quant.c
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上传日期:2021-12-09
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文件大小:13k
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Audio
开发平台:
Visual C++
- /*****************************************************************************
- * quant.c: h264 encoder
- *****************************************************************************
- * Copyright (C) 2007 Guillaume Poirier <gpoirier@mplayerhq.hu>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
- *****************************************************************************/
- #if defined SYS_LINUX
- #include <altivec.h>
- #endif
- #include "common/common.h"
- #include "ppccommon.h"
- #include "quant.h"
- // quant of a whole 4x4 block, unrolled 2x and "pre-scheduled"
- #define QUANT_16_U( idx0, idx1 )
- temp1v = vec_ld((idx0), *dct);
- temp2v = vec_ld((idx1), *dct);
- mfvA = vec_ld((idx0), mf);
- mfvB = vec_ld((idx1), mf);
- biasvA = vec_ld((idx0), bias);
- biasvB = vec_ld((idx1), bias);
- mskA = vec_cmplt(temp1v, zerov);
- mskB = vec_cmplt(temp2v, zerov);
- coefvA = (vec_u16_t)vec_max(vec_sub(zerov, temp1v), temp1v);
- coefvB = (vec_u16_t)vec_max(vec_sub(zerov, temp2v), temp2v);
- coefvA = vec_adds(coefvA, biasvA);
- coefvB = vec_adds(coefvB, biasvB);
- multEvenvA = vec_mule(coefvA, mfvA);
- multOddvA = vec_mulo(coefvA, mfvA);
- multEvenvB = vec_mule(coefvB, mfvB);
- multOddvB = vec_mulo(coefvB, mfvB);
- multEvenvA = vec_sr(multEvenvA, i_qbitsv);
- multOddvA = vec_sr(multOddvA, i_qbitsv);
- multEvenvB = vec_sr(multEvenvB, i_qbitsv);
- multOddvB = vec_sr(multOddvB, i_qbitsv);
- temp1v = (vec_s16_t) vec_packs(vec_mergeh(multEvenvA, multOddvA), vec_mergel(multEvenvA, multOddvA));
- temp2v = (vec_s16_t) vec_packs(vec_mergeh(multEvenvB, multOddvB), vec_mergel(multEvenvB, multOddvB));
- temp1v = vec_xor(temp1v, mskA);
- temp2v = vec_xor(temp2v, mskB);
- temp1v = vec_adds(temp1v, vec_and(mskA, one));
- vec_st(temp1v, (idx0), (int16_t*)dct);
- temp2v = vec_adds(temp2v, vec_and(mskB, one));
- vec_st(temp2v, (idx1), (int16_t*)dct);
- void x264_quant_4x4_altivec( int16_t dct[4][4], uint16_t mf[16], uint16_t bias[16] )
- {
- vector bool short mskA;
- vec_u32_t i_qbitsv;
- vec_u16_t coefvA;
- vec_u32_t multEvenvA, multOddvA;
- vec_u16_t mfvA;
- vec_u16_t biasvA;
- vec_s16_t zerov, one;
- vector bool short mskB;
- vec_u16_t coefvB;
- vec_u32_t multEvenvB, multOddvB;
- vec_u16_t mfvB;
- vec_u16_t biasvB;
- vec_s16_t temp1v, temp2v;
- vect_int_u qbits_u;
- qbits_u.s[0]=16;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- zerov = vec_splat_s16(0);
- one = vec_splat_s16(1);
- QUANT_16_U( 0, 16 );
- }
- // DC quant of a whole 4x4 block, unrolled 2x and "pre-scheduled"
- #define QUANT_16_U_DC( idx0, idx1 )
- temp1v = vec_ld((idx0), *dct);
- temp2v = vec_ld((idx1), *dct);
- mskA = vec_cmplt(temp1v, zerov);
- mskB = vec_cmplt(temp2v, zerov);
- coefvA = (vec_u16_t) vec_max(vec_sub(zerov, temp1v), temp1v);
- coefvB = (vec_u16_t) vec_max(vec_sub(zerov, temp2v), temp2v);
- coefvA = vec_add(coefvA, biasv);
- coefvB = vec_add(coefvB, biasv);
- multEvenvA = vec_mule(coefvA, mfv);
- multOddvA = vec_mulo(coefvA, mfv);
