1 /* 2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include "segmentation.h" 12 #include "vpx_mem/vpx_mem.h" 13 vp8_update_gf_useage_maps(VP8_COMP * cpi,VP8_COMMON * cm,MACROBLOCK * x)14void vp8_update_gf_useage_maps(VP8_COMP *cpi, VP8_COMMON *cm, MACROBLOCK *x) { 15 int mb_row, mb_col; 16 17 MODE_INFO *this_mb_mode_info = cm->mi; 18 19 x->gf_active_ptr = (signed char *)cpi->gf_active_flags; 20 21 if ((cm->frame_type == KEY_FRAME) || (cm->refresh_golden_frame)) { 22 /* Reset Gf useage monitors */ 23 memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols)); 24 cpi->gf_active_count = cm->mb_rows * cm->mb_cols; 25 } else { 26 /* for each macroblock row in image */ 27 for (mb_row = 0; mb_row < cm->mb_rows; ++mb_row) { 28 /* for each macroblock col in image */ 29 for (mb_col = 0; mb_col < cm->mb_cols; ++mb_col) { 30 /* If using golden then set GF active flag if not already set. 31 * If using last frame 0,0 mode then leave flag as it is 32 * else if using non 0,0 motion or intra modes then clear 33 * flag if it is currently set 34 */ 35 if ((this_mb_mode_info->mbmi.ref_frame == GOLDEN_FRAME) || 36 (this_mb_mode_info->mbmi.ref_frame == ALTREF_FRAME)) { 37 if (*(x->gf_active_ptr) == 0) { 38 *(x->gf_active_ptr) = 1; 39 cpi->gf_active_count++; 40 } 41 } else if ((this_mb_mode_info->mbmi.mode != ZEROMV) && 42 *(x->gf_active_ptr)) { 43 *(x->gf_active_ptr) = 0; 44 cpi->gf_active_count--; 45 } 46 47 x->gf_active_ptr++; /* Step onto next entry */ 48 this_mb_mode_info++; /* skip to next mb */ 49 } 50 51 /* this is to account for the border */ 52 this_mb_mode_info++; 53 } 54 } 55 } 56