| /* |
| * copyright (c) 2004 AGAWA Koji |
| * |
| * 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 "libavcodec/avcodec.h" |
| #include "libavcodec/dsputil.h" |
| #include "libavcodec/mpegvideo.h" |
| |
| static void dct_unquantize_h263_intra_iwmmxt(MpegEncContext *s, |
| DCTELEM *block, int n, int qscale) |
| { |
| int level, qmul, qadd; |
| int nCoeffs; |
| DCTELEM *block_orig = block; |
| |
| assert(s->block_last_index[n]>=0); |
| |
| qmul = qscale << 1; |
| |
| if (!s->h263_aic) { |
| if (n < 4) |
| level = block[0] * s->y_dc_scale; |
| else |
| level = block[0] * s->c_dc_scale; |
| qadd = (qscale - 1) | 1; |
| }else{ |
| qadd = 0; |
| level = block[0]; |
| } |
| if(s->ac_pred) |
| nCoeffs=63; |
| else |
| nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ]; |
| |
| __asm__ volatile ( |
| /* "movd %1, %%mm6 \n\t" //qmul */ |
| /* "packssdw %%mm6, %%mm6 \n\t" */ |
| /* "packssdw %%mm6, %%mm6 \n\t" */ |
| "tbcsth wr6, %[qmul] \n\t" |
| /* "movd %2, %%mm5 \n\t" //qadd */ |
| /* "packssdw %%mm5, %%mm5 \n\t" */ |
| /* "packssdw %%mm5, %%mm5 \n\t" */ |
| "tbcsth wr5, %[qadd] \n\t" |
| "wzero wr7 \n\t" /* "pxor %%mm7, %%mm7 \n\t" */ |
| "wzero wr4 \n\t" /* "pxor %%mm4, %%mm4 \n\t" */ |
| "wsubh wr7, wr5, wr7 \n\t" /* "psubw %%mm5, %%mm7 \n\t" */ |
| "1: \n\t" |
| "wldrd wr2, [%[block]] \n\t" /* "movq (%0, %3), %%mm0 \n\t" */ |
| "wldrd wr3, [%[block], #8] \n\t" /* "movq 8(%0, %3), %%mm1 \n\t" */ |
| "wmulsl wr0, wr6, wr2 \n\t" /* "pmullw %%mm6, %%mm0 \n\t" */ |
| "wmulsl wr1, wr6, wr3 \n\t" /* "pmullw %%mm6, %%mm1 \n\t" */ |
| /* "movq (%0, %3), %%mm2 \n\t" */ |
| /* "movq 8(%0, %3), %%mm3 \n\t" */ |
| "wcmpgtsh wr2, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0 */ |
| "wcmpgtsh wr3, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0 */ |
| "wxor wr0, wr2, wr0 \n\t" /* "pxor %%mm2, %%mm0 \n\t" */ |
| "wxor wr1, wr3, wr1 \n\t" /* "pxor %%mm3, %%mm1 \n\t" */ |
| "waddh wr0, wr7, wr0 \n\t" /* "paddw %%mm7, %%mm0 \n\t" */ |
| "waddh wr1, wr7, wr1 \n\t" /* "paddw %%mm7, %%mm1 \n\t" */ |
| "wxor wr2, wr0, wr2 \n\t" /* "pxor %%mm0, %%mm2 \n\t" */ |
| "wxor wr3, wr1, wr3 \n\t" /* "pxor %%mm1, %%mm3 \n\t" */ |
| "wcmpeqh wr0, wr7, wr0 \n\t" /* "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0 */ |
| "wcmpeqh wr1, wr7, wr1 \n\t" /* "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0 */ |
| "wandn wr0, wr2, wr0 \n\t" /* "pandn %%mm2, %%mm0 \n\t" */ |
| "wandn wr1, wr3, wr1 \n\t" /* "pandn %%mm3, %%mm1 \n\t" */ |
| "wstrd wr0, [%[block]] \n\t" /* "movq %%mm0, (%0, %3) \n\t" */ |
| "wstrd wr1, [%[block], #8] \n\t" /* "movq %%mm1, 8(%0, %3) \n\t" */ |
| "add %[block], %[block], #16 \n\t" /* "addl $16, %3 \n\t" */ |
| "subs %[i], %[i], #1 \n\t" |
| "bne 1b \n\t" /* "jng 1b \n\t" */ |
| :[block]"+r"(block) |
| :[i]"r"((nCoeffs + 8) / 8), [qmul]"r"(qmul), [qadd]"r"(qadd) |
| :"memory"); |
| |
| block_orig[0] = level; |
| } |
| |
| #if 0 |
| static void dct_unquantize_h263_inter_iwmmxt(MpegEncContext *s, |
| DCTELEM *block, int n, int qscale) |
| { |
| int nCoeffs; |
| |
| assert(s->block_last_index[n]>=0); |
| |
| if(s->ac_pred) |
| nCoeffs=63; |
| else |
| nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ]; |
| |
| ippiQuantInvInter_Compact_H263_16s_I(block, nCoeffs+1, qscale); |
| } |
| #endif |
| |
| void MPV_common_init_iwmmxt(MpegEncContext *s) |
| { |
| if (!(mm_flags & FF_MM_IWMMXT)) return; |
| |
| s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_iwmmxt; |
| #if 0 |
| s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_iwmmxt; |
| #endif |
| } |