113 lines
4.6 KiB
C
113 lines
4.6 KiB
C
/*
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* Copyright (c) 2011 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef ERROR_CONCEALMENT_H
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#define ERROR_CONCEALMENT_H
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#include "onyxd_int.h"
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#include "ec_types.h"
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/* Allocate memory for the overlap lists */
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int vp8_alloc_overlap_lists(VP8D_COMP *pbi);
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/* Deallocate the overlap lists */
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void vp8_de_alloc_overlap_lists(VP8D_COMP *pbi);
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/* Inserts a new overlap area value to the list of overlaps of a block */
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void vp8_assign_overlap(OVERLAP_NODE* overlaps,
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B_MODE_INFO *bmi,
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MV_REFERENCE_FRAME ref_frame,
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int overlap);
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/* Calculates the overlap area between two 4x4 squares, where the first
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* square has its upper-left corner at (b1_row, b1_col) and the second
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* square has its upper-left corner at (b2_row, b2_col). Doesn't
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* properly handle squares which doesn't overlap.
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*/
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int vp8_block_overlap(int b1_row, int b1_col, int b2_row, int b2_col);
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/* Finds the reference frame type which has the largest overlapping area. */
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MV_REFERENCE_FRAME vp8_largest_overlap_type(const B_OVERLAP *block_overlaps);
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/* Calculates the overlap area for all blocks in a macroblock at position
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* (mb_row, mb_col) in macroblocks, which are being overlapped by a given
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* overlapping block at position (new_row, new_col) (in pixels, Q3). The
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* first block being overlapped in the macroblock has position (first_blk_row,
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* first_blk_col) in blocks relative the upper-left corner of the image.
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*/
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void vp8_calculate_overlaps_mb(B_OVERLAP *b_overlaps, B_MODE_INFO *bmi,
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MV_REFERENCE_FRAME ref_frame,
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int new_row, int new_col,
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int mb_row, int mb_col,
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int first_blk_row, int first_blk_col);
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/* Estimates a motion vector given the overlapping blocks' motion vectors.
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* Filters out all overlapping blocks which doesn't refer to the correct
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* reference frame type.
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*/
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void vp8_estimate_mv(const OVERLAP_NODE *overlaps, B_MODE_INFO *bmi,
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MV_REFERENCE_FRAME type);
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/* Estimates all motion vectors for a macroblock given the lists of
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* overlaps for each block. Decides whether or not the MVs must be clamped.
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*/
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void vp8_estimate_mb_mvs(const B_OVERLAP *block_overlaps,
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MODE_INFO *mi,
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int mb_to_left_edge,
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int mb_to_right_edge,
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int mb_to_top_edge,
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int mb_to_bottom_edge);
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/* Estimate all missing motion vectors.
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*/
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void vp8_estimate_missing_mvs(VP8D_COMP *pbi);
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/* Estimate all missing motion vectors */
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void vp8_estimate_missing_mvs_ex(MB_OVERLAP *overlaps,
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MODE_INFO *mi, MODE_INFO *prev_mi,
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int mb_rows, int mb_cols,
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unsigned int first_corrupt);
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/* Functions for spatial MV interpolation */
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/* Finds the neighboring blocks of a macroblocks. In the general case
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* 20 blocks are found. If a fewer number of blocks are found due to
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* image boundaries, those positions in the EC_BLOCK array are left "empty".
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* The neighbors are enumerated with the upper-left neighbor as the first
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* element, the second element refers to the neighbor to right of the previous
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* neighbor, and so on. The last element refers to the neighbor below the first
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* neighbor.
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*/
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void vp8_find_neighboring_blocks(MODE_INFO *mi,
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EC_BLOCK *neighbors,
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int mb_row, int mb_col,
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int mb_rows, int mb_cols,
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int mi_stride);
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/* Calculates which reference frame type is dominating among the neighbors */
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MV_REFERENCE_FRAME vp8_dominant_ref_frame(EC_BLOCK *neighbors);
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/* Interpolates all motion vectors for a macroblock from the neighboring blocks'
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* motion vectors.
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*/
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void vp8_interpolate_mvs(MACROBLOCKD *mb,
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EC_BLOCK *neighbors,
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MV_REFERENCE_FRAME dom_ref_frame);
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/* Interpolates all motion vectors for a macroblock mb at position
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* (mb_row, mb_col). */
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void vp8_interpolate_motion(MACROBLOCKD *mb,
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int mb_row, int mb_col,
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int mb_rows, int mb_cols,
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int mi_stride);
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#endif
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