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/*
* Copyright (C) 2007-2008 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
/**
*
* File Name: omxVCM4P2_TransRecBlockCoef_inter.c
* OpenMAX DL: v1.0.2
* Revision: 9641
* Date: Thursday, February 7, 2008
*
*
*
*
* Description:
* Contains modules DCT->quant and reconstructing the inter texture data
*
*/
#include "omxtypes.h"
#include "armOMX.h"
#include "omxVC.h"
#include "armCOMM.h"
/**
* Function: omxVCM4P2_TransRecBlockCoef_inter (6.2.4.4.5)
*
* Description:
* Implements DCT, and quantizes the DCT coefficients of the inter block
* while reconstructing the texture residual. There is no boundary check for
* the bit stream buffer.
*
* Input Arguments:
*
* pSrc -pointer to the residuals to be encoded; must be aligned on an
* 16-byte boundary.
* QP - quantization parameter.
* shortVideoHeader - binary flag indicating presence of short_video_header;
* shortVideoHeader==1 selects linear intra DC mode, and
* shortVideoHeader==0 selects non linear intra DC mode.
*
* Output Arguments:
*
* pDst - pointer to the quantized DCT coefficients buffer; must be aligned
* on a 16-byte boundary.
* pRec - pointer to the reconstructed texture residuals; must be aligned
* on a 16-byte boundary.
*
* Return Value:
*
* OMX_Sts_NoErr - no error
* OMX_Sts_BadArgErr - bad arguments:
* - At least one of the following pointers is either NULL or
* not 16-byte aligned:
* - pSrc
* - pDst
* - pRec
* - QP <= 0 or QP >= 32.
*
*/
OMXResult omxVCM4P2_TransRecBlockCoef_inter(
const OMX_S16 *pSrc,
OMX_S16 * pDst,
OMX_S16 * pRec,
OMX_U8 QP,
OMX_INT shortVideoHeader
)
{
/* 64 elements are needed but to align it to 16 bytes need
8 more elements of padding */
OMX_S16 tempBuffer[72];
OMX_S16 *pTempBuffer;
OMX_INT i;
/* Aligning the local buffers */
pTempBuffer = armAlignTo16Bytes(tempBuffer);
/* Argument error checks */
armRetArgErrIf(pSrc == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(pRec == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(pDst == NULL, OMX_Sts_BadArgErr);
armRetArgErrIf(!armIs16ByteAligned(pSrc), OMX_Sts_BadArgErr);
armRetArgErrIf(!armIs16ByteAligned(pRec), OMX_Sts_BadArgErr);
armRetArgErrIf(!armIs16ByteAligned(pDst), OMX_Sts_BadArgErr);
armRetArgErrIf(((QP <= 0) || (QP >= 32)), OMX_Sts_BadArgErr);
omxVCM4P2_DCT8x8blk (pSrc, pDst);
omxVCM4P2_QuantInter_I(
pDst,
QP,
shortVideoHeader);
for (i = 0; i < 64; i++)
{
pTempBuffer[i] = pDst[i];
}
omxVCM4P2_QuantInvInter_I(
pTempBuffer,
QP);
omxVCM4P2_IDCT8x8blk (pTempBuffer, pRec);
return OMX_Sts_NoErr;
}
/* End of file */
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