10c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 20c1bc742181ded4930842b46e9507372f0b1b963James Dong * 30c1bc742181ded4930842b46e9507372f0b1b963James Dong * File Name: omxVCM4P10_TransformQuant_ChromaDC.c 40c1bc742181ded4930842b46e9507372f0b1b963James Dong * OpenMAX DL: v1.0.2 50c1bc742181ded4930842b46e9507372f0b1b963James Dong * Revision: 9641 60c1bc742181ded4930842b46e9507372f0b1b963James Dong * Date: Thursday, February 7, 2008 70c1bc742181ded4930842b46e9507372f0b1b963James Dong * 80c1bc742181ded4930842b46e9507372f0b1b963James Dong * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. 90c1bc742181ded4930842b46e9507372f0b1b963James Dong * 100c1bc742181ded4930842b46e9507372f0b1b963James Dong * 110c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 120c1bc742181ded4930842b46e9507372f0b1b963James Dong * This function will calculate 4x4 hadamard transform of chroma DC 130c1bc742181ded4930842b46e9507372f0b1b963James Dong * coefficients and quantization 140c1bc742181ded4930842b46e9507372f0b1b963James Dong * 150c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 160c1bc742181ded4930842b46e9507372f0b1b963James Dong 170c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxtypes.h" 180c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armOMX.h" 190c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "omxVC.h" 200c1bc742181ded4930842b46e9507372f0b1b963James Dong 210c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armVC.h" 220c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "armCOMM.h" 230c1bc742181ded4930842b46e9507372f0b1b963James Dong 240c1bc742181ded4930842b46e9507372f0b1b963James Dong/** 250c1bc742181ded4930842b46e9507372f0b1b963James Dong * Function: omxVCM4P10_TransformQuant_ChromaDC (6.3.5.6.1) 260c1bc742181ded4930842b46e9507372f0b1b963James Dong * 270c1bc742181ded4930842b46e9507372f0b1b963James Dong * Description: 280c1bc742181ded4930842b46e9507372f0b1b963James Dong * This function performs 2x2 Hadamard transform of chroma DC coefficients 290c1bc742181ded4930842b46e9507372f0b1b963James Dong * and then quantizes the coefficients. 300c1bc742181ded4930842b46e9507372f0b1b963James Dong * 310c1bc742181ded4930842b46e9507372f0b1b963James Dong * Input Arguments: 320c1bc742181ded4930842b46e9507372f0b1b963James Dong * 330c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcDst - Pointer to the 2x2 array of chroma DC coefficients. 8-byte 340c1bc742181ded4930842b46e9507372f0b1b963James Dong * alignment required. 350c1bc742181ded4930842b46e9507372f0b1b963James Dong * iQP - Quantization parameter; must be in the range [0,51]. 360c1bc742181ded4930842b46e9507372f0b1b963James Dong * bIntra - Indicate whether this is an INTRA block. 1-INTRA, 0-INTER 370c1bc742181ded4930842b46e9507372f0b1b963James Dong * 380c1bc742181ded4930842b46e9507372f0b1b963James Dong * Output Arguments: 390c1bc742181ded4930842b46e9507372f0b1b963James Dong * 400c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcDst - Pointer to transformed and quantized coefficients. 8-byte 410c1bc742181ded4930842b46e9507372f0b1b963James Dong * alignment required. 420c1bc742181ded4930842b46e9507372f0b1b963James Dong * 430c1bc742181ded4930842b46e9507372f0b1b963James Dong * Return Value: 440c1bc742181ded4930842b46e9507372f0b1b963James Dong * 450c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_NoErr - no error 460c1bc742181ded4930842b46e9507372f0b1b963James Dong * OMX_Sts_BadArgErr - bad arguments; returned if any of the following 470c1bc742181ded4930842b46e9507372f0b1b963James Dong * conditions are true: 480c1bc742181ded4930842b46e9507372f0b1b963James Dong * - at least one of the following pointers is NULL: 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * pSrcDst 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * - pSrcDst