| /* |
| * Copyright (c) 2004 Romain Dolbeau <romain@dolbeau.org> |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/mem.h" |
| #include "libavutil/ppc/cpu.h" |
| #include "libavutil/ppc/util_altivec.h" |
| |
| #include "libavcodec/h264dec.h" |
| #include "libavcodec/h264dsp.h" |
| |
| #if HAVE_ALTIVEC |
| |
| /**************************************************************************** |
| * IDCT transform: |
| ****************************************************************************/ |
| |
| #define VEC_1D_DCT(vb0,vb1,vb2,vb3,va0,va1,va2,va3) \ |
| /* 1st stage */ \ |
| vz0 = vec_add(vb0,vb2); /* temp[0] = Y[0] + Y[2] */ \ |
| vz1 = vec_sub(vb0,vb2); /* temp[1] = Y[0] - Y[2] */ \ |
| vz2 = vec_sra(vb1,vec_splat_u16(1)); \ |
| vz2 = vec_sub(vz2,vb3); /* temp[2] = Y[1].1/2 - Y[3] */ \ |
| vz3 = vec_sra(vb3,vec_splat_u16(1)); \ |
| vz3 = vec_add(vb1,vz3); /* temp[3] = Y[1] + Y[3].1/2 */ \ |
| /* 2nd stage: output */ \ |
| va0 = vec_add(vz0,vz3); /* x[0] = temp[0] + temp[3] */ \ |
| va1 = vec_add(vz1,vz2); /* x[1] = temp[1] + temp[2] */ \ |
| va2 = vec_sub(vz1,vz2); /* x[2] = temp[1] - temp[2] */ \ |
| va3 = vec_sub(vz0,vz3) /* x[3] = temp[0] - temp[3] */ |
| |
| #define VEC_TRANSPOSE_4(a0,a1,a2,a3,b0,b1,b2,b3) \ |
| b0 = vec_mergeh( a0, a0 ); \ |
| b1 = vec_mergeh( a1, a0 ); \ |
| b2 = vec_mergeh( a2, a0 ); \ |
| b3 = vec_mergeh( a3, a0 ); \ |
| a0 = vec_mergeh( b0, b2 ); \ |
| a1 = vec_mergel( b0, b2 ); \ |
| a2 = vec_mergeh( b1, b3 ); \ |
| a3 = vec_mergel( b1, b3 ); \ |
| b0 = vec_mergeh( a0, a2 ); \ |
| b1 = vec_mergel( a0, a2 ); \ |
| b2 = vec_mergeh( a1, a3 ); \ |
| b3 = vec_mergel( a1, a3 ) |
| |
| #if HAVE_BIGENDIAN |
| #define vdst_load(d) \ |
| vdst_orig = vec_ld(0, dst); \ |
| vdst = vec_perm(vdst_orig, zero_u8v, vdst_mask); |
| #else |
| #define vdst_load(d) vdst = vec_vsx_ld(0, dst) |
| #endif |
| |
| #define VEC_LOAD_U8_ADD_S16_STORE_U8(va) \ |
| vdst_load(); \ |
| vdst_ss = (vec_s16) VEC_MERGEH(zero_u8v, vdst); \ |
| va = vec_add(va, vdst_ss); \ |
| va_u8 = vec_packsu(va, zero_s16v); \ |
| va_u32 = vec_splat((vec_u32)va_u8, 0); \ |
| vec_ste(va_u32, element, (uint32_t*)dst); |
| |
| static void h264_idct_add_altivec(uint8_t *dst, int16_t *block, int stride) |
| { |
| vec_s16 va0, va1, va2, va3; |
| vec_s16 vz0, vz1, vz2, vz3; |
| vec_s16 vtmp0, vtmp1, vtmp2, vtmp3; |
| vec_u8 va_u8; |
| vec_u32 va_u32; |
| vec_s16 vdst_ss; |
| const vec_u16 v6us = vec_splat_u16(6); |
| vec_u8 vdst, vdst_orig; |
| vec_u8 vdst_mask = vec_lvsl(0, dst); |
| int element = ((unsigned long)dst & 0xf) >> 2; |
| LOAD_ZERO; |
| |
| block[0] += 32; /* add 32 as a DC-level for rounding */ |
| |
| vtmp0 = vec_ld(0,block); |
| vtmp1 = vec_sld(vtmp0, vtmp0, 8); |
| vtmp2 = vec_ld(16,block); |
