fblock_t* bb, RGBA*pic, int bx, int by, int width, int height)
+static void getregion(fblock_t* bb, YUV*pic, int bx, int by, int linex)
{
- RGBA*p1 = &pic[by*width*16+bx*16];
- RGBA*p2 = p1;
- int linex = width;
+ YUV*p1 = &pic[by*linex*16+bx*16];
+ YUV*p2 = p1;
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++) {
- double r,g,b;
- r = (p2[x*2].r + p2[x*2+1].r + p2[linex+x*2].r + p2[linex+x*2+1].r)/4.0;
- g = (p2[x*2].g + p2[x*2+1].g + p2[linex+x*2].g + p2[linex+x*2+1].g)/4.0;
- b = (p2[x*2].b + p2[x*2+1].b + p2[linex+x*2].b + p2[linex+x*2+1].b)/4.0;
- bb->u[u++] = (r*-0.169 + g*-0.332 + b*0.500 + 128.0);
- bb->v[v++] = (r*0.500 + g*-0.419 + b*-0.0813 + 128.0);
-
- r = p1[x].r; g = p1[x].g; b = p1[x].b;
- bb->y1[y1++] = (r*0.299 + g*0.587 + b*0.114);
- r = p1[x+8].r; g = p1[x+8].g; b = p1[x+8].b;
- bb->y2[y2++] = (r*0.299 + g*0.587 + b*0.114);
- r = p1[linex*8+x].r; g = p1[linex*8+x].g; b = p1[linex*8+x].b;
- bb->y3[y3++] = (r*0.299 + g*0.587 + b*0.114);
- r = p1[linex*8+x+8].r; g = p1[linex*8+x+8].g; b = p1[linex*8+x+8].b;
- bb->y4[y4++] = (r*0.299 + g*0.587 + b*0.114);
+ 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;
}
}
+static void rgb2yuv(YUV*dest, RGBA*src, int linex, int width, int height)
+{
+ int x,y;
+ for(y=0;y<height;y++) {
+ for(x=0;x<width;x++) {
+ double r,g,b;
+ r = src[y*linex+x].r;
+ g = src[y*linex+x].g;
+ b = src[y*linex+x].b;
+ dest[y*linex+x].y = (r*0.299 + g*0.587 + b*0.114);
+ dest[y*linex+x].u = (r*-0.169 + g*-0.332 + b*0.500 + 128.0);
+ dest[y*linex+x].v = (r*0.500 + g*-0.419 + b*-0.0813 + 128.0);
+ }
+ }
+}
+static void copyregion(VIDEOSTREAM*s, YUV*dest, YUV*src, int bx, int by)
+{
+ YUV*p1 = &src[by*s->linex*16+bx*16];
+ YUV*p2 = &dest[by*s->linex*16+bx*16];
+ int y;
+ for(y=0;y<16;y++) {
+ memcpy(p1, p2, 16*sizeof(YUV));
+ p1+=s->linex;p2+=s->linex;
+ }
+}
+
+static void yuv2rgb(RGBA*dest, YUV*src, int linex, int width, int height)
+{
+ int x,y;
+ for(y=0;y<height;y++) {
+ for(x=0;x<width;x++) {
+ int u,v,yy;
+ u = src[y*linex+x].u;
+ v = src[y*linex+x].v;
+ yy = src[y*linex+x].y;
+ dest[y*linex+x].r = truncate256(yy + ((360*(v-128))>>8));
+ dest[y*linex+x].g = truncate256(yy - ((88*(u-128)+183*(v-128))>>8));
+ dest[y*linex+x].b = truncate256(yy + ((455 * (u-128))>>8));
+ }
+ }
+}
+static void copyblock(VIDEOSTREAM*s, YUV*dest, block_t*b, int bx, int by)
+{
+ YUV*p1 = &dest[(by*16)*s->linex+bx*16];
+ YUV*p2 = &dest[(by*16+8)*s->linex+bx*16];
+ int x,y;
