diff options
Diffstat (limited to 'sdrbase/gui/glspectrum.cpp')
| -rw-r--r-- | sdrbase/gui/glspectrum.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/sdrbase/gui/glspectrum.cpp b/sdrbase/gui/glspectrum.cpp index 1ab3eb7..912d732 100644 --- a/sdrbase/gui/glspectrum.cpp +++ b/sdrbase/gui/glspectrum.cpp @@ -15,6 +15,7 @@ // along with this program. If not, see <http://www.gnu.org/licenses/>. // /////////////////////////////////////////////////////////////////////////////////// +#include <immintrin.h> #include <QMouseEvent> #include "gui/glspectrum.h" @@ -296,6 +297,8 @@ void GLSpectrum::updateHistogram(const std::vector<Real>& spectrum) m_histogramHoldoffCount = m_histogramHoldoffBase; } +//#define NO_AVX +#ifdef NO_AVX for(int i = 0; i < m_fftSize; i++) { int v = (int)((spectrum[i] - m_referenceLevel) * 100.0 / m_powerRange + 100.0); @@ -307,6 +310,33 @@ void GLSpectrum::updateHistogram(const std::vector<Real>& spectrum) *b += 1; } } +#else + const __m128 refl = {m_referenceLevel,m_referenceLevel,m_referenceLevel,m_referenceLevel}; + const __m128 power = {m_powerRange,m_powerRange,m_powerRange,m_powerRange}; + const __m128 mul = {100.0f,100.0f,100.0f,100.0f}; + + for(int i = 0; i < m_fftSize; i+=4) { + __m128 abc = _mm_loadu_ps (&spectrum[i]); + abc = _mm_sub_ps(abc, refl); + abc = _mm_mul_ps(abc, mul); + abc = _mm_div_ps(abc, power); + abc = _mm_add_ps(abc, mul); + __m128i result = _mm_cvtps_epi32(abc); + + for(int j = 0; j < 4; j++) { + + int v = ((int*)&result)[j]; + + if((v >= 0) && (v <= 99)) { + b = m_histogram + (i+j) * 100 + v; + if(*b < 220) + *b += 4; + else if(*b < 239) + *b += 1; + } + } + } +#endif } void GLSpectrum::initializeGL() |