mirror of
https://github.com/xenia-project/FFmpeg.git
synced 2024-11-24 03:59:43 +00:00
172b0e2e88
* commit 'ea7ee4b4e381e0fa731458de0cbf740430eeb013': ppc: Centralize compiler-specific altivec.h #include handling in one place Merged-by: Clément Bœsch <u@pkh.me>
362 lines
12 KiB
C
362 lines
12 KiB
C
/*
|
|
* VP8 compatible video decoder
|
|
*
|
|
* Copyright (C) 2010 David Conrad
|
|
*
|
|
* 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 "config.h"
|
|
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/mem.h"
|
|
#include "libavutil/ppc/cpu.h"
|
|
#include "libavutil/ppc/util_altivec.h"
|
|
|
|
#include "libavcodec/vp8dsp.h"
|
|
|
|
#include "hpeldsp_altivec.h"
|
|
|
|
#if HAVE_ALTIVEC
|
|
#define REPT4(...) { __VA_ARGS__, __VA_ARGS__, __VA_ARGS__, __VA_ARGS__ }
|
|
|
|
// h subpel filter uses msum to multiply+add 4 pixel taps at once
|
|
static const vec_s8 h_subpel_filters_inner[7] =
|
|
{
|
|
REPT4( -6, 123, 12, -1),
|
|
REPT4(-11, 108, 36, -8),
|
|
REPT4( -9, 93, 50, -6),
|
|
REPT4(-16, 77, 77, -16),
|
|
REPT4( -6, 50, 93, -9),
|
|
REPT4( -8, 36, 108, -11),
|
|
REPT4( -1, 12, 123, -6),
|
|
};
|
|
|
|
// for 6tap filters, these are the outer two taps
|
|
// The zeros mask off pixels 4-7 when filtering 0-3
|
|
// and vice-versa
|
|
static const vec_s8 h_subpel_filters_outer[3] =
|
|
{
|
|
REPT4(0, 0, 2, 1),
|
|
REPT4(0, 0, 3, 3),
|
|
REPT4(0, 0, 1, 2),
|
|
};
|
|
|
|
#define LOAD_H_SUBPEL_FILTER(i) \
|
|
vec_s8 filter_inner = h_subpel_filters_inner[i]; \
|
|
vec_s8 filter_outerh = h_subpel_filters_outer[(i)>>1]; \
|
|
vec_s8 filter_outerl = vec_sld(filter_outerh, filter_outerh, 2)
|
|
|
|
#if HAVE_BIGENDIAN
|
|
#define GET_PIXHL(offset) \
|
|
a = vec_ld((offset)-is6tap-1, src); \
|
|
b = vec_ld((offset)-is6tap-1+15, src); \
|
|
pixh = vec_perm(a, b, permh##offset); \
|
|
pixl = vec_perm(a, b, perml##offset)
|
|
|
|
#define GET_OUTER(offset) outer = vec_perm(a, b, perm_6tap##offset)
|
|
#else
|
|
#define GET_PIXHL(offset) \
|
|
a = vec_vsx_ld((offset)-is6tap-1, src); \
|
|
pixh = vec_perm(a, a, perm_inner); \
|
|
pixl = vec_perm(a, a, vec_add(perm_inner, vec_splat_u8(4)))
|
|
|
|
#define GET_OUTER(offset) outer = vec_perm(a, a, perm_outer)
|
|
#endif
|
|
|
|
#define FILTER_H(dstv, off) \
|
|
GET_PIXHL(off); \
|
|
filth = vec_msum(filter_inner, pixh, c64); \
|
|
filtl = vec_msum(filter_inner, pixl, c64); \
|
|
\
|
|
if (is6tap) { \
|
|
GET_OUTER(off); \
|
|
filth = vec_msum(filter_outerh, outer, filth); \
|
|
filtl = vec_msum(filter_outerl, outer, filtl); \
