michael@0: /*
michael@0:  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
michael@0:  *
michael@0:  *  Use of this source code is governed by a BSD-style license
michael@0:  *  that can be found in the LICENSE file in the root of the source
michael@0:  *  tree. An additional intellectual property rights grant can be found
michael@0:  *  in the file PATENTS.  All contributing project authors may
michael@0:  *  be found in the AUTHORS file in the root of the source tree.
michael@0:  */
michael@0: 
michael@0: 
michael@0: #include "segmentation.h"
michael@0: #include "vpx_mem/vpx_mem.h"
michael@0: 
michael@0: void vp8_update_gf_useage_maps(VP8_COMP *cpi, VP8_COMMON *cm, MACROBLOCK *x)
michael@0: {
michael@0:     int mb_row, mb_col;
michael@0: 
michael@0:     MODE_INFO *this_mb_mode_info = cm->mi;
michael@0: 
michael@0:     x->gf_active_ptr = (signed char *)cpi->gf_active_flags;
michael@0: 
michael@0:     if ((cm->frame_type == KEY_FRAME) || (cm->refresh_golden_frame))
michael@0:     {
michael@0:         /* Reset Gf useage monitors */
michael@0:         vpx_memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols));
michael@0:         cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         /* for each macroblock row in image */
michael@0:         for (mb_row = 0; mb_row < cm->mb_rows; mb_row++)
michael@0:         {
michael@0:             /* for each macroblock col in image */
michael@0:             for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
michael@0:             {
michael@0: 
michael@0:                 /* If using golden then set GF active flag if not already set.
michael@0:                  * If using last frame 0,0 mode then leave flag as it is
michael@0:                  * else if using non 0,0 motion or intra modes then clear
michael@0:                  * flag if it is currently set
michael@0:                  */
michael@0:                 if ((this_mb_mode_info->mbmi.ref_frame == GOLDEN_FRAME) || (this_mb_mode_info->mbmi.ref_frame == ALTREF_FRAME))
michael@0:                 {
michael@0:                     if (*(x->gf_active_ptr) == 0)
michael@0:                     {
michael@0:                         *(x->gf_active_ptr) = 1;
michael@0:                         cpi->gf_active_count ++;
michael@0:                     }
michael@0:                 }
michael@0:                 else if ((this_mb_mode_info->mbmi.mode != ZEROMV) && *(x->gf_active_ptr))
michael@0:                 {
michael@0:                     *(x->gf_active_ptr) = 0;
michael@0:                     cpi->gf_active_count--;
michael@0:                 }
michael@0: 
michael@0:                 x->gf_active_ptr++;          /* Step onto next entry */
michael@0:                 this_mb_mode_info++;         /* skip to next mb */
michael@0: 
michael@0:             }
michael@0: 
michael@0:             /* this is to account for the border */
michael@0:             this_mb_mode_info++;
michael@0:         }
michael@0:     }
michael@0: }