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1df908f33f
FFmpeg/libswscale/ppc/input_vsx.c
Dan Parrot 1df908f33f PPC64: Add versions of functions in libswscale/input.c optimized for POWER8 VSX SIMD. 
This patch addresses Trac ticket #5570. The optimized functions are in file
libswscale/ppc/input_vsx.c. Each optimized function name is a concatenation of the
corresponding name in libswscale/input.c with suffix _vsx.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2016-06-30 12:02:08 +02:00

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/*
* Copyright (C) 2016 Dan Parrot <dan.parrot@mail.com>
*
* 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 <math.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include "libavutil/avutil.h"
#include "libavutil/bswap.h"
#include "libavutil/cpu.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/avassert.h"
#include "config.h"
#include "libswscale/rgb2rgb.h"
#include "libswscale/swscale.h"
#include "libswscale/swscale_internal.h"
#if HAVE_VSX
static void abgrToA_c_vsx(uint8_t *_dst, const uint8_t *src, const uint8_t *unused1, const uint8_t *unused2,
int width, uint32_t *unused)
{
int16_t *dst = (int16_t *)_dst;
int i, width_adj, frag_len;
uintptr_t src_addr = (uintptr_t)src;
uintptr_t dst_addr = (uintptr_t)dst;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 3;
width_adj = width_adj << 3;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 8) {
vector int v_rd0 = vec_vsx_ld(0, (int *)src_addr);
vector int v_rd1 = vec_vsx_ld(0, (int *)(src_addr + 16));
v_rd0 = vec_and(v_rd0, vec_splats(0x0ff));
v_rd1 = vec_and(v_rd1, vec_splats(0x0ff));
v_rd0 = vec_sl(v_rd0, vec_splats((unsigned)6));
v_rd1 = vec_sl(v_rd1, vec_splats((unsigned)6));
vector int v_dst = vec_perm(v_rd0, v_rd1, ((vector unsigned char)
{0, 1, 4, 5, 8, 9, 12, 13, 16, 17, 20, 21, 24, 25, 28, 29}));
vec_vsx_st((vector unsigned char)v_dst, 0, (unsigned char *)dst_addr);
src_addr += 32;
dst_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dst[i]= src[4*i]<<6;
}
}
static void rgbaToA_c_vsx(uint8_t *_dst, const uint8_t *src, const uint8_t *unused1, const uint8_t *unused2,
int width, uint32_t *unused)
{
int16_t *dst = (int16_t *)_dst;
int i, width_adj, frag_len;
uintptr_t src_addr = (uintptr_t)src;
uintptr_t dst_addr = (uintptr_t)dst;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 3;
width_adj = width_adj << 3;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 8) {
vector int v_rd0 = vec_vsx_ld(0, (int *)src_addr);
vector int v_rd1 = vec_vsx_ld(0, (int *)(src_addr + 16));
v_rd0 = vec_sld(v_rd0, v_rd0, 13);
v_rd1 = vec_sld(v_rd1, v_rd1, 13);
v_rd0 = vec_and(v_rd0, vec_splats(0x0ff));
v_rd1 = vec_and(v_rd1, vec_splats(0x0ff));
v_rd0 = vec_sl(v_rd0, vec_splats((unsigned)6));
v_rd1 = vec_sl(v_rd1, vec_splats((unsigned)6));
vector int v_dst = vec_perm(v_rd0, v_rd1, ((vector unsigned char)
{0, 1, 4, 5, 8, 9, 12, 13, 16, 17, 20, 21, 24, 25, 28, 29}));
vec_vsx_st((vector unsigned char)v_dst, 0, (unsigned char *)dst_addr);
src_addr += 32;
dst_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dst[i]= src[4*i+3]<<6;
}
}
static void yuy2ToY_c_vsx(uint8_t *dst, const uint8_t *src, const uint8_t *unused1, const uint8_t *unused2, int width,
uint32_t *unused)
{
