10c1bc742181ded4930842b46e9507372f0b1b963James Dong/* 20c1bc742181ded4930842b46e9507372f0b1b963James Dong * Copyright (C) 2009 The Android Open Source Project 30c1bc742181ded4930842b46e9507372f0b1b963James Dong * 40c1bc742181ded4930842b46e9507372f0b1b963James Dong * Licensed under the Apache License, Version 2.0 (the "License"); 50c1bc742181ded4930842b46e9507372f0b1b963James Dong * you may not use this file except in compliance with the License. 60c1bc742181ded4930842b46e9507372f0b1b963James Dong * You may obtain a copy of the License at 70c1bc742181ded4930842b46e9507372f0b1b963James Dong * 80c1bc742181ded4930842b46e9507372f0b1b963James Dong * http://www.apache.org/licenses/LICENSE-2.0 90c1bc742181ded4930842b46e9507372f0b1b963James Dong * 100c1bc742181ded4930842b46e9507372f0b1b963James Dong * Unless required by applicable law or agreed to in writing, software 110c1bc742181ded4930842b46e9507372f0b1b963James Dong * distributed under the License is distributed on an "AS IS" BASIS, 120c1bc742181ded4930842b46e9507372f0b1b963James Dong * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 130c1bc742181ded4930842b46e9507372f0b1b963James Dong * See the License for the specific language governing permissions and 140c1bc742181ded4930842b46e9507372f0b1b963James Dong * limitations under the License. 150c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 160c1bc742181ded4930842b46e9507372f0b1b963James Dong 170c1bc742181ded4930842b46e9507372f0b1b963James Dong/*------------------------------------------------------------------------------ 180c1bc742181ded4930842b46e9507372f0b1b963James Dong 190c1bc742181ded4930842b46e9507372f0b1b963James Dong Table of contents 200c1bc742181ded4930842b46e9507372f0b1b963James Dong 210c1bc742181ded4930842b46e9507372f0b1b963James Dong 1. Include headers 220c1bc742181ded4930842b46e9507372f0b1b963James Dong 2. External compiler flags 230c1bc742181ded4930842b46e9507372f0b1b963James Dong 3. Module defines 240c1bc742181ded4930842b46e9507372f0b1b963James Dong 4. Local function prototypes 250c1bc742181ded4930842b46e9507372f0b1b963James Dong 5. Functions 260c1bc742181ded4930842b46e9507372f0b1b963James Dong h264bsdProcessBlock 270c1bc742181ded4930842b46e9507372f0b1b963James Dong h264bsdProcessLumaDc 280c1bc742181ded4930842b46e9507372f0b1b963James Dong h264bsdProcessChromaDc 290c1bc742181ded4930842b46e9507372f0b1b963James Dong 300c1bc742181ded4930842b46e9507372f0b1b963James Dong------------------------------------------------------------------------------*/ 310c1bc742181ded4930842b46e9507372f0b1b963James Dong 320c1bc742181ded4930842b46e9507372f0b1b963James Dong/*------------------------------------------------------------------------------ 330c1bc742181ded4930842b46e9507372f0b1b963James Dong 1. Include headers 340c1bc742181ded4930842b46e9507372f0b1b963James Dong------------------------------------------------------------------------------*/ 350c1bc742181ded4930842b46e9507372f0b1b963James Dong 360c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "basetype.h" 370c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "h264bsd_transform.h" 380c1bc742181ded4930842b46e9507372f0b1b963James Dong#include "h264bsd_util.h" 390c1bc742181ded4930842b46e9507372f0b1b963James Dong 400c1bc742181ded4930842b46e9507372f0b1b963James Dong/*------------------------------------------------------------------------------ 410c1bc742181ded4930842b46e9507372f0b1b963James Dong 2. External compiler flags 420c1bc742181ded4930842b46e9507372f0b1b963James Dong-------------------------------------------------------------------------------- 430c1bc742181ded4930842b46e9507372f0b1b963James Dong 440c1bc742181ded4930842b46e9507372f0b1b963James Dong-------------------------------------------------------------------------------- 450c1bc742181ded4930842b46e9507372f0b1b963James Dong 3. Module defines 460c1bc742181ded4930842b46e9507372f0b1b963James