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NetEq4: Small change to reduce allocs in AudioMultiVector

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This change reduced the allocation count by 20000 in the bit-exactness
test.

BUG=Issue 1363
TEST=out/Debug/modules_unittests --gtest_filter=NetEqDecodingTest.TestBitExactness
R=turaj@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2157004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4678 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
henrik.lundin@webrtc.org
2013-09-05 06:02:56 +00:00
parent e2d4da6586
commit 36439bf906
1 changed files with 5 additions and 0 deletions
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5
webrtc/modules/audio_coding/neteq4/audio_multi_vector.cc
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@ -73,6 +73,11 @@ template<typename T>
void AudioMultiVector<T>::PushBackInterleaved(const T* append_this,
size_t length) {
assert(length % Channels() == 0);
if (Channels() == 1) {
// Special case to avoid extra allocation and data shuffling.
channels_[0]->PushBack(append_this, length);
return;
}
size_t length_per_channel = length / Channels();
T* temp_array = new T[length_per_channel]; // Intermediate storage.
for (size_t channel = 0; channel < Channels(); ++channel) {