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FFmpeg/libavcodec/alpha/hpeldsp_alpha.c

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/*
* Alpha optimized DSP utils
* Copyright (c) 2002 Falk Hueffner <falk@debian.org>
*
* 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 "libavutil/attributes.h"
#include "libavcodec/hpeldsp.h"
#include "hpeldsp_alpha.h"
#include "asm.h"
static inline uint64_t avg2_no_rnd(uint64_t a, uint64_t b)
{
return (a & b) + (((a ^ b) & BYTE_VEC(0xfe)) >> 1);
}
static inline uint64_t avg2(uint64_t a, uint64_t b)
{
return (a | b) - (((a ^ b) & BYTE_VEC(0xfe)) >> 1);
}
#if 0
/* The XY2 routines basically utilize this scheme, but reuse parts in
each iteration. */
static inline uint64_t avg4(uint64_t l1, uint64_t l2, uint64_t l3, uint64_t l4)
{
uint64_t r1 = ((l1 & ~BYTE_VEC(0x03)) >> 2)
+ ((l2 & ~BYTE_VEC(0x03)) >> 2)
+ ((l3 & ~BYTE_VEC(0x03)) >> 2)
+ ((l4 & ~BYTE_VEC(0x03)) >> 2);
uint64_t r2 = (( (l1 & BYTE_VEC(0x03))
+ (l2 & BYTE_VEC(0x03))
+ (l3 & BYTE_VEC(0x03))
+ (l4 & BYTE_VEC(0x03))
+ BYTE_VEC(0x02)) >> 2) & BYTE_VEC(0x03);
return r1 + r2;
}
#endif
#define OP(LOAD, STORE) \
do { \
STORE(LOAD(pixels), block); \
pixels += line_size; \
block += line_size; \
} while (--h)
#define OP_X2(LOAD, STORE) \
do { \
uint64_t pix1, pix2; \
\
pix1 = LOAD(pixels); \
pix2 = pix1 >> 8 | ((uint64_t) pixels[8] << 56); \
STORE(AVG2(pix1, pix2), block); \
pixels += line_size; \
block += line_size; \
} while (--h)
#define OP_Y2(LOAD, STORE) \
do { \
uint64_t pix = LOAD(pixels); \
do { \
uint64_t next_pix; \
\
pixels += line_size; \
next_pix = LOAD(pixels); \
STORE(AVG2(pix, next_pix), block); \
block += line_size; \
pix = next_pix; \
} while (--h); \
} while (0)
#define OP_XY2(LOAD, STORE) \
do { \
uint64_t pix1 = LOAD(pixels); \
uint64_t pix2 = pix1 >> 8 | ((uint64_t) pixels[8] << 56); \
uint64_t pix_l = (pix1 & BYTE_VEC(0x03)) \
+ (pix2 & BYTE_VEC(0x03)); \
uint64_t pix_h = ((pix1 & ~BYTE_VEC(0x03)) >> 2) \
+ ((pix2 & ~BYTE_VEC(0x03)) >> 2); \
\
do { \
uint64_t npix1, npix2; \
uint64_t npix_l, npix_h; \
uint64_t avg; \
\
pixels += line_size; \
npix1 = LOAD(pixels); \
npix2 = npix1 >> 8 | ((uint64_t) pixels[8] << 56); \
npix_l = (npix1 & BYTE_VEC(0x03)) \
+ (npix2 & BYTE_VEC(0x03)); \
npix_h = ((npix1 & ~BYTE_VEC(0x03)) >> 2) \
+ ((npix2 & ~BYTE_VEC(0x03)) >> 2); \
avg = (((pix_l + npix_l + AVG4_ROUNDER) >> 2) & BYTE_VEC(0x03)) \
+ pix_h + npix_h; \
STORE(avg, block); \
\
block += line_size; \
pix_l = npix_l; \
pix_h = npix_h; \
} while (--h); \
} while (0)
#define MAKE_OP(OPNAME, SUFF, OPKIND, STORE) \
static void OPNAME ## _pixels ## SUFF ## _axp \
(uint8_t *restrict block, const uint8_t *restrict pixels, \
ptrdiff_t line_size, int h) \
{ \
if ((size_t) pixels & 0x7) { \
OPKIND(uldq, STORE); \
