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Zeroing pic->motion_val in RV3/4 causes alignment problems on some 64-bit 

architectures since stride is multiple of 4 and not of 8, so split
fill_rectangle() calls to operate on 32-bit words instead of 64-bit ones.

Originally committed as revision 19744 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kostya Shishkov 2009-08-30 06:30:53 +00:00
parent 20622c4a8a
commit b7eb7ef6b5
1 changed files with 12 additions and 7 deletions
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19
libavcodec/rv34.c
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@ -37,6 +37,10 @@
//#define DEBUG
#define ZERO8x2(dst, stride) \
fill_rectangle(dst, 1, 2, stride, 0, 4); \
fill_rectangle(((uint8_t*)(dst))+4, 1, 2, stride, 0, 4); \
/** translation of RV30/40 macroblock types to lavc ones */
static const int rv34_mb_type_to_lavc[12] = {
MB_TYPE_INTRA,
@ -584,8 +588,9 @@ static void rv34_pred_mv_b(RV34DecContext *r, int block_type, int dir)
cur_pic->motion_val[dir][mv_pos + i + j*s->b8_stride][1] = my;
}
}
if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD)
fill_rectangle(cur_pic->motion_val[!dir][mv_pos], 2, 2, s->b8_stride, 0, 4);
if(block_type == RV34_MB_B_BACKWARD || block_type == RV34_MB_B_FORWARD){
ZERO8x2(cur_pic->motion_val[!dir][mv_pos], s->b8_stride);
}
}
/**
@ -806,11 +811,11 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type)
switch(block_type){
case RV34_MB_TYPE_INTRA:
case RV34_MB_TYPE_INTRA16x16:
fill_rectangle(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4);
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
return 0;
case RV34_MB_SKIP:
if(s->pict_type == FF_P_TYPE){
fill_rectangle(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4);
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
rv34_mc_1mv (r, block_type, 0, 0, 0, 2, 2, 0);
break;
}
@ -818,8 +823,8 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type)
//surprisingly, it uses motion scheme from next reference frame
next_bt = s->next_picture_ptr->mb_type[s->mb_x + s->mb_y * s->mb_stride];
if(IS_INTRA(next_bt) || IS_SKIP(next_bt)){
fill_rectangle(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4);
fill_rectangle(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4);
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
ZERO8x2(s->current_picture_ptr->motion_val[1][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
}else
for(j = 0; j < 2; j++)
for(i = 0; i < 2; i++)
@ -830,7 +835,7 @@ static int rv34_decode_mv(RV34DecContext *r, int block_type)
rv34_mc_2mv(r, block_type);
else
rv34_mc_2mv_skip(r);
fill_rectangle(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], 2, 2, s->b8_stride, 0, 4);
ZERO8x2(s->current_picture_ptr->motion_val[0][s->mb_x * 2 + s->mb_y * 2 * s->b8_stride], s->b8_stride);
break;
case RV34_MB_P_16x16:
case RV34_MB_P_MIX16x16: