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https://github.com/mpv-player/mpv.git
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Add random stepping support
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@8175 b3059339-0415-0410-9bf9-f77b7e298cf2
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parent
7877d4f4a2
commit
5a4c2c738e
92
playtree.c
92
playtree.c
@ -406,6 +406,36 @@ play_tree_set_params_from(play_tree_t* dest,play_tree_t* src) {
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}
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// all childs if deep < 0
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void
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play_tree_set_flag(play_tree_t* pt, int flags , int deep) {
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play_tree_t* i;
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pt->flags |= flags;
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if(deep && pt->child) {
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if(deep > 0) deep--;
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for(i = pt->child ; i ; i = i->next)
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play_tree_set_flag(i,flags,deep);
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}
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}
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void
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play_tree_unset_flag(play_tree_t* pt, int flags , int deep) {
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play_tree_t* i;
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pt->flags &= ~flags;
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if(deep && pt->child) {
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if(deep > 0) deep--;
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for(i = pt->child ; i ; i = i->next)
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play_tree_unset_flag(i,flags,deep);
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}
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}
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//////////////////////////////////// ITERATOR //////////////////////////////////////
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static void
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play_tree_iter_push_params(play_tree_iter_t* iter) {
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int n;
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@ -480,6 +510,34 @@ play_tree_iter_free(play_tree_iter_t* iter) {
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free(iter);
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}
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static play_tree_t*
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play_tree_rnd_step(play_tree_t* pt) {
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int count = 0;
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int r;
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play_tree_t *i,*head;
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// Count how many free choice we have
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for(i = pt ; i->prev ; i = i->prev)
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if(!(i->flags & PLAY_TREE_RND_PLAYED)) count++;
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head = i;
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if(!(i->flags & PLAY_TREE_RND_PLAYED)) count++;
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for(i = pt->next ; i ; i = i->next)
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if(!(i->flags & PLAY_TREE_RND_PLAYED)) count++;
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if(!count) return NULL;
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r = (int)((count-1.0) * rand() / RAND_MAX);
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for(i = head ; i ; i=i->next) {
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if(!(i->flags & PLAY_TREE_RND_PLAYED)) r--;
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if(r < 0) return i;
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}
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mp_msg(MSGT_PLAYTREE,MSGL_ERR,"Random stepping error\n");
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return NULL;
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}
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int
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play_tree_iter_step(play_tree_iter_t* iter, int d,int with_nodes) {
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play_tree_t* pt;
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@ -503,14 +561,29 @@ play_tree_iter_step(play_tree_iter_t* iter, int d,int with_nodes) {
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m_config_pop(iter->config);
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}
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iter->file = -1;
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if( d > 0 )
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pt = iter->tree->next;
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else if(d < 0)
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pt = iter->tree->prev;
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if(iter->tree->parent && (iter->tree->parent->flags & PLAY_TREE_RND))
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iter->mode = PLAY_TREE_ITER_RND;
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else
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pt = iter->tree;
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iter->mode = PLAY_TREE_ITER_NORMAL;
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iter->file = -1;
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if(iter->mode == PLAY_TREE_ITER_RND)
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pt = play_tree_rnd_step(iter->tree);
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else if( d > 0 ) {
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int i;
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pt = iter->tree;
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for(i = d ; i > 0 && pt ; i--)
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pt = pt->next;
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d = i ? i : 1;
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} else if(d < 0) {
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int i;
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pt = iter->tree;
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for(i = d ; i < 0 && pt ; i++)
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pt = pt->prev;
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d = i ? i : -1;
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} else
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pt = iter->tree;
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if(pt == NULL) { // No next
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// Must we loop?
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if(iter->tree->parent && iter->tree->parent->loop != 0 && ((d > 0 && iter->loop != 0) || ( d < 0 && (iter->loop < 0 || iter->loop < iter->tree->parent->loop) ) ) ) {
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@ -562,6 +635,8 @@ play_tree_iter_step(play_tree_iter_t* iter, int d,int with_nodes) {
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if(iter->config) {
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play_tree_iter_push_params(iter);
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iter->entry_pushed = 1;
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if(iter->mode == PLAY_TREE_ITER_RND)
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pt->flags |= PLAY_TREE_RND_PLAYED;
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}
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return PLAY_TREE_ITER_ENTRY;
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@ -625,8 +700,11 @@ play_tree_iter_up_step(play_tree_iter_t* iter, int d,int with_nodes) {
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iter->tree = iter->tree->parent;
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// Pop subtree params
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if(iter->config)
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if(iter->config) {
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m_config_pop(iter->config);
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if(iter->mode == PLAY_TREE_ITER_RND)
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iter->tree->flags |= PLAY_TREE_RND_PLAYED;
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}
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return play_tree_iter_step(iter,d,with_nodes);
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}
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11
playtree.h
11
playtree.h
@ -16,6 +16,15 @@ struct m_config;
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#define PLAY_TREE_ENTRY_TV 2
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#define PLAY_TREE_ENTRY_FILE 3
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// Playtree flags
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#define PLAY_TREE_RND (1<<0)
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// Playtree flags used by the iter
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#define PLAY_TREE_RND_PLAYED (1<<8)
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// Iter mode
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#define PLAY_TREE_ITER_NORMAL 0
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#define PLAY_TREE_ITER_RND 1
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typedef struct play_tree play_tree_t;
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typedef struct play_tree_iter play_tree_iter_t;
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typedef struct play_tree_param play_tree_param_t;
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@ -50,6 +59,7 @@ struct play_tree {
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int loop;
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char** files;
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int entry_type;
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int flags;
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};
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struct play_tree_iter {
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@ -60,6 +70,7 @@ struct play_tree_iter {
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int file;
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int num_files;
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int entry_pushed;
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int mode;
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int* status_stack; // loop/valid stack to save/revert status when we go up/down
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int stack_size; // status stack size
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