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74 lines
1.7 KiB
74 lines
1.7 KiB
#include "ssrc.h"
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#include <glib.h>
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#include "aux.h"
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static struct ssrc_entry *create_ssrc_entry(u_int32_t ssrc) {
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struct ssrc_entry *ent;
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ent = g_slice_alloc0(sizeof(struct ssrc_entry));
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ent->ssrc = ssrc;
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return ent;
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}
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static void add_ssrc_entry(struct ssrc_entry *ent, struct ssrc_hash *ht) {
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g_hash_table_replace(ht->ht, &ent->ssrc, ent);
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}
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static void free_ssrc_entry(void *p) {
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g_slice_free1(sizeof(struct ssrc_entry), p);
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}
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struct ssrc_entry *find_ssrc(u_int32_t ssrc, struct ssrc_hash *ht) {
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rwlock_lock_r(&ht->lock);
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struct ssrc_entry *ret = g_hash_table_lookup(ht->ht, &ssrc);
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rwlock_unlock_r(&ht->lock);
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return ret;
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}
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struct ssrc_entry *get_ssrc(u_int32_t ssrc, struct ssrc_hash *ht /* , int *created */) {
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struct ssrc_entry *ent;
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restart:
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ent = find_ssrc(ssrc, ht);
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if (G_LIKELY(ent)) {
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// if (created)
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// *created = 0;
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return ent;
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}
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ent = create_ssrc_entry(ssrc);
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rwlock_lock_w(&ht->lock);
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if (g_hash_table_lookup(ht->ht, &ssrc)) {
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// preempted
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rwlock_unlock_w(&ht->lock);
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free_ssrc_entry(ent);
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goto restart;
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}
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add_ssrc_entry(ent, ht);
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rwlock_unlock_w(&ht->lock);
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// if (created)
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// *created = 1;
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return ent;
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}
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void free_ssrc_hash(struct ssrc_hash **ht) {
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if (!*ht)
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return;
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g_hash_table_destroy((*ht)->ht);
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g_slice_free1(sizeof(**ht), *ht);
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*ht = NULL;
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}
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struct ssrc_hash *create_ssrc_hash(void) {
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struct ssrc_hash *ret;
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ret = g_slice_alloc0(sizeof(*ret));
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ret->ht = g_hash_table_new_full(uint32_hash, uint32_eq, NULL, free_ssrc_entry);
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rwlock_init(&ret->lock);
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return ret;
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}
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struct ssrc_ctx *get_ssrc_ctx(u_int32_t ssrc, struct ssrc_hash *ht, enum ssrc_dir dir) {
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struct ssrc_entry *s = get_ssrc(ssrc, ht /* , NULL */);
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return ((void *) s) + dir;
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}
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