get_pixels(s->block[2], ptr + 8 * wrap , wrap);
get_pixels(s->block[3], ptr + 8 * wrap + 8, wrap);
- wrap >>=1;
- ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
- get_pixels(s->block[4], ptr, wrap);
+ if(s->flags&CODEC_FLAG_GRAY){
+ skip_dct[4]= 1;
+ skip_dct[5]= 1;
+ }else{
+ wrap >>=1;
+ ptr = s->new_picture[1] + (mb_y * 8 * wrap) + mb_x * 8;
+ get_pixels(s->block[4], ptr, wrap);
- ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
- get_pixels(s->block[5], ptr, wrap);
+ ptr = s->new_picture[2] + (mb_y * 8 * wrap) + mb_x * 8;
+ get_pixels(s->block[5], ptr, wrap);
+ }
}else{
op_pixels_func *op_pix;
qpel_mc_func *op_qpix;
diff_pixels(s->block[1], ptr_y + 8, dest_y + 8, wrap_y);
diff_pixels(s->block[2], ptr_y + 8 * wrap_y , dest_y + 8 * wrap_y , wrap_y);
diff_pixels(s->block[3], ptr_y + 8 * wrap_y + 8, dest_y + 8 * wrap_y + 8, wrap_y);
- diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
- diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
-
+
+ if(s->flags&CODEC_FLAG_GRAY){
+ skip_dct[4]= 1;
+ skip_dct[5]= 1;
+ }else{
+ diff_pixels(s->block[4], ptr_cb, dest_cb, wrap_c);
+ diff_pixels(s->block[5], ptr_cr, dest_cr, wrap_c);
+ }
+
/* pre quantization */
if(s->mc_mb_var[s->mb_width*mb_y+ mb_x]<2*s->qscale*s->qscale){
if(pix_abs8x8(ptr_y , dest_y , wrap_y) < 20*s->qscale) skip_dct[0]= 1;
dct_single_coeff_elimination(s, i, s->chroma_elim_threshold, 1);
}
+ if((s->flags&CODEC_FLAG_GRAY) && s->mb_intra){
+ s->block_last_index[4]=
+ s->block_last_index[5]= 0;
+ s->block[4][0]=
+ s->block[5][0]= 128;
+ }
+
/* huffman encode */
switch(s->out_format) {
case FMT_MPEG1: