178e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar/* 278e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * Copyright (C) 2007-2008 ARM Limited 378e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 478e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * Licensed under the Apache License, Version 2.0 (the "License"); 578e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * you may not use this file except in compliance with the License. 678e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * You may obtain a copy of the License at 778e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 878e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * http://www.apache.org/licenses/LICENSE-2.0 978e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 1078e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * Unless required by applicable law or agreed to in writing, software 1178e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * distributed under the License is distributed on an "AS IS" BASIS, 1278e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1378e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * See the License for the specific language governing permissions and 1478e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * limitations under the License. 1578e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar * 1678e52bfac041d71ce53b5b13c2abf78af742b09dLajos Molnar */ 170c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 180c1bc742181ded4930842b46e9507372f0b1b963James Dong * 190c1bc742181ded4930842b46e9507372f0b1b963James Dong * File Name: omxVCM4P2_DecodeBlockCoef_Inter.c 200c1bc742181ded4930842b46e9507372f0b1b963James Dong * OpenMAX DL: v1.0.2 210c1bc742181ded4930842b46e9507372f0b1b963James Dong * Revision: 9641 220c1bc742181ded4930842b46e9507372f0b1b963James Dong * Date: Thursday, February 7, 2008 230c1bc742181ded4930842b46e9507372f0b1b963James Dong * 240c1bc742181ded4930842b46e9507372f0b1b963James Dong * 250c1bc742181ded4930842b46e9507372f0b1b963James Dong * 260c1bc742181ded4930842b46e9507372f0b1b963James Dong * 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * Contains modules for inter reconstruction 290c1bc742181ded4930842b46e9507372f0b1b963James Dong * 300c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 310c1bc742181ded4930842b46e9507372f0b1b963James Dong 320c1bc742181ded4930842b46e9507372f0b1b963James Dong 330c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxtypes.h" 340c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armOMX.h" 350c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxVC.h" 360c1bc742181ded4930842b46e9507372f0b1b963James Dong 370c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armCOMM.h" 380c1bc742181ded4930842b46e9507372f0b1b963James Dong 390c1bc742181ded4930842b46e9507372f0b1b963James Dong 400c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCM4P2_DecodeBlockCoef_Inter 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * Decodes the INTER block coefficients. Inverse quantization, inversely zigzag 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * positioning and IDCT, with appropriate clipping on each step, are performed 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * on the coefficients. The results (residuals) are placed in a contiguous array 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * of 64 elements. For INTER block, the output buffer holds the residuals for 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * further reconstruction. 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * Remarks: 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * 520c1bc742181ded4930842b46e9507372f0b1b963James Dong * Parameters: 530c1bc742181ded4930842b46e9507372f0b1b963James Dong * [in] ppBitStream pointer to the pointer to the current byte in 540c1bc742181ded4930842b46e9507372f0b1b963James Dong * the bit stream buffer. There is no boundary 550c1bc742181ded4930842b46e9507372f0b1b963James Dong * check for the bit stream buffer. 560c1bc742181ded4930842b46e9507372f0b1b963James Dong * [in] pBitOffset pointer to the bit position in the byte pointed 570c1bc742181ded4930842b46e9507372f0b1b963James Dong * to by *ppBitStream. *pBitOffset is valid within 580c1bc742181ded4930842b46e9507372f0b1b963James Dong * [0-7] 590c1bc742181ded4930842b46e9507372f0b1b963James Dong * [in] QP quantization parameter 600c1bc742181ded4930842b46e9507372f0b1b963James Dong * [in] shortVideoHeader a flag indicating presence of short_video_header; 610c1bc742181ded4930842b46e9507372f0b1b963James Dong * shortVideoHeader==1 indicates using quantization method defined in short 620c1bc742181ded4930842b46e9507372f0b1b963James Dong * video header mode, and shortVideoHeader==0 indicates normail quantization method. 