2 * copyright (c) 2004 AGAWA Koji
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavcodec/avcodec.h"
22 #include "libavcodec/dsputil.h"
23 #include "libavcodec/mpegvideo.h"
25 static void dct_unquantize_h263_intra_iwmmxt(MpegEncContext *s,
26 DCTELEM *block, int n, int qscale)
28 int level, qmul, qadd;
30 DCTELEM *block_orig = block;
32 assert(s->block_last_index[n]>=0);
38 level = block[0] * s->y_dc_scale;
40 level = block[0] * s->c_dc_scale;
41 qadd = (qscale - 1) | 1;
49 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
52 /* "movd %1, %%mm6 \n\t" //qmul */
53 /* "packssdw %%mm6, %%mm6 \n\t" */
54 /* "packssdw %%mm6, %%mm6 \n\t" */
55 "tbcsth wr6, %[qmul] \n\t"
56 /* "movd %2, %%mm5 \n\t" //qadd */
57 /* "packssdw %%mm5, %%mm5 \n\t" */
58 /* "packssdw %%mm5, %%mm5 \n\t" */
59 "tbcsth wr5, %[qadd] \n\t"
60 "wzero wr7 \n\t" /* "pxor %%mm7, %%mm7 \n\t" */
61 "wzero wr4 \n\t" /* "pxor %%mm4, %%mm4 \n\t" */
62 "wsubh wr7, wr5, wr7 \n\t" /* "psubw %%mm5, %%mm7 \n\t" */
64 "wldrd wr2, [%[block]] \n\t" /* "movq (%0, %3), %%mm0 \n\t" */
65 "wldrd wr3, [%[block], #8] \n\t" /* "movq 8(%0, %3), %%mm1 \n\t" */
66 "wmulsl wr0, wr6, wr2 \n\t" /* "pmullw %%mm6, %%mm0 \n\t" */
67 "wmulsl wr1, wr6, wr3 \n\t" /* "pmullw %%mm6, %%mm1 \n\t" */
68 /* "movq (%0, %3), %%mm2 \n\t" */
69 /* "movq 8(%0, %3), %%mm3 \n\t" */
70 "wcmpgtsh wr2, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0 */
71 "wcmpgtsh wr3, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0 */
72 "wxor wr0, wr2, wr0 \n\t" /* "pxor %%mm2, %%mm0 \n\t" */
73 "wxor wr1, wr3, wr1 \n\t" /* "pxor %%mm3, %%mm1 \n\t" */
74 "waddh wr0, wr7, wr0 \n\t" /* "paddw %%mm7, %%mm0 \n\t" */
75 "waddh wr1, wr7, wr1 \n\t" /* "paddw %%mm7, %%mm1 \n\t" */
76 "wxor wr2, wr0, wr2 \n\t" /* "pxor %%mm0, %%mm2 \n\t" */
77 "wxor wr3, wr1, wr3 \n\t" /* "pxor %%mm1, %%mm3 \n\t" */
78 "wcmpeqh wr0, wr7, wr0 \n\t" /* "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0 */
79 "wcmpeqh wr1, wr7, wr1 \n\t" /* "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0 */
80 "wandn wr0, wr2, wr0 \n\t" /* "pandn %%mm2, %%mm0 \n\t" */
81 "wandn wr1, wr3, wr1 \n\t" /* "pandn %%mm3, %%mm1 \n\t" */
82 "wstrd wr0, [%[block]] \n\t" /* "movq %%mm0, (%0, %3) \n\t" */
83 "wstrd wr1, [%[block], #8] \n\t" /* "movq %%mm1, 8(%0, %3) \n\t" */
84 "add %[block], %[block], #16 \n\t" /* "addl $16, %3 \n\t" */
85 "subs %[i], %[i], #1 \n\t"
86 "bne 1b \n\t" /* "jng 1b \n\t" */
88 :[i]"r"((nCoeffs + 8) / 8), [qmul]"r"(qmul), [qadd]"r"(qadd)
91 block_orig[0] = level;
95 static void dct_unquantize_h263_inter_iwmmxt(MpegEncContext *s,
96 DCTELEM *block, int n, int qscale)
100 assert(s->block_last_index[n]>=0);
105 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
107 ippiQuantInvInter_Compact_H263_16s_I(block, nCoeffs+1, qscale);
111 void MPV_common_init_iwmmxt(MpegEncContext *s)
113 if (!(mm_flags & MM_IWMMXT)) return;
115 s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_iwmmxt;
117 s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_iwmmxt;