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MPEG: support 4:4:4 lowres

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-05-05 21:27:57 +02:00
parent 59b9c75d0e
commit 757ec2d7e7
1 changed files with 29 additions and 12 deletions
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41
libavcodec/mpegvideo.c
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@ -1617,7 +1617,7 @@ static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
uint8_t *ptr_y, *ptr_cb, *ptr_cr;
int mx, my, src_x, src_y, uvsrc_x, uvsrc_y, uvlinesize, linesize, sx, sy, uvsx, uvsy;
const int lowres= s->avctx->lowres;
const int op_index= FFMIN(lowres, 2);
const int op_index= FFMIN(lowres-1+s->chroma_x_shift, 2);
const int block_s= 8>>lowres;
const int s_mask= (2<<lowres)-1;
const int h_edge_pos = s->h_edge_pos >> lowres;
@ -1652,12 +1652,29 @@ static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
uvsrc_x = s->mb_x*block_s + (mx >> lowres);
uvsrc_y = mb_y*block_s + (my >> lowres);
} else {
mx = motion_x / 2;
my = motion_y / 2;
uvsx = mx & s_mask;
uvsy = my & s_mask;
uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
uvsrc_y =( mb_y*block_s>>field_based) + (my >> (lowres+1));
if(s->chroma_y_shift){
mx = motion_x / 2;
my = motion_y / 2;
uvsx = mx & s_mask;
uvsy = my & s_mask;
uvsrc_x = s->mb_x*block_s + (mx >> (lowres+1));
uvsrc_y =( mb_y*block_s>>field_based) + (my >> (lowres+1));
} else {
if(s->chroma_x_shift){
//Chroma422
mx = motion_x / 2;
uvsx = mx & s_mask;
uvsy = motion_y & s_mask;
uvsrc_y = src_y;
uvsrc_x = s->mb_x*2*block_s + (mx >> (lowres+1));
} else {
//Chroma444
uvsx = motion_x & s_mask;
uvsy = motion_y & s_mask;
uvsrc_x = src_x;
uvsrc_y = src_y;
}
}
}
ptr_y = ref_picture[0] + src_y * linesize + src_x;
@ -2163,17 +2180,17 @@ void MPV_decode_mb_internal(MpegEncContext *s, DCTELEM block[12][64],
}else{
//chroma422
dct_linesize = uvlinesize << s->interlaced_dct;
dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*8;
dct_offset =(s->interlaced_dct)? uvlinesize : uvlinesize*block_size;
add_dct(s, block[4], 4, dest_cb, dct_linesize);
add_dct(s, block[5], 5, dest_cr, dct_linesize);
add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize);
add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize);
if(!s->chroma_x_shift){//Chroma444
add_dct(s, block[8], 8, dest_cb+8, dct_linesize);
add_dct(s, block[9], 9, dest_cr+8, dct_linesize);
add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize);
add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize);
add_dct(s, block[8], 8, dest_cb+block_size, dct_linesize);
add_dct(s, block[9], 9, dest_cr+block_size, dct_linesize);
add_dct(s, block[10], 10, dest_cb+block_size+dct_offset, dct_linesize);
add_dct(s, block[11], 11, dest_cr+block_size+dct_offset, dct_linesize);
}
}
}//fi gray