Dong------------------------------------------------------------------------------*/ 470c1bc742181ded4930842b46e9507372f0b1b963James Dong 480c1bc742181ded4930842b46e9507372f0b1b963James Dong/* Switch off the following Lint messages for this file: 490c1bc742181ded4930842b46e9507372f0b1b963James Dong * Info 701: Shift left of signed quantity (int) 500c1bc742181ded4930842b46e9507372f0b1b963James Dong * Info 702: Shift right of signed quantity (int) 510c1bc742181ded4930842b46e9507372f0b1b963James Dong */ 520c1bc742181ded4930842b46e9507372f0b1b963James Dong/*lint -e701 -e702 */ 530c1bc742181ded4930842b46e9507372f0b1b963James Dong 540c1bc742181ded4930842b46e9507372f0b1b963James Dong/* LevelScale function */ 550c1bc742181ded4930842b46e9507372f0b1b963James Dongstatic const i32 levelScale[6][3] = { 560c1bc742181ded4930842b46e9507372f0b1b963James Dong {10,13,16}, {11,14,18}, {13,16,20}, {14,18,23}, {16,20,25}, {18,23,29}}; 570c1bc742181ded4930842b46e9507372f0b1b963James Dong 580c1bc742181ded4930842b46e9507372f0b1b963James Dong/* qp % 6 as a function of qp */ 590c1bc742181ded4930842b46e9507372f0b1b963James Dongstatic const u8 qpMod6[52] = {0,1,2,3,4,5,0,1,2,3,4,5,0,1,2,3,4,5,0,1,2,3,4,5, 600c1bc742181ded4930842b46e9507372f0b1b963James Dong 0,1,2,3,4,5,0,1,2,3,4,5,0,1,2,3,4,5,0,1,2,3,4,5,0,1,2,3}; 610c1bc742181ded4930842b46e9507372f0b1b963James Dong 620c1bc742181ded4930842b46e9507372f0b1b963James Dong/* qp / 6 as a function of qp */ 630c1bc742181ded4930842b46e9507372f0b1b963James Dongstatic const u8 qpDiv6[52] = {0,0,0,0,0,0,1,1,1,1,1,1,2,2,2,2,2,2,3,3,3,3,3,3, 640c1bc742181ded4930842b46e9507372f0b1b963James Dong 4,4,4,4,4,4,5,5,5,5,5,5,6,6,6,6,6,6,7,7,7,7,7,7,8,8,8,8}; 650c1bc742181ded4930842b46e9507372f0b1b963James Dong 660c1bc742181ded4930842b46e9507372f0b1b963James Dong/*------------------------------------------------------------------------------ 670c1bc742181ded4930842b46e9507372f0b1b963James Dong 4. Local function prototypes 680c1bc742181ded4930842b46e9507372f0b1b963James Dong------------------------------------------------------------------------------*/ 690c1bc742181ded4930842b46e9507372f0b1b963James Dong 700c1bc742181ded4930842b46e9507372f0b1b963James Dong/*------------------------------------------------------------------------------ 710c1bc742181ded4930842b46e9507372f0b1b963James Dong 720c1bc742181ded4930842b46e9507372f0b1b963James Dong Function: h264bsdProcessBlock 730c1bc742181ded4930842b46e9507372f0b1b963James Dong 740c1bc742181ded4930842b46e9507372f0b1b963James Dong Functional description: 750c1bc742181ded4930842b46e9507372f0b1b963James Dong Function performs inverse zig-zag scan, inverse scaling and 760c1bc742181ded4930842b46e9507372f0b1b963James Dong inverse transform for a luma or a chroma residual block 770c1bc742181ded4930842b46e9507372f0b1b963James Dong 780c1bc742181ded4930842b46e9507372f0b1b963James Dong Inputs: 790c1bc742181ded4930842b46e9507372f0b1b963James Dong data pointer to data to be processed 800c1bc742181ded4930842b46e9507372f0b1b963James Dong qp quantization parameter 810c1bc742181ded4930842b46e9507372f0b1b963James Dong skip skip processing of data[0], set to non-zero value 820c1bc742181ded4930842b46e9507372f0b1b963James Dong if dc coeff hanled separately 830c1bc742181ded4930842b46e9507372f0b1b963James Dong coeffMap 16 lsb's indicate which coeffs are non-zero, 840c1bc742181ded4930842b46e9507372f0b1b963James Dong bit 0 (lsb) for coeff 0, bit 1 for coeff 1 etc. 850c1bc742181ded4930842b46e9507372f0b1b963James Dong 860c1bc742181ded4930842b46e9507372f0b1b963James Dong Outputs: 870c1bc742181ded4930842b46e9507372f0b1b963James Dong data processed data 880c1bc742181ded4930842b46e9507372f0b1b963James Dong 890c1bc742181ded4930842b46e9507372f0b1b963James Dong Returns: 900c1bc742181ded4930842b46e9507372f0b1b963James Dong HANTRO_OK success 910c1bc742181ded4930842b46e9507372f0b1b963James Dong HANTRO_NOK processed data not in valid range [-512, 511] 920c1bc742181ded4930842b46e9507372f0b1b963James Dong 930c1bc742181ded4930842b46e9507372f0b1b963James Dong------------------------------------------------------------------------------*/ 940c1bc742181ded4930842b46e9507372f0b1b963James Dongu32 h264bsdProcessBlock(i32 *data, u32 qp, u32 skip, u32 coeffMap) 950c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 960c1bc742181ded4930842b46e9507372f0b1b963James Dong 970c1bc742181ded4930842b46e9507372f0b1b963James Dong/* Variables */ 980c1bc742181ded4930842b46e9507372f0b1b963James Dong 990c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 tmp0, tmp1, tmp2, tmp3; 1000c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 d1, d2, d3; 1010c1bc742181ded4930842b46e9507372f0b1b963James Dong u32 row,col; 1020c1bc742181ded4930842b46e9507372f0b1b963James Dong u32 qpDiv; 1030c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 *ptr; 1040c1bc742181ded4930842b46e9507372f0b1b963James Dong 1050c1bc742181ded4930842b46e9507372f0b1b963James Dong/* Code */ 1060c1bc742181ded4930842b46e9507372f0b1b963James Dong 1070c1bc742181ded4930842b46e9507372f0b1b963James Dong qpDiv = qpDiv6[qp]; 1080c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = levelScale[qpMod6[qp]][0] << qpDiv; 1090c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = levelScale[qpMod6[qp]][1] << qpDiv; 1100c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = levelScale[qpMod6[qp]][2] << qpDiv; 1110c1bc742181ded4930842b46e9507372f0b1b963James Dong 1120c1bc742181ded4930842b46e9507372f0b1b963James Dong if (!skip) 1130c1bc742181ded4930842b46e9507372f0b1b963James Dong data[0] = (data[0] * tmp1); 1140c1bc742181ded4930842b46e9507372f0b1b963James Dong 1150c1bc742181ded4930842b46e9507372f0b1b963James Dong /* at least one of the rows 1, 2 or 3 contain non-zero coeffs, mask takes 1160c1bc742181ded4930842b46e9507372f0b1b963James Dong * the scanning order into account */ 1170c1bc742181ded4930842b46e9507372f0b1b963James Dong if (coeffMap & 0xFF9C) 1180c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1190c1bc742181ded4930842b46e9507372f0b1b963James Dong /* do the zig-zag scan and inverse quantization */ 1200c1bc742181ded4930842b46e9507372f0b1b963James Dong d1 = data[1]; 1210c1bc742181ded4930842b46e9507372f0b1b963James Dong d2 = data[14]; 1220c1bc742181ded4930842b46e9507372f0b1b963James Dong d3 = data[15]; 1230c1bc742181ded4930842b46e9507372f0b1b963James Dong data[1] = (d1 * tmp2); 1240c1bc742181ded4930842b46e9507372f0b1b963James Dong data[14] = (d2 * tmp2); 1250c1bc742181ded4930842b46e9507372f0b1b963James Dong data[15] = (d3 * tmp3); 1260c1bc742181ded4930842b46e9507372f0b1b963James Dong 1270c1bc742181ded4930842b46e9507372f0b1b963James Dong d1 = data[2]; 1280c1bc742181ded4930842b46e9507372f0b1b963James Dong d2 = data[5]; 1290c1bc742181ded4930842b46e9507372f0b1b963James Dong d3 = data[4]; 1300c1bc742181ded4930842b46e9507372f0b1b963James Dong data[4] = (d1 * tmp2); 1310c1bc742181ded4930842b46e9507372f0b1b963James Dong data[2] = (d2 * tmp1); 1320c1bc742181ded4930842b46e9507372f0b1b963James Dong data[5] = (d3 * tmp3); 1330c1bc742181ded4930842b46e9507372f0b1b963James Dong 1340c1bc742181ded4930842b46e9507372f0b1b963James Dong d1 = data[8]; 1350c1bc742181ded4930842b46e9507372f0b1b963James Dong d2 = data[3]; 1360c1bc742181ded4930842b46e9507372f0b1b963James Dong d3 = data[6]; 1370c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = (d1 * tmp2); 1380c1bc742181ded4930842b46e9507372f0b1b963James Dong data[8] = (d2 * tmp1); 1390c1bc742181ded4930842b46e9507372f0b1b963James Dong data[3] = (d3 * tmp2); 1400c1bc742181ded4930842b46e9507372f0b1b963James Dong d1 = data[7]; 1410c1bc742181ded4930842b46e9507372f0b1b963James Dong d2 = data[12]; 1420c1bc742181ded4930842b46e9507372f0b1b963James Dong d3 = data[9]; 1430c1bc742181ded4930842b46e9507372f0b1b963James Dong data[6] = (d1 * tmp2); 1440c1bc742181ded4930842b46e9507372f0b1b963James Dong