diff options
author | Lauri Kasanen <cand@gmx.com> | 2018-11-26 14:24:15 +0200 |
---|---|---|
committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-12-04 02:59:07 +0100 |
commit | 78c7ff7d250f8c2052b0734549549e628a505cb9 (patch) | |
tree | 393b155a932a2b416ee7f940dfc8e360f0c20716 /libswscale | |
parent | 060ea5261df52ff1ce20e87d1ddd0645fc58c2ca (diff) | |
download | ffmpeg-78c7ff7d250f8c2052b0734549549e628a505cb9.tar.gz |
swscale/ppc: Move VSX-using code to its own file
Passes fate on LE (with "lavc/jrevdct: Avoid an aliasing violation" applied).
Signed-off-by: Lauri Kasanen <cand@gmx.com>
Tested-by: Michael Kostylev on BE
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libswscale')
-rw-r--r-- | libswscale/ppc/Makefile | 1 | ||||
-rw-r--r-- | libswscale/ppc/swscale_altivec.c | 291 | ||||
-rw-r--r-- | libswscale/ppc/swscale_ppc_template.c | 217 | ||||
-rw-r--r-- | libswscale/ppc/swscale_vsx.c | 164 | ||||
-rw-r--r-- | libswscale/swscale_internal.h | 1 |
5 files changed, 393 insertions, 281 deletions
diff --git a/libswscale/ppc/Makefile b/libswscale/ppc/Makefile index d1b596eb3f..0a31a3025b 100644 --- a/libswscale/ppc/Makefile +++ b/libswscale/ppc/Makefile @@ -1,3 +1,4 @@ OBJS += ppc/swscale_altivec.o \ ppc/yuv2rgb_altivec.o \ ppc/yuv2yuv_altivec.o \ + ppc/swscale_vsx.o diff --git a/libswscale/ppc/swscale_altivec.c b/libswscale/ppc/swscale_altivec.c index 8c6056d841..1d2b2faae0 100644 --- a/libswscale/ppc/swscale_altivec.c +++ b/libswscale/ppc/swscale_altivec.c @@ -31,21 +31,14 @@ #include "yuv2rgb_altivec.h" #include "libavutil/ppc/util_altivec.h" -#if HAVE_ALTIVEC +#if HAVE_ALTIVEC && HAVE_BIGENDIAN #define vzero vec_splat_s32(0) -#if HAVE_BIGENDIAN #define GET_LS(a,b,c,s) {\ vector signed short l2 = vec_ld(((b) << 1) + 16, s);\ ls = vec_perm(a, l2, c);\ a = l2;\ } -#else -#define GET_LS(a,b,c,s) {\ - ls = a;\ - a = vec_vsx_ld(((b) << 1) + 16, s);\ - } -#endif #define yuv2planeX_8(d1, d2, l1, src, x, perm, filter) do {\ vector signed short ls;\ @@ -59,7 +52,6 @@ d2 = vec_add(d2, vf2);\ } while (0) -#if HAVE_BIGENDIAN #define LOAD_FILTER(vf,f) {\ vector unsigned char perm0 = vec_lvsl(joffset, f);\ vf = vec_ld(joffset, f);\ @@ -69,89 +61,7 @@ p = vec_lvsl(xoffset, s);\ ll1 = vec_ld(xoffset, s);\ } -#else -#define LOAD_FILTER(vf,f) {\ - vf = vec_vsx_ld(joffset, f);\ -} -#define LOAD_L1(ll1,s,p){\ - ll1 = vec_vsx_ld(xoffset, s);\ -} -#endif - -static void yuv2planeX_16_altivec(const int16_t *filter, int filterSize, - const int16_t **src, uint8_t *dest, - const uint8_t *dither, int offset, int x) -{ - register int i, j; - LOCAL_ALIGNED(16, int, val, [16]); - vector signed int vo1, vo2, vo3, vo4; - vector unsigned short vs1, vs2; - vector unsigned char vf; - vector unsigned int altivec_vectorShiftInt19 = - vec_add(vec_splat_u32(10), vec_splat_u32(9)); - - for (i = 0; i < 16; i++) - val[i] = dither[(x + i + offset) & 7] << 12; - - vo1 = vec_ld(0, val); - vo2 = vec_ld(16, val); - vo3 = vec_ld(32, val); - vo4 = vec_ld(48, val); - - for (j = 0; j < filterSize; j++) { - unsigned int joffset=j<<1; - unsigned int xoffset=x<<1; - vector unsigned char perm; - vector signed short l1,vLumFilter; - LOAD_FILTER(vLumFilter,filter); - vLumFilter = vec_splat(vLumFilter, 0); - LOAD_L1(l1,src[j],perm); - yuv2planeX_8(vo1, vo2, l1, src[j], x, perm, vLumFilter); - yuv2planeX_8(vo3, vo4, l1, src[j], x + 8, perm, vLumFilter); - } - - vo1 = vec_sra(vo1, altivec_vectorShiftInt19); - vo2 = vec_sra(vo2, altivec_vectorShiftInt19); - vo3 = vec_sra(vo3, altivec_vectorShiftInt19); - vo4 = vec_sra(vo4, altivec_vectorShiftInt19); - vs1 = vec_packsu(vo1, vo2); - vs2 = vec_packsu(vo3, vo4); - vf = vec_packsu(vs1, vs2); - VEC_ST(vf, 0, dest); -} - - -static inline void yuv2planeX_u(const int16_t *filter, int filterSize, - const int16_t **src, uint8_t *dest, int dstW, - const uint8_t *dither, int offset, int x) -{ - int i, j; - - for (i = x; i < dstW; i++) { - int t = dither[(i + offset) & 7] << 12; - for (j = 0; j < filterSize; j++) - t += src[j][i] * filter[j]; - dest[i] = av_clip_uint8(t >> 19); - } -} - -static void yuv2planeX_altivec(const int16_t *filter, int filterSize, - const int16_t **src, uint8_t *dest, int dstW, - const uint8_t *dither, int offset) -{ - int dst_u = -(uintptr_t)dest & 15; - int i; - - yuv2planeX_u(filter, filterSize, src, dest, dst_u, dither, offset, 0); - - for (i = dst_u; i < dstW - 15; i += 16) - yuv2planeX_16_altivec(filter, filterSize, src, dest + i, dither, - offset, i); - - yuv2planeX_u(filter, filterSize, src, dest, dstW, dither, offset, i); -} -#if HAVE_BIGENDIAN // The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2). // The neat trick: We only care for half the elements, @@ -187,191 +97,12 @@ static void yuv2planeX_altivec(const int16_t *filter, int filterSize, vf1 = vec_ld((a * 2 * filterSize) + (b * 2) + 16 + off, f);\ vf = vec_perm(vf0, vf1, per);\ } -#else /* else of #if HAVE_BIGENDIAN */ -#define GET_VF4(a, vf, f) {\ - vf = (vector signed short)vec_vsx_ld(a << 3, f);\ - vf = vec_mergeh(vf, (vector signed short)vzero);\ -} -#define FIRST_LOAD(sv, pos, s, per) {} -#define UPDATE_PTR(s0, d0, s1, d1) {} -#define LOAD_SRCV(pos, a, s, per, v0, v1, vf) {\ - vf = vec_vsx_ld(pos + a, s);\ -} -#define LOAD_SRCV8(pos, a, s, per, v0, v1, vf) LOAD_SRCV(pos, a, s, per, v0, v1, vf) -#define GET_VFD(a, b, f, vf0, vf1, per, vf, off) {\ - vf = vec_vsx_ld((a * 2 * filterSize) + (b * 2) + off, f);\ -} -#endif /* end of #if HAVE_BIGENDIAN */ -static void hScale_altivec_real(SwsContext *c, int16_t *dst, int dstW, - const uint8_t *src, const int16_t *filter, - const int32_t *filterPos, int filterSize) -{ - register int i; - LOCAL_ALIGNED(16, int, tempo, [4]); +#define FUNC(name) name ## _altivec +#include "swscale_ppc_template.c" +#undef FUNC - if (filterSize % 4) { - for (i = 0; i < dstW; i++) { - register int j; - register int srcPos = filterPos[i]; - register int val = 0; - for (j = 0; j < filterSize; j++) - val += ((int)src[srcPos + j]) * filter[filterSize * i + j]; - dst[i] = FFMIN(val >> 7, (1 << 15) - 1); - } - } else - switch (filterSize) { - case 4: - for (i = 0; i < dstW; i++) { - register int srcPos = filterPos[i]; - - vector unsigned char src_vF = unaligned_load(srcPos, src); - vector signed short src_v, filter_v; - vector signed int val_vEven, val_s; - src_v = // vec_unpackh sign-extends... - (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); - // now put our elements in the even slots - src_v = vec_mergeh(src_v, (vector signed short)vzero); - GET_VF4(i, filter_v, filter); - val_vEven = vec_mule(src_v, filter_v); - val_s = vec_sums(val_vEven, vzero); - vec_st(val_s, 0, tempo); - dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); - } - break; - case 8: - for (i = 0; i < dstW; i++) { - register int srcPos = filterPos[i]; - vector unsigned char src_vF, src_v0, src_v1; - vector