Add a 'decoder' for streams already in our native format

2 files changed, 43 insertions, 1 deletions

diff --git a/src/codecs/include/native.hpp b/src/codecs/include/native.hpp
new file mode 100644
index 00000000..8f544e13
--- /dev/null
+++ b/src/codecs/include/native.hpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2023 jacqueline <me@jacqueline.id.au>
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+#include <optional>
+#include <span>
+#include <string>
+#include <utility>
+
+#include "mad.h"
+#include "sample.hpp"
+#include "source_buffer.hpp"
+
+#include "codec.hpp"
+
+namespace codecs {
+
+class NativeDecoder : public ICodec {
+ public:
+  NativeDecoder();
+
+  auto OpenStream(std::shared_ptr<IStream> input, uint32_t offset)
+      -> cpp::result<OutputFormat, Error> override;
+
+  auto DecodeTo(std::span<sample::Sample> destination)
+      -> cpp::result<OutputInfo, Error> override;
+
+  NativeDecoder(const NativeDecoder&) = delete;
+  NativeDecoder& operator=(const NativeDecoder&) = delete;
+
+ private:
+  std::shared_ptr<IStream> input_;
+};
+
+}  // namespace codecs
diff --git a/src/codecs/include/types.hpp b/src/codecs/include/types.hpp
index c6dcb486..2bc63b10 100644
--- a/src/codecs/include/types.hpp
+++ b/src/codecs/include/types.hpp
@@ -16,8 +16,9 @@ enum class StreamType {
   kFlac,
   kOpus,
   kWav,
+  kNative,
 };
 
 auto StreamTypeToString(StreamType t) -> std::string;
-  
+
 }  // namespace codecs