|
|
} \
|
|
if (w == 4) \
|
|
filtl = filth; /* discard pixels 4-7 */ \
|
|
dstv = vec_packs(filth, filtl); \
|
|
dstv = vec_sra(dstv, c7)
|
|
|
|
static av_always_inline
|
|
void put_vp8_epel_h_altivec_core(uint8_t *dst, ptrdiff_t dst_stride,
|
|
uint8_t *src, ptrdiff_t src_stride,
|
|
int h, int mx, int w, int is6tap)
|
|
{
|
|
LOAD_H_SUBPEL_FILTER(mx-1);
|
|
#if HAVE_BIGENDIAN
|
|
vec_u8 align_vec0, align_vec8, permh0, permh8;
|
|
vec_u8 perm_6tap0, perm_6tap8, perml0, perml8;
|
|
vec_u8 b;
|
|
#endif
|
|
vec_u8 filt, a, pixh, pixl, outer;
|
|
vec_s16 f16h, f16l;
|
|
vec_s32 filth, filtl;
|
|
|
|
vec_u8 perm_inner6 = { 1,2,3,4, 2,3,4,5, 3,4,5,6, 4,5,6,7 };
|
|
vec_u8 perm_inner4 = { 0,1,2,3, 1,2,3,4, 2,3,4,5, 3,4,5,6 };
|
|
vec_u8 perm_inner = is6tap ? perm_inner6 : perm_inner4;
|
|
vec_u8 perm_outer = { 4,9, 0,5, 5,10, 1,6, 6,11, 2,7, 7,12, 3,8 };
|
|
vec_s32 c64 = vec_sl(vec_splat_s32(1), vec_splat_u32(6));
|
|
vec_u16 c7 = vec_splat_u16(7);
|
|
|
|
#if HAVE_BIGENDIAN
|
|
align_vec0 = vec_lvsl( -is6tap-1, src);
|
|
align_vec8 = vec_lvsl(8-is6tap-1, src);
|
|
|
|
permh0 = vec_perm(align_vec0, align_vec0, perm_inner);
|
|
permh8 = vec_perm(align_vec8, align_vec8, perm_inner);
|
|
perm_inner = vec_add(perm_inner, vec_splat_u8(4));
|
|
perml0 = vec_perm(align_vec0, align_vec0, perm_inner);
|
|
perml8 = vec_perm(align_vec8, align_vec8, perm_inner);
|
|
perm_6tap0 = vec_perm(align_vec0, align_vec0, perm_outer);
|
|
perm_6tap8 = vec_perm(align_vec8, align_vec8, perm_outer);
|
|
#endif
|
|
|
|
while (h --> 0) {
|
|
FILTER_H(f16h, 0);
|
|
|
|
if (w == 16) {
|
|
FILTER_H(f16l, 8);
|
|
filt = vec_packsu(f16h, f16l);
|
|
vec_st(filt, 0, dst);
|
|
} else {
|
|
filt = vec_packsu(f16h, f16h);
|
|
vec_ste((vec_u32)filt, 0, (uint32_t*)dst);
|
|
if (w == 8)
|
|
vec_ste((vec_u32)filt, 4, (uint32_t*)dst);
|
|
}
|
|
src += src_stride;
|
|
dst += dst_stride;
|
|
}
|
|
}
|
|
|
|
// v subpel filter does a simple vertical multiply + add
|
|
static const vec_u8 v_subpel_filters[7] =
|
|
{
|
|
{ 0, 6, 123, 12, 1, 0 },
|
|
{ 2, 11, 108, 36, 8, 1 },
|
|
{ 0, 9, 93, 50, 6, 0 },
|
|
{ 3, 16, 77, 77, 16, 3 },
|
|
{ 0, 6, 50, 93, 9, 0 },
|
|
{ 1, 8, 36, 108, 11, 2 },
|
|
{ 0, 1, 12, 123, 6, 0 },
|
|
};
|
|
|
|
#define LOAD_V_SUBPEL_FILTER(i) \
|
|
vec_u8 subpel_filter = v_subpel_filters[i]; \
|
|
vec_u8 f0 = vec_splat(subpel_filter, 0); \
|
|
vec_u8 f1 = vec_splat(subpel_filter, 1); \
|
|
vec_u8 f2 = vec_splat(subpel_filter, 2); \
|
|
vec_u8 f3 = vec_splat(subpel_filter, 3); \
