diff options
Diffstat (limited to 'ffmpeg/libavcodec/ppc/mpegvideo_altivec.c')
| -rw-r--r-- | ffmpeg/libavcodec/ppc/mpegvideo_altivec.c | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/ffmpeg/libavcodec/ppc/mpegvideo_altivec.c b/ffmpeg/libavcodec/ppc/mpegvideo_altivec.c deleted file mode 100644 index cedc1c8..0000000 --- a/ffmpeg/libavcodec/ppc/mpegvideo_altivec.c +++ /dev/null @@ -1,130 +0,0 @@ -/* - * Copyright (c) 2002 Dieter Shirley - * - * dct_unquantize_h263_altivec: - * Copyright (c) 2003 Romain Dolbeau <romain@dolbeau.org> - * - * 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 <stdlib.h> -#include <stdio.h> - -#include "config.h" -#include "libavutil/attributes.h" -#include "libavutil/cpu.h" -#include "libavutil/ppc/types_altivec.h" -#include "libavutil/ppc/util_altivec.h" -#include "libavcodec/mpegvideo.h" -#include "dsputil_altivec.h" - -#if HAVE_ALTIVEC - -/* AltiVec version of dct_unquantize_h263 - this code assumes `block' is 16 bytes-aligned */ -static void dct_unquantize_h263_altivec(MpegEncContext *s, - int16_t *block, int n, int qscale) -{ - int i, level, qmul, qadd; - int nCoeffs; - - assert(s->block_last_index[n]>=0); - - qadd = (qscale - 1) | 1; - qmul = qscale << 1; - - if (s->mb_intra) { - if (!s->h263_aic) { - if (n < 4) - block[0] = block[0] * s->y_dc_scale; - else - block[0] = block[0] * s->c_dc_scale; - }else - qadd = 0; - i = 1; - nCoeffs= 63; //does not always use zigzag table - } else { - i = 0; - nCoeffs= s->intra_scantable.raster_end[ s->block_last_index[n] ]; - } - - { - register const vector signed short vczero = (const vector signed short)vec_splat_s16(0); - DECLARE_ALIGNED(16, short, qmul8) = qmul; - DECLARE_ALIGNED(16, short, qadd8) = qadd; - register vector signed short blockv, qmulv, qaddv, nqaddv, temp1; - register vector bool short blockv_null, blockv_neg; - register short backup_0 = block[0]; - register int j = 0; - - qmulv = vec_splat((vec_s16)vec_lde(0, &qmul8), 0); - qaddv = vec_splat((vec_s16)vec_lde(0, &qadd8), 0); - nqaddv = vec_sub(vczero, qaddv); - - // vectorize all the 16 bytes-aligned blocks - // of 8 elements - for(; (j + 7) <= nCoeffs ; j+=8) { - blockv = vec_ld(j << 1, block); - blockv_neg = vec_cmplt(blockv, vczero); - blockv_null = vec_cmpeq(blockv, vczero); - // choose between +qadd or -qadd as the third operand - temp1 = vec_sel(qaddv, nqaddv, blockv_neg); - // multiply & add (block{i,i+7} * qmul [+-] qadd) - temp1 = vec_mladd(blockv, qmulv, temp1); - // put 0 where block[{i,i+7} used to have 0 - blockv = vec_sel(temp1, blockv, blockv_null); - vec_st(blockv, j << 1, block); - } - - // if nCoeffs isn't a multiple of 8, finish the job - // using good old scalar units. - // (we could do it using a truncated vector, - // but I'm not sure it's worth the hassle) - for(; j <= nCoeffs ; j++) { - level = block[j]; - if (level) { - if (level < 0) { - level = level * qmul - qadd; - } else { - level = level * qmul + qadd; - } - block[j] = level; - } - } - - if (i == 1) { - // cheat. this avoid special-casing the first iteration - block[0] = backup_0; - } - } -} - -#endif /* HAVE_ALTIVEC */ - -av_cold void ff_MPV_common_init_ppc(MpegEncContext *s) -{ -#if HAVE_ALTIVEC - if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC)) - return; - - if ((s->avctx->dct_algo == FF_DCT_AUTO) || - (s->avctx->dct_algo == FF_DCT_ALTIVEC)) { - s->dct_unquantize_h263_intra = dct_unquantize_h263_altivec; - s->dct_unquantize_h263_inter = dct_unquantize_h263_altivec; - } -#endif /* HAVE_ALTIVEC */ -} |