+ for(y=0;y<8;y++) {
+ for(x=0;x<8;x++) {
+ int u,v,yy;
+ p1[x+0].u = b->u[(y/2)*8+(x/2)];
+ p1[x+0].v = b->v[(y/2)*8+(x/2)];
+ p1[x+0].y = b->y1[y*8+x];
+ p1[x+8].u = b->u[(y/2)*8+(x/2)+4];
+ p1[x+8].v = b->v[(y/2)*8+(x/2)+4];
+ p1[x+8].y = b->y2[y*8+x];
+ p2[x+0].u = b->u[(y/2+4)*8+(x/2)];
+ p2[x+0].v = b->v[(y/2+4)*8+(x/2)];
+ p2[x+0].y = b->y3[y*8+x];
+ p2[x+8].u = b->u[(y/2+4)*8+(x/2)+4];
+ p2[x+8].v = b->v[(y/2+4)*8+(x/2)+4];
+ p2[x+8].y = b->y4[y*8+x];
+ }
+ p1+=s->linex;
+ p2+=s->linex;
+ }
+}
-int valtodc(int val)
+static int compareregions(VIDEOSTREAM*s, int bx, int by)
+{
+ int linex = s->width;
+ YUV*p1 = &s->current[by*linex*16+bx*16];
+ YUV*p2 = &s->oldpic[by*linex*16+bx*16];
+ int diff = 0;
+ int x,y;
+ for(y=0;y<16;y++) {
+ for(x=0;x<16;x++) {
+ YUV*m = &p1[x];
+ YUV*n = &p2[x];
+ int y = m->y - n->y;
+ int u = m->u - n->u;
+ int v = m->v - n->v;
+ diff += y*y+(u*u+v*v)/4;
+ }
+ p1+=linex;
+ p2+=linex;
+ }
+ return diff/256;
+}
+
+static int valtodc(int val)
{
assert(val>=0);
/* table 12/h.263 */
+
+ //val+=4; //round
val/=8;
/* TODO: what to do for zero values? skip the block? */
if(val==0)
return 254;
return val;
}
+static int dctoval(int dc)
+{
+ int val;
+ assert(dc>0);
+ assert(dc!=128);
+ assert(dc<256);
+ /* table 12/h.263 */
+ val = dc*8;
+ if(val == 255*8)
+ val = 128*8;
+ return val;
+}
-void codehuffman(TAG*tag, struct huffcode*table, int index)
+static int codehuffman(TAG*tag, struct huffcode*table, int index)
{
/* TODO: !optimize! */
int i=0;
swf_SetBits(tag, 1, 1);
i++;
}
+ return i;
}
-int see=0;
-
-void quantize(double*src, int*dest, int quant, int has_dc)
+static void quantize8x8(double*src, int*dest, int has_dc, int quant)
{
int t,pos=0;
if(has_dc) {
- dest[0] = (int)src[0]; /*DC*/
- dest[0] = valtodc(dest[0]);
+ dest[0] = valtodc((int)src[0]); /*DC*/
pos++;
}
for(t=pos;t<64;t++)
{
dest[t] = (int)src[t];
- //val = (quant*(2*level+1)-1)+quant&1
- if(quant&1) {
- dest[t] = (dest[t]/quant - 1)/2;
- } else {
- dest[t] = ((dest[t]+1)/quant - 1)/2;
+ /* exact: if(quant&1){dest[t] = (dest[t]/quant - 1)/2;}else{dest[t] = ((dest[t]+1)/quant - 1)/2;} */
+ //if(quant&1){dest[t] = (dest[t]/quant - 1)/2;}else{dest[t] = ((dest[t]+1)/quant - 1)/2;}
+ dest[t] = dest[t]/(quant*2);
+ }
+}
+
+static void dequantize8x8(int*b, int has_dc, int quant)
+{
+ int t,pos=0;
+ if(has_dc) {
+ b[0] = dctoval(b[0]); //DC
+ pos++;
+ }
+ for(t=pos;t<64;t++) {
+ if(b[t]) {
+ int sign = 0;
+ if(b[t]<0) {
+ b[t] = -b[t];
+ sign = 1;
+ }
+
+ if(quant&1) {
+ b[t] = quant*(2*b[t]+1); //-7,8,24,40
+ } else {
+ b[t] = quant*(2*b[t]+1)-1; //-8,7,23,39
+ }
+
+ if(sign)
+ b[t] = -b[t];
}
+
+ /* paragraph 6.2.2, "clipping of reconstruction levels": */
+ if(b[t]>2047) b[t]=2047;
+ if(b[t]<-2048) b[t]=-2048;
}
}
-int hascoef(int*b, int has_dc)
+static int hascoef(int*b, int has_dc)
{
int t;
int pos=0;
- int range=2;
if(has_dc)
pos++;
for(t=pos;t<64;t++) {
- if(b[t]<=-range || b[t]>=range)
+ if(b[t])
return 1;
}
return 0;
}
-void encode8x8(TAG*tag, int*bb, int has_dc, int has_tcoef)
+static int coefbits8x8(int*bb, int has_dc)
{
int t;
int pos=0;
+ int bits=0;
+ int last;
+
+ if(has_dc) {
+ bits+=8;
+ pos++;
+ }
+ for(last=63;last>=pos;last--) {
+ if(bb[last])
+ break;
+ }
+ if(last < pos)
+ return bits;
+ while(1) {
+ int run=0, level=0, islast=0,t;
+ while(!bb[pos] && pos<last) {
+ pos++;
+ run++;
+ }
+ if(pos==last)
+ islast=1;
+ level=bb[pos];
+ if(level<0) level=-level;
+ assert(level);
+ for(t=0;t<RLE_ESCAPE;t++) {
+ if(rle_params[t].run == run &&
+ rle_params[t].level == level &&
+ rle_params[t].last == islast) {
+ bits += rle[t].len + 1;
+ break;
+ }
+ }
+ if(t==RLE_ESCAPE) {
+ bits += rle[RLE_ESCAPE].len + 1 + 6 + 8;
+ }
+ if(islast)
+ break;
+ pos++;
+ }
+ return bits;
+}
+
+static void encode8x8(TAG*tag, int*bb, int has_dc, int has_tcoef)
+{
+ int t;
+ int pos=0;
+ int bits=0;
if(has_dc) {
swf_SetBits(tag, bb[0], 8);
int last;
/* determine last non-null coefficient */
for(last=63;last>=pos;last--) {
+ /* TODO: we could leave out small coefficients
+ after a certain point (32?) */
if(bb[last])
break;
}
- assert(bb[last]);
/* blocks without coefficients should not be included
- in the cbpy/cbpc patterns */
+ in the cbpy/cbpc patterns: */
+ assert(bb[last]);
+
while(1) {
int run=0;
int level=0;
if(pos==last)
islast=1;
level=bb[pos];
+ assert(level);
if(level<0) {
level = -level;
sign = 1;
}
for(t=0;t<RLE_ESCAPE;t++) {
+ /* TODO: lookup table */
if(rle_params[t].run == run &&
rle_params[t].level == level &&
rle_params[t].last == islast) {
}
if(t==RLE_ESCAPE) {
codehuffman(tag, rle, RLE_ESCAPE);
+ level=bb[pos];
/* table 14/h.263 */
assert(level);
- if(level<-127) level = -127;
- if(level>127) level = 127;
+ assert(level>=-127);
+ assert(level<=127);
swf_SetBits(tag, islast, 1);
swf_SetBits(tag, run, 6);
- swf_SetBits(tag, level, 8); //fixme
+ swf_SetBits(tag, level, 8); //FIXME: fixme??