unsigned char permS; - vector signed short src_v, filter_v; - vector signed int val_v, val_s; - FIRST_LOAD(src_v0, srcPos, src, permS); - LOAD_SRCV8(srcPos, 0, src, permS, src_v0, src_v1, src_vF); - src_v = // vec_unpackh sign-extends... - (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); - filter_v = vec_ld(i << 4, filter); - val_v = vec_msums(src_v, filter_v, (vector signed int)vzero); - val_s = vec_sums(val_v, vzero); - vec_st(val_s, 0, tempo); - dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); - } - break; - - case 16: - for (i = 0; i < dstW; i++) { - register int srcPos = filterPos[i]; - - vector unsigned char src_vF = unaligned_load(srcPos, src); - vector signed short src_vA = // vec_unpackh sign-extends... - (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); - vector signed short src_vB = // vec_unpackh sign-extends... - (vector signed short)(VEC_MERGEL((vector unsigned char)vzero, src_vF)); - vector signed short filter_v0 = vec_ld(i << 5, filter); - vector signed short filter_v1 = vec_ld((i << 5) + 16, filter); - - vector signed int val_acc = vec_msums(src_vA, filter_v0, (vector signed int)vzero); - vector signed int val_v = vec_msums(src_vB, filter_v1, val_acc); - - vector signed int val_s = vec_sums(val_v, vzero); - - VEC_ST(val_s, 0, tempo); - dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); - } - break; - - default: - for (i = 0; i < dstW; i++) { - register int j, offset = i * 2 * filterSize; - register int srcPos = filterPos[i]; - - vector signed int val_s, val_v = (vector signed int)vzero; - vector signed short filter_v0R; - vector unsigned char permF, src_v0, permS; - FIRST_LOAD(filter_v0R, offset, filter, permF); - FIRST_LOAD(src_v0, srcPos, src, permS); - - for (j = 0; j < filterSize - 15; j += 16) { - vector unsigned char src_v1, src_vF; - vector signed short filter_v1R, filter_v2R, filter_v0, filter_v1; - LOAD_SRCV(srcPos, j, src, permS, src_v0, src_v1, src_vF); - vector signed short src_vA = // vec_unpackh sign-extends... - (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); - vector signed short src_vB = // vec_unpackh sign-extends... - (vector signed short)(VEC_MERGEL((vector unsigned char)vzero, src_vF)); - GET_VFD(i, j, filter, filter_v0R, filter_v1R, permF, filter_v0, 0); - GET_VFD(i, j, filter, filter_v1R, filter_v2R, permF, filter_v1, 16); - - vector signed int val_acc = vec_msums(src_vA, filter_v0, val_v); - val_v = vec_msums(src_vB, filter_v1, val_acc); - UPDATE_PTR(filter_v2R, filter_v0R, src_v1, src_v0); - } - - if (j < filterSize - 7) { - // loading src_v0 is useless, it's already done above - vector unsigned char src_v1, src_vF; - vector signed short src_v, filter_v1R, filter_v; - LOAD_SRCV8(srcPos, j, src, permS, src_v0, src_v1, src_vF); - src_v = // vec_unpackh sign-extends... - (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); - GET_VFD(i, j, filter, filter_v0R, filter_v1R, permF, filter_v, 0); - val_v = vec_msums(src_v, filter_v, val_v); - } - val_s = vec_sums(val_v, vzero); - - VEC_ST(val_s, 0, tempo); - dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); - } - } -} - -static void yuv2plane1_8_u(const int16_t *src, uint8_t *dest, int dstW, - const uint8_t *dither, int offset, int start) -{ - int i; - for (i = start; i < dstW; i++) { - int val = (src[i] + dither[(i + offset) & 7]) >> 7; - dest[i] = av_clip_uint8(val); - } -} - -static void yuv2plane1_8_altivec(const