From 8f3d61984ecd9ecc97789a174a54c7f0505bddb4 Mon Sep 17 00:00:00 2001
From: Ron Economos <w6rz@comcast.net>
Date: Wed, 23 Sep 2020 21:13:12 -0700
Subject: gr-blocks: Fix wavfile sink and source block performance issues.
Calling libsndfile sf_read/write_float() for every sample created too much
overhead. sf_read/write_float() is now called every 1024 samples for the
wavfile source block and every 8192 samples for the wavfile sink block.
---
gr-blocks/lib/wavfile_source_impl.h | 4 ++++
1 file changed, 4 insertions(+)
(limited to 'gr-blocks/lib/wavfile_source_impl.h')
diff --git a/gr-blocks/lib/wavfile_source_impl.h b/gr-blocks/lib/wavfile_source_impl.h
index 9554feab67..48a3b04f6a 100644
--- a/gr-blocks/lib/wavfile_source_impl.h
+++ b/gr-blocks/lib/wavfile_source_impl.h
@@ -26,6 +26,10 @@ private:
wav_header_info d_h;
long long d_sample_idx;
+ std::vector<float> d_buffer;
+
+ static constexpr int s_items_size = 1024;
+ static constexpr int s_max_channels = 24;
public:
wavfile_source_impl(const char* filename, bool repeat);
--
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