}
if(islast)
break;
pos++;
}
+ }
+}
- //codehuffman(tag, rle, 58);
- //swf_SetBits(tag, 1, 1); //sign
+static void dodct(fblock_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);
+}
+
+static void doidct(block_t*b)
+{
+ fblock_t fb;
+ int t;
+ for(t=0;t<64;t++) {
+ fb.y1[t] = b->y1[zigzagtable[t]];
+ fb.y2[t] = b->y2[zigzagtable[t]];
+ fb.y3[t] = b->y3[zigzagtable[t]];
+ fb.y4[t] = b->y4[zigzagtable[t]];
+ fb.u[t] = b->u[zigzagtable[t]];
+ fb.v[t] = b->v[zigzagtable[t]];
+ }
+ idct(fb.y1); idct(fb.y2); idct(fb.y3); idct(fb.y4);
+ idct(fb.u); idct(fb.v);
+ for(t=0;t<64;t++) {
+ b->y1[t] = fb.y1[t];
+ b->y2[t] = fb.y2[t];
+ b->y3[t] = fb.y3[t];
+ b->y4[t] = fb.y4[t];
+ b->u[t] = fb.u[t];
+ b->v[t] = fb.v[t];
+ }
+}
+static void truncateblock(block_t*b)
+{
+ int t;
+ for(t=0;t<64;t++) {
+ b->y1[t] = truncate256(b->y1[t]);
+ b->y2[t] = truncate256(b->y2[t]);
+ b->y3[t] = truncate256(b->y3[t]);
+ b->y4[t] = truncate256(b->y4[t]);
+ b->u[t] = truncate256(b->u[t]);
+ b->v[t] = truncate256(b->v[t]);
}
- see++;
}
-void encode_blockI(TAG*tag, RGBA*pic, int bx, int by, int width, int height, int*quant)
+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)
{
- struct fblock_t b;
- int dquant=0; /* TODO: should we take advantage of the dquant feature?*/
- //int cbpcbits = 3;
- //int cbpybits = 15;
- int cbpcbits = 0;
- int cbpybits = 0;
- int y1[64],y2[64],y3[64],y4[64],u[64],v[64];
+ dequantize8x8(b->y1, has_dc, quant);
+ dequantize8x8(b->y2, has_dc, quant);
+ dequantize8x8(b->y3, has_dc, quant);
+ dequantize8x8(b->y4, has_dc, quant);
+ dequantize8x8(b->u, has_dc, quant);
+ dequantize8x8(b->v, has_dc, quant);
+}
+
+static void getblockpatterns(block_t*b, int*cbpybits,int*cbpcbits, int has_dc)
+{
+ *cbpybits = 0;
+ *cbpcbits = 0;
- getregion(&b, pic, bx, by, width, height);
- dct(b.y1); quantize(b.y1,y1,1,*quant); zigzag(y1); cbpybits|=hascoef(y1, 1)*8;
- dct(b.y2); quantize(b.y2,y2,1,*quant); zigzag(y2); cbpybits|=hascoef(y2, 1)*4;
- dct(b.y3); quantize(b.y3,y3,1,*quant); zigzag(y3); cbpybits|=hascoef(y3, 1)*2;
- dct(b.y4); quantize(b.y4,y4,1,*quant); zigzag(y4); cbpybits|=hascoef(y4, 1)*1;
- dct(b.u); quantize(b.u,u,1,*quant); zigzag(u); cbpcbits|=hascoef(u, 1)*2;
- dct(b.v); quantize(b.v,v,1,*quant); zigzag(v); cbpcbits|=hascoef(v, 1)*1;
+ *cbpybits|=hascoef(b->y1, has_dc)*8;
+ *cbpybits|=hascoef(b->y2, has_dc)*4;
+ *cbpybits|=hascoef(b->y3, has_dc)*2;
+ *cbpybits|=hascoef(b->y4, has_dc)*1;
+
+ *cbpcbits|=hascoef(b->u, has_dc)*2;
+ *cbpcbits|=hascoef(b->v, has_dc)*1;
+}
+
+static void setQuant(TAG*tag, int dquant)
+{
+ int code = 0;
+ /* 00 01 10 11
+ -1 -2 +1 +2
+ */
+ if(dquant == -1) {
+ swf_SetBits(tag, 0x0, 2);
+ } else if(dquant == -2) {
+ swf_SetBits(tag, 0x1, 2);
+ } else if(dquant == +1) {
+ swf_SetBits(tag, 0x2, 2);
