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/*
* motion_comp_alpha.c
* Copyright (C) 2002 Falk Hueffner <falk@debian.org>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
* See http://libmpeg2.sourceforge.net/ for updates.
*
* mpeg2dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpeg2dec 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "config.h"
#ifdef ARCH_ALPHA
#include <inttypes.h>
#include "mpeg2.h"
#include "mpeg2_internal.h"
#include "alpha_asm.h"
static inline uint64_t avg2(uint64_t a, uint64_t b)
{
return (a | b) - (((a ^ b) & BYTE_VEC(0xfe)) >> 1);
}
// Load two unaligned quadwords from addr. This macro only works if
// addr is actually unaligned.
#define ULOAD16(ret_l, ret_r, addr) \
do { \
uint64_t _l = ldq_u(addr + 0); \
uint64_t _m = ldq_u(addr + 8); \
uint64_t _r = ldq_u(addr + 16); \
ret_l = extql(_l, addr) | extqh(_m, addr); \
ret_r = extql(_m, addr) | extqh(_r, addr); \
} while (0)
// Load two aligned quadwords from addr.
#define ALOAD16(ret_l, ret_r, addr) \
do { \
ret_l = ldq(addr); \
ret_r = ldq(addr + 8); \
} while (0)
#define OP8(LOAD, LOAD16, STORE) \
do { \
STORE(LOAD(pixels), block); \
pixels += line_size; \
block += line_size; \
} while (--h)
#define OP16(LOAD, LOAD16, STORE) \
do { \
uint64_t l, r; \
LOAD16(l, r, pixels); \
STORE(l, block); \
STORE(r, block + 8); \
pixels += line_size; \
block += line_size; \
} while (--h)
#define OP8_X2(LOAD, LOAD16, STORE) \
do { \
uint64_t p0, p1; \
\
p0 = LOAD(pixels); \
p1 = p0 >> 8 | ((uint64_t) pixels[8] << 56); \
STORE(avg2(p0, p1), block); \
pixels += line_size; \
block += line_size; \
} while (--h)
#define OP16_X2(LOAD, LOAD16, STORE) \
do { \
uint64_t p0, p1; \
\
LOAD16(p0, p1, pixels); \
STORE(avg2(p0, p0 >> 8 | p1 << 56), block); \
STORE(avg2(p1, p1 >> 8 | (uint64_t) pixels[16] << 56), \
block + 8); \
pixels += line_size; \
block += line_size; \
} while (--h)
#define OP8_Y2(LOAD, LOAD16, STORE) \
do { \
uint64_t p0, p1; \
p0 = LOAD(pixels); \
pixels += line_size; \
p1 = LOAD(pixels); \
do { \
uint64_t av = avg2(p0, p1); \
if (--h == 0) line_size = 0; \
pixels += line_size; \
p0 = p1; \
p1 = LOAD(pixels); \
STORE(av, block); \
block += line_size; \
} while (h); \
} while (0)
#define OP16_Y2(LOAD, LOAD16, STORE) \
do { \
uint64_t p0l, p0r, p1l, p1r; \
LOAD16(p0l, p0r, pixels); \
pixels += line_size; \
LOAD16(p1l, p1r, pixels); \
do { \
uint64_t avl, avr; \
if (--h == 0) line_size = 0; \
avl = avg2(p0l, p1l); \
avr = avg2(p0r, p1r); \
p0l = p1l; \
p0r = p1r; \
pixels += line_size; \
LOAD16(p1l, p1r, pixels); \
STORE(avl, block); \
STORE(avr, block + 8); \
block += line_size; \
} while (h); \
} while (0)
#define OP8_XY2(LOAD, LOAD16, STORE) \
do { \
uint64_t pl, ph; \
uint64_t p1 = LOAD(pixels); \
uint64_t p2 = p1 >> 8 | ((uint64_t) pixels[8] << 56); \
\
ph = ((p1 & ~BYTE_VEC(0x03)) >> 2) \
