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annotate libavcodec/arm/mpegvideo_iwmmxt.c @ 9:ea1ba68cf0ed

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update to match api changes + add sscc produced source
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Wed, 05 Jun 2013 14:43:26 +0200
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nengel@2 1 /*
nengel@2 2 * copyright (c) 2004 AGAWA Koji
nengel@2 3 *
nengel@2 4 * This file is part of FFmpeg.
nengel@2 5 *
nengel@2 6 * FFmpeg is free software; you can redistribute it and/or
nengel@2 7 * modify it under the terms of the GNU Lesser General Public
nengel@2 8 * License as published by the Free Software Foundation; either
nengel@2 9 * version 2.1 of the License, or (at your option) any later version.
nengel@2 10 *
nengel@2 11 * FFmpeg is distributed in the hope that it will be useful,
nengel@2 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
nengel@2 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
nengel@2 14 * Lesser General Public License for more details.
nengel@2 15 *
nengel@2 16 * You should have received a copy of the GNU Lesser General Public
nengel@2 17 * License along with FFmpeg; if not, write to the Free Software
nengel@2 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
nengel@2 19 */
nengel@2 20
nengel@2 21 #include "libavcodec/avcodec.h"
nengel@2 22 #include "libavcodec/dsputil.h"
nengel@2 23 #include "libavcodec/mpegvideo.h"
nengel@2 24 #include "mpegvideo_arm.h"
nengel@2 25
nengel@2 26 static void dct_unquantize_h263_intra_iwmmxt(MpegEncContext *s,
nengel@2 27 DCTELEM *block, int n, int qscale)
nengel@2 28 {
nengel@2 29 int level, qmul, qadd;
nengel@2 30 int nCoeffs;
nengel@2 31 DCTELEM *block_orig = block;
nengel@2 32
nengel@2 33 assert(s->block_last_index[n]>=0);
nengel@2 34
nengel@2 35 qmul = qscale << 1;
nengel@2 36
nengel@2 37 if (!s->h263_aic) {
nengel@2 38 if (n < 4)
nengel@2 39 level = block[0] * s->y_dc_scale;
nengel@2 40 else
nengel@2 41 level = block[0] * s->c_dc_scale;
nengel@2 42 qadd = (qscale - 1) | 1;
nengel@2 43 }else{
nengel@2 44 qadd = 0;
nengel@2 45 level = block[0];
nengel@2 46 }
nengel@2 47 if(s->ac_pred)
nengel@2 48 nCoeffs=63;
nengel@2 49 else
nengel@2 50 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
nengel@2 51
nengel@2 52 __asm__ volatile (
nengel@2 53 /* "movd %1, %%mm6 \n\t" //qmul */
nengel@2 54 /* "packssdw %%mm6, %%mm6 \n\t" */
nengel@2 55 /* "packssdw %%mm6, %%mm6 \n\t" */
nengel@2 56 "tbcsth wr6, %[qmul] \n\t"
nengel@2 57 /* "movd %2, %%mm5 \n\t" //qadd */
nengel@2 58 /* "packssdw %%mm5, %%mm5 \n\t" */
nengel@2 59 /* "packssdw %%mm5, %%mm5 \n\t" */
nengel@2 60 "tbcsth wr5, %[qadd] \n\t"
nengel@2 61 "wzero wr7 \n\t" /* "pxor %%mm7, %%mm7 \n\t" */
nengel@2 62 "wzero wr4 \n\t" /* "pxor %%mm4, %%mm4 \n\t" */