+ } else if(dquant == +2) {
+ swf_SetBits(tag, 0x3, 2);
+ } else {
+ assert(0*strlen("invalid dquant"));
+ }
+}
+
+static void change_quant(int quant, int*dquant)
+{
+ /* TODO */
+ *dquant = 0;
+}
+
+static void encode_blockI(TAG*tag, VIDEOSTREAM*s, int bx, int by, int*quant)
+{
+ fblock_t fb;
+ block_t b;
+ int dquant=0;
+ int cbpcbits = 0, cbpybits=0;
+
+ getregion(&fb, s->current, bx, by, s->width);
+ dodct(&fb);
+
+ change_quant(*quant, &dquant);
+ *quant+=dquant;
+ quantize(&fb, &b, 1, *quant);
+
+ //decode_blockI(s, &b, bx, by);
+
+ getblockpatterns(&b, &cbpybits, &cbpcbits, 1);
if(dquant) {
codehuffman(tag, mcbpc_intra, 4+cbpcbits);
} else {
codehuffman(tag, mcbpc_intra, 0+cbpcbits);
}
- //swf_SetBits(tag, 1, 1); /*cbpc-00 mb_type=3 (no bquant), cbc=0*/
- /* if this was an intra frame, we'd need to code (cbpybits^15) */
codehuffman(tag, cbpy, cbpybits);
if(dquant) {
- /* 00 01 10 11
- -1 -2 +1 +2
- */
- swf_SetBits(tag, 0x3, 2);
+ setQuant(tag, dquant);
}
/* luminance */
- encode8x8(tag, y1, 1, cbpybits&8);
- encode8x8(tag, y2, 1, cbpybits&4);
- encode8x8(tag, y3, 1, cbpybits&2);
- encode8x8(tag, y4, 1, cbpybits&1);
- /*swf_SetBits(tag, 0x1, 8);
- swf_SetBits(tag, 0xfe, 8);
- swf_SetBits(tag, 0x1, 8);
- swf_SetBits(tag, 0x1, 8);*/
+ encode8x8(tag, b.y1, 1, cbpybits&8);
+ encode8x8(tag, b.y2, 1, cbpybits&4);
+ encode8x8(tag, b.y3, 1, cbpybits&2);
+ encode8x8(tag, b.y4, 1, cbpybits&1);
/* chrominance */
- encode8x8(tag, u, 1, cbpcbits&2);
- encode8x8(tag, v, 1, cbpcbits&1);
- /*swf_SetBits(tag, 0xfe, 8);
- swf_SetBits(tag, 0xfe, 8);*/
+ encode8x8(tag, b.u, 1, cbpcbits&2);
+ encode8x8(tag, b.v, 1, cbpcbits&1);
+
+ /* reconstruct */
+ dequantize(&b, 1, *quant);
+ doidct(&b);
+ truncateblock(&b);
+ copyblock(s, s->current, &b, bx, by);
}
-void swf_SetVideoStreamIFrame(TAG*tag, RGBA*pic, U16 width, U16 height, int frame)
+static void yuvdiff(fblock_t*a, fblock_t*b)
{
- U32 i32;
- int bx, by, bbx, bby;
- int quant = 9;
+ int t;
+ for(t=0;t<64;t++) {
+ a->y1[t] = (a->y1[t] - b->y1[t]);
+ a->y2[t] = (a->y2[t] - b->y2[t]);
+ a->y3[t] = (a->y3[t] - b->y3[t]);
+ a->y4[t] = (a->y4[t] - b->y4[t]);
+ a->u[t] = (a->u[t] - b->u[t]);
+ a->v[t] = (a->v[t] - b->v[t]);
+ }
+}
- width=width&~15; height=height&~15;
+static int encode_blockP(TAG*tag, VIDEOSTREAM*s, int bx, int by, int*quant)
+{
+ fblock_t fb;
+ block_t b;
+ int dquant=0;
+ int has_mvd=0;
+ int has_mvd24=0;
+ int has_dc=1;
+ int mode = 0;
+ int cbpcbits = 0, cbpybits=0;
+ int diff;
+
+ block_t b_i;
+ int bits_i;
+
+ fblock_t fbold_v00;
+ block_t b_v00;
+ int bits_v00;
+
+ diff = compareregions(s, bx, by);
+ if(diff < 24 /*TODO: should be a parameter- good values are between 32 and 48 */) {
+ swf_SetBits(tag, 1,1); /* cod=1, block skipped */
+ copyregion(s, s->current, s->oldpic, bx, by);