data[7] = (d2 * tmp3); 1450c1bc742181ded4930842b46e9507372f0b1b963James Dong data[12] = (d3 * tmp2); 1460c1bc742181ded4930842b46e9507372f0b1b963James Dong data[9] = tmp0; 1470c1bc742181ded4930842b46e9507372f0b1b963James Dong 1480c1bc742181ded4930842b46e9507372f0b1b963James Dong d1 = data[10]; 1490c1bc742181ded4930842b46e9507372f0b1b963James Dong d2 = data[11]; 1500c1bc742181ded4930842b46e9507372f0b1b963James Dong d3 = data[13]; 1510c1bc742181ded4930842b46e9507372f0b1b963James Dong data[13] = (d1 * tmp3); 1520c1bc742181ded4930842b46e9507372f0b1b963James Dong data[10] = (d2 * tmp1); 1530c1bc742181ded4930842b46e9507372f0b1b963James Dong data[11] = (d3 * tmp2); 1540c1bc742181ded4930842b46e9507372f0b1b963James Dong 1550c1bc742181ded4930842b46e9507372f0b1b963James Dong /* horizontal transform */ 1560c1bc742181ded4930842b46e9507372f0b1b963James Dong for (row = 4, ptr = data; row--; ptr += 4) 1570c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1580c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = ptr[0] + ptr[2]; 1590c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = ptr[0] - ptr[2]; 1600c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = (ptr[1] >> 1) - ptr[3]; 1610c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = ptr[1] + (ptr[3] >> 1); 1620c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[0] = tmp0 + tmp3; 1630c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[1] = tmp1 + tmp2; 1640c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[2] = tmp1 - tmp2; 1650c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[3] = tmp0 - tmp3; 1660c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1670c1bc742181ded4930842b46e9507372f0b1b963James Dong 1680c1bc742181ded4930842b46e9507372f0b1b963James Dong /*lint +e661 +e662*/ 1690c1bc742181ded4930842b46e9507372f0b1b963James Dong /* then vertical transform */ 1700c1bc742181ded4930842b46e9507372f0b1b963James Dong for (col = 4; col--; data++) 1710c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1720c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[0] + data[8]; 1730c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = data[0] - data[8]; 1740c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = (data[4] >> 1) - data[12]; 1750c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = data[4] + (data[12] >> 1); 1760c1bc742181ded4930842b46e9507372f0b1b963James Dong data[0 ] = (tmp0 + tmp3 + 32)>>6; 1770c1bc742181ded4930842b46e9507372f0b1b963James Dong data[4 ] = (tmp1 + tmp2 + 32)>>6; 1780c1bc742181ded4930842b46e9507372f0b1b963James Dong data[8 ] = (tmp1 - tmp2 + 32)>>6; 1790c1bc742181ded4930842b46e9507372f0b1b963James Dong data[12] = (tmp0 - tmp3 + 32)>>6; 1800c1bc742181ded4930842b46e9507372f0b1b963James Dong /* check that each value is in the range [-512,511] */ 1810c1bc742181ded4930842b46e9507372f0b1b963James Dong if (((u32)(data[0] + 512) > 1023) || 1820c1bc742181ded4930842b46e9507372f0b1b963James Dong ((u32)(data[4] + 512) > 1023) || 1830c1bc742181ded4930842b46e9507372f0b1b963James Dong ((u32)(data[8] + 512) > 1023) || 1840c1bc742181ded4930842b46e9507372f0b1b963James Dong ((u32)(data[12] + 512) > 1023) ) 1850c1bc742181ded4930842b46e9507372f0b1b963James Dong return(HANTRO_NOK); 1860c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1870c1bc742181ded4930842b46e9507372f0b1b963James Dong } 1880c1bc742181ded4930842b46e9507372f0b1b963James Dong else /* rows 1, 2 and 3 are zero */ 1890c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1900c1bc742181ded4930842b46e9507372f0b1b963James Dong /* only dc-coeff is non-zero, i.e. coeffs at original positions 1910c1bc742181ded4930842b46e9507372f0b1b963James Dong * 1, 5 and 6 are zero */ 1920c1bc742181ded4930842b46e9507372f0b1b963James Dong if ((coeffMap & 0x62) == 0) 1930c1bc742181ded4930842b46e9507372f0b1b963James Dong { 1940c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = (data[0] + 32) >> 6; 