|
|
vec_u8 f4 = vec_splat(subpel_filter, 4); \
|
|
vec_u8 f5 = vec_splat(subpel_filter, 5)
|
|
|
|
#define FILTER_V(dstv, vec_mul) \
|
|
s1f = (vec_s16)vec_mul(s1, f1); \
|
|
s2f = (vec_s16)vec_mul(s2, f2); \
|
|
s3f = (vec_s16)vec_mul(s3, f3); \
|
|
s4f = (vec_s16)vec_mul(s4, f4); \
|
|
s2f = vec_subs(s2f, s1f); \
|
|
s3f = vec_subs(s3f, s4f); \
|
|
if (is6tap) { \
|
|
s0f = (vec_s16)vec_mul(s0, f0); \
|
|
s5f = (vec_s16)vec_mul(s5, f5); \
|
|
s2f = vec_adds(s2f, s0f); \
|
|
s3f = vec_adds(s3f, s5f); \
|
|
} \
|
|
dstv = vec_adds(s2f, s3f); \
|
|
dstv = vec_adds(dstv, c64); \
|
|
dstv = vec_sra(dstv, c7)
|
|
|
|
#if HAVE_BIGENDIAN
|
|
#define LOAD_HL(off, s, perm) load_with_perm_vec(off, s, perm)
|
|
#else
|
|
#define LOAD_HL(off, s, perm) vec_mergeh(vec_vsx_ld(off,s), vec_vsx_ld(off+8,s))
|
|
#endif
|
|
|
|
static av_always_inline
|
|
void put_vp8_epel_v_altivec_core(uint8_t *dst, ptrdiff_t dst_stride,
|
|
uint8_t *src, ptrdiff_t src_stride,
|
|
int h, int my, int w, int is6tap)
|
|
{
|
|
LOAD_V_SUBPEL_FILTER(my-1);
|
|
vec_u8 s0, s1, s2, s3, s4, s5, filt, align_vech, perm_vec, align_vecl;
|
|
vec_s16 s0f, s1f, s2f, s3f, s4f, s5f, f16h, f16l;
|
|
vec_s16 c64 = vec_sl(vec_splat_s16(1), vec_splat_u16(6));
|
|
vec_u16 c7 = vec_splat_u16(7);
|
|
|
|
#if HAVE_BIGENDIAN
|
|
// we want pixels 0-7 to be in the even positions and 8-15 in the odd,
|
|
// so combine this permute with the alignment permute vector
|
|
align_vech = vec_lvsl(0, src);
|
|
align_vecl = vec_sld(align_vech, align_vech, 8);
|
|
if (w ==16)
|
|
perm_vec = vec_mergeh(align_vech, align_vecl);
|
|
else
|
|
perm_vec = vec_mergeh(align_vech, align_vech);
|
|
#endif
|
|
|
|
if (is6tap)
|
|
s0 = LOAD_HL(-2*src_stride, src, perm_vec);
|
|
s1 = LOAD_HL(-1*src_stride, src, perm_vec);
|
|
s2 = LOAD_HL( 0*src_stride, src, perm_vec);
|
|
s3 = LOAD_HL( 1*src_stride, src, perm_vec);
|
|
if (is6tap)
|
|
s4 = LOAD_HL( 2*src_stride, src, perm_vec);
|
|
|
|
src += (2+is6tap)*src_stride;
|
|
|
|
while (h --> 0) {
|
|
if (is6tap)
|
|
s5 = LOAD_HL(0, src, perm_vec);
|
|
else
|
|
s4 = LOAD_HL(0, src, perm_vec);
|
|
|
|
FILTER_V(f16h, vec_mule);
|
|
|
|
if (w == 16) {
|
|
FILTER_V(f16l, vec_mulo);
|
|
filt = vec_packsu(f16h, f16l);
|
|
vec_st(filt, 0, dst);
|
|
} else {
|
|
filt = vec_packsu(f16h, f16h);
|
|
if (w == 4)
|
|
filt = (vec_u8)vec_splat((vec_u32)filt, 0);
|
|
else
|
|
vec_ste((vec_u32)filt, 4, (uint32_t*)dst);
|
|
vec_ste((vec_u32)filt, 0, (uint32_t*)dst);
|
|
}
|
|
|
|
if (is6tap)
