[PATCH 1/5] tagstruct: add copy method

[wim.taymans@xxxxxxxxx (Wim Taymans)]

Add a method to copy a tagstruct. This will also reset the read pointer
back to the beginning.
---
 src/pulsecore/tagstruct.c | 13 +++++++++++++
 src/pulsecore/tagstruct.h |  2 ++
 2 files changed, 15 insertions(+)

diff --git a/src/pulsecore/tagstruct.c b/src/pulsecore/tagstruct.c
index 8a29957..c29e49b 100644
--- a/src/pulsecore/tagstruct.c
+++ b/src/pulsecore/tagstruct.c
@@ -97,6 +97,19 @@ void pa_tagstruct_free(pa_tagstruct*t) {
         pa_xfree(t);
 }
 
+pa_tagstruct *pa_tagstruct_copy(pa_tagstruct*t) {
+    pa_tagstruct*tc;
+
+    if (!(tc = pa_flist_pop(PA_STATIC_FLIST_GET(tagstructs))))
+        tc = pa_xnew(pa_tagstruct, 1);
+    tc->data = pa_xmemdup(t->data, t->length);
+    tc->allocated = t->length;
+    tc->rindex = 0;
+    tc->type = PA_TAGSTRUCT_DYNAMIC;
+
+    return tc;
+}
+
 static inline void extend(pa_tagstruct*t, size_t l) {
     pa_assert(t);
     pa_assert(t->type != PA_TAGSTRUCT_FIXED);
diff --git a/src/pulsecore/tagstruct.h b/src/pulsecore/tagstruct.h
index 348c65d..e648d75 100644
--- a/src/pulsecore/tagstruct.h
+++ b/src/pulsecore/tagstruct.h
@@ -64,6 +64,8 @@ pa_tagstruct *pa_tagstruct_new(void);
 pa_tagstruct *pa_tagstruct_new_fixed(const uint8_t* data, size_t length);
 void pa_tagstruct_free(pa_tagstruct*t);
 
+pa_tagstruct *pa_tagstruct_copy(pa_tagstruct*t);
+
 int pa_tagstruct_eof(pa_tagstruct*t);
 const uint8_t* pa_tagstruct_data(pa_tagstruct*t, size_t *l);
 
-- 
2.1.0