diff options
author | Diego Biurrun <diego@biurrun.de> | 2013-11-13 23:39:56 +0400 |
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committer | Diego Biurrun <diego@biurrun.de> | 2013-11-13 23:45:49 +0400 |
commit | c7f7bfc9e3a3150ba72bc34366c13fb2210c66ac (patch) | |
tree | 4857540a20b55136121e14403a9cb86d4369955d /libavcodec/alpha/mpegvideo_alpha.c | |
parent | 16381923fb7b9087ce559fb1cd3594469ac6788b (diff) |
Remove all Alpha architecture optimizations
Alpha has been end-of-lifed and no more test machines are available.
Diffstat (limited to 'libavcodec/alpha/mpegvideo_alpha.c')
-rw-r--r-- | libavcodec/alpha/mpegvideo_alpha.c | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/libavcodec/alpha/mpegvideo_alpha.c b/libavcodec/alpha/mpegvideo_alpha.c deleted file mode 100644 index 5557159379..0000000000 --- a/libavcodec/alpha/mpegvideo_alpha.c +++ /dev/null @@ -1,110 +0,0 @@ -/* - * Alpha optimized DSP utils - * Copyright (c) 2002 Falk Hueffner <falk@debian.org> - * - * This file is part of Libav. - * - * Libav 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. - * - * Libav 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 Libav; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "libavutil/attributes.h" -#include "libavcodec/mpegvideo.h" -#include "asm.h" - -static void dct_unquantize_h263_axp(int16_t *block, int n_coeffs, - uint64_t qscale, uint64_t qadd) -{ - uint64_t qmul = qscale << 1; - uint64_t correction = WORD_VEC(qmul * 255 >> 8); - int i; - - qadd = WORD_VEC(qadd); - - for(i = 0; i <= n_coeffs; block += 4, i += 4) { - uint64_t levels, negmask, zeros, add, sub; - - levels = ldq(block); - if (levels == 0) - continue; - -#ifdef __alpha_max__ - /* I don't think the speed difference justifies runtime - detection. */ - negmask = maxsw4(levels, -1); /* negative -> ffff (-1) */ - negmask = minsw4(negmask, 0); /* positive -> 0000 (0) */ -#else - negmask = cmpbge(WORD_VEC(0x7fff), levels); - negmask &= (negmask >> 1) | (1 << 7); - negmask = zap(-1, negmask); -#endif - - zeros = cmpbge(0, levels); - zeros &= zeros >> 1; - /* zeros |= zeros << 1 is not needed since qadd <= 255, so - zapping the lower byte suffices. */ - - levels *= qmul; - levels -= correction & (negmask << 16); - - add = qadd & ~negmask; - sub = qadd & negmask; - /* Set qadd to 0 for levels == 0. */ - add = zap(add, zeros); - levels += add; - levels -= sub; - - stq(levels, block); - } -} - -static void dct_unquantize_h263_intra_axp(MpegEncContext *s, int16_t *block, - int n, int qscale) -{ - int n_coeffs; - uint64_t qadd; - int16_t block0 = block[0]; - - if (!s->h263_aic) { - if (n < 4) - block0 *= s->y_dc_scale; - else - block0 *= s->c_dc_scale; - qadd = (qscale - 1) | 1; - } else { - qadd = 0; - } - - if(s->ac_pred) - n_coeffs = 63; - else - n_coeffs = s->inter_scantable.raster_end[s->block_last_index[n]]; - - dct_unquantize_h263_axp(block, n_coeffs, qscale, qadd); - - block[0] = block0; -} - -static void dct_unquantize_h263_inter_axp(MpegEncContext *s, int16_t *block, - int n, int qscale) -{ - int n_coeffs = s->inter_scantable.raster_end[s->block_last_index[n]]; - dct_unquantize_h263_axp(block, n_coeffs, qscale, (qscale - 1) | 1); -} - -av_cold void ff_MPV_common_init_axp(MpegEncContext *s) -{ - s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_axp; - s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_axp; -} |