From: ronag <ronag@362d55ac-95cf-4e76-9f9a-cbaa9c17b72d>
Date: Sun, 4 Sep 2011 14:11:16 +0000 (+0000)
Subject: audio_mixer: Added some comments.
X-Git-Tag: 2.0.1~13
X-Git-Url: https://git.sesse.net/?p=casparcg;a=commitdiff_plain;h=155bb9004a3f60a946af0f0ce12552dc9a223d4b

audio_mixer: Added some comments.


git-svn-id: https://casparcg.svn.sourceforge.net/svnroot/casparcg/server/branches/2.0.0.2@1344 362d55ac-95cf-4e76-9f9a-cbaa9c17b72d
---

diff --git a/core/mixer/audio/audio_mixer.cpp b/core/mixer/audio/audio_mixer.cpp
index 9f4baa7f7..4dccf01a7 100644
--- a/core/mixer/audio/audio_mixer.cpp
+++ b/core/mixer/audio/audio_mixer.cpp
@@ -92,6 +92,8 @@ public:
 	
 	audio_buffer mix()
 	{	
+		// NOTE: auto data should be larger than format_desc_.audio_samples_per_frame to allow sse to read/write beyond size.
+
 		auto intermediate = std::vector<float, tbb::cache_aligned_allocator<float>>(format_desc_.audio_samples_per_frame+128, 0.0f);
 
 		std::map<const void*, core::frame_transform> next_frame_transforms;
@@ -99,7 +101,7 @@ public:
 		tbb::affinity_partitioner ap;
 
 		BOOST_FOREACH(auto& item, items)
-		{				
+		{			
 			const auto next = item.transform;
 			auto prev = next;
 
diff --git a/core/mixer/audio/audio_util.h b/core/mixer/audio/audio_util.h
index d422bc086..0ea9ec2d8 100644
--- a/core/mixer/audio/audio_util.h
+++ b/core/mixer/audio/audio_util.h
@@ -10,6 +10,7 @@
 
 namespace caspar { namespace core {
 
+// NOTE: Input data pointer should be larger than input.size() to allow sse to read beyond
 static std::vector<int16_t, tbb::cache_aligned_allocator<int16_t>> audio_32_to_16_sse(const boost::iterator_range<int32_t*>& input)
 {	
 	std::vector<int16_t, tbb::cache_aligned_allocator<int16_t>> audio16(input.size());