int i, width_adj, frag_len;
uintptr_t src_addr = (uintptr_t)src;
uintptr_t dst_addr = (uintptr_t)dst;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 4;
width_adj = width_adj << 4;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 16) {
vector unsigned char v_rd0 = vec_vsx_ld(0, (unsigned char *)src_addr);
vector unsigned char v_rd1 = vec_vsx_ld(0, (unsigned char *)(src_addr + 16));
vector unsigned char v_dst = vec_perm(v_rd0, v_rd1, ((vector unsigned char)
{0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30}));
vec_vsx_st((vector unsigned char)v_dst, 0, (unsigned char *)dst_addr);
src_addr += 32;
dst_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dst[i] = src[2 * i];
}
}
static void yuy2ToUV_c_vsx(uint8_t *dstU, uint8_t *dstV, const uint8_t *unused0, const uint8_t *src1,
const uint8_t *src2, int width, uint32_t *unused)
{
int i, width_adj, frag_len;
uintptr_t src1_addr = (uintptr_t)src1;
uintptr_t dstu_addr = (uintptr_t)dstU;
uintptr_t dstv_addr = (uintptr_t)dstV;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 4;
width_adj = width_adj << 4;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 16) {
vector unsigned char v_src1_0 = vec_vsx_ld(0, (unsigned char *)src1_addr);
vector unsigned char v_src1_1 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 16));
vector unsigned char v_src1_2 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 32));
vector unsigned char v_src1_3 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 48));
vector unsigned char v_dstu = vec_perm(v_src1_0, v_src1_1,
((vector unsigned char)
{1, 5, 9, 13, 17, 21, 25, 29, 1, 5, 9, 13, 17, 21, 25, 29}));
vector unsigned char v_dstv = vec_perm(v_src1_0, v_src1_1,
((vector unsigned char)
{3, 7, 11, 15, 19, 23, 27, 31, 1, 5, 9, 13, 17, 21, 25, 29}));
v_dstu = vec_perm(v_dstu, v_src1_2,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 17, 21, 25, 29, 17, 21, 25, 29}));
v_dstv = vec_perm(v_dstv, v_src1_2,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 19, 23, 27, 31, 17, 21, 25, 29}));
v_dstu = vec_perm(v_dstu, v_src1_3,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 17, 21, 25, 29}));
v_dstv = vec_perm(v_dstv, v_src1_3,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19, 23, 27, 31}));
vec_vsx_st((vector unsigned char)v_dstu, 0, (unsigned char *)dstu_addr);
vec_vsx_st((vector unsigned char)v_dstv, 0, (unsigned char *)dstv_addr);
src1_addr += 64;
dstu_addr += 16;
dstv_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dstU[i] = src1[4 * i + 1];
dstV[i] = src1[4 * i + 3];
}
av_assert1(src1 == src2);
}
static void yvy2ToUV_c_vsx(uint8_t *dstU, uint8_t *dstV, const uint8_t *unused0, const uint8_t *src1,
const uint8_t *src2, int width, uint32_t *unused)
{
int i, width_adj, frag_len;
uintptr_t src1_addr = (uintptr_t)src1;
uintptr_t dstu_addr = (uintptr_t)dstU;
uintptr_t dstv_addr = (uintptr_t)dstV;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 4;
width_adj = width_adj << 4;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 16) {
vector unsigned char v_src1_0 = vec_vsx_ld(0, (unsigned char *)src1_addr);
vector unsigned char v_src1_1 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 16));
vector unsigned char v_src1_2 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 32));