630c1bc742181ded4930842b46e9507372f0b1b963James Dong * [out] ppBitStream *ppBitStream is updated after the block is decoded, so that it points to the 640c1bc742181ded4930842b46e9507372f0b1b963James Dong * current byte in the bit stream buffer. 650c1bc742181ded4930842b46e9507372f0b1b963James Dong * [out] pBitOffset *pBitOffset is updated so that it points to the current bit position in the 660c1bc742181ded4930842b46e9507372f0b1b963James Dong * byte pointed by *ppBitStream 670c1bc742181ded4930842b46e9507372f0b1b963James Dong * [out] pDst pointer to the decoded residual buffer (a contiguous array of 64 elements of 680c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_S16 data type). Must be 16-byte aligned. 690c1bc742181ded4930842b46e9507372f0b1b963James Dong * 700c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 710c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 720c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments 730c1bc742181ded4930842b46e9507372f0b1b963James Dong * - At least one of the following pointers is Null: ppBitStream, *ppBitStream, pBitOffset , pDst 740c1bc742181ded4930842b46e9507372f0b1b963James Dong * - At least one of the below case: 750c1bc742181ded4930842b46e9507372f0b1b963James Dong * - *pBitOffset exceeds [0,7], QP <= 0; 760c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pDst not 16-byte aligned 770c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_Err - status error 780c1bc742181ded4930842b46e9507372f0b1b963James Dong * 790c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 800c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCM4P2_DecodeBlockCoef_Inter( 810c1bc742181ded4930842b46e9507372f0b1b963James Dong const OMX_U8 ** ppBitStream, 820c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT * pBitOffset, 830c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16 * pDst, 840c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT QP, 850c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT shortVideoHeader 860c1bc742181ded4930842b46e9507372f0b1b963James Dong) 870c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 880c1bc742181ded4930842b46e9507372f0b1b963James Dong /* 64 elements are needed but to align it to 16 bytes need 890c1bc742181ded4930842b46e9507372f0b1b963James Dong 15 more elements of padding */ 900c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16 tempBuf[79]; 910c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16 *pTempBuf1; 920c1bc742181ded4930842b46e9507372f0b1b963James Dong OMXResult errorCode; 930c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Aligning the local buffers */ 940c1bc742181ded4930842b46e9507372f0b1b963James Dong pTempBuf1 = armAlignTo16Bytes(tempBuf); 950c1bc742181ded4930842b46e9507372f0b1b963James Dong 960c1bc742181ded4930842b46e9507372f0b1b963James Dong 970c1bc742181ded4930842b46e9507372f0b1b963James Dong /* VLD and zigzag */ 980c1bc742181ded4930842b46e9507372f0b1b963James Dong errorCode = omxVCM4P2_DecodeVLCZigzag_Inter(ppBitStream, pBitOffset, 990c1bc742181ded4930842b46e9507372f0b1b963James Dong pTempBuf1,shortVideoHeader); 1000c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetDataErrIf((errorCode != OMX_Sts_NoErr), errorCode); 1010c1bc742181ded4930842b46e9507372f0b1b963James Dong 1020c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Dequantization */ 1030c1bc742181ded4930842b46e9507372f0b1b963James Dong errorCode = omxVCM4P2_QuantInvInter_I( 1040c1bc742181ded4930842b46e9507372f0b1b963James Dong pTempBuf1, 1050c1bc742181ded4930842b46e9507372f0b1b963James Dong QP); 1060c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetDataErrIf((errorCode != OMX_Sts_NoErr), errorCode); 1070c1bc742181ded4930842b46e9507372f0b1b963James Dong 1080c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Inverse transform */ 1090c1bc742181ded4930842b46e9507372f0b1b963James Dong errorCode = omxVCM4P2_IDCT8x8blk(pTempBuf1, pDst); 1100c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetDataErrIf((errorCode != OMX_Sts_NoErr), errorCode); 1110c1bc742181ded4930842b46e9507372f0b1b963James Dong 1120c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 1130c1bc742181ded4930842b46e9507372f0b1b963James Dong} 1140c1bc742181ded4930842b46e9507372f0b1b963James Dong 1150c1bc742181ded4930842b46e9507372f0b1b963James Dong/* End of file */ 1160c1bc742181ded4930842b46e9507372f0b1b963James Dong 1170c1bc742181ded4930842b46e9507372f0b1b963James Dong 118