+ return;
+ }
+
+ getregion(&fb, s->current, bx, by, s->width);
+
+ { /* consider I-block */
+ fblock_t fb_i;
+ int y,c;
+ memcpy(&fb_i, &fb, sizeof(fblock_t));
+ dodct(&fb_i);
+ 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 += cbpy[y].len;
+ bits_i += coefbits8x8(b_i.y1, 1);
+ bits_i += coefbits8x8(b_i.y2, 1);
+ bits_i += coefbits8x8(b_i.y3, 1);
+ bits_i += coefbits8x8(b_i.y4, 1);
+ bits_i += coefbits8x8(b_i.u, 1);
+ bits_i += coefbits8x8(b_i.v, 1);
+ }
+ { /* consider mvd(0,0)-block */
+ fblock_t fbdiff;
+ int y,c;
+ memcpy(&fbdiff, &fb, sizeof(fblock_t));
+ getregion(&fbold_v00, s->oldpic, bx, by, s->linex);
+ yuvdiff(&fbdiff, &fbold_v00);
+ dodct(&fbdiff);
+ quantize(&fbdiff, &b_v00, 0, *quant);
+ getblockpatterns(&b_v00, &y, &c, 0);
+ bits_v00 = 1; //cod
+ bits_v00 += mcbpc_inter[0*4+c].len;
+ bits_v00 += cbpy[y^15].len;
+ bits_v00 += mvd[32].len; // (0,0)
+ bits_v00 += mvd[32].len;
+ bits_v00 += coefbits8x8(b_v00.y1, 0);
+ bits_v00 += coefbits8x8(b_v00.y2, 0);
+ bits_v00 += coefbits8x8(b_v00.y3, 0);
+ bits_v00 += coefbits8x8(b_v00.y4, 0);
+ bits_v00 += coefbits8x8(b_v00.u, 0);
+ bits_v00 += coefbits8x8(b_v00.v, 0);
+ }
+
+ if(bits_i > bits_v00)
+ {
+ /* mvd (0,0) block (mode=0) */
+ int t;
+ mode = 0; // mvd w/o mvd24
+ has_dc = 0;
+ memcpy(&b, &b_v00, sizeof(block_t));
+
+ getblockpatterns(&b, &cbpybits, &cbpcbits, has_dc);
+ swf_SetBits(tag,0,1); // COD
+ codehuffman(tag, mcbpc_inter, mode*4+cbpcbits);
+ codehuffman(tag, cbpy, cbpybits^15);
+
+ /* 0,0 */
+ codehuffman(tag, mvd, 32);
+ codehuffman(tag, mvd, 32);
+
+ /* luminance */
+ encode8x8(tag, b.y1, has_dc, cbpybits&8);
+ encode8x8(tag, b.y2, has_dc, cbpybits&4);
+ encode8x8(tag, b.y3, has_dc, cbpybits&2);
+ encode8x8(tag, b.y4, has_dc, cbpybits&1);
+
+ /* chrominance */
+ encode8x8(tag, b.u, has_dc, cbpcbits&2);
+ encode8x8(tag, b.v, has_dc, cbpcbits&1);
+
+ /* -- reconstruction -- */
+ dequantize(&b, 0, *quant);
+ doidct(&b);
+ for(t=0;t<64;t++) {
+ b.y1[t] = truncate256(b.y1[t] + (int)fbold_v00.y1[t]);
+ b.y2[t] = truncate256(b.y2[t] + (int)fbold_v00.y2[t]);
+ b.y3[t] = truncate256(b.y3[t] + (int)fbold_v00.y3[t]);
+ b.y4[t] = truncate256(b.y4[t] + (int)fbold_v00.y4[t]);
+ b.u[t] = truncate256(b.u[t] + (int)fbold_v00.u[t]);
+ b.v[t] = truncate256(b.v[t] + (int)fbold_v00.v[t]);
+ }
+ copyblock(s, s->current, &b, bx, by);
+ return bits_v00;
+ } else {
+ /* i block (mode=3) */
+ mode = 3;
+ has_dc = 1;
+ memcpy(&b, &b_i, sizeof(block_t));
+ //dodct(&fb);
+ //quantize(&fb, &b, has_dc, *quant);
+ getblockpatterns(&b, &cbpybits, &cbpcbits, has_dc);
+ swf_SetBits(tag,0,1); // COD
+ codehuffman(tag, mcbpc_inter, mode*4+cbpcbits);
+ codehuffman(tag, cbpy, cbpybits);
+
+ /* luminance */
+ encode8x8(tag, b.y1, has_dc, cbpybits&8);
