1) Add flexible seeking support (including absolute) for memory block queues and playback streams

2) Add support to synchronize multiple playback streams
3) add two tests for 1) and 2)
4) s/PA_ERROR/PA_ERR/
5) s/PA_ERROR_OK/PA_OK/
6) update simple API to deal properly with new peek/drop recording API
7) add beginnings of proper validity checking on API calls in client libs (needs to be extended)
8) report playback buffer overflows/underflows to the client
9) move client side recording mcalign stuff into the memblockq 
10) create typedefs for a bunch of API callback prototypes
11) simplify handling of HUP poll() events

Yes, i know, it's usually better to commit a lot of small patches instead of a
single big one. In this case however, this would have contradicted the other
rule: never commit broken or incomplete stuff.

*** This stuff needs a lot of additional testing! ***


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@511 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/polypcore/sample-util.c

@@ -34,6 +34,15 @@
 
 #include "sample-util.h"
 
+pa_memblock *pa_silence_memblock_new(const pa_sample_spec *spec, size_t length, pa_memblock_stat*s) {
+    assert(spec);
+
+    if (length == 0)
+        length = pa_bytes_per_second(spec)/10; /* 100 ms */
+
+    return pa_silence_memblock(pa_memblock_new(length, s), spec);
+}
+
 pa_memblock *pa_silence_memblock(pa_memblock* b, const pa_sample_spec *spec) {
     assert(b && b->data && spec);
     pa_silence_memory(b->data, b->length, spec);