/* * MMX optimized forward DCT * The gcc porting is Copyright (c) 2001 Fabrice Bellard. * cleanup/optimizations are Copyright (c) 2002-2004 Michael Niedermayer * SSE2 optimization is Copyright (c) 2004 Denes Balatoni. * * from fdctam32.c - AP922 MMX(3D-Now) forward-DCT * * Intel Application Note AP-922 - fast, precise implementation of DCT * http://developer.intel.com/vtune/cbts/appnotes.htm * * Also of inspiration: * a page about fdct at http://www.geocities.com/ssavekar/dct.htm * Skal's fdct at http://skal.planet-d.net/coding/dct.html * * 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 "common.h" #include "../dsputil.h" #include "mmx.h" #define ATTR_ALIGN(align) __attribute__ ((__aligned__ (align))) ////////////////////////////////////////////////////////////////////// // // constants for the forward DCT // ----------------------------- // // Be sure to check that your compiler is aligning all constants to QWORD // (8-byte) memory boundaries! Otherwise the unaligned memory access will // severely stall MMX execution. // ////////////////////////////////////////////////////////////////////// #define BITS_FRW_ACC 3 //; 2 or 3 for accuracy #define SHIFT_FRW_COL BITS_FRW_ACC #define SHIFT_FRW_ROW (BITS_FRW_ACC + 17 - 3) #define RND_FRW_ROW (1 << (SHIFT_FRW_ROW-1)) //#define RND_FRW_COL (1 << (SHIFT_FRW_COL-1)) //concatenated table, for forward DCT transformation static const int16_t fdct_tg_all_16[] ATTR_ALIGN(8) = { 13036, 13036, 13036, 13036, // tg * (2<<16) + 0.5 27146, 27146, 27146, 27146, // tg * (2<<16) + 0.5 -21746, -21746, -21746, -21746, // tg * (2<<16) + 0.5 }; static const int16_t ocos_4_16[4] ATTR_ALIGN(8) = { 23170, 23170, 23170, 23170, //cos * (2<<15) + 0.5 }; static const int64_t fdct_one_corr ATTR_ALIGN(8) = 0x0001000100010001LL; static const int32_t fdct_r_row[2] ATTR_ALIGN(8) = {RND_FRW_ROW, RND_FRW_ROW }; static struct { const int32_t fdct_r_row_sse2[4] ATTR_ALIGN(16); } fdct_r_row_sse2 ATTR_ALIGN(16)= {{ RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW }}; //static const long fdct_r_row_sse2[4] ATTR_ALIGN(16) = {RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW, RND_FRW_ROW}; static const int16_t tab_frw_01234567[] ATTR_ALIGN(8) = { // forward_dct coeff table 16384, 16384, 22725, 19266, 16384, 16384, 12873, 4520, 21407, 8867, 19266, -4520, -8867, -21407, -22725, -12873, 16384, -16384, 12873, -22725, -16384, 16384, 4520, 19266, 8867, -21407, 4520, -12873, 21407, -8867, 19266, -22725, 22725, 22725, 31521, 26722, 22725, 22725, 17855, 6270, 29692, 12299, 26722, -6270, -12299, -29692, -31521, -17855, 22725, -22725, 17855, -31521, -22725, 22725, 6270, 