ref: f74e0229d5575af20498a9dbf48f1d305dfc8719
dir: libvpx/vp8/decoder/ec_types.h
/*
* Copyright (c) 2011 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef VPX_VP8_DECODER_EC_TYPES_H_
#define VPX_VP8_DECODER_EC_TYPES_H_
#ifdef __cplusplus
extern "C" {
#endif
#define MAX_OVERLAPS 16
/* The area (pixel area in Q6) the block pointed to by bmi overlaps
* another block with.
*/
typedef struct {
int overlap;
union b_mode_info *bmi;
} OVERLAP_NODE;
/* Structure to keep track of overlapping blocks on a block level. */
typedef struct {
/* TODO(holmer): This array should be exchanged for a linked list */
OVERLAP_NODE overlaps[MAX_OVERLAPS];
} B_OVERLAP;
/* Structure used to hold all the overlaps of a macroblock. The overlaps of a
* macroblock is further divided into block overlaps.
*/
typedef struct {
B_OVERLAP overlaps[16];
} MB_OVERLAP;
/* Structure for keeping track of motion vectors and which reference frame they
* refer to. Used for motion vector interpolation.
*/
typedef struct {
MV mv;
MV_REFERENCE_FRAME ref_frame;
} EC_BLOCK;
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VPX_VP8_DECODER_EC_TYPES_H_