+ encode8x8(tag, b.y2, has_dc, cbpybits&4);
+ encode8x8(tag, b.y3, has_dc, cbpybits&2);
+ encode8x8(tag, b.y4, has_dc, cbpybits&1);
+
+ /* chrominance */
+ encode8x8(tag, b.u, has_dc, cbpcbits&2);
+ encode8x8(tag, b.v, has_dc, cbpcbits&1);
+
+ /* -- reconstruction -- */
+ dequantize(&b, 1, *quant);
+ doidct(&b);
+ truncateblock(&b);
+ copyblock(s, s->current, &b, bx, by);
+ return bits_i;
+ }
+
+ exit(1);
+#if 0
+ dodct(&fb);
+ quantize(&fb, &b, has_dc, *quant);
+ getblockpatterns(&b, &cbpybits, &cbpcbits, has_dc);
+
+ if(!dquant && has_mvd && !has_mvd24 && !has_dc) mode = 0;
+ else if(dquant && has_mvd && !has_mvd24 && !has_dc) mode = 1;
+ else if(!dquant && has_mvd && has_mvd24 && !has_dc) mode = 2;
+ else if(!dquant && !has_mvd && !has_mvd24 && has_dc) mode = 3;
+ else if(dquant && !has_mvd && !has_mvd24 && has_dc) mode = 4;
+ else exit(1);
+
+ swf_SetBits(tag,0,1); /* cod - 1 if we're not going to code this block*/
+
+ codehuffman(tag, mcbpc_inter, mode*4+cbpcbits);
+ codehuffman(tag, cbpy, (mode==3 || mode==4)?cbpybits:cbpybits^15);
+
+ if(dquant) {
+ setQuant(tag, dquant);
+ }
+
+ if(has_mvd) {
+ /* 0,0 */
+ codehuffman(tag, mvd, 32);
+ codehuffman(tag, mvd, 32);
+ }
+ if(has_mvd24) {
+ }
+
+ /* luminance */
+ encode8x8(tag, b.y1, has_dc, cbpybits&8);
+ encode8x8(tag, b.y2, has_dc, cbpybits&4);
+ encode8x8(tag, b.y3, has_dc, cbpybits&2);
+ encode8x8(tag, b.y4, has_dc, cbpybits&1);
+
+ /* chrominance */
+ encode8x8(tag, b.u, has_dc, cbpcbits&2);
+ encode8x8(tag, b.v, has_dc, cbpcbits&1);
+#endif
+}
+
+#define TYPE_IFRAME 0
+#define TYPE_PFRAME 1
+
+static void writeHeader(TAG*tag, int width, int height, int frame, int quant, int type)
+{
+ U32 i32;
swf_SetU16(tag, frame);
swf_SetBits(tag, 1, 17); /* picture start code*/
swf_SetBits(tag, 0, 5); /* version=0, version 1 would optimize rle behaviour*/
}
}
- swf_SetBits(tag, 0, 2); /* I-Frame */
+ swf_SetBits(tag, type, 2); /* I-Frame or P-Frame */
swf_SetBits(tag, 0, 1); /* No deblock filter */
+ assert(quant>0);
swf_SetBits(tag, quant, 5); /* quantizer (1-31), may be updated later on*/
swf_SetBits(tag, 0, 1); /* No extra info */
+}
- bbx = (width+15)/16;
- bby = (height+15)/16;
+void swf_SetVideoStreamIFrame(TAG*tag, VIDEOSTREAM*s, RGBA*pic)
+{
+ int bx, by, bbx, bby;
+ int quant = 31;
+
+ writeHeader(tag, s->width, s->height, s->frame, quant, TYPE_IFRAME);
+
+ bbx = (s->width+15)/16; //TODO: move bbx,bby into VIDEOSTREAM
+ bby = (s->height+15)/16;
+
+ rgb2yuv(s->current, pic, s->linex, s->width, s->height);
+
+ for(by=0;by<bby;by++)
+ {
+ for(bx=0;bx<bbx;bx++)
+ {
+ encode_blockI(tag, s, bx, by, &quant);
+ }
+ }
+ s->frame++;
+ memcpy(s->oldpic, s->current, s->width*s->height*sizeof(YUV));
+}
+
+void swf_SetVideoStreamPFrame(TAG*tag, VIDEOSTREAM*s, RGBA*pic)
+{
+ int bx, by, bbx, bby;