int16_t *src, uint8_t *dest, int dstW, - const uint8_t *dither, int offset) -{ - const int dst_u = -(uintptr_t)dest & 15; - int i, j; - LOCAL_ALIGNED(16, int16_t, val, [16]); - const vector uint16_t shifts = (vector uint16_t) {7, 7, 7, 7, 7, 7, 7, 7}; - vector int16_t vi, vileft, ditherleft, ditherright; - vector uint8_t vd; - - for (j = 0; j < 16; j++) { - val[j] = dither[(dst_u + offset + j) & 7]; - } - - ditherleft = vec_ld(0, val); - ditherright = vec_ld(0, &val[8]); - - yuv2plane1_8_u(src, dest, dst_u, dither, offset, 0); - - for (i = dst_u; i < dstW - 15; i += 16) { - - vi = vec_vsx_ld(0, &src[i]); - vi = vec_adds(ditherleft, vi); - vileft = vec_sra(vi, shifts); - - vi = vec_vsx_ld(0, &src[i + 8]); - vi = vec_adds(ditherright, vi); - vi = vec_sra(vi, shifts); - - vd = vec_packsu(vileft, vi); - vec_st(vd, 0, &dest[i]); - } - - yuv2plane1_8_u(src, dest, dstW, dither, offset, i); -} - -#endif /* HAVE_ALTIVEC */ +#endif /* HAVE_ALTIVEC && HAVE_BIGENDIAN */ av_cold void ff_sws_init_swscale_ppc(SwsContext *c) { @@ -381,8 +112,9 @@ av_cold void ff_sws_init_swscale_ppc(SwsContext *c) if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC)) return; +#if HAVE_BIGENDIAN if (c->srcBpc == 8 && c->dstBpc <= 14) { - c->hyScale = c->hcScale = hScale_altivec_real; + c->hyScale = c->hcScale = hScale_real_altivec; } if (!is16BPS(dstFormat) && !isNBPS(dstFormat) && dstFormat != AV_PIX_FMT_NV12 && dstFormat != AV_PIX_FMT_NV21 && @@ -390,6 +122,7 @@ av_cold void ff_sws_init_swscale_ppc(SwsContext *c) !c->needAlpha) { c->yuv2planeX = yuv2planeX_altivec; } +#endif /* The following list of supported dstFormat values should * match what's found in the body of ff_yuv2packedX_altivec() */ @@ -414,12 +147,8 @@ av_cold void ff_sws_init_swscale_ppc(SwsContext *c) c->yuv2packedX = ff_yuv2rgb24_X_altivec; break; } - - switch (c->dstBpc) { - case 8: - c->yuv2plane1 = yuv2plane1_8_altivec; - break; - } } #endif /* HAVE_ALTIVEC */ + + ff_sws_init_swscale_vsx(c); } diff --git a/libswscale/ppc/swscale_ppc_template.c b/libswscale/ppc/swscale_ppc_template.c new file mode 100644 index 0000000000..00e4b99e00 --- /dev/null +++ b/libswscale/ppc/swscale_ppc_template.c @@ -0,0 +1,217 @@ +/* + * AltiVec-enhanced yuv2yuvX + * + * Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org> + * based on the equivalent C code in swscale.c + * + * 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 + */ + +static void FUNC(yuv2planeX_16)(const int16_t *filter, int filterSize, + const int16_t **src, uint8_t *dest, + const uint8_t *dither, int offset, int x) +{ + register int i, j; + LOCAL_ALIGNED(16, int, val, [16]); + vector signed int vo1, vo2, vo3, vo4; + vector unsigned short vs1, vs2; + vector unsigned char vf; + vector unsigned int altivec_vectorShiftInt19 = + vec_add(vec_splat_u32(10), vec_splat_u32(9)); + + for (i = 0; i < 16; i++) + val[i] = dither[(x + i + offset) & 7] << 12; + + vo1 = vec_ld(0, val); + vo2 = vec_ld(16, val); + vo3 = vec_ld(32, val); + vo4 = vec_ld(48, val); + + for (j = 0; j < filterSize; j++) { + unsigned int joffset=j<<1; + unsigned int xoffset=x<<1; + vector unsigned char perm; + vector signed short l1,vLumFilter; + LOAD_FILTER(vLumFilter,filter); + vLumFilter = vec_splat(vLumFilter, 0); + LOAD_L1(l1,src[j],perm); + yuv2planeX_8(vo1, vo2, l1, src[j], x, perm, vLumFilter); + yuv2planeX_8(vo3, vo4, l1, src[j], x + 8, perm, vLumFilter); + } + + vo1 = vec_sra(vo1, altivec_vectorShiftInt19); + vo2 = vec_sra(vo2, altivec_vectorShiftInt19); + vo3 = vec_sra(vo3, altivec_vectorShiftInt19); + vo4 = vec_sra(vo4, altivec_vectorShiftInt19); + vs1 = vec_packsu(vo1, vo2); + vs2 = vec_packsu(vo3, vo4); + vf = vec_packsu(vs1, vs2); + VEC_ST(vf, 0, dest); +} + + +static inline void yuv2planeX_u(const int16_t *filter, int filterSize, + const int16_t **src, uint8_t *dest, int dstW, + const uint8_t *dither, int offset, int x) +{ + int i, j; + + for (i = x; i < dstW; i++) { + int t = dither[(i + offset) & 7] << 12; + for (j = 0; j < filterSize; j++) + t += src[j][i] * filter[j]; + dest[i] = av_clip_uint8(t >> 19); + } +} + +static void FUNC(yuv2planeX)(const int16_t *filter, int filterSize, + const int16_t **src, uint8_t *dest, int dstW, + const uint8_t *dither, int offset) +{ + int dst_u = -(uintptr_t)dest & 15; + int i; + + yuv2planeX_u(filter, filterSize, src, dest, dst_u, dither, offset, 0); + + for (i = dst_u; i < dstW - 15; i += 16) + FUNC(yuv2planeX_16)(filter, filterSize, src, dest + i, dither, + offset, i); + + yuv2planeX_u(filter, filterSize, src, dest, dstW, dither, offset, i); +} + +static void FUNC(hScale_real)(SwsContext *c, int16_t *dst, int dstW, + const uint8_t *src, const int16_t *filter, + const int32_t *filterPos, int filterSize) +{ + register int i; + LOCAL_ALIGNED(16, int, tempo, [4]); + + if (filterSize % 4) { + for (i = 0; i < dstW; i++) { + register int j; + register int srcPos = filterPos[i]; + register int val = 0; + for (j = 0; j < filterSize; j++) + val += ((int)src[srcPos + j]) * filter[filterSize * i + j]; + dst[i] = FFMIN(val >> 7, (1 << 15) - 1); + } + } else + switch (filterSize) { + case 4: + for (i = 0; i < dstW; i++) { + register int srcPos = filterPos[i]; + + vector unsigned char src_vF = unaligned_load(srcPos, src); + vector signed short src_v, filter_v; + vector signed int val_vEven, val_s; + src_v = // vec_unpackh sign-extends... + (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); + // now put our elements in the even slots + src_v = vec_mergeh(src_v, (vector signed short)vzero); + GET_VF4(i, filter_v, filter); + val_vEven = vec_mule(src_v, filter_v); + val_s = vec_sums(val_vEven, vzero); + vec_st(val_s, 0, tempo); + dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); + } + break; + case 8: + for (i = 0; i < dstW; i++) { + register int srcPos = filterPos[i]; + vector unsigned char src_vF, src_v0, src_v1; + vector unsigned char permS; + vector signed short src_v, filter_v; + vector signed int val_v, val_s; + FIRST_LOAD(src_v0, srcPos, src, permS); + LOAD_SRCV8(srcPos, 0, src, permS, src_v0, src_v1, src_vF); + src_v = // vec_unpackh sign-extends... + (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); + filter_v = vec_ld(i << 4, filter); + val_v = vec_msums(src_v, filter_v, (vector signed int)vzero); + val_s = vec_sums(val_v, vzero); + vec_st(val_s, 0, tempo); + dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); + } + break; + + case 16: + for (i = 0; i < dstW; i++) { + register int srcPos = filterPos[i]; + + vector unsigned char src_vF = unaligned_load(srcPos, src); + vector signed short src_vA = // vec_unpackh sign-extends... + (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); + vector signed short src_vB = // vec_unpackh sign-extends... + (vector signed short)(VEC_MERGEL((vector unsigned char)vzero, src_vF)); + vector signed short filter_v0 = vec_ld(i << 