vector unsigned char v_src1_3 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 48));
vector unsigned char v_dstv = vec_perm(v_src1_0, v_src1_1,
((vector unsigned char)
{1, 5, 9, 13, 17, 21, 25, 29, 1, 5, 9, 13, 17, 21, 25, 29}));
vector unsigned char v_dstu = vec_perm(v_src1_0, v_src1_1,
((vector unsigned char)
{3, 7, 11, 15, 19, 23, 27, 31, 1, 5, 9, 13, 17, 21, 25, 29}));
v_dstv = vec_perm(v_dstv, v_src1_2,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 17, 21, 25, 29, 17, 21, 25, 29}));
v_dstu = vec_perm(v_dstu, v_src1_2,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 19, 23, 27, 31, 17, 21, 25, 29}));
v_dstv = vec_perm(v_dstv, v_src1_3,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 17, 21, 25, 29}));
v_dstu = vec_perm(v_dstu, v_src1_3,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 19, 23, 27, 31}));
vec_vsx_st((vector unsigned char)v_dstu, 0, (unsigned char *)dstu_addr);
vec_vsx_st((vector unsigned char)v_dstv, 0, (unsigned char *)dstv_addr);
src1_addr += 64;
dstu_addr += 16;
dstv_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dstV[i] = src1[4 * i + 1];
dstU[i] = src1[4 * i + 3];
}
av_assert1(src1 == src2);
}
static void uyvyToY_c_vsx(uint8_t *dst, const uint8_t *src, const uint8_t *unused1, const uint8_t *unused2, int width,
uint32_t *unused)
{
int i, width_adj, frag_len;
uintptr_t src_addr = (uintptr_t)src;
uintptr_t dst_addr = (uintptr_t)dst;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 4;
width_adj = width_adj << 4;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 16) {
vector unsigned char v_rd0 = vec_vsx_ld(0, (unsigned char *)src_addr);
vector unsigned char v_rd1 = vec_vsx_ld(0, (unsigned char *)(src_addr + 16));
vector unsigned char v_dst = vec_perm(v_rd0, v_rd1, ((vector unsigned char)
{1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31}));
vec_vsx_st((vector unsigned char)v_dst, 0, (unsigned char *)dst_addr);
src_addr += 32;
dst_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dst[i] = src[2 * i + 1];
}
}
static void uyvyToUV_c_vsx(uint8_t *dstU, uint8_t *dstV, const uint8_t *unused0, const uint8_t *src1,
const uint8_t *src2, int width, uint32_t *unused)
{
int i, width_adj, frag_len;
uintptr_t src1_addr = (uintptr_t)src1;
uintptr_t dstu_addr = (uintptr_t)dstU;
uintptr_t dstv_addr = (uintptr_t)dstV;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 4;
width_adj = width_adj << 4;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 16) {
vector unsigned char v_src1_0 = vec_vsx_ld(0, (unsigned char *)src1_addr);
vector unsigned char v_src1_1 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 16));
vector unsigned char v_src1_2 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 32));
vector unsigned char v_src1_3 = vec_vsx_ld(0, (unsigned char *)(src1_addr + 48));
vector unsigned char v_dstu = vec_perm(v_src1_0, v_src1_1,
((vector unsigned char)
{0, 4, 8, 12, 16, 20, 24, 28, 1, 5, 9, 13, 17, 21, 25, 29}));
vector unsigned char v_dstv = vec_perm(v_src1_0, v_src1_1,
((vector unsigned char)
{2, 6, 10, 14, 18, 22, 26, 30, 1, 5, 9, 13, 17, 21, 25, 29}));
v_dstu = vec_perm(v_dstu, v_src1_2,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 16, 20, 24, 28, 17, 21, 25, 29}));
