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https://github.com/FFmpeg/FFmpeg.git
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120 lines
5.0 KiB
C
120 lines
5.0 KiB
C
/*
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* copyright (c) 2004 AGAWA Koji
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavcodec/avcodec.h"
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#include "libavcodec/dsputil.h"
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#include "libavcodec/mpegvideo.h"
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static void dct_unquantize_h263_intra_iwmmxt(MpegEncContext *s,
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DCTELEM *block, int n, int qscale)
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{
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int level, qmul, qadd;
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int nCoeffs;
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DCTELEM *block_orig = block;
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assert(s->block_last_index[n]>=0);
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qmul = qscale << 1;
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if (!s->h263_aic) {
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if (n < 4)
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level = block[0] * s->y_dc_scale;
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else
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level = block[0] * s->c_dc_scale;
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qadd = (qscale - 1) | 1;
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}else{
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qadd = 0;
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level = block[0];
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}
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if(s->ac_pred)
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nCoeffs=63;
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else
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nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
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asm volatile (
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/* "movd %1, %%mm6 \n\t" //qmul */
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/* "packssdw %%mm6, %%mm6 \n\t" */
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/* "packssdw %%mm6, %%mm6 \n\t" */
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"tbcsth wr6, %[qmul] \n\t"
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/* "movd %2, %%mm5 \n\t" //qadd */
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/* "packssdw %%mm5, %%mm5 \n\t" */
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/* "packssdw %%mm5, %%mm5 \n\t" */
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"tbcsth wr5, %[qadd] \n\t"
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"wzero wr7 \n\t" /* "pxor %%mm7, %%mm7 \n\t" */
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"wzero wr4 \n\t" /* "pxor %%mm4, %%mm4 \n\t" */
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"wsubh wr7, wr5, wr7 \n\t" /* "psubw %%mm5, %%mm7 \n\t" */
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"1: \n\t"
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"wldrd wr2, [%[block]] \n\t" /* "movq (%0, %3), %%mm0 \n\t" */
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"wldrd wr3, [%[block], #8] \n\t" /* "movq 8(%0, %3), %%mm1 \n\t" */
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"wmulsl wr0, wr6, wr2 \n\t" /* "pmullw %%mm6, %%mm0 \n\t" */
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"wmulsl wr1, wr6, wr3 \n\t" /* "pmullw %%mm6, %%mm1 \n\t" */
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/* "movq (%0, %3), %%mm2 \n\t" */
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/* "movq 8(%0, %3), %%mm3 \n\t" */
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"wcmpgtsh wr2, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0 */
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"wcmpgtsh wr3, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0 */
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"wxor wr0, wr2, wr0 \n\t" /* "pxor %%mm2, %%mm0 \n\t" */
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"wxor wr1, wr3, wr1 \n\t" /* "pxor %%mm3, %%mm1 \n\t" */
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"waddh wr0, wr7, wr0 \n\t" /* "paddw %%mm7, %%mm0 \n\t" */
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"waddh wr1, wr7, wr1 \n\t" /* "paddw %%mm7, %%mm1 \n\t" */
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"wxor wr2, wr0, wr2 \n\t" /* "pxor %%mm0, %%mm2 \n\t" */
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"wxor wr3, wr1, wr3 \n\t" /* "pxor %%mm1, %%mm3 \n\t" */
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"wcmpeqh wr0, wr7, wr0 \n\t" /* "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0 */
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"wcmpeqh wr1, wr7, wr1 \n\t" /* "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0 */
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"wandn wr0, wr2, wr0 \n\t" /* "pandn %%mm2, %%mm0 \n\t" */
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"wandn wr1, wr3, wr1 \n\t" /* "pandn %%mm3, %%mm1 \n\t" */
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"wstrd wr0, [%[block]] \n\t" /* "movq %%mm0, (%0, %3) \n\t" */
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"wstrd wr1, [%[block], #8] \n\t" /* "movq %%mm1, 8(%0, %3) \n\t" */
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"add %[block], %[block], #16 \n\t" /* "addl $16, %3 \n\t" */
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"subs %[i], %[i], #1 \n\t"
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"bne 1b \n\t" /* "jng 1b \n\t" */
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:[block]"+r"(block)
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:[i]"r"((nCoeffs + 8) / 8), [qmul]"r"(qmul), [qadd]"r"(qadd)
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:"memory");
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block_orig[0] = level;
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}
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#if 0
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static void dct_unquantize_h263_inter_iwmmxt(MpegEncContext *s,
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DCTELEM *block, int n, int qscale)
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{
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int nCoeffs;
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assert(s->block_last_index[n]>=0);
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if(s->ac_pred)
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nCoeffs=63;
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else
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nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
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ippiQuantInvInter_Compact_H263_16s_I(block, nCoeffs+1, qscale);
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}
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#endif
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void MPV_common_init_iwmmxt(MpegEncContext *s)
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{
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if (!(mm_flags & MM_IWMMXT)) return;
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s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_iwmmxt;
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#if 0
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s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_iwmmxt;
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#endif
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}
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