| vtmp3 = vec_sld(vtmp2, vtmp2, 8); |
| memset(block, 0, 16 * sizeof(int16_t)); |
| |
| VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3); |
| VEC_TRANSPOSE_4(va0,va1,va2,va3,vtmp0,vtmp1,vtmp2,vtmp3); |
| VEC_1D_DCT(vtmp0,vtmp1,vtmp2,vtmp3,va0,va1,va2,va3); |
| |
| va0 = vec_sra(va0,v6us); |
| va1 = vec_sra(va1,v6us); |
| va2 = vec_sra(va2,v6us); |
| va3 = vec_sra(va3,v6us); |
| |
| VEC_LOAD_U8_ADD_S16_STORE_U8(va0); |
| dst += stride; |
| VEC_LOAD_U8_ADD_S16_STORE_U8(va1); |
| dst += stride; |
| VEC_LOAD_U8_ADD_S16_STORE_U8(va2); |
| dst += stride; |
| VEC_LOAD_U8_ADD_S16_STORE_U8(va3); |
| } |
| |
| #define IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, d0, d1, d2, d3, d4, d5, d6, d7) {\ |
| /* a0 = SRC(0) + SRC(4); */ \ |
| vec_s16 a0v = vec_add(s0, s4); \ |
| /* a2 = SRC(0) - SRC(4); */ \ |
| vec_s16 a2v = vec_sub(s0, s4); \ |
| /* a4 = (SRC(2)>>1) - SRC(6); */ \ |
| vec_s16 a4v = vec_sub(vec_sra(s2, onev), s6); \ |
| /* a6 = (SRC(6)>>1) + SRC(2); */ \ |
| vec_s16 a6v = vec_add(vec_sra(s6, onev), s2); \ |
| /* b0 = a0 + a6; */ \ |
| vec_s16 b0v = vec_add(a0v, a6v); \ |
| /* b2 = a2 + a4; */ \ |
| vec_s16 b2v = vec_add(a2v, a4v); \ |
| /* b4 = a2 - a4; */ \ |
| vec_s16 b4v = vec_sub(a2v, a4v); \ |
| /* b6 = a0 - a6; */ \ |
| vec_s16 b6v = vec_sub(a0v, a6v); \ |
| /* a1 = SRC(5) - SRC(3) - SRC(7) - (SRC(7)>>1); */ \ |
| /* a1 = (SRC(5)-SRC(3)) - (SRC(7) + (SRC(7)>>1)); */ \ |
| vec_s16 a1v = vec_sub( vec_sub(s5, s3), vec_add(s7, vec_sra(s7, onev)) ); \ |
| /* a3 = SRC(7) + SRC(1) - SRC(3) - (SRC(3)>>1); */ \ |
| /* a3 = (SRC(7)+SRC(1)) - (SRC(3) + (SRC(3)>>1)); */ \ |
| vec_s16 a3v = vec_sub( vec_add(s7, s1), vec_add(s3, vec_sra(s3, onev)) );\ |
| /* a5 = SRC(7) - SRC(1) + SRC(5) + (SRC(5)>>1); */ \ |
| /* a5 = (SRC(7)-SRC(1)) + SRC(5) + (SRC(5)>>1); */ \ |
| vec_s16 a5v = vec_add( vec_sub(s7, s1), vec_add(s5, vec_sra(s5, onev)) );\ |
| /* a7 = SRC(5)+SRC(3) + SRC(1) + (SRC(1)>>1); */ \ |
| vec_s16 a7v = vec_add( vec_add(s5, s3), vec_add(s1, vec_sra(s1, onev)) );\ |
| /* b1 = (a7>>2) + a1; */ \ |
| vec_s16 b1v = vec_add( vec_sra(a7v, twov), a1v); \ |
| /* b3 = a3 + (a5>>2); */ \ |
| vec_s16 b3v = vec_add(a3v, vec_sra(a5v, twov)); \ |
| /* b5 = (a3>>2) - a5; */ \ |
| vec_s16 b5v = vec_sub( vec_sra(a3v, twov), a5v); \ |
| /* b7 = a7 - (a1>>2); */ \ |
| vec_s16 b7v = vec_sub( a7v, vec_sra(a1v, twov)); \ |
| /* DST(0, b0 + b7); */ \ |
| d0 = vec_add(b0v, b7v); \ |
| /* DST(1, b2 + b5); */ \ |
| d1 = vec_add(b2v, b5v); \ |
| /* DST(2, b4 + b3); */ \ |
| d2 = vec_add(b4v, b3v); \ |
| /* DST(3, b6 + b1); */ \ |
| d3 = vec_add(b6v, b1v); \ |
| /* DST(4, b6 - b1); */ \ |
| d4 = vec_sub(b6v, b1v); \ |
| /* DST(5, b4 - b3); */ \ |
| d5 = vec_sub(b4v, b3v); \ |
| /* DST(6, b2 - b5); */ \ |
| d6 = vec_sub(b2v, b5v); \ |
| /* DST(7, b0 - b7); */ \ |
| d7 = vec_sub(b0v, b7v); \ |
| } |
| |
| #if HAVE_BIGENDIAN |
| #define GET_2PERM(ldv, stv, d) \ |
| ldv = vec_lvsl(0, d); \ |
| stv = vec_lvsr(8, d); |
| #define dstv_load(d) \ |
| vec_u8 hv = vec_ld( 0, d ); \ |
| vec_u8 lv = vec_ld( 7, d); \ |
| vec_u8 dstv = vec_perm( hv, lv, (vec_u8)perm_ldv ); |
| #define dest_unligned_store(d) \ |
| vec_u8 edgehv; \ |
| vec_u8 bodyv = vec_perm( idstsum8, idstsum8, perm_stv ); \ |
| vec_u8 edgelv = vec_perm( sel, zero_u8v, perm_stv ); \ |
| lv = vec_sel( lv, bodyv, edgelv ); \ |
| vec_st( lv, 7, d ); \ |
| hv = vec_ld( 0, d ); \ |
| edgehv = vec_perm( zero_u8v, sel, perm_stv ); \ |
| hv = vec_sel( hv, bodyv, edgehv ); \ |
| vec_st( hv, 0, d ); |
| #else |
| |
| #define GET_2PERM(ldv, stv, d) {} |
| #define dstv_load(d) vec_u8 dstv = vec_vsx_ld(0, d) |
| #define dest_unligned_store(d)\ |
| vec_u8 dst8 = vec_perm((vec_u8)idstsum8, dstv, vcprm(2,3,s2,s3));\ |
| vec_vsx_st(dst8, 0, d) |
| #endif /* HAVE_BIGENDIAN */ |
| |
| #define ALTIVEC_STORE_SUM_CLIP(dest, idctv, perm_ldv, perm_stv, sel) { \ |
| /* unaligned load */ \ |
| dstv_load(dest); \ |
| vec_s16 idct_sh6 = vec_sra(idctv, sixv); \ |
| vec_u16 dst16 = (vec_u16)VEC_MERGEH(zero_u8v, dstv); \ |
| vec_s16 idstsum = vec_adds(idct_sh6, (vec_s16)dst16); \ |
| vec_u8 idstsum8 = vec_packsu(zero_s16v, idstsum); \ |
| /* unaligned store */ \ |
| dest_unligned_store(dest);\ |
| } |
| |
| static void h264_idct8_add_altivec(uint8_t *dst, int16_t *dct, int stride) |
| { |
| vec_s16 s0, s1, s2, s3, s4, s5, s6, s7; |
| vec_s16 d0, d1, d2, d3, d4, d5, d6, d7; |
| vec_s16 idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7; |
| |
| vec_u8 perm_ldv, perm_stv; |
| GET_2PERM(perm_ldv, perm_stv, dst); |
| |
| const vec_u16 onev = vec_splat_u16(1); |
| const vec_u16 twov = vec_splat_u16(2); |
| const vec_u16 sixv = vec_splat_u16(6); |
| |
| const vec_u8 sel = (vec_u8) {0,0,0,0,0,0,0,0,-1,-1,-1,-1,-1,-1,-1,-1}; |
| LOAD_ZERO; |
| |
| dct[0] += 32; // rounding for the >>6 at the end |
| |
| s0 = vec_ld(0x00, (int16_t*)dct); |
| s1 = vec_ld(0x10, (int16_t*)dct); |
| s2 = vec_ld(0x20, (int16_t*)dct); |
| s3 = vec_ld(0x30, (int16_t*)dct); |
| s4 = vec_ld(0x40, (int16_t*)dct); |
| s5 = vec_ld(0x50, (int16_t*)dct); |
| s6 = vec_ld(0x60, (int16_t*)dct); |
| s7 = vec_ld(0x70, (int16_t*)dct); |
| memset(dct, 0, 64 * sizeof(int16_t)); |
| |
| IDCT8_1D_ALTIVEC(s0, s1, s2, s3, s4, s5, s6, s7, |
| d0, d1, d2, d3, d4, d5, d6, d7); |
| |
| TRANSPOSE8( d0, d1, d2, d3, d4, d5, d6, d7 ); |
| |
| IDCT8_1D_ALTIVEC(d0, d1, d2, d3, d4, d5, d6, d7, |
| idct0, idct1, idct2, idct3, idct4, idct5, idct6, idct7); |
| |
