[FFmpeg-cvslog] r21239 - trunk/libavcodec/mpegvideo.c
cehoyos
subversion
Sat Jan 16 11:41:52 CET 2010
Author: cehoyos
Date: Sat Jan 16 11:41:52 2010
New Revision: 21239
Log:
Support lowres 3 when decoding MPEG video.
Patch by Anatoliy Nenashev, nenashev_as mail ru
Modified:
trunk/libavcodec/mpegvideo.c
Modified: trunk/libavcodec/mpegvideo.c
==============================================================================
--- trunk/libavcodec/mpegvideo.c Sat Jan 16 11:10:14 2010 (r21238)
+++ trunk/libavcodec/mpegvideo.c Sat Jan 16 11:41:52 2010 (r21239)
@@ -1416,6 +1416,7 @@ static inline int hpel_motion_lowres(Mpe
int motion_x, int motion_y)
{
const int lowres= s->avctx->lowres;
+ const int op_index= FFMIN(lowres, 2);
const int s_mask= (2<<lowres)-1;
int emu=0;
int sx, sy;
@@ -1440,11 +1441,11 @@ static inline int hpel_motion_lowres(Mpe
emu=1;
}
- sx <<= 2 - lowres;
- sy <<= 2 - lowres;
+ sx= (sx << 2) >> lowres;
+ sy= (sy << 2) >> lowres;
if(field_select)
src += s->linesize;
- pix_op[lowres](dest, src, stride, h, sx, sy);
+ pix_op[op_index](dest, src, stride, h, sx, sy);
return emu;
}
@@ -1458,6 +1459,7 @@ static av_always_inline void mpeg_motion
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 block_s= 8>>lowres;
const int s_mask= (2<<lowres)-1;
const int h_edge_pos = s->h_edge_pos >> lowres;
@@ -1532,15 +1534,15 @@ static av_always_inline void mpeg_motion
ptr_cr+= s->uvlinesize;
}
- sx <<= 2 - lowres;
- sy <<= 2 - lowres;
+ sx= (sx << 2) >> lowres;
+ sy= (sy << 2) >> lowres;
pix_op[lowres-1](dest_y, ptr_y, linesize, h, sx, sy);
if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
- uvsx <<= 2 - lowres;
- uvsy <<= 2 - lowres;
- pix_op[lowres](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
- pix_op[lowres](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
+ uvsx= (uvsx << 2) >> lowres;
+ uvsy= (uvsy << 2) >> lowres;
+ pix_op[op_index](dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
+ pix_op[op_index](dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift, uvsx, uvsy);
}
//FIXME h261 lowres loop filter
}
@@ -1551,6 +1553,7 @@ static inline void chroma_4mv_motion_low
h264_chroma_mc_func *pix_op,
int mx, int my){
const int lowres= s->avctx->lowres;
+ const int op_index= FFMIN(lowres, 2);
const int block_s= 8>>lowres;
const int s_mask= (2<<lowres)-1;
const int h_edge_pos = s->h_edge_pos >> (lowres+1);
@@ -1583,16 +1586,16 @@ static inline void chroma_4mv_motion_low
emu=1;
}
}
- sx <<= 2 - lowres;
- sy <<= 2 - lowres;
- pix_op[lowres](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
+ sx= (sx << 2) >> lowres;
+ sy= (sy << 2) >> lowres;
+ pix_op[op_index](dest_cb, ptr, s->uvlinesize, block_s, sx, sy);
ptr = ref_picture[2] + offset;
if(emu){
ff_emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize, 9, 9, src_x, src_y, h_edge_pos, v_edge_pos);
ptr= s->edge_emu_buffer;
}
- pix_op[lowres](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
+ pix_op[op_index](dest_cr, ptr, s->uvlinesize, block_s, sx, sy);
}
/**
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