From f46b080a698f26534357bcb1d0d3b3c4daa2de6e Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Sat, 8 Oct 2022 14:05:13 +0300
Subject: [PATCH] Support creating audio::recorder directly from samples

---
 libs/audio/include/psemek/audio/recorder.hpp |  5 ++++-
 libs/audio/source/duplicate.cpp              |  2 +-
 libs/audio/source/recorder.cpp               | 17 +++++++++++++++--
 3 files changed, 20 insertions(+), 4 deletions(-)

diff --git a/libs/audio/include/psemek/audio/recorder.hpp b/libs/audio/include/psemek/audio/recorder.hpp
index c011d0e3..d8f8fe33 100644
--- a/libs/audio/include/psemek/audio/recorder.hpp
+++ b/libs/audio/include/psemek/audio/recorder.hpp
@@ -3,12 +3,14 @@
 #include <psemek/audio/stream.hpp>
 #include <psemek/util/span.hpp>
 
+#include <vector>
+
 namespace psemek::audio
 {
 
 	struct recorder
 	{
-		virtual stream_ptr stream() const = 0;
+		virtual std::optional<std::size_t> length() const = 0;
 
 		virtual std::size_t request(std::size_t samples) = 0;
 
@@ -18,5 +20,6 @@ namespace psemek::audio
 	};
 
 	std::shared_ptr<recorder> make_recorder(stream_ptr stream);
+	std::shared_ptr<recorder> make_recorder(std::vector<float> samples);
 
 }
diff --git a/libs/audio/source/duplicate.cpp b/libs/audio/source/duplicate.cpp
index e0bd5eb8..ade8d165 100644
--- a/libs/audio/source/duplicate.cpp
+++ b/libs/audio/source/duplicate.cpp
@@ -18,7 +18,7 @@ namespace psemek::audio
 
 			std::optional<std::size_t> length() const override
 			{
-				return recorder_->stream()->length();
+				return recorder_->length();
 			}
 
 			std::size_t played() const override
diff --git a/libs/audio/source/recorder.cpp b/libs/audio/source/recorder.cpp
index 1739f95d..18dbd25a 100644
--- a/libs/audio/source/recorder.cpp
+++ b/libs/audio/source/recorder.cpp
@@ -15,13 +15,21 @@ namespace psemek::audio
 				: stream_(std::move(stream))
 			{}
 
-			stream_ptr stream() const override
+			recorder_impl(std::vector<float> samples)
+				: buffer_(std::move(samples))
+				, length_(buffer_.size())
+			{}
+
+			std::optional<std::size_t> length() const override
 			{
-				return stream_;
+				return stream_ ? stream_->length() : buffer_.size();
 			}
 
 			std::size_t request(std::size_t samples) override
 			{
+				if (!stream_)
+					return 0;
+
 				if (buffer_.size() < length_ + samples)
 					buffer_.resize(std::max<std::size_t>(samples, buffer_.size() * 2));
 
@@ -48,4 +56,9 @@ namespace psemek::audio
 		return std::make_shared<recorder_impl>(std::move(stream));
 	}
 
+	std::shared_ptr<recorder> make_recorder(std::vector<float> samples)
+	{
+		return std::make_shared<recorder_impl>(std::move(samples));
+	}
+
 }