- multEvenvB = vec_mule(coefvB, mfv);
- multOddvB = vec_mulo(coefvB, mfv);
- multEvenvA = vec_sr(multEvenvA, i_qbitsv);
- multOddvA = vec_sr(multOddvA, i_qbitsv);
- multEvenvB = vec_sr(multEvenvB, i_qbitsv);
- multOddvB = vec_sr(multOddvB, i_qbitsv);
- temp1v = (vec_s16_t) vec_packs(vec_mergeh(multEvenvA, multOddvA), vec_mergel(multEvenvA, multOddvA));
- temp2v = (vec_s16_t) vec_packs(vec_mergeh(multEvenvB, multOddvB), vec_mergel(multEvenvB, multOddvB));
- temp1v = vec_xor(temp1v, mskA);
- temp2v = vec_xor(temp2v, mskB);
- temp1v = vec_add(temp1v, vec_and(mskA, one));
- vec_st(temp1v, (idx0), (int16_t*)dct);
- temp2v = vec_add(temp2v, vec_and(mskB, one));
- vec_st(temp2v, (idx1), (int16_t*)dct);
- void x264_quant_4x4_dc_altivec( int16_t dct[4][4], int mf, int bias )
- {
- vector bool short mskA;
- vec_u32_t i_qbitsv;
- vec_u16_t coefvA;
- vec_u32_t multEvenvA, multOddvA;
- vec_s16_t zerov, one;
- vector bool short mskB;
- vec_u16_t coefvB;
- vec_u32_t multEvenvB, multOddvB;
- vec_s16_t temp1v, temp2v;
- vec_u16_t mfv;
- vec_u16_t biasv;
- vect_ushort_u mf_u;
- mf_u.s[0]=mf;
- mfv = vec_splat( mf_u.v, 0 );
- vect_int_u qbits_u;
- qbits_u.s[0]=16;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- vect_ushort_u bias_u;
- bias_u.s[0]=bias;
- biasv = vec_splat(bias_u.v, 0);
- zerov = vec_splat_s16(0);
- one = vec_splat_s16(1);
- QUANT_16_U_DC( 0, 16 );
- }
- // DC quant of a whole 2x2 block
- #define QUANT_4_U_DC( idx0 )
- const vec_u16_t sel = (vec_u16_t) CV(-1,-1,-1,-1,0,0,0,0);
- temp1v = vec_ld((idx0), *dct);
- mskA = vec_cmplt(temp1v, zerov);
- coefvA = (vec_u16_t) vec_max(vec_sub(zerov, temp1v), temp1v);
- coefvA = vec_add(coefvA, biasv);
- multEvenvA = vec_mule(coefvA, mfv);
- multOddvA = vec_mulo(coefvA, mfv);
- multEvenvA = vec_sr(multEvenvA, i_qbitsv);
- multOddvA = vec_sr(multOddvA, i_qbitsv);
- temp2v = (vec_s16_t) vec_packs(vec_mergeh(multEvenvA, multOddvA), vec_mergel(multEvenvA, multOddvA));
- temp2v = vec_xor(temp2v, mskA);
- temp2v = vec_add(temp2v, vec_and(mskA, one));
- temp1v = vec_sel(temp1v, temp2v, sel);
- vec_st(temp1v, (idx0), (int16_t*)dct);
- void x264_quant_2x2_dc_altivec( int16_t dct[2][2], int mf, int bias )
- {
- vector bool short mskA;
- vec_u32_t i_qbitsv;
- vec_u16_t coefvA;
- vec_u32_t multEvenvA, multOddvA;
- vec_s16_t zerov, one;
- vec_s16_t temp1v, temp2v;
- vec_u16_t mfv;
- vec_u16_t biasv;
- vect_ushort_u mf_u;
- mf_u.s[0]=mf;
- mfv = vec_splat( mf_u.v, 0 );
- vect_int_u qbits_u;
- qbits_u.s[0]=16;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- vect_ushort_u bias_u;
- bias_u.s[0]=bias;
- biasv = vec_splat(bias_u.v, 0);
- zerov = vec_splat_s16(0);
- one = vec_splat_s16(1);
- QUANT_4_U_DC(0);
- }
- void x264_quant_8x8_altivec( int16_t dct[8][8], uint16_t mf[64], uint16_t bias[64] )
- {
- vector bool short mskA;
- vec_u32_t i_qbitsv;
- vec_u16_t coefvA;
- vec_u32_t multEvenvA, multOddvA;
- vec_u16_t mfvA;
- vec_u16_t biasvA;
- vec_s16_t zerov, one;
- vector bool short mskB;
- vec_u16_t coefvB;
- vec_u32_t multEvenvB, multOddvB;
- vec_u16_t mfvB;
- vec_u16_t biasvB;
- vec_s16_t temp1v, temp2v;
- vect_int_u qbits_u;