is not aligned on an 8-byte boundary 510c1bc742181ded4930842b46e9507372f0b1b963James Dong * 520c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 530c1bc742181ded4930842b46e9507372f0b1b963James DongOMXResult omxVCM4P10_TransformQuant_ChromaDC( 540c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S16* pSrcDst, 550c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_U32 iQP, 560c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_U8 bIntra 570c1bc742181ded4930842b46e9507372f0b1b963James Dong) 580c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 590c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_INT i, j; 600c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S32 m[2][2]; 610c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S32 Value; 620c1bc742181ded4930842b46e9507372f0b1b963James Dong OMX_S32 QbitsPlusOne, Two_f, MF00; 630c1bc742181ded4930842b46e9507372f0b1b963James Dong 640c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Check for argument error */ 650c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(pSrcDst == NULL, OMX_Sts_BadArgErr); 660c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(armNot8ByteAligned(pSrcDst), OMX_Sts_BadArgErr); 670c1bc742181ded4930842b46e9507372f0b1b963James Dong armRetArgErrIf(iQP > 51, OMX_Sts_BadArgErr); 680c1bc742181ded4930842b46e9507372f0b1b963James Dong 690c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Hadamard Transform for 2x2 block */ 700c1bc742181ded4930842b46e9507372f0b1b963James Dong m[0][0] = pSrcDst[0] + pSrcDst[1] + pSrcDst[2] + pSrcDst[3]; 710c1bc742181ded4930842b46e9507372f0b1b963James Dong m[0][1] = pSrcDst[0] - pSrcDst[1] + pSrcDst[2] - pSrcDst[3]; 720c1bc742181ded4930842b46e9507372f0b1b963James Dong m[1][0] = pSrcDst[0] + pSrcDst[1] - pSrcDst[2] - pSrcDst[3]; 730c1bc742181ded4930842b46e9507372f0b1b963James Dong m[1][1] = pSrcDst[0] - pSrcDst[1] - pSrcDst[2] + pSrcDst[3]; 740c1bc742181ded4930842b46e9507372f0b1b963James Dong 750c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Quantization */ 760c1bc742181ded4930842b46e9507372f0b1b963James Dong QbitsPlusOne = ARM_M4P10_Q_OFFSET + 1 + (iQP / 6); /*floor (QP/6)*/ 770c1bc742181ded4930842b46e9507372f0b1b963James Dong MF00 = armVCM4P10_MFMatrix [iQP % 6][0]; 780c1bc742181ded4930842b46e9507372f0b1b963James Dong 790c1bc742181ded4930842b46e9507372f0b1b963James Dong Two_f = (1 << QbitsPlusOne) / (bIntra ? 3 : 6); /* 3->INTRA, 6->INTER */ 800c1bc742181ded4930842b46e9507372f0b1b963James Dong 810c1bc742181ded4930842b46e9507372f0b1b963James Dong /* Scaling */ 820c1bc742181ded4930842b46e9507372f0b1b963James Dong for (j = 0; j < 2; j++) 830c1bc742181ded4930842b46e9507372f0b1b963James Dong { 840c1bc742181ded4930842b46e9507372f0b1b963James Dong for (i = 0; i < 2; i++) 850c1bc742181ded4930842b46e9507372f0b1b963James Dong { 860c1bc742181ded4930842b46e9507372f0b1b963James Dong Value = (armAbs(m[j][i]) * MF00 + Two_f) >> QbitsPlusOne; 870c1bc742181ded4930842b46e9507372f0b1b963James Dong pSrcDst[j * 2 + i] = (OMX_S16)((m[j][i] < 0) ? -Value : Value); 880c1bc742181ded4930842b46e9507372f0b1b963James Dong } 890c1bc742181ded4930842b46e9507372f0b1b963James Dong } 900c1bc742181ded4930842b46e9507372f0b1b963James Dong 910c1bc742181ded4930842b46e9507372f0b1b963James Dong return OMX_Sts_NoErr; 920c1bc742181ded4930842b46e9507372f0b1b963James Dong} 930c1bc742181ded4930842b46e9507372f0b1b963James Dong 940c1bc742181ded4930842b46e9507372f0b1b963James Dong/***************************************************************************** 950c1bc742181ded4930842b46e9507372f0b1b963James Dong * END OF FILE 960c1bc742181ded4930842b46e9507372f0b1b963James Dong *****************************************************************************/ 970c1bc742181ded4930842b46e9507372f0b1b963James Dong 98