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Moved baseband temporary buffers back into class member variables.

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Significant performance hit when declaring on stack. C++ wants to initialize std::array or even raw array with element constructors, was resulting in ~7% CPU utilization, for a buffer that was immediately written over anyway.
This commit is contained in:
Jared Boone 2016-01-03 22:31:44 -08:00
parent 5547782f5a
commit d9017530c6
10 changed files with 42 additions and 45 deletions
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11
firmware/baseband/proc_am_audio.cpp
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@ -28,12 +28,6 @@ void NarrowbandAMAudio::execute(const buffer_c8_t& buffer) {
return;
}
std::array<complex16_t, 512> dst;
const buffer_c16_t dst_buffer {
dst.data(),
dst.size()
};
const auto decim_0_out = decim_0.execute(buffer, dst_buffer);
const auto decim_1_out = decim_1.execute(decim_0_out, dst_buffer);
const auto channel_out = channel_filter.execute(decim_1_out, dst_buffer);
@ -42,11 +36,6 @@ void NarrowbandAMAudio::execute(const buffer_c8_t& buffer) {
feed_channel_stats(channel_out);
channel_spectrum.feed(channel_out, channel_filter_pass_f, channel_filter_stop_f);
const buffer_s16_t work_audio_buffer {
(int16_t*)dst.data(),
sizeof(*dst.data()) * dst.size()
};
auto audio = demod.execute(channel_out, work_audio_buffer);
audio_hpf.execute_in_place(audio);