mirror of https://git.ffmpeg.org/ffmpeg.git
grayscale only encoding
Originally committed as revision 679 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
parent
0398717356
commit
6282185e82
|
@ -1421,12 +1421,17 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
|
|||
get_pixels(s->block[2], ptr + 8 * wrap , wrap);
|
||||
get_pixels(s->block[3], ptr + 8 * wrap + 8, 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);
|
||||
}
|
||||
}else{
|
||||
op_pixels_func *op_pix;
|
||||
qpel_mc_func *op_qpix;
|
||||
|
@ -1466,8 +1471,14 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
|
|||
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);
|
||||
|
||||
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){
|
||||
|
@ -1546,6 +1557,13 @@ static void encode_mb(MpegEncContext *s, int motion_x, int motion_y)
|
|||
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:
|
||||
|
|
Loading…
Reference in New Issue