Add an auto pointer and an auto array class

The auto pointer frees in the dtor.

The auto array has a number of feature that are useful to work with real-time
streaming audio: push back and pop front (because we're dealing with temporal
data), insert silence, auto resize, no compaction when it's resized down, bound
check, direct internal access to work nicely with other APIs.

1 files changed, 80 insertions, 0 deletions

diff --git a/test/test_utils.cpp b/test/test_utils.cpp
new file mode 100644
index 0000000..1a35ce0
--- /dev/null
+++ b/test/test_utils.cpp
@@ -0,0 +1,80 @@
+#include <cassert>
+#include "cubeb_utils.h"
+
+int test_auto_array()
+{
+  auto_array<uint32_t> array;
+  auto_array<uint32_t> array2(10);
+  uint32_t a[10];
+
+  assert(array2.length() == 0);
+  assert(array2.capacity() == 10);
+
+
+  for (uint32_t i = 0; i < 10; i++) {
+    a[i] = i;
+  }
+
+  assert(array.capacity() == 0);
+  assert(array.length() == 0);
+
+  array.push(a, 10);
+
+  assert(!array.resize(9));
+
+  for (uint32_t i = 0; i < 10; i++) {
+    assert(array.data()[i] == i);
+  }
+
+  assert(array.capacity() == 10);
+  assert(array.length() == 10);
+
+  uint32_t b[10];
+
+  array.pop(b, 5);
+
+  assert(array.capacity() == 10);
+  assert(array.length() == 5);
+  for (uint32_t i = 0; i < 5; i++) {
+    assert(b[i] == i);
+    assert(array.data()[i] == 5 + i);
+  }
+  uint32_t* bb = b + 5;
+  array.pop(bb, 5);
+
+  assert(array.capacity() == 10);
+  assert(array.length() == 0);
+  for (uint32_t i = 0; i < 5; i++) {
+    assert(bb[i] == 5 + i);
+  }
+
+  assert(!array.pop(nullptr, 1));
+
+  array.push(a, 10);
+  array.push(a, 10);
+
+  for (uint32_t j = 0; j < 2; j++) {
+    for (uint32_t i = 0; i < 10; i++) {
+      assert(array.data()[10 * j + i] == i);
+    }
+  }
+  assert(array.length() == 20);
+  assert(array.capacity() == 20);
+  array.pop(nullptr, 5);
+
+  for (uint32_t i = 0; i < 5; i++) {
+    assert(array.data()[i] == 5 + i);
+  }
+
+  assert(array.length() == 15);
+  assert(array.capacity() == 20);
+
+  return 0;
+}
+
+
+int main()
+{
+  test_auto_array();
+  return 0;
+}