v_dstv = vec_perm(v_dstv, v_src1_2,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 18, 22, 26, 30, 17, 21, 25, 29}));
v_dstu = vec_perm(v_dstu, v_src1_3,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 16, 20, 24, 28}));
v_dstv = vec_perm(v_dstv, v_src1_3,((vector unsigned char)
{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 18, 22, 26, 30}));
vec_vsx_st((vector unsigned char)v_dstu, 0, (unsigned char *)dstu_addr);
vec_vsx_st((vector unsigned char)v_dstv, 0, (unsigned char *)dstv_addr);
src1_addr += 64;
dstu_addr += 16;
dstv_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dstU[i] = src1[4 * i + 0];
dstV[i] = src1[4 * i + 2];
}
av_assert1(src1 == src2);
}
static av_always_inline void nvXXtoUV_c_vsx(uint8_t *dst1, uint8_t *dst2, const uint8_t *src, int width)
{
int i, width_adj, frag_len;
uintptr_t src_addr = (uintptr_t)src;
uintptr_t dst1_addr = (uintptr_t)dst1;
uintptr_t dst2_addr = (uintptr_t)dst2;
// compute integral number of vector-length items and length of final fragment
width_adj = width >> 4;
width_adj = width_adj << 4;
frag_len = width - width_adj;
for ( i = 0; i < width_adj; i += 16) {
vector unsigned char v_rd0 = vec_vsx_ld(0, (unsigned char *)src_addr);
vector unsigned char v_rd1 = vec_vsx_ld(0, (unsigned char *)(src_addr + 16));
vector unsigned char v_dst1 = vec_perm(v_rd0, v_rd1, ((vector unsigned char)
{0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30}));
vector unsigned char v_dst2 = vec_perm(v_rd0, v_rd1, ((vector unsigned char)
{1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31}));
vec_vsx_st((vector unsigned char)v_dst1, 0, (unsigned char *)dst1_addr);
vec_vsx_st((vector unsigned char)v_dst2, 0, (unsigned char *)dst2_addr);
src_addr += 32;
dst1_addr += 16;
dst2_addr += 16;
}
for (i=width_adj; i< width_adj + frag_len; i++) {
dst1[i] = src[2 * i + 0];
dst2[i] = src[2 * i + 1];
}
}
static void nv12ToUV_c_vsx(uint8_t *dstU, uint8_t *dstV,
const uint8_t *unused0, const uint8_t *src1, const uint8_t *src2,
int width, uint32_t *unused)
{
nvXXtoUV_c_vsx(dstU, dstV, src1, width);
}
static void nv21ToUV_c_vsx(uint8_t *dstU, uint8_t *dstV,
const uint8_t *unused0, const uint8_t *src1, const uint8_t *src2,
int width, uint32_t *unused)
{
nvXXtoUV_c_vsx(dstV, dstU, src1, width);
}
#endif /* HAVE_VSX */
av_cold void ff_sws_init_input_funcs_vsx(SwsContext *c)
{
#if HAVE_VSX
enum AVPixelFormat srcFormat = c->srcFormat;
switch (srcFormat) {
case AV_PIX_FMT_YUYV422:
c->chrToYV12 = yuy2ToUV_c_vsx;
break;
case AV_PIX_FMT_YVYU422:
c->chrToYV12 = yvy2ToUV_c_vsx;
break;
case AV_PIX_FMT_UYVY422:
c->chrToYV12 = uyvyToUV_c_vsx;
break;
case AV_PIX_FMT_NV12:
c->chrToYV12 = nv12ToUV_c_vsx;
break;
case AV_PIX_FMT_NV21:
c->chrToYV12 = nv21ToUV_c_vsx;
break;
}
switch (srcFormat) {
case AV_PIX_FMT_YUYV422:
case AV_PIX_FMT_YVYU422:
case AV_PIX_FMT_YA8:
c->lumToYV12 = yuy2ToY_c_vsx;
break;
case AV_PIX_FMT_UYVY422:
c->lumToYV12 = uyvyToY_c_vsx;
break;
}
if (c->needAlpha) {
switch (srcFormat) {
case AV_PIX_FMT_BGRA:
case AV_PIX_FMT_RGBA:
c->alpToYV12 = rgbaToA_c_vsx;
break;
case AV_PIX_FMT_ABGR:
case AV_PIX_FMT_ARGB:
c->alpToYV12 = abgrToA_c_vsx;
break;
case AV_PIX_FMT_YA8:
c->alpToYV12 = uyvyToY_c_vsx;
break;
}
}
#endif /* HAVE_VSX */
}
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