+ getregion(&fb, s->current, bx, by, s->width);
+
+ //if(diff < 128)
+ if(1)
+ {
+ /* mvd (0,0) block (mode=0) */
+ int t;
+ memcpy(&fbdiff, &fb, sizeof(fblock_t));
+ getregion(&fbold, s->oldpic, bx, by, s->linex);
+ yuvdiff(&fbdiff, &fbold);
+ //getregiondiff(&fbdiff, s->oldpic, s->current, bx, by, s->linex);
+ dodct(&fbdiff);
+ has_dc = 0;
+
+ quantize(&fbdiff, &b, has_dc, *quant);
+ getblockpatterns(&b, &cbpybits, &cbpcbits, has_dc);
+ mode = 0; // mvd w/o mvd24
+ 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.y1[t]);
+ b.y2[t] = truncate256(b.y2[t] + (int)fbold.y2[t]);
+ b.y3[t] = truncate256(b.y3[t] + (int)fbold.y3[t]);
+ b.y4[t] = truncate256(b.y4[t] + (int)fbold.y4[t]);
+ b.u[t] = truncate256(b.u[t] + (int)fbold.u[t]);
+ b.v[t] = truncate256(b.v[t] + (int)fbold.v[t]);
+ }
+ copyblock(s, s->current, &b, bx, by);
+ return;
+ } else {
+ /* i block (mode=3) */
+ mode = 3;
+ has_dc = 1;
+ 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);
+
+ dequantize(&b, 1, *quant);
+ doidct(&b);
+ truncateblock(&b);
+ copyblock(s, s->current, &b, bx, by);
+ return;
+ }
+
+ 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;