1/* 2 * copyright (c) 2004 AGAWA Koji 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21#include "libavcodec/avcodec.h" 22#include "libavcodec/dsputil.h" 23#include "libavcodec/mpegvideo.h" 24#include "mpegvideo_arm.h" 25 26static void dct_unquantize_h263_intra_iwmmxt(MpegEncContext *s, 27 DCTELEM *block, int n, int qscale) 28{ 29 int level, qmul, qadd; 30 int nCoeffs; 31 DCTELEM *block_orig = block; 32 33 assert(s->block_last_index[n]>=0); 34 35 qmul = qscale << 1; 36 37 if (!s->h263_aic) { 38 if (n < 4) 39 level = block[0] * s->y_dc_scale; 40 else 41 level = block[0] * s->c_dc_scale; 42 qadd = (qscale - 1) | 1; 43 }else{ 44 qadd = 0; 45 level = block[0]; 46 } 47 if(s->ac_pred) 48 nCoeffs=63; 49 else 50 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ]; 51 52 __asm__ volatile ( 53/* "movd %1, %%mm6 \n\t" //qmul */ 54/* "packssdw %%mm6, %%mm6 \n\t" */ 55/* "packssdw %%mm6, %%mm6 \n\t" */ 56 "tbcsth wr6, %[qmul] \n\t" 57/* "movd %2, %%mm5 \n\t" //qadd */ 58/* "packssdw %%mm5, %%mm5 \n\t" */ 59/* "packssdw %%mm5, %%mm5 \n\t" */ 60 "tbcsth wr5, %[qadd] \n\t" 61 "wzero wr7 \n\t" /* "pxor %%mm7, %%mm7 \n\t" */ 62 "wzero wr4 \n\t" /* "pxor %%mm4, %%mm4 \n\t" */ 63 "wsubh wr7, wr5, wr7 \n\t" /* "psubw %%mm5, %%mm7 \n\t" */ 64 "1: \n\t" 65 "wldrd wr2, [%[block]] \n\t" /* "movq (%0, %3), %%mm0 \n\t" */ 66 "wldrd wr3, [%[block], #8] \n\t" /* "movq 8(%0, %3), %%mm1 \n\t" */ 67 "wmulsl wr0, wr6, wr2 \n\t" /* "pmullw %%mm6, %%mm0 \n\t" */ 68 "wmulsl wr1, wr6, wr3 \n\t" /* "pmullw %%mm6, %%mm1 \n\t" */ 69/* "movq (%0, %3), %%mm2 \n\t" */ 70/* "movq 8(%0, %3), %%mm3 \n\t" */ 71 "wcmpgtsh wr2, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0 */ 72 "wcmpgtsh wr3, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0 */ 73 "wxor wr0, wr2, wr0 \n\t" /* "pxor %%mm2, %%mm0 \n\t" */ 74 "wxor wr1, wr3, wr1 \n\t" /* "pxor %%mm3, %%mm1 \n\t" */ 75 "waddh wr0, wr7, wr0 \n\t" /* "paddw %%mm7, %%mm0 \n\t" */ 76 "waddh wr1, wr7, wr1 \n\t" /* "paddw %%mm7, %%mm1 \n\t" */ 77 "wxor wr2, wr0, wr2 \n\t" /* "pxor %%mm0, %%mm2 \n\t" */ 78 "wxor wr3, wr1, wr3 \n\t" /* "pxor %%mm1, %%mm3 \n\t" */ 79 "wcmpeqh wr0, wr7, wr0 \n\t" /* "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0 */ 80 "wcmpeqh wr1, wr7, wr1 \n\t" /* "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0 */ 81 "wandn wr0, wr2, wr0 \n\t" /* "pandn %%mm2, %%mm0 \n\t" */ 82 "wandn wr1, wr3, wr1 \n\t" /* "pandn %%mm3, %%mm1 \n\t" */ 83 "wstrd wr0, [%[block]] \n\t" /* "movq %%mm0, (%0, %3) \n\t" */ 84 "wstrd wr1, [%[block], #8] \n\t" /* "movq %%mm1, 8(%0, %3) \n\t" */ 85 "add %[block], %[block], #16 \n\t" /* "addl $16, %3 \n\t" */ 86 "subs %[i], %[i], #1 \n\t" 87 "bne 1b \n\t" /* "jng 1b \n\t" */ 88 :[block]"+r"(block) 89 :[i]"r"((nCoeffs + 8) / 8), [qmul]"r"(qmul), [qadd]"r"(qadd) 90 :"memory"); 91 92 block_orig[0] = level; 93} 94 95#if 0 96static void dct_unquantize_h263_inter_iwmmxt(MpegEncContext *s, 97 DCTELEM *block, int n, int qscale) 98{ 99 int nCoeffs; 100 101 assert(s->block_last_index[n]>=0); 102 103 if(s->ac_pred) 104 nCoeffs=63; 105 else 106 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ]; 107 108 ippiQuantInvInter_Compact_H263_16s_I(block, nCoeffs+1, qscale); 109} 110#endif 111 112void MPV_common_init_iwmmxt(MpegEncContext *s) 113{ 114 if (!(mm_flags & FF_MM_IWMMXT)) return; 115 116 s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_iwmmxt; 117#if 0 118 s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_iwmmxt; 119#endif 120} 121