nengel@2 63 "wsubh wr7, wr5, wr7 \n\t" /* "psubw %%mm5, %%mm7 \n\t" */
nengel@2 64 "1: \n\t"
nengel@2 65 "wldrd wr2, [%[block]] \n\t" /* "movq (%0, %3), %%mm0 \n\t" */
nengel@2 66 "wldrd wr3, [%[block], #8] \n\t" /* "movq 8(%0, %3), %%mm1 \n\t" */
nengel@2 67 "wmulsl wr0, wr6, wr2 \n\t" /* "pmullw %%mm6, %%mm0 \n\t" */
nengel@2 68 "wmulsl wr1, wr6, wr3 \n\t" /* "pmullw %%mm6, %%mm1 \n\t" */
nengel@2 69 /* "movq (%0, %3), %%mm2 \n\t" */
nengel@2 70 /* "movq 8(%0, %3), %%mm3 \n\t" */
nengel@2 71 "wcmpgtsh wr2, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm2 \n\t" // block[i] < 0 ? -1 : 0 */
nengel@2 72 "wcmpgtsh wr3, wr4, wr2 \n\t" /* "pcmpgtw %%mm4, %%mm3 \n\t" // block[i] < 0 ? -1 : 0 */
nengel@2 73 "wxor wr0, wr2, wr0 \n\t" /* "pxor %%mm2, %%mm0 \n\t" */
nengel@2 74 "wxor wr1, wr3, wr1 \n\t" /* "pxor %%mm3, %%mm1 \n\t" */
nengel@2 75 "waddh wr0, wr7, wr0 \n\t" /* "paddw %%mm7, %%mm0 \n\t" */
nengel@2 76 "waddh wr1, wr7, wr1 \n\t" /* "paddw %%mm7, %%mm1 \n\t" */
nengel@2 77 "wxor wr2, wr0, wr2 \n\t" /* "pxor %%mm0, %%mm2 \n\t" */
nengel@2 78 "wxor wr3, wr1, wr3 \n\t" /* "pxor %%mm1, %%mm3 \n\t" */
nengel@2 79 "wcmpeqh wr0, wr7, wr0 \n\t" /* "pcmpeqw %%mm7, %%mm0 \n\t" // block[i] == 0 ? -1 : 0 */
nengel@2 80 "wcmpeqh wr1, wr7, wr1 \n\t" /* "pcmpeqw %%mm7, %%mm1 \n\t" // block[i] == 0 ? -1 : 0 */
nengel@2 81 "wandn wr0, wr2, wr0 \n\t" /* "pandn %%mm2, %%mm0 \n\t" */
nengel@2 82 "wandn wr1, wr3, wr1 \n\t" /* "pandn %%mm3, %%mm1 \n\t" */
nengel@2 83 "wstrd wr0, [%[block]] \n\t" /* "movq %%mm0, (%0, %3) \n\t" */
nengel@2 84 "wstrd wr1, [%[block], #8] \n\t" /* "movq %%mm1, 8(%0, %3) \n\t" */
nengel@2 85 "add %[block], %[block], #16 \n\t" /* "addl $16, %3 \n\t" */
nengel@2 86 "subs %[i], %[i], #1 \n\t"
nengel@2 87 "bne 1b \n\t" /* "jng 1b \n\t" */
nengel@2 88 :[block]"+r"(block)
nengel@2 89 :[i]"r"((nCoeffs + 8) / 8), [qmul]"r"(qmul), [qadd]"r"(qadd)
nengel@2 90 :"memory");
nengel@2 91
nengel@2 92 block_orig[0] = level;
nengel@2 93 }
nengel@2 94
nengel@2 95 #if 0
nengel@2 96 static void dct_unquantize_h263_inter_iwmmxt(MpegEncContext *s,
nengel@2 97 DCTELEM *block, int n, int qscale)
nengel@2 98 {
nengel@2 99 int nCoeffs;
nengel@2 100
nengel@2 101 assert(s->block_last_index[n]>=0);
nengel@2 102
nengel@2 103 if(s->ac_pred)
nengel@2 104 nCoeffs=63;
nengel@2 105 else
nengel@2 106 nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
nengel@2 107
nengel@2 108 ippiQuantInvInter_Compact_H263_16s_I(block, nCoeffs+1, qscale);
nengel@2 109 }
nengel@2 110 #endif
nengel@2 111
nengel@2 112 void MPV_common_init_iwmmxt(MpegEncContext *s)
nengel@2 113 {
nengel@2 114 if (!(mm_flags & FF_MM_IWMMXT)) return;
nengel@2 115
nengel@2 116 s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_iwmmxt;
nengel@2 117 #if 0
nengel@2 118 s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_iwmmxt;
nengel@2 119 #endif
nengel@2 120 }