diff options
author | Michael Niedermayer <michaelni@gmx.at> | 2009-03-04 01:51:30 +0300 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2009-03-04 01:51:30 +0300 |
commit | 6d4f53cbacbec4fc83f4f84d109c7c68abeecf4a (patch) | |
tree | 7fb4c6eab6fc1863929b9422824f261d0af6784a /libavcodec/ppc | |
parent | 1ad1eaadd6be407d5ca78ad9d50028031ca37e65 (diff) |
Remove old scaler.
Originally committed as revision 17786 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/ppc')
-rw-r--r-- | libavcodec/ppc/imgresample_altivec.c | 142 | ||||
-rw-r--r-- | libavcodec/ppc/imgresample_altivec.h | 26 |
2 files changed, 0 insertions, 168 deletions
diff --git a/libavcodec/ppc/imgresample_altivec.c b/libavcodec/ppc/imgresample_altivec.c deleted file mode 100644 index 02d08aee4c..0000000000 --- a/libavcodec/ppc/imgresample_altivec.c +++ /dev/null @@ -1,142 +0,0 @@ -/* - * High quality image resampling with polyphase filters - * Copyright (c) 2001 Fabrice Bellard - * - * 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 - */ - -/** - * @file libavcodec/ppc/imgresample_altivec.c - * High quality image resampling with polyphase filters - AltiVec bits - */ - -#include "util_altivec.h" -#define FILTER_BITS 8 - -typedef union { - vector signed short v; - signed short s[8]; -} vec_ss; - -void v_resample16_altivec(uint8_t *dst, int dst_width, const uint8_t *src, - int wrap, int16_t *filter) -{ - int sum, i; - const uint8_t *s; - vector unsigned char *tv, tmp, dstv, zero; - vec_ss srchv[4], srclv[4], fv[4]; - vector signed short zeros, sumhv, sumlv; - s = src; - - for(i=0;i<4;i++) { - /* - The vec_madds later on does an implicit >>15 on the result. - Since FILTER_BITS is 8, and we have 15 bits of magnitude in - a signed short, we have just enough bits to pre-shift our - filter constants <<7 to compensate for vec_madds. - */ - fv[i].s[0] = filter[i] << (15-FILTER_BITS); - fv[i].v = vec_splat(fv[i].v, 0); - } - - zero = vec_splat_u8(0); - zeros = vec_splat_s16(0); - - - /* - When we're resampling, we'd ideally like both our input buffers, - and output buffers to be 16-byte aligned, so we can do both aligned - reads and writes. Sadly we can't always have this at the moment, so - we opt for aligned writes, as unaligned writes have a huge overhead. - To do this, do enough scalar resamples to get dst 16-byte aligned. - */ - i = (-(int)dst) & 0xf; - while(i>0) { - sum = s[0 * wrap] * filter[0] + - s[1 * wrap] * filter[1] + - s[2 * wrap] * filter[2] + - s[3 * wrap] * filter[3]; - sum = sum >> FILTER_BITS; - if (sum<0) sum = 0; else if (sum>255) sum=255; - dst[0] = sum; - dst++; - s++; - dst_width--; - i--; - } - - /* Do our altivec resampling on 16 pixels at once. */ - while(dst_width>=16) { - /* Read 16 (potentially unaligned) bytes from each of - 4 lines into 4 vectors, and split them into shorts. - Interleave the multipy/accumulate for the resample - filter with the loads to hide the 3 cycle latency - the vec_madds have. */ - tv = (vector unsigned char *) &s[0 * wrap]; - tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[i * wrap])); - srchv[0].v = (vector signed short) vec_mergeh(zero, tmp); - srclv[0].v = (vector signed short) vec_mergel(zero, tmp); - sumhv = vec_madds(srchv[0].v, fv[0].v, zeros); - sumlv = vec_madds(srclv[0].v, fv[0].v, zeros); - - tv = (vector unsigned char *) &s[1 * wrap]; - tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[1 * wrap])); - srchv[1].v = (vector signed short) vec_mergeh(zero, tmp); - srclv[1].v = (vector signed short) vec_mergel(zero, tmp); - sumhv = vec_madds(srchv[1].v, fv[1].v, sumhv); - sumlv = vec_madds(srclv[1].v, fv[1].v, sumlv); - - tv = (vector unsigned char *) &s[2 * wrap]; - tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[2 * wrap])); - srchv[2].v = (vector signed short) vec_mergeh(zero, tmp); - srclv[2].v = (vector signed short) vec_mergel(zero, tmp); - sumhv = vec_madds(srchv[2].v, fv[2].v, sumhv); - sumlv = vec_madds(srclv[2].v, fv[2].v, sumlv); - - tv = (vector unsigned char *) &s[3 * wrap]; - tmp = vec_perm(tv[0], tv[1], vec_lvsl(0, &s[3 * wrap])); - srchv[3].v = (vector signed short) vec_mergeh(zero, tmp); - srclv[3].v = (vector signed short) vec_mergel(zero, tmp); - sumhv = vec_madds(srchv[3].v, fv[3].v, sumhv); - sumlv = vec_madds(srclv[3].v, fv[3].v, sumlv); - - /* Pack the results into our destination vector, - and do an aligned write of that back to memory. */ - dstv = vec_packsu(sumhv, sumlv) ; - vec_st(dstv, 0, (vector unsigned char *) dst); - - dst+=16; - s+=16; - dst_width-=16; - } - - /* If there are any leftover pixels, resample them - with the slow scalar method. */ - while(dst_width>0) { - sum = s[0 * wrap] * filter[0] + - s[1 * wrap] * filter[1] + - s[2 * wrap] * filter[2] + - s[3 * wrap] * filter[3]; - sum = sum >> FILTER_BITS; - if (sum<0) sum = 0; else if (sum>255) sum=255; - dst[0] = sum; - dst++; - s++; - dst_width--; - } -} - diff --git a/libavcodec/ppc/imgresample_altivec.h b/libavcodec/ppc/imgresample_altivec.h deleted file mode 100644 index 27b85f9a84..0000000000 --- a/libavcodec/ppc/imgresample_altivec.h +++ /dev/null @@ -1,26 +0,0 @@ -/* - * 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 - */ - -#ifndef AVCODEC_PPC_IMGRESAMPLE_ALTIVEC_H -#define AVCODEC_PPC_IMGRESAMPLE_ALTIVEC_H - -#include <stdint.h> - -void v_resample16_altivec(uint8_t *dst, int dst_width, const uint8_t *src, - int wrap, int16_t *filter); -#endif /* AVCODEC_PPC_IMGRESAMPLE_ALTIVEC_H */ |