Merge "Codec2: add simple range utility classes" (4173ed39) · Commits · e / os / android_frameworks_av

media/libstagefright/codec2/include/C2Buffer.h

+27 −0

Original line number	Diff line number	Diff line
		@@ -284,6 +284,7 @@ class _C2LinearRangeAspect : public _C2LinearCapacityAspect {
		/// @{
		public:
		inline uint32_t offset() const { return mOffset; }
		inline uint32_t endOffset() const { return mOffset + mSize; }
		inline uint32_t size() const { return mSize; }

		protected:
		@@ -311,6 +312,32 @@ private:
		/// @}
		};

		class C2_HIDE _C2LinearCapacityBase : public _C2LinearCapacityAspect {
		public:
		inline explicit _C2LinearCapacityBase(size_t capacity)
		: _C2LinearCapacityAspect(c2_min(capacity, std::numeric_limits<uint32_t>::max())) {}
		};

		/**
		* Utility class for safe range calculations.
		*/
		class C2LinearRange : public _C2LinearRangeAspect {
		public:
		inline C2LinearRange(const _C2LinearCapacityBase &parent, size_t offset, size_t size)
		: _C2LinearRangeAspect(&parent, offset, size) {}
		};

		/**
		* Utility class for simple capacity and range construction.
		*/
		class C2LinearCapacity : public _C2LinearCapacityBase {
		public:
		using _C2LinearCapacityBase::_C2LinearCapacityBase;
		inline C2LinearRange range(size_t offset, size_t size) {
		return C2LinearRange(*this, offset, size);
		}
		};

		/**
		* Aspect for objects that have an editable linear range.
		*