| ALTIVEC_STORE_SUM_CLIP(&dst[0*stride], idct0, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[1*stride], idct1, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[2*stride], idct2, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[3*stride], idct3, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[4*stride], idct4, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[5*stride], idct5, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[6*stride], idct6, perm_ldv, perm_stv, sel); |
| ALTIVEC_STORE_SUM_CLIP(&dst[7*stride], idct7, perm_ldv, perm_stv, sel); |
| } |
| |
| #if HAVE_BIGENDIAN |
| #define DST_LD vec_ld |
| #else |
| #define DST_LD vec_vsx_ld |
| #endif |
| static av_always_inline void h264_idct_dc_add_internal(uint8_t *dst, int16_t *block, int stride, int size) |
| { |
| vec_s16 dc16; |
| vec_u8 dcplus, dcminus, v0, v1, v2, v3, aligner; |
| vec_s32 v_dc32; |
| LOAD_ZERO; |
| DECLARE_ALIGNED(16, int, dc); |
| int i; |
| |
| dc = (block[0] + 32) >> 6; |
| block[0] = 0; |
| v_dc32 = vec_lde(0, &dc); |
| dc16 = VEC_SPLAT16((vec_s16)v_dc32, 1); |
| |
| if (size == 4) |
| dc16 = VEC_SLD16(dc16, zero_s16v, 8); |
| dcplus = vec_packsu(dc16, zero_s16v); |
| dcminus = vec_packsu(vec_sub(zero_s16v, dc16), zero_s16v); |
| |
| #if HAVE_BIGENDIAN |
| aligner = vec_lvsr(0, dst); |
| dcplus = vec_perm(dcplus, dcplus, aligner); |
| dcminus = vec_perm(dcminus, dcminus, aligner); |
| #endif |
| |
| for (i = 0; i < size; i += 4) { |
| v0 = DST_LD(0, dst+0*stride); |
| v1 = DST_LD(0, dst+1*stride); |
| v2 = DST_LD(0, dst+2*stride); |
| v3 = DST_LD(0, dst+3*stride); |
| |
| v0 = vec_adds(v0, dcplus); |
| v1 = vec_adds(v1, dcplus); |
| v2 = vec_adds(v2, dcplus); |
| v3 = vec_adds(v3, dcplus); |
| |
| v0 = vec_subs(v0, dcminus); |
| v1 = vec_subs(v1, dcminus); |
| v2 = vec_subs(v2, dcminus); |
| v3 = vec_subs(v3, dcminus); |
| |
| VEC_ST(v0, 0, dst+0*stride); |
| VEC_ST(v1, 0, dst+1*stride); |
| VEC_ST(v2, 0, dst+2*stride); |
| VEC_ST(v3, 0, dst+3*stride); |
| |
| dst += 4*stride; |
| } |
| } |
| |
| static void h264_idct_dc_add_altivec(uint8_t *dst, int16_t *block, int stride) |
| { |
| h264_idct_dc_add_internal(dst, block, stride, 4); |
| } |
| |
| static void h264_idct8_dc_add_altivec(uint8_t *dst, int16_t *block, int stride) |
| { |
| h264_idct_dc_add_internal(dst, block, stride, 8); |
| } |
| |
| static void h264_idct_add16_altivec(uint8_t *dst, const int *block_offset, |
| int16_t *block, int stride, |
| const uint8_t nnzc[15 * 8]) |
| { |
| int i; |
| for(i=0; i<16; i++){ |
| int nnz = nnzc[ scan8[i] ]; |
| if(nnz){ |
| if(nnz==1 && block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride); |
| else h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride); |
| } |
| } |
| } |
| |
| static void h264_idct_add16intra_altivec(uint8_t *dst, const int *block_offset, |
