add new API pa_mempool_block_size_max() to query the maximum tile size

git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1831 fefdeb5f-60dc-0310-8127-8f9354f1896f

2 files changed, 9 insertions, 1 deletions

diff --git a/src/pulsecore/memblock.c b/src/pulsecore/memblock.c
index cded2dfc..05fc34d9 100644
--- a/src/pulsecore/memblock.c
+++ b/src/pulsecore/memblock.c
@@ -300,7 +300,7 @@ pa_memblock *pa_memblock_new_pool(pa_mempool *p, size_t length) {
      * take the largest size that fits in one of our slots. */
     
     if (length == (size_t) -1)
-        length = p->block_size - PA_ALIGN(sizeof(struct mempool_slot)) - PA_ALIGN(sizeof(pa_memblock));
+        length = pa_mempool_block_size_max(p);
     
     if (p->block_size - PA_ALIGN(sizeof(struct mempool_slot)) >= PA_ALIGN(sizeof(pa_memblock)) + length) {
 
@@ -723,6 +723,13 @@ const pa_mempool_stat* pa_mempool_get_stat(pa_mempool *p) {
 }
 
 /* No lock necessary */
+size_t pa_mempool_block_size_max(pa_mempool *p) {
+    pa_assert(p);
+
+    return p->block_size - PA_ALIGN(sizeof(struct mempool_slot)) - PA_ALIGN(sizeof(pa_memblock));
+}
+
+/* No lock necessary */
 void pa_mempool_vacuum(pa_mempool *p) {
     struct mempool_slot *slot;
     pa_flist *list;
diff --git a/src/pulsecore/memblock.h b/src/pulsecore/memblock.h
index 9bf7d8a5..c704014a 100644
--- a/src/pulsecore/memblock.h
+++ b/src/pulsecore/memblock.h
@@ -122,6 +122,7 @@ const pa_mempool_stat* pa_mempool_get_stat(pa_mempool *p);
 void pa_mempool_vacuum(pa_mempool *p);
 int pa_mempool_get_shm_id(pa_mempool *p, uint32_t *id);
 int pa_mempool_is_shared(pa_mempool *p);
+size_t pa_mempool_block_size_max(pa_mempool *p);
 
 /* For recieving blocks from other nodes */
 pa_memimport* pa_memimport_new(pa_mempool *p, pa_memimport_release_cb_t cb, void *userdata);