|
|
s0 = s1;
|
|
s1 = s2;
|
|
s2 = s3;
|
|
s3 = s4;
|
|
if (is6tap)
|
|
s4 = s5;
|
|
|
|
dst += dst_stride;
|
|
src += src_stride;
|
|
}
|
|
}
|
|
|
|
#define EPEL_FUNCS(WIDTH, TAPS) \
|
|
static av_noinline \
|
|
void put_vp8_epel ## WIDTH ## _h ## TAPS ## _altivec(uint8_t *dst, ptrdiff_t dst_stride, uint8_t *src, ptrdiff_t src_stride, int h, int mx, int my) \
|
|
{ \
|
|
put_vp8_epel_h_altivec_core(dst, dst_stride, src, src_stride, h, mx, WIDTH, TAPS == 6); \
|
|
} \
|
|
\
|
|
static av_noinline \
|
|
void put_vp8_epel ## WIDTH ## _v ## TAPS ## _altivec(uint8_t *dst, ptrdiff_t dst_stride, uint8_t *src, ptrdiff_t src_stride, int h, int mx, int my) \
|
|
{ \
|
|
put_vp8_epel_v_altivec_core(dst, dst_stride, src, src_stride, h, my, WIDTH, TAPS == 6); \
|
|
}
|
|
|
|
#define EPEL_HV(WIDTH, HTAPS, VTAPS) \
|
|
static void put_vp8_epel ## WIDTH ## _h ## HTAPS ## v ## VTAPS ## _altivec(uint8_t *dst, ptrdiff_t dstride, uint8_t *src, ptrdiff_t sstride, int h, int mx, int my) \
|
|
{ \
|
|
DECLARE_ALIGNED(16, uint8_t, tmp)[(2*WIDTH+5)*16]; \
|
|
if (VTAPS == 6) { \
|
|
put_vp8_epel ## WIDTH ## _h ## HTAPS ## _altivec(tmp, 16, src-2*sstride, sstride, h+5, mx, my); \
|
|
put_vp8_epel ## WIDTH ## _v ## VTAPS ## _altivec(dst, dstride, tmp+2*16, 16, h, mx, my); \
|
|
} else { \
|
|
put_vp8_epel ## WIDTH ## _h ## HTAPS ## _altivec(tmp, 16, src-sstride, sstride, h+4, mx, my); \
|
|
put_vp8_epel ## WIDTH ## _v ## VTAPS ## _altivec(dst, dstride, tmp+16, 16, h, mx, my); \
|
|
} \
|
|
}
|
|
|
|
EPEL_FUNCS(16,6)
|
|
EPEL_FUNCS(8, 6)
|
|
EPEL_FUNCS(8, 4)
|
|
EPEL_FUNCS(4, 6)
|
|
EPEL_FUNCS(4, 4)
|
|
|
|
EPEL_HV(16, 6,6)
|
|
EPEL_HV(8, 6,6)
|
|
EPEL_HV(8, 4,6)
|
|
EPEL_HV(8, 6,4)
|
|
EPEL_HV(8, 4,4)
|
|
EPEL_HV(4, 6,6)
|
|
EPEL_HV(4, 4,6)
|
|
EPEL_HV(4, 6,4)
|
|
EPEL_HV(4, 4,4)
|
|
|
|
static void put_vp8_pixels16_altivec(uint8_t *dst, ptrdiff_t dstride, uint8_t *src, ptrdiff_t sstride, int h, int mx, int my)
|
|
{
|
|
register vector unsigned char perm;
|
|
int i;
|
|
register ptrdiff_t dstride2 = dstride << 1, sstride2 = sstride << 1;
|
|
register ptrdiff_t dstride3 = dstride2 + dstride, sstride3 = sstride + sstride2;
|
|
register ptrdiff_t dstride4 = dstride << 2, sstride4 = sstride << 2;
|
|
|
|
#if HAVE_BIGENDIAN
|
|
perm = vec_lvsl(0, src);
|
|
#endif
|
|
// hand-unrolling the loop by 4 gains about 15%
|
|
// mininum execution time goes from 74 to 60 cycles
|
|
// it's faster than -funroll-loops, but using
|
|
// -funroll-loops w/ this is bad - 74 cycles again.