- qbits_u.s[0]=16;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- zerov = vec_splat_s16(0);
- one = vec_splat_s16(1);
- int i;
- for ( i=0; i<4; i++ ) {
- QUANT_16_U( i*2*16, i*2*16+16 );
- }
- }
- #define DEQUANT_SHL()
- {
- dctv = vec_ld(0, dct[y]);
- mf1v = vec_ld(0, dequant_mf[i_mf][y]);
- mf2v = vec_ld(16, dequant_mf[i_mf][y]);
- mfv = vec_packs(mf1v, mf2v);
- multEvenvA = vec_mule(dctv, mfv);
- multOddvA = vec_mulo(dctv, mfv);
- dctv = (vec_s16_t) vec_packs(vec_mergeh(multEvenvA, multOddvA),
- vec_mergel(multEvenvA, multOddvA));
- dctv = vec_sl(dctv, i_qbitsv);
- vec_st(dctv, 0, dct[y]);
- }
- #define DEQUANT_SHR()
- {
- dctv = vec_ld(0, dct[y]);
- dct1v = vec_mergeh(dctv, dctv);
- dct2v = vec_mergel(dctv, dctv);
- mf1v = vec_ld(0, dequant_mf[i_mf][y]);
- mf2v = vec_ld(16, dequant_mf[i_mf][y]);
- multEvenvA = vec_mule(dct1v, (vec_s16_t)mf1v);
- multOddvA = vec_mulo(dct1v, (vec_s16_t)mf1v);
- temp1v = vec_add(vec_sl(multEvenvA, sixteenv), multOddvA);
- temp1v = vec_add(temp1v, fv);
- temp1v = vec_sra(temp1v, i_qbitsv);
- multEvenvA = vec_mule(dct2v, (vec_s16_t)mf2v);
- multOddvA = vec_mulo(dct2v, (vec_s16_t)mf2v);
- temp2v = vec_add(vec_sl(multEvenvA, sixteenv), multOddvA);
- temp2v = vec_add(temp2v, fv);
- temp2v = vec_sra(temp2v, i_qbitsv);
- dctv = (vec_s16_t)vec_packs(temp1v, temp2v);
- vec_st(dctv, 0, dct[y]);
- }
- void x264_dequant_4x4_altivec( int16_t dct[4][4], int dequant_mf[6][4][4], int i_qp )
- {
- const int i_mf = i_qp%6;
- const int i_qbits = i_qp/6 - 4;
- int y;
- vec_s16_t dctv;
- vec_s16_t dct1v, dct2v;
- vec_s32_t mf1v, mf2v;
- vec_s16_t mfv;
- vec_s32_t multEvenvA, multOddvA;
- vec_s32_t temp1v, temp2v;
- if( i_qbits >= 0 )
- {
- vec_u16_t i_qbitsv;
- vect_ushort_u qbits_u;
- qbits_u.s[0]=i_qbits;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- for( y = 0; y < 4; y+=2 )
- DEQUANT_SHL();
- }
- else
- {
- const int f = 1 << (-i_qbits-1);
- vec_s32_t fv;
- vect_int_u f_u;
- f_u.s[0]=f;
- fv = (vec_s32_t)vec_splat(f_u.v, 0);
- vec_u32_t i_qbitsv;
- vect_int_u qbits_u;
- qbits_u.s[0]=-i_qbits;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- vec_u32_t sixteenv;
- vect_int_u sixteen_u;
- sixteen_u.s[0]=16;
- sixteenv = vec_splat(sixteen_u.v, 0);
- for( y = 0; y < 4; y+=2 )
- DEQUANT_SHR();
- }
- }
- void x264_dequant_8x8_altivec( int16_t dct[8][8], int dequant_mf[6][8][8], int i_qp )
- {
- const int i_mf = i_qp%6;
- const int i_qbits = i_qp/6 - 6;
- int y;
- vec_s16_t dctv;
- vec_s16_t dct1v, dct2v;
- vec_s32_t mf1v, mf2v;
- vec_s16_t mfv;
- vec_s32_t multEvenvA, multOddvA;
- vec_s32_t temp1v, temp2v;
- if( i_qbits >= 0 )
- {
- vec_u16_t i_qbitsv;
- vect_ushort_u qbits_u;
- qbits_u.s[0]=i_qbits;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- for( y = 0; y < 8; y++ )
- DEQUANT_SHL();
- }
- else
- {
- const int f = 1 << (-i_qbits-1);
- vec_s32_t fv;
- vect_int_u f_u;
- f_u.s[0]=f;
- fv = (vec_s32_t)vec_splat(f_u.v, 0);
- vec_u32_t i_qbitsv;
- vect_int_u qbits_u;
- qbits_u.s[0]=-i_qbits;
- i_qbitsv = vec_splat(qbits_u.v, 0);
- vec_u32_t sixteenv;
- vect_int_u sixteen_u;
- sixteen_u.s[0]=16;
- sixteenv = vec_splat(sixteen_u.v, 0);
- for( y = 0; y < 8; y++ )
- DEQUANT_SHR();
- }
- }