26722, 12299, -29692, 6270, -17855, 29692, -12299, 26722, -31521, 21407, 21407, 29692, 25172, 21407, 21407, 16819, 5906, 27969, 11585, 25172, -5906, -11585, -27969, -29692, -16819, 21407, -21407, 16819, -29692, -21407, 21407, 5906, 25172, 11585, -27969, 5906, -16819, 27969, -11585, 25172, -29692, 19266, 19266, 26722, 22654, 19266, 19266, 15137, 5315, 25172, 10426, 22654, -5315, -10426, -25172, -26722, -15137, 19266, -19266, 15137, -26722, -19266, 19266, 5315, 22654, 10426, -25172, 5315, -15137, 25172, -10426, 22654, -26722, 16384, 16384, 22725, 19266, 16384, 16384, 12873, 4520, 21407, 8867, 19266, -4520, -8867, -21407, -22725, -12873, 16384, -16384, 12873, -22725, -16384, 16384, 4520, 19266, 8867, -21407, 4520, -12873, 21407, -8867, 19266, -22725, 19266, 19266, 26722, 22654, 19266, 19266, 15137, 5315, 25172, 10426, 22654, -5315, -10426, -25172, -26722, -15137, 19266, -19266, 15137, -26722, -19266, 19266, 5315, 22654, 10426, -25172, 5315, -15137, 25172, -10426, 22654, -26722, 21407, 21407, 29692, 25172, 21407, 21407, 16819, 5906, 27969, 11585, 25172, -5906, -11585, -27969, -29692, -16819, 21407, -21407, 16819, -29692, -21407, 21407, 5906, 25172, 11585, -27969, 5906, -16819, 27969, -11585, 25172, -29692, 22725, 22725, 31521, 26722, 22725, 22725, 17855, 6270, 29692, 12299, 26722, -6270, -12299, -29692, -31521, -17855, 22725, -22725, 17855, -31521, -22725, 22725, 6270, 26722, 12299, -29692, 6270, -17855, 29692, -12299, 26722, -31521, }; static struct { const int16_t tab_frw_01234567_sse2[256] ATTR_ALIGN(16); } tab_frw_01234567_sse2 ATTR_ALIGN(16) = {{ //static const int16_t tab_frw_01234567_sse2[] ATTR_ALIGN(16) = { // forward_dct coeff table #define TABLE_SSE2 C4, C4, C1, C3, -C6, -C2, -C1, -C5, \ C4, C4, C5, C7, C2, C6, C3, -C7, \ -C4, C4, C7, C3, C6, -C2, C7, -C5, \ C4, -C4, C5, -C1, C2, -C6, C3, -C1, // c1..c7 * cos(pi/4) * 2^15 #define C1 22725 #define C2 21407 #define C3 19266 #define C4 16384 #define C5 12873 #define C6 8867 #define C7 4520 TABLE_SSE2 #undef C1 #undef C2 #undef C3 #undef C4 #undef C5 #undef C6 #undef C7 #define C1 31521 #define C2 29692 #define C3 26722 #define C4 22725 #define C5 17855 #define C6 12299 #define C7 6270 TABLE_SSE2 #undef C1 #undef C2 #undef C3 #undef C4 #undef C5 #undef C6 #undef C7 #define C1 29692 #define C2 27969 #define C3 25172 #define C4 21407 #define C5 16819 #define C6 11585 #define C7 5906 TABLE_SSE2 #undef C1 #undef C2 #undef C3 #undef C4 #undef C5 #undef C6 #undef C7 #define C1 26722 #define C2 25172 #define C3 22654 #define C4 19266 #define C5 15137 #define C6 10426 #define C7 5315 TABLE_SSE2 #undef C1 #undef C2 #undef C3 #undef