ih264e_mc.h revision a2b49e5f0574dee76f81507f288143d83a4b7c1a 
1/******************************************************************************
2 *
3 * Copyright (C) 2015 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 *****************************************************************************
18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19*/
20
21/**
22*******************************************************************************
23* @file
24*  ih264e_mc.h
25*
26* @brief
27*  This file contains declarations of routines that perform motion compensation
28*  of luma and chroma macroblocks.
29*
30* @author
31*  ittiam
32*
33* @remarks
34*  none
35*
36*******************************************************************************
37*/
38
39#ifndef IH264E_MC_H_
40#define IH264E_MC_H_
41
42/*****************************************************************************/
43/* Extern Function Declarations                                              */
44/*****************************************************************************/
45
46/**
47******************************************************************************
48*
49* @brief
50*  performs motion compensation for a luma mb for the given mv.
51*
52* @par Description
53*  This routine performs motion compensation of an inter mb. When the inter
54*  mb mode is P16x16, there is no need to copy 16x16 unit from reference buffer
55*  to pred buffer. In this case the function returns pointer and stride of the
56*  ref. buffer and this info is used in place of pred buffer else where.
57*  In other cases, the pred buffer is populated via copy / filtering + copy
58*  (q pel cases) and returned.
59*
60* @param[in] ps_proc
61*  pointer to current proc ctxt
62*
63* @param[out] pu1_pseudo_pred
64*  pseudo prediction buffer
65*
66* @param[out] u4_pseudo_pred_strd
67*  pseudo pred buffer stride
68*
69* @return  none
70*
71* @remarks Assumes half pel buffers for the entire frame are populated.
72*
73******************************************************************************
74*/
75void ih264e_motion_comp_luma(process_ctxt_t *ps_proc,
76                             UWORD8 **pu1_pseudo_pred,
77                             WORD32 *pi4_pseudo_pred_strd);
78
79/**
80******************************************************************************
81*
82* @brief
83*  performs motion compensation for chroma mb
84*
85* @par   Description
86*  Copies a MB of data from the reference buffer (Full pel, half pel or q pel)
87*  according to the motion vectors given
88*
89* @param[in] ps_proc
90*  pointer to current proc ctxt
91*
92* @return  none
93*
94* @remarks Assumes half pel and quarter pel buffers for the entire frame are
95*  populated.
96******************************************************************************
97*/
98void ih264e_motion_comp_chroma
99        (
100            process_ctxt_t *ps_proc
101        );
102
103
104#endif // IH264E_MC_H_
105