|
|
// all this is on a 7450, tuning for the 7450
|
|
for (i = 0; i < h; i += 4) {
|
|
vec_st(load_with_perm_vec(0, src, perm), 0, dst);
|
|
vec_st(load_with_perm_vec(sstride, src, perm), dstride, dst);
|
|
vec_st(load_with_perm_vec(sstride2, src, perm), dstride2, dst);
|
|
vec_st(load_with_perm_vec(sstride3, src, perm), dstride3, dst);
|
|
src += sstride4;
|
|
dst += dstride4;
|
|
}
|
|
}
|
|
|
|
#endif /* HAVE_ALTIVEC */
|
|
|
|
|
|
av_cold void ff_vp78dsp_init_ppc(VP8DSPContext *c)
|
|
{
|
|
#if HAVE_ALTIVEC
|
|
if (!PPC_ALTIVEC(av_get_cpu_flags()))
|
|
return;
|
|
|
|
c->put_vp8_epel_pixels_tab[0][0][0] = put_vp8_pixels16_altivec;
|
|
c->put_vp8_epel_pixels_tab[0][0][2] = put_vp8_epel16_h6_altivec;
|
|
c->put_vp8_epel_pixels_tab[0][2][0] = put_vp8_epel16_v6_altivec;
|
|
c->put_vp8_epel_pixels_tab[0][2][2] = put_vp8_epel16_h6v6_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[1][0][2] = put_vp8_epel8_h6_altivec;
|
|
c->put_vp8_epel_pixels_tab[1][2][0] = put_vp8_epel8_v6_altivec;
|
|
c->put_vp8_epel_pixels_tab[1][0][1] = put_vp8_epel8_h4_altivec;
|
|
c->put_vp8_epel_pixels_tab[1][1][0] = put_vp8_epel8_v4_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[1][2][2] = put_vp8_epel8_h6v6_altivec;
|
|
c->put_vp8_epel_pixels_tab[1][1][1] = put_vp8_epel8_h4v4_altivec;
|
|
c->put_vp8_epel_pixels_tab[1][1][2] = put_vp8_epel8_h6v4_altivec;
|
|
c->put_vp8_epel_pixels_tab[1][2][1] = put_vp8_epel8_h4v6_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][0][2] = put_vp8_epel4_h6_altivec;
|
|
c->put_vp8_epel_pixels_tab[2][2][0] = put_vp8_epel4_v6_altivec;
|
|
c->put_vp8_epel_pixels_tab[2][0][1] = put_vp8_epel4_h4_altivec;
|
|
c->put_vp8_epel_pixels_tab[2][1][0] = put_vp8_epel4_v4_altivec;
|
|
|
|
c->put_vp8_epel_pixels_tab[2][2][2] = put_vp8_epel4_h6v6_altivec;
|
|
c->put_vp8_epel_pixels_tab[2][1][1] = put_vp8_epel4_h4v4_altivec;
|
|
c->put_vp8_epel_pixels_tab[2][1][2] = put_vp8_epel4_h6v4_altivec;
|
|
c->put_vp8_epel_pixels_tab[2][2][1] = put_vp8_epel4_h4v6_altivec;
|
|
#endif /* HAVE_ALTIVEC */
|
|
}
|