vpx/vp10/encoder/mbgraph.h
Zoe Liu 1af28f0230 Code refactoring on Macros related to ref frame numbers
We have renamed following Macros to avoid name confusion:

REFS_PER_FRAME --> INTER_REFS_PER_FRAME
(= ALTREF_FRAME - LAST_FRAME + 1)
MAX_REF_FRAMES --> TOTAL_REFS_PER_FRAME
(= ALTREF_FRAME - INTRA_FRAME + 1)

INTER_REFS_PER_FRAME specifies the maximum number of reference frames
that each Inter frame may use.
TOTAL_REFS_PER_FRAME is equal to INTER_REFS_PER_FRAME + 1, which
counts the INTRA_FRAME.

Further, at the encoder side, since REF_FRAMES specifies the maximum
number of the reference frames that the encoder may store, REF_FRAMES
is usually larger than INTER_REFS_PER_FRAME. For example, in the
ext-refs experiment, REF_FRAMES == 8, which allows the encoder to
store maximum 8 reference frames in the buffer, but
INTER_REFS_PER_FRAME equals to 6, which allows each Inter frame may
use up to 6 frames out of the 8 buffered frames as its references.
Hence, in order to explore the possibility to store more reference
frames in future patches, we modified a couple of array sizes to
accomodate the case that the number of buffered reference frames is
not always equal to the number of the references that are being used
by each Inter frame.

Change-Id: I19e42ef608946cc76ebfd3e965a05f4b9b93a0b3
2016-08-04 11:21:28 -07:00

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C

/*
* Copyright (c) 2010 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 VP10_ENCODER_MBGRAPH_H_
#define VP10_ENCODER_MBGRAPH_H_
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
struct {
int err;
union {
int_mv mv;
PREDICTION_MODE mode;
} m;
} ref[TOTAL_REFS_PER_FRAME];
} MBGRAPH_MB_STATS;
typedef struct {
MBGRAPH_MB_STATS *mb_stats;
} MBGRAPH_FRAME_STATS;
struct VP10_COMP;
void vp10_update_mbgraph_stats(struct VP10_COMP *cpi);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // VP10_ENCODER_MBGRAPH_H_