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Diffstat (limited to 'contrib/ffmpeg/libavutil/tree.c')
-rw-r--r--contrib/ffmpeg/libavutil/tree.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/contrib/ffmpeg/libavutil/tree.c b/contrib/ffmpeg/libavutil/tree.c
deleted file mode 100644
index c929e4819..000000000
--- a/contrib/ffmpeg/libavutil/tree.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
- *
- * 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 "common.h"
-#include "log.h"
-#include "tree.h"
-
-typedef struct AVTreeNode{
- struct AVTreeNode *child[2];
- void *elem;
- int state;
-}AVTreeNode;
-
-void *av_tree_find(const AVTreeNode *t, void *key, int (*cmp)(void *key, const void *b), void *next[2]){
- if(t){
- unsigned int v= cmp(t->elem, key);
- if(v){
- if(next) next[(v>>31)^1]= t->elem;
- return av_tree_find(t->child[v>>31], key, cmp, next);
- }else{
- return t->elem;
- }
- }
- return NULL;
-}
-
-void *av_tree_insert(AVTreeNode **tp, void *key, int (*cmp)(void *key, const void *b)){
- AVTreeNode *t= *tp;
- if(t){
- unsigned int v= cmp(t->elem, key);
- if(v){
- int i= v>>31;
- AVTreeNode **child= &t->child[i];
- void *ret= av_tree_insert(child, key, cmp);
- if(!ret){
- t->state -= ((int)v>>31)|1;
- if(!(t->state&1)){
- if(t->state){
- if((*child)->state*2 == t->state){
- *tp= *child;
- *child= (*child)->child[i^1];
- (*tp)->child[i^1]= t;
- t->state= 0;
- }else{
- *tp= (*child)->child[i^1];
- (*child)->child[i^1]= (*tp)->child[i];
- (*tp)->child[i]= *child;
- *child= (*tp)->child[i^1];
- (*tp)->child[i^1]= t;
-
- i= (*tp)->state > 0;
- (*tp)->child[i ]->state= 0;
- (*tp)->child[i^1]->state= -(*tp)->state;
- }
- (*tp)->state=0;
- }
- return key;
- }
- }
- return ret;
- }else{
- return t->elem;
- }
- }else{
- *tp= av_mallocz(sizeof(AVTreeNode));
- (*tp)->elem= key;
- return NULL;
- }
-}
-
-void av_tree_destroy(AVTreeNode *t){
- av_tree_destroy(t->child[0]);
- av_tree_destroy(t->child[1]);
- av_free(t);
-}
-
-#if 0
-void av_tree_enumerate(AVTreeNode *t, void *opaque, int (*f)(void *opaque, void *elem)){
- int v= f(opaque, t->elem);
- if(v>=0) av_tree_enumerate(t->child[0], opaque, f);
- if(v<=0) av_tree_enumerate(t->child[1], opaque, f);
-}
-#endif
-
-#ifdef TEST
-
-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 %4d\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");
-}
-
-int cmp(const void *a, const void *b){
- return a-b;
-}
-
-int main(){
- int i,j,k;
- AVTreeNode *root= NULL;
-
- for(i=0; i<10000; i++){
- int j= (random()%863294);
- 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_ERROR, "inserting %4d\n", j);
- av_tree_insert(&root, (void*)(j+1), cmp);
- }
- return 0;
-}
-#endif