This source file includes following definitions.
- yuv2plane1_float_u
- yuv2plane1_float_bswap_u
- yuv2plane1_float_altivec
- yuv2plane1_float_bswap_altivec
- yuv2plane1_float
#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);\
}
#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
#define output_pixel(pos, val, bias, signedness) \
if (big_endian) { \
AV_WB16(pos, bias + av_clip_ ## signedness ## 16(val >> shift)); \
} else { \
AV_WL16(pos, 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 big_endian = HAVE_BIGENDIAN;
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));
output_pixel(&val_uint, 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 big_endian = HAVE_BIGENDIAN;
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));
output_pixel(&val_uint, 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 shift = 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 shift = 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
av_cold void ff_sws_init_swscale_ppc(SwsContext *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;
}
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
ff_sws_init_swscale_vsx(c);
}