5, filter); + vector signed short filter_v1 = vec_ld((i << 5) + 16, filter); + + vector signed int val_acc = vec_msums(src_vA, filter_v0, (vector signed int)vzero); + vector signed int val_v = vec_msums(src_vB, filter_v1, val_acc); + + vector signed int val_s = vec_sums(val_v, vzero); + + VEC_ST(val_s, 0, tempo); + dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); + } + break; + + default: + for (i = 0; i < dstW; i++) { + register int j, offset = i * 2 * filterSize; + register int srcPos = filterPos[i]; + + vector signed int val_s, val_v = (vector signed int)vzero; + vector signed short filter_v0R; + vector unsigned char permF, src_v0, permS; + FIRST_LOAD(filter_v0R, offset, filter, permF); + FIRST_LOAD(src_v0, srcPos, src, permS); + + for (j = 0; j < filterSize - 15; j += 16) { + vector unsigned char src_v1, src_vF; + vector signed short filter_v1R, filter_v2R, filter_v0, filter_v1; + LOAD_SRCV(srcPos, j, src, permS, src_v0, src_v1, src_vF); + vector signed short src_vA = // vec_unpackh sign-extends... + (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); + vector signed short src_vB = // vec_unpackh sign-extends... + (vector signed short)(VEC_MERGEL((vector unsigned char)vzero, src_vF)); + GET_VFD(i, j, filter, filter_v0R, filter_v1R, permF, filter_v0, 0); + GET_VFD(i, j, filter, filter_v1R, filter_v2R, permF, filter_v1, 16); + + vector signed int val_acc = vec_msums(src_vA, filter_v0, val_v); + val_v = vec_msums(src_vB, filter_v1, val_acc); + UPDATE_PTR(filter_v2R, filter_v0R, src_v1, src_v0); + } + + if (j < filterSize - 7) { + // loading src_v0 is useless, it's already done above + vector unsigned char src_v1, src_vF; + vector signed short src_v, filter_v1R, filter_v; + LOAD_SRCV8(srcPos, j, src, permS, src_v0, src_v1, src_vF); + src_v = // vec_unpackh sign-extends... + (vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF)); + GET_VFD(i, j, filter, filter_v0R, filter_v1R, permF, filter_v, 0); + val_v = vec_msums(src_v, filter_v, val_v); + } + val_s = vec_sums(val_v, vzero); + + VEC_ST(val_s, 0, tempo); + dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1); + } + } +} diff --git a/libswscale/ppc/swscale_vsx.c b/libswscale/ppc/swscale_vsx.c new file mode 100644 index 0000000000..853b5875ec --- /dev/null +++ b/libswscale/ppc/swscale_vsx.c @@ -0,0 +1,164 @@ +/* + * AltiVec-enhanced yuv2yuvX + * + * Copyright (C) 2004 Romain Dolbeau <romain@dolbeau.org> + * based on the equivalent C code in swscale.c + * + * 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 <inttypes.h> + +#include "config.h" +#include "libswscale/swscale.h" +#include "libswscale/swscale_internal.h" +#include "libavutil/attributes.h" +#include "libavutil/cpu.h" +#include "yuv2rgb_altivec.h" +#include "libavutil/ppc/util_altivec.h" + +#if HAVE_VSX +#define vzero vec_splat_s32(0) + +#if !HAVE_BIGENDIAN +#define GET_LS(a,b,c,s) {\ + ls = a;\ + a = vec_vsx_ld(((b) << 1) + 16, s);\ + } + +#define yuv2planeX_8(d1, d2, l1, src, x, perm, filter) do {\ + vector signed short ls;\ + GET_LS(l1, x, perm, src);\ + vector signed int i1 = vec_mule(filter, ls);\ + vector signed int i2 = vec_mulo(filter, ls);\ + vector signed int vf1, vf2;\ + vf1 = vec_mergeh(i1, i2);\ + vf2 = vec_mergel(i1, i2);\ + d1 = vec_add(d1, vf1);\ + d2 = vec_add(d2, vf2);\ + } while (0) + +#define LOAD_FILTER(vf,f) {\ + vf = vec_vsx_ld(joffset, f);\ +} +#define LOAD_L1(ll1,s,p){\ + ll1 = vec_vsx_ld(xoffset, s);\ +} + +// The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2). + +// The neat trick: We only care for half the elements, +// high or low depending on (i<<3)%16 (it's 0 or 8 here), +// and we're going to use vec_mule, so we choose +// carefully how to "unpack" the elements into the even slots. +#define GET_VF4(a, vf, f) {\ + vf = (vector signed short)vec_vsx_ld(a << 3, f);\ + vf = vec_mergeh(vf, (vector signed short)vzero);\ +} +#define FIRST_LOAD(sv, pos, s, per) {} +#define UPDATE_PTR(s0, d0, s1, d1) {} +#define LOAD_SRCV(pos, a, s, per, v0, v1, vf) {\ + vf = vec_vsx_ld(pos + a, s);\ +} +#define LOAD_SRCV8(pos, a, s, per, v0, v1, vf) LOAD_SRCV(pos, a, s, per, v0, v1, vf) +#define GET_VFD(a, b, f, vf0, vf1, per, vf, off) {\ + vf = vec_vsx_ld((a * 2 * filterSize) + (b * 2) + off, f);\ +} + +#define FUNC(name) name ## _vsx +#include "swscale_ppc_template.c" +#undef FUNC + +#endif /* !HAVE_BIGENDIAN */ + +static void yuv2plane1_8_u(const int16_t *src, uint8_t *dest, int dstW, + const uint8_t *dither, int offset, int start) +{ + int i; + for (i = start; i < dstW; i++) { + int val = (src[i] + dither[(i + offset) & 7]) >> 7; + dest[i] = av_clip_uint8(val); + } +} + +static void yuv2plane1_8_vsx(const int16_t *src, uint8_t *dest, int dstW, + const uint8_t *dither, int offset) +{ + const int dst_u = -(uintptr_t)dest & 15; + int i, j; + LOCAL_ALIGNED(16, int16_t, val, [16]); + const vector uint16_t shifts = (vector uint16_t) {7, 7, 7, 7, 7, 7, 7, 7}; + vector int16_t vi, vileft, ditherleft, ditherright; + vector uint8_t vd; + + for (j = 0; j < 16; j++) { + val[j] = dither[(dst_u + offset + j) & 7]; + } + + ditherleft = vec_ld(0, val); + ditherright = vec_ld(0, &val[8]); + + yuv2plane1_8_u(src, dest, dst_u, dither, offset, 0); + + for (i = dst_u; i < dstW - 15; i += 16) { + + vi = vec_vsx_ld(0, &src[i]); + vi = vec_adds(ditherleft, vi); + vileft = vec_sra(vi, shifts); + + vi = vec_vsx_ld(0, &src[i + 8]); + vi = vec_adds(ditherright, vi); + vi = vec_sra(vi, shifts); + + vd = vec_packsu(vileft, vi); + vec_st(vd, 0, &dest[i]); + } + + yuv2plane1_8_u(src, dest, dstW, dither, offset, i); +} + +#endif /* HAVE_VSX */ + +av_cold void ff_sws_init_swscale_vsx(SwsContext *c) +{ +#if HAVE_VSX + enum AVPixelFormat dstFormat = c->dstFormat; + + if (!(av_get_cpu_flags() & AV_CPU_FLAG_VSX)) + return; + +#if !HAVE_BIGENDIAN + if (c->srcBpc == 8 && c->dstBpc <= 14) { + c->hyScale = c->hcScale = hScale_real_vsx; + } + if (!is16BPS(dstFormat) && !isNBPS(dstFormat) && + dstFormat != AV_PIX_FMT_NV12 && dstFormat != AV_PIX_FMT_NV21 && + dstFormat != AV_PIX_FMT_GRAYF32BE && dstFormat != AV_PIX_FMT_GRAYF32LE && + !c->needAlpha) { + c->yuv2planeX = yuv2planeX_vsx; + } +#endif + + if (!(c->flags & (SWS_BITEXACT | SWS_FULL_CHR_H_INT)) && !c->needAlpha) { + switch (c->dstBpc) { + case 8: + c->yuv2plane1 = yuv2plane1_8_vsx; + break; + } + } +#endif /* HAVE_VSX */ +} diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h index 4fa59386a6..a59d12745a 100644 --- a/libswscale/swscale_internal.h +++ b/libswscale/swscale_internal.h @@ -868,6 +868,7 @@ void ff_sws_init_output_funcs(SwsContext *c, yuv2packedX_fn *yuv2packedX, yuv2anyX_fn *yuv2anyX); void ff_sws_init_swscale_ppc(SwsContext *c); +void ff_sws_init_swscale_vsx(SwsContext *c); void ff_sws_init_swscale_x86(SwsContext *c); void ff_sws_init_swscale_aarch64(SwsContext *c); void ff_sws_init_swscale_arm(SwsContext *c); |