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"
24
#include "mpegvideo_arm.h"
26
static void dct_unquantize_h263_intra_iwmmxt(MpegEncContext *s,
27
DCTELEM *block, int n, int qscale)
29
int level, qmul, qadd;
31
DCTELEM *block_orig = block;
33
assert(s->block_last_index[n]>=0);
39
level = block[0] * s->y_dc_scale;
41
level = block[0] * s->c_dc_scale;
42
qadd = (qscale - 1) | 1;
50
nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
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" */
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" */
89
:[i]"r"((nCoeffs + 8) / 8), [qmul]"r"(qmul), [qadd]"r"(qadd)
92
block_orig[0] = level;
96
static void dct_unquantize_h263_inter_iwmmxt(MpegEncContext *s,
97
DCTELEM *block, int n, int qscale)
101
assert(s->block_last_index[n]>=0);
106
nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
108
ippiQuantInvInter_Compact_H263_16s_I(block, nCoeffs+1, qscale);
112
void MPV_common_init_iwmmxt(MpegEncContext *s)
114
if (!(mm_flags & FF_MM_IWMMXT)) return;
116
s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_iwmmxt;
118
s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_iwmmxt;