/* * JPEG XL de/encoding via libjxl, common support implementation * Copyright (c) 2021 Leo Izen <leo.izen@gmail.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 */ /** * @file * JPEG XL via libjxl common support implementation */ #include "libavutil/cpu.h" #include "libavutil/mem.h" #include <jxl/memory_manager.h> #include "libjxl.h" size_t ff_libjxl_get_threadcount(int threads) { if (threads <= 0) return av_cpu_count(); if (threads == 1) return 0; return threads; } /** * Wrapper around av_malloc used as a jpegxl_alloc_func. * * @param opaque opaque pointer for jpegxl_alloc_func, always ignored * @param size Size in bytes for the memory block to be allocated * @return Pointer to the allocated block, or `NULL` if it cannot be allocated */ static void *libjxl_av_malloc(void *opaque, size_t size) { return av_malloc(size); } /** * Wrapper around av_free used as a jpegxl_free_func. * * @param opaque opaque pointer for jpegxl_free_func, always ignored * @param address Pointer to the allocated block, to free. `NULL` permitted as a no-op. */ static void libjxl_av_free(void *opaque, void *address) { av_free(address); } void ff_libjxl_init_memory_manager(JxlMemoryManager *manager) { manager->opaque = NULL; manager->alloc = &libjxl_av_malloc; manager->free = &libjxl_av_free; }