1950c1bc742181ded4930842b46e9507372f0b1b963James Dong /* check that value is in the range [-512,511] */ 1960c1bc742181ded4930842b46e9507372f0b1b963James Dong if ((u32)(tmp0 + 512) > 1023) 1970c1bc742181ded4930842b46e9507372f0b1b963James Dong return(HANTRO_NOK); 1980c1bc742181ded4930842b46e9507372f0b1b963James Dong data[0] = data[1] = data[2] = data[3] = data[4] = data[5] = 1990c1bc742181ded4930842b46e9507372f0b1b963James Dong data[6] = data[7] = data[8] = data[9] = data[10] = 2000c1bc742181ded4930842b46e9507372f0b1b963James Dong data[11] = data[12] = data[13] = data[14] = data[15] = 2010c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0; 2020c1bc742181ded4930842b46e9507372f0b1b963James Dong } 2030c1bc742181ded4930842b46e9507372f0b1b963James Dong else /* at least one of the coeffs 1, 5 or 6 is non-zero */ 2040c1bc742181ded4930842b46e9507372f0b1b963James Dong { 2050c1bc742181ded4930842b46e9507372f0b1b963James Dong data[1] = (data[1] * tmp2); 2060c1bc742181ded4930842b46e9507372f0b1b963James Dong data[2] = (data[5] * tmp1); 2070c1bc742181ded4930842b46e9507372f0b1b963James Dong data[3] = (data[6] * tmp2); 2080c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[0] + data[2]; 2090c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = data[0] - data[2]; 2100c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = (data[1] >> 1) - data[3]; 2110c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = data[1] + (data[3] >> 1); 2120c1bc742181ded4930842b46e9507372f0b1b963James Dong data[0] = (tmp0 + tmp3 + 32)>>6; 2130c1bc742181ded4930842b46e9507372f0b1b963James Dong data[1] = (tmp1 + tmp2 + 32)>>6; 2140c1bc742181ded4930842b46e9507372f0b1b963James Dong data[2] = (tmp1 - tmp2 + 32)>>6; 2150c1bc742181ded4930842b46e9507372f0b1b963James Dong data[3] = (tmp0 - tmp3 + 32)>>6; 2160c1bc742181ded4930842b46e9507372f0b1b963James Dong data[4] = data[8] = data[12] = data[0]; 2170c1bc742181ded4930842b46e9507372f0b1b963James Dong data[5] = data[9] = data[13] = data[1]; 2180c1bc742181ded4930842b46e9507372f0b1b963James Dong data[6] = data[10] = data[14] = data[2]; 2190c1bc742181ded4930842b46e9507372f0b1b963James Dong data[7] = data[11] = data[15] = data[3]; 2200c1bc742181ded4930842b46e9507372f0b1b963James Dong /* check that each value is in the range [-512,511] */ 2210c1bc742181ded4930842b46e9507372f0b1b963James Dong if (((u32)(data[0] + 512) > 1023) || 2220c1bc742181ded4930842b46e9507372f0b1b963James Dong ((u32)(data[1] + 512) > 1023) || 2230c1bc742181ded4930842b46e9507372f0b1b963James Dong ((u32)(data[2] + 512) > 1023) || 2240c1bc742181ded4930842b46e9507372f0b1b963James Dong ((u32)(data[3] + 512) > 1023) ) 2250c1bc742181ded4930842b46e9507372f0b1b963James Dong return(HANTRO_NOK); 2260c1bc742181ded4930842b46e9507372f0b1b963James Dong } 2270c1bc742181ded4930842b46e9507372f0b1b963James Dong } 2280c1bc742181ded4930842b46e9507372f0b1b963James Dong 2290c1bc742181ded4930842b46e9507372f0b1b963James Dong return(HANTRO_OK); 2300c1bc742181ded4930842b46e9507372f0b1b963James Dong 2310c1bc742181ded4930842b46e9507372f0b1b963James Dong} 2320c1bc742181ded4930842b46e9507372f0b1b963James Dong 2330c1bc742181ded4930842b46e9507372f0b1b963James Dong/*------------------------------------------------------------------------------ 2340c1bc742181ded4930842b46e9507372f0b1b963James Dong 2350c1bc742181ded4930842b46e9507372f0b1b963James Dong Function: h264bsdProcessLumaDc 2360c1bc742181ded4930842b46e9507372f0b1b963James Dong 2370c1bc742181ded4930842b46e9507372f0b1b963James Dong Functional description: 2380c1bc742181ded4930842b46e9507372f0b1b963James Dong Function performs inverse zig-zag scan, inverse transform and 2390c1bc742181ded4930842b46e9507372f0b1b963James Dong inverse scaling for a luma DC coefficients block 2400c1bc742181ded4930842b46e9507372f0b1b963James Dong 2410c1bc742181ded4930842b46e9507372f0b1b963James Dong Inputs: 2420c1bc742181ded4930842b46e9507372f0b1b963James Dong data pointer