C4 #undef C5 #undef C6 #undef C7 #define C1 22725 #define C2 21407 #define C3 19266 #define C4 16384 #define C5 12873 #define C6 8867 #define C7 4520 TABLE_SSE2 #undef C1 #undef C2 #undef C3 #undef C4 #undef C5 #undef C6 #undef C7 #define C1 26722 #define C2 25172 #define C3 22654 #define C4 19266 #define C5 15137 #define C6 10426 #define C7 5315 TABLE_SSE2 #undef C1 #undef C2 #undef C3 #undef C4 #undef C5 #undef C6 #undef C7 #define C1 29692 #define C2 27969 #define C3 25172 #define C4 21407 #define C5 16819 #define C6 11585 #define C7 5906 TABLE_SSE2 #undef C1 #undef C2 #undef C3 #undef C4 #undef C5 #undef C6 #undef C7 #define C1 31521 #define C2 29692 #define C3 26722 #define C4 22725 #define C5 17855 #define C6 12299 #define C7 6270 TABLE_SSE2 }}; static av_always_inline void fdct_col(const int16_t *in, int16_t *out, int offset) { movq_m2r(*(in + offset + 1 * 8), mm0); movq_m2r(*(in + offset + 6 * 8), mm1); movq_r2r(mm0, mm2); movq_m2r(*(in + offset + 2 * 8), mm3); paddsw_r2r(mm1, mm0); movq_m2r(*(in + offset + 5 * 8), mm4); psllw_i2r(SHIFT_FRW_COL, mm0); movq_m2r(*(in + offset + 0 * 8), mm5); paddsw_r2r(mm3, mm4); paddsw_m2r(*(in + offset + 7 * 8), mm5); psllw_i2r(SHIFT_FRW_COL, mm4); movq_r2r(mm0, mm6); psubsw_r2r(mm1, mm2); movq_m2r(*(fdct_tg_all_16 + 4), mm1); psubsw_r2r(mm4, mm0); movq_m2r(*(in + offset + 3 * 8), mm7); pmulhw_r2r(mm0, mm1); paddsw_m2r(*(in + offset + 4 * 8), mm7); psllw_i2r(SHIFT_FRW_COL, mm5); paddsw_r2r(mm4, mm6); psllw_i2r(SHIFT_FRW_COL, mm7); movq_r2r(mm5, mm4); psubsw_r2r(mm7, mm5); paddsw_r2r(mm5, mm1); paddsw_r2r(mm7, mm4); por_m2r(fdct_one_corr, mm1); psllw_i2r(SHIFT_FRW_COL + 1, mm2); pmulhw_m2r(*(fdct_tg_all_16 + 4), mm5); movq_r2r(mm4, mm7); psubsw_m2r(*(in + offset + 5 * 8), mm3); psubsw_r2r(mm6, mm4); movq_r2m(mm1, *(out + offset + 2 * 8)); paddsw_r2r(mm6, mm7); movq_m2r(*(in + offset + 3 * 8), mm1); psllw_i2r(SHIFT_FRW_COL + 1, mm3); psubsw_m2r(*(in + offset + 4 * 8), mm1); movq_r2r(mm2, mm6); movq_r2m(mm4, *(out + offset + 4 * 8)); paddsw_r2r(mm3, mm2); pmulhw_m2r(*ocos_4_16, mm2); psubsw_r2r(mm3, mm6); pmulhw_m2r(*ocos_4_16, mm6); psubsw_r2r(mm0, mm5); por_m2r(fdct_one_corr, mm5); psllw_i2r(SHIFT_FRW_COL, mm1); por_m2r(fdct_one_corr, mm2); movq_r2r(mm1, mm4); movq_m2r(*(in + offset + 0 * 8), mm3); paddsw_r2r(mm6, mm1); psubsw_m2r(*(in + offset + 7 * 8), mm3); psubsw_r2r(mm6, mm4); movq_m2r(*(fdct_tg_all_16 + 0), mm0); psllw_i2r(SHIFT_FRW_COL, mm3); movq_m2r(*(fdct_tg_all_16 + 8), mm6); pmulhw_r2r(mm1, mm0); movq_r2m(mm7, *(out + offset + 0 * 8)); pmulhw_r2r(mm4, mm6); movq_r2m(mm5, *(out + offset + 6 * 8)); movq_r2r(mm3, mm7); movq_m2r(*(fdct_tg_all_16 + 8), mm5); psubsw_r2r(mm2, mm7); paddsw_r2r(mm2, mm3); pmulhw_r2r(mm7, mm5); paddsw_r2r(mm3, mm0); paddsw_r2r(mm4, mm6); pmulhw_m2r(*(fdct_tg_all_16 + 0), mm3); por_m2r(fdct_one_corr, mm0); paddsw_r2r(mm7, mm5); psubsw_r2r(mm6, mm7); movq_r2m(mm0, *(out + offset + 1 * 8)); paddsw_r2r(mm4, mm5); movq_r2m(mm7, *(out + offset + 3 * 8)); psubsw_r2r(mm1, mm3); movq_r2m(mm5, *(out + offset + 5 * 8)); movq_r2m(mm3, *(out + offset + 7 * 8)); } static av_always_inline void fdct_row_sse2(const int16_t *in, int16_t *out) { asm volatile( #define FDCT_ROW_SSE2_H1(i,t) \ "movq " #i "(%0), %%xmm2 \n\t" \ "movq " #i "+8(%0), %%xmm0 \n\t" \ "movdqa " #t "+32(%1), %%xmm3 \n\t" \ "movdqa " #t "+48(%1), %%xmm7 \n\t" \ "movdqa " #t "(%1), %%xmm4 \n\t" \ "movdqa " #t "+16(%1), %%xmm5 \n\t" #define FDCT_ROW_SSE2_H2(i,t) \ "movq " #i "(%0), %%xmm2 \n\t" \ "movq " #i "+8(%0), %%xmm0 \n\t" \ "movdqa " #t "+32(%1), %%xmm3 \n\t" \ "movdqa " #t "+48(%1), %%xmm7 \n\t" #define FDCT_ROW_SSE2(i) \ "movq %%xmm2, %%xmm1 \n\t" \ "pshuflw $27, %%xmm0, %%xmm0 \n\t" \ "paddsw %%xmm0, %%xmm1 \n\t" \ "psubsw %%xmm0, %%xmm2 \n\t" \ "punpckldq %%xmm2, %%xmm1 \n\t" \ "pshufd $78, %%xmm1, %%xmm2 \n\t" \ "pmaddwd %%xmm2, %%xmm3 \n\t" \ "pmaddwd %%xmm1, %%xmm7 \n\t" \ "pmaddwd %%xmm5, %%xmm2 \n\t" \ "pmaddwd %%xmm4, %%xmm1 \n\t" \ "paddd %%xmm7, %%xmm3 \n\t" \ "paddd %%xmm2, %%xmm1 \n\t" \ "paddd %%xmm6, %%xmm3 \n\t" \ "paddd %%xmm6, %%xmm1 \n\t" \ "psrad %3, %%xmm3 \n\t" \ "psrad %3, %%xmm1 \n\t" \ "packssdw %%xmm3, %%xmm1 \n\t" \ "movdqa %%xmm1, " #i "(%4) \n\t" "movdqa (%2), %%xmm6 \n\t" FDCT_ROW_SSE2_H1(0,0) FDCT_ROW_SSE2(0) FDCT_ROW_SSE2_H2(64,0) FDCT_ROW_SSE2(64) FDCT_ROW_SSE2_H1(16,64) FDCT_ROW_SSE2(16) FDCT_ROW_SSE2_H2(112,64) FDCT_ROW_SSE2(112) FDCT_ROW_SSE2_H1(32,128) FDCT_ROW_SSE2(32) FDCT_ROW_SSE2_H2(96,128) FDCT_ROW_SSE2(96) FDCT_ROW_SSE2_H1(48,192) FDCT_ROW_SSE2(48) FDCT_ROW_SSE2_H2(80,192) FDCT_ROW_SSE2(80) : : "r" (in), "r" (tab_frw_01234567_sse2.tab_frw_01234567_sse2), "r" (fdct_r_row_sse2.fdct_r_row_sse2), "i" (SHIFT_FRW_ROW), "r" (out) ); } static av_always_inline void fdct_row_mmx2(const int16_t *in, int16_t *out, const int16_t *table) { pshufw_m2r(*(in + 4), mm5, 0x1B); movq_m2r(*(in + 0), mm0); movq_r2r(mm0, mm1); paddsw_r2r(mm5, mm0); psubsw_r2r(mm5, mm1); movq_r2r(mm0, mm2); punpckldq_r2r(mm1, mm0); punpckhdq_r2r(mm1, mm2); movq_m2r(*(table + 0), mm1); movq_m2r(*(table + 4), mm3); movq_m2r(*(table + 8), mm4); movq_m2r(*(table + 12), mm5); movq_m2r(*(table + 16), mm6); movq_m2r(*(table + 20), mm7); pmaddwd_r2r(mm0, mm1); pmaddwd_r2r(mm2, mm3); pmaddwd_r2r(mm0, mm4); pmaddwd_r2r(mm2, mm5); pmaddwd_r2r(mm0, mm6); pmaddwd_r2r(mm2, mm7); pmaddwd_m2r(*(table + 24), mm0); pmaddwd_m2r(*(table + 28), mm2); paddd_r2r(mm1, mm3); paddd_r2r(mm4, mm5); paddd_r2r(mm6, mm7); paddd_r2r(mm0, mm2); movq_m2r(*fdct_r_row, mm0); paddd_r2r(mm0, mm3); paddd_r2r(mm0, mm5); paddd_r2r(mm0, mm7); paddd_r2r(mm0, mm2); psrad_i2r(SHIFT_FRW_ROW, mm3); psrad_i2r(SHIFT_FRW_ROW, mm5); psrad_i2r(SHIFT_FRW_ROW, mm7); psrad_i2r(SHIFT_FRW_ROW, mm2); packssdw_r2r(mm5, mm3); packssdw_r2r(mm2, mm7); movq_r2m(mm3, *(out + 0)); movq_r2m(mm7, *(out + 4)); } static av_always_inline void fdct_row_mmx(const int16_t *in, int16_t *out, const int16_t *table) { //FIXME reorder (i dont have a old mmx only cpu here to benchmark ...) movd_m2r(*(in + 6), mm1); punpcklwd_m2r(*(in + 4), mm1); movq_r2r(mm1, mm2); psrlq_i2r(0x20, mm1); movq_m2r(*(in + 0), mm0); punpcklwd_r2r(mm2, mm1); movq_r2r(mm0, mm5); paddsw_r2r(mm1, mm0); psubsw_r2r(mm1, mm5); movq_r2r(mm0, mm2); punpckldq_r2r(mm5, mm0); punpckhdq_r2r(mm5, mm2); movq_m2r(*(table + 0), mm1); movq_m2r(*(table + 4), mm3); movq_m2r(*(table + 8), mm4); movq_m2r(*(table + 12), mm5); movq_m2r(*(table + 16), mm6); movq_m2r(*(table + 20), mm7); pmaddwd_r2r(mm0, mm1); pmaddwd_r2r(mm2, mm3); pmaddwd_r2r(mm0, mm4); pmaddwd_r2r(mm2, mm5); pmaddwd_r2r(mm0, mm6); pmaddwd_r2r(mm2, mm7); pmaddwd_m2r(*(table + 24), mm0); pmaddwd_m2r(*(table + 28), mm2); paddd_r2r(mm1, mm3); paddd_r2r(mm4, mm5); paddd_r2r(mm6, mm7); paddd_r2r(mm0, mm2); movq_m2r(*fdct_r_row, mm0); paddd_r2r(mm0, mm3); paddd_r2r(mm0, mm5); paddd_r2r(mm0, mm7); paddd_r2r(mm0, mm2); psrad_i2r(SHIFT_FRW_ROW, mm3); psrad_i2r(SHIFT_FRW_ROW, mm5); psrad_i2r(SHIFT_FRW_ROW, mm7); psrad_i2r(SHIFT_FRW_ROW, mm2); packssdw_r2r(mm5, mm3); packssdw_r2r(mm2, mm7); movq_r2m(mm3, *(out + 0)); movq_r2m(mm7, *(out + 4)); } void ff_fdct_mmx(int16_t *block) { int64_t align_tmp[16] ATTR_ALIGN(8); int16_t * block1= (int16_t*)align_tmp; const int16_t *table= tab_frw_01234567; int i; fdct_col(block, block1, 0); fdct_col(block, block1, 4); for(i=8;i>0;i--) { fdct_row_mmx(block1, block, table); block1 += 8; table += 32; block += 8; } } void ff_fdct_mmx2(int16_t *block) { int64_t align_tmp[16] ATTR_ALIGN(8); int16_t *block1= (int16_t*)align_tmp; const int16_t *table= tab_frw_01234567; int i; fdct_col(block, block1, 0); fdct_col(block, block1, 4); for(i=8;i>0;i--) { fdct_row_mmx2(block1, block, table); block1 += 8; table += 32; block += 8; } } void ff_fdct_sse2(int16_t *block) { int64_t align_tmp[16] ATTR_ALIGN(16); int16_t * const block1= (int16_t*)align_tmp; fdct_col(block, block1, 0); fdct_col(block, block1, 4); fdct_row_sse2(block1, block); }