From c3f40a8cc37114365ef3ec6f2888df64e5206b39 Mon Sep 17 00:00:00 2001
From: jacqueline <me@jacqueline.id.au>
Date: Tue, 1 Aug 2023 10:15:03 +1000
Subject: Start on opus decoder structure

---
 src/codecs/include/opus.hpp | 49 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 src/codecs/include/opus.hpp

(limited to 'src/codecs/include/opus.hpp')

diff --git a/src/codecs/include/opus.hpp b/src/codecs/include/opus.hpp
new file mode 100644
index 00000000..a5a7d78c
--- /dev/null
+++ b/src/codecs/include/opus.hpp
@@ -0,0 +1,49 @@
+/*
+ * Copyright 2023 jacqueline <me@jacqueline.id.au>
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#pragma once
+
+#include <cstddef>
+#include <cstdint>
+#include <memory>
+#include <optional>
+#include <string>
+#include <utility>
+
+#include "opus.h"
+#include "span.hpp"
+
+#include "codec.hpp"
+
+namespace codecs {
+
+class XiphOpusDecoder : public ICodec {
+ public:
+  XiphOpusDecoder();
+  ~XiphOpusDecoder();
+
+  /*
+   * Returns the output format for the next frame in the stream. MP3 streams
+   * may represent multiple distinct tracks, with different bitrates, and so we
+   * handle the stream only on a frame-by-frame basis.
+   */
+  auto BeginStream(cpp::span<const std::byte>) -> Result<OutputFormat> override;
+
+  /*
+   * Writes samples for the current frame.
+   */
+  auto ContinueStream(cpp::span<const std::byte> input,
+                      cpp::span<std::byte> output)
+      -> Result<OutputInfo> override;
+
+  auto SeekStream(cpp::span<const std::byte> input, std::size_t target_sample)
+      -> Result<void> override;
+
+ private:
+  OpusDecoder *opus_;
+  float *sample_buffer_;
+  std::size_t sample_buffer_len_;
+}  // namespace codecs
-- 
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