+ int quant = 31;
+
+ writeHeader(tag, s->width, s->height, s->frame, quant, TYPE_PFRAME);
+
+ bbx = (s->width+15)/16;
+ bby = (s->height+15)/16;
+
+ rgb2yuv(s->current, pic, s->linex, s->width, s->height);
for(by=0;by<bby;by++)
{
for(bx=0;bx<bbx;bx++)
{
- encode_blockI(tag, pic, bx, by, width, height, &quant);
+ encode_blockP(tag, s, bx, by, &quant);
}
}
+ s->frame++;
+ memcpy(s->oldpic, s->current, s->width*s->height*sizeof(YUV));
+
+ {
+ int t;
+ FILE*fi = fopen("test.ppm", "wb");
+ yuv2rgb(pic, s->current, s->linex, s->width, s->height);
+ fprintf(fi, "P6\n%d %d\n255\n", s->width, s->height);
+ for(t=0;t<s->width*s->height;t++)
+ {
+ fwrite(&pic[t].r, 1, 1, fi);
+ fwrite(&pic[t].g, 1, 1, fi);
+ fwrite(&pic[t].b, 1, 1, fi);
+ }
+ fclose(fi);
+ }
}
-int main()
+int main(int argn, char*argv[])
{
int fi;
int t;
SWF swf;
TAG * tag;
- RGBA* pic, rgb;
+ RGBA* pic, *pic2, rgb;
SWFPLACEOBJECT obj;
int width = 0;
int height = 0;
- int frames = 1;
+ int frames = 2;
+ int framerate = 1;
unsigned char*data;
- char* fname = "/home/kramm/pics/lena.png";
+ char* fname = "/home/kramm/pics/peppers.png";
+ VIDEOSTREAM stream;
+ double d = 1.0;
+
+ memset(&stream, 0, sizeof(stream));
- getimage(fname, &width, &height, &data);
+ getPNG(fname, &width, &height, &data);
pic = (RGBA*)malloc(width*height*sizeof(RGBA));
+ pic2 = (RGBA*)malloc(width*height*sizeof(RGBA));
memcpy(pic, data, width*height*sizeof(RGBA));
free(data);
+
printf("Compressing %s, size %dx%d\n", fname, width, height);
memset(&swf,0,sizeof(SWF));
memset(&obj,0,sizeof(obj));
swf.fileVersion = 6;
- swf.frameRate = 29*256;
+ swf.frameRate = framerate*256;
swf.movieSize.xmax = 20*width;
swf.movieSize.ymax = 20*height;
tag = swf_InsertTag(tag, ST_DEFINEVIDEOSTREAM);
swf_SetU16(tag, 33);
- swf_SetVideoStreamDefine(tag, frames, width, height);
+ swf_SetVideoStreamDefine(tag, &stream, frames, width, height);
for(t=0;t<frames;t++)
{
+ int x,y;
+ double xx,yy;
+ for(y=0,yy=0;y<height;y++,yy+=d) {
+ RGBA*line = &pic[((int)yy)*width];
+ for(x=0,xx=0;x<width;x++,xx+=d) {
+ pic2[y*width+x] = line[((int)xx)];
+ }
+ }
+ printf("frame:%d\n", t);fflush(stdout);
+
tag = swf_InsertTag(tag, ST_VIDEOFRAME);
swf_SetU16(tag, 33);
- swf_SetVideoStreamIFrame(tag, pic, width, height, t);
+ if(t==0)
+ swf_SetVideoStreamIFrame(tag, &stream, pic2);
+ else
+ swf_SetVideoStreamPFrame(tag, &stream, pic2);
tag = swf_InsertTag(tag, ST_PLACEOBJECT2);
swf_GetPlaceObject(0, &obj);
swf_SetPlaceObject(tag,&obj);
tag = swf_InsertTag(tag, ST_SHOWFRAME);
+ d-=0.005;
}
tag = swf_InsertTag(tag, ST_END);
fi = open("video3.swf", O_WRONLY|O_CREAT|O_TRUNC, 0644);
- if(swf_WriteSWF(fi,&swf)<0) {
+ if(swf_WriteSWC(fi,&swf)<0) {
fprintf(stderr,"WriteSWF() failed.\n");
}
close(fi);
git.asbjorn.biz / swftools.git / blobdiff