/***************************************************************************** * deblock.c: ppc deblocking ***************************************************************************** * Copyright (C) 2007-2022 x264 project * * Authors: Guillaume Poirier * * 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. * * This program is also available under a commercial proprietary license. * For more information, contact us at licensing@x264.com. *****************************************************************************/ #include "common/common.h" #include "ppccommon.h" #include "deblock.h" #if !HIGH_BIT_DEPTH #define transpose4x16(r0, r1, r2, r3) \ { \ register vec_u8_t r4; \ register vec_u8_t r5; \ register vec_u8_t r6; \ register vec_u8_t r7; \ \ r4 = vec_mergeh(r0, r2); /*0, 2 set 0*/ \ r5 = vec_mergel(r0, r2); /*0, 2 set 1*/ \ r6 = vec_mergeh(r1, r3); /*1, 3 set 0*/ \ r7 = vec_mergel(r1, r3); /*1, 3 set 1*/ \ \ r0 = vec_mergeh(r4, r6); /*all set 0*/ \ r1 = vec_mergel(r4, r6); /*all set 1*/ \ r2 = vec_mergeh(r5, r7); /*all set 2*/ \ r3 = vec_mergel(r5, r7); /*all set 3*/ \ } static inline void write16x4( uint8_t *dst, int dst_stride, register vec_u8_t r0, register vec_u8_t r1, register vec_u8_t r2, register vec_u8_t r3 ) { ALIGNED_16(unsigned char result[64]); uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst; int int_dst_stride = dst_stride >> 2; vec_st(r0, 0, result); vec_st(r1, 16, result); vec_st(r2, 32, result); vec_st(r3, 48, result); /* FIXME: there has to be a better way!!!! */ *dst_int = *src_int; *(dst_int+ int_dst_stride) = *(src_int + 1); *(dst_int+ 2*int_dst_stride) = *(src_int + 2); *(dst_int+ 3*int_dst_stride) = *(src_int + 3); *(dst_int+ 4*int_dst_stride) = *(src_int + 4); *(dst_int+ 5*int_dst_stride) = *(src_int + 5); *(dst_int+ 6*int_dst_stride) = *(src_int + 6); *(dst_int+ 7*int_dst_stride) = *(src_int + 7); *(dst_int+ 8*int_dst_stride) = *(src_int + 8); *(dst_int+ 9*int_dst_stride) = *(src_int + 9); *(dst_int+10*int_dst_stride) = *(src_int + 10); *(dst_int+11*int_dst_stride) = *(src_int + 11); *(dst_int+12*int_dst_stride) = *(src_int + 12); *(dst_int+13*int_dst_stride) = *(src_int + 13); *(dst_int+14*int_dst_stride) = *(src_int + 14); *(dst_int+15*int_dst_stride) = *(src_int + 15); } /** \brief performs a 6x16 transpose of data in src, and stores it to dst */ #define read_and_transpose16x6(src, src_stride, r8, r9, r10, r11, r12, r13)\ {\ register vec_u8_t r0, r1, r2, r3, r4, r5, r6, r7, r14, r15;\ r0 = vec_vsx_ld(0, src); \ r1 = vec_vsx_ld(src_stride, src); \ r2 = vec_vsx_ld(2*src_stride, src); \ r3 = vec_vsx_ld(3*src_stride, src); \ r4 = vec_vsx_ld(4*src_stride, src); \ r5 = vec_vsx_ld(5*src_stride, src); \ r6 = vec_vsx_ld(6*src_stride, src); \ r7 = vec_vsx_ld(7*src_stride, src); \ r8 = vec_vsx_ld(8*src_stride, src); \ r9 = vec_vsx_ld(9*src_stride, src); \ r10 = vec_vsx_ld(10*src_stride, src); \ r11 = vec_vsx_ld(11*src_stride, src); \ r12 = vec_vsx_ld(12*src_stride, src); \ r13 = vec_vsx_ld(13*src_stride, src); \ r14 = vec_vsx_ld(14*src_stride, src); \ r15 = vec_vsx_ld(15*src_stride, src); \ \ /*Merge first pairs*/ \ r0 = vec_mergeh(r0, r8); /*0, 8*/ \ r1 = vec_mergeh(r1, r9); /*1, 9*/ \ r2 = vec_mergeh(r2, r10); /*2,10*/ \ r3 = vec_mergeh(r3, r11); /*3,11*/ \ r4 = vec_mergeh(r4, r12); /*4,12*/ \ r5 = vec_mergeh(r5, r13); /*5,13*/ \ r6 = vec_mergeh(r6, r14); /*6,14*/ \ r7 = vec_mergeh(r7, r15); /*7,15*/ \ \ /*Merge second pairs*/ \ r8 = vec_mergeh(r0, r4); /*0,4, 8,12 set 0*/ \ r9 = vec_mergel(r0, r4); /*0,4, 8,12 set 1*/ \ r10 = vec_mergeh(r1, r5); /*1,5, 9,13 set 0*/ \ r11 = vec_mergel(r1, r5); /*1,5, 9,13 set 1*/ \ r12 = vec_mergeh(r2, r6); /*2,6,10,14 set 0*/ \ r13 = vec_mergel(r2, r6); /*2,6,10,14 set 1*/ \ r14 = vec_mergeh(r3, r7); /*3,7,11,15 set 0*/ \ r15 = vec_mergel(r3, r7); /*3,7,11,15 set 1*/ \ \ /*Third merge*/ \ r0 = vec_mergeh(r8, r12); /*0,2,4,6,8,10,12,14 set 0*/ \ r1 = vec_mergel(r8, r12); /*0,2,4,6,8,10,12,14 set 1*/ \ r2 = vec_mergeh(r9, r13); /*0,2,4,6,8,10,12,14 set 2*/ \ r4 = vec_mergeh(r10, r14); /*1,3,5,7,9,11,13,15 set 0*/ \ r5 = vec_mergel(r10, r14); /*1,3,5,7,9,11,13,15 set 1*/ \ r6 = vec_mergeh(r11, r15); /*1,3,5,7,9,11,13,15 set 2*/ \ /* Don't need to compute 3 and 7*/ \ \ /*Final merge*/ \ r8 = vec_mergeh(r0, r4); /*all set 0*/ \ r9 = vec_mergel(r0, r4); /*all set 1*/ \ r10 = vec_mergeh(r1, r5); /*all set 2*/ \ r11 = vec_mergel(r1, r5); /*all set 3*/ \ r12 = vec_mergeh(r2, r6); /*all set 4*/ \ r13 = vec_mergel(r2, r6); /*all set 5*/ \ /* Don't need to compute 14 and 15*/ \ \ } // out: o = |x-y| < a static inline vec_u8_t diff_lt_altivec( register vec_u8_t x, register vec_u8_t y, register vec_u8_t a ) { return (vec_u8_t)vec_cmplt(vec_absd(x, y), a); } static inline vec_u8_t h264_deblock_mask( register vec_u8_t p0, register vec_u8_t p1, register vec_u8_t q0, register vec_u8_t q1, register vec_u8_t alpha, register vec_u8_t beta ) { register vec_u8_t mask; register vec_u8_t tempmask; mask = diff_lt_altivec(p0, q0, alpha); tempmask = diff_lt_altivec(p1, p0, beta); mask = vec_and(mask, tempmask); tempmask = diff_lt_altivec(q1, q0, beta); mask = vec_and(mask, tempmask); return mask; } // out: newp1 = clip((p2 + ((p0 + q0 + 1) >> 1)) >> 1, p1-tc0, p1+tc0) static inline vec_u8_t h264_deblock_q1( register vec_u8_t p0, register vec_u8_t p1, register vec_u8_t p2, register vec_u8_t q0, register vec_u8_t tc0 ) { register vec_u8_t average = vec_avg(p0, q0); register vec_u8_t temp; register vec_u8_t uncliped; register vec_u8_t ones; register vec_u8_t max; register vec_u8_t min; register vec_u8_t newp1; temp = vec_xor(average, p2); average = vec_avg(average, p2); /*avg(p2, avg(p0, q0)) */ ones = vec_splat_u8(1); temp = vec_and(temp, ones); /*(p2^avg(p0, q0)) & 1 */ uncliped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */ max = vec_adds(p1, tc0); min = vec_subs(p1, tc0); newp1 = vec_max(min, uncliped); newp1 = vec_min(max, newp1); return newp1; } #define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) \ { \ const vec_u8_t A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4)); \ \ register vec_u8_t pq0bit = vec_xor(p0,q0); \ register vec_u8_t q1minus; \ register vec_u8_t p0minus; \ register vec_u8_t stage1; \ register vec_u8_t stage2; \ register vec_u8_t vec160; \ register vec_u8_t delta; \ register vec_u8_t deltaneg; \ \ q1minus = vec_nor(q1, q1); /* 255 - q1 */ \ stage1 = vec_avg(p1, q1minus); /* (p1 - q1 + 256)>>1 */ \ stage2 = vec_sr(stage1, vec_splat_u8(1)); /* (p1 - q1 + 256)>>2 = 64 + (p1 - q1) >> 2 */ \ p0minus = vec_nor(p0, p0); /* 255 - p0 */ \ stage1 = vec_avg(q0, p0minus); /* (q0 - p0 + 256)>>1 */ \ pq0bit = vec_and(pq0bit, vec_splat_u8(1)); \ stage2 = vec_avg(stage2, pq0bit); /* 32 + ((q0 - p0)&1 + (p1 - q1) >> 2 + 1) >> 1 */\ stage2 = vec_adds(stage2, stage1); /* 160 + ((p0 - q0) + (p1 - q1) >> 2 + 1) >> 1 */ \ vec160 = vec_ld(0, &A0v); \ deltaneg = vec_subs(vec160, stage2); /* -d */ \ delta = vec_subs(stage2, vec160); /* d */ \ deltaneg = vec_min(tc0masked, deltaneg); \ delta = vec_min(tc0masked, delta); \ p0 = vec_subs(p0, deltaneg); \ q0 = vec_subs(q0, delta); \ p0 = vec_adds(p0, delta); \ q0 = vec_adds(q0, deltaneg); \ } #define h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0) \ { \ ALIGNED_16(unsigned char temp[16]); \ register vec_u8_t alphavec; \ register vec_u8_t betavec; \ register vec_u8_t mask; \ register vec_u8_t p1mask; \ register vec_u8_t q1mask; \ register vec_s8_t tc0vec; \ register vec_u8_t finaltc0; \ register vec_u8_t tc0masked; \ register vec_u8_t newp1; \ register vec_u8_t newq1; \ \ temp[0] = alpha; \ temp[1] = beta; \ alphavec = vec_ld(0, temp); \ betavec = vec_splat(alphavec, 0x1); \ alphavec = vec_splat(alphavec, 0x0); \ mask = h264_deblock_mask(p0, p1, q0, q1, alphavec, betavec); /*if in block */ \ \ M32( temp ) = M32( tc0 ); \ tc0vec = vec_ld(0, (signed char*)temp); \ tc0vec = vec_mergeh(tc0vec, tc0vec); \ tc0vec = vec_mergeh(tc0vec, tc0vec); \ mask = vec_and(mask, vec_cmpgt(tc0vec, vec_splat_s8(-1))); /* if tc0[i] >= 0 */ \ finaltc0 = vec_and((vec_u8_t)tc0vec, mask); /* tc = tc0 */ \ \ p1mask = diff_lt_altivec(p2, p0, betavec); \ p1mask = vec_and(p1mask, mask); /* if( |p2 - p0| < beta ) */ \ tc0masked = vec_and(p1mask, (vec_u8_t)tc0vec); \ finaltc0 = vec_sub(finaltc0, p1mask); /* tc++ */ \ newp1 = h264_deblock_q1(p0, p1, p2, q0, tc0masked); \ /*end if*/ \ \ q1mask = diff_lt_altivec(q2, q0, betavec); \ q1mask = vec_and(q1mask, mask); /* if( |q2 - q0| < beta ) */ \ tc0masked = vec_and(q1mask, (vec_u8_t)tc0vec); \ finaltc0 = vec_sub(finaltc0, q1mask); /* tc++ */ \ newq1 = h264_deblock_q1(p0, q1, q2, q0, tc0masked); \ /*end if*/ \ \ h264_deblock_p0_q0(p0, p1, q0, q1, finaltc0); \ p1 = newp1; \ q1 = newq1; \ } void x264_deblock_v_luma_altivec( uint8_t *pix, intptr_t stride, int alpha, int beta, int8_t *tc0 ) { if( (tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0 ) { register vec_u8_t p2 = vec_ld(-3*stride, pix); register vec_u8_t p1 = vec_ld(-2*stride, pix); register vec_u8_t p0 = vec_ld(-1*stride, pix); register vec_u8_t q0 = vec_ld(0, pix); register vec_u8_t q1 = vec_ld(stride, pix); register vec_u8_t q2 = vec_ld(2*stride, pix); h264_loop_filter_luma_altivec(p2, p1, p0, q0, q1, q2, alpha, beta, tc0); vec_st(p1, -2*stride, pix); vec_st(p0, -1*stride, pix); vec_st(q0, 0, pix); vec_st(q1, stride, pix); } } void x264_deblock_h_luma_altivec( uint8_t *pix, intptr_t stride, int alpha, int beta, int8_t *tc0 ) { register vec_u8_t line0, line1, line2, line3, line4, line5; if( (tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0 ) return; read_and_transpose16x6(pix-3, stride, line0, line1, line2, line3, line4, line5); h264_loop_filter_luma_altivec(line0, line1, line2, line3, line4, line5, alpha, beta, tc0); transpose4x16(line1, line2, line3, line4); write16x4(pix-2, stride, line1, line2, line3, line4); } #endif // !HIGH_BIT_DEPTH