| /* |
| * Copyright (c) Alexandra Hajkova |
| * |
| * 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 |
| */ |
| |
| static void FUNC(ff_hevc_idct_4x4, BIT_DEPTH)(int16_t *coeffs, int col_limit) |
| { |
| const int shift = 7; |
| const int shift2 = 20 - BIT_DEPTH; |
| vec_s16 src_01, src_23; |
| vec_s32 res[4]; |
| vec_s16 res_packed[2]; |
| |
| src_01 = vec_ld(0, coeffs); |
| src_23 = vec_ld(16, coeffs); |
| |
| transform4x4(src_01, src_23, res, shift, coeffs); |
| src_01 = vec_packs(res[0], res[1]); |
| src_23 = vec_packs(res[2], res[3]); |
| scale(res, res_packed, shift); |
| // transpose |
| src_01 = vec_perm(res_packed[0], res_packed[1], mask[0]); |
| src_23 = vec_perm(res_packed[0], res_packed[1], mask[1]); |
| |
| transform4x4(src_01, src_23, res, shift2, coeffs); |
| scale(res, res_packed, shift2); |
| // transpose |
| src_01 = vec_perm(res_packed[0], res_packed[1], mask[0]); |
| src_23 = vec_perm(res_packed[0], res_packed[1], mask[1]); |
| |
| vec_st(src_01, 0, coeffs); |
| vec_st(src_23, 16, coeffs); |
| } |