mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
284 lines
8.6 KiB
284 lines
8.6 KiB
/* |
|
* 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_ALTIVEC |
|
#if HAVE_BIGENDIAN |
|
#define vzero vec_splat_s32(0) |
|
|
|
#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;\ |
|
} |
|
|
|
#define yuv2planeX_8(d1, d2, l1, src, x, perm, filter) do {\ |
|
vector signed short ls;\ |
|
vector signed int vf1, vf2, i1, i2;\ |
|
GET_LS(l1, x, perm, src);\ |
|
i1 = vec_mule(filter, ls);\ |
|
i2 = vec_mulo(filter, ls);\ |
|
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) {\ |
|
vector unsigned char perm0 = vec_lvsl(joffset, f);\ |
|
vf = vec_ld(joffset, f);\ |
|
vf = vec_perm(vf, vf, perm0);\ |
|
} |
|
#define LOAD_L1(ll1,s,p){\ |
|
p = vec_lvsl(xoffset, s);\ |
|
ll1 = vec_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 = vec_ld(a<< 3, f);\ |
|
if ((a << 3) % 16)\ |
|
vf = vec_mergel(vf, (vector signed short)vzero);\ |
|
else\ |
|
vf = vec_mergeh(vf, (vector signed short)vzero);\ |
|
} |
|
#define FIRST_LOAD(sv, pos, s, per) {\ |
|
sv = vec_ld(pos, s);\ |
|
per = vec_lvsl(pos, s);\ |
|
} |
|
#define UPDATE_PTR(s0, d0, s1, d1) {\ |
|
d0 = s0;\ |
|
d1 = s1;\ |
|
} |
|
#define LOAD_SRCV(pos, a, s, per, v0, v1, vf) {\ |
|
v1 = vec_ld(pos + a + 16, s);\ |
|
vf = vec_perm(v0, v1, per);\ |
|
} |
|
#define LOAD_SRCV8(pos, a, s, per, v0, v1, vf) {\ |
|
if ((((uintptr_t)s + pos) % 16) > 8) {\ |
|
v1 = vec_ld(pos + a + 16, s);\ |
|
}\ |
|
vf = vec_perm(v0, src_v1, per);\ |
|
} |
|
#define GET_VFD(a, b, f, vf0, vf1, per, vf, off) {\ |
|
vf1 = vec_ld((a * 2 * filterSize) + (b * 2) + 16 + off, f);\ |
|
vf = vec_perm(vf0, vf1, per);\ |
|
} |
|
|
|
#define FUNC(name) name ## _altivec |
|
#include "swscale_ppc_template.c" |
|
#undef FUNC |
|
|
|
#undef vzero |
|
|
|
#endif /* HAVE_BIGENDIAN */ |
|
|
|
#define SHIFT 3 |
|
|
|
#define get_pixel(val, bias, signedness) \ |
|
(bias + av_clip_ ## signedness ## 16(val >> shift)) |
|
|
|
static void |
|
yuv2plane1_float_u(const int32_t *src, float *dest, int dstW, int start) |
|
{ |
|
static const int shift = 3; |
|
static const float float_mult = 1.0f / 65535.0f; |
|
int i, val; |
|
uint16_t val_uint; |
|
|
|
for (i = start; i < dstW; ++i){ |
|
val = src[i] + (1 << (shift - 1)); |
|
val_uint = get_pixel(val, 0, uint); |
|
dest[i] = float_mult * (float)val_uint; |
|
} |
|
} |
|
|
|
static void |
|
yuv2plane1_float_bswap_u(const int32_t *src, uint32_t *dest, int dstW, int start) |
|
{ |
|
static const int shift = 3; |
|
static const float float_mult = 1.0f / 65535.0f; |
|
int i, val; |
|
uint16_t val_uint; |
|
|
|
for (i = start; i < dstW; ++i){ |
|
val = src[i] + (1 << (shift - 1)); |
|
val_uint = get_pixel(val, 0, uint); |
|
dest[i] = av_bswap32(av_float2int(float_mult * (float)val_uint)); |
|
} |
|
} |
|
|
|
static void yuv2plane1_float_altivec(const int32_t *src, float *dest, int dstW) |
|
{ |
|
const int dst_u = -(uintptr_t)dest & 3; |
|
const int add = (1 << (SHIFT - 1)); |
|
const int clip = (1 << 16) - 1; |
|
const float fmult = 1.0f / 65535.0f; |
|
const vec_u32 vadd = (vec_u32) {add, add, add, add}; |
|
const vec_u32 vshift = (vec_u32) vec_splat_u32(SHIFT); |
|
const vec_u32 vlargest = (vec_u32) {clip, clip, clip, clip}; |
|
const vec_f vmul = (vec_f) {fmult, fmult, fmult, fmult}; |
|
const vec_f vzero = (vec_f) {0, 0, 0, 0}; |
|
vec_u32 v; |
|
vec_f vd; |
|
int i; |
|
|
|
yuv2plane1_float_u(src, dest, dst_u, 0); |
|
|
|
for (i = dst_u; i < dstW - 3; i += 4) { |
|
v = vec_ld(0, (const uint32_t *) &src[i]); |
|
v = vec_add(v, vadd); |