to data to be processed 2430c1bc742181ded4930842b46e9507372f0b1b963James Dong qp quantization parameter 2440c1bc742181ded4930842b46e9507372f0b1b963James Dong 2450c1bc742181ded4930842b46e9507372f0b1b963James Dong Outputs: 2460c1bc742181ded4930842b46e9507372f0b1b963James Dong data processed data 2470c1bc742181ded4930842b46e9507372f0b1b963James Dong 2480c1bc742181ded4930842b46e9507372f0b1b963James Dong Returns: 2490c1bc742181ded4930842b46e9507372f0b1b963James Dong none 2500c1bc742181ded4930842b46e9507372f0b1b963James Dong 2510c1bc742181ded4930842b46e9507372f0b1b963James Dong------------------------------------------------------------------------------*/ 2520c1bc742181ded4930842b46e9507372f0b1b963James Dongvoid h264bsdProcessLumaDc(i32 *data, u32 qp) 2530c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 2540c1bc742181ded4930842b46e9507372f0b1b963James Dong 2550c1bc742181ded4930842b46e9507372f0b1b963James Dong/* Variables */ 2560c1bc742181ded4930842b46e9507372f0b1b963James Dong 2570c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 tmp0, tmp1, tmp2, tmp3; 2580c1bc742181ded4930842b46e9507372f0b1b963James Dong u32 row,col; 2590c1bc742181ded4930842b46e9507372f0b1b963James Dong u32 qpMod, qpDiv; 2600c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 levScale; 2610c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 *ptr; 2620c1bc742181ded4930842b46e9507372f0b1b963James Dong 2630c1bc742181ded4930842b46e9507372f0b1b963James Dong/* Code */ 2640c1bc742181ded4930842b46e9507372f0b1b963James Dong 2650c1bc742181ded4930842b46e9507372f0b1b963James Dong qpMod = qpMod6[qp]; 2660c1bc742181ded4930842b46e9507372f0b1b963James Dong qpDiv = qpDiv6[qp]; 2670c1bc742181ded4930842b46e9507372f0b1b963James Dong 2680c1bc742181ded4930842b46e9507372f0b1b963James Dong /* zig-zag scan */ 2690c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[2]; 2700c1bc742181ded4930842b46e9507372f0b1b963James Dong data[2] = data[5]; 2710c1bc742181ded4930842b46e9507372f0b1b963James Dong data[5] = data[4]; 2720c1bc742181ded4930842b46e9507372f0b1b963James Dong data[4] = tmp0; 2730c1bc742181ded4930842b46e9507372f0b1b963James Dong 2740c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[8]; 2750c1bc742181ded4930842b46e9507372f0b1b963James Dong data[8] = data[3]; 2760c1bc742181ded4930842b46e9507372f0b1b963James Dong data[3] = data[6]; 2770c1bc742181ded4930842b46e9507372f0b1b963James Dong data[6] = data[7]; 2780c1bc742181ded4930842b46e9507372f0b1b963James Dong data[7] = data[12]; 2790c1bc742181ded4930842b46e9507372f0b1b963James Dong data[12] = data[9]; 2800c1bc742181ded4930842b46e9507372f0b1b963James Dong data[9] = tmp0; 2810c1bc742181ded4930842b46e9507372f0b1b963James Dong 2820c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[10]; 2830c1bc742181ded4930842b46e9507372f0b1b963James Dong data[10] = data[11]; 2840c1bc742181ded4930842b46e9507372f0b1b963James Dong data[11] = data[13]; 2850c1bc742181ded4930842b46e9507372f0b1b963James Dong data[13] = tmp0; 2860c1bc742181ded4930842b46e9507372f0b1b963James Dong 2870c1bc742181ded4930842b46e9507372f0b1b963James Dong /* horizontal transform */ 2880c1bc742181ded4930842b46e9507372f0b1b963James Dong for (row = 4, ptr = data; row--; ptr += 4) 2890c1bc742181ded4930842b46e9507372f0b1b963James Dong { 2900c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = ptr[0] + ptr[2]; 2910c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = ptr[0] - ptr[2]; 2920c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = ptr[1] - ptr[3]; 2930c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = ptr[1] + ptr[3]; 2940c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[0] = tmp0 + tmp3; 2950c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[1] = tmp1 + tmp2; 2960c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[2] = tmp1 - tmp2; 2970c1bc742181ded4930842b46e9507372f0b1b963James Dong ptr[3] = tmp0 - tmp3; 2980c1bc742181ded4930842b46e9507372f0b1b963James