+ ((p2 & ~BYTE_VEC(0x03)) >> 2); \
pl = (p1 & BYTE_VEC(0x03)) \
+ (p2 & BYTE_VEC(0x03)); \
\
do { \
uint64_t npl, nph; \
\
pixels += line_size; \
p1 = LOAD(pixels); \
p2 = (p1 >> 8) | ((uint64_t) pixels[8] << 56); \
nph = ((p1 & ~BYTE_VEC(0x03)) >> 2) \
+ ((p2 & ~BYTE_VEC(0x03)) >> 2); \
npl = (p1 & BYTE_VEC(0x03)) \
+ (p2 & BYTE_VEC(0x03)); \
\
STORE(ph + nph \
+ (((pl + npl + BYTE_VEC(0x02)) >> 2) \
& BYTE_VEC(0x03)), block); \
\
block += line_size; \
pl = npl; \
ph = nph; \
} while (--h); \
} while (0)
#define OP16_XY2(LOAD, LOAD16, STORE) \
do { \
uint64_t p0, p1, p2, p3, pl_l, ph_l, pl_r, ph_r; \
LOAD16(p0, p2, pixels); \
p1 = p0 >> 8 | (p2 << 56); \
p3 = p2 >> 8 | ((uint64_t) pixels[16] << 56); \
\
ph_l = ((p0 & ~BYTE_VEC(0x03)) >> 2) \
+ ((p1 & ~BYTE_VEC(0x03)) >> 2); \
pl_l = (p0 & BYTE_VEC(0x03)) \
+ (p1 & BYTE_VEC(0x03)); \
ph_r = ((p2 & ~BYTE_VEC(0x03)) >> 2) \
+ ((p3 & ~BYTE_VEC(0x03)) >> 2); \
pl_r = (p2 & BYTE_VEC(0x03)) \
+ (p3 & BYTE_VEC(0x03)); \
\
do { \
uint64_t npl_l, nph_l, npl_r, nph_r; \
\
pixels += line_size; \
LOAD16(p0, p2, pixels); \
p1 = p0 >> 8 | (p2 << 56); \
p3 = p2 >> 8 | ((uint64_t) pixels[16] << 56); \
nph_l = ((p0 & ~BYTE_VEC(0x03)) >> 2) \
+ ((p1 & ~BYTE_VEC(0x03)) >> 2); \
npl_l = (p0 & BYTE_VEC(0x03)) \
+ (p1 & BYTE_VEC(0x03)); \
nph_r = ((p2 & ~BYTE_VEC(0x03)) >> 2) \
+ ((p3 & ~BYTE_VEC(0x03)) >> 2); \
npl_r = (p2 & BYTE_VEC(0x03)) \
+ (p3 & BYTE_VEC(0x03)); \
\
STORE(ph_l + nph_l \
+ (((pl_l + npl_l + BYTE_VEC(0x02)) >> 2) \
& BYTE_VEC(0x03)), block); \
STORE(ph_r + nph_r \
+ (((pl_r + npl_r + BYTE_VEC(0x02)) >> 2) \
& BYTE_VEC(0x03)), block + 8); \
\
block += line_size; \
pl_l = npl_l; \
ph_l = nph_l; \
pl_r = npl_r; \
ph_r = nph_r; \
} while (--h); \
} while (0)
#define MAKE_OP(OPNAME, SIZE, SUFF, OPKIND, STORE) \
static void MC_ ## OPNAME ## _ ## SUFF ## _ ## SIZE ## _alpha \
(uint8_t *restrict block, const uint8_t *restrict pixels, \
int line_size, int h) \
{ \
if ((uint64_t) pixels & 0x7) { \
OPKIND(uldq, ULOAD16, STORE); \
} else { \
OPKIND(ldq, ALOAD16, STORE); \
} \
}
#define PIXOP(OPNAME, STORE) \
MAKE_OP(OPNAME, 8, o, OP8, STORE); \
MAKE_OP(OPNAME, 8, x, OP8_X2, STORE); \
MAKE_OP(OPNAME, 8, y, OP8_Y2, STORE); \
MAKE_OP(OPNAME, 8, xy, OP8_XY2, STORE); \
MAKE_OP(OPNAME, 16, o, OP16, STORE); \
MAKE_OP(OPNAME, 16, x, OP16_X2, STORE); \
MAKE_OP(OPNAME, 16, y, OP16_Y2, STORE); \
MAKE_OP(OPNAME, 16, xy, OP16_XY2, STORE);
#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);
mpeg2_mc_t mpeg2_mc_alpha = {
{ MC_put_o_16_alpha, MC_put_x_16_alpha,
MC_put_y_16_alpha, MC_put_xy_16_alpha,
MC_put_o_8_alpha, MC_put_x_8_alpha,
MC_put_y_8_alpha, MC_put_xy_8_alpha },
{ MC_avg_o_16_alpha, MC_avg_x_16_alpha,
MC_avg_y_16_alpha, MC_avg_xy_16_alpha,
MC_avg_o_8_alpha, MC_avg_x_8_alpha,
MC_avg_y_8_alpha, MC_avg_xy_8_alpha }
};
#endif
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