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/*
* 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;
}
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