| int16_t *block, int stride, |
| const uint8_t nnzc[15 * 8]) |
| { |
| int i; |
| for(i=0; i<16; i++){ |
| if(nnzc[ scan8[i] ]) h264_idct_add_altivec(dst + block_offset[i], block + i*16, stride); |
| else if(block[i*16]) h264_idct_dc_add_altivec(dst + block_offset[i], block + i*16, stride); |
| } |
| } |
| |
| static void h264_idct8_add4_altivec(uint8_t *dst, const int *block_offset, |
| int16_t *block, int stride, |
| const uint8_t nnzc[15 * 8]) |
| { |
| int i; |
| for(i=0; i<16; i+=4){ |
| int nnz = nnzc[ scan8[i] ]; |
| if(nnz){ |
| if(nnz==1 && block[i*16]) h264_idct8_dc_add_altivec(dst + block_offset[i], block + i*16, stride); |
| else h264_idct8_add_altivec(dst + block_offset[i], block + i*16, stride); |
| } |
| } |
| } |
| |
| static void h264_idct_add8_altivec(uint8_t **dest, const int *block_offset, |
| int16_t *block, int stride, |
| const uint8_t nnzc[15 * 8]) |
| { |
| int i, j; |
| for (j = 1; j < 3; j++) { |
| for(i = j * 16; i < j * 16 + 4; i++){ |
| if(nnzc[ scan8[i] ]) |
| h264_idct_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride); |
| else if(block[i*16]) |
| h264_idct_dc_add_altivec(dest[j-1] + block_offset[i], block + i*16, stride); |
| } |
| } |
| } |
| |
| #define transpose4x16(r0, r1, r2, r3) { \ |
| register vec_u8 r4; \ |
| register vec_u8 r5; \ |
| register vec_u8 r6; \ |
| register vec_u8 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 r0, register vec_u8 r1, |
| register vec_u8 r2, register vec_u8 r3) { |
| DECLARE_ALIGNED(16, unsigned char, result)[64]; |
| uint32_t *src_int = (uint32_t *)result, *dst_int = (uint32_t *)dst; |
| int int_dst_stride = dst_stride/4; |
| |
| 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 |
| @todo FIXME: see if we can't spare some vec_lvsl() by them factorizing |
| out of unaligned_load() */ |
| #define readAndTranspose16x6(src, src_stride, r8, r9, r10, r11, r12, r13) {\ |
| register vec_u8 r0 = unaligned_load(0, src); \ |
| register vec_u8 r1 = unaligned_load( src_stride, src); \ |
| register vec_u8 r2 = unaligned_load(2* src_stride, src); \ |
| register vec_u8 r3 = unaligned_load(3* src_stride, src); \ |
| register vec_u8 r4 = unaligned_load(4* src_stride, src); \ |
| register vec_u8 r5 = unaligned_load(5* src_stride, src); \ |
| register vec_u8 r6 = unaligned_load(6* src_stride, src); \ |
| register vec_u8 r7 = unaligned_load(7* src_stride, src); \ |
| register vec_u8 r14 = unaligned_load(14*src_stride, src); \ |
| register vec_u8 r15 = unaligned_load(15*src_stride, src); \ |
| \ |
| r8 = unaligned_load( 8*src_stride, src); \ |
| r9 = unaligned_load( 9*src_stride, src); \ |
| r10 = unaligned_load(10*src_stride, src); \ |
| r11 = unaligned_load(11*src_stride, src); \ |
| r12 = unaligned_load(12*src_stride, src); \ |
