1 //<MStar Software>
2 //******************************************************************************
3 // MStar Software
4 // Copyright (c) 2010 - 2012 MStar Semiconductor, Inc. All rights reserved.
5 // All software, firmware and related documentation herein ("MStar Software") are
6 // intellectual property of MStar Semiconductor, Inc. ("MStar") and protected by
7 // law, including, but not limited to, copyright law and international treaties.
8 // Any use, modification, reproduction, retransmission, or republication of all
9 // or part of MStar Software is expressly prohibited, unless prior written
10 // permission has been granted by MStar.
11 //
12 // By accessing, browsing and/or using MStar Software, you acknowledge that you
13 // have read, understood, and agree, to be bound by below terms ("Terms") and to
14 // comply with all applicable laws and regulations:
15 //
16 // 1. MStar shall retain any and all right, ownership and interest to MStar
17 // Software and any modification/derivatives thereof.
18 // No right, ownership, or interest to MStar Software and any
19 // modification/derivatives thereof is transferred to you under Terms.
20 //
21 // 2. You understand that MStar Software might include, incorporate or be
22 // supplied together with third party`s software and the use of MStar
23 // Software may require additional licenses from third parties.
24 // Therefore, you hereby agree it is your sole responsibility to separately
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26 // such third party`s software.
27 //
28 // 3. MStar Software and any modification/derivatives thereof shall be deemed as
29 // MStar`s confidential information and you agree to keep MStar`s
30 // confidential information in strictest confidence and not disclose to any
31 // third party.
32 //
33 // 4. MStar Software is provided on an "AS IS" basis without warranties of any
34 // kind. Any warranties are hereby expressly disclaimed by MStar, including
35 // without limitation, any warranties of merchantability, non-infringement of
36 // intellectual property rights, fitness for a particular purpose, error free
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38 // claim against MStar for any loss, damage, cost or expense that you may
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40 // In no event shall MStar be liable for any direct, indirect, incidental or
41 // consequential damages, including without limitation, lost of profit or
42 // revenues, lost or damage of data, and unauthorized system use.
43 // You agree that this Section 4 shall still apply without being affected
44 // even if MStar Software has been modified by MStar in accordance with your
45 // request or instruction for your use, except otherwise agreed by both
46 // parties in writing.
47 //
48 // 5. If requested, MStar may from time to time provide technical supports or
49 // services in relation with MStar Software to you for your use of
50 // MStar Software in conjunction with your or your customer`s product
51 // ("Services").
52 // You understand and agree that, except otherwise agreed by both parties in
53 // writing, Services are provided on an "AS IS" basis and the warranty
54 // disclaimer set forth in Section 4 above shall apply.
55 //
56 // 6. Nothing contained herein shall be construed as by implication, estoppels
57 // or otherwise:
58 // (a) conferring any license or right to use MStar name, trademark, service
59 // mark, symbol or any other identification;
60 // (b) obligating MStar or any of its affiliates to furnish any person,
61 // including without limitation, you and your customers, any assistance
62 // of any kind whatsoever, or any information; or
63 // (c) conferring any license or right under any intellectual property right.
64 //
65 // 7. These terms shall be governed by and construed in accordance with the laws
66 // of Taiwan, R.O.C., excluding its conflict of law rules.
67 // Any and all dispute arising out hereof or related hereto shall be finally
68 // settled by arbitration referred to the Chinese Arbitration Association,
69 // Taipei in accordance with the ROC Arbitration Law and the Arbitration
70 // Rules of the Association by three (3) arbitrators appointed in accordance
71 // with the said Rules.
72 // The place of arbitration shall be in Taipei, Taiwan and the language shall
73 // be English.
74 // The arbitration award shall be final and binding to both parties.
75 //
76 //******************************************************************************
77 //<MStar Software>
78
79 #include "IntraUpdate.h"
80
81
82 /////////////////////////////////////////////////////
83 // IntraUpdate implementation
84 /////////////////////////////////////////////////////
85
IntraUpdate_Init(IntraUpdateContext * ctx)86 void IntraUpdate_Init(IntraUpdateContext* ctx)
87 {
88 MS_S32 i;
89
90 ctx->nIndexCIR = 0;
91 ctx->nIndexAIR = 0;
92 for (i=0; i<ctx->nTotalMb; i++) {
93 ctx->pHwMbMap[i].intra = 0;
94 ctx->pSwMbMap[i].inter_count = 0;
95 ctx->pSwMbMap[i].intra_count = 0;
96 }
97 }
98
IntraUpdate_Frame(IntraUpdateContext * ctx)99 void IntraUpdate_Frame(IntraUpdateContext* ctx)
100 {
101 MS_S32 i, intra_count, check_count;
102
103 if (!(ctx->bFIR || ctx->bCIR || ctx->bAIR))
104 return;
105
106 for (i=0; i<ctx->nTotalMb; i++)
107 {
108 if (ctx->bAIR) {
109 if (ctx->pHwMbMap[i].motion) // 1bit
110 ctx->pSwMbMap[i].intra_count = ctx->AIR_ROUND;
111 }
112 if (ctx->bFIR) {
113 if (ctx->pHwMbMap[i].intra)
114 ctx->pSwMbMap[i].inter_count = 0;
115 else {
116 if (ctx->pSwMbMap[i].inter_count<ctx->FIR_THR)
117 ctx->pSwMbMap[i].inter_count++;
118 }
119 }
120 // Reset
121 ctx->pHwMbMap[i].intra = 0;
122 }
123
124 if (ctx->bCIR)
125 {
126 intra_count = 0;
127 i = ctx->nIndexCIR;
128 while (intra_count<ctx->CIR_COUNT) {
129 if (i==ctx->nTotalMb)
130 i=0;
131 ctx->pHwMbMap[i].intra = 1;
132 intra_count++;
133 i++;
134 }
135 ctx->nIndexCIR = i;
136 }
137
138 if (ctx->bFIR || ctx->bAIR)
139 {
140 // AIR and FIR share the same maximal intra count
141 i = ctx->nIndexAIR;
142 check_count = 0, intra_count = 0;
143 while (check_count<ctx->nTotalMb) {
144 if (i>=ctx->nTotalMb)
145 i = 0;
146 if (ctx->pSwMbMap[i].inter_count>=ctx->FIR_THR) {
147 ctx->pHwMbMap[i].intra = 1;
148 intra_count++;
149 if (ctx->pSwMbMap[i].intra_count>0)
150 ctx->pSwMbMap[i].intra_count--;
151 }
152 else if (ctx->pSwMbMap[i].intra_count>0 && intra_count<ctx->AIR_COUNT) {
153 ctx->pHwMbMap[i].intra = 1;
154 intra_count++;
155 ctx->pSwMbMap[i].intra_count--;
156 }
157 i++;
158 check_count++;
159 if (intra_count==ctx->AIR_COUNT) {
160 if (ctx->bFIR)
161 ctx->nIndexAIR = i; // The AIR starting pos for next frame
162 if (!ctx->bFIR)
163 break; // Short-cut when AIR only
164 }
165 }
166 }
167 }
168