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Get rid of old caching stuff

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Mike Walters
2015-07-13 00:41:52 +01:00
parent 9619ba2a5f
commit 205ceef8f9
2 changed files with 0 additions and 52 deletions
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47
inputsource.cpp
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@@ -42,53 +42,11 @@ InputSource::~InputSource() {
fftwf_free(m_fftw_in);
fftwf_free(m_fftw_out);
free(m_output_cache);
munmap(m_data, m_file_size);
fclose(m_file);
}
void InputSource::GetViewport(float *dest, int x, int y, int width, int height, int zoom) {
int crossover_start_lines = 0;
int crossover_end_lines = 0;
if (m_output_cache != nullptr && m_cache_valid) {
// Scroll down, with at least some of previous cache still in view
if (m_prev_y <= y && y < m_prev_y + m_prev_height) {
float *crossover_start = m_output_cache + (y - m_prev_y) * m_fft_size;
int crossover_lines;
// This covers the case of a window size reduction
if (y + height < m_prev_y + m_prev_height) {
crossover_lines = (m_prev_y + height - y);
} else {
crossover_lines = (m_prev_y + m_prev_height - y);
}
int crossover_length = crossover_lines * m_fft_size * sizeof(float);
memcpy(dest, crossover_start, crossover_length);
crossover_start_lines = crossover_lines;
// Scroll up
} else if (y <= m_prev_y && m_prev_y < y + height) {
float *crossover_start = dest + (m_prev_y - y) * m_fft_size;
int crossover_lines = y + height - m_prev_y;
int crossover_length = crossover_lines * m_fft_size * sizeof(float);
memcpy(crossover_start, m_output_cache, crossover_length);
crossover_end_lines = crossover_lines;
}
}
if (m_output_cache == nullptr || height != m_prev_height) {
m_output_cache = (float*)realloc(m_output_cache, m_fft_size * height * sizeof(float));
}
m_prev_y = y;
m_prev_height = height;
float *cache_ptr = m_output_cache;
y += crossover_start_lines;
height -= crossover_start_lines;
height -= crossover_end_lines;
dest += crossover_start_lines * m_fft_size;
cache_ptr += crossover_start_lines * m_fft_size;
fftwf_complex *sample_ptr = &m_data[y * GetFFTStride()];
@@ -115,12 +73,9 @@ void InputSource::GetViewport(float *dest, int x, int y, int width, int height,
float magdb = 10 * log2(mag) / log2(10);
*dest = magdb;
dest++;
*cache_ptr = magdb;
cache_ptr++;
}
sample_ptr += GetFFTStride();
}
m_cache_valid = true;
}
int InputSource::GetHeight() {
@@ -139,7 +94,6 @@ bool InputSource::ZoomIn() {
m_zoom = m_max_zoom;
return false;
}
m_cache_valid = false;
return true;
}
@@ -149,7 +103,6 @@ bool InputSource::ZoomOut() {
m_zoom = 0;
return false;
}
m_cache_valid = false;
return true;
}