} else { \
OPKIND(ldq, STORE); \
} \
} \
\
static void OPNAME ## _pixels16 ## SUFF ## _axp \
(uint8_t *restrict block, const uint8_t *restrict pixels, \
ptrdiff_t line_size, int h) \
{ \
OPNAME ## _pixels ## SUFF ## _axp(block, pixels, line_size, h); \
OPNAME ## _pixels ## SUFF ## _axp(block + 8, pixels + 8, line_size, h); \
}
#define PIXOP(OPNAME, STORE) \
MAKE_OP(OPNAME, , OP, STORE) \
MAKE_OP(OPNAME, _x2, OP_X2, STORE) \
MAKE_OP(OPNAME, _y2, OP_Y2, STORE) \
MAKE_OP(OPNAME, _xy2, OP_XY2, STORE)
/* Rounding primitives. */
#define AVG2 avg2
#define AVG4 avg4
#define AVG4_ROUNDER BYTE_VEC(0x02)
#define STORE(l, b) stq(l, b)
PIXOP(put, STORE);
#undef STORE
#define STORE(l, b) stq(AVG2(l, ldq(b)), b);
PIXOP(avg, STORE);
/* Not rounding primitives. */
#undef AVG2
#undef AVG4
#undef AVG4_ROUNDER
#undef STORE
#define AVG2 avg2_no_rnd
#define AVG4 avg4_no_rnd
#define AVG4_ROUNDER BYTE_VEC(0x01)
#define STORE(l, b) stq(l, b)
PIXOP(put_no_rnd, STORE);
#undef STORE
#define STORE(l, b) stq(AVG2(l, ldq(b)), b);
PIXOP(avg_no_rnd, STORE);
static void put_pixels16_axp_asm(uint8_t *block, const uint8_t *pixels,
ptrdiff_t line_size, int h)
{
put_pixels_axp_asm(block, pixels, line_size, h);
put_pixels_axp_asm(block + 8, pixels + 8, line_size, h);
}
av_cold void ff_hpeldsp_init_alpha(HpelDSPContext *c, int flags)
{
c->put_pixels_tab[0][0] = put_pixels16_axp_asm;
c->put_pixels_tab[0][1] = put_pixels16_x2_axp;
c->put_pixels_tab[0][2] = put_pixels16_y2_axp;
c->put_pixels_tab[0][3] = put_pixels16_xy2_axp;
c->put_no_rnd_pixels_tab[0][0] = put_pixels16_axp_asm;
c->put_no_rnd_pixels_tab[0][1] = put_no_rnd_pixels16_x2_axp;
c->put_no_rnd_pixels_tab[0][2] = put_no_rnd_pixels16_y2_axp;
c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_axp;
c->avg_pixels_tab[0][0] = avg_pixels16_axp;
c->avg_pixels_tab[0][1] = avg_pixels16_x2_axp;
c->avg_pixels_tab[0][2] = avg_pixels16_y2_axp;
c->avg_pixels_tab[0][3] = avg_pixels16_xy2_axp;
c->avg_no_rnd_pixels_tab[0] = avg_no_rnd_pixels16_axp;
c->avg_no_rnd_pixels_tab[1] = avg_no_rnd_pixels16_x2_axp;
c->avg_no_rnd_pixels_tab[2] = avg_no_rnd_pixels16_y2_axp;
c->avg_no_rnd_pixels_tab[3] = avg_no_rnd_pixels16_xy2_axp;
c->put_pixels_tab[1][0] = put_pixels_axp_asm;
c->put_pixels_tab[1][1] = put_pixels_x2_axp;
c->put_pixels_tab[1][2] = put_pixels_y2_axp;
c->put_pixels_tab[1][3] = put_pixels_xy2_axp;
c->put_no_rnd_pixels_tab[1][0] = put_pixels_axp_asm;
c->put_no_rnd_pixels_tab[1][1] = put_no_rnd_pixels_x2_axp;
c->put_no_rnd_pixels_tab[1][2] = put_no_rnd_pixels_y2_axp;
c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels_xy2_axp;
c->avg_pixels_tab[1][0] = avg_pixels_axp;
c->avg_pixels_tab[1][1] = avg_pixels_x2_axp;
c->avg_pixels_tab[1][2] = avg_pixels_y2_axp;
c->avg_pixels_tab[1][3] = avg_pixels_xy2_axp;
}