Dong } 2990c1bc742181ded4930842b46e9507372f0b1b963James Dong 3000c1bc742181ded4930842b46e9507372f0b1b963James Dong /*lint +e661 +e662*/ 3010c1bc742181ded4930842b46e9507372f0b1b963James Dong /* then vertical transform and inverse scaling */ 3020c1bc742181ded4930842b46e9507372f0b1b963James Dong levScale = levelScale[ qpMod ][0]; 3030c1bc742181ded4930842b46e9507372f0b1b963James Dong if (qp >= 12) 3040c1bc742181ded4930842b46e9507372f0b1b963James Dong { 3050c1bc742181ded4930842b46e9507372f0b1b963James Dong levScale <<= (qpDiv-2); 3060c1bc742181ded4930842b46e9507372f0b1b963James Dong for (col = 4; col--; data++) 3070c1bc742181ded4930842b46e9507372f0b1b963James Dong { 3080c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[0] + data[8 ]; 3090c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = data[0] - data[8 ]; 3100c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = data[4] - data[12]; 3110c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = data[4] + data[12]; 3120c1bc742181ded4930842b46e9507372f0b1b963James Dong data[0 ] = ((tmp0 + tmp3)*levScale); 3130c1bc742181ded4930842b46e9507372f0b1b963James Dong data[4 ] = ((tmp1 + tmp2)*levScale); 3140c1bc742181ded4930842b46e9507372f0b1b963James Dong data[8 ] = ((tmp1 - tmp2)*levScale); 3150c1bc742181ded4930842b46e9507372f0b1b963James Dong data[12] = ((tmp0 - tmp3)*levScale); 3160c1bc742181ded4930842b46e9507372f0b1b963James Dong } 3170c1bc742181ded4930842b46e9507372f0b1b963James Dong } 3180c1bc742181ded4930842b46e9507372f0b1b963James Dong else 3190c1bc742181ded4930842b46e9507372f0b1b963James Dong { 3200c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 tmp; 3210c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp = ((1 - qpDiv) == 0) ? 1 : 2; 3220c1bc742181ded4930842b46e9507372f0b1b963James Dong for (col = 4; col--; data++) 3230c1bc742181ded4930842b46e9507372f0b1b963James Dong { 3240c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[0] + data[8 ]; 3250c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = data[0] - data[8 ]; 3260c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = data[4] - data[12]; 3270c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = data[4] + data[12]; 3280c1bc742181ded4930842b46e9507372f0b1b963James Dong data[0 ] = ((tmp0 + tmp3)*levScale+tmp) >> (2-qpDiv); 3290c1bc742181ded4930842b46e9507372f0b1b963James Dong data[4 ] = ((tmp1 + tmp2)*levScale+tmp) >> (2-qpDiv); 3300c1bc742181ded4930842b46e9507372f0b1b963James Dong data[8 ] = ((tmp1 - tmp2)*levScale+tmp) >> (2-qpDiv); 3310c1bc742181ded4930842b46e9507372f0b1b963James Dong data[12] = ((tmp0 - tmp3)*levScale+tmp) >> (2-qpDiv); 3320c1bc742181ded4930842b46e9507372f0b1b963James Dong } 3330c1bc742181ded4930842b46e9507372f0b1b963James Dong } 3340c1bc742181ded4930842b46e9507372f0b1b963James Dong 3350c1bc742181ded4930842b46e9507372f0b1b963James Dong} 3360c1bc742181ded4930842b46e9507372f0b1b963James Dong 3370c1bc742181ded4930842b46e9507372f0b1b963James Dong/*------------------------------------------------------------------------------ 3380c1bc742181ded4930842b46e9507372f0b1b963James Dong 3390c1bc742181ded4930842b46e9507372f0b1b963James Dong Function: h264bsdProcessChromaDc 3400c1bc742181ded4930842b46e9507372f0b1b963James Dong 3410c1bc742181ded4930842b46e9507372f0b1b963James Dong Functional description: 3420c1bc742181ded4930842b46e9507372f0b1b963James Dong Function performs inverse transform and inverse scaling for a 3430c1bc742181ded4930842b46e9507372f0b1b963James Dong chroma DC coefficients block 3440c1bc742181ded4930842b46e9507372f0b1b963James Dong 3450c1bc742181ded4930842b46e9507372f0b1b963James Dong Inputs: 3460c1bc742181ded4930842b46e9507372f0b1b963James Dong data pointer to data to be processed 3470c1bc742181ded4930842b46e9507372f0b1b963James Dong qp quantization parameter 3480c1bc742181ded4930842b46e9507372f0b1b963James Dong 3490c1bc742181ded4930842b46e9507372f0b1b963James