diff options
Diffstat (limited to 'libavcodec/alpha/me_cmp_alpha.c')
-rw-r--r-- | libavcodec/alpha/me_cmp_alpha.c | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/libavcodec/alpha/me_cmp_alpha.c b/libavcodec/alpha/me_cmp_alpha.c new file mode 100644 index 0000000..8f36019 --- /dev/null +++ b/libavcodec/alpha/me_cmp_alpha.c @@ -0,0 +1,317 @@ +/* + * 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/me_cmp.h" +#include "asm.h" + +int pix_abs16x16_mvi_asm(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h); + +static inline uint64_t avg2(uint64_t a, uint64_t b) +{ + return (a | b) - (((a ^ b) & BYTE_VEC(0xfe)) >> 1); +} + +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; +} + +static int pix_abs8x8_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) +{ + int result = 0; + + if ((size_t) pix2 & 0x7) { + /* works only when pix2 is actually unaligned */ + do { /* do 8 pixel a time */ + uint64_t p1, p2; + + p1 = ldq(pix1); + p2 = uldq(pix2); + result += perr(p1, p2); + + pix1 += line_size; + pix2 += line_size; + } while (--h); + } else { + do { + uint64_t p1, p2; + + p1 = ldq(pix1); + p2 = ldq(pix2); + result += perr(p1, p2); + + pix1 += line_size; + pix2 += line_size; + } while (--h); + } + + return result; +} + +#if 0 /* now done in assembly */ +int pix_abs16x16_mvi(uint8_t *pix1, uint8_t *pix2, int line_size) +{ + int result = 0; + int h = 16; + + if ((size_t) pix2 & 0x7) { + /* works only when pix2 is actually unaligned */ + do { /* do 16 pixel a time */ + uint64_t p1_l, p1_r, p2_l, p2_r; + uint64_t t; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + t = ldq_u(pix2 + 8); + p2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2); + p2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2); + pix1 += line_size; + pix2 += line_size; + + result += perr(p1_l, p2_l) + + perr(p1_r, p2_r); + } while (--h); + } else { + do { + uint64_t p1_l, p1_r, p2_l, p2_r; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + p2_l = ldq(pix2); + p2_r = ldq(pix2 + 8); + pix1 += line_size; + pix2 += line_size; + + result += perr(p1_l, p2_l) + + perr(p1_r, p2_r); + } while (--h); + } + + return result; +} +#endif + +static int pix_abs16x16_x2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) +{ + int result = 0; + uint64_t disalign = (size_t) pix2 & 0x7; + + switch (disalign) { + case 0: + do { + uint64_t p1_l, p1_r, p2_l, p2_r; + uint64_t l, r; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + l = ldq(pix2); + r = ldq(pix2 + 8); + p2_l = avg2(l, (l >> 8) | ((uint64_t) r << 56)); + p2_r = avg2(r, (r >> 8) | ((uint64_t) pix2[16] << 56)); + pix1 += line_size; + pix2 += line_size; + + result += perr(p1_l, p2_l) + + perr(p1_r, p2_r); + } while (--h); + break; + case 7: + /* |.......l|lllllllr|rrrrrrr*| + This case is special because disalign1 would be 8, which + gets treated as 0 by extqh. At least it is a bit faster + that way :) */ + do { + uint64_t p1_l, p1_r, p2_l, p2_r; + uint64_t l, m, r; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + l = ldq_u(pix2); + m = ldq_u(pix2 + 8); + r = ldq_u(pix2 + 16); + p2_l = avg2(extql(l, disalign) | extqh(m, disalign), m); + p2_r = avg2(extql(m, disalign) | extqh(r, disalign), r); + pix1 += line_size; + pix2 += line_size; + + result += perr(p1_l, p2_l) + + perr(p1_r, p2_r); + } while (--h); + break; + default: + do { + uint64_t disalign1 = disalign + 1; + uint64_t p1_l, p1_r, p2_l, p2_r; + uint64_t l, m, r; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + l = ldq_u(pix2); + m = ldq_u(pix2 + 8); + r = ldq_u(pix2 + 16); + p2_l = avg2(extql(l, disalign) | extqh(m, disalign), + extql(l, disalign1) | extqh(m, disalign1)); + p2_r = avg2(extql(m, disalign) | extqh(r, disalign), + extql(m, disalign1) | extqh(r, disalign1)); + pix1 += line_size; + pix2 += line_size; + + result += perr(p1_l, p2_l) + + perr(p1_r, p2_r); + } while (--h); + break; + } + return result; +} + +static int pix_abs16x16_y2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) +{ + int result = 0; + + if ((size_t) pix2 & 0x7) { + uint64_t t, p2_l, p2_r; + t = ldq_u(pix2 + 8); + p2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2); + p2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2); + + do { + uint64_t p1_l, p1_r, np2_l, np2_r; + uint64_t t; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + pix2 += line_size; + t = ldq_u(pix2 + 8); + np2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2); + np2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2); + + result += perr(p1_l, avg2(p2_l, np2_l)) + + perr(p1_r, avg2(p2_r, np2_r)); + + pix1 += line_size; + p2_l = np2_l; + p2_r = np2_r; + + } while (--h); + } else { + uint64_t p2_l, p2_r; + p2_l = ldq(pix2); + p2_r = ldq(pix2 + 8); + do { + uint64_t p1_l, p1_r, np2_l, np2_r; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + pix2 += line_size; + np2_l = ldq(pix2); + np2_r = ldq(pix2 + 8); + + result += perr(p1_l, avg2(p2_l, np2_l)) + + perr(p1_r, avg2(p2_r, np2_r)); + + pix1 += line_size; + p2_l = np2_l; + p2_r = np2_r; + } while (--h); + } + return result; +} + +static int pix_abs16x16_xy2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) +{ + int result = 0; + + uint64_t p1_l, p1_r; + uint64_t p2_l, p2_r, p2_x; + + p1_l = ldq(pix1); + p1_r = ldq(pix1 + 8); + + if ((size_t) pix2 & 0x7) { /* could be optimized a lot */ + p2_l = uldq(pix2); + p2_r = uldq(pix2 + 8); + p2_x = (uint64_t) pix2[16] << 56; + } else { + p2_l = ldq(pix2); + p2_r = ldq(pix2 + 8); + p2_x = ldq(pix2 + 16) << 56; + } + + do { + uint64_t np1_l, np1_r; + uint64_t np2_l, np2_r, np2_x; + + pix1 += line_size; + pix2 += line_size; + + np1_l = ldq(pix1); + np1_r = ldq(pix1 + 8); + + if ((size_t) pix2 & 0x7) { /* could be optimized a lot */ + np2_l = uldq(pix2); + np2_r = uldq(pix2 + 8); + np2_x = (uint64_t) pix2[16] << 56; + } else { + np2_l = ldq(pix2); + np2_r = ldq(pix2 + 8); + np2_x = ldq(pix2 + 16) << 56; + } + + result += perr(p1_l, + avg4( p2_l, ( p2_l >> 8) | ((uint64_t) p2_r << 56), + np2_l, (np2_l >> 8) | ((uint64_t) np2_r << 56))) + + perr(p1_r, + avg4( p2_r, ( p2_r >> 8) | ((uint64_t) p2_x), + np2_r, (np2_r >> 8) | ((uint64_t) np2_x))); + + p1_l = np1_l; + p1_r = np1_r; + p2_l = np2_l; + p2_r = np2_r; + p2_x = np2_x; + } while (--h); + + return result; +} + +av_cold void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx) +{ + /* amask clears all bits that correspond to present features. */ + if (amask(AMASK_MVI) == 0) { + c->sad[0] = pix_abs16x16_mvi_asm; + c->sad[1] = pix_abs8x8_mvi; + c->pix_abs[0][0] = pix_abs16x16_mvi_asm; + c->pix_abs[1][0] = pix_abs8x8_mvi; + c->pix_abs[0][1] = pix_abs16x16_x2_mvi; + c->pix_abs[0][2] = pix_abs16x16_y2_mvi; + c->pix_abs[0][3] = pix_abs16x16_xy2_mvi; + } +} |