Allow CopyOnWriteBuffer to accept vector-like types.
Bug: none
Change-Id: I03ee91be151e10d6b0385b462158ecd0bd9ad4ed
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/232129
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35039}
diff --git a/rtc_base/copy_on_write_buffer.h b/rtc_base/copy_on_write_buffer.h
index 526cbe5..6837f06 100644
--- a/rtc_base/copy_on_write_buffer.h
+++ b/rtc_base/copy_on_write_buffer.h
@@ -24,6 +24,7 @@
#include "rtc_base/checks.h"
#include "rtc_base/ref_counted_object.h"
#include "rtc_base/system/rtc_export.h"
+#include "rtc_base/type_traits.h"
namespace rtc {
@@ -70,6 +71,17 @@
CopyOnWriteBuffer(const T (&array)[N]) // NOLINT: runtime/explicit
: CopyOnWriteBuffer(array, N) {}
+ // Construct a buffer from a vector like type.
+ template <typename VecT,
+ typename ElemT = typename std::remove_pointer_t<
+ decltype(std::declval<VecT>().data())>,
+ typename std::enable_if_t<
+ !std::is_same<VecT, CopyOnWriteBuffer>::value &&
+ HasDataAndSize<VecT, ElemT>::value &&
+ internal::BufferCompat<uint8_t, ElemT>::value>* = nullptr>
+ explicit CopyOnWriteBuffer(const VecT& v)
+ : CopyOnWriteBuffer(v.data(), v.size()) {}
+
~CopyOnWriteBuffer();
// Get a pointer to the data. Just .data() will give you a (const) uint8_t*,
@@ -221,8 +233,14 @@
AppendData(array, N);
}
- void AppendData(const CopyOnWriteBuffer& buf) {
- AppendData(buf.data(), buf.size());
+ template <typename VecT,
+ typename ElemT = typename std::remove_pointer_t<
+ decltype(std::declval<VecT>().data())>,
+ typename std::enable_if_t<
+ HasDataAndSize<VecT, ElemT>::value &&
+ internal::BufferCompat<uint8_t, ElemT>::value>* = nullptr>
+ void AppendData(const VecT& v) {
+ AppendData(v.data(), v.size());
}
// Sets the size of the buffer. If the new size is smaller than the old, the
diff --git a/rtc_base/copy_on_write_buffer_unittest.cc b/rtc_base/copy_on_write_buffer_unittest.cc
index d397868..ad2c4e0 100644
--- a/rtc_base/copy_on_write_buffer_unittest.cc
+++ b/rtc_base/copy_on_write_buffer_unittest.cc
@@ -353,4 +353,24 @@
EXPECT_EQ(buf.cdata() + 3, slice.cdata());
}
+TEST(CopyOnWriteBufferTest, AcceptsVectorLikeTypes) {
+ std::vector<uint8_t> a = {1, 2};
+ std::vector<int8_t> b = {3, 4};
+ rtc::ArrayView<uint8_t> c(a);
+ rtc::ArrayView<const int8_t> d(b);
+
+ CopyOnWriteBuffer a_buf(a);
+ CopyOnWriteBuffer b_buf(b);
+ CopyOnWriteBuffer c_buf(c);
+ CopyOnWriteBuffer d_buf(d);
+
+ CopyOnWriteBuffer all;
+ all.AppendData(a);
+ all.AppendData(b);
+ all.AppendData(c);
+ all.AppendData(d);
+
+ EXPECT_EQ(all.size(), 8U);
+}
+
} // namespace rtc