diff options
| -rw-r--r-- | rMD-exp/src/cache_frame.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/rMD-exp/src/cache_frame.c b/rMD-exp/src/cache_frame.c index d845367..c100505 100644 --- a/rMD-exp/src/cache_frame.c +++ b/rMD-exp/src/cache_frame.c @@ -31,12 +31,18 @@ int CompareBlocks(unsigned char *incoming,unsigned char *old,int blockno,int wid int j,i, block_i=blockno/divisor,//place on the grid block_k=blockno%divisor; + register unsigned char *incoming_reg=&(incoming[block_i*(width*height/divisor)+block_k*width/divisor]), + *old_reg=&(old[block_i*(width*height/divisor)+block_k*width/divisor]); + + for(j=0;j<height/divisor;j++){ + for(i=0;i<width/divisor;i++){ + if((*(incoming_reg++))!=(*(old_reg++))) + return 1; + } + incoming_reg+=(width-width/divisor); + old_reg+=(width-width/divisor); + } - for(j=0;j<height/divisor;j++)//we copy rows - for(i=0;i<width/divisor;i++) - if(incoming[block_i*(width*height/divisor)+j*width+block_k*width/divisor+i]!= - old[block_i*(width*height/divisor)+j*width+block_k*width/divisor+i]) - return 1; return 0; } @@ -44,10 +50,11 @@ void FlushBlock(unsigned char *buf,int blockno,int width, int height,int divisor int j, block_i=blockno/divisor,//place on the grid block_k=blockno%divisor; - - for(j=0;j<height/divisor;j++)//we flush in rows - gzwrite(fp,(void *)&buf[block_i*(width*height/divisor)+j*width+block_k*width/divisor],width/divisor); - + register unsigned char *buf_reg=(&buf[block_i*(width*height/divisor)+block_k*width/divisor]); + for(j=0;j<height/divisor;j++){//we flush in rows + gzwrite(fp,(void *)buf_reg,width/divisor); + buf_reg+=width; + } } void *CacheImageBuffer(void *pdata){ |