virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-13 21:28:01 +02:00
Code Issues Releases Activity

Simplify loop filter a little by using top/left_type.

Browse Source 
Originally committed as revision 21457 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2010-01-26 13:39:26 +00:00
parent 99344d4372
commit d5c30c86d0
1 changed files with 9 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
libavcodec/h264_loopfilter.c
View File

@ -307,15 +307,13 @@ static void av_noinline filter_mb_edgech( uint8_t *pix, int stride, int16_t bS[4
void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint8_t *img_cb, uint8_t *img_cr, unsigned int linesize, unsigned int uvlinesize) {
MpegEncContext * const s = &h->s;
int mb_y_firstrow = s->picture_structure == PICT_BOTTOM_FIELD;
int mb_xy, mb_type;
int mb_xy;
int mb_type;
int qp, qp0, qp1, qpc, qpc0, qpc1, qp_thresh;
mb_xy = h->mb_xy;
if(mb_x==0 || mb_y==mb_y_firstrow || !s->dsp.h264_loop_filter_strength || h->pps.chroma_qp_diff ||
(h->deblocking_filter == 2 && (h->slice_num != h->slice_table[h->top_mb_xy] ||
h->slice_num != h->slice_table[mb_xy - 1]))) {
if(!h->top_type || !h->left_type[0] || !s->dsp.h264_loop_filter_strength || h->pps.chroma_qp_diff) {
ff_h264_filter_mb(h, mb_x, mb_y, img_y, img_cb, img_cr, linesize, uvlinesize);
return;
}
@ -376,16 +374,16 @@ void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y,
int mask_edge1 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16)) ? 3 :
(mb_type & MB_TYPE_16x8) ? 1 : 0;
int mask_edge0 = (mb_type & (MB_TYPE_16x16 | MB_TYPE_8x16))
&& (s->current_picture.mb_type[mb_xy-1] & (MB_TYPE_16x16 | MB_TYPE_8x16))
&& (h->left_type[0] & (MB_TYPE_16x16 | MB_TYPE_8x16))
? 3 : 0;
int step = IS_8x8DCT(mb_type) ? 2 : 1;
edges = (mb_type & MB_TYPE_16x16) && !(h->cbp & 15) ? 1 : 4;
s->dsp.h264_loop_filter_strength( bS, h->non_zero_count_cache, h->ref_cache, h->mv_cache,
h->list_count==2, edges, step, mask_edge0, mask_edge1, FIELD_PICTURE);
}
if( IS_INTRA(s->current_picture.mb_type[mb_xy-1]) )
if( IS_INTRA(h->left_type[0]) )
bSv[0][0] = 0x0004000400040004ULL;
if( IS_INTRA(s->current_picture.mb_type[h->top_mb_xy]) )
if( IS_INTRA(h->top_type) )
bSv[1][0] = FIELD_PICTURE ? 0x0003000300030003ULL : 0x0004000400040004ULL;
#define FILTER(hv,dir,edge)\
@ -423,7 +421,7 @@ static av_always_inline void filter_mb_dir(H264Context *h, int mb_x, int mb_y, u
MpegEncContext * const s = &h->s;
int edge;
const int mbm_xy = dir == 0 ? mb_xy -1 : h->top_mb_xy;
const int mbm_type = s->current_picture.mb_type[mbm_xy];
const int mbm_type = dir == 0 ? h->left_type[0] : h->top_type;
// how often to recheck mv-based bS when iterating between edges
static const uint8_t mask_edge_tab[2][8]={{0,3,3,3,1,1,1,1},
@ -618,9 +616,9 @@ void ff_h264_filter_mb( H264Context *h, int mb_x, int mb_y, uint8_t *img_y, uint
// left mb is in picture
&& h->slice_table[mb_xy-1] != 0xFFFF
// and current and left pair do not have the same interlaced type
&& IS_INTERLACED(mb_type^s->current_picture.mb_type[mb_xy-1])
&& IS_INTERLACED(mb_type^h->left_type[0])
// and left mb is in the same slice if deblocking_filter == 2
&& (h->deblocking_filter!=2 || h->slice_table[mb_xy-1] == h->slice_num)) {
&& h->left_type[0]) {
/* First vertical edge is different in MBAFF frames
* There are 8 different bS to compute and 2 different Qp
*/