diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/alpha/mpegvideo_alpha.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/alpha/mpegvideo_alpha.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/contrib/ffmpeg/libavcodec/alpha/mpegvideo_alpha.c b/contrib/ffmpeg/libavcodec/alpha/mpegvideo_alpha.c deleted file mode 100644 index 8ad264b06..000000000 --- a/contrib/ffmpeg/libavcodec/alpha/mpegvideo_alpha.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * Alpha optimized DSP utils - * Copyright (c) 2002 Falk Hueffner <falk@debian.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 "asm.h" -#include "../dsputil.h" -#include "../mpegvideo.h" - -static void dct_unquantize_h263_intra_axp(MpegEncContext *s, DCTELEM *block, - int n, int qscale) -{ - int i, n_coeffs; - uint64_t qmul, qadd; - uint64_t correction; - DCTELEM *orig_block = block; - DCTELEM block0; /* might not be used uninitialized */ - - qadd = WORD_VEC((qscale - 1) | 1); - qmul = qscale << 1; - /* This mask kills spill from negative subwords to the next subword. */ - correction = WORD_VEC((qmul - 1) + 1); /* multiplication / addition */ - - if (!s->h263_aic) { - if (n < 4) - block0 = block[0] * s->y_dc_scale; - else - block0 = block[0] * s->c_dc_scale; - } else { - qadd = 0; - } - n_coeffs = 63; // does not always use zigzag table - - for(i = 0; i <= n_coeffs; block += 4, i += 4) { - uint64_t levels, negmask, zeros, add; - - 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); - - /* Negate qadd for negative levels. */ - add = qadd ^ negmask; - add += WORD_VEC(0x0001) & negmask; - /* Set qadd to 0 for levels == 0. */ - add = zap(add, zeros); - - levels += add; - - stq(levels, block); - } - - if (s->mb_intra && !s->h263_aic) - orig_block[0] = block0; -} - -static void dct_unquantize_h263_inter_axp(MpegEncContext *s, DCTELEM *block, - int n, int qscale) -{ - int i, n_coeffs; - uint64_t qmul, qadd; - uint64_t correction; - - qadd = WORD_VEC((qscale - 1) | 1); - qmul = qscale << 1; - /* This mask kills spill from negative subwords to the next subword. */ - correction = WORD_VEC((qmul - 1) + 1); /* multiplication / addition */ - - n_coeffs = s->intra_scantable.raster_end[s->block_last_index[n]]; - - for(i = 0; i <= n_coeffs; block += 4, i += 4) { - uint64_t levels, negmask, zeros, add; - - 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); - - /* Negate qadd for negative levels. */ - add = qadd ^ negmask; - add += WORD_VEC(0x0001) & negmask; - /* Set qadd to 0 for levels == 0. */ - add = zap(add, zeros); - - levels += add; - - stq(levels, block); - } -} - -void 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; -} |