|
v = vec_sr(v, vshift); |
|
v = vec_min(v, vlargest); |
|
|
|
vd = vec_ctf(v, 0); |
|
vd = vec_madd(vd, vmul, vzero); |
|
|
|
vec_st(vd, 0, &dest[i]); |
|
} |
|
|
|
yuv2plane1_float_u(src, dest, dstW, i); |
|
} |
|
|
|
static void yuv2plane1_float_bswap_altivec(const int32_t *src, uint32_t *dest, int dstW) |
|
{ |
|
const int dst_u = -(uintptr_t)dest & 3; |
|
const int add = (1 << (SHIFT - 1)); |
|
const int clip = (1 << 16) - 1; |
|
const float fmult = 1.0f / 65535.0f; |
|
const vec_u32 vadd = (vec_u32) {add, add, add, add}; |
|
const vec_u32 vshift = (vec_u32) vec_splat_u32(SHIFT); |
|
const vec_u32 vlargest = (vec_u32) {clip, clip, clip, clip}; |
|
const vec_f vmul = (vec_f) {fmult, fmult, fmult, fmult}; |
|
const vec_f vzero = (vec_f) {0, 0, 0, 0}; |
|
const vec_u32 vswapbig = (vec_u32) {16, 16, 16, 16}; |
|
const vec_u16 vswapsmall = vec_splat_u16(8); |
|
vec_u32 v; |
|
vec_f vd; |
|
int i; |
|
|
|
yuv2plane1_float_bswap_u(src, dest, dst_u, 0); |
|
|
|
for (i = dst_u; i < dstW - 3; i += 4) { |
|
v = vec_ld(0, (const uint32_t *) &src[i]); |
|
v = vec_add(v, vadd); |
|
v = vec_sr(v, vshift); |
|
v = vec_min(v, vlargest); |
|
|
|
vd = vec_ctf(v, 0); |
|
vd = vec_madd(vd, vmul, vzero); |
|
|
|
vd = (vec_f) vec_rl((vec_u32) vd, vswapbig); |
|
vd = (vec_f) vec_rl((vec_u16) vd, vswapsmall); |
|
|
|
vec_st(vd, 0, (float *) &dest[i]); |
|
} |
|
|
|
yuv2plane1_float_bswap_u(src, dest, dstW, i); |
|
} |
|
|
|
#define yuv2plane1_float(template, dest_type, BE_LE) \ |
|
static void yuv2plane1_float ## BE_LE ## _altivec(const int16_t *src, uint8_t *dest, \ |
|
int dstW, \ |
|
const uint8_t *dither, int offset) \ |
|
{ \ |
|
template((const int32_t *)src, (dest_type *)dest, dstW); \ |
|
} |
|
|
|
#if HAVE_BIGENDIAN |
|
yuv2plane1_float(yuv2plane1_float_altivec, float, BE) |
|
yuv2plane1_float(yuv2plane1_float_bswap_altivec, uint32_t, LE) |
|
#else |
|
yuv2plane1_float(yuv2plane1_float_altivec, float, LE) |
|
yuv2plane1_float(yuv2plane1_float_bswap_altivec, uint32_t, BE) |
|
#endif |
|
|
|
#endif /* HAVE_ALTIVEC */ |
|
|
|
av_cold void ff_sws_init_swscale_ppc(SwsInternal *c) |
|
{ |
|
#if HAVE_ALTIVEC |
|
enum AVPixelFormat dstFormat = c->dstFormat; |
|
|
|
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_real_altivec; |
|
} |
|
if (!is16BPS(dstFormat) && !isNBPS(dstFormat) && !isSemiPlanarYUV(dstFormat) && |
|
dstFormat != AV_PIX_FMT_GRAYF32BE && dstFormat != AV_PIX_FMT_GRAYF32LE && |
|
!c->needAlpha) { |
|
c->yuv2planeX = yuv2planeX_altivec; |
|
} |
|
#endif |
|
|
|
if (dstFormat == AV_PIX_FMT_GRAYF32BE) { |
|
c->yuv2plane1 = yuv2plane1_floatBE_altivec; |
|
} else if (dstFormat == AV_PIX_FMT_GRAYF32LE) { |
|
c->yuv2plane1 = yuv2plane1_floatLE_altivec; |
|
} |
|
|
|
/* The following list of supported dstFormat values should |
|
* match what's found in the body of ff_yuv2packedX_altivec() */ |
|
if (!(c->flags & (SWS_BITEXACT | SWS_FULL_CHR_H_INT)) && !c->needAlpha) { |
|
switch (c->dstFormat) { |
|
case AV_PIX_FMT_ABGR: |
|
c->yuv2packedX = ff_yuv2abgr_X_altivec; |
|
break; |
|
case AV_PIX_FMT_BGRA: |
|
c->yuv2packedX = ff_yuv2bgra_X_altivec; |
|
break; |
|
case AV_PIX_FMT_ARGB: |
|
c->yuv2packedX = ff_yuv2argb_X_altivec; |
|
break; |
|
case AV_PIX_FMT_RGBA: |
|
c->yuv2packedX = ff_yuv2rgba_X_altivec; |
|
break; |
|
case AV_PIX_FMT_BGR24: |
|
c->yuv2packedX = ff_yuv2bgr24_X_altivec; |
|
break; |
|
case AV_PIX_FMT_RGB24: |
|
c->yuv2packedX = ff_yuv2rgb24_X_altivec; |
|
break; |
|
} |
|
} |
|
#endif /* HAVE_ALTIVEC */ |
|
|
|
ff_sws_init_swscale_vsx(c); |
|
}
|
|
|