From 0e5d31b16b39f0b4d2e3307714af592dd65cf123 Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Thu, 2 Jun 2011 20:17:20 -0700 Subject: swscale: split out unscaled altivec YUV converters in their own file. --- libswscale/ppc/yuv2yuv_altivec.c | 191 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 191 insertions(+) create mode 100644 libswscale/ppc/yuv2yuv_altivec.c (limited to 'libswscale/ppc/yuv2yuv_altivec.c') diff --git a/libswscale/ppc/yuv2yuv_altivec.c b/libswscale/ppc/yuv2yuv_altivec.c new file mode 100644 index 0000000000..4cd02ffe1d --- /dev/null +++ b/libswscale/ppc/yuv2yuv_altivec.c @@ -0,0 +1,191 @@ +/* + * AltiVec-enhanced yuv-to-yuv convertion routines. + * + * Copyright (C) 2004 Romain Dolbeau + * based on the equivalent C code in swscale.c + * + * 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 +#include "config.h" +#include "libswscale/swscale.h" +#include "libswscale/swscale_internal.h" +#include "libavutil/cpu.h" + +static int yv12toyuy2_unscaled_altivec(SwsContext *c, const uint8_t* src[], + int srcStride[], int srcSliceY, + int srcSliceH, uint8_t* dstParam[], + int dstStride_a[]) +{ + uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY; + // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]); + const uint8_t *ysrc = src[0]; + const uint8_t *usrc = src[1]; + const uint8_t *vsrc = src[2]; + const int width = c->srcW; + const int height = srcSliceH; + const int lumStride = srcStride[0]; + const int chromStride = srcStride[1]; + const int dstStride = dstStride_a[0]; + const vector unsigned char yperm = vec_lvsl(0, ysrc); + const int vertLumPerChroma = 2; + register unsigned int y; + + /* This code assumes: + + 1) dst is 16 bytes-aligned + 2) dstStride is a multiple of 16 + 3) width is a multiple of 16 + 4) lum & chrom stride are multiples of 8 + */ + + for (y=0; y> 1; + vector unsigned char v_yA = vec_ld(i, ysrc); + vector unsigned char v_yB = vec_ld(i + 16, ysrc); + vector unsigned char v_yC = vec_ld(i + 32, ysrc); + vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm); + vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm); + vector unsigned char v_uA = vec_ld(j, usrc); + vector unsigned char v_uB = vec_ld(j + 16, usrc); + vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc)); + vector unsigned char v_vA = vec_ld(j, vsrc); + vector unsigned char v_vB = vec_ld(j + 16, vsrc); + vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc)); + vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); + vector unsigned char v_uv_b = vec_mergel(v_u, v_v); + vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a); + vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a); + vector unsigned char v_yuy2_2 = vec_mergeh(v_y2, v_uv_b); + vector unsigned char v_yuy2_3 = vec_mergel(v_y2, v_uv_b); + vec_st(v_yuy2_0, (i << 1), dst); + vec_st(v_yuy2_1, (i << 1) + 16, dst); + vec_st(v_yuy2_2, (i << 1) + 32, dst); + vec_st(v_yuy2_3, (i << 1) + 48, dst); + } + if (i < width) { + const unsigned int j = i >> 1; + vector unsigned char v_y1 = vec_ld(i, ysrc); + vector unsigned char v_u = vec_ld(j, usrc); + vector unsigned char v_v = vec_ld(j, vsrc); + vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); + vector unsigned char v_yuy2_0 = vec_mergeh(v_y1, v_uv_a); + vector unsigned char v_yuy2_1 = vec_mergel(v_y1, v_uv_a); + vec_st(v_yuy2_0, (i << 1), dst); + vec_st(v_yuy2_1, (i << 1) + 16, dst); + } + if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) { + usrc += chromStride; + vsrc += chromStride; + } + ysrc += lumStride; + dst += dstStride; + } + + return srcSliceH; +} + +static int yv12touyvy_unscaled_altivec(SwsContext *c, const uint8_t* src[], + int srcStride[], int srcSliceY, + int srcSliceH, uint8_t* dstParam[], + int dstStride_a[]) +{ + uint8_t *dst=dstParam[0] + dstStride_a[0]*srcSliceY; + // yv12toyuy2(src[0], src[1], src[2], dst, c->srcW, srcSliceH, srcStride[0], srcStride[1], dstStride[0]); + const uint8_t *ysrc = src[0]; + const uint8_t *usrc = src[1]; + const uint8_t *vsrc = src[2]; + const int width = c->srcW; + const int height = srcSliceH; + const int lumStride = srcStride[0]; + const int chromStride = srcStride[1]; + const int dstStride = dstStride_a[0]; + const int vertLumPerChroma = 2; + const vector unsigned char yperm = vec_lvsl(0, ysrc); + register unsigned int y; + + /* This code assumes: + + 1) dst is 16 bytes-aligned + 2) dstStride is a multiple of 16 + 3) width is a multiple of 16 + 4) lum & chrom stride are multiples of 8 + */ + + for (y=0; y> 1; + vector unsigned char v_yA = vec_ld(i, ysrc); + vector unsigned char v_yB = vec_ld(i + 16, ysrc); + vector unsigned char v_yC = vec_ld(i + 32, ysrc); + vector unsigned char v_y1 = vec_perm(v_yA, v_yB, yperm); + vector unsigned char v_y2 = vec_perm(v_yB, v_yC, yperm); + vector unsigned char v_uA = vec_ld(j, usrc); + vector unsigned char v_uB = vec_ld(j + 16, usrc); + vector unsigned char v_u = vec_perm(v_uA, v_uB, vec_lvsl(j, usrc)); + vector unsigned char v_vA = vec_ld(j, vsrc); + vector unsigned char v_vB = vec_ld(j + 16, vsrc); + vector unsigned char v_v = vec_perm(v_vA, v_vB, vec_lvsl(j, vsrc)); + vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); + vector unsigned char v_uv_b = vec_mergel(v_u, v_v); + vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1); + vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1); + vector unsigned char v_uyvy_2 = vec_mergeh(v_uv_b, v_y2); + vector unsigned char v_uyvy_3 = vec_mergel(v_uv_b, v_y2); + vec_st(v_uyvy_0, (i << 1), dst); + vec_st(v_uyvy_1, (i << 1) + 16, dst); + vec_st(v_uyvy_2, (i << 1) + 32, dst); + vec_st(v_uyvy_3, (i << 1) + 48, dst); + } + if (i < width) { + const unsigned int j = i >> 1; + vector unsigned char v_y1 = vec_ld(i, ysrc); + vector unsigned char v_u = vec_ld(j, usrc); + vector unsigned char v_v = vec_ld(j, vsrc); + vector unsigned char v_uv_a = vec_mergeh(v_u, v_v); + vector unsigned char v_uyvy_0 = vec_mergeh(v_uv_a, v_y1); + vector unsigned char v_uyvy_1 = vec_mergel(v_uv_a, v_y1); + vec_st(v_uyvy_0, (i << 1), dst); + vec_st(v_uyvy_1, (i << 1) + 16, dst); + } + if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) { + usrc += chromStride; + vsrc += chromStride; + } + ysrc += lumStride; + dst += dstStride; + } + return srcSliceH; +} + +void ff_swscale_get_unscaled_altivec(SwsContext *c) +{ + if ((av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) && !(c->srcW & 15) && + !(c->flags & SWS_BITEXACT) && c->srcFormat == PIX_FMT_YUV420P) { + enum PixelFormat dstFormat = c->dstFormat; + + // unscaled YV12 -> packed YUV, we want speed + if (dstFormat == PIX_FMT_YUYV422) + c->swScale= yv12toyuy2_unscaled_altivec; + else if (dstFormat == PIX_FMT_UYVY422) + c->swScale= yv12touyvy_unscaled_altivec; + } +} -- cgit v1.2.3