| /* | |
| * Copyright (c) 2009 Mans Rullgard <mans@mansr.com> | |
| * | |
| * 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 av_always_inline uint32_t AV_RN32(const void *p) | |
| { | |
| struct __attribute__((packed)) u32 { uint32_t v; }; | |
| const uint8_t *q = p; | |
| const struct u32 *pl = (const struct u32 *)(q + 3 * !HAVE_BIGENDIAN); | |
| const struct u32 *pr = (const struct u32 *)(q + 3 * HAVE_BIGENDIAN); | |
| uint32_t v; | |
| __asm__ ("lwl %0, %1 \n\t" | |
| "lwr %0, %2 \n\t" | |
| : "=&r"(v) | |
| : "m"(*pl), "m"(*pr)); | |
| return v; | |
| } | |