{
int width;
int height;
+ int frame;
RGBA*oldpic;
+ RGBA*current;
} VIDEOSTREAM;
void swf_SetVideoStreamDefine(TAG*tag, VIDEOSTREAM*stream, U16 frames, U16 width, U16 height)
swf_SetU8(tag, 1); /* smoothing on */
swf_SetU8(tag, 2); /* codec = h.263 sorenson spark */
- stream->width = width;
- stream->height = height;
- stream->oldpic = 0;
+ memset(stream, 0, sizeof(VIDEOSTREAM));
+ stream->width = width&~15;
+ stream->height = height&~15;
+ stream->oldpic = (RGBA*)malloc(width*height*sizeof(RGBA));
+
+ memset(stream->oldpic, 0, width*height*sizeof(RGBA));
}
typedef struct _block_t
double v[64];
} fblock_t;
-void fzigzag(double*src)
+static void fzigzag(double*src)
{
int table[64] = {
0, 1, 5, 6, 14, 15, 27, 28,
#define SQRT2 1.414214
#define RSQRT2 (1.0/1.414214)
-double table[8][8] =
+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},
{0.195090322016128,-0.555570233019602,0.831469612302545,-0.980785280403231,0.980785280403230,-0.831469612302545,0.555570233019602,-0.195090322016129}
};
-void dct(double*src)
+static void dct(double*src)
{
double tmp[64];
int x,y,u,v,t;
}
}
-void idct(double*src)
+static void idct(double*src)
{
double tmp[64];
int x,y,u,v;
}
}
-void getregion(fblock_t* bb, RGBA*pic, int bx, int by, int width, int height)
+static void getregion(fblock_t* bb, RGBA*pic, int bx, int by, int width, int height)
{
RGBA*p1 = &pic[by*width*16+bx*16];
RGBA*p2 = p1;
}
}
-int valtodc(int val)
+int compareregions(VIDEOSTREAM*s, int bx, int by)
+{
+ int linex = s->width;
+ RGBA*p1 = &s->current[by*linex*16+bx*16];
+ RGBA*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++) {
+ RGBA*m = &p1[x];
+ RGBA*n = &p2[x];
+ int r = m->r - n->r;
+ int g = m->g - n->g;
+ int b = m->b - n->b;
+ diff += r*r+g*g+b*b;
+ }
+ p1+=linex;
+ p2+=linex;
+ }
+ return diff;
+}
+
+static int valtodc(int val)
{
assert(val>=0);
return val;
}
-void codehuffman(TAG*tag, struct huffcode*table, int index)
+static void codehuffman(TAG*tag, struct huffcode*table, int index)
{
/* TODO: !optimize! */
int i=0;
}
}
-void quantize8x8(double*src, int*dest, int has_dc, int quant)
+static void quantize8x8(double*src, int*dest, int has_dc, int quant)
{
int t,pos=0;
if(has_dc) {
}
}
-int hascoef(int*b, int has_dc)
+static int hascoef(int*b, int has_dc)
{
int t;
int pos=0;
return 0;
}
-void encode8x8(TAG*tag, int*bb, int has_dc, int has_tcoef)
+static void encode8x8(TAG*tag, int*bb, int has_dc, int has_tcoef)
{
int t;
int pos=0;
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;
}
}
-void dodct(fblock_t*fb)
+static void dodct(fblock_t*fb)
{
dct(fb->y1); dct(fb->y2); dct(fb->y3); dct(fb->y4);
dct(fb->u); dct(fb->v);
fzigzag(fb->v);
}
-void quantize(fblock_t*fb, block_t*b, int has_dc, 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->v,b->v,has_dc,quant);
}
-void getblockpatterns(block_t*b, int*cbpybits,int*cbpcbits, int has_dc)
+static void getblockpatterns(block_t*b, int*cbpybits,int*cbpcbits, int has_dc)
{
*cbpybits = 0;
*cbpcbits = 0;
*cbpcbits|=hascoef(b->v, has_dc)*1;
}
-void setQuant(TAG*tag, int dquant)
+static void setQuant(TAG*tag, int dquant)
{
int code = 0;
/* 00 01 10 11
}
}
-void change_quant(int quant, int*dquant)
+static void change_quant(int quant, int*dquant)
{
/* TODO */
*dquant = 0;
}
-void encode_blockI(TAG*tag, RGBA*pic, int bx, int by, int width, int height, int*quant)