| r13 = unaligned_load(13*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 diff_lt_altivec ( register vec_u8 x, |
| register vec_u8 y, |
| register vec_u8 a) { |
| |
| register vec_u8 diff = vec_subs(x, y); |
| register vec_u8 diffneg = vec_subs(y, x); |
| register vec_u8 o = vec_or(diff, diffneg); /* |x-y| */ |
| o = (vec_u8)vec_cmplt(o, a); |
| return o; |
| } |
| |
| static inline vec_u8 h264_deblock_mask ( register vec_u8 p0, |
| register vec_u8 p1, |
| register vec_u8 q0, |
| register vec_u8 q1, |
| register vec_u8 alpha, |
| register vec_u8 beta) { |
| |
| register vec_u8 mask; |
| register vec_u8 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 h264_deblock_q1(register vec_u8 p0, |
| register vec_u8 p1, |
| register vec_u8 p2, |
| register vec_u8 q0, |
| register vec_u8 tc0) { |
| |
| register vec_u8 average = vec_avg(p0, q0); |
| register vec_u8 temp; |
| register vec_u8 unclipped; |
| register vec_u8 ones; |
| register vec_u8 max; |
| register vec_u8 min; |
| register vec_u8 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 */ |
| unclipped = vec_subs(average, temp); /*(p2+((p0+q0+1)>>1))>>1 */ |
| max = vec_adds(p1, tc0); |
| min = vec_subs(p1, tc0); |
| newp1 = vec_max(min, unclipped); |
| newp1 = vec_min(max, newp1); |
| return newp1; |
| } |
| |
| #define h264_deblock_p0_q0(p0, p1, q0, q1, tc0masked) { \ |
| \ |
| const vec_u8 A0v = vec_sl(vec_splat_u8(10), vec_splat_u8(4)); \ |
| \ |
| register vec_u8 pq0bit = vec_xor(p0,q0); \ |
| register vec_u8 q1minus; \ |
| register vec_u8 p0minus; \ |
| register vec_u8 stage1; \ |
| register vec_u8 stage2; \ |
| register vec_u8 vec160; \ |
| register vec_u8 delta; \ |
| register vec_u8 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) { \ |
| DECLARE_ALIGNED(16, unsigned char, temp)[16]; \ |
| register vec_u8 alphavec; \ |
| register vec_u8 betavec; \ |
| register vec_u8 mask; \ |
| register vec_u8 p1mask; \ |
| register vec_u8 q1mask; \ |
| register vector signed char tc0vec; \ |
| register vec_u8 finaltc0; \ |
| register vec_u8 tc0masked; \ |
| register vec_u8 newp1; \ |
| register vec_u8 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 */ \ |
| \ |
| AV_COPY32(temp, 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)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)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)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; \ |
| } |
| |
| static void h264_v_loop_filter_luma_altivec(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int8_t *tc0) { |
| |
| if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) >= 0) { |
| register vec_u8 p2 = vec_ld(-3*stride, pix); |
| register vec_u8 p1 = vec_ld(-2*stride, pix); |
| register vec_u8 p0 = vec_ld(-1*stride, pix); |
