aac5773f
 hucm
功能基本完成，接口待打磨
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/*
* 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/tree.c"
#include <stdint.h>
#include "libavutil/common.h"
#include "libavutil/lfg.h"
#include "libavutil/log.h"
static int check(AVTreeNode *t)
{
if (t) {
int left = check(t->child[0]);
int right = check(t->child[1]);
if (left > 999 || right > 999)
return 1000;
if (right - left != t->state)
return 1000;
if (t->state > 1 || t->state < -1)
return 1000;
return FFMAX(left, right) + 1;
}
return 0;
}
static void print(AVTreeNode *t, int depth)
{
int i;
for (i = 0; i < depth * 4; i++)
av_log(NULL, AV_LOG_ERROR, " ");
if (t) {
av_log(NULL, AV_LOG_ERROR, "Node %p %2d %p\n", t, t->state, t->elem);
print(t->child[0], depth + 1);
print(t->child[1], depth + 1);
} else
av_log(NULL, AV_LOG_ERROR, "NULL\n");
}
static int cmp(const void *a, const void *b)
{
return (const uint8_t *) a - (const uint8_t *) b;
}
int main(int argc, char **argv)
{
int i;
void *k;
AVTreeNode *root = NULL, *node = NULL;
AVLFG prng;
int log_level = argc <= 1 ? AV_LOG_INFO : atoi(argv[1]);
av_log_set_level(log_level);
av_lfg_init(&prng, 1);
for (i = 0; i < 10000; i++) {
intptr_t j = av_lfg_get(&prng) % 86294;
if (check(root) > 999) {
av_log(NULL, AV_LOG_ERROR, "FATAL error %d\n", i);
print(root, 0);
return 1;
}
av_log(NULL, AV_LOG_DEBUG, "inserting %4d\n", (int)j);
if (!node)
node = av_tree_node_alloc();
if (!node) {
av_log(NULL, AV_LOG_ERROR, "Memory allocation failure.\n");
return 1;
}
av_tree_insert(&root, (void *)(j + 1), cmp, &node);
j = av_lfg_get(&prng) % 86294;
{
AVTreeNode *node2 = NULL;
av_log(NULL, AV_LOG_DEBUG, "removing %4d\n", (int)j);
av_tree_insert(&root, (void *)(j + 1), cmp, &node2);
k = av_tree_find(root, (void *)(j + 1), cmp, NULL);
if (k)
av_log(NULL, AV_LOG_ERROR, "removal failure %d\n", i);
av_free(node2);
}
}
av_free(node);
av_tree_destroy(root);
return 0;
}
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