xref: /utopia/UTPA2-700.0.x/modules/mfe/drv/mfe_ex/cModel/IntraUpdate.c (revision 53ee8cc121a030b8d368113ac3e966b4705770ef)

//<MStar Software>
//******************************************************************************
// MStar Software
// Copyright (c) 2010 - 2012 MStar Semiconductor, Inc. All rights reserved.
// All software, firmware and related documentation herein ("MStar Software") are
// intellectual property of MStar Semiconductor, Inc. ("MStar") and protected by
// law, including, but not limited to, copyright law and international treaties.
// Any use, modification, reproduction, retransmission, or republication of all
// or part of MStar Software is expressly prohibited, unless prior written
// permission has been granted by MStar.
//
// By accessing, browsing and/or using MStar Software, you acknowledge that you
// have read, understood, and agree, to be bound by below terms ("Terms") and to
// comply with all applicable laws and regulations:
//
// 1. MStar shall retain any and all right, ownership and interest to MStar
//    Software and any modification/derivatives thereof.
//    No right, ownership, or interest to MStar Software and any
//    modification/derivatives thereof is transferred to you under Terms.
//
// 2. You understand that MStar Software might include, incorporate or be
//    supplied together with third party`s software and the use of MStar
//    Software may require additional licenses from third parties.
//    Therefore, you hereby agree it is your sole responsibility to separately
//    obtain any and all third party right and license necessary for your use of
//    such third party`s software.
//
// 3. MStar Software and any modification/derivatives thereof shall be deemed as
//    MStar`s confidential information and you agree to keep MStar`s
//    confidential information in strictest confidence and not disclose to any
//    third party.
//
// 4. MStar Software is provided on an "AS IS" basis without warranties of any
//    kind. Any warranties are hereby expressly disclaimed by MStar, including
//    without limitation, any warranties of merchantability, non-infringement of
//    intellectual property rights, fitness for a particular purpose, error free
//    and in conformity with any international standard.  You agree to waive any
//    claim against MStar for any loss, damage, cost or expense that you may
//    incur related to your use of MStar Software.
//    In no event shall MStar be liable for any direct, indirect, incidental or
//    consequential damages, including without limitation, lost of profit or
//    revenues, lost or damage of data, and unauthorized system use.
//    You agree that this Section 4 shall still apply without being affected
//    even if MStar Software has been modified by MStar in accordance with your
//    request or instruction for your use, except otherwise agreed by both
//    parties in writing.
//
// 5. If requested, MStar may from time to time provide technical supports or
//    services in relation with MStar Software to you for your use of
//    MStar Software in conjunction with your or your customer`s product
//    ("Services").
//    You understand and agree that, except otherwise agreed by both parties in
//    writing, Services are provided on an "AS IS" basis and the warranty
//    disclaimer set forth in Section 4 above shall apply.
//
// 6. Nothing contained herein shall be construed as by implication, estoppels
//    or otherwise:
//    (a) conferring any license or right to use MStar name, trademark, service
//        mark, symbol or any other identification;
//    (b) obligating MStar or any of its affiliates to furnish any person,
//        including without limitation, you and your customers, any assistance
//        of any kind whatsoever, or any information; or
//    (c) conferring any license or right under any intellectual property right.
//
// 7. These terms shall be governed by and construed in accordance with the laws
//    of Taiwan, R.O.C., excluding its conflict of law rules.
//    Any and all dispute arising out hereof or related hereto shall be finally
//    settled by arbitration referred to the Chinese Arbitration Association,
//    Taipei in accordance with the ROC Arbitration Law and the Arbitration
//    Rules of the Association by three (3) arbitrators appointed in accordance
//    with the said Rules.
//    The place of arbitration shall be in Taipei, Taiwan and the language shall
//    be English.
//    The arbitration award shall be final and binding to both parties.
//
//******************************************************************************
//<MStar Software>

#include "IntraUpdate.h"


/////////////////////////////////////////////////////
// IntraUpdate implementation
/////////////////////////////////////////////////////

void IntraUpdate_Init(IntraUpdateContext* ctx)
{
	MS_S32 i;

	ctx->nIndexCIR = 0;
	ctx->nIndexAIR = 0;
	for (i=0; i<ctx->nTotalMb; i++) {
		ctx->pHwMbMap[i].intra = 0;
		ctx->pSwMbMap[i].inter_count = 0;
		ctx->pSwMbMap[i].intra_count = 0;
	}
}

void IntraUpdate_Frame(IntraUpdateContext* ctx)
{
	MS_S32 i, intra_count, check_count;

	if (!(ctx->bFIR || ctx->bCIR || ctx->bAIR))
		return;

	for (i=0; i<ctx->nTotalMb; i++)
	{
		if (ctx->bAIR) {
			if (ctx->pHwMbMap[i].motion) // 1bit
				ctx->pSwMbMap[i].intra_count = ctx->AIR_ROUND;
		}
		if (ctx->bFIR) {
			if (ctx->pHwMbMap[i].intra)
				ctx->pSwMbMap[i].inter_count = 0;
			else {
				if (ctx->pSwMbMap[i].inter_count<ctx->FIR_THR)
					ctx->pSwMbMap[i].inter_count++;
			}
		}
		// Reset
		ctx->pHwMbMap[i].intra = 0;
	}

	if (ctx->bCIR)
	{
		intra_count = 0;
		i = ctx->nIndexCIR;
		while (intra_count<ctx->CIR_COUNT) {
			if (i==ctx->nTotalMb)
				i=0;
			ctx->pHwMbMap[i].intra = 1;
			intra_count++;
			i++;
		}
		ctx->nIndexCIR = i;
	}

	if (ctx->bFIR || ctx->bAIR)
	{
		// AIR and FIR share the same maximal intra count
		i = ctx->nIndexAIR;
		check_count = 0, intra_count = 0;
		while (check_count<ctx->nTotalMb) {
			if (i>=ctx->nTotalMb)
				i = 0;
			if (ctx->pSwMbMap[i].inter_count>=ctx->FIR_THR) {
				ctx->pHwMbMap[i].intra = 1;
				intra_count++;
				if (ctx->pSwMbMap[i].intra_count>0)
					ctx->pSwMbMap[i].intra_count--;
			}
			else if (ctx->pSwMbMap[i].intra_count>0 && intra_count<ctx->AIR_COUNT) {
				ctx->pHwMbMap[i].intra = 1;
				intra_count++;
				ctx->pSwMbMap[i].intra_count--;
			}
			i++;
			check_count++;
			if (intra_count==ctx->AIR_COUNT) {
				if (ctx->bFIR)
					ctx->nIndexAIR = i;	// The AIR starting pos for next frame
				if (!ctx->bFIR)
					break;	// Short-cut when AIR only
			}
		}
	}
}