Dong Outputs: 3500c1bc742181ded4930842b46e9507372f0b1b963James Dong data processed data 3510c1bc742181ded4930842b46e9507372f0b1b963James Dong 3520c1bc742181ded4930842b46e9507372f0b1b963James Dong Returns: 3530c1bc742181ded4930842b46e9507372f0b1b963James Dong none 3540c1bc742181ded4930842b46e9507372f0b1b963James Dong 3550c1bc742181ded4930842b46e9507372f0b1b963James Dong------------------------------------------------------------------------------*/ 3560c1bc742181ded4930842b46e9507372f0b1b963James Dongvoid h264bsdProcessChromaDc(i32 *data, u32 qp) 3570c1bc742181ded4930842b46e9507372f0b1b963James Dong{ 3580c1bc742181ded4930842b46e9507372f0b1b963James Dong 3590c1bc742181ded4930842b46e9507372f0b1b963James Dong/* Variables */ 3600c1bc742181ded4930842b46e9507372f0b1b963James Dong 3610c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 tmp0, tmp1, tmp2, tmp3; 3620c1bc742181ded4930842b46e9507372f0b1b963James Dong u32 qpDiv; 3630c1bc742181ded4930842b46e9507372f0b1b963James Dong i32 levScale; 3640c1bc742181ded4930842b46e9507372f0b1b963James Dong u32 levShift; 3650c1bc742181ded4930842b46e9507372f0b1b963James Dong 3660c1bc742181ded4930842b46e9507372f0b1b963James Dong/* Code */ 3670c1bc742181ded4930842b46e9507372f0b1b963James Dong 3680c1bc742181ded4930842b46e9507372f0b1b963James Dong qpDiv = qpDiv6[qp]; 3690c1bc742181ded4930842b46e9507372f0b1b963James Dong levScale = levelScale[ qpMod6[qp] ][0]; 3700c1bc742181ded4930842b46e9507372f0b1b963James Dong 3710c1bc742181ded4930842b46e9507372f0b1b963James Dong if (qp >= 6) 3720c1bc742181ded4930842b46e9507372f0b1b963James Dong { 3730c1bc742181ded4930842b46e9507372f0b1b963James Dong levScale <<= (qpDiv-1); 3740c1bc742181ded4930842b46e9507372f0b1b963James Dong levShift = 0; 3750c1bc742181ded4930842b46e9507372f0b1b963James Dong } 3760c1bc742181ded4930842b46e9507372f0b1b963James Dong else 3770c1bc742181ded4930842b46e9507372f0b1b963James Dong { 3780c1bc742181ded4930842b46e9507372f0b1b963James Dong levShift = 1; 3790c1bc742181ded4930842b46e9507372f0b1b963James Dong } 3800c1bc742181ded4930842b46e9507372f0b1b963James Dong 3810c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[0] + data[2]; 3820c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = data[0] - data[2]; 3830c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = data[1] - data[3]; 3840c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = data[1] + data[3]; 3850c1bc742181ded4930842b46e9507372f0b1b963James Dong data[0] = ((tmp0 + tmp3) * levScale) >> levShift; 3860c1bc742181ded4930842b46e9507372f0b1b963James Dong data[1] = ((tmp0 - tmp3) * levScale) >> levShift; 3870c1bc742181ded4930842b46e9507372f0b1b963James Dong data[2] = ((tmp1 + tmp2) * levScale) >> levShift; 3880c1bc742181ded4930842b46e9507372f0b1b963James Dong data[3] = ((tmp1 - tmp2) * levScale) >> levShift; 3890c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp0 = data[4] + data[6]; 3900c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp1 = data[4] - data[6]; 3910c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp2 = data[5] - data[7]; 3920c1bc742181ded4930842b46e9507372f0b1b963James Dong tmp3 = data[5] + data[7]; 3930c1bc742181ded4930842b46e9507372f0b1b963James Dong data[4] = ((tmp0 + tmp3) * levScale) >> levShift; 3940c1bc742181ded4930842b46e9507372f0b1b963James Dong data[5] = ((tmp0 - tmp3) * levScale) >> levShift; 3950c1bc742181ded4930842b46e9507372f0b1b963James Dong data[6] = ((tmp1 + tmp2) * levScale) >> levShift; 3960c1bc742181ded4930842b46e9507372f0b1b963James Dong data[7] = ((tmp1 - tmp2) * levScale) >> levShift; 3970c1bc742181ded4930842b46e9507372f0b1b963James Dong 3980c1bc742181ded4930842b46e9507372f0b1b963James Dong} 3990c1bc742181ded4930842b46e9507372f0b1b963James Dong 4000c1bc742181ded4930842b46e9507372f0b1b963James Dong/*lint +e701 +e702 */ 4010c1bc742181ded4930842b46e9507372f0b1b963James Dong 4020c1bc742181ded4930842b46e9507372f0b1b963James Dong 403