+void decode_blockI(VIDEOSTREAM*s, block_t*b, int bx, int by)
+{
+ int x,y;
+ /* FIXME */
+ for(x=0;x<16;x++)
+ for(y=0;y<16;y++) {
+ s->oldpic[(y+by*16)*s->width+(x+bx*16)] = s->current[(y+by*16)*s->width+(x+bx*16)];
+ }
+}
+
+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, pic, bx, by, width, height);
+ getregion(&fb, s->current, bx, by, s->width, s->height);
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) {
encode8x8(tag, b.v, 1, cbpcbits&1);
}
-void encode_blockP(TAG*tag, RGBA*pic, int bx, int by, int width, int height, int*quant)
+void encode_blockP(TAG*tag, VIDEOSTREAM*s, int bx, int by, int*quant)
{
fblock_t fb;
block_t b;
int mode = 0;
int cbpcbits = 0, cbpybits=0;
- getregion(&fb, pic, bx, by, width, height);
+ {
+ int diff;
+ diff = compareregions(s, bx, by);
+ if(diff < 64/*TODO: should be a parameter*/) {
+ swf_SetBits(tag, 1,1); /* cod=1, block skipped */
+ return;
+ }
+ }
+
+ getregion(&fb, s->current, bx, by, s->width, s->height);
dodct(&fb);
change_quant(*quant, &dquant);
swf_SetBits(tag, 0, 1); /* No extra info */
}
-void swf_SetVideoStreamIFrame(TAG*tag, VIDEOSTREAM*s, RGBA*pic, U16 width, U16 height, int frame)
+void swf_SetVideoStreamIFrame(TAG*tag, VIDEOSTREAM*s, RGBA*pic)
{
int bx, by, bbx, bby;
int quant = 7;
- /* TODO: width not divisible by 16 will get us in trouble */
- width=width&~15; height=height&~15;
+ writeHeader(tag, s->width, s->height, s->frame, quant, TYPE_IFRAME);
- writeHeader(tag, width, height, frame, quant, TYPE_IFRAME);
+ bbx = (s->width+15)/16;
+ bby = (s->height+15)/16;
- bbx = (width+15)/16;
- bby = (height+15)/16;
+ s->current = pic;
for(by=0;by<bby;by++)
{
for(bx=0;bx<bbx;bx++)
{
- encode_blockI(tag, pic, bx, by, width, height, &quant);
+ encode_blockI(tag, s, bx, by, &quant);
}
}
+ s->frame++;
}
-void swf_SetVideoStreamPFrame(TAG*tag, VIDEOSTREAM*s, RGBA*pic, U16 width, U16 height, int frame)
+void swf_SetVideoStreamPFrame(TAG*tag, VIDEOSTREAM*s, RGBA*pic)
{
int bx, by, bbx, bby;
int quant = 7;
- /* TODO: width not divisible by 16 will get us in trouble */
- width=width&~15; height=height&~15;
+ writeHeader(tag, s->width, s->height, s->frame, quant, TYPE_PFRAME);
- writeHeader(tag, width, height, frame, quant, TYPE_PFRAME);
+ bbx = (s->width+15)/16;
+ bby = (s->height+15)/16;
- bbx = (width+15)/16;
- bby = (height+15)/16;
+ s->current = pic;
for(by=0;by<bby;by++)
{
for(bx=0;bx<bbx;bx++)
{
- encode_blockP(tag, pic, bx, by, width, height, &quant);
+ encode_blockP(tag, s, bx, by, &quant);
}
}
+ s->frame++;
}
int main(int argn, char*argv[])
int t;
SWF swf;
TAG * tag;
- RGBA* pic, rgb;
+ RGBA* pic, *pic2, rgb;
SWFPLACEOBJECT obj;
int width = 0;
int height = 0;
- int frames = 2;
+ int frames = 100;
unsigned char*data;
char* fname = "/home/kramm/pics/peppers.png";
VIDEOSTREAM stream;
+ double d = 1.0;
memset(&stream, 0, sizeof(stream));
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);
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);
if(t==0)
- swf_SetVideoStreamIFrame(tag, &stream, pic, width, height, t);
+ swf_SetVideoStreamIFrame(tag, &stream, pic2);
else
- swf_SetVideoStreamPFrame(tag, &stream, pic, width, height, t);
+ 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);
git.asbjorn.biz / swftools.git / blobdiff