| register vec_u8 q0 = vec_ld(0, pix); |
| register vec_u8 q1 = vec_ld(stride, pix); |
| register vec_u8 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); |
| } |
| } |
| |
| static void h264_h_loop_filter_luma_altivec(uint8_t *pix, ptrdiff_t stride, int alpha, int beta, int8_t *tc0) { |
| |
| register vec_u8 line0, line1, line2, line3, line4, line5; |
| if ((tc0[0] & tc0[1] & tc0[2] & tc0[3]) < 0) |
| return; |
| readAndTranspose16x6(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); |
| } |
| |
| static av_always_inline |
| void weight_h264_W_altivec(uint8_t *block, int stride, int height, |
| int log2_denom, int weight, int offset, int w) |
| { |
| int y, aligned; |
| vec_u8 vblock; |
| vec_s16 vtemp, vweight, voffset, v0, v1; |
| vec_u16 vlog2_denom; |
| DECLARE_ALIGNED(16, int32_t, temp)[4]; |
| LOAD_ZERO; |
| |
| offset <<= log2_denom; |
| if(log2_denom) offset += 1<<(log2_denom-1); |
| temp[0] = log2_denom; |
| temp[1] = weight; |
| temp[2] = offset; |
| |
| vtemp = (vec_s16)vec_ld(0, temp); |
| #if !HAVE_BIGENDIAN |
| vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3)); |
| #endif |
| vlog2_denom = (vec_u16)vec_splat(vtemp, 1); |
| vweight = vec_splat(vtemp, 3); |
| voffset = vec_splat(vtemp, 5); |
| aligned = !((unsigned long)block & 0xf); |
| |
| for (y = 0; y < height; y++) { |
| vblock = vec_ld(0, block); |
| |
| v0 = (vec_s16)VEC_MERGEH(zero_u8v, vblock); |
| v1 = (vec_s16)VEC_MERGEL(zero_u8v, vblock); |
| |
| if (w == 16 || aligned) { |
| v0 = vec_mladd(v0, vweight, zero_s16v); |
| v0 = vec_adds(v0, voffset); |
| v0 = vec_sra(v0, vlog2_denom); |
| } |
| if (w == 16 || !aligned) { |
| v1 = vec_mladd(v1, vweight, zero_s16v); |
| v1 = vec_adds(v1, voffset); |
| v1 = vec_sra(v1, vlog2_denom); |
| } |
| vblock = vec_packsu(v0, v1); |
| vec_st(vblock, 0, block); |
| |
| block += stride; |
| } |
| } |
| |
| static av_always_inline |
| void biweight_h264_W_altivec(uint8_t *dst, uint8_t *src, int stride, int height, |
| int log2_denom, int weightd, int weights, int offset, int w) |
| { |
| int y, dst_aligned, src_aligned; |
| vec_u8 vsrc, vdst; |
| vec_s16 vtemp, vweights, vweightd, voffset, v0, v1, v2, v3; |
| vec_u16 vlog2_denom; |
| DECLARE_ALIGNED(16, int32_t, temp)[4]; |
| LOAD_ZERO; |
| |
| offset = ((offset + 1) | 1) << log2_denom; |
| temp[0] = log2_denom+1; |
| temp[1] = weights; |
| temp[2] = weightd; |
| temp[3] = offset; |
| |
| vtemp = (vec_s16)vec_ld(0, temp); |
| #if !HAVE_BIGENDIAN |
| vtemp =(vec_s16)vec_perm(vtemp, vtemp, vcswapi2s(0,1,2,3)); |
| #endif |
| vlog2_denom = (vec_u16)vec_splat(vtemp, 1); |
| vweights = vec_splat(vtemp, 3); |
| vweightd = vec_splat(vtemp, 5); |
| voffset = vec_splat(vtemp, 7); |
| dst_aligned = !((unsigned long)dst & 0xf); |
