diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2010-02-18 23:37:48 +0000 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2010-02-18 23:37:48 +0000 |
| commit | a305449df6d95bd22acc95902b4962959de490e1 (patch) | |
| tree | 3ebe08e496382a1fe8677cb0f3132c8af5e5a856 /libavcodec/h264_cabac.c | |
| parent | 8d637124864dcf8bf367ab96e572d6c7cf043675 (diff) | |
Move abs() from decode_cabac_mb_mvd() to the code that writes mvd_cache.
4-8 cycles faster
Originally committed as revision 21887 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/h264_cabac.c')
| -rw-r--r-- | libavcodec/h264_cabac.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/libavcodec/h264_cabac.c b/libavcodec/h264_cabac.c index f672ccf692..b78847eed8 100644 --- a/libavcodec/h264_cabac.c +++ b/libavcodec/h264_cabac.c @@ -910,8 +910,8 @@ static int decode_cabac_mb_ref( H264Context *h, int list, int n ) { } static int decode_cabac_mb_mvd( H264Context *h, int list, int n, int l ) { - int amvd = abs( h->mvd_cache[list][scan8[n] - 1][l] ) + - abs( h->mvd_cache[list][scan8[n] - 8][l] ); + int amvd = h->mvd_cache[list][scan8[n] - 1][l] + + h->mvd_cache[list][scan8[n] - 8][l]; int ctxbase = (l == 0) ? 40 : 47; int mvd; int ctx = (amvd>2) + (amvd>32); @@ -1439,6 +1439,8 @@ decode_intra_mb: my = mpy + decode_cabac_mb_mvd( h, list, index, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); + mpx= abs(mpx-mx); + mpy= abs(mpy-my); if(IS_SUB_8X8(sub_mb_type)){ mv_cache[ 1 ][0]= mv_cache[ 8 ][0]= mv_cache[ 9 ][0]= mx; @@ -1446,27 +1448,27 @@ decode_intra_mb: mv_cache[ 8 ][1]= mv_cache[ 9 ][1]= my; mvd_cache[ 1 ][0]= - mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mx - mpx; + mvd_cache[ 8 ][0]= mvd_cache[ 9 ][0]= mpx; mvd_cache[ 1 ][1]= - mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= my - mpy; + mvd_cache[ 8 ][1]= mvd_cache[ 9 ][1]= mpy; }else if(IS_SUB_8X4(sub_mb_type)){ mv_cache[ 1 ][0]= mx; mv_cache[ 1 ][1]= my; - mvd_cache[ 1 ][0]= mx - mpx; - mvd_cache[ 1 ][1]= my - mpy; + mvd_cache[ 1 ][0]= mpx; + mvd_cache[ 1 ][1]= mpy; }else if(IS_SUB_4X8(sub_mb_type)){ mv_cache[ 8 ][0]= mx; mv_cache[ 8 ][1]= my; - mvd_cache[ 8 ][0]= mx - mpx; - mvd_cache[ 8 ][1]= my - mpy; + mvd_cache[ 8 ][0]= mpx; + mvd_cache[ 8 ][1]= mpy; } mv_cache[ 0 ][0]= mx; mv_cache[ 0 ][1]= my; - mvd_cache[ 0 ][0]= mx - mpx; - mvd_cache[ 0 ][1]= my - mpy; + mvd_cache[ 0 ][0]= mpx; + mvd_cache[ 0 ][1]= mpy; } }else{ uint32_t *p= (uint32_t *)&h->mv_cache[list][ scan8[4*i] ][0]; @@ -1507,7 +1509,7 @@ decode_intra_mb: my = mpy + decode_cabac_mb_mvd( h, list, 0, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); - fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx-mpx,my-mpy), 4); + fill_rectangle(h->mvd_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(abs(mx-mpx),abs(my-mpy)), 4); fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, pack16to32(mx,my), 4); }else fill_rectangle(h->mv_cache[list][ scan8[0] ], 4, 4, 8, 0, 4); @@ -1539,7 +1541,7 @@ decode_intra_mb: my = mpy + decode_cabac_mb_mvd( h, list, 8*i, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); - fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx-mpx,my-mpy), 4); + fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(abs(mx-mpx),abs(my-mpy)), 4); fill_rectangle(h->mv_cache[list][ scan8[0] + 16*i ], 4, 2, 8, pack16to32(mx,my), 4); }else{ fill_rectangle(h->mvd_cache[list][ scan8[0] + 16*i ], 4, 2, 8, 0, 4); @@ -1574,7 +1576,7 @@ decode_intra_mb: my = mpy + decode_cabac_mb_mvd( h, list, 4*i, 1 ); tprintf(s->avctx, "final mv:%d %d\n", mx, my); - fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx-mpx,my-mpy), 4); + fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(abs(mx-mpx),abs(my-mpy)), 4); fill_rectangle(h->mv_cache[list][ scan8[0] + 2*i ], 2, 4, 8, pack16to32(mx,my), 4); }else{ fill_rectangle(h->mvd_cache[list][ scan8[0] + 2*i ], 2, 4, 8, 0, 4); |