照片象IPHONE的机子一样移动的效果代码(左往右移)

//照片象IPHONE的机子一样移动的效果代码(左往右移)
U8 temp_row_buffer2[LCD_WIDTH*2*2];
static U8 temp_col_buffer2[LCD_HEIGHT*2*2];

void test_draw_move_l2r(int offset)
{
    PU8 pBaseLayerPtr;  //OSD layer pointer;
    PU8 pCacheLayerPtr; //Back Image layer pointer;
    PU8 pThumbLayerPtr;
    PU8 pBasePos;
    PU8 pCachePos;
    PU8 pThumbPos;
       PU8 pCopyPtr;
    PU8 pTempPtr;

       int row,col;
    gdi_layer_get_buffer_ptr(&pBaseLayerPtr);

       gdi_layer_push_and_set_active(g_imgadv_cntx.cache_layer_handle);
    gdi_layer_get_buffer_ptr(&pCacheLayerPtr);
    gdi_layer_pop_and_restore_active();

       gdi_layer_push_and_set_active(g_imgadv_cntx.thumbnail_layer_handle);
    gdi_layer_get_buffer_ptr(&pThumbLayerPtr);
    gdi_layer_pop_and_restore_active();

    memset(temp_row_buffer2,0,sizeof(temp_row_buffer2));
    memset(temp_col_buffer2,0,sizeof(temp_col_buffer2));
    if (offset>0)
    {
        if(g_imgadv_cntx.imgview_rotate==0 || g_imgadv_cntx.imgview_rotate==2)
        {/*OK*/
            for (row=0;row<LCD_HEIGHT;row++)
            {
                pCachePos = pCacheLayerPtr+row*LCD_WIDTH*2;
                pBasePos   =   pBaseLayerPtr+row*LCD_WIDTH*2;
                pThumbPos = pThumbLayerPtr+row*LCD_WIDTH*2;
                pTempPtr = temp_row_buffer2;
                memcpy(pTempPtr,pCachePos,LCD_WIDTH*2);
                pTempPtr+=LCD_WIDTH*2;
                memcpy(pTempPtr,pThumbPos,LCD_WIDTH*2);

                memcpy(pBasePos,(temp_row_buffer2+(LCD_WIDTH-offset)*2),LCD_WIDTH*2);
            }
        }
        else
        {
            if(g_imgadv_cntx.imgview_rotate ==1)  ///90 degree
            {/* r2l*/
            Trace_out("img 90 degree lllllll 2 rrrrrr\n");
                for (row=0;row<LCD_WIDTH;row++)
                {
                    pCachePos = pCacheLayerPtr+row*LCD_HEIGHT*2;
                    pBasePos   =   pBaseLayerPtr+row*LCD_HEIGHT*2;
                    pThumbPos = pThumbLayerPtr+row*LCD_HEIGHT*2;
                    pTempPtr = temp_col_buffer2;
                    memcpy(pTempPtr,pCachePos,LCD_HEIGHT*2);
                    pTempPtr+=LCD_HEIGHT*2;
                    memcpy(pTempPtr,pThumbPos,LCD_HEIGHT*2);

                    memcpy(pBasePos,(temp_col_buffer2+(LCD_HEIGHT-offset)*2),LCD_HEIGHT*2);
                }
            }
            else   ///270 degree
            {
                for (row=0;row<LCD_WIDTH;row++)
                {
                    pCachePos = pCacheLayerPtr+row*LCD_HEIGHT*2;
                    pBasePos   =   pBaseLayerPtr+row*LCD_HEIGHT*2;
                    pThumbPos = pThumbLayerPtr+row*LCD_HEIGHT*2;
                    pTempPtr = temp_col_buffer2;
                    memcpy(pTempPtr,pCachePos,LCD_HEIGHT*2);
                    pTempPtr+=LCD_HEIGHT*2;
                    memcpy(pTempPtr,pThumbPos,LCD_HEIGHT*2);

                    memcpy(pBasePos,(temp_col_buffer2+(LCD_HEIGHT-offset)*2),LCD_HEIGHT*2);
                }
            }

        }

    }
}