| src_aligned = !((unsigned long)src & 0xf); |
| |
| for (y = 0; y < height; y++) { |
| vdst = vec_ld(0, dst); |
| vsrc = vec_ld(0, src); |
| |
| v0 = (vec_s16)VEC_MERGEH(zero_u8v, vdst); |
| v1 = (vec_s16)VEC_MERGEL(zero_u8v, vdst); |
| v2 = (vec_s16)VEC_MERGEH(zero_u8v, vsrc); |
| v3 = (vec_s16)VEC_MERGEL(zero_u8v, vsrc); |
| |
| if (w == 8) { |
| if (src_aligned) |
| v3 = v2; |
| else |
| v2 = v3; |
| } |
| |
| if (w == 16 || dst_aligned) { |
| v0 = vec_mladd(v0, vweightd, zero_s16v); |
| v2 = vec_mladd(v2, vweights, zero_s16v); |
| |
| v0 = vec_adds(v0, voffset); |
| v0 = vec_adds(v0, v2); |
| v0 = vec_sra(v0, vlog2_denom); |
| } |
| if (w == 16 || !dst_aligned) { |
| v1 = vec_mladd(v1, vweightd, zero_s16v); |
| v3 = vec_mladd(v3, vweights, zero_s16v); |
| |
| v1 = vec_adds(v1, voffset); |
| v1 = vec_adds(v1, v3); |
| v1 = vec_sra(v1, vlog2_denom); |
| } |
| vdst = vec_packsu(v0, v1); |
| vec_st(vdst, 0, dst); |
| |
| dst += stride; |
| src += stride; |
| } |
| } |
| |
| #define H264_WEIGHT(W) \ |
| static void weight_h264_pixels ## W ## _altivec(uint8_t *block, ptrdiff_t stride, int height, \ |
| int log2_denom, int weight, int offset) \ |
| { \ |
| weight_h264_W_altivec(block, stride, height, log2_denom, weight, offset, W); \ |
| }\ |
| static void biweight_h264_pixels ## W ## _altivec(uint8_t *dst, uint8_t *src, ptrdiff_t stride, int height, \ |
| int log2_denom, int weightd, int weights, int offset) \ |
| { \ |
| biweight_h264_W_altivec(dst, src, stride, height, log2_denom, weightd, weights, offset, W); \ |
| } |
| |
| H264_WEIGHT(16) |
| H264_WEIGHT( 8) |
| #endif /* HAVE_ALTIVEC */ |
| |
| av_cold void ff_h264dsp_init_ppc(H264DSPContext *c, const int bit_depth, |
| const int chroma_format_idc) |
| { |
| #if HAVE_ALTIVEC |
| if (!PPC_ALTIVEC(av_get_cpu_flags())) |
| return; |
| |
| if (bit_depth == 8) { |
| c->h264_idct_add = h264_idct_add_altivec; |
| if (chroma_format_idc <= 1) |
| c->h264_idct_add8 = h264_idct_add8_altivec; |
| c->h264_idct_add16 = h264_idct_add16_altivec; |
| c->h264_idct_add16intra = h264_idct_add16intra_altivec; |
| c->h264_idct_dc_add= h264_idct_dc_add_altivec; |
| c->h264_idct8_dc_add = h264_idct8_dc_add_altivec; |
| c->h264_idct8_add = h264_idct8_add_altivec; |
| c->h264_idct8_add4 = h264_idct8_add4_altivec; |
| c->h264_v_loop_filter_luma= h264_v_loop_filter_luma_altivec; |
| c->h264_h_loop_filter_luma= h264_h_loop_filter_luma_altivec; |
| |
| c->weight_h264_pixels_tab[0] = weight_h264_pixels16_altivec; |
| c->weight_h264_pixels_tab[1] = weight_h264_pixels8_altivec; |
| c->biweight_h264_pixels_tab[0] = biweight_h264_pixels16_altivec; |
| c->biweight_h264_pixels_tab[1] = biweight_h264_pixels8_altivec; |
